JP2017124071A - Electronic device, system, presentation method, presentation program, and recording medium - Google Patents

Abstract

An electronic apparatus, system, presentation method, presentation program, and recording medium capable of objectively and simply presenting a swing type to a user are provided.
An electronic device according to this application example includes the identification indicating a region to which a striking part of an exercise tool belongs at each of a plurality of timings during a swing among a plurality of regions to which identification data is allocated in advance. A presentation unit for presenting data to the user is included.
[Selection] Figure 26

Description

  The present invention relates to an electronic device, a system, a presentation method, a presentation program, and a recording medium.

  Patent Document 1 discloses a motion analysis system that performs a swing analysis using a motion sensor and displays processing results as characters, graphs, or other images.

JP 2014-100341 A

  However, Patent Document 1 does not disclose a specific configuration for notifying the user of the swing process. Incidentally, an analysis apparatus that displays a swing locus (for example, a locus of a golf club head) has already been proposed, but it is extremely difficult for a user to objectively grasp the type of swing from only the locus.

  The present invention has been made in view of the above problems, and according to some aspects of the present invention, an electronic apparatus and system capable of presenting a swing type to a user in an objective and simple manner. A presentation method, a presentation program, and a recording medium are provided.

  The “swing type” in the present specification refers to a swing type classified according to a swing transition method (swing time change pattern).

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following aspects or application examples.

[Application Example 1]
The electronic device according to this application example uses the output of the inertial sensor, and among the plurality of regions to which the identification data is allocated in advance, the region to which the striking part of the exercise tool belonged at each of a plurality of timings during the swing The present invention includes a presentation unit that presents the identification data indicating

  According to the electronic device according to this application example, the identification data of the area to which the hitting unit belongs at each of the plurality of timings is presented in time series (that is, in the order in which the plurality of timings have arrived). The type of swing can be grasped as an array pattern of identification data.

[Application Example 2]
In this application example, the presenting unit may present the identification data to the user in time series.

[Application Example 3]
In the electronic device according to this application example, the plurality of regions may be set based on a first virtual plane indicating a basic posture of the exercise tool.

  Therefore, the electronic device according to this application example can present the type of swing based on the basic posture of the exercise tool.

[Application Example 4]
In the electronic device according to this application example, the first virtual surface is based on a first axis along the target direction of the hit ball and a second axis along the longitudinal direction of the exercise tool before the start of the backswing. It may be a surface specified by

  Therefore, the electronic device according to this application example can present the type of swing based on the basic posture of the exercise tool before the start of the backswing and the target direction of the hit ball.

[Application Example 5]
In the electronic device according to this application example, the plurality of regions may be set based on the first virtual surface and a second virtual surface passing near the shoulder of the user.

  Therefore, the electronic device according to this application example can present the type of swing based on the basic posture of the exercise tool, the target direction of the hit ball, and the basic posture of the user before the start of the backswing.

[Application Example 6]
In the electronic apparatus according to this application example, the second virtual surface may be a surface that includes the first axis and forms a predetermined angle with the first virtual surface.

  Therefore, the electronic device according to this application example can present the type of swing with reference to a zone (V zone) sandwiched between the first virtual plane and the second virtual plane.

[Application Example 7]
In the electronic device according to this application example, the second virtual surface may be a plane parallel to the first virtual surface.

  Therefore, the electronic device according to this application example can present the type of swing with reference to a zone (parallel zone) sandwiched between the first virtual plane and the second virtual plane.

[Application Example 8]
In the electronic apparatus according to this application example, the presenting unit may present the first virtual surface and the second virtual surface together with the identification data to the user.

  Therefore, the electronic device according to this application example can allow the user to confirm the relationship between the type of swing and the first virtual surface and the second virtual surface.

[Application Example 9]
In the electronic apparatus according to this application example, the presenting unit may present the swing locus together with the identification data to the user.

  Therefore, the electronic device according to this application example can allow the user to check the swing locus together with the swing type.

[Application Example 10]
In the electronic device according to the application example, the timing of the plurality of timings includes a timing when the longitudinal direction of the exercise tool is along a horizontal plane during a backswing, a top timing, and a gripping portion of the exercise tool starts to decelerate during a downswing. At least two of the timing and the timing when the longitudinal direction of the exercise tool is along the horizontal plane during the downswing may be included.

  Therefore, the electronic device according to this application example can reflect the posture of the exercise tool at at least two timings representing the swing in the arrangement of the identification data.

[Application Example 11]
In the electronic apparatus according to this application example, the inertial sensor may include at least one of an acceleration sensor and an angular velocity sensor.

  Therefore, the electronic device can present identification data based on at least one of acceleration, speed, position, posture change, and posture of the exercise tool, for example.

[Application Example 12]
In this application example, the presenting unit may present a level based on the presented identification data.

[Application Example 13]
In this application example, the presenting unit may present diagnostic information based on the presented identification data.

[Application Example 14]
In this application example, the presentation unit may present information related to a swing practice method based on the diagnosis information.

[Application Example 15]
A system according to this application example includes any one of the electronic devices according to this application example and the inertial sensor.

[Application Example 16]
A system according to this application example includes any electronic device according to this application example, and a head-mounted display device that displays the identification data.

[Application Example 17]
A system according to this application example includes any of the electronic devices according to this application example, and an arm-mounted display device that displays the identification data.

[Application Example 18]
The presentation method according to this application example uses the output of the inertial sensor, and among the plurality of regions to which the identification data is allocated in advance, the region to which the striking part of the exercise tool belonged at each of the plurality of timings during the swing The step of presenting the identification data indicating: to the user.

[Application Example 19]
In this application example, in the presenting step, the identification data may be presented to the user in time series.

[Application Example 20]
In this application example, the plurality of regions may be set based on a first virtual plane indicating a basic posture of the exercise tool.

[Application Example 21]
In this application example, the first virtual surface is specified based on a first axis along the target direction of the hit ball and a second axis along the longitudinal direction of the exercise tool before the start of the backswing. It may be a surface.

[Application Example 22]
In this application example, the plurality of regions may be set based on the first virtual surface and a second virtual surface passing near the shoulder of the user.
[Application Example 23]
In this application example, the second virtual surface may be a surface that includes the first axis and forms a predetermined angle with the first virtual surface.

[Application Example 24]
In this application example, the second virtual surface may be a plane parallel to the first virtual surface.

[Application Example 25]
In this application example, the presenting step may present the first virtual surface and the second virtual surface to the user together with the identification data.

[Application Example 26]
In this application example, the presenting step may present the swing trajectory together with the identification data to the user.

[Application Example 27]
In this application example, the plurality of timings include a timing at which the longitudinal direction of the exercise tool follows a horizontal plane during a backswing, a top timing, a timing at which the gripping portion of the exercise tool starts to decelerate during a downswing, and a down During the swing, at least two of the timings in which the longitudinal direction of the exercise tool is along the horizontal plane may be included.

[Application Example 28]
The presentation program according to this application example uses the output of the inertial sensor, and among the plurality of regions to which the identification data is allocated in advance, the region to which the striking part of the exercise tool belonged at each of a plurality of timings during the swing The computer is caused to execute the step of presenting the identification data indicating the above to the user.

[Application Example 29]
The recording medium according to this application example uses the output of the inertial sensor, and among the plurality of regions to which the identification data is allocated in advance, the region to which the striking part of the exercise tool belonged at each of a plurality of timings during the swing A presentation program that causes the computer to execute the step of presenting the identification data indicating the above to the user is recorded.

The figure which shows the structural example of the swing analysis system of this embodiment. The figure which shows the example of mounting | wearing of a sensor unit. The figure which shows an example of the mounting position and direction of a sensor unit. The figure which shows the procedure of the operation | movement performed before a user hits a ball. The figure which shows an example of the input screen of body information and golf club information. Explanatory drawing about swing operation | movement. The figure which shows an example of the selection screen of swing analysis data. The figure which shows an example of a display screen. The figure which shows the structural example of a sensor unit and a swing analyzer. The top view which looked at the golf club and sensor unit at the time of a user's still view from the negative side of the X-axis. The graph which shows an example of the time change of a triaxial angular velocity. The graph which shows the time change of the composite value of a triaxial angular velocity. The graph which shows the time change of the derivative of a synthetic value. The figure which shows a shaft plane and a Hogan plane. The figure which looked at the sectional view which cut the shaft plane with the YZ plane from the negative side of the X-axis. The figure which looked at the cross-sectional view which cut the Hogan plane in the YZ plane from the negative side of the X-axis. The figure for demonstrating a face angle and a club path (incidence angle). The figure which shows an example of the time change of the shaft axis rotation angle from a swing start (back swing start) to an impact. The figure which shows an example of the time change of the speed of the grip in a downswing. The figure which shows an example of the relationship between a shaft plane and a Hogan plane, and several area | region A, B, C, D, E. The flowchart figure which shows an example of the procedure of a swing analysis process (swing analysis method). The figure which shows the structural example of a server apparatus. The flowchart figure which shows an example of the procedure of the process of the swing analysis apparatus relevant to a server apparatus. The flowchart figure which shows an example of the process sequence of a server apparatus. An example of a V zone correspondence table. An example of the display screen of a V zone item. An example of a display screen when the 1st display part 25-1 (here HWB button) is tapped. An example of a display screen when the 2nd display part 25-2 (here top button) is tapped. An example of a display screen when the 3rd display part 25-3 (here NU button) is tapped. An example of a display screen when the 4th display part 25-4 (here HWB button) is tapped. An example of how the score display section 25-5 (score button) is tapped. An example of the diagnostic screen of a V zone item. The flowchart figure which shows an example of the procedure of the display process of the V zone item by the process part 21 of the swing analysis apparatus 20. Explanatory drawing of V zone (a 1st virtual surface and a 2nd virtual surface). The modification of a 1st virtual surface and a 2nd virtual surface. Another modification of a 1st virtual surface and a 2nd virtual surface. It is a figure which shows an example of a list-type display part. It is a figure which shows an example of a head mounted display.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The embodiments described below do not unduly limit the contents of the present invention described in the claims. Also, not all of the configurations described below are essential constituent requirements of the present invention.

  Hereinafter, a swing analysis system for analyzing a golf swing will be described as an example.

1. Swing analysis system 1-1. Configuration of Swing Analysis System FIG. 1 is a diagram illustrating a configuration example of a swing analysis system according to this embodiment. As shown in FIG. 1, the swing analysis system 1 of this embodiment includes a sensor unit 10, a swing analysis device 20, and a server device 30.

  The sensor unit 10 (an example of an inertial sensor) can measure acceleration generated in each of the three axes and angular velocity generated around each of the three axes, and is attached to the golf club 3 as shown in FIG. .

  In this embodiment, as shown in FIG. 3, the sensor unit 10 has one of three detection axes (x axis, y axis, z axis), for example, the y axis as the longitudinal direction of the shaft of the golf club 3 ( It is attached to a part of the shaft so as to match the longitudinal direction of the golf club 3. Desirably, the sensor unit 10 is attached to a position close to a grip (an example of a gripping portion) that is difficult to receive an impact at the time of hitting a ball and is difficult to receive a centrifugal force during a swing. The shaft is a portion of the handle excluding the head of the golf club 3 and includes a grip. However, the sensor unit 10 may be attached to a part of the user 2 (for example, a hand or a glove), or may be attached to an accessory such as a wristwatch.

  The user 2 performs a swing motion of hitting the golf ball 4 according to a predetermined procedure. FIG. 4 is a diagram showing a procedure of operations performed until the user 2 hits the ball in the present embodiment. As shown in FIG. 4, the user 2 first performs an input operation such as body information of the user 2 and information (golf club information) regarding the golf club 3 used by the user 2 via the swing analysis device 20 (S1). . The body information includes at least one piece of information on the height, arm length, and leg length of the user 2, and may further include sex information and other information. The golf club information includes information on the length of the golf club 3 (club length) and information on at least one of the types (counts) of the golf club 3. Next, the user 2 performs a measurement start operation (operation for causing the sensor unit 10 to start measurement) via the swing analysis device 20 (S2). Next, the user 2 receives a notification (for example, a notification by voice) instructing to take an address posture (basic posture before starting the swing) from the swing analysis device 20 (Y in S3), and then the shaft of the golf club 3 The address is positioned so that its longitudinal direction is perpendicular to the target line (the target direction of the hit ball), and it stops (S4). Next, after receiving notification (for example, notification by voice) that permits the swing from the swing analysis device 20 (Y in S5), the user 2 performs a swing motion and hits the golf ball 4 (S6).

  The posture of the exercise tool when the user 2 takes the address posture is an example of the basic posture of the exercise equipment. Note that the posture of the exercise tool when the user 2 is in the posture before the start of the swing may be the basic posture of the exercise tool.

  FIG. 5 is a diagram illustrating an example of an input screen for body information and golf club information displayed on the display unit 25 (see FIG. 9) of the swing analysis apparatus 20. In step S1 of FIG. 4, the user 2 inputs physical information such as height, gender, age, and country on the input screen shown in FIG. 5, and enters golf club information such as club length (shaft length) and count. input. The information included in the body information is not limited to this. For example, the body information may include information on at least one of the length of the arm and the length of the leg instead of the height or together with the height. Similarly, the information included in the golf club information is not limited to this. For example, the golf club information may not include information on either the club head or the count, or may include other information.

When the user 2 performs the measurement start operation in step S2 of FIG. 4, the swing analysis apparatus 20 transmits a measurement start command to the sensor unit 10, and the sensor unit 10 receives the measurement start command and receives the triaxial acceleration and the triaxial angular velocity. Start measuring. The sensor unit 10 measures the triaxial acceleration and the triaxial angular velocity at a predetermined cycle (for example, 1 ms), and sequentially transmits the measured data to the swing analysis apparatus 20. Communication between the sensor unit 10 and the swing analysis device 20 may be wireless communication or wired communication.

  The swing analysis device 20 notifies the user 2 of the permission to start the swing shown in step S5 of FIG. 4, and then the swing motion in which the user 2 hits the golf club 3 based on the measurement data of the sensor unit 10. (Step S6 in FIG. 4) is analyzed.

  As shown in FIG. 6, the swing operation performed by the user 2 in step S <b> 6 of FIG. 4 is a half-way back and back swing in which the shaft of the golf club 3 is horizontal during the back swing after the start of the swing (back swing). It includes an operation that reaches the impact (hit ball) of hitting the golf ball 4 through each state of the top that switches from down to down swing and the half-way down state in which the shaft of the golf club 3 becomes horizontal during the down swing. Then, the swing analysis device 20 generates swing analysis data including the time (date and time) when the swing was performed, the identification information and sex of the user 2, the type of the golf club 3, and information on the analysis result of the swing motion, and the network 40 (See FIG. 1).

  The server device 30 receives and stores the swing analysis data transmitted from the swing analysis device 20 via the network 40. Therefore, every time the user 2 performs a swing motion according to the procedure of FIG. 4, the swing analysis data generated by the swing analysis device 20 is stored in the server device 30, and a swing analysis data list is constructed.

  For example, the swing analysis device 20 may be realized by an information terminal (client terminal) such as a smartphone or a personal computer, and the server device 30 may be realized by a server that processes a request from the swing analysis device 20.

  The network 40 may be a wide area network (WAN: World Area Network) such as the Internet or a local area network (LAN). Alternatively, the swing analysis device 20 and the server device 30 may communicate without going through the network 40 by, for example, short-range wireless communication or wired communication.

  In the present embodiment, when the user 2 activates the swing analysis application via the operation unit 23 (see FIG. 9) of the swing analysis device 20, the swing analysis device 20 communicates with the server device 30, and the swing analysis device 20 For example, a swing analysis data selection screen as shown in FIG. 7 is displayed on the display unit 25. In this selection screen, each swing analysis data of the user 2 included in the swing analysis data list stored in the server device 30 is displayed as the time (date and time), the type of golf club used and the analysis result of the swing. The value of the index of the section is included.

  At the left end of the selection screen shown in FIG. 7, there are check boxes associated with each swing analysis data. After the user 2 checks any one check box through the operation of the swing analysis device 20, Press the OK button at the bottom of this selection screen. Accordingly, the swing analysis device 20 communicates with the server device 30 and displays the swing analysis data associated with the check box checked on the selection screen of FIG. 7 on the display unit 25 of the swing analysis device 20 (for example, FIG. 8).

1-2. Configuration of Sensor Unit and Swing Analysis Device FIG. 9 is a diagram illustrating a configuration example of the sensor unit 10 and the swing analysis device 20. As shown in FIG. 9, in this embodiment, the sensor unit 10 includes an acceleration sensor 12, an angular velocity sensor 14, a signal processing unit 16, and a communication unit 18. However, the sensor unit 10 may have a configuration in which some of these components are appropriately deleted or changed, or other components are added as appropriate.

  The acceleration sensor 12 measures acceleration generated in each of three axis directions that intersect (ideally orthogonal) with each other, and outputs a digital signal (acceleration data) corresponding to the magnitude and direction of the measured three axis acceleration. .

  The angular velocity sensor 14 measures an angular velocity generated around each of three axes that intersect each other (ideally orthogonal), and outputs a digital signal (angular velocity data) corresponding to the magnitude and direction of the measured three-axis angular velocity. Output.

  The signal processing unit 16 receives acceleration data and angular velocity data from the acceleration sensor 12 and the angular velocity sensor 14, respectively, attaches time information to the storage unit (not shown), and stores the measurement data (acceleration data and angular velocity data). Is attached with time information to generate packet data in accordance with the communication format, and outputs the packet data to the communication unit 18.

  The acceleration sensor 12 and the angular velocity sensor 14 each have three axes that coincide with the three axes (x axis, y axis, z axis) of the orthogonal coordinate system (sensor coordinate system) defined for the sensor unit 10. Although it is ideal to be attached to the unit 10, an error in the attachment angle actually occurs. Therefore, the signal processing unit 16 performs a process of converting the acceleration data and the angular velocity data into data in the xyz coordinate system using a correction parameter calculated in advance according to the attachment angle error.

  Further, the signal processing unit 16 may perform temperature correction processing of the acceleration sensor 12 and the angular velocity sensor 14. Alternatively, a temperature correction function may be incorporated in the acceleration sensor 12 and the angular velocity sensor 14.

  The acceleration sensor 12 and the angular velocity sensor 14 may output analog signals. In this case, the signal processing unit 16 converts the output signal of the acceleration sensor 12 and the output signal of the angular velocity sensor 14 to A / Measurement data (acceleration data and angular velocity data) is generated by D conversion, and packet data for communication may be generated using these.

  The communication unit 18 transmits the packet data received from the signal processing unit 16 to the swing analysis device 20, and receives various control commands such as a measurement start command from the swing analysis device 20 and sends the control data to the signal processing unit 16. Etc. The signal processing unit 16 performs various processes according to the control command.

  As shown in FIG. 9, in this embodiment, the swing analysis apparatus 20 includes a processing unit 21, a communication unit 22, an operation unit 23, a storage unit 24, a display unit 25, a sound output unit 26, and a communication unit 27. Has been. However, the swing analysis apparatus 20 may have a configuration in which some of these components are appropriately deleted or changed, or other components are added as appropriate.

  The communication unit 22 receives the packet data transmitted from the sensor unit 10 and performs processing to send to the processing unit 21, processing to transmit a control command from the processing unit 21 to the sensor unit 10, and the like.

  The operation unit 23 performs processing to acquire data corresponding to the operation of the user 2 and send the data to the processing unit 21. The operation unit 23 may be, for example, a touch panel display, a button, a key, a microphone, or the like.

The storage unit 24 is, for example, a ROM (Read Only Memory), a flash ROM, or a RAM (Ra
ndom Access Memory) and other recording media such as hard disks and memory cards. The storage unit 24 stores programs for the processing unit 21 to perform various calculation processes and control processes, various programs and data for realizing application functions, and the like.

  In the present embodiment, the storage unit 24 stores a swing analysis program 240 that is read by the processing unit 21 and that executes a swing analysis process. The swing analysis program 240 may be stored in advance in a non-volatile recording medium (a computer-readable recording medium), or the processing unit 21 receives a swing analysis program from a server (not shown) or the server device 30 via a network. 240 may be received and stored in the storage unit 24.

  In the present embodiment, the storage unit 24 stores golf club information 242, body information 244, sensor mounting position information 246, and swing analysis data 248. For example, the user 2 operates the operation unit 23, and the specification information of the golf club 3 to be used (for example, the shaft length, the position of the center of gravity, the lie angle, the face angle, the loft angle, etc.) from the input screen of FIG. Or at least a part of the information), and the inputted specification information may be used as the golf club information 242. Alternatively, the user 2 inputs the model number of the golf club 3 (or is selected from the model number list) in step S1 of FIG. 4 and is input from the specification information for each model number stored in advance in the storage unit 24. The specification information of the model number may be used as the golf club information 242.

  Further, for example, the user 2 may operate the operation unit 23 to input physical information from the input screen of FIG. 5, and the input physical information may be the physical information 244. Further, for example, in step S1 of FIG. 4, the user 2 operates the operation unit 23 to input the distance between the mounting position of the sensor unit 10 and the grip end of the golf club 3, and the input distance information is obtained. The sensor mounting position information 246 may be used. Alternatively, information on the predetermined position may be stored in advance as sensor mounting position information 246 on the assumption that the sensor unit 10 is mounted at a predetermined position (for example, a distance of 20 cm from the grip end).

  The swing analysis data 248 includes information on the result of the swing motion analysis by the processing unit 21 (swing analysis unit 211), along with the time (date and time) at which the swing was performed, the identification information and sex of the user 2, and the type of the golf club 3. It is data.

  The storage unit 24 is used as a work area of the processing unit 21, and temporarily stores data acquired by the operation unit 23, calculation results executed by the processing unit 21 according to various programs, and the like. Furthermore, the memory | storage part 24 may memorize | store the data which require long-term preservation | save among the data produced | generated by the process of the process part 21. FIG.

  The display unit 25 displays the processing results of the processing unit 21 as characters, graphs, tables, animations, and other images. The display unit 25 may be, for example, a CRT, LCD, touch panel display, head mounted display (HMD), or the like. In addition, you may make it implement | achieve the function of the operation part 23 and the display part 25 with one touchscreen type display.

  The sound output unit 26 outputs the processing result of the processing unit 21 as sound such as sound or buzzer sound. The sound output unit 26 may be, for example, a speaker or a buzzer.

The communication unit 27 performs data communication with the communication unit 32 (see FIG. 22) of the server device 30 via the network 40. For example, the communication unit 27 performs a process of receiving the swing analysis data 248 from the processing unit 21 and transmitting it to the communication unit 32 of the server device 30 after the end of the swing analysis process. Further, for example, the communication unit 27 receives information necessary for displaying the selection screen of FIG. 7 from the communication unit 32 of the server device 30 and sends the information to the processing unit 21, or processes the selection information on the selection screen of FIG. 7. A process of receiving from the unit 21 and transmitting to the communication unit 32 of the server device 30 is performed. For example, the communication unit 27 performs processing for receiving information necessary for displaying the display screen of FIG. 8 from the communication unit 32 of the server device 30 and sending the information to the processing unit 21.

  The processing unit 21 performs processing for transmitting a control command to the sensor unit 10 via the communication unit 22 and various types of calculation processing for data received from the sensor unit 10 via the communication unit 22 according to various programs. In addition, the processing unit 21 performs processing of reading the swing analysis data 248 from the storage unit 24 and transmitting it to the server device 30 via the communication unit 27 according to various programs. Further, the processing unit 21 transmits various types of information to the server device 30 via the communication unit 27 according to various programs, and various screens (each of FIGS. 7 and 8) based on the information received from the server device 30. Screen). The processing unit 21 performs other various control processes.

  In particular, in the present embodiment, the processing unit 21 executes the swing analysis program 240, whereby the data acquisition unit 210, the swing analysis unit 211, the image data generation unit 212, the storage processing unit 213, the display processing unit 214, and the sound output. It functions as the processing unit 215 and performs a process of analyzing the swing motion of the user 2 (swing analysis process).

  The data acquisition unit 210 receives the packet data received from the sensor unit 10 by the communication unit 22, acquires time information and measurement data from the received packet data, and performs processing to send to the storage processing unit 213. Further, the data acquisition unit 310 receives information necessary for displaying various screens (such as the screens in FIGS. 7 and 8) received by the communication unit 27 from the server device 30 and sends the information to the image data generation unit 212. I do.

  The storage processing unit 213 performs read / write processing of various programs and various data for the storage unit 24. For example, the storage processing unit 213 associates the time information received from the data acquisition unit 210 with the measurement data and stores the information in the storage unit 24, various information calculated by the swing analysis unit 211, the swing analysis data 248, and the like. Processing to be stored in the storage unit 24 is performed.

  The swing analysis unit 211 analyzes the swing motion of the user 2 using the measurement data output from the sensor unit 10 (measurement data stored in the storage unit 24), the data from the operation unit 23, and the like. A process for generating swing analysis data 248 including information on the time (date and time) of the user, identification information and sex of the user 2, the type of the golf club 3, and the analysis result of the swing motion is performed. In particular, in the present embodiment, the swing analysis unit 211 calculates the value of each index of the swing as at least part of the information on the analysis result of the swing motion.

  The swing analysis unit 211 may calculate at least one virtual plane as a swing index. For example, the at least one imaginary plane includes a shaft plane SP (an example of a first imaginary plane) and a Hogan plane HP (an example of a second imaginary plane) that forms a first angle with the shaft plane SP, which will be described later. The analysis unit 211 may calculate “shaft plane SP” and “Hogan plane HP” as this index.

Further, the swing analysis unit 211 may calculate the position of the head of the golf club 3 at the first timing during the backswing as a swing index. For example, the first timing is a halfway back in which the longitudinal direction of the golf club 3 is in the direction along the horizontal direction during the backswing, and the swing analysis unit 211 uses the “halfway back” described later as this index. The “position of the head at the time” may be calculated.

  Further, the swing analysis unit 211 may calculate the position of the head of the golf club 3 at the second timing during the downswing as a swing index. For example, the second timing is when the golf club 3 is halfway down during the downswing in which the longitudinal direction of the golf club 3 is along the horizontal direction, and the swing analysis unit 211 uses the “halfway down” described later as this index. The “position of the head at the time” may be calculated.

  Further, the swing analysis unit 211 may calculate an index based on the incident angle of the head of the golf club 3 at impact (at the time of hitting) as an index of swing. For example, the swing analysis unit 211 may calculate “club path (incident angle) ψ” and “attack angle”, which will be described later, as this index.

  Further, the swing analysis unit 211 may calculate an index based on the inclination of the head of the golf club 3 at impact (at the time of hitting) as an index of swing. For example, the swing analysis unit 211 may calculate “(absolute) face angle φ” and “relative face angle η”, which will be described later, as this index.

  In addition, the swing analysis unit 211 may calculate an index based on the speed of the golf club 3 at impact (at the time of hitting) as an index of swing. For example, the swing analysis unit 211 may calculate “head speed” described later as the index.

In addition, the swing analysis unit 211 uses the rotation of the shaft of the golf club 3 at a predetermined timing from the start of the back swing to the impact (at the time of hitting the ball) as a swing index with the longitudinal direction of the shaft as the rotation axis. An index based on a rotation angle around an axis (hereinafter referred to as a major axis) may be calculated. The rotation angle around the major axis of the golf club 3 may be an angle obtained by rotating the golf club 3 around the major axis from a reference timing to the predetermined timing. The reference timing may be at the start of the backswing or at the address. Further, the predetermined timing may be when shifting from the backswing to the downswing (at the top). For example, the swing analysis unit 211 may calculate a “shaft shaft rotation angle θ _top at the time of _top ”, which will be described later, as this index.

In addition, the swing analysis unit 211 may calculate an index based on the amount of deceleration of the grip of the golf club 3 during the downswing as a swing index. For example, the swing analysis unit 211 may calculate a “grip deceleration rate R _V ” described later as the index.

In addition, the swing analysis unit 211 may calculate an index based on the deceleration period of the grip of the golf club 3 in the downswing as the swing index. For example, the swing analysis unit 211 may calculate a “grip deceleration time rate R _T ” described later as the index.

  However, the swing analysis unit 211 may not calculate values of some of these indexes as appropriate, or may calculate values of other indexes.

  The image data generation unit 212 performs processing for generating image data corresponding to the image displayed on the display unit 25. For example, the image data generation unit 212 generates image data corresponding to the selection screen illustrated in FIG. 7 and the display screen illustrated in FIG. 8 based on various types of information received by the data acquisition unit 210.

The display processing unit 214 performs processing for causing the display unit 25 to display various images (including characters and symbols in addition to images corresponding to the image data generated by the image data generation unit 212). For example, the display processing unit 214 displays the selection screen illustrated in FIG. 7, the display screen illustrated in FIG. 8, and the like on the display unit 25 based on the image data generated by the image data generation unit 212. Further, for example, the image data generation unit 212 may display an image, a character, or the like for notifying the user 2 of permission to start the swing on the display unit 25 in step S5 of FIG. In addition, for example, the display processing unit 214 may display text such as characters and symbols indicating the analysis result by the swing analysis unit 211 automatically or in response to an input operation of the user 2 after the swing motion of the user 2 is completed. Information may be displayed on the display unit 25. Alternatively, a display unit is provided in the sensor unit 10, and the display processing unit 214 transmits image data to the sensor unit 10 via the communication unit 22, and displays various images and characters on the display unit of the sensor unit 10. It may be displayed.

  The sound output processing unit 215 performs processing for causing the sound output unit 26 to output various sounds (including sound and buzzer sound). For example, the sound output processing unit 215 may cause the sound output unit 26 to output a sound for notifying the user 2 of permission to start the swing in step S5 of FIG. In addition, for example, the sound output processing unit 215 outputs a sound or a sound indicating an analysis result by the swing analysis unit 211 automatically or in response to an input operation of the user 2 after the user 2 swings. You may make it output from the output part 26. FIG. Alternatively, a sound output unit is provided in the sensor unit 10, and the sound output processing unit 215 transmits various sound data and audio data to the sensor unit 10 via the communication unit 22, and the sound output unit of the sensor unit 10. Various sounds and sounds may be output.

  Note that a vibration mechanism may be provided in the swing analysis device 20 or the sensor unit 10, and various information may be converted into vibration information by the vibration mechanism and notified to the user 2.

1-3. Swing analysis processing In this embodiment, the position of the head of the golf club 3 at the time of addressing (at rest) is the origin, the target line indicating the target direction of the hit ball is the X axis, and the axis on the horizontal plane perpendicular to the X axis is the Y axis An XYZ coordinate system (global coordinate system) is defined with the vertical direction (the direction opposite to the direction of gravitational acceleration) as the Z axis. Then, the swing analysis unit 211 uses the measurement data (acceleration data and angular velocity data) of the sensor unit 10 to calculate each index value, and the sensor unit from the address in the XYZ coordinate system (global coordinate system). 10 positions and orientations are calculated in time series. Further, the swing analysis unit 211 detects each timing of the swing start, top, and impact shown in FIG. 6 using measurement data (acceleration data or angular velocity data) of the sensor unit 10. Then, the swing analysis unit 211 uses the time series data of the position and orientation of the sensor unit 10 and the timings of the start of the swing, the top, and the impact, and each index of the swing (eg, shaft plane, hogan plane, halfway). Calculate the values of head position at back, head position at halfway down, face angle, club path (incident angle), shaft shaft rotation angle at top, head speed, grip deceleration rate, grip deceleration time rate, etc. The swing analysis data 248 is generated.

[Calculation of position and orientation of sensor unit 10]
When the user 2 performs the operation of step S4 in FIG. 4, first, the swing analysis unit 211 determines that the user 2 does not exceed the threshold for a predetermined amount of time, such as the amount of change in acceleration data measured by the acceleration sensor 12. It is determined that the camera is stationary with the address posture. Next, the swing analysis unit 211 calculates an offset amount included in the measurement data using the measurement data (acceleration data and angular velocity data) within the predetermined time. Next, the swing analysis unit 211 subtracts an offset amount from the measurement data to perform bias correction, and uses the bias-corrected measurement data to detect a sensor during the swing operation of the user 2 (during operation in step S6 in FIG. 4). The position and orientation of the unit 10 are calculated.

  Specifically, first, the swing analysis unit 211 uses the acceleration data measured by the acceleration sensor 12, the golf club information 242 and the sensor mounting position information 246 when the user 2 is stationary in the XYZ coordinate system (global coordinate system). The position (initial position) of the sensor unit 10 at the time of addressing is calculated.

FIG. 10 is a plan view of the golf club 3 and the sensor unit 10 viewed from the negative side of the X axis when the user 2 is stationary (addressing). The head position 61 of the golf club 3 is the origin O (0, 0, 0), and the coordinates of the grip end position 62 are (0, G _Y , G _Z ). Since the user 2 performs the operation of step S4 in FIG. 4, the grip end position 62 and the initial position of the sensor unit 10 have an X coordinate of 0 and exist on the YZ plane. As shown in FIG. 10, since the gravitational acceleration 1G is applied to the sensor unit 10 when the user 2 is stationary, the y-axis acceleration y (0) measured by the sensor unit 10 and the inclination angle of the shaft of the golf club 3 (the length of the shaft) The relationship between the direction and the angle α formed by the horizontal plane (XY plane) is expressed by Expression (1).

  Therefore, the swing analysis unit 211 can calculate the inclination angle α from Equation (1) using arbitrary acceleration data within an arbitrary time at the time of addressing (at rest).

Next, the swing analysis unit 211 subtracts the distance L _SG between the sensor unit 10 and the grip end included in the sensor mounting position information 246 from the shaft length L ₁ included in the golf club information 242 to obtain the sensor unit 10. The distance L _SH between the head and the head is obtained. Further, the swing analysis unit 211 determines the position of the distance L _SH from the head position 61 (origin O) in the direction specified by the tilt angle α of the shaft (the negative direction of the y-axis of the sensor unit 10). The initial position.

  Then, the swing analysis unit 211 integrates subsequent acceleration data and calculates the coordinates of the position of the sensor unit 10 from the initial position in time series.

  In addition, the swing analysis unit 211 calculates the posture (initial posture) of the sensor unit 10 when the user 2 is stationary (at the time of address) in the XYZ coordinate system (global coordinate system) using the acceleration data measured by the acceleration sensor 12. To do. Since the user 2 performs the operation of step S4 in FIG. 4, the direction of the x-axis of the sensor unit 10 coincides with the X-axis of the XYZ coordinate system at the time of the address of the user 2 (at rest), and the sensor unit 10 Since the y-axis is on the YZ plane, the swing analysis unit 211 can identify the initial posture of the sensor unit 10 from the inclination angle α of the shaft of the golf club 3.

  Then, the swing analysis unit 211 performs a rotation calculation using the angular velocity data measured by the subsequent angular velocity sensor 14 and calculates the change in posture of the sensor unit 10 from the initial posture in time series. The posture of the sensor unit 10 can be expressed by, for example, rotation angles (roll angle, pitch angle, yaw angle) around the X axis, Y axis, and Z axis, quarter-on (quaternion), and the like.

The signal processing unit 16 of the sensor unit 10 may calculate the offset amount of the measurement data and perform bias correction of the measurement data, or the acceleration sensor 12 and the angular velocity sensor 14 may incorporate a bias correction function. It may be. In these cases, the bias correction of the measurement data by the swing analysis unit 211 becomes unnecessary.

[Detect swing start, top and impact timing]
First, the swing analysis unit 211 detects the timing at which the user 2 hits the ball (impact timing) using the measurement data. For example, the swing analysis unit 211 may calculate a composite value of measurement data (acceleration data or angular velocity data) and detect an impact timing (time) based on the composite value.

Specifically, first, the swing analysis unit 211 calculates a value of a combined value n0 (t) of angular velocities at each time t using the angular velocity data (bias corrected angular velocity data at each time t). For example, assuming that the angular velocity data at time t is x (t), y (t), and z (t), the swing analysis unit 211 calculates the synthesized value n ₀ (t) of the angular velocity by the following equation (2). calculate.

Next, the swing analysis unit 211 converts the combined value n ₀ (t) of angular velocities at each time t into a combined value n (t) normalized (scaled) to a predetermined range. For example, assuming that the maximum value of the combined value of angular velocities in the measurement data acquisition period is max (n ₀ ), the swing analysis unit 211 sets the combined value n ₀ (t) of angular velocities from 0 to 0 according to the following equation (3). It is converted into a composite value n (t) normalized to a range of 100.

  Next, the swing analysis unit 211 calculates a differential dn (t) of the combined value n (t) after normalization at each time t. For example, assuming that the measurement period of the triaxial angular velocity data is Δt, the swing analysis unit 211 calculates the differential (difference) dn (t) of the synthesized value of angular velocities at time t by the following equation (4).

  FIG. 11 shows an example of triaxial angular velocity data x (t), y (t), and z (t) when the user 2 swings and hits the golf ball 4. In FIG. 11, the horizontal axis represents time (msec) and the vertical axis represents angular velocity (dps).

  FIG. 12 shows the result of calculating the combined value n0 (t) of the triaxial angular velocities from the triaxial angular velocity data x (t), y (t), z (t) of FIG. It is the figure which displayed the synthetic value n (t) normalized to 0-100 in the graph. In FIG. 12, the horizontal axis represents time (msec), and the vertical axis represents the combined value of angular velocities.

FIG. 13 is a graph obtained by calculating the derivative dn (t) from the combined value n (t) of the triaxial angular velocities in FIG. In FIG. 13, the horizontal axis represents time (msec), and the vertical axis represents the differential value of the composite value of the triaxial angular velocity. 11 and 12, the horizontal axis is displayed in 0 to 5 seconds. In FIG. 13, the horizontal axis is in 2 seconds to 2.8 seconds so that the change in the differential value before and after the impact can be seen. it's shown.

Next, the swing analysis unit 211 detects the previous time as the impact time t _impact (impact timing) among the time when the value of the derivative dn (t) of the combined value is maximum and minimum ( (See FIG. 13). In a normal golf swing, it is considered that the swing speed becomes maximum at the moment of impact. Then, since it is considered that the value of the combined value of angular velocities also changes according to the swing speed, the swing analysis unit 211 has a timing at which the differential value of the combined value of angular velocities becomes maximum or minimum in a series of swing operations (that is, The timing at which the differential value of the combined value of the angular velocities becomes the maximum positive value or the minimum negative value) can be regarded as the impact timing. In addition, since the golf club 3 vibrates due to the impact, it is considered that the timing at which the differential value of the combined value of the angular velocities is the maximum and the timing at which the differential is the minimum occurs. Conceivable.

Next, the swing analysis unit 211 detects the time of the minimum point where the composite value n (t) approaches 0 before the _impact time t _impact as the top time t _top (top timing) (see FIG. 12). ). In a normal golf swing, it is considered that after the start of the swing, the operation is temporarily stopped at the top, and then the swing speed is gradually increased to cause an impact. Therefore, the swing analysis unit 211 can recognize the timing at which the combined value of the angular velocities approaches 0 and becomes minimum before the impact timing as the top timing.

Next, the swing analysis unit 211 sets a section in which the composite value n (t) is equal to or less than a predetermined threshold before and after the _top time t _top as a top section, and the composite value n (t) is before the start time of the top section. The last time that is less than or equal to the predetermined threshold is detected as the time t _start of the swing start (back swing start) (see FIG. 12). In a normal golf swing, it is unlikely that the swing operation starts from a stationary state and stops until the top. Therefore, the swing analysis unit 211 can recognize the last timing before the combined value of the angular velocities is equal to or less than the predetermined threshold before the top section as the timing for starting the swing motion. Note that the swing analysis unit 211 may detect the time of the minimum point at which the composite value n (t) approaches 0 before the _top time t _top as the swing start time t _start .

  Note that the swing analysis unit 211 can detect the timing of the start of the swing, the top, and the impact in the same manner using the triaxial acceleration data.

[Calculation of shaft plane and Hogan plane]
The shaft plane is a first virtual plane that is specified by the target line (the target direction of the hit ball) and the longitudinal direction of the shaft of the golf club 3 at the time of address before the user 2 starts swinging (still state). In addition, the Hogan plane is a virtual line connecting the vicinity of the shoulder of the user 2 (such as the base of the shoulder or neck) and the golf club head (or the golf ball 4) and the target line (the target direction of the hit ball) at the address of the user 2 ).

  FIG. 14 is a diagram illustrating a shaft plane and a Hogan plane. FIG. 14 also shows the X axis, Y axis, and Z axis of the XYZ coordinate system (global coordinate system).

As shown in FIG. 14, in the present embodiment, the first line segment 51 as the first axis along the target direction of the hit ball and the second line as the second axis along the longitudinal direction of the shaft of the golf club 3. And a virtual plane having four vertices U1, U2, S1, and S2 is defined as a shaft plane SP (first virtual plane). In the present embodiment, the head position 61 of the golf club 3 at the time of addressing is the origin O (0, 0, 0) of the XYZ coordinate system, and the second line segment 52 is the head position 61 (origin O of the golf club 3). ) And the grip end position 62. The first line segment 51 is a line segment having a length UL with U1 and U2 on the X axis as both ends and the origin O as a midpoint. Since the user 2 performs the operation of step S4 of FIG. 4 at the time of addressing, the shaft of the golf club 3 becomes perpendicular to the target line (X axis), so the first line segment 51 is the length of the shaft of the golf club 3 This is a line segment orthogonal to the direction, that is, a line segment orthogonal to the second line segment 52. The swing analysis unit 211 calculates the coordinates of the four vertices U1, U2, S1, and S2 in the XYZ coordinate system as the shaft plane SP.

Specifically, first, the swing analysis unit 211 uses the inclination angle α and the shaft length L ₁ included in the golf club information 242 to determine the coordinates (0, G) of the grip end position 62 of the golf club 3. _Y , G _Z ) is calculated. As shown in FIG. 10, the swing analysis unit 211 can calculate G _Y and G _Z using Equation (5) and Equation (6) using the shaft length L ₁ and the inclination angle α. .

Next, the swing analysis unit 211 multiplies the coordinates (0, G _Y , G _Z ) of the grip end position 62 of the golf club 3 by the scale factor S, and the midpoint S3 of the vertex S1 and the vertex S2 of the shaft plane SP. The coordinates of (0, S _Y , S _Z ) are calculated. That is, the swing analysis unit 211 calculates _SY and _SZ , respectively, according to the equations (7) and (8).

FIG. 15 is a cross-sectional view of the shaft plane SP of FIG. 14 taken along the YZ plane, as viewed from the negative side of the X axis. As shown in FIG. 15, the length of the line segment connecting the midpoint S3 of the vertex S1 and the vertex S2 and the origin O (the width of the shaft plane SP in the direction orthogonal to the X axis) is the length of the second line segment 52. It is the S multiple of _{L 1.} The scale factor S is set to a value such that the trajectory of the golf club 3 during the swing motion of the user 2 fits in the shaft plane SP. For example, when the length of the arm of the user 2 is L2, the width S × L ₁ in the direction orthogonal to the X axis of the shaft plane SP is twice the sum of the shaft length L ₁ and the arm length L _2. The scale factor S may be set as shown in Equation (9) so that

Further, the arm length L ₂ of the user ₂ has a correlation with the height L _{0 of} the user 2, and is represented by a correlation equation such as Expression (10) when the user 2 is male based on statistical information. When the user 2 is a woman, it is expressed by a correlation equation such as equation (11).

Therefore, the swing analysis unit 211 calculates the user's arm length L _{2 according} to the equation (10) or the equation (11) using the height L ₀ and the gender of the user 2 included in the body information 244. Can do.

Next, the swing analysis unit 211 uses the coordinates (0, S _Y , S _Z ) of the midpoint S3 and the width of the shaft plane SP in the X-axis direction (the length of the first line segment 51) UL. The coordinates of the vertex U1 of the SP (-UL / 2, 0, 0), the coordinates of the vertex U2 (UL / 2, 0, 0), the coordinates of the vertex S1 (-UL / 2, S _Y , S _Z ), The coordinates (UL / 2, S _Y , S _Z ) are calculated. The width UL in the X-axis direction is set to a value such that the trajectory of the golf club 3 during the swing motion of the user 2 is within the shaft plane SP. For example, even if the width UL in the X-axis direction is the same as the width S × L ₁ in the direction orthogonal to the X-axis, that is, twice the sum of the shaft length L ₁ and the arm length L _2. Good.

  In this way, the swing analysis unit 211 can calculate the coordinates of the four vertices U1, U2, S1, and S2 of the shaft plane SP.

  Moreover, as shown in FIG. 14, in this embodiment, the first line segment 51 as the first axis and the third line segment 53 as the third axis are included, and U1, U2, H1, and H2 are set to four. A virtual plane having two vertices is defined as a Hogan plane HP (second virtual plane). The third line segment 53 is a line segment that connects a predetermined position 63 in the vicinity of the line segment that connects both shoulders of the user 2 and the head position 62 of the golf club 3. However, the third line segment 53 may be a line segment that connects the predetermined position 63 and the position of the golf ball 4. The swing analysis unit 211 calculates the coordinates of the four vertices U1, U2, H1, and H2 in the XYZ coordinate system as the Hogan plane HP.

Specifically, first, the swing analysis unit 211 determines the user 2 based on the coordinates (0, G _Y , G _Z ) of the grip end position 62 of the golf club 3 at the time of addressing (at rest) and the physical information 244. The predetermined position 63 is estimated using the arm length L ₂ and the coordinates (A _X , A _Y , A _Z ) are calculated.

FIG. 16 is a cross-sectional view of the Hogan plane HP of FIG. 14 taken along the YZ plane, as viewed from the negative side of the X axis. In FIG. 16, the midpoint of the line segment connecting both shoulders of the user 2 is a predetermined position 63, and the predetermined position 63 exists on the YZ plane. Therefore, the X-coordinate _{A X} a predetermined position 63 is zero. Then, as shown in FIG. 16, the swing analysis unit 211 has a predetermined position 63 that is a position obtained by moving the grip end position 62 of the golf club 3 in the positive direction of the Z axis by the arm length L ₂ of the user 2. Presume that there is. Accordingly, the swing analyzer 211, a Y coordinate _{A Y} of the predetermined position 63 to the same value as the Y-coordinate _{G Y} position 62 of the grip end. Further, the swing analysis unit 211 calculates the Z coordinate _{A Z} of predetermined positions 63, as in Equation (12), as the sum of the length _{L 2} of the arm of the Z coordinate _{G Z} and user 2 position 62 of the grip end To do.

Next, the swing analysis unit 211 multiplies the Y coordinate A _Y and the Z coordinate _AZ of the predetermined position 63 by the scale factor H, respectively, and coordinates (0, H) of the midpoint H3 of the vertex H1 and the vertex H2 of the Hogan plane HP. _Y , H _Z ) is calculated. That is, the swing analysis unit 211 calculates H _Y and H _{Z according} to the equations (13) and (14), respectively.

As shown in FIG. 16, the length of the line segment connecting the midpoint H3 of the vertex H1 and the vertex H2 and the origin O (the width in the direction perpendicular to the X axis of the Hogan plane HP) is the length of the third line segment 53. It becomes H times L3. This scale factor H is set to a value such that the trajectory of the golf club 3 during the swing motion of the user 2 falls within the Hogan plane HP. For example, the Hogan plane HP may have the same shape and size as the shaft plane SP. In this case, the width H × L ₃ in the direction orthogonal to the X axis of the Hogan plane HP matches the width S × L ₁ in the direction orthogonal to the X axis of the shaft plane SP, and the length L of the shaft of the golf club 3 _This is twice the sum of the arm length L ₂ of ₁ and the user 2. Therefore, the swing analysis unit 211 can calculate the scale factor H by the equation (15).

Further, the swing analysis unit 211 can calculate the length L3 of the third line segment 53 by using the Y coordinate _AY and the Z coordinate _AZ of the predetermined position 63 according to the equation (13).

Next, the processing unit 21 uses the coordinates (0, H _Y , H _Z ) of the midpoint H3 and the width (the length of the first line segment 51) UL of the Hogan plane HP in the X-axis direction to use the Hogan plane HP. The coordinates of the vertex H1 (−UL / 2, H _Y , H _Z ) and the coordinates of H2 (UL / 2, H _Y , H _Z ) are calculated. Since the two vertices U1 and U2 of the Hogan plane HP are common to the shaft plane SP, the swing analysis unit 211 does not need to newly calculate the coordinates of the vertices U1 and U2 of the Hogan plane HP.

  In this way, the swing analysis unit 211 can calculate the coordinates of the four vertices U1, U2, H1, and H2 of the Hogan plane HP.

An area sandwiched between the shaft plane SP (first imaginary plane) and the Hogan plane HP (second imaginary plane) is called “V zone”, and the position of the head of the golf club 3 during the backswing or downswing and the V zone Therefore, it is possible to estimate the trajectory (ball muscle) of the hit ball to some extent. For example, when the head of the golf club 3 exists in a space lower than the V zone at a predetermined timing during the backswing or downswing, it is likely to be a hook-type hit ball. In addition, when the head of the golf club 3 exists in a space higher than the V zone at a predetermined timing during the backswing or the downswing, a slicing ball is likely to occur. In this embodiment, as is apparent from FIG. 16, the first angle β formed by the shaft plane SP and the Hogan plane HP is equal to the shaft length L ₁ of the golf club 3 and the arm length L ₂ of the user 2. Will be decided accordingly. That is, since the first angle β is not a fixed value but is determined according to the type of the golf club 3 and the body of the user 2, the shaft plane SP and the Hogan plane HP (V Zone) is calculated.

[Calculation of head position at halfway back and halfway down]
The head position at the time of halfway back is the position of the head immediately before or immediately after the halfway back, and the head position at the time of halfway back is the position of the head immediately before, immediately after or immediately after the halfway back.

First, the swing analysis unit 211 uses the position and posture of the sensor unit 10 at each time t from the swing start time t _start to the impact time t _impact to determine the head position and the grip end position at each time t. calculate.

Specifically, at each time t, the swing analysis unit 211 sets a position separated from the position of the sensor unit 10 by a distance LSH in the positive direction of the y-axis specified by the attitude of the sensor unit 10 as the head position. Calculate the coordinates of the head position. As described above, the distance L _SH is the distance between the sensor unit 10 and the head. In addition, the swing analysis unit 211 sets the grip end position as a grip end position at each time t from the position of the sensor unit 10 by the distance LSG in the negative y-axis direction specified by the attitude of the sensor unit 10. Calculate the coordinates of the end position. As described above, the distance LSG is a distance between the sensor unit 10 and the grip end.

  Next, the swing analysis unit 211 detects the halfway back timing and the halfway down timing using the coordinates of the head position and the coordinates of the grip end.

Specifically, the swing analysis unit 211 calculates a difference ΔZ between the Z coordinate of the head position and the Z coordinate of the grip end position at each time t from the swing start time t _start to the impact time t _impact. . Then, the swing analysis unit 211 detects a time t _{HWB at} which the sign of ΔZ is inverted between the swing start time t _start and the top time t _top as the halfway back timing. Further, the swing analysis unit 211 detects a time t _{HWD at} which the sign of ΔZ is inverted between the _top time t _top and the impact time t _impact as the halfway down timing.

Then, the swing analysis unit 211 sets the head position at time t _{HWB as} the head position at the time of halfway back, and sets the head position at time t _{HWD as} the head position at the time of halfway down.

[Calculation of head speed]
The head speed is the magnitude of the head speed at the time of impact (instant of impact, immediately before impact, or immediately after impact). For example, the swing analyzer 211, the difference of the coordinates of the position of the head at time t _impact of the impact and the position of the coordinates of the head at the previous time, to calculate the velocity of the head at time t _impact of the impact. Then, the swing analysis unit 211 calculates the magnitude of the head speed as the head speed.

[Calculation of face angle and club path (incident angle)]
The face angle is an index based on the inclination of the head of the golf club 3 at impact, and the club path (incident angle) is an index based on the trajectory of the head of the golf club 3 at impact.

  FIG. 17 is a diagram for explaining the face angle and the club path (incident angle). FIG. 17 shows the golf club 3 (only the head is shown) on the XY plane viewed from the positive side of the Z axis in the XYZ coordinate system. In FIG. 17, reference numeral 74 denotes a face surface (striking surface) of the golf club 3, and 75 denotes a hitting point. Reference numeral 70 denotes a target line indicating the target direction of the hit ball, and reference numeral 71 denotes a plane orthogonal to the target line 70. Further, 76 is a curve representing the locus of the head of the golf club 3, and 72 is a tangent to the curve 76 at the hitting point 75. At this time, the face angle φ is an angle formed by the plane 71 and the face surface 74, in other words, an angle formed by the straight line 73 orthogonal to the face surface 74 and the target line 70. The club path (incident angle) ψ is an angle formed by the tangent line 72 (the direction in which the head passes the ball hitting point 75 in the XY plane) and the target line 70.

For example, the swing analysis unit 211 assumes that the angle formed by the face surface of the head and the x-axis direction is always constant (for example, orthogonal), and determines from the posture of the sensor unit 10 at the _impact time t _impact to the face surface. Calculate the direction of orthogonal straight lines. Then, the swing analysis unit 211 calculates the angle (face angle) φ formed by the straight line 73 and the target line 70 by setting the Z-axis component of the straight line direction to 0 as the straight line 73 direction.

Further, for example, the swing analysis unit 211 sets the direction of the speed (that is, the speed of the head in the XY plane) where the Z-axis component of the head speed at _impact time t _impact is 0 as the direction of the tangent 72, An angle (club path (incident angle)) ψ formed with the target line 70 is calculated.

  Note that the face angle φ is also referred to as an absolute face angle because it represents the inclination of the face surface 74 relative to the target line 70 whose direction is fixed regardless of the direction of incidence on the ball hitting point 75 of the head. On the other hand, the angle η formed by the straight line 73 and the tangent line 72 is referred to as a relative face angle because it represents the inclination of the face surface 74 with respect to the direction of incidence on the hitting point 75 of the head. The relative face angle η is an angle obtained by subtracting the club path (incident angle) ψ from the (absolute) face angle φ.

[Calculation of attack angle]
The attack angle is an index based on the trajectory of the head of the golf club 3 at the impact time t _impact as with the club path (incident angle). However, the attack angle is calculated by calculating the trajectory angle in a plane different from the club path (incident angle).

The swing analysis unit 211 calculates an angle formed by the head velocity vector at the impact time t _impact and the Z axis on the XZ plane as an attack angle. For example, when the head moving direction at the impact time t _impact is a so-called upper blow direction, the attack angle is a positive value, and when the head is so-called down blow, the attack angle is a negative value, so-called level blow direction. The attack angle is zero when.

[Swing rhythm calculation]
The swing rhythm is an index indicating the ratio of the required time of each section of the swing.

For example, the swing analysis unit 211 determines the period of the entire swing as follows: swing start time t _start , half way back time t _HWB , top time t _top , half way down time t _HWD , grip deceleration start time t _vmax , impact time t _impact Is divided into a plurality of sections, and the required time for each section is calculated.

  Then, the swing analysis unit 211 calculates a ratio of required times of two different sections as a swing rhythm. Two sections that are different from each other may be two sections that do not overlap each other, or may be two sections that have a relationship in which one includes the other. Further, the two sections different from each other may be two sections designated in advance by the user 2.

For example, the swing analysis unit 211 calculates the time required for the back swing (the time required for the section from the swing start time t _start to the top time t _top ) and the time required for the down swing (from the top time t _top to the impact time t _impact ). The ratio obtained by dividing by the required time of the section is calculated as a swing rhythm.

[Calculation of hand-up angle]
The hand-up angle is one of the indexes indicating the shaft posture deviation between the swing start time t _start and the impact time t _impact, and is an inclination angle α (t in the lie angle direction of the shaft at the swing start time t _start . _start ) and an inclination angle α (t _impact ) in the lie angle direction of the shaft at the impact time t _impact . Instead of the inclination angle α (t _start ) in the lie angle direction of the shaft at the swing start time t _start , the inclination angle α (t _address ) in the lie angle direction of the shaft at the address time t _address can also be used. In addition, the inclination angle α in the lie angle direction is an angle indicated by a symbol α in FIG. 10, and is an angle formed by the y axis and the Y axis in the YZ plane.

For example, the swing analysis unit 211 calculates the tilt angle α (t _start ) at the _start of the swing based on the posture of the golf club 3 at the swing start time t _start (the posture represented by the global coordinates).

In addition, the swing analysis unit 211 calculates an inclination angle α (t _impact ) at the impact time t _impact based on, for example, the posture of the golf club 3 at the impact time t _impact (posture expressed in global coordinates).

Further, the swing analysis unit 211, for example, based on the ratio of the z-axis acceleration component _{a z} and y-axis acceleration component _{a y} in the address time _{t address (a y / a z} ), the tilt angle in the address time _{t address} alpha ( t _address ) is calculated. Note that the swing analysis unit 211 can also obtain the tilt angle α (t _address ) at the address time by applying the y-axis acceleration component a _y to “y (0)” in Expression (1).

Further, the swing analysis unit 211 subtracts the inclination angle α (t _start ) at the swing start time t _start from the inclination angle α (t _impact ) at the impact time t _impact , for example, to thereby determine the hand-up angle Δα = α (t _impact ) −α (t _start ).

In addition, the swing analysis unit 211 subtracts the inclination angle α (t _address ) at the address time t _address from the inclination angle α (t _impact ) at the impact time t _impact , for example, so that the hand-up angle Δα = α (t _impact). ) -Α (t _address ) may be calculated.

[Calculation of shaft rotation angle at top]
The shaft shaft rotation angle θ _top at the time of _top is an angle (relative rotation angle) that the golf club 3 rotates around the shaft axis from the reference timing to the top timing. The reference timing is, for example, at the start of backswing or at the time of addressing. In this embodiment, when the user 2 is right-handed, the tightening direction of the right screw with the tip directed to the head side of the golf club 3 (the clockwise direction when viewing the head side from the grip end side) is the shaft axis. A positive direction of the rotation angle θ _top is assumed. Conversely, when the user 2 is left-handed, the shaft is rotated in the direction of tightening the left screw with the tip facing the golf club 3 head side (counterclockwise when viewing the head side from the grip end side). The positive direction of the angle θ _top is assumed.

FIG. 18 is a diagram illustrating an example of a temporal change in the shaft shaft rotation angle from the swing start (back swing start) to the impact. In FIG. 18, the horizontal axis represents time (s), and the vertical axis represents the shaft axis rotation angle (deg). FIG. 18 shows the shaft shaft rotation angle θ _top at the top when the swing start time (back swing start time) is the reference timing (the shaft shaft rotation angle is 0 °).

In the present embodiment, as shown in FIG. 3, the y-axis of the sensor unit 10 substantially coincides with the longitudinal direction of the golf club 3 (longitudinal direction of the golf club 3). Accordingly, for example, the swing analysis unit 211 time-integrates the y-axis angular velocity included in the angular velocity data from the swing _start time t _start (backswing start time) or from the address time to the top time t _top (top time). Then, the shaft shaft rotation angle θ _top is calculated. Similarly, the swing analysis unit 211 time-integrates the y-axis angular velocity included in the angular velocity data from the swing _start time t _start (at the _{start of the} back swing) or from the address time to the half way back time t _HWB , thereby _performing the half way The shaft shaft rotation angle θ _HWB at the back time t _HWB is calculated.

[Calculation of grip deceleration rate and grip deceleration time rate]
The grip deceleration rate is an index based on the amount of deceleration of the grip, and is a ratio between the grip speed when the grip starts to decelerate during the downswing and the grip speed at the time of impact. The grip deceleration time rate is an index based on the grip deceleration period, and is a ratio between the time from the start of deceleration of the grip during the downswing to the impact and the time of the downswing. The grip speed is preferably the speed of the part gripped by the user 2, but may be the speed of any part of the grip (for example, the grip end) or the speed of the part near the grip. May be.

FIG. 19 is a diagram illustrating an example of a temporal change in the grip speed in the downswing. In FIG. 19, the horizontal axis represents time (s), and the vertical axis represents grip speed (m / s). In FIG. 19, when the grip speed when the grip starts to decelerate (maximum grip speed) is V1, and the grip speed at the time of impact is V2, the grip deceleration rate R _V (unit:%) is It is represented by Formula (16).

In FIG. 19, when the time from the top until the grip starts to decelerate is T1, and the time from when the grip starts decelerating to the impact is T2, the grip deceleration time rate R _T (unit:%) is It is represented by the following formula (17).

For example, assuming that the sensor unit 10 is attached near the portion where the user 2 holds the golf club 3, the speed of the sensor unit 10 may be regarded as the grip speed. Therefore, first, the swing analysis unit 211 detects the coordinates of the position of the sensor unit 10 at each time t from the top time t _top to the impact time t _impact (during the downswing) and the sensor unit 10 at the previous time. The speed of the sensor unit 10 at each time t is calculated based on the difference from the coordinates of the position.

Next, the swing analysis unit 211 calculates the magnitude of the speed of the sensor unit 10 at each time t, and sets the maximum value as V1 and the magnitude of the speed at the _impact time _timpact as V2. In addition, the swing analysis unit 211 specifies a time _tvmax when the magnitude of the speed of the sensor unit 10 becomes the maximum value V1. Further, the swing analysis unit 211 calculates T1 = t _vmax −t _top and T2 = t _impact −t _vmax . Then, the swing analysis unit 211 calculates the grip deceleration rate R _V and the grip deceleration time rate _{RT according} to the equations (16) and (17), respectively.

The swing analysis unit 211 regards the grip end speed as the grip speed and calculates the grip end speed based on the coordinates of the position of the grip end at each time t (during the downswing), and the same calculation as above. Thus, the grip deceleration rate _RV and the grip deceleration time rate _RT may be obtained.

[Calculation of "V zone" item index]
The swing analysis unit 211 has a head position at halfway back time t _HWB , a head position at halfway down time t _HWD, and a head position at grip deceleration start time _tvmax. And the area to which the head position belonged at the top time t _top is calculated as an index. The boundaries of the plurality of areas are determined based on the shaft plane SP and Hogan plane HP (V zone), which are virtual planes determined by the address posture of the user 2.

FIG. 20 is a diagram showing an example of the relationship between the shaft plane SP and Hogan plane HP (V zone) and a plurality of regions (note that the lower part of FIG. 20 shows the shaft plane SP and Hogan plane HP and the user 2 An example of the outline of the posture was shown.) FIG. 20 shows the relationship between the shaft plane SP, the Hogan plane HP, and the five areas A to E when viewed from the negative side of the X axis (projected on the YZ plane). The region B is a predetermined space including the Hogan plane HP, and the region D is a predetermined space including the shaft plane SP. The region C is a space between the region B and the region D (a boundary surface S between the region B and a boundary surface S between the _BC and the region D).
Space between _CDs ). The region A is a space in contact with the region B at the boundary surface S _AB opposite to the region C. The region E is a space in contact with the region D at the boundary surface _SDE opposite to the region C.

Various methods for setting the boundary surface S _AB , the boundary surface S _BC , the boundary surface S _CD, and the boundary surface S _DE are conceivable. For example, on the YZ plane, the Hogan plane HP is exactly in the middle of the boundary surface S _AB and the boundary surface S _BC , and the shaft plane SP is in the middle of the boundary surface S _CD and the boundary surface S _DE . In addition, the angles around the origin O (X axis) of the regions B, C, and D can be set to be equal. That is, with respect to the first angle β formed by the shaft plane SP and the Hogan plane HP, the angles formed by the Hogan plane HP, the boundary surface SAB, and the boundary surface SBC are respectively set to β / 4. If the angles formed by S _CD and boundary surface S _DE are respectively set to β / 4, region B, region C,
Both angles of the region D are set to β / 2.

Since it is not possible to assume a swing in which the Y coordinate of the head position is negative during halfway back or halfway down, in FIG. 20, the boundary surface opposite to the boundary surface S _AB in the region A is the XZ plane. Is set. Similarly, the Z-coordinate of the head position at the half-way back or during Halfway down swing such that negative can not be assumed, the boundary surface between the boundary surface S _DE region E opposite side is set to the XY plane Yes. Of course, the boundary surfaces of the regions A and E may be set so that the angles around the origin O (X axis) of the regions A and E are also equal to the regions B, C, and D.

Specifically, first, the swing analysis unit 211 is based on the coordinates of the four vertices U1, U2, S1, and S2 of the shaft plane SP and the coordinates of the four vertices U1, U2, H1, and H2 of the Hogan plane HP. , Each boundary surface S _AB , boundary surface S _BC , boundary surface S _CD and boundary surface S _DE of the regions A to E are set.

Then, the swing analysis unit 211, the coordinates of the head position of the half-way back time _{t HWB,} the coordinates of the head position of the half-way down the time _{t HWD,} coordinates of the position of the head of the grip deceleration starting time _{t vmax,} top time _{t top} It is determined which of the areas A to E each of the head position coordinates belongs to.

[Swing analysis procedure]
FIG. 21 is a flowchart illustrating an example of a procedure of swing analysis processing by the processing unit 21. The processing unit 21 executes the swing analysis program 240 stored in the storage unit 24, thereby executing the swing analysis process, for example, according to the procedure shown in the flowchart of FIG. Hereinafter, the flowchart of FIG. 21 will be described.

  First, the processing unit 21 waits until a measurement start operation (operation in step S2 in FIG. 4) by the user 2 is performed (N in S10). When the measurement start operation is performed (Y in S10), the sensor unit 10 A measurement start command is transmitted to the sensor unit 10, and acquisition of measurement data from the sensor unit 10 is started (S12).

  Next, the processing unit 21 instructs the user 2 to take an address posture (S14). In accordance with this instruction, the user 2 takes an address posture and stops (step S4 in FIG. 4).

Next, the processing unit 21 determines whether or not the golf club 3 is stationary in a correct posture for a predetermined period using the measurement data acquired from the sensor unit 10 (S16), and when it is stationary (S16Y). The user 2 is notified of permission to start the swing (S18). Otherwise, the process proceeds to the end determination process (S24). For example, the processing unit 21 outputs a predetermined sound or notifies the user 2 of permission to start swinging by providing an LED in the sensor unit 10 and lighting the LED. Starts the swing operation (the operation in step S6 in FIG. 4) after confirming this notification.

  Next, the processing unit 21 determines whether or not an impact is detected within a predetermined period from the permission of the swing (S18) based on the measurement data acquired from the sensor unit 10 (S20), and if it is detected (S20Y). Shifts to the swing analysis data generation process (S22), otherwise shifts to the end determination process (S24).

  Next, the processing unit 21 extracts the measurement data during the swing before and after the impact from the measurement data acquired from the sensor unit 10, and calculates various indexes and trajectories based on the measurement data during the swing. Is generated and transmitted to the server device 30 (S22). Note that the processing unit 21 uses measurement data during a period in which the golf club 3 is stationary in a correct posture for bias correction and global coordinate setting regarding measurement data during a swing. Further, the processing unit 21 may include the measurement data itself during swing (so-called raw data) with respect to the swing analysis data transmitted to the server device 30.

  Next, the processing unit 21 determines whether or not a measurement end operation has been performed by the user 2 (S24), and if it has been performed (S24Y), the flow ends, and if not (S24N), The process proceeds to the address instruction process (S14).

  In the flowchart of FIG. 21, the order of the steps may be appropriately changed within a possible range, some of the steps may be deleted or changed, and other steps may be added.

1-4. Configuration of Server Device FIG. 22 is a diagram illustrating a configuration example of the server device 30. As shown in FIG. 22, in the present embodiment, the server device 30 includes a processing unit 31, a communication unit 32, and a storage unit 34. However, the server device 30 may have a configuration in which some of these components are appropriately deleted or changed, or other components are added as appropriate.

  The storage unit 34 includes, for example, various IC memories such as a ROM, a flash ROM, and a RAM, a recording medium such as a hard disk and a memory card, and the like. The storage unit 34 stores programs for the processing unit 31 to perform various calculation processes and control processes, various programs and data for realizing application functions, and the like.

  In the present embodiment, the storage unit 34 stores (saves) a swing analysis data list 341 including a plurality of swing analysis data 248 generated by the swing analysis device 20. That is, the swing analysis data 248 generated every time the processing unit 21 of the swing analysis device 20 analyzes the swing motion of the user 2 is sequentially added to the swing analysis data list 341.

  The storage unit 34 is used as a work area of the processing unit 31 and temporarily stores calculation results and the like executed by the processing unit 31 according to various programs. Furthermore, the storage unit 34 may store data that needs to be stored for a long time among the data generated by the processing of the processing unit 31.

The communication unit 32 performs data communication with the communication unit 27 (see FIG. 9) of the swing analysis device 20 via the network 40. For example, the communication unit 32 performs a process of receiving the swing analysis data 248 from the communication unit 27 of the swing analysis device 20 and sending it to the processing unit 31. Further, for example, the communication unit 32 transmits information necessary for display of the selection screen of FIG. 7 to the communication unit 27 of the swing analysis device 20, or transmits selection information on the selection screen of FIG. 7 to the communication of the swing analysis device 20. The processing received from the unit 27 and sent to the processing unit 31 is performed. Further, for example, the communication unit 32 performs processing for receiving information necessary for displaying the display screen of FIG.

  The processing unit 31 receives the swing analysis data 248 from the swing analysis device 20 via the communication unit 32 and stores it in the storage unit 34 (added to the swing analysis data list 341) according to various programs. Further, the processing unit 31 receives various types of information from the swing analysis apparatus 20 via the communication unit 32 in accordance with various programs, and information necessary for displaying various screens (the respective screens in FIGS. 7 and 8, etc.). Is transmitted to the swing analysis device 20. The processing unit 31 performs other various control processes.

  In particular, in the present embodiment, the processing unit 31 functions as the data acquisition unit 310 and the storage processing unit 312 by executing a predetermined program.

  The data acquisition unit 310 performs processing for receiving the swing analysis data 248 received by the communication unit 32 from the swing analysis device 20 and sending it to the storage processing unit 312.

  The storage processing unit 312 performs read / write processing of various programs and various data for the storage unit 34. For example, the storage processing unit 312 receives the swing analysis data 248 from the data acquisition unit 310 and stores it in the storage unit 34 (adds it to the swing analysis data list 341), or the swing analysis data stored in the storage unit 34. Processing such as reading the swing analysis data 248 from the list 341 is performed.

1-5. Processing of Server Device The processing unit 31 of the server device 30 transmits / receives data to / from the swing analysis device 20 and manages user swing analysis data for each user.

[Processing procedure of server device]
FIG. 23 is a flowchart illustrating an example of a processing procedure performed by the processing unit 21 of the swing analysis device 20 related to the processing of the server device. FIG. 24 is a flowchart showing an example of the processing procedure of the server apparatus. The processing unit 31 (an example of a computer) of the server device 30 executes the program according to the procedure of the flowchart of FIG. 24 by executing the program stored in the storage unit 34, for example. Hereinafter, the flowcharts of FIGS. 23 and 24 will be described.

  First, the processing unit 21 of the swing analysis device 20 transmits the user identification information assigned to the user 2 to the server device 30 (S100 in FIG. 23).

  Next, the processing unit 31 of the server device 30 receives the user identification information and transmits the list information of the swing analysis data 248 corresponding to the user identification information (S200 in FIG. 24).

  Next, the processing unit 21 of the swing analysis device 20 receives the list information of the swing analysis data 248 and causes the display unit 25 to display a selection screen of swing analysis data (FIG. 7) (S110 in FIG. 23).

  Then, the processing unit 21 of the swing analysis device 20 waits until the swing analysis data 248 is selected on the swing analysis data selection screen (N in S120 in FIG. 23), and when selected (Y in S120 in FIG. 23). ), The swing analysis data selection information is transmitted to the server device 30 (S130 in FIG. 23).

  Next, the processing unit 31 of the server device 30 receives the selection information of the swing analysis data (S210 in FIG. 24).

  Next, the processing unit 31 of the server device 30 transmits the selected swing analysis data (S240 in FIG. 24).

  Next, the processing unit 21 of the swing analysis device 20 receives the selected swing analysis data, and displays images (images showing various indices, images showing swing trajectories, etc.) based on the swing analysis data on the display unit 25. It is displayed (S140 in FIG. 23), and the process is terminated.

  In the flowchart of FIG. 23, the order of each process may be appropriately changed within a possible range, a part of the process may be deleted or changed, and another process may be added. Similarly, in the flowchart of FIG. 24, the order of each process may be appropriately changed within a possible range, a part of the process may be deleted or changed, and another process may be added.

1-6. V-zone item 1-6-1. Score of V Zone Item and Diagnostic Information The swing analysis apparatus 20 of the present embodiment calculates the above-mentioned V zone item indexes (four indexes) as swing analysis data, and based on these four indexes, the V zone item Acquire the score and diagnostic information of the V zone item. The four indexes of the V zone item will be described again as follows (1) to (4).

(1) Of the areas A to E, the area where the head position belongs to the halfway back time t _HWB (time t _HWB is an example of timing when the longitudinal direction of the exercise tool is along the horizontal plane during the backswing.) .

(2) among the regions A to E, a region which has the head position belongs to the top time _{t top} (time _{t top} is an example of a timing of the top.).

(3) Among the areas A to E, the area where the head position belongs to the grip deceleration start time t _vmax (natural uncock point) (time t _vmax is an example of the timing at which the gripping portion of the exercise tool starts to decelerate during the downswing. .)

(4) Of the areas A to E, the head position belongs to the halfway down time t _HWD (time _tvmax is an example of the timing when the longitudinal direction of the exercise tool is along the horizontal plane during the downswing during the downswing. is there.).

  And the memory | storage part 24 of the swing analysis apparatus 20 memorize | stores beforehand a V zone correspondence table as shown in FIG.

  As shown in FIG. 25, in the V zone correspondence table, points and diagnostic information are assigned for each arrangement pattern (hereinafter referred to as “region arrangement pattern”) in which four indices of V zone items are arranged in time series. .

  For example, in the V-zone correspondence table of FIG. 25, the number of points assigned to the region arrangement pattern “AAAA” is PV1, and assigned to the region arrangement pattern “AAAA”. The obtained diagnostic information is LV1.

Here, in the V zone correspondence table of FIG. 25, the score (score,
Level) and diagnostic information are set in advance based on the relationship between the arrangement pattern of regions for various swings and the tendency of the trajectory of the hit ball for various swings.

  For example, a relatively low score is assigned to the region arrangement pattern for a swing whose trajectory is likely to deviate from the target line, and a relatively high score is assigned to a region arrangement pattern for a swing whose trajectory is difficult to deviate from the target line. It is done. For example, the highest point (5 points) is assigned to the arrangement pattern (for example, “C-C-C-C”) of the region of the swing whose trajectory is most difficult to deviate from the target line, and the trajectory most easily deviates from the target line. The lowest point (one point) is assigned to the arrangement pattern of the region for the swing.

  Further, for example, diagnostic information indicating that the swing type is a hook system is assigned to the arrangement pattern of the swing for which the trajectory is likely to become a hook, and The diagnostic information indicating that the swing type is a slice system is assigned.

By the way, according to an ideal swing or a standard swing, the above four times t _HWB , t _top , t _vmax , t _HWD are arranged in time series order (timing arrival order) (hereinafter referred to as “timing timing”). The arrangement pattern is referred to as “t _HWB −t _top −t _vmax −t _HWD ” as shown in FIG. However, according to a non-ideal swing, the timing arrangement pattern may be “t _HWB −t _top −t _HWD −t _vmax ”.

For this reason, when the timing arrangement pattern is “t _HWB −t _top −t _HWD −t _vmax ”, the timing arrangement pattern is “t _HWB −t _top −t _vmax −t _HWD ”. It is desirable that a low score is assigned. When the timing arrangement pattern is “t _HWB −t _top −t _HWD −t _vmax ”, diagnosis information indicating that the wrist deceleration start timing is delayed from the ideal timing is assigned. It is desirable.

In order to perform such allocation, for example, the storage unit 24 stores, as the V zone correspondence table, a correspondence table applied when the timing arrangement pattern is “t _HWB −t _top −t _vmax −t _HWD ”. (Hereinafter referred to as “first V zone correspondence table”) and a correspondence table (hereinafter referred to as “second V zone”) applied when the timing arrangement pattern is “t _HWB −t _top −t _HWD −t _vmax ”. "V zone correspondence table") and 2 types are prepared. Illustration of the second V zone correspondence table is omitted.

1-6-2. Score and diagnostic information acquisition processing The swing analysis unit 211 of the swing analysis device 20 acquires the score and diagnostic information of the V zone item, for example, by the following procedures (1) to (4) in step S22 (FIG. 21). To do.

(1) The swing analysis unit 211 has timing arrangement patterns “t _HWB −t _top −t _vmax −t _HWD ” and “t _HWB −t _top −t _HWD −t _vmax ” based on the four times of the V zone item. It is determined whether or not.

  (2) The swing analysis unit 211 recognizes the arrangement pattern of the regions based on the determination result of the procedure (1) and the four indexes of the V zone item.

(3) When the timing arrangement pattern is “t _HWB −t _top −t _vmax −t _HWD ”, the swing analysis unit 211 refers to the first V zone correspondence table according to the arrangement pattern of the regions. Acquire the score and diagnostic information of the V zone item.

(4) When the timing arrangement pattern is “t _HWB −t _top −t _HWD −t _vmax ”, the swing analysis unit 211 refers to the second V zone correspondence table according to the arrangement pattern of the regions. Acquire the score and diagnostic information of the V zone item.

  The score, diagnostic information, region arrangement pattern, and timing arrangement pattern obtained by the above procedures (1) to (4) are included in the swing analysis data together with various indexes.

  In the above description, the swing analysis unit 211 uses “score” as information indicating the level of the V zone item, but information other than the score “rank 1, rank 2, rank 3,...”, “ Information such as “A rank, B rank, C rank,...”, “◯, x, Δ,...”, “High level, middle level, low level,. (However, in the following, it is assumed that “score” is used as the level of the V zone item.)

1-6-3. V-zone item display screen In the present embodiment, the user 2 selects and selects the swing analysis data related to one swing by, for example, selecting any one check box on the selection screen shown in FIG. When an OK button at the bottom of the screen is pressed (tapped with a fingertip) and a V-zone item display start operation is performed, a display screen for the V-zone item is displayed on the display unit 25.

  FIG. 26 is an example of a V-zone item display screen. As shown in FIG. 26, at the upper end portion of the V zone item display screen, a text image 25a indicating the ID of the user 2, a text image 25b indicating the number of the used golf club 3 (an example of a sports equipment), and a swing A text image 25c indicating the date and time is arranged.

  For example, the first display unit 25-1, the second display unit 25-2, the third display unit 25-3, and the fourth display unit 25-4 are provided at the lower end of the V zone item display screen. They are arranged in the horizontal direction. The first display unit 25-1, the second display unit 25-2, the third display unit 25-3, and the fourth display unit 25-4 are arranged in an area arrangement for the swing selected by the user 2. Represents a pattern.

  In FIG. 26, the four display units 25-1, 25-2, 25-3 are arranged with the arrangement destination of the four display units 25-1, 25-2, 25-3, 25-4 as the lower end of the display screen. 25-4 is the left-right direction of the display screen, but the arrangement destination may be the upper end or center of the display screen, the arrangement direction may be the left-right direction of the display screen, and the arrangement destination is the right end of the display screen. Alternatively, the arrangement direction as the left end portion or the center portion may be set as the vertical direction of the display screen.

Well, the first in the display section 25-1, time _{t HWB, t top, t vmax} , text image (in FIG. 26, "half-way to represent the time (the first time) arriving in the first of the _{t HWD} ")" And a code image ("A" in FIG. 26) representing the region to which the head position belonged at the time (the code is an example of identification data). The first display unit 25-1 is provided with a button function (function of the HWB button) for notifying the user 2 of the head position at the first time (description of the function of the HWB button). Will be described later).

The second of the display unit 25-2, time _{t HWB, t top, t vmax} , the text image (Figure 26, which represents the time (the second time) arriving in the second of the _{t HWD} "top"
) And a code image (“B” in FIG. 26) representing the region to which the head position belonged at the time. The second display unit 25-2 is provided with a button function (top button function) for notifying the user 2 of the head position at the second time (description of the function of the top button). Will be described later).

The third of the display unit 25-3, time _{t HWB, t top, t vmax} , text image that represents the time that has arrived in the third out of the _{t HWD} (3-th time) (in FIG. 26, "Natural Anne cock") And a code image (“C” in FIG. 26) representing the area to which the head position belongs at the time. The third display unit 25-3 is provided with a button function (nu button function) for notifying the user 2 of the head position at the third time (description of the function of the NU button). Will be described later).

The fourth of the display unit 25-4, time _{t HWB, t top, t vmax} , text image (Figure 26 in the "half-way down", which represents the fourth in the incoming time (the fourth time) of the _{t HWD} ) And a code image (“D” in FIG. 26) representing the region to which the head position belonged at the time. The fourth display unit 25-4 is provided with a button function (HWD button function) for notifying the user 2 of the head position at the fourth time (description of the function of the HWD button). Will be described later).

  Therefore, the user 2 changes the region arrangement pattern (that is, the transition of the region through which the head passes during the swing) according to the arrangement of the symbols given to the entire display units 25-1, 25-2, 25-3, and 25-4. ) Can be recognized. In the example of FIG. 26, the user 2 can recognize that the arrangement pattern of the region is “ABCD”.

  Also, the user 2 compares the arrangement pattern of the area for the swing when the condition is good with the arrangement pattern of the area for the swing when the condition is bad, and from the difference between the arrangement patterns of the two, You can also know what time the bad cause is during the swing. For example, the area arrangement pattern for the swing when the condition is good is “C-C-C-C”, and the arrangement pattern of the area for the swing when the condition is not good is “C-C-B-C”. ", It can be inferred that the cause of the poor condition is the posture of the golf club 3 at the fourth time (grip deceleration start time).

  As shown in FIG. 26, the display screen of the V zone item includes an image of a swing locus (the locus of the head in FIG. 26) in addition to the display units 25-1, 25-2, 25-3, and 25-4. 25C, V zone image 25K, golf club image 25L-1 at the first time, golf club image 25L-2 at the second time, and golf club image 25L-3 at the third time And the image 25L-4 of the golf club in the 4th time, and the display part 25-5 of a score are arrange | positioned. The image of the golf club at each time is created based on the position of the grip at each time, the position of the head at each time, the posture of the sensor unit 10 at each time, and the like. In FIG. 26, the locus of the head in the back swing is indicated by a dotted curve, and the locus of the head in the down swing is indicated by a solid line (the same applies to other drawings).

  Among these, a text image (“3 points / 5 points” in FIG. 26) indicating the score of the V zone item is assigned to the score display section 25-5. “5 points”, which is the denominator of “3 points / 5 points”, indicates the maximum number of points (full score). The score display unit 25-5 is provided with a button function (score button function) for notifying the user 2 of the diagnosis result of the V zone item (the function of the score button will be described later). To do).

From the display screen of the above V zone item, the user 2 confirms the area arrangement pattern (“ABCD” in FIG. 26) for his swing, and then the golf club at the first time. If you feel you want to check the posture of the golf club 3, just tap the first display unit 25-1 (here, the HWB button) with your fingertips and you want to check the posture of the golf club 3 at the second time. In such a case, the second display unit 25-2 (here, the top button) may be tapped with a fingertip, and if it is desired to confirm the posture of the golf club 3 at the third time, If the display unit 25-3 (here, the NU button) has only to be tapped with a fingertip and it is desired to confirm the posture of the golf club 3 at the fourth time, the fourth display unit 25-4 (here, WD button) may be tap at your fingertips. In addition, when the user 2 feels that the diagnosis result of the V zone item should be confirmed, the user 2 may tap the score display unit 25-5 (score button) with a fingertip.

  FIG. 27 is an example of a display screen when the first display unit 25-1 (here, the HWB button) is tapped. As shown in FIG. 27, when the first display unit 25-1 (here, the HWB button) is tapped, the first display unit 25-1 (here, the HWB button) is selected (in FIG. 27, the selected state is changed). (It is represented by a solid line frame and hatching.) The golf club image 25L-1 at the first time is displayed more emphasized than the golf club images 25L-2, 25L-3, 25L-4 at other times. The In the example shown in FIG. 27, the emphasized image 25L-1 is displayed with a relatively high contrast (thick solid line), and the unenhanced images 25L-2 to 25L-4 are relatively low contrast (thin dotted lines). Is displayed.

  FIG. 28 is an example of a display screen when the second display unit 25-2 (here, the top button) is tapped. As shown in FIG. 28, when the second display unit 25-2 (here, the top button) is tapped, the second display unit 25-2 (here, the top button) is selected (in FIG. 28, the selected state is changed). (It is represented by a solid line frame and hatching.) The golf club image 25L-2 at the second time is displayed more emphasized than the golf club images 25L-1, 25L-3, and 25L-4 at other times. The In the example shown in FIG. 28, the emphasized image 25L-2 is displayed with a relatively high contrast (thick solid line), and the unenhanced images 25L-1, 25L-3, and 25L-4 have a relatively low contrast. (Thin dotted line)

  FIG. 29 is an example of a display screen when the third display unit 25-3 (here, the NU button) is tapped. As shown in FIG. 29, when the third display unit 25-3 (here, the NU button) is tapped, the third display unit 25-3 (here, the NU button) is selected (in FIG. 29, the selected state is changed). (Indicated by a solid line frame and hatching.) The golf club image 25L-3 at the third time is displayed more emphasized than the golf club images 25L-1, 25L-2, 25L-4 at other times. The In the example shown in FIG. 29, the emphasized image 25L-3 is displayed with a relatively high contrast (thick solid line), and the unenhanced images 25L-1, 25L-2, and 25L-4 have a relatively low contrast. (Thin dotted line)

  FIG. 30 is an example of a display screen when the fourth display unit 25-4 (here, the HWB button) is tapped. When the fourth display unit 25-4 (here, the HWB button) is tapped as shown in FIG. 30, the fourth display unit 25-4 (here, the HWB button) is selected (in FIG. 30, the selected state is changed). (Indicated by a solid line frame and hatching.) The golf club image 25L-4 at the fourth time is displayed more emphasized than the golf club images 25L-1, 25L-2, 25L-3 at other times. The In the example shown in FIG. 30, the emphasized image 25L-4 is displayed with a relatively high contrast (thick solid line), and the unenhanced images 25L-1, 25L-2, and 25L-3 have a relatively low contrast. (Thin dotted line)

  As shown in FIG. 31, when the score display section 25-5 (score button) is tapped, the V-zone item display screen is switched to a V-zone item diagnosis screen as shown in FIG.

  As shown in FIG. 32, the V-zone item diagnosis screen includes various images representing the V-zone item diagnosis information. However, the diagnostic information illustrated in FIG. 32 is merely an example, and does not necessarily correspond to the arrangement pattern (“ABCD”) illustrated in FIG. 26 and the like.

  The diagnosis screen shown in FIG. 32 includes information indicating the type of swing (diagnosis result) and one or more advices (recommended lessons) effective for improving (overcoming) the weaknesses of the type. . The lesson method is expressed by a combination of text and still images, for example. FIG. 32 shows an example in which the lesson method (advice) is expressed (informed or provided) by a combination of text and still images. Instead of the combination, text or still images such as icons, moving images, and voices are used. An expression mode other than the above may be used, or a combination of one or three or more expression modes may be used.

1-6-4. V Zone Item Display Processing Flow The V zone item display processing flow will be described in detail below.

  In the present embodiment, the user 2 selects one of the check boxes on the selection screen shown in FIG. 7 to select swing analysis data related to one swing and then clicks OK at the bottom of the selection screen. When the button is pressed (tapped with a fingertip) and a V zone item display start operation is further performed, the display processing of the V zone item can be started by the swing analyzer 20.

  FIG. 33 is a flowchart illustrating an example of a procedure of a V zone item display process (an example of a presentation method) by the processing unit 21 (an example of a presentation unit) of the swing analysis apparatus 20.

  The flow of FIG. 33 shows the display processing related to the display screen shown in FIGS. 25 to 30, and the display processing related to the diagnostic screen (FIG. 32) is omitted. The following processing is executed mainly by the display processing unit 214 (an example of a presentation unit) of the processing unit 21 in cooperation with the display unit 25 (an example of a presentation unit). Will be described as the processing unit 21. Further, a program (an example of a presentation program) for the processing unit 21 to execute the display process is stored in the storage unit 24 described above. This program may be stored in advance in a nonvolatile recording medium (computer-readable recording medium), or may be received by the processing unit 21 from a server (not shown) or the server device 30 via a network. May be stored in the storage unit 24.

  First, the processing unit 21 determines whether or not there is a display start operation for the V zone item. If there is a display start operation (S91Y), the processing unit 21 proceeds to the next process (S93), and otherwise (S91N). ) Wait.

Next, the processing unit 21 recognizes the timing arrangement pattern and the area arrangement pattern included in the swing analysis data selected by the user 2 (S93). Here, it is assumed that the timing arrangement pattern is “t _HWB −t _top −t _vmax −t _HWD ” and the area arrangement pattern is “ _ABCD ”.

Next, the processing unit 21 displays a display screen that reflects the timing arrangement pattern “t _HWB −t _top −t _vmax −t _HWD ” and the area arrangement pattern “ _ABCD ”. Start (S95). Here, the timing arrangement pattern is “t _HWB −t _top −t
_vmax− t _HWD ”, the function of the HWB button is given to the first display unit 25-1 of the display screen, and the function of the top button is given to the second display unit 25-2. The display unit 25-3 is provided with the NU button function, and the fourth display unit 25-4 is provided with the HWD button function. Further, golf club images at four times are also arranged on the display screen.

  Next, the processing unit 21 determines whether or not the first display unit 25-1 (here, the HWB button) has been tapped during display of the display screen (S97), and the second display unit 25. -2 (here, the top button) determination process (S101), the third display unit 25-3 (here, the NU button) determination process (S105), A determination process (S109) as to whether the fourth display unit 25-4 (here, the HWD button) has been tapped and a determination process (S113) as to whether a display end operation for the V zone item has been performed are executed. As long as the display operation of the V zone item is not performed (S113N), these determination processes (S97, S101, S105, S109, S113) are repeated.

  Thereafter, when the first display unit 25-1 (here, the HWB button) is tapped (S97Y), the processing unit 21 highlights the image of the golf club at the first time (here, the halfway back time). Is started (S99).

  When the second display unit 25-2 (here, the top button) is tapped (S101Y), the processing unit 21 starts highlighting the golf club image at the second time (here, the top time). (S103).

  When the third display unit 25-3 (here, the NU button) is tapped (S105Y), the processing unit 21 highlights the golf club image at the third time (here, the grip deceleration start time). Is started (S107).

  When the fourth display unit 25-4 (here, the HWD button) is tapped (S109Y), the processing unit 21 displays the image of the golf club at the fourth time (here, the halfway down time). Start highlighting.

  When there is a display end operation for the V zone item (S113Y), the processing unit 21 ends the flow at that time.

  In the flowchart of FIG. 33, the order of each process may be appropriately changed within a possible range, a part of the process may be deleted or changed, and another process may be added.

1-7. As described above, the swing analysis apparatus 20 according to the present embodiment includes the plurality of areas A, B, C, D, and E to which the identification codes A, B, C, D, and E are assigned in advance. The identification code indicating the region to which the head of the golf club 3 belongs at each of the swing times t _HWB , t _top , t _vmax and t _HWD is presented to the user 2 in time series.

According to the swing analysis apparatus 20 of the present embodiment, the identification code of the region to which the head belongs at each of a plurality of times t _HWB , t _top , t _vmax , t _HWD is time-series (that is, a plurality of times t _HWB , are presented in the order of arrival of t _top , t _vmax , t _HWD ), so that the user 2 can recognize his / her type of swing as an array pattern of identification codes. Specifically, the user 2 has the arrangement patterns “AAAA”, “AAAA”, “AAAA”,. It is possible to objectively and concisely recognize the type of swing as any of “EE”.

  Therefore, the user 2 compares the arrangement pattern for the swing when the condition is good and the arrangement pattern for the swing when the condition is bad, and the cause of the condition that is not good is determined from the difference between the arrangement patterns of the two. You can know what time it is inside. For example, when the arrangement pattern for the swing when the condition is good is “C-CC-C”, and the arrangement pattern for the swing when the condition is not good is “C-C-B-C” Therefore, it can be estimated that the cause of the poor condition is the posture of the golf club 3 at the fourth time.

2. The present invention is not limited to this embodiment, and various modifications can be made within the scope of the present invention.

2-1. Other Presentation Modes Note that the processing unit 21 in the above embodiment uses an identification code for each area (separate from A, B, C, D, and E) in order to present the arrangement pattern of the areas to the user 2. Although arranged in the direction, the identification codes of individual areas (aside from A, B, C, D, and E) may be arranged in the time direction. That is, in order to present the array pattern “ABCD” to the user 2, the processing unit 21 in the above embodiment includes an image indicating the code “A”, an image indicating the code “B”, and a code “ The image indicating “C” and the image indicating “D” may be sequentially displayed on the screen, the sound indicating “A”, the sound indicating “B”, the sound indicating “C”, and the code A sound indicating “D” may be output sequentially. For example, the sound output processing unit 215 and the sound output unit 26 of the processing unit 21 cooperate to output the sound.

  Further, the processing unit 21 in the above embodiment uses identification codes such as “A”, “B”, “C”, “D”, “E”, etc. as the identification data of the region. Identification numbers such as “2”, “3”, “4”, “5” may be used, or “upper V zone”, “Hoganplane side in V zone”, “center of V zone”, “ Identification words such as “V-axis shaft plane side” and “V-zone lower side” may be used, “Standard range upper side”, “Standard range upper side”, “Standard range lower side”, An identification word such as “below the standard range” may be used.

2-2. Other Notification Modes The processing unit 21 in the above embodiment performs one or more notifications to the user 2 mainly on the screen, but may be performed in other modes. For example, at least one of an image, light, sound, vibration, an image change pattern, a light change pattern, a sound change pattern, and a vibration change pattern can be used as the notification mode.

2-3. Other Input Mode The processing unit 21 in the above embodiment performs one or more information inputs from the user 2 mainly by finger contact (tap operation on the touch panel, button operation). Various modes can be used as the mode of input. As an information input mode, for example, at least one of input by finger contact, input by voice, and input by gesture can be used.

2-4. Modification of V Zone In the above embodiment, in order to define the areas A, B, C, D and E to which the head belongs, the concept of V zone (area sandwiched between the shaft plane and the Hogan plane) is introduced. This V zone is a region sandwiched between a first virtual plane along the longitudinal direction of the golf club 3 and a second virtual plane passing near the shoulder of the user 2 (see FIG. 34). The first virtual plane is, for example, a so-called shaft plane that is specified by a first axis along the target direction of the hit ball and a second axis along the longitudinal direction of the golf club 3 before the start of the swing. The second plane is, for example, a so-called Hogan plane that includes the first axis and forms a predetermined angle with respect to the first virtual plane. However, the second virtual surface may be a virtual surface parallel to the first virtual surface (including both a virtual surface parallel to the first virtual surface and a virtual surface along the first virtual surface). Incidentally, the parallel virtual plane is sometimes called a “shoulder plane” (see FIG. 35). In the above embodiment, the second virtual surface may be calculated based on both the first virtual surface and the body information of the user 2, or a surface having a predetermined relationship with the first virtual surface is the second virtual surface. It may be a surface.

  Further, the method of defining the first virtual surface and the second virtual surface is not limited to these, and for example, a virtual surface as shown in FIG. 36 may be used. The two virtual planes shown in FIG. 36 are virtual planes set based on the posture of the shaft before the start of the swing, and the first virtual plane is a virtual plane passing near the elbow of the user 2, The virtual plane is a virtual plane passing near the user's knee. Further, the first virtual surface and the second virtual surface are not parallel, and, for example, cross each other on an extended straight line in the grip end direction of the golf club.

2-5. Modification of swing analysis processing A plurality of sensor units 10 are mounted on a part such as the golf club 3 or the arm or shoulder of the user 2, and the swing analysis unit 211 uses the measurement data of each of the plurality of sensor units 10, Swing analysis processing may be performed.

  In the above embodiment, the swing analysis unit 211 calculates the third line segment 53 and the Hogan plane HP, which are the third axes, using the body information of the user 2, but the second axis that is the second axis. The line segment 52 and the shaft plane SP rotated by a predetermined first angle β (for example, 30 °) around the X axis may be used as the third line segment 53 and the Hogan plane HP.

  In the above embodiment, the swing analysis unit 211 detects the impact using the square root of the sum of squares as shown in Expression (2) as the combined value of the triaxial angular velocities measured by the sensor unit. As the combined value of the axial angular velocities, for example, the sum of squares of the three axial angular velocities, the sum of the three axial angular velocities or the average value thereof, and the product of the three axial angular velocities may be used. Instead of the combined value of the three-axis angular velocities, a combined value of the three-axis accelerations such as a sum of squares of the three-axis accelerations or a square root thereof, a sum of the three-axis accelerations or an average value thereof, and a product of the three-axis accelerations may be used. .

2-6. In the above-described embodiment, as a display destination of one or a plurality of images, for example, a list-type display unit (an example of an arm-mounted display device) as shown in FIG. It is also possible to use a head-mounted display unit (referred to as HMD, an example of a head-mounted display device) as shown in FIG.

  The head mounted display is a display that is attached to the head of the user 2 and displays an image with respect to one or both eyes of the user 2. The user 2 wearing the head-mounted display on the head can check various images without changing the line of sight from the direction of the head, ball, or target of the golf club 3.

  As shown in FIG. 38, the HMD 500 has a spectacle body 501 that is worn on the head of the user 2. The glasses main body 501 is provided with a display unit 502. The display unit 502 superimposes the virtual image of the image display unit 503 on the real image of the external world viewed from the user 2 by integrating the light beam emitted from the image display unit 503 with the light beam directed from the outside world toward the eyes of the user 2.

The display unit 502 includes an image display unit 503 such as an LCD (liquid crystal display), a first beam splitter 504, a second beam splitter 505, a first concave reflection mirror 506, and a second concave reflection mirror 507, for example. A shutter 508 and a convex lens 509 are provided.

  The first beam splitter 504 is disposed in front of the left eye of the user 2 and partially transmits and partially reflects light emitted from the image display unit 503.

  The second beam splitter 505 is disposed in front of the right eye of the user 2 and partially transmits and partially reflects the partially transmitted light from the first beam splitter 504.

  The first concave reflecting mirror 506 is disposed in front of the first beam splitter 504, partially reflects the partially reflected light of the first beam splitter 504, transmits the first beam splitter 504, and guides it to the left eye of the user 2. .

  The second concave reflection mirror 507 is disposed in front of the second beam splitter 505, partially reflects the partially reflected light of the second beam splitter 505, transmits the second beam splitter 505, and guides it to the right eye of the user 2. .

  The convex lens 509 guides the partially transmitted light of the second beam splitter 505 to the outside of the HMD 500 when the shutter 508 is opened.

  According to the HMD 500 described above, the user 2 can confirm necessary information without holding the swing analysis device 20 by hand.

2-7. Others In the above embodiment, part or all of the functions of the sensor unit 10 may be mounted on the swing analysis device 20 or the server device 30 side. Further, some or all of the functions of the swing analysis device 20 may be mounted on the sensor unit 10 or the server device 30 side. Also, some or all of the functions of the server device 30 may be mounted on the swing analysis device 20 or the sensor unit 10 side.

  In the above embodiment, the acceleration sensor 12 and the angular velocity sensor 14 are integrated in the sensor unit 10, but the acceleration sensor 12 and the angular velocity sensor 14 may not be integrated. Alternatively, the acceleration sensor 12 and the angular velocity sensor 14 may be directly attached to the golf club 3 or the user 2 without being built in the sensor unit 10. Further, in the above embodiment, the sensor unit 10 and the swing analysis device 20 are separate bodies, but they may be integrated so as to be mountable to the golf club 3 or the user 2. The sensor unit 10 may include some components of the swing analysis device 20 together with the inertial sensor (for example, the acceleration sensor 12 or the angular velocity sensor 14).

The inertial sensor may be any sensor that can measure an inertia amount such as acceleration and angular velocity, and may be an inertial measurement unit (IMU) that can measure acceleration and angular velocity, for example. Further, the inertial sensor may be attached to, for example, an exercise tool or a user's site, and may be detachable from the exercise tool or the user, or may be fixed to the exercise tool such as being built in the exercise tool. It may have been removed and cannot be removed.
In the above embodiment, a swing analysis system (server device) that analyzes a golf swing is taken as an example. However, the present invention is based on a swing analysis system (server) that analyzes swings in various exercises such as tennis and baseball. Device).

The above-described embodiments and modifications are merely examples, and the present invention is not limited to these. For example, it is possible to appropriately combine each embodiment and each modification.

  The present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations that have the same functions, methods, and results, or configurations that have the same objects and effects). In addition, the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced. In addition, the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object. Further, the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

 DESCRIPTION OF SYMBOLS 1 ... Swing analysis system, 2 ... User, 3 ... Golf club, 4 ... Golf ball, 10 ... Sensor unit, 12 ... Acceleration sensor, 14 ... Angular velocity sensor, 16 ... Signal processing part, 18 ... Communication part, 20 ... Swing analysis Device, 21 ... processing unit, 22 ... communication unit, 23 ... operation unit, 24 ... storage unit, 25 ... display unit, 26 ... sound output unit, 27 ... communication unit, 30 ... server device, 31 ... processing unit, 32 ... Communication unit 34 ... storage unit 40 40 network 51 first line segment 52 second line segment 53 third line segment 61 golf club head position 62 golf club grip end Position, 63 ... Predetermined position on a line segment connecting both shoulders of the user, 70 ... Target line (target direction of the hit ball), 71 ... Plane perpendicular to the target line, 72 ... Tangent line at the hitting point, 73 ... Face , 74: face surface, 75: hitting point, 76: curve representing the trajectory of the head of the golf club, 101 ... processing unit, 110 ... storage unit, 210 ... data acquisition unit, 211 ... swing analysis unit, 212 ... image data generation unit, 213 ... storage processing unit, 214 ... display processing unit, 215 ... sound output processing unit, 240 ... swing analysis program, 242 ... golf club information, 244 ... body information, 246 ... sensor mounting position information, 248 ... swing analysis data, 310 ... data acquisition unit, 312 ... storage processing unit, 341 ... swing analysis data list, SAB ... boundary surface between region A and region B, SBC ... boundary surface between region B and region C, SCD ... Boundary surface between region C and region D, SDE ... Boundary surface between region D and region E, SP ... Shaft plane, HP ... Hogan plane, H1, H2 ... Apex of chromatography cancer plane, H3 ... H1 and the midpoint of H2, S1, S2 ... vertex of the shaft plane, the midpoint of S3 ... S1 and S2, U1, U2 ... common vertex shaft plane and Hogan plane

Claims (29)

Using the output of the inertial sensor,
Including a presentation unit that presents the identification data indicating the region to which the striking unit of the exercise tool belonged to each of the plurality of timings during the swing among the plurality of regions to which the identification data is allocated in advance,
Electronics. In claim 1,
The presenting unit
Presenting the identification data to the user in chronological order;
Electronics. In claim 1 or 2,
The plurality of regions are:
Set based on a first virtual plane indicating the basic posture of the exercise tool,
Electronics. In any one of Claims 1 thru | or 3,
The first virtual surface is
A surface specified based on a first axis along the target direction of the hit ball and a second axis along the longitudinal direction of the exercise tool before the start of the backswing.
Electronics. In claim 4,
The plurality of regions are:
The first virtual surface;
A second virtual plane passing near the user's shoulder;
Set based on the
Electronics. In claim 5,
The second virtual surface is
A plane that includes the first axis and forms a predetermined angle with the first virtual plane;
Electronics. In claim 5,
The second virtual surface is
A plane parallel to the first virtual plane,
Electronics. In any one of Claims 5 thru | or 7,
The presenting unit
Presenting the first virtual surface and the second virtual surface together with the identification data to the user;
Electronics. In any one of Claims 1 thru | or 8,
The presenting unit
Presenting the swing trajectory to the user together with the identification data;
Electronics. In any one of Claims 1 thru | or 9,
The plurality of timings include
Timing when the longitudinal direction of the exercise tool is along a horizontal plane during a backswing;
Top timing,
Timing when the gripping part of the exercise tool begins to decelerate during the downswing,
And the timing when the longitudinal direction of the exercise tool is along the horizontal plane during the downswing,
At least two of
Electronics. In any one of Claims 1 thru | or 10,
In the inertial sensor,
Including at least one of an acceleration sensor and an angular velocity sensor,
Electronics. In any one of Claims 1 thru | or 11,
The presenting unit
A level is presented based on the presented identification data.
Electronics. In any one of Claims 1 to 12,
The presenting unit
Presenting diagnostic information based on the presented identification data;
Electronics. In claim 13,
The presenting unit
Based on the diagnostic information, information on a swing practice method is presented.
Electronics. An electronic device according to any one of claims 1 to 14,
The inertial sensor;
Including the system. An electronic device according to any one of claims 1 to 14,
A head-mounted display device that displays the identification data;
Including the system. An electronic device according to any one of claims 1 to 14,
An arm-mounted display device for displaying the identification data;
Including the system. Using the output of the inertial sensor,
Including the step of presenting to the user the identification data indicating the region to which the striking part of the exercise tool belonged at each of a plurality of timings during the swing among the plurality of regions to which the identification data is allocated in advance.
Presentation method. In claim 18,
In the presenting step,
Presenting the identification data to the user in chronological order;
Presentation method. In claim 18 or 19,
The plurality of regions are:
Set based on a first virtual plane indicating the basic posture of the exercise tool,
Presentation method. In claim 20,
The first virtual surface is
A surface specified based on a first axis along the target direction of the hit ball and a second axis along the longitudinal direction of the exercise tool before the start of the backswing.
Presentation method. In claim 21,
The plurality of regions are:
The first virtual surface;
A second virtual plane passing near the user's shoulder;
Set based on the
Presentation method. In claim 22,
The second virtual surface is
A plane that includes the first axis and forms a predetermined angle with the first virtual plane;
Presentation method. In claim 22,
The second virtual surface is
A plane parallel to the first virtual plane,
Presentation method. 25. In any one of claims 22 to 24,
The presenting step includes
Presenting the first virtual surface and the second virtual surface together with the identification data to the user;
Presentation method. In any one of Claims 18 thru | or 25,
The presenting step includes
Presenting the swing trajectory to the user together with the identification data;
Presentation method. In any one of claims 18 to 26,
The plurality of timings include
Timing when the longitudinal direction of the exercise tool is along a horizontal plane during a backswing;
Top timing,
Timing when the gripping part of the exercise tool begins to decelerate during the downswing,
And the timing when the longitudinal direction of the exercise tool is along the horizontal plane during the downswing,
At least two of
Presentation method. Using the output of the inertial sensor,
Let the computer execute the step of presenting the identification data indicating the area to which the striking part of the exercise tool belonged at each of a plurality of timings during the swing among a plurality of areas to which identification data is allocated in advance. ,
Presentation program. Using the output of the inertial sensor,
Let the computer execute the step of presenting the identification data indicating the area to which the striking part of the exercise tool belonged at each of a plurality of timings during the swing among a plurality of areas to which identification data is allocated in advance. Recorded the presentation program,
recoding media.

Images