JP2017124079A - Display method, swing analyzing device, swing analyzing system, swing analyzing program and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an analysis result display method that can objectively regard how a sequence of swing motions transitions.SOLUTION: The display method displays objects 31, 32, 33, 34, 35 related to exercise equipment in each position of the exercise equipment at a plurality of timings during a swing so as to overlap on an acquired swing locus 30, based on output of an inertial sensor for measuring a swing of exercise equipment.SELECTED DRAWING: Figure 16

Description

  The present invention relates to a display method, a swing analysis device, a swing analysis system, a swing analysis program, and a recording medium.

  2. Description of the Related Art Conventionally, in sports such as golf, tennis, and baseball, means for improving the competitiveness by analyzing a locus of a swing of a golf club, a racket, a bat or the like as an exercise equipment and improving the locus is known. As an example of such means, for example, Patent Document 1 discloses a technique of photographing a swing with a video camera and performing analysis using the photographed moving image. For example, Patent Document 2 discloses a technique for analyzing a swing based on a multi-motion image obtained by superimposing and synthesizing a series of images of a swing that are continuously captured. For example, Patent Document 3 discloses a technique for performing swing analysis by detecting impact timing by hitting a ball during swing using a motion sensor.

JP-A-2015-123206 JP 2014-64125 A JP 2014-100341 A

  However, in the techniques described in Patent Document 1 and Patent Document 2, an apparatus that captures (captures) moving images and continuous images (multi-motion images) becomes large, and it is difficult for the user to easily perform a swing analysis. There is a problem. On the other hand, in the technique described in Patent Document 3, swing analysis can be easily performed by using a motion sensor mounted on an exercise device (golf club). There was a problem that it was difficult to objectively recognize whether the transition occurred.

  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 forms or application examples.

  Application Example 1 A display method according to this application example is based on the output of an inertial sensor that measures a swing of an exercise equipment, and the obtained swing trajectory includes each of the exercise equipment at a plurality of timings during the swing. The objects related to the exercise equipment at the position are displayed in an overlapping manner.

  According to the display method of this application example, by displaying the swing locus and the object related to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing, a series of swing operations are performed. It is possible to objectively recognize how the transition has occurred. In addition, since analysis data such as a swing trajectory is generated and displayed based on the output of the inertial sensor, it is not necessary to use a large-scale imaging device or the like, and the user can easily perform the swing analysis.

  Application Example 2 In the display method according to the application example described above, it is preferable that any one of the objects is specified and the analysis information of the timing related to the specified object is displayed.

  According to this application example, by specifying an object for which analysis information is determined to be necessary from among the displayed objects, timing analysis information related to the specified object is displayed. Can be obtained. Moreover, since necessary analysis information can be obtained in a concentrated manner, analysis efficiency can be improved.

  Application Example 3 In the display method described in the application example, it is preferable that the designation is performed by instructing a display unit on which the object is displayed.

  According to this application example, the object is specified by touching the display unit (screen touch) or the like on the display unit on which the object is displayed. Therefore, the object can be directly specified, and the specification can be performed reliably and easily.

  Application Example 4 In the display method described in the application example, it is preferable that the specified object is highlighted.

  According to this application example, since the designated object is highlighted, it is possible to more easily recognize and recognize the designated object.

  Application Example 5 In the display method described in the application example, it is preferable that the analysis information is posture information of the exercise equipment.

  According to this application example, the posture information of the exercise equipment can be obtained as the analysis information, the posture of the exercise equipment at a specific timing can be objectively and easily determined, and the analysis accuracy and analysis efficiency can be improved. Can do.

  Application Example 6 In the display method according to the application example described above, it is preferable that the posture information displays the area to which the position of the exercise equipment belongs in relation to a plurality of areas to which identification data is allocated in advance. .

  According to this application example, which region the position of the exercise device belongs to can be verified by the identification data. As a result, it is possible to facilitate the quality determination of the position of the exercise equipment at each timing.

  Application Example 7 In the display method described in the application example, it is preferable that the area is set based on a relationship with at least one virtual surface.

  According to this application example, based on the relationship between the virtual plane and the identification data relating to the position of the exercise equipment at a desired timing during the swing, the swing characteristics can be leveled and specified.

  Application Example 8 In the display method according to the application example described above, it is preferable that the analysis information is posture information of a hitting portion of the exercise equipment.

  According to this application example, the posture information of the striking part of the exercise equipment can be obtained as analysis information, and the posture of the striking part of the sports equipment at a specific timing can be objectively and easily determined, and the analysis accuracy And analysis efficiency can be improved.

  Application Example 9 In the display method according to the application example, it is preferable that the posture information is a direction of a hitting surface of the hitting unit.

  According to this application example, it is possible to obtain posture information of the direction of the striking part of the exercise equipment as analysis information, and to objectively and easily determine the posture related to the direction of the striking part of the sports equipment at a specific timing. It is possible to improve analysis accuracy and analysis efficiency.

  Application Example 10 In the display method described in the application example, it is preferable that the analysis information is a rotation angle of the exercise equipment.

  According to this application example, the rotation angle of the exercise equipment can be obtained as analysis information, the rotation angle of the exercise equipment at a specific timing can be objectively and easily determined, and analysis accuracy and analysis efficiency are improved. be able to.

  Application Example 11 In the display method according to the application example described above, the swing is a swing of a golf club, and the plurality of timings are at least two of a half way back, a top, a natural uncock, a half way down, and an impact. Preferably including one.

  According to this application example, it is possible to display at least two of the important timings for golf club swing, halfway back, top, natural uncock, halfway down, and impact timing. Efficiency can be increased.

  Application Example 12 The swing analysis apparatus according to this application example generates analysis data related to the swing using an output of an inertial sensor that measures a swing of the exercise equipment, and generates a swing locus and analysis information based on the analysis data. An object related to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing on the swing locus; and a processing section for outputting, and a display section for displaying the swing locus and the analysis information. Are displayed on the display unit.

  According to the swing analysis device of this application example, the swing trajectory and the object related to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing are displayed on the display unit in an overlapping manner. It is possible to objectively recognize how the series of operations has transitioned. Further, analysis data such as a swing trajectory is generated based on the output of the inertial sensor. By using the inertial sensor in this way, it is not necessary to use a large-scale imaging device or the like, and the user can easily perform a swing analysis.

  Application Example 13 In the swing analysis device according to the application example described above, it is preferable that the swing analysis apparatus includes an operation unit that specifies any one of the objects, and displays the analysis information related to the specified object.

  According to this application example, it is possible to display the analysis information of the timing related to the specified object by specifying the object for which the analysis information is determined to be necessary by using the operation unit among the displayed objects. Analysis information can be obtained efficiently. Moreover, since necessary analysis information can be obtained collectively, analysis efficiency can be improved.

  Application Example 14 In the swing analysis apparatus according to the application example described above, it is preferable that the operation unit is provided in the display unit, and the designation is performed on the display unit.

  According to this application example, the object can be specified by touching the display unit (screen touch) or the like with respect to the operation unit provided in the display unit. Therefore, the object can be directly specified, and the specification can be performed reliably and easily.

  Application Example 15 In the swing analysis apparatus according to the application example described above, it is preferable that the designated object is highlighted.

  According to this application example, since the designated object is highlighted, it is possible to more easily recognize and recognize the designated object.

  Application Example 16 In the swing analysis apparatus according to the application example described above, it is preferable that the analysis information is posture information of the exercise equipment.

  According to this application example, the posture information of the exercise equipment can be obtained as the analysis information, the posture of the exercise equipment at a specific timing can be objectively and easily determined, and the analysis accuracy and analysis efficiency can be improved. Can do.

  [Application Example 17] In the swing analysis device according to the application example, the posture information includes a display of the region to which the position of the exercise device belongs with respect to a plurality of regions to which identification data is allocated in advance. Is preferred.

  According to this application example, which region the position of the exercise device belongs to can be verified by the identification data. As a result, it is possible to facilitate the quality determination of the position of the exercise equipment at each timing.

  Application Example 18 In the swing analysis device according to the application example described above, it is preferable that the region is set based on a relationship with at least one virtual plane.

  According to this application example, based on the relationship between the virtual plane and the identification data relating to the position of the exercise equipment at a desired timing during the swing, the swing characteristics can be leveled and specified.

  Application Example 19 In the swing analysis apparatus according to the application example described above, it is preferable that the analysis information is posture information of a hitting portion of the exercise equipment.

  According to this application example, the posture information of the striking part of the exercise equipment can be obtained as analysis information, and the posture of the striking part of the sports equipment at a specific timing can be objectively and easily determined, and the analysis accuracy And analysis efficiency can be improved.

  Application Example 20 In the swing analysis device according to the application example described above, it is preferable that the posture information is a direction of a hitting surface of the hitting unit.

  According to this application example, the posture information of the direction of the striking part of the exercise equipment can be obtained as analysis information, and the posture related to the direction of the striking part of the sports equipment at a specific timing can be objectively and easily determined. It is possible to improve analysis accuracy and analysis efficiency.

  Application Example 21 In the swing analysis device according to the application example described above, it is preferable that the analysis information is a rotation angle of the exercise equipment.

  According to this application example, the rotation angle of the exercise equipment can be obtained as analysis information, the rotation angle of the exercise equipment at a specific timing can be objectively and easily determined, and analysis accuracy and analysis efficiency are improved. be able to.

  Application Example 22 In the swing analyzing apparatus according to the application example described above, the swing is a golf club swing, and the plurality of timings are at least halfway back, top, natural uncock, halfway down, and impact. It is preferable that two are included.

  According to this application example, it is possible to display at least two of the important timings for golf club swing, halfway back, top, natural uncock, halfway down, and impact timing. Efficiency can be increased.

  Application Example 23 A swing analysis system according to this application example includes the swing analysis device according to any one of the application examples described above and an inertial sensor.

  According to the swing analysis system of this application example, analysis data such as a swing locus is generated based on the output of a small inertia sensor. Then, based on the analysis data, a swing trajectory and an object related to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing are displayed on the display unit so as to be overlapped. This makes it possible to objectively recognize how the operation of has changed. In addition, by using a small inertia sensor, the swing analyzer can be reduced in size and weight. Therefore, it is not necessary to use a large-scale photographing apparatus and the user can easily perform a swing analysis.

  Application Example 24 A swing analysis program according to this application example generates a swing locus and analysis information based on an output of an inertial sensor that measures a swing of the exercise equipment, and outputs the swing locus and the analysis information. And causing the computer to execute a step of superimposing and displaying an object related to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing on the swing locus.

  According to the swing analysis program of this application example, analysis data such as a swing trajectory is generated based on the output of the inertial sensor, and based on the analysis data, each of the swing trajectory and the exercise equipment at a plurality of timings during the swing The computer is executed so that the object related to the exercise apparatus is displayed in an overlapping manner. As a result, the user can objectively recognize how the series of swing movements has changed.

  Application Example 25 A recording medium according to this application example generates a swing locus and analysis information based on the output of an inertial sensor that measures the swing of the exercise equipment, and outputs the swing locus and the analysis information. A program for causing a computer to execute a process and a step of superimposing and displaying an object relating to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing on the swing locus is recorded.

  According to the recording medium of this application example, by causing the computer to execute based on the recorded program, analysis data such as a swing locus is generated based on the output of the inertial sensor, and based on the analysis data, the swing data is generated. The locus and the object related to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing are displayed in an overlapping manner. As a result, the user can objectively recognize how the series of swing movements has changed.

Explanatory drawing of the outline | summary of a swing analysis system. The figure which shows an example of the mounting position and direction of a sensor unit. Explanatory drawing about swing operation | movement. The figure which shows the structural example of a swing analysis system. 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 relationship between a shaft plane and Hogan plane, and a some area | region. The flowchart which shows the operation | movement procedure (display method of an analysis result) of a swing analysis system. The figure which shows the example 1 of a display of swing information. The figure which shows transition of the shaft rotating shaft of the example of a display of the analysis information of a swing. The figure which shows the example 2 of a display of swing information. The figure which shows the example 3 of a display of swing information. The figure which shows the application example 1 which concerns on the display of swing information. The figure which shows the application example 2 which concerns on the display of swing information. The perspective view which shows the head mounted display of an example of a motion analysis display apparatus. The perspective view which shows the movement analysis display apparatus of an arm mounting | wearing type of an example of a wearable type | mold.

  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.

Swing analysis (motion analysis) system 1-1. Outline of Swing Analysis (Motion Analysis) System FIG. 1 is a diagram for explaining an outline of a swing analysis system of the present embodiment. FIG. 2 is a diagram illustrating an example of the mounting position and orientation of the sensor unit. FIG. 3 is an explanatory diagram of a series of swing operations. FIG. 4 is a diagram illustrating a configuration example of the swing analysis system.

  As shown in FIG. 1, the swing analysis system 1 of this embodiment includes a sensor unit 10 (an example of an inertial sensor) and a motion analysis display device 20 as a swing analysis device. In the swing analysis system 1, a user (subject) 2 analyzes a swing of a golf club 3 (hereinafter also referred to as a golf swing) performed to hit a golf ball 4 as a target. In this embodiment, a swing analysis device that analyzes a golf swing will be described as an example. The swing analysis device of the present invention is a swing such as a racket for tennis, badminton, table tennis, or a bat used for baseball or softball. The present invention can be applied to swing analysis of various exercise equipment used for the exercise.

  The sensor unit 10 as a measuring unit includes an acceleration sensor (acceleration sensor 12 and angular velocity sensor 14 shown in FIG. 4) provided with accelerations generated in the directions of the three axes, and angular velocities generated around the three axes. Can be measured, and is attached to the golf club 3 (an example of an exercise device) in this embodiment.

  In the present embodiment, as shown in FIG. 2, the sensor unit 10 as a measurement unit has one of three detection axes (x axis, y axis, z axis), for example, the y axis in the longitudinal direction of the shaft. In addition, it is attached to a part of the shaft of the golf club 3. Desirably, the sensor unit 10 is attached at a position close to a grip 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 3a of the golf club 3 and includes a grip. However, the sensor unit 10 may be attached to a part of the user 2 who is a subject (for example, a hand or a glove), or may be attached to an accessory such as a wristwatch.

  In the present embodiment, a swing analysis (motion analysis) taking a swing of the golf club 3 as an example is illustrated. In the golf swing, for example, a series of swing operations as shown in FIG. 3 are performed. Specifically, as shown in FIG. 3, after starting the swing (back swing) from the position of the address in a stationary state, the golf club 3 shaft is horizontal during the back swing. It includes an operation that reaches the impact of hitting the golf ball 4 through each state of a top that switches to a downswing and a halfway down in which the shaft of the golf club 3 is horizontal during the downswing. After the impact, a follow-through (not shown) is reached, and a series of swing operations are completed.

1-2. Configuration of Swing Analysis (Motion Analysis) System FIG. 4 is a diagram showing a configuration example (configuration example of the sensor unit 10 and the motion analysis display device 20) of the swing analysis (motion analysis) system 1 of the present embodiment. As shown in FIG. 4, in the present embodiment, the sensor unit 10 includes an acceleration sensor 12 and an angular velocity sensor 14 as inertial sensors, a signal processing unit 16, and a communication unit 18.

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

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

  The signal processing unit 16 receives acceleration data and angular velocity data (measurement data) from the acceleration sensor 12 and the angular velocity sensor 14, respectively, attaches time information to the storage means (not shown), stores the measurement data (attitude or An example of position information) is attached with time information to generate packet data that matches 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 of the sensor unit 10 transmits the packet data received from the signal processing unit 16 to the motion analysis display device 20, receives the control command from the motion analysis display device 20, and transmits the control command to the signal processing unit 16. I do. The signal processing unit 16 performs various processes according to the control command.

  The motion analysis display device 20 is realized by an information terminal (client terminal) such as a smartphone, a personal computer, a head mounted display (HMD) 500 described later, and an arm-mounted analysis display device 600 described later. The motion analysis display device (display device) 20 includes a processing unit 21 (an example of a processing unit), a communication unit 22, an operation unit 23, a storage unit 24, a display unit 25, a sound output unit 26, and a photographing unit 27. Has been.

  The communication unit 22 of the motion analysis display device 20 receives the packet data transmitted from the sensor unit 10 and performs processing to send the packet data to the processing unit 21, processing to send a control command from the processing unit 21 to the sensor unit 10, and the like. .

  The operation unit 23 as an input unit performs a process of acquiring operation data from the user (subject) 2 and sending it 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. In other words, the operation unit 23 functions as an input unit that can input operation data and the like. The user (subject) 2 can input desired operation data from the operation unit 23. The data acquired from the operation unit 23 includes, for example, swing time (date and time), user identification information (user ID), user 2 sex, golf club information 242, user 2 body information 244, and sensor unit 10. The sensor mounting position information 246, which is the position information, can be included.

  In addition, the data acquired from the operation unit 23 can include an index of analysis information that is input by selecting analysis information to be presented (such as image display or voice notification) after the analysis is completed. Accordingly, analysis information to be presented (image display, voice notification, etc.) can be selected and set in advance from the analysis information of the swing, so that the user 2 does not bother at the end of the swing, Usability can be improved, for example, desired presentation (image display, audio notification, etc.) can be automatically performed.

  The storage unit 24 includes, for example, various IC memories such as a ROM (Read Only Memory), a flash ROM, and a RAM (Random Access Memory), a recording medium such as a hard disk and a memory card, and the like.

  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 particular, in the present embodiment, the storage unit 24 stores a swing analysis program (motion analysis program) 240 that is read by the processing unit 21 and executes a swing analysis process. The swing analysis program 240 may be stored in advance in a non-volatile recording medium (an example of a recording medium), or the processing unit 21 receives the swing analysis program 240 from the server via the network and stores it in the storage unit 24. May be.

  The storage unit 24 stores golf club information 242, body information 244, sensor mounting position information 246 that is position information of the sensor unit 10, and the like as information used for the swing analysis process.

  The golf club information 242 is information indicating the specifications of the golf club 3 used by the user 2. For example, the user 2 may operate the operation unit 23 to input the golf club information of the golf club 3 to be used, and the input golf club 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 S100 shown in FIG. 15 to be described later, and the specification information for each model number stored in advance in the storage unit 24 (for example, Of the shaft length, the position of the center of gravity, the lie angle, the face angle, the loft angle, etc.), the specification information of the input model number may be used as the golf club information 242.

  The body information 244 is information indicating the physique of the user 2 (waist height, neck height, arm length, etc.). For example, the user 2 may operate the operation unit 23 to input body information, and the input body information may be the body information 244.

  The sensor mounting position information 246 is information indicating the mounting position of the sensor unit 10 in the golf club 3. For example, in step S100 shown in FIG. 15, the user 2 operates the operation unit 23 to input the distance between the mounting position of the sensor unit 10 and the grip of the golf club 3, and the input distance information is attached to the sensor. The position information 246 may be used. Alternatively, information on the predetermined position may be stored in advance as sensor mounting position information 246, assuming that the sensor unit 10 is mounted at a predetermined position (for example, a distance of 20 cm from the grip).

  The storage unit 24 is used as a work area of the processing unit 21, and temporarily stores data input from 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. As the display unit 25, for example, a CRT, LCD, touch panel display, HMD (head mounted display), or the like may be used. 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.

  In addition, as a function of the operation unit 23 in the display unit 25, designation of timing for analysis display among objects 31 to 35 (see FIGS. 16 and 18 described later) displayed on the display unit 25 is performed. Can be performed by touching (screen touch). As described above, any of the objects 31 to 35 to be analyzed and displayed can be designated by operating the operation unit 23 of the display unit 25, for example, by touching the display unit 25 (screen touch). Therefore, any of the objects 31 to 35 can be directly specified, and the specification can be performed reliably and easily.

  The sound output unit 26 outputs the processing result (analysis information) of the processing unit 21 to present it as a sound such as a sound or a buzzer sound. The sound output unit 26 may be, for example, a speaker or a buzzer.

  The imaging unit 27 includes a light receiving unit (not shown) including an optical lens (imaging optical system) (not shown), a CCD (Charge-Coupled Device), and the like. The photographing unit 27 photographs a subject image (user 2), stores the photographed data in the storage unit 24, sends the photographed data to the image data generating unit 216, and displays the image data generated by the image data generating unit 216. It can be displayed on the unit 25.

  The processing unit 21 performs processing for transmitting a control command to the sensor unit 10 according to various programs, various calculation processing for data received from the sensor unit 10 via the communication unit 22, and various other control processing. The processing unit 21 generates analysis data obtained by analyzing the swing using the swing data received from the sensor unit 10, and based on the analysis data, the swing locus 30 (see FIGS. 16 and 18) and the analysis are generated. Information display data can be formed and output. The processing unit 21 executes a swing analysis program (exercise analysis program) 240 to thereby obtain a data acquisition unit 210, a swing diagnosis unit 211, a swing analysis unit 215, an image data generation unit 216, a storage processing unit 217, and a display processing unit 218. And functions as a sound output processing unit 219.

  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 217.

  The swing diagnosis unit 211 diagnoses the quality of the swing based on the swing index calculated by the swing analysis unit 215. Although a specific method will be described later, the position of the head 3a at the time of halfway back and halfway down is determined based on the shaft plane SP and the Hogan plane HP (V zone) calculated by the swing analysis unit 215, respectively. A method is used in which the determination is made according to which of the plurality of regions A to D belongs. In this display, the motion analysis display device 20 displays a plurality of areas A to D to which identification data is allocated in advance, and the head 3 a of the golf club 3 in a series of swings is displayed with respect to the plurality of areas A to D. It is possible to determine the areas A to D to which the position belongs.

  The swing analysis unit 215 analyzes the swing motion of the user 2 using measurement data output from the sensor unit 10 (measurement data stored in the storage unit 24), 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 this embodiment, the swing analysis unit 215 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 215 may calculate at least one virtual plane as a swing index. For example, the at least one virtual plane includes a shaft plane SP (first virtual plane), which will be described later, and a Hogan plane HP (second virtual plane) that forms a predetermined angle with the shaft plane SP. As this index, “shaft plane SP” and “Hogan plane HP” may be calculated.

  In addition, the swing analysis unit 215 may calculate the position of the head 3a 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 horizontal direction during the backswing, and the swing analysis unit 215 uses the “halfway back” described later as this index. The “position of the head 3a at the time” may be calculated.

  The swing analysis unit 215 may calculate the position of the head 3a 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 215 uses the “halfway down” described later as this index. The “position of the head 3a at the time” may be calculated.

  Further, the swing analysis unit 215 may calculate an index based on the incident angle of the head 3a of the golf club 3 at impact (at the time of hitting) as an index of swing. For example, the swing analysis unit 215 may calculate a “club path (incident angle) ψ” described later as this index.

  In addition, the swing analysis unit 215 may calculate an index based on the inclination of the head 3a of the golf club 3 at impact (at the time of hitting) as an index of swing. For example, the swing analysis unit 215 may calculate “(absolute) face angle φ” and “relative face angle η” described later as this index.

  Further, the swing analysis unit 215 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 215 may calculate a “head speed” described later as the index.

Further, the swing analysis unit 215 uses the longitudinal direction of the shaft as a rotation axis as a swing index, and rotates around the rotation axis 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). An index based on the rotation angle (hereinafter referred to as the major axis rotation) 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 215 may calculate a “shaft shaft rotation angle θ _top at the time of _top ”, which will be described later, as this index.

Further, the swing analysis unit 215 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 215 may calculate a “grip deceleration rate R _V ” described later as this index.

Further, the swing analysis unit 215 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 215 may calculate a “grip deceleration time rate R _T ” described later as this index.

  However, the swing analysis unit 215 may not calculate values of some of these indexes as appropriate, or may calculate values of other indexes.

  The image data generation unit 216 performs processing for generating image data corresponding to the image displayed on the display unit 25. For example, the image data generation unit 216 generates image data corresponding to various screens based on various types of information received by the data acquisition unit 210.

  The storage processing unit 217 receives time information and measurement data from the data acquisition unit 210, and performs a process of associating them with each other and storing them in the storage unit 24. In addition, the storage processing unit 217 performs read / write processing of various programs and various data for the storage unit 24. The storage processing unit 217 stores the determination result information generated by the swing analysis unit 215 in the storage unit 24 in addition to the processing of associating the time information received from the data acquisition unit 210 and the measurement data in the storage unit 24. Processing is also performed.

  The display processing unit 218 performs processing for displaying various images (including characters and symbols in addition to images corresponding to the image data generated by the image data generation unit 216) on the display unit 25. For example, after the swing motion of the user 2 is completed, the display processing unit 218 performs the swing trajectory (swing trajectory image) 30 (see FIGS. 16 and 18) of the swing, and the golf club 3 (at a plurality of timings during the swing) ( Objects 31 to 35 (see FIGS. 16 and 18) indicating the respective positions of the head 3a) are displayed on the display unit 25 in an overlapping manner.

  In addition, the display processing unit 218 can display timing analysis information related to the object 32 designated by the user 2 among the displayed objects 31 to 35 on the display unit 25. The analysis information displayed at this time may be superimposed on the same screen as the swing trajectory 30 and the objects 31 to 35, or the screen may be switched at a predetermined timing to display analysis information. In this way, by specifying the object (the object 32 in this example) that the user 2 has determined that analysis information is necessary, the timing analysis information related to the specified object 32 is displayed. Can be obtained. Moreover, since necessary analysis information can be obtained in a concentrated manner, analysis efficiency can be improved.

  At this time, the display processing unit 218 preferably highlights the object 32 designated by the user 2 by changing its color tone (darkening) or changing the size of the object 32 (enlargement). Such highlighting makes it easy to recognize and recognize a specified object (in this example, the object 32 (see FIGS. 16 and 18)).

  When such a display is made on the display unit 25 by the display processing unit 218, the user 2 can objectively recognize how the series of operations of the swing has changed.

  As described above, the display processing unit 218 determines whether the image corresponding to the image data generated by the image data generation unit 216 or the swing analysis unit 215 automatically or according to the index selected by the input operation of the user 2. Characters indicating the result are displayed on the display unit 25. Alternatively, a display unit (not shown) is provided in the sensor unit 10 or another display device (not shown) is provided, and the display processing unit 218 is connected to the sensor unit 10 or other devices via the communication unit 22. The image data may be transmitted to the display device, and various images and characters may be displayed on the display unit of the sensor unit 10 and other display devices.

  The sound output processing unit 219 performs processing for causing the sound output unit 26 to output various sounds (including sound based on sound data, buzzer sound, and the like). Note that the sound output processing unit 219 reads various information stored in the storage unit 24 when a predetermined input operation is performed, and causes the sound output unit 26 to output a sound and sound for swing analysis. Also good. Alternatively, the sound output unit 26 is provided in the sensor unit 10, and the sound output processing unit 219 transmits various sound data and sound data to the sensor unit 10 via the communication unit 22, and the sound output of the sensor unit 10. Various sounds and sounds may be output to the unit.

1-3. Calculation of position and posture of component, detection of each timing of swing operation Hereinafter, detection of position and posture of component (for example, sensor unit 10), timing of each swing operation, calculation of shaft plane and Hogan plane, face Specific methods such as calculation of the angle and club path (incident angle) and calculation of the shaft axis rotation angle will be described with reference to FIGS.

[Calculation of position and orientation of sensor unit 10]
When the user 2 performs the operation of Step S103 (refer to FIG. 15) described later (still operation at the time of address), first, the swing analysis unit 215 continues the change amount of the acceleration data measured by the acceleration sensor 12 for a predetermined time. If the threshold is not exceeded, it is determined that the user 2 is stationary in the address posture. Next, the swing analysis unit 215 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 215 performs bias correction by subtracting the offset amount from the measurement data, and uses the measurement data that has been bias-corrected, and the sensor unit 10 during the swing operation of the user 2 (step S106 in FIG. 15). Calculate position and orientation.

  Specifically, first, the swing analysis unit 215 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. 5 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 position 61 of the head 3a 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 a stationary operation at the time of address (step S103 in FIG. 15), 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. 5, 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 215 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 215 subtracts the distance between the sensor unit 10 and the grip end position 62 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. The distance L _SH between 10 and the head 3a is obtained. Further, the swing analysis unit 215 determines the position of the distance L _SH from the position 61 (origin O) of the head 3a in the direction specified by the shaft inclination angle α (the negative direction of the y-axis of the sensor unit 10). The initial position of.

  Then, the swing analysis unit 215 integrates the subsequent acceleration data and calculates the coordinates of the position from the initial position of the sensor unit 10 in time series.

  In addition, the swing analysis unit 215 calculates the attitude (initial attitude) of the sensor unit 10 when the user 2 is stationary (addressing) 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 stationary operation at the time of address (step S103 in FIG. 15), 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 user 2 address (at the time of stationary). In addition, since the y axis of the sensor unit 10 is on the YZ plane, the swing analysis unit 215 can identify the initial posture of the sensor unit 10 from the tilt angle α of the shaft of the golf club 3.

  Then, the swing analysis unit 215 performs a rotation calculation using the angular velocity data measured by the subsequent angular velocity sensor 14 to calculate the change in posture of the sensor unit 10 from the initial posture in time series. The attitude 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, a quaternion (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 have a bias correction function incorporated therein. It may be. In these cases, bias correction of the measurement data by the swing analysis unit 215 is not necessary.

[Detect swing start, top and impact timing]
The swing analysis unit 215 first detects the timing (impact timing) when the user 2 hits the ball using the measurement data. For example, the swing analysis unit 215 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 215 calculates a value of a combined value n ₀ (t) of angular velocities at each time t using 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 215 obtains the synthesized angular velocity n ₀ (t) by the following equation (2). calculate.

Next, the swing analysis unit 215 converts the combined value n ₀ (t) of the 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 215 sets the combined value n ₀ (t) of the angular velocities to 0 to It is converted into a composite value n (t) normalized to a range of 100.

  Next, the swing analysis unit 215 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 215 calculates the differential (difference) dn (t) of the synthesized value of the angular velocity at time t by the following equation (4).

  FIG. 6 shows an example of triaxial angular velocity data x (t), y (t), z (t) when the user 2 swings and hits the golf ball 4. In FIG. 6, the horizontal axis represents time (msec) and the vertical axis represents angular velocity (dps).

FIG. 7 shows the equation (3) after calculating the combined value n ₀ (t) of the triaxial angular velocity from the triaxial angular velocity data x (t), y (t), z (t) in FIG. 6 according to the equation (2). FIG. 6 is a graph showing a composite value n (t) normalized to 0 to 100 according to FIG. In FIG. 7, the horizontal axis represents time (msec), and the vertical axis represents the combined value of angular velocities.

  FIG. 8 is a graph showing the differential dn (t) calculated from the combined value n (t) of the triaxial angular velocities in FIG. In FIG. 8, the horizontal axis represents time (msec), and the vertical axis represents the differential value of the combined value of the triaxial angular velocities. 6 and 7, the horizontal axis is displayed in 0 to 5 seconds, but in FIG. 8, 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 215 detects the previous time as an 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. 8). In a normal golf swing, it is considered that the swing speed becomes maximum at the moment of impact. Since the combined value of the angular velocities is considered to change in accordance with the swing speed, the swing analyzing unit 215 determines the timing at which the differential value of the combined angular velocity value is maximized or minimized 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 215 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. 7). ). 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 215 can grasp the timing at which the combined value of the angular velocities approaches 0 and becomes the minimum before the impact timing as the top timing.

Next, the swing analysis unit 215 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 the 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. 7). 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 215 can recognize the last timing before the combined value of the angular velocities is equal to or lower than the predetermined threshold before the top section as the timing of starting the swing motion. Note that the swing analysis unit 215 may detect the time of the minimum point at which the combined value n (t) approaches 0 before the _top time t _top as the swing start time t _start .

  Note that the swing analysis unit 215 can similarly detect each timing of the start of the swing, the top, and the impact even if the triaxial acceleration data is used.

[Calculation of shaft plane and Hogan plane]
The shaft plane SP is a first imaginary plane that is specified by the target line (target direction of the hit ball) and the longitudinal direction of the shaft of the golf club 3 at the address before the user 2 starts swinging (still state). In addition, the Hogan plane HP, when the user 2 is addressed, has 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 3a (or the golf ball 4) and the target line (the hit ball). 2nd virtual surface specified by (target direction).

  FIG. 9 is a diagram showing a shaft plane and a Hogan plane. FIG. 9 also shows the X axis, Y axis, and Z axis of the XYZ coordinate system (global coordinate system).

  As shown in FIG. 9, the present embodiment includes a first line segment 51 along the target direction of the hit ball and a second line segment 52 along the longitudinal direction of the shaft of the golf club 3, and U1, U2 , S1, S2 is a virtual plane having four vertices as a shaft plane SP (first virtual plane). In this embodiment, the position 61 of the head 3a 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 position 61 ( This is a line segment connecting the origin O) 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 shaft of the golf club 3 becomes vertical with respect to the target line (X axis) when the user 2 performs a stationary operation at the time of addressing (step S103 in FIG. 15), the first line segment 51 is the shaft of the golf club 3. This is a line segment orthogonal to the longitudinal direction of the line, that is, a line segment orthogonal to the second line segment 52. The swing analysis unit 215 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 215 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. 5, the swing analysis unit 215 can calculate G _Y and G _{Z according} to the equations (5) and (6) using the shaft length L ₁ and the inclination angle α. .

Next, the swing analysis unit 215 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 215 calculates S _Y and S _{Z according} to Expression (7) and Expression (8), respectively.

FIG. 10 is a cross-sectional view of the shaft plane SP of FIG. 9 taken along the YZ plane as viewed from the negative side of the X axis. As shown in FIG. 10, the length of the line segment connecting the midpoint S3 of the vertex S1 (see FIG. 9) and the vertex S2 (see FIG. 9) and the origin O (the width in the direction perpendicular to the X axis of the shaft plane SP). ) Is S times the length L ₁ of the second line segment 52. 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, if the length of the user 2 arms and L ₂ (see FIG. 11), the width S × L ₁ direction perpendicular to the X axis of the shaft plane SP is, the length L ₁ and arm shaft length L _The scale factor S may be set as shown in Expression (9) so as to be twice the sum of two.

Further, the arm length L ₂ of the user ₂ has a correlation with the height L ₀ (not shown) of the user 2, and based on statistical information, for example, when the user 2 is a male, the correlation shown in Expression (10) When the user 2 is a woman, it is expressed by a correlation expression such as Expression (11).

Therefore, the swing analysis unit 215 calculates the user's arm length L _{2 according} to the formula (10) or the formula (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 215 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 to generate the shaft plane. 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, the width UL in the X-axis direction may be set equal to 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 215 can calculate the coordinates of the four vertices U1, U2, S1, and S2 of the shaft plane SP.

  As shown in FIG. 9, in the present embodiment, the Hogan plane HP includes a first plane segment 51 and a third segment segment 53, and a virtual plane having four vertices U1, U2, H1, and H2. (Second virtual surface). The third line segment 53 is a line segment that connects a predetermined position 63 near the line segment that connects the shoulders of the user 2 and the position 61 of the head 3 a 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 215 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 215 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 body information 244. The predetermined position 63 is estimated using the arm length L ₂ and its coordinates (A _X , A _Y , A _Z ) are calculated.

FIG. 11 is a cross-sectional view of the Hogan plane HP of FIG. 9 taken along the YZ plane as viewed from the negative side of the X axis. In FIG. 11, 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. Accordingly, the X coordinate A _X of the predetermined position 63 is zero. As shown in FIG. 11, the swing analysis unit 215 moves 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 at a predetermined position 63. Presume that there is. Accordingly, the swing analysis unit 215 sets the Y coordinate A _Y of the predetermined position 63 to the same value as the Y coordinate G _Y of the grip end position 62. Further, the swing analysis unit 215 calculates the Z coordinate A _Z of the predetermined position 63 as the sum of the Z coordinate G _Z of the grip end position 62 and the arm length L ₂ of the user 2 as shown in Expression (12). To do.

Next, the swing analysis unit 215 multiplies the Y coordinate A _Y and the Z coordinate A _Z 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 215 calculates H _Y and H _{Z according} to the equations (13) and (14), respectively.

As shown in FIG. 11, the length of the line segment connecting the midpoint H3 of the vertex H1 (see FIG. 9) and the vertex H2 (see FIG. 9) and the origin O (the width in the direction perpendicular to the X axis of the Hogan plane HP) ) Is H times the length L ₃ of the third line segment 53. 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 user 2. Therefore, the swing analysis unit 215 can calculate the scale factor H by the equation (15).

In addition, the swing analysis unit 215 can calculate the length L ₃ of the third line segment 53 by using the Y coordinate A _Y 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 UL. coordinates of vertex _{H1 (-UL / 2, H Y} , H Z), H2 coordinates _{(UL / 2, H Y,} H Z) is calculated. Since the two vertices U1 and U2 of the Hogan plane HP are common to the shaft plane SP, the swing analysis unit 215 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 215 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 a “V zone”, and the position of the head 3a of the golf club 3 during backswing or downswing and the V Depending on the relationship with the zone, the trajectory (ball) of the hit ball can be estimated to some extent. For example, when the head 3a of the golf club 3 is present 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. Further, when the head 3a of the golf club 3 is present in a space higher than the V zone at a predetermined timing during the back swing or the down swing, it is likely to be a slicing ball. In this embodiment, as is apparent from FIG. 11, the first angle β formed by the shaft plane SP and the Hogan plane HP is set 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 face angle and club path (incident angle)]
The face angle is an index based on the inclination of the head 3a of the golf club 3 at impact, and the club path (incident angle) is an index based on the trajectory of the head 3a of the golf club 3 at impact.

  FIG. 12 is a diagram for explaining the face angle and the club path (incident angle). FIG. 12 shows a golf club 3 (only the head 3a is shown) on the XY plane viewed from the positive side of the Z axis in the XYZ coordinate system. 12, the golf club 3 has a face surface (striking surface) 74, a hitting point 75, a target line 70 indicating the target direction of the hitting ball, a plane 71 orthogonal to the target line 70, and the locus of the head 3a of the golf club 3. A curve 76 to be represented and a tangent line 72 at a hitting point 75 with respect to the curve 76 are illustrated. In FIG. 12, 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. Further, the club path (incident angle) ψ is an angle formed by the tangent line 72 (the direction in which the head 3 a passes the ball hitting point 75 in the XY plane) and the target line 70.

For example, the swing analysis unit 215 assumes that the angle formed by the face surface 74 of the head 3a and the x-axis direction (see FIG. 2) is always constant (for example, orthogonal), and the sensor unit 10 at the _impact time t _impact . From the posture, the direction of the straight line orthogonal to the face surface 74 is calculated. Then, the swing analysis unit 215 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 215 sets the direction of the speed (that is, the speed of the head 3a in the XY plane) where the Z-axis component of the speed of the head 3a at the _impact time t _impact is 0 as the direction of the tangent 72, and An angle (club path (incident angle)) ψ formed by 72 and 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 with respect to the target line 70 whose direction is fixed regardless of the direction of incidence on the ball hitting point 75 of the head 3a. 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 incident direction of the head 3a to the ball hitting point 75. 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 shaft rotation angle at top]
A shaft shaft rotation angle θ _top (not shown) at the time of _top is an angle (relative rotation angle) at which 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 toward the head 3a side of the golf club 3 (the clockwise direction when viewing the head 3a side from the grip end side) is set. The shaft shaft rotation angle θ _{top is} the positive direction. Conversely, when the user 2 is left-handed, the shaft of the tightening direction of the left screw with the tip directed toward the head 3a side of the golf club 3 (counterclockwise direction when viewing the head 3a side from the grip end side) is the shaft. The positive direction of the shaft rotation angle θ _top is assumed.

FIG. 13 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. 13, the horizontal axis represents time (s), and the vertical axis represents the shaft axis rotation angle (deg). FIG. 13 shows the shaft shaft rotation angle θ _top at the top when the swing start time (back swing start time) is the reference timing (shaft shaft rotation angle is 0 °).

In the present embodiment, as shown in FIG. 2, the y-axis of the sensor unit 10 substantially coincides with the longitudinal direction of the shaft of the golf club 3 (longitudinal direction of the golf club 3). Therefore, for example, the swing analysis unit 215 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.

1-4. Diagnosis Processing in Swing Analysis In this embodiment, as an example of a swing analysis diagnosis method, the position of the head 3a during halfway back and halfway down corresponds to the shaft plane SP calculated by the swing analysis unit 215 and A method is used in which a determination is made according to which of a plurality of regions determined based on the Hogan plane HP (V zone) belongs. Hereinafter, this method will be described with reference to FIG.

  For example, the swing diagnosis unit 211 determines which position of the plurality of regions in which the position of the head 3a during halfway back and halfway down is determined based on the shaft plane SP and the Hogan plane HP (V zone), respectively. Determine if it belongs to an area.

FIG. 14 is a diagram illustrating an example of a relationship between the shaft plane SP and the Hogan plane HP (V zone) and a plurality of regions. FIG. 14 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. Region C is a space (the space between the boundary surface S _CD between the boundary surface S _BC and region D of the region B) which is sandwiched between the regions B and D. 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 S _DE on the opposite side to the region C. In the display example of the present embodiment, which will be described later, an example using the areas A to D will be described.

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 S _AB and the boundary surface S _BC are respectively set to β / 4, by setting the angle to each beta / 4 between the boundary surface S _CD and interface S _DE, region B, region C, and the angle of the area D are both set to beta / 2.

Since a swing in which the Y coordinate of the position of the head 3a is negative during halfway back or halfway down cannot be assumed, in FIG. 14, the boundary surface on the side opposite to the boundary surface S _AB in the region A is XZ. It is set to a plane. Similarly setting, since the Z coordinate of the position of the half-way back or during Halfway down when the head 3a will not be assumed swing such that negative, the boundary surface between the boundary surface S _DE region E opposite to the XY plane Has been. 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 diagnosis unit 211 determines the coordinates of the four vertices U1, U2, S1, and S2 of the shaft plane SP included in the data related to the swing (the selected swing analysis data 248) and the Hogan plane HP. Based on the coordinates of the four vertices U1, U2, H1, and H2, boundary surfaces S _AB , boundary surface S _BC , boundary surface S _CD, and boundary surface S _DE of regions A to E are set. Next, the swing diagnosis unit 211 stores the coordinates of the position of the head 3a at the time of halfway back and the coordinates of the position of the head 3a at the time of halfway down included in the data relating to the swing (selected swing analysis data 248). It is determined which one of A to E belongs.

  Information on the determination result is transmitted to the image data generation unit 216 and the display processing unit 218, and is used for an analysis result screen described later. In the display example in the present embodiment shown in FIG. 18 described later, a plurality of areas A to D to which (A to D) are assigned in advance as identification data are displayed, and golf is played against the plurality of areas A to D. Areas A to D to which the position of the club 3 belongs are displayed. By using such a display, it is possible to check to which area (any one of the areas A to D) the position of the golf club 3 belongs based on the identification data (A to D). As a result, it is possible to facilitate the quality determination of the position of the golf club 3 at each timing.

  The areas A to D displayed on the motion analysis display device 20 are based on the relationship with the line segments SPL and HPL (see FIG. 18) indicating at least one virtual plane (the shaft plane SP and the Hogan plane HP). It is preferable that it is set. As a result, the characteristics of the swing are determined based on the relationship between the virtual plane (the shaft plane SP and the Hogan plane HP) and the identification data (A to D) relating to the position of the golf club 3 at a desired timing during the swing. It becomes possible to level and specify.

  Thereafter, the swing diagnosis unit 211 includes, for example, “area to which the position of the head 3a belongs at the time of halfway back” and “area to which the position of the head 3a belongs at the time of halfway down” included in the data relating to the preset swing. Judgment is made with reference to the information. Specifically, the number of points for each combination of the area to which the position of the head 3a at the halfway back belongs and the area to which the position of the head 3a at the halfway down belongs, for example, the position of the head 3a at the halfway back is the area. The number of points when the head 3a belongs to A and the position of the head 3a at the time of halfway down belongs to the region A is determined and determined by its height.

  The swing diagnosis unit 211 is such that the hit ball predicted based on the relationship between the shaft plane SP, the Hogan plane HP, the position of the head 3a at the halfway back, and the position of the head 3a at the halfway down is easily bent. A low score may be calculated. “Easy to bend” may mean that the trajectory after hitting is easy to bend (easily becomes a slice or hook), or may be that the direction of the hitting ball is easily deviated from the target direction (target line). Alternatively, the swing diagnosis unit 211 may calculate a higher score as the hit ball easily jumps straight. “Easy to fly straight” may mean that the trajectory after hitting is difficult to bend (it is likely to be straight) or that the direction of the hitting ball is difficult to deviate from the target direction (target line).

  For example, when the position of the head 3a at the time of halfway back belongs to the region E and the position of the head 3a at the time of halfway down belongs to the region A, it is predicted that the hit ball is likely to bend, and therefore the swing diagnosis unit 211 Calculates a relatively low score. Further, for example, when both the position of the head 3a at the time of halfway back and the position of the head 3a at the time of halfway down belong to the region C, it is predicted that the hit ball is likely to fly straight. A high score is calculated.

  Further, for example, when both the position of the head 3a at the time of halfway back and the position of the head 3a at the time of halfway down belong to the region C, it is predicted that the hit ball is likely to fly straight. A high score is calculated.

The swing diagnosis unit 211 can evaluate the item of “rotation” depending on which of a plurality of ranges the shaft axis rotation angle θ _top and the face angle φ at the time of _top belong. Specifically, first, the swing diagnosis unit 211 determines that the top shaft shaft rotation angle θ _top (not shown) and the face angle φ (see FIG. 12) included in the data related to the swing (diagnosis target input data), respectively. Determine which range it belongs to. Next, the swing diagnosis unit 211 calculates a score corresponding to the determination result with reference to a rotation score table (not shown).

The swing diagnosis unit 211 may calculate a lower score as the hitting ball predicted based on the relationship between the shaft shaft rotation angle θ _top and the face angle φ at the time of _top is easier to bend. For example, when the shaft shaft rotation angle θ _{top at the top} is extremely large, the face surface (striking surface) 74 (see FIG. 12) of the golf club 3 is extremely open. The ball is expected to bend easily without returning to the square. When the face angle φ is extremely large, the face surface at the time of impact is extremely open (open), and when the face angle φ is extremely small (a negative value having a large absolute value), the impact is The face surface is extremely closed (closed), and the ball is expected to bend easily in any state. In such a case, the swing diagnosis unit 211 calculates a relatively low score.

Further, for example, if the shaft axis rotation angle θ _top at the time of the _top is small, it is expected that the face surface returns to the square at the time of impact, and the hit ball is likely to fly straight. Further, when the face angle φ is close to 0 °, it is expected that the hit ball is likely to fly straight because the face surface at impact is close to square. In such a case, the swing diagnosis unit 211 calculates a relatively high score.

  According to the swing analysis system 1 described above, the swing of the user (subject) 2 is measured by the inertial sensors (the acceleration sensor 12 and the angular velocity sensor 14) of the sensor unit 10. Then, based on the output of the measurement result, the swing of the user (subject) 2 is analyzed by the motion analysis display device 20 as the swing analysis device, and the motion analysis display as the swing analysis device is displayed as an image showing the analysis information and the swing trajectory. It is displayed on the display unit 25 of the device 20. In this way, it is not necessary to use a large-scale imaging device or the like, and the user 2 can easily perform a swing analysis.

  Further, according to the motion analysis display device 20 as the swing analysis device, the objects 31 to 35 related to the golf club 3 at the positions of the swing locus 30 and the golf club 3 as the exercise equipment at a plurality of timings during the swing. Are superimposed on the display unit 25 and displayed. Thereby, it becomes possible to objectively recognize the transition of a series of movements of the swing of the user 2, and an efficient swing analysis can be performed.

  The analysis information displayed on the motion analysis display device 20 is any one of the orientation information of the golf club 3, for example, the orientation of the head 3 a (striking part), the orientation of the striking surface of the head 3 a, and the rotation angle of the golf club 3. It is. Thereby, the posture information of the head 3a of the golf club 3 at a specific timing, the orientation of the striking surface of the head 3a, the rotation angle of the golf club 3, and the like can be objectively and easily determined and analyzed. Accuracy and analysis efficiency can be increased.

  The areas A to D displayed on the motion analysis display device 20 are based on the relationship with the line segments SPL and HPL (see FIG. 18) indicating at least one virtual plane (the shaft plane SP and the Hogan plane HP). Is set. As a result, the characteristics of the swing are determined based on the relationship between the virtual plane (the shaft plane SP and the Hogan plane HP) and the identification data (A to D) relating to the position of the golf club 3 at a desired timing during the swing. It becomes possible to level and specify.

  In addition, since the plurality of timings displayed on the motion analysis display device 20 include the halfway back, top, natural uncock, halfway down, and impact, which are important timings as the swing of the golf club 3, Analysis accuracy and analysis efficiency can be increased. In addition, it is more preferable that the plurality of displayed timings include at least two of halfway back, top, natural uncock, halfway down, and impact, thereby further improving analysis accuracy and analysis efficiency. it can.

1-5. Operation Procedure of Swing Analysis (Motion Analysis) System Next, the swing analysis (motion analysis) system 1 and the swing motion operation procedure of the user 2 (analysis result display method) will be described with reference to FIG. The user (subject) 2 performs a series of swing operations for hitting the golf ball 4 according to a predetermined procedure. FIG. 15 is a flowchart showing a swing operation procedure of the user 2 and a swing analysis procedure performed by the swing analysis (motion analysis) system 1.

  In the following description of the procedure, the symbols used for the configuration of the swing analysis (motion analysis) system 1 described above are used. Further, the following operation procedure can be realized by causing a computer to execute the swing analysis program (motion analysis program) 240 in the swing analysis system 1.

  As shown in FIG. 15, the user 2 first performs an input operation on the body information 244 of the user 2 and information on the golf club 3 used by the user 2 via the motion analysis display device 20 (step S100). The body information 244 includes at least one piece of information on the height, arm length, and leg length of the user 2, and may further include gender information and other information. The golf club information 242 includes information on the length (club length) of the golf club 3 and information on at least one of the types (counts) of the golf club 3.

  In step S <b> 100, the user 2 inputs body information such as height, sex, age, and nationality as body information 244, and inputs information about the golf club such as the club head and count as golf club information 242. The information included in the body information 244 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 or together with the height. Similarly, the information included in the golf club information 242 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. .

  Next, the user 2 performs a measurement start operation (operation for causing the sensor unit 10 to start measurement) via the motion analysis display device 20 (step S101). In step S101, when the user 2 performs a measurement start operation, the sensor unit 10 (the acceleration sensor 12 as the inertial sensor and the angular velocity sensor 14) measures the triaxial acceleration and the triaxial angular velocity at a predetermined period (for example, 1 ms). The measured data is sequentially transmitted to the motion analysis display device 20. Communication between the sensor unit 10 and the motion analysis display device 20 may be wireless communication or wired communication. This data represents the position and orientation of the sensor unit 10, and thus the position and orientation of each part of the golf club 3.

  Next, after receiving a notification (for example, a voice notification) instructing the user 2 to take the address posture (basic posture before starting the exercise) from the exercise analysis display device 20 (Yes in step S102), the golf club The position of the address is taken so that the longitudinal axis of the shaft 3 is perpendicular to the target line (the target direction of the hit ball), and it is stopped so as to be longer than a predetermined time (step S103). Here, the motion analysis display device 20 generates (acquires) posture information of the hand 2a of the user 2 at rest using the measurement data output from the sensor unit 10 (step S104). If notification (for example, notification by voice) instructing to take the address posture (basic posture before the start of exercise) is not received from the exercise analysis display device 20 (No in step S102), it waits until it is notified. To do.

  Next, after receiving notification (for example, notification by voice) that permits the swing from the motion analysis display device 20 (Yes in Step S105), the user 2 performs a swing motion and hits the target golf ball 4 ( Step S106). Note that if there is no notification permitting swing (for example, notification by voice) from the motion analysis display device 20 (No in step S105), the swing operation waits until a notification permitting swing is given.

  Next, the motion analysis display device 20 determines each timing in a series of swings (for example, half way back, natural uncock, half way down, impact, etc.) based on the measurement data from the sensor unit 10 that measured the swing of the user 2. Is detected (step S107). Specifically, it is described in detail in the calculation of the position and posture of the component and the detection of each timing of the swing operation described in the above section 1-3.

  Next, the motion analysis display device 20 is based on the measurement data from the sensor unit 10, and the position of the head 3a of the golf club 3 (see FIG. 3) and the face surface 74 (see FIG. 12) is calculated (step S108). In addition, the motion analysis display device 20 calculates the shaft axis rotation angle θ (not shown), the face angle φ, and the like of the golf club 3 (step S109).

  Next, the swing analysis unit 215 of the motion analysis display device 20 generates (acquires) swing trajectory data (swing trajectory information) based on the obtained series of swing positions, postures, and motion data (step S110). .

  Next, the swing diagnosis unit 211 of the motion analysis display device 20 performs various analyzes related to a series of swings (step S111). The analysis here is the above described 1-4. Various diagnoses described in the diagnosis process in the swing analysis are performed. Information on analysis (diagnosis) results (swing analysis information) is transmitted to the image data generation unit 216 and the display processing unit 218.

  Next, the motion analysis display device 20 displays an image on the display unit 25 as swing analysis result information based on the swing trajectory information generated in step S110 and various analysis results related to a series of swings performed in step S111. Information is displayed (step S113). Thus, a series of steps is completed.

  Hereinafter, a specific display example displayed on the display unit 25 in step S113 will be described with reference to FIGS. 16 to 19 show a display example of swing information, FIG. 16 is a view showing display example 1, and FIG. 17 is a view showing a transition of the shaft rotation axis in a display example of swing analysis information. 18 is a diagram showing a display example 2 and FIG. 19 is a diagram showing a display example 3. 20 is a diagram showing an application example 1 related to the display of swing information, and FIG. 21 is a diagram showing an application example 1 related to the display of swing information.

(Display example 1)
First, display example 1 displayed on the display unit 25 will be described with reference to FIG. The motion analysis display device 20 displays swing information (swing analysis information) on the display unit 25 at a timing when a predetermined time has elapsed after detecting the end of the swing. The display according to the display example 1 displays a swing locus 30 that approximates a swing motion, as shown in FIG.

  As shown in FIG. 16, the display unit 25 displays a series of swing motions of the user 2 as a swing locus 30. The display of the swing locus 30 in this example is a front view from the direction intersecting the hitting surface of the golf ball 4 (see FIG. 1) in the head 3a (see FIG. 1) of the golf club 3 (see FIG. 1). It is displayed as an image from the rear as viewed from the side opposite to the golf ball 4 side. In addition, a mark 36 is displayed as an indication indicating the viewing direction. This display direction can also be displayed as viewed from the golf ball 4 side.

  Further, in the display of the swing locus 30 of this example, the swing locus 30 and a plurality of objects 31 to 35 indicating the positions of the golf clubs at the respective timings (time) are displayed on the display unit 25 in an overlapping manner. In FIG. 16, the object 31 is at address (stationary) or impact timing, the object 35 is halfway back timing, the object 34 is top timing, the object 33 is natural uncock timing, and the object 32 is halfway down. The timing is shown. Here, the natural uncock timing is the timing of the movement of the head 3a of the golf club 3 being accelerated by decelerating the grip side of the golf club 3 when the cock is released by a downswing. Note that a display window 37 showing other analysis information may be displayed on a part of the display unit 25 (the lower right part of the screen in this example).

  Further, in the display of the swing trajectory 30 of this example, the user 2 selects and designates the timing at which the detailed information of the analysis is to be displayed among the objects 31 to 35 displayed on the display unit 25. It can be performed. In this case, the instruction by the user 2 can be performed by, for example, touching the display unit 25 with the finger of the user 2 (screen touch). This example shows an example in which an object 32 (halfway down timing) is selected and instructed, and the instructed object 32 has a darker color and a larger size in order to facilitate the determination of the instruction. Highlighted. Note that the highlighted display is not limited to the application of both the change in color tone and the change in size, and may be configured to apply either one as long as it can be determined that the enhancement is performed. Other highlighting may be used.

  Note that the detailed information (analysis information) of the analysis indicated and displayed by the user 2 includes the posture information of the golf club 3, for example, the position of the head 3 a of the golf club 3, and the face surface 74 ( The orientation of the golf club 3 (see FIG. 12), the shaft shaft rotation angle θ (not shown) of the golf club 3, the face angle φ (see FIG. 12), and the like can be exemplified.

  Detailed analysis information (analysis information) to be displayed here is superimposed on the same screen as the swing locus 30 and the objects 31 to 35 (for example, the display window 37), or the screen is switched at a predetermined timing, for example, as shown in FIG. As shown, a graph showing the transition of the shaft rotation axis during backswing as detailed information (analysis information) can be displayed. In the graph shown in FIG. 17, the transition of the shaft rotation axis is displayed only in a section from a desired timing range from rest to top timing. As a result, the display of the rotation axis is performed from the stationary time, which is a more important section, to the top timing, thereby making it easier to make a determination and improving the practice efficiency.

  According to the display method according to the display example 1, the swing locus 30 and the objects 31 to 35 related to the golf club 3 at the respective positions of the golf club 3 at a plurality of timings during the swing are overlapped on the display unit 25. By displaying, it is possible to objectively recognize how the series of swing movements has changed. In addition, by specifying an object (in this example, object 32) that the user 2 has determined that analysis information is necessary, the analysis information of the timing related to the specified object 32 is displayed, so that the analysis information can be obtained efficiently. Can do. Moreover, since necessary analysis information can be obtained in a concentrated manner, analysis efficiency can be improved. At this time, the display processing unit 218 preferably highlights the object 32 specified by the user 2 by changing its color tone or size. Such highlighting makes it easy to recognize and recognize the specified object (in this example, the object 32).

(Display example 2)
Next, a display example 2 displayed on the display unit 25 will be described with reference to FIG. Display example 2 is displayed on display unit 25 at the same timing as display example 1 described above. In the description of the display example 2, the description of the same contents as the display example 1 described above is omitted.

  As shown in FIG. 18, the display according to the display example 2 includes, in addition to the swing locus 30 similar to the display example 1 and the plurality of objects 31 to 35 indicating the positions of the golf clubs at the respective timings (times). Line segments SPL and HPL indicating the V zone by the shaft plane SP and the Hogan plane HP are displayed. The line segment SPL indicates the shaft plane SP as a virtual plane, and the line segment HPL approximates the Hogan plane HP as a virtual plane. Further, in the display example 2, identification marks A to D indicating a plurality of areas determined based on the above-described shaft plane SP and Hogan plane HP (V zone) are displayed.

  According to the display method according to the display example 2, for example, whether the position of the head 3a at the time of halfway back and at the time of halfway down is located in the shaft plane SP and the Hogan plane HP (V zone), respectively. Can be visually recognized, and thereby the characteristic of the swing can be determined. Further, the position of the head 3a at a desired timing during the swing, for example, the position of the head 3a at the time of halfway back and halfway down, which area of the areas A to D is displayed by the identification data (A to D). The feature of the swing can be visually recognized depending on whether or not it exists. Alternatively, in any region A to D in which the position of the head 3a at a desired timing during the swing, for example, the position of the head 3a at the time of halfway back and halfway down is displayed in the identification data (A to D). It is possible to determine (diagnose) the characteristics of the swing depending on whether it exists. As described above, since the swing state can be objectively and easily determined (diagnosed), the practice efficiency can be increased.

(Display example 3)
Next, a display example 3 displayed on the display unit 25 will be described with reference to FIG. Display example 3 is displayed on display unit 25 at the same timing as display example 1 described above. In the description of the display example 3, the description of the same contents as the display example 1 described above is omitted.

  As shown in FIG. 19, the display according to the display example 3 displays a swing trajectory 30 and a plurality of objects 31 to 35 indicating the positions of the golf clubs at each timing (time). The display direction of the swing trajectory 30 is different from that of the display example 1 described above. The display of the swing locus 30 in this example is a front view from the direction along the hitting surface of the golf ball 4 (see FIG. 1) in the head 3a (see FIG. 1) of the golf club 3 (see FIG. 1). It is displayed as an image from the front of the user 2 when viewed from the golf ball 4 side. Further, a mark 36a is displayed as an indication indicating the viewing direction. This display direction can also be displayed as viewed from the side opposite to the golf ball 4 side (the back side of the user 2).

  According to the display method according to Display Example 3, the same effects as those of Display Example 1 described above can be achieved. Specifically, it is possible to objectively recognize how a series of swing movements has changed. Further, since the object 32 designated by the user 2 is highlighted and the analysis information of the timing related to the designated object 32 is displayed, the analysis information can be obtained efficiently.

  Next, an application example related to the display of swing information will be described with reference to FIGS. Application example 1 and application example 2 described below are display examples to which display example 2 described above is applied. Therefore, the description of the same configuration and contents as those of the display example 2 is omitted.

(Application 1)
As shown in FIG. 20, the application example 1 related to the display of the swing information includes, in addition to the swing locus 30 similar to the display example 1 and the plurality of objects 31 to 35 indicating the positions of the golf clubs at each timing (time). , Line segments SPL2, HPL2, and three virtual lines RL1, RL2, RL3 parallel to the line segments SPL2, HPL2 are displayed. Furthermore, in the display of the application example 1, identification marks (A to D) indicating a plurality of areas A to D determined based on the three virtual lines RL1, RL2, and RL3 are displayed.

  The line segment SPL2 indicates the shaft plane SP as a virtual plane, and the line segment HPL2 approximates the Hogan plane HP as a virtual plane. In addition, the virtual line RL1 in this example passes through the side of the user 2 and approximates a line segment parallel to the line segments SPL2 and HPL2, and the virtual line RL2 passes through the head of the user 2 and passes through the line segments SPL2 and HPL2 The virtual line RL3 passes through the thigh of the user 2 and approximates a line segment parallel to the line segments SPL2 and HPL2. Further, the region A is located outside the virtual line RL2, the region B is located between the virtual line RL1 and the virtual line RL2, and the region C is located between the virtual line RL1 and the virtual line RL3. The region D is located outside the virtual line RL3.

(Application example 2)
As shown in FIG. 21, the application example 2 related to the display of the swing information is similar to the application example 1, the swing trajectory 30, and a plurality of objects 31 to 35 indicating the position of the golf club at each timing (time), line The three virtual lines RL1, RL2, and RL3 extending in the direction along the line segments SPL3 and HPL3 and the line segments SPL3 and HPL3 are displayed. Further, identification marks (A to D) indicating a plurality of areas A to D determined based on the three virtual lines RL1, RL2 and RL3 are displayed.

  The line segment SPL3 indicates the shaft plane SP as a virtual plane, and the line segment HPL3 approximates the Hogan plane HP as a virtual plane. Further, the virtual line RL1 in this example is a line segment that approximates a line segment that passes through the abdomen of the user 2 and is parallel to the line segments SPL3 and HPL3. The virtual line RL2 is a line segment that passes through the shoulder of the user 2 and is inclined to open toward the object 31 with respect to the line segment HPL3. The virtual line RL3 is a line segment that passes through the knee of the user 2 and is inclined to open toward the object 31 with respect to the line segment SP3L. Further, the region A is located outside the virtual line RL2, the region B is located between the virtual line RL1 and the virtual line RL2, and the region C is located between the virtual line RL1 and the virtual line RL3. The region D is located outside the virtual line RL3.

  According to the display methods of the application example 1 and the application example 2 related to the display of the swing information, the same effects as the display example 2 described above can be obtained. For example, any of the areas A to D in which the position of the head 3a at a desired timing during a swing, for example, the position of the head 3a at the time of halfway back and halfway down, is displayed in the identification data (A to D). The feature of the swing can be visually recognized depending on whether or not it exists. Alternatively, in any region A to D in which the position of the head 3a at a desired timing during the swing, for example, the position of the head 3a at the time of halfway back and halfway down is displayed in the identification data (A to D). It is possible to determine (diagnose) the characteristics of the swing depending on whether it exists. As described above, since the swing state can be objectively and easily determined (diagnosed), the practice efficiency can be increased.

  According to the swing analysis (motion analysis) system 1 and the operation procedure (analysis result display method) of the swing operation of the user 2 described above, the acceleration sensor 12 and the angular velocity sensor 14 as the inertial sensors constituting the sensor unit 10 are used. Analysis data such as the swing trajectory 30 is generated based on the output. Therefore, it is not necessary to use a large-scale photographing apparatus or the like, and the user 2 can easily perform a swing analysis. Further, by displaying the swing locus 30 and the objects 31 to 35 related to the golf club 3 at the respective positions of the golf club 3 at a plurality of timings during the swing on the display unit 25, a series of swings is displayed. It is possible to objectively recognize how the operation has changed.

  In addition, when the user 2 designates an object for which analysis information is determined to be necessary among the displayed objects 31 to 35, timing analysis information relating to the designated object (the object 32 in the above example) is displayed. Therefore, analysis information can be obtained efficiently. Moreover, since necessary analysis information can be obtained in a concentrated manner, analysis efficiency can be improved.

1-6. Other configuration of motion analysis display device (head mounted display (HMD))
Next, an example in which a head-mounted head mounted display (HMD) is used as the motion analysis display device 20 will be described with reference to FIG. FIG. 22 is a perspective view showing an example of a head mounted display (HMD) as a motion analysis display device.

  As shown in FIG. 22, the head mounted display (HMD) 500 includes 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 reflecting mirror 507 is disposed in front of the second beam splitter 505, partially reflects the partially reflected light of the second beam splitter 505, and transmits the second beam splitter 505 to transmit the right eye of the user 2. Lead to.

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

  Such a head-mounted display (HMD) 500 includes analysis information (see FIGS. 16 and 18) in a series of swing motions of the user 2 and a swing that approximates the swing motion as shown in the above display example. Swing information such as the locus 30 (see FIGS. 16 and 18) is displayed. Since the display contents are the same as those in the above display example, detailed description thereof is omitted.

  According to the head-mounted display (HMD) 500 described above, since the display is performed while being worn on the head, the user 2 can display his / her own swing information and posture (position) information of the hand 2a as information. It is possible to check without holding the motion analysis display device 20 provided with the unit 25 by hand.

  The head mounted display (HMD) 500 has the function of the motion analysis display device 20, and may perform swing analysis and display of swing information based on the measurement data of the sensor unit 10, or a separate motion analysis display. You may use as a display part which displays the image data transmitted from the apparatus 20. FIG. The function of the motion analysis display device (display device) 20 is the processing unit 21 (an example of the processing unit), the communication unit 22, the operation unit 23, the storage unit 24, the display unit 25, and the sound output unit as described above. 26, and a photographing unit 27.

(Arm-mounted analysis display device)
Next, an example in which an arm-mounted analysis display device is used as an example of a wearable type (body-mounted type) will be described with reference to FIG. FIG. 23 is a perspective view showing an arm-mounted movement analysis display device as an example of a wearable type.

  As shown in FIG. 23, the wearable type (arm wearing type) analysis display device 600 is attached to a given part (in this example, the wrist) of the user (subject) 2 (see FIG. 1), and the sensor unit 10 Swing analysis based on measurement data (see FIG. 1) and display of swing information are performed. The analysis display device 600 is attached to the user 2 to display swing analysis information such as swing analysis and posture information of the hand 2a of the user 2 (see FIG. 1), and the device main body 610 attached to the device main body 610. And a band portion 615 for mounting to the user 2.

  In the instrument main body 610 of the analysis display device 600, a bottom case 613 is disposed on the side attached to the user 2, and a top case 611 is disposed on the side opposite to the side attached to the user 2. A bezel 618 is provided on the top side (top case 611) of the device body 610, and a glass plate 619 is provided as a top plate portion (outer wall) that is disposed inside the bezel 618 and protects the internal structure. Yes. In addition, a pair of band mounting portions 617 that are connecting portions to the band portion 615 are provided on both sides of the bottom case 613.

  The device body 610 includes a display unit such as a liquid crystal display (LCD 634) immediately below the glass plate 619. The user 2 can view the swing analysis information displayed on the liquid crystal display (LCD 634) and the posture information of the hand 2a of the user 2 through the glass plate 619. Moreover, the apparatus main body 610 is similar to the motion analysis display device 20 of the embodiment described above with reference to FIG. 4, and includes a processing unit 21, a communication unit 22, an operation unit 23, a storage unit 24, a display unit 25, and a sound output unit. 26 and the photographing unit 27 can be included. The display unit 25 corresponds to a display unit such as a liquid crystal display (LCD 634) in this example.

  On the display unit of the liquid crystal display (LCD 634), as shown in the above display example, analysis information (see FIGS. 16 and 18) in a series of swing motions of the user 2 and a swing locus 30 approximating the swing motions. Swing information such as (see FIGS. 16 and 18) is displayed. Since the display contents are the same as those in the above display example, detailed description thereof is omitted.

  Further, other advice information based on the swing analysis result, for example, a text image representing the swing type of the user 2 and advice (practice method etc.) suitable for the swing type of the user 2 are displayed on the display unit of the liquid crystal display (LCD 634). You may display the text image to represent. A moving image may be displayed as a video image on the display unit of the liquid crystal display (LCD 634).

  In the above description, an example in which the top plate portion of the device main body 610 is realized by the glass plate 619 is a transparent member capable of browsing the LCD 634, and is included in the top case 611 and the bottom case 613 such as the LCD 634. The top plate portion can be made of a material other than glass, such as transparent plastic, as long as the member has a strength that can protect the structure. Further, although a configuration example in which the bezel 618 is provided is shown, a configuration in which the bezel 618 is not provided may be used.

  According to the wearable type (arm wearing type) analysis display device 600 described above, since the display is performed while being worn on the arm part, the user 2 needs his / her own swing information and posture (position) information of the hand 2a. It is possible to check the information without holding the display unit (liquid crystal display (LCD 634)) on which the information is displayed.

  Note that the wearable (arm-mounted) analysis display device 600 has the function of the motion analysis display device 20 described above, and may perform swing analysis or display of swing information based on the measurement data of the sensor unit 10. Alternatively, the image data transmitted from the separate motion analysis display device 20 may be used as a display unit that displays the image data. The function of the motion analysis display device (display device) 20 is a processing unit 21 (an example of a processing unit), a communication unit 22, an operation unit 23, as described in the motion analysis display device 20 of the above-described embodiment. A storage unit 24, a display unit 25, a sound output unit 26, and a photographing unit 27 are included.

  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 invention includes a configuration that achieves the same 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 as test subject, 2a ... User's hand, 3 ... Golf club, 3a ... Head, 4 ... Golf ball as target, 10 ... Sensor unit as measuring part, 12 ... As inertial sensor 14 ... Angular velocity sensor as inertial sensor, 16 ... Signal processing unit, 18 ... Communication unit, 20 ... Motion analysis display device (display device), 21 ... Processing unit, 22 ... Communication unit, 23 ... As input unit , 24, storage unit, 25, display unit, 26, sound output unit, 27 ... photographing unit, 30 ... swing locus, 31, 32, 33, 34, 35 ... object, 36 ... mark, 37 ... display window , 210 ... Data acquisition part, 211 ... Swing diagnosis part, 215 ... Swing analysis part, 216 ... Image data generation part, 217 ... Storage processing part, 218 ... Table Processing unit, 219 ... Sound output processing unit, 240 ... Swing analysis program, 242 ... Golf club information, 244 ... Body information, 246 ... Sensor mounting position information, 500 ... Head mounted display (HMD), 600 ... Wearable type (arm wearing) Type) analysis display device.

Claims (25)

Based on the output of the inertial sensor that measures the swing of the exercise equipment,
In the obtained swing trajectory,
The display method which displays the object which concerns on the said exercise equipment in each position of the said exercise equipment of the several timing in the said swing in piles. In claim 1,
Specify one of the objects
A display method for displaying analysis information of the timing related to the designated object. In claim 2,
The display is performed by instructing the display unit on which the object is displayed. In claim 2 or claim 3,
A display method for highlighting the designated object. In any one of Claims 2 thru | or 4,
The display method in which the analysis information is posture information of the exercise equipment. In claim 5,
The posture information is a display method for displaying the region to which the position of the exercise equipment belongs for a plurality of regions to which identification data is allocated in advance. In claim 6,
The display method in which the area is set based on a relationship with at least one virtual plane. In any one of Claims 2 thru | or 4,
The display method, wherein the analysis information is posture information of a hitting portion of the exercise equipment. In claim 8,
The said attitude | position information is a display method which is the direction of the striking surface of the said striking part. In any one of Claims 2 thru | or 4,
The display method, wherein the analysis information is a rotation angle of the exercise equipment. In any one of Claims 1 thru | or 10,
The swing is a swing of a golf club,
The display method, wherein the plurality of timings include at least two of a halfway back, a top, a natural uncock, a halfway down, and an impact. A processing unit that generates analysis data related to the swing using an output of an inertial sensor that measures a swing of the exercise equipment, and outputs a swing trajectory and analysis information based on the analysis data;
A display unit for displaying the swing locus and the analysis information;
Including
In the swing trajectory,
A swing analysis apparatus that superimposes an object related to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing and displays the objects on the display unit. In claim 12,
Including an operation unit for designating any of the objects,
A swing analysis apparatus that displays the analysis information related to the designated object. In claim 13,
The operation unit is provided in the display unit,
The designation is performed by a swing analysis device for the display unit. In claim 13 or claim 14,
The specified object is a swing analysis device that is highlighted. The method according to any one of claims 13 to 15,
The swing analysis apparatus, wherein the analysis information is posture information of the exercise equipment. In claim 16,
The posture information is a swing analysis device in which the region to which the position of the exercise device belongs is displayed for a plurality of regions to which identification data is allocated in advance. In claim 17,
The swing analysis apparatus, wherein the region is set based on a relationship with at least one virtual plane. The method according to any one of claims 13 to 15,
The swing analysis apparatus, wherein the analysis information is posture information of a hitting portion of the exercise equipment. In claim 19,
The posture information is a swing analysis device that is a direction of a hitting surface of the hitting unit. The method according to any one of claims 13 to 15,
The swing analysis apparatus, wherein the analysis information is a rotation angle of the exercise equipment. In any one of Claims 12 to 21,
The swing is a swing of a golf club,
The swing analysis device includes at least two of the plurality of timings including a halfway back, a top, a natural uncock, a halfway down, and an impact. A swing analysis device according to any one of claims 12 to 22,
A swing analysis system including an inertial sensor. Generating a swing trajectory and analysis information based on the output of an inertial sensor that measures the swing of the exercise equipment;
Outputting the swing trajectory and the analysis information;
Overlaying and displaying an object related to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing on the swing locus;
Swing analysis program that allows a computer to execute Generating a swing trajectory and analysis information based on the output of an inertial sensor that measures the swing of the exercise equipment;
Outputting the swing trajectory and the analysis information;
Overlaying and displaying an object related to the exercise equipment at each position of the exercise equipment at a plurality of timings during the swing on the swing locus;
A recording medium on which a program for causing a computer to execute is recorded.