Motion analysis method and motion analysis device

• US 10,478,707 B2
• Filed: 06/01/2016
• Issued: 11/19/2019
• Est. Priority Date: 06/21/2013
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Sato, Masafumi
• Primary Examiner(s): Deodhar, Omkar A
• Application Number:
  US15/170,162
• Publication Number:
  US 20160271481A1
• Time in Patent Office: 1,266 Days
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 5/1122 of movement trajectories
• CPC Class Codes: A61B 5/6895 Sport equipment
• CPC Class Codes: A61B 5/744 Displaying an avatar, e.g. an animated cartoon character
• CPC Class Codes: A63B 2071/0647 Visualisation of executed movements
• CPC Class Codes: A63B 2208/0204 Standing on the feet
• CPC Class Codes: A63B 2220/18 Inclination, slope or curvature
• CPC Class Codes: A63B 2220/40 Acceleration
• CPC Class Codes: A63B 2220/51 Force
• CPC Class Codes: A63B 2220/803 Motion sensors
• CPC Class Codes: A63B 2220/833 Sensors arranged on the exercise apparatus or sports implement
• CPC Class Codes: A63B 2220/836 Sensors arranged on the body of the user
• CPC Class Codes: A63B 24/0003 Analysing the course of a movement or motion sequences during an exercise or trainings sequence, e.g. swing for golf or tennis
• CPC Class Codes: A63B 24/0006 Computerised comparison for qualitative assessment of motion sequences or the course of a movement
• CPC Class Codes: A63B 69/36 for golf
• CPC Class Codes: A63B 69/3608 Attachments on the body, e.g. for measuring, aligning, restraining A63B69/0059, A63B69/3673 take precedence
• CPC Class Codes: A63B 71/0619 Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
• CPC Class Codes: G01P 15/02 by making use of inertia forces using solid seismic massesG01P15/14 takes precedence
• CPC Class Codes: G09B 19/003 Repetitive work cycles; Sequence of movements

Abstract

A motion analysis device includes a calculation unit which specifies a first imaginary plane, that is, a shaft plane formed by a first line segment representing a direction in which a shaft part of a sporting gear in a static posture extends and a second line segment representing a ball hitting direction, with the use of an output from an inertial sensor.

Claims

1. A display device that receives an output of an inertial sensor associated with a golf club held by a user, comprising:

a processor that determines from the output of the inertial sensor a first plane including (a) a first straight line that extends in an extending direction of a shaft portion of the golf club, and (b) a second straight line showing a ball hitting direction, and determines a second plane based on a user'"'"'s static position holding the golf club, a ball-hitting position and a ball hitting direction; and

a display that displays on a screen an image of the first plane, the second plane and the golf club simultaneously,

wherein the first and second planes are visually displayed in a three-dimensional space, and wherein the second plane is determined in three dimensions based upon coordinates of a shoulder of the user.

2. The display device according to claim 1, wherein the display device displays a trajectory of a swing of the golf club.

3. The display device according to claim 1, wherein the first and second planes contact each other.

4. The display device according to claim 1, wherein the first plane includes (i) a first straight line that extends in an extending direction of the golf club in a static position and (ii) a second straight line showing the ball hitting direction.

5. The display device according to claim 1, wherein the second plane includes (i) a third straight line connecting (a) a neck or shoulder of the user and (b) the ball hitting position and (ii) a second straight line showing the ball hitting direction.

6. The display device according to claim 1, wherein the first and second planes are planes specified in a static swing position of the golf club.

7. A display device that receives an output of an inertial sensor associated with a sporting gear held by a user, comprising:

a processor that determines from the output of the inertial sensor;

(i) a first plane including (a) a first straight line that extends in an extending direction of a shaft portion of the sporting gear, and (b) a second straight line showing a ball hitting direction, and (ii) a second plane including (1) a third straight line connecting a neck or shoulder of the user and a ball hitting position of the user and (2) the second straight line showing the ball hitting direction; and

a display that displays an image of the first plane, the second plane and the sporting gear simultaneously,

wherein the first and second planes are visually displayed in a three-dimensional space, and wherein the second plane is determined in three dimensions based upon coordinates of a shoulder of the user.

8. The display according to claim 7, wherein the display displays a trajectory of a swing of the sporting gear.

9. The display device according to claim 7, wherein the first and second planes contact each other.

10. The display device according to claim 7, wherein the first and second planes are planes specified in a static state of the sporting gear.

11. The display device according to claim 7, wherein the inertial sensor includes at least one of an acceleration sensor and a gyroscope inertial sensor.

12. A display method that uses an output of an inertial sensor associated with a golf club held by a user, comprising:

determining with a processor, from the output of the inertial sensor, a first plane including (a) a first straight line that extends in an extending direction of a shaft portion of the golf club, and (b) a second straight line showing a ball hitting direction, and determining a second plane based on a user'"'"'s static position holding the golf club, a ball-hitting position and a ball hitting direction; and

displaying on a screen an image of the first plane, the second plane and the golf club simultaneously,

wherein the first and second planes are visually displayed in a three-dimensional space, and wherein the second plane is determined in three dimensions based upon coordinates of a shoulder of the user.

13. The display device according to claim 12, further comprising displaying a trajectory of a swing of the golf club.

14. The display device according to claim 12, wherein the first and second planes contact each other.

15. The display device according to claim 12, wherein the first plane includes (i) a first straight line that extends in a extending direction of the golf club and (ii) a second straight line showing a ball hitting direction.

16. The display method according to claim 12, wherein the second plane includes (i) a third straight line connecting (a) a neck or shoulder of a subject and (b) a ball hitting position and (ii) the second straight line showing the ball hitting direction.

17. The display method according to claim 12, wherein the first and second planes are planes specified in a static state of the golf club.

18. A display method that uses an output of an inertial sensor associated with a sporting gear held by a user, comprising:

determining with a processor, from the output of the inertial sensor, (i) a first plane including (a) a first straight line that extends in an extending direction of a shaft portion of the sporting gear and (b) a second straight line showing a ball hitting direction of the sporting gear, (ii) a second plane including (1) a third straight line connecting a neck or shoulder of a subject and a ball hitting position and (2) the second straight line; and

displaying on a display an image of the first plane, the second plane and the sporting gear simultaneously,

wherein the first and second planes are visually displayed in a three-dimensional space, and wherein the second plane is determined in three dimensions based upon coordinates of a shoulder of the user.

19. The display method according to claim 18, further comprising determining a trajectory of a swing of the sporting gear based on the output of the inertial sensor;

and

displaying on the display the trajectory of the swing of the sporting gear.

20. The display method according to claim 18, wherein the first and second planes contact each other.

21. The display method according to claim 18, wherein the first and second planes are planes specified in a static state of the sporting gear.

22. The display method according to claim 18, wherein the inertial sensor includes at least any of an acceleration sensor and a gyroscope inertial sensor.