SWING ANALYZING DEVICE, SWING ANALYZING PROGRAM, AND RECORDING MEDIUM

• US 20120316004A1
• Filed: 06/05/2012
• Published: 12/13/2012
• Est. Priority Date: 06/09/2011
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: SHIBUYA, Kazuhiro
• Granted Patent: US 9,403,057 B2
• Time in Patent Office: Days
• US Class Current: 473/212
• 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 69/3632 Clubs or attachments on clubs, e.g. for measuring, aligning A63B69/3614 takes precedence; clubs for swinging exercises in general A63B15/00
• CPC Class Codes: G06F 18/00 Pattern recognition
• CPC Class Codes: G06F 2218/14 by matching peak patterns
• CPC Class Codes: G06V 40/23 Recognition of whole body movements, e.g. for sport training
• CPC Class Codes: G09B 19/0038 Sports

Abstract

A swing analyzing device includes at least a motion sensor, a data acquiring unit, a motion detecting unit, and a swing data determining unit. The data acquiring unit acquires detection data of the motion sensor. The motion detecting unit uses the acquired detection data to detect a motion of a swing and extracts, as swing candidate data, data from which the motion of the swing is detected. The swing data determining unit selects true swing data from the swing candidate data based on determination conditions associated with the swing.

Claims

1. A swing analyzing device comprising:

a motion sensor which detects a physical quantity generated by a swing;

a data acquiring unit which acquires detection data of the motion sensor;

a motion detecting unit which detects a motion of the swing using the acquired detection data and extracts, as swing candidate data, data from which the motion of the swing is detected; and

a swing data determining unit which selects true swing data from the swing candidate data based on determination conditions associated with the swing.

2. The swing analyzing device according to claim 1, wherein

the motion detecting unit includes an impact detecting unit which detects a timing of an impact of the swing using the acquired detection data, and detects the motion of the swing of the swing candidate data on the basis of the timing of the impact.

3. The swing analyzing device according to claim 1, wherein

the motion of the swing includes at least one motion of back swing, top, and down swing.

4. The swing analyzing device according to claim 2, wherein

the swing data determining unit uses, as one of the determination conditions, a condition that the number of timings of the impacts is one in one piece of the swing candidate data.

5. The swing analyzing device according to claim 3, wherein

the swing data determining unit uses, as one of the determination conditions, a condition that a time of the down swing is shorter than a time of the back swing in one piece of the swing candidate data.

6. The swing analyzing device according to claim 3, wherein

the swing data determining unit uses, as one of the determination conditions, a condition that a value obtained by dividing a time of the top by a time from the start of the swing to the end of the swing of the swing candidate data is smaller than a first threshold value in one piece of the swing candidate data.

7. The swing analyzing device according to claim 1, wherein

the motion sensor is an angular velocity sensor which detects angular velocities generated about a plurality of axes by the swing, and

the motion detecting unit includes an angular velocity calculating unit which calculates the sum of the magnitudes of the angular velocities generated about the plurality of respective axes using the acquired detection data.

8. The swing analyzing device according to claim 7, wherein

the motion detecting unit uses the sum of the magnitudes of the angular velocities to detect a timing of an impact in the swing.

9. The swing analyzing device according to claim 7, wherein

the motion detecting unit further includes a differential calculating unit which differentiates the sum of the magnitudes of the angular velocities with respect to time.

10. The swing analyzing device according to claim 9, wherein

the motion detecting unit detects a portion where a positive peak and a negative peak successively appear in the differential values, and detects, between the positive peak and the negative peak, the timing of the prior peak as the timing of an impact.

11. The swing analyzing device according to claim 8, wherein

the motion detecting unit detects a timing at which the sum of the magnitudes of the angular velocities is a local minimum before the impact as a timing of top of the swing.

12. The swing analyzing device according to claim 11, wherein

the motion detecting unit detects a timing at which the sum of the magnitudes of the angular velocities is a second threshold value or less before the top as a timing of start of the swing.

13. The swing analyzing device according to claim 8, wherein

the motion detecting unit detects a timing at which the sum of the magnitudes of the angular velocities is a local minimum after the impact as a timing of finish of the swing.

14. The swing analyzing device according to claim 8, wherein

the motion detecting unit detects a first timing at which the sum of the magnitudes of the angular velocities is a third threshold value or less after the impact as a timing of finish of the swing.

15. The swing analyzing device according to claim 12, wherein

the motion detecting unit specifies

an interval from the timing of the start of the swing to the timing of the top as a back-swing interval, and

an interval from the timing of the top to the timing of the impact as a down-swing interval.

16. The swing analyzing device according to claim 7, wherein

the angular velocity sensor is mountable on at least one of a user'"'"'s hand, a glove, and swing equipment.

17. The swing analyzing device according to claim 1, further comprising a display processing unit which calculates, based on the motion of the swing detected by the motion detecting unit, a time of the motion of the swing and displays a calculation result on a screen.

18. The swing analyzing device according to claim 1, wherein

the swing is a golf swing.

19. A swing analyzing program causing a computer to function as:

a data acquiring unit which acquires, from a motion sensor, detection data of a physical quantity generated by a swing;

a motion detecting unit which detects a motion of the swing using the acquired detection data and extracts, as swing candidate data, data from which the motion of the swing is detected; and

a swing data determining unit which selects true swing data from the swing candidate data based on determination conditions associated with the swing.

20. A recording medium on which the swing analyzing program according to claim 19 is recorded.