Swing analyzing device, swing analyzing program, and recording medium

• US 9,403,057 B2
• Filed: 06/05/2012
• Issued: 08/02/2016
• 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
• Primary Examiner(s): SKAARUP, JASON M
• Application Number:
  US13/488,953
• Publication Number:
  US 20120316004A1
• Time in Patent Office: 1,519 Days
• Field of Search: 473/212, 473/221, 473/223
• US Class Current: 1/1
• 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 that detects a physical quantity generated by a swing, wherein the motion sensor is an angular velocity sensor that detects angular velocities generated about a plurality of axes by the swing;

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

a motion detecting unit that 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;

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

a display processing unit that 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, wherein;

the motion detecting unit includes an impact detecting unit and an angular velocity calculating unit,

the impact detecting unit sets a timing of an impact of the swing using the acquired detection data, and sets the motion of the swing of the swing candidate data based on the timing of the impact, and

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

2. 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.

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

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 a time of the down swing is shorter than a time of the back swing in one piece of the swing candidate data.

5. The swing analyzing device according to claim 2, 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.

6. The swing analyzing device according to claim 1, 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.

7. The swing analyzing device according to claim 1, 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 a point in time.

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

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

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

the motion detecting unit sets 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.

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

the motion detecting unit sets 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.

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

the motion detecting unit sets 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.

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

the motion detecting unit sets 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.

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

the motion detecting unit sets

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.

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

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

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

the swing is a golf swing.

16. A swing analyzing computer program stored in a non-transitory computer readable medium and executed by a processor, the swing analyzing computer program comprising instructions for:

acquiring, from a motion sensor, detection data of a physical quantity generated by a swing, wherein the motion sensor is an angular velocity sensor that detects angular velocities generated about a plurality of axes by the swing;

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

selecting true swing data from the swing candidate data based on determination conditions associated with the swing;

calculating the sum of the magnitudes of the angular velocities generated about the plurality of respective axes using the acquired detection data;

calculating, based on the motion of the swing detected, a time of the motion of the swing;

setting a timing of an impact in the swing based on the sum of the magnitudes of the angular velocities; and

displaying the time of the motion of the swing and the motion of the swing.

17. A swing analyzing method comprising:

acquiring, from a motion sensor, detection data of a physical quantity generated by a swing, wherein the motion sensor is an angular velocity sensor that detects angular velocities generated about a plurality of axes by the swing;

detecting, by a swing analyzing device, a motion of the swing using the detection data acquired;

extracting, by the swing analyzing device, data from which the motion of the swing is detected as swing candidate data;

selecting, by the swing analyzing device, true swing data from the swing candidate data based on determination conditions associated with the swing;

calculating, by the swing analyzing device, the sum of the magnitudes of the angular velocities generated about the plurality of respective axes using the acquired detection data;

calculating, based on the motion of the swing detected, a time of the motion of the swing;

setting, by the swing analyzing device, a timing of an impact in the swing based on the sum of the magnitudes of the angular velocities; and

displaying the time of the motion of the swing and the motion of the swing.