Motion Analysis Device for Sports
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Abstract
There is described a portable wrist worn device for determining information about the movement of a human body when swimming. The device comprises a waterproof housing containing: an accelerometer operable to generate an acceleration signal; a processor operable to process the acceleration signal so as to generate one or more metrics relating to the movement of the human body; and a means for feedback of the one or more metrics to the user. The accelerometer may be operable to generate an acceleration signal along an axis parallel to the proximo-distal axis of the user'"'"'s arm in use and/or the accelerometer may be operable to generate an acceleration signal along an axis parallel to the dorsal-palmar axis of the user'"'"'s hand in use. The device may also be used in sports other than swimming.
52 Citations
23 Claims
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1-8. -8. (canceled)
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9. A wrist worn device for determining information about the movement of a human body when swimming, the device comprising a waterproof housing containing:
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one or more accelerometers operable to generate both a first acceleration signal along an axis parallel to the proximo-distal axis of the user'"'"'s arm in use and a second acceleration signal along an axis parallel to the dorsal-palmar axis of the user'"'"'s arm in use; a processor operable to process the first acceleration signal so as to generate a first value of a swimming metric relating to movement of the human body and operable to process the second acceleration signal so as to generate a second value of said swimming metric, the processor further being operable to compare the first and second values of said swimming metric and to select the greater of the two; and a means for feedback of the selected value of said swimming metric to the user; wherein said swimming metric comprises one of a lap count and a stroke count. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of determining information about the movement of a human body when swimming, the method comprising the steps of:
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generating a first acceleration signal along an axis parallel to the proximo-distal axis of a swimmer'"'"'s arm; generating a second acceleration signal along an axis parallel to the dorsal-palmar axis of the swimmer'"'"'s arm; processing the first acceleration signal so as to generate a first value of a swimming metric relating to the movement of the human body; processing the second acceleration signal so as to generate a second value of said swimming metric; comparing the first and second values of said swimming metric so as to select the greater of the two; and outputting the selected value of said swimming metric to the user; wherein said swimming metric comprises one of a lap count and a stroke count.
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Specification