Speed measuring device and method
First Claim
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1. A device for measuring the speed of a user'"'"'s motion in a first direction, comprising:
- an accelerometer including a force transducer;
a processor communicating with said accelerometer;
a support carrying said accelerometer along the path of said user'"'"'s motion;
an output device communication with said processor; and
a power source supplying power to said processor such that as said accelerometer is carried by said support along the path of said user'"'"'s motion, said accelerometer continuously measures the centripetal force exerted on the force transducer throughout the user'"'"'s motion including during an impact, and generates a signal corresponding to the centripetal force, and said processor samples said signal from said accelerometer including during said impact, selects a centripetal force measurement prior to said impact, calculates the speed of said user'"'"'s motion using said selected centripetal force measurement, and communicates a speed signal to said output device.
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Abstract
A velocity measuring device is mounted to a support, optionally a wearable support such as a glove, watch, wrist or arm band, or the like. Alternatively, the support is a sports club or removably attaches to a sports club. The velocity measuring device includes a power supply, a velocimeter or accelerometer, and an output device for visually, aurally, or electrically outputting the measured velocity.
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Citations
15 Claims
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1. A device for measuring the speed of a user'"'"'s motion in a first direction, comprising:
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an accelerometer including a force transducer; a processor communicating with said accelerometer; a support carrying said accelerometer along the path of said user'"'"'s motion; an output device communication with said processor; and a power source supplying power to said processor such that as said accelerometer is carried by said support along the path of said user'"'"'s motion, said accelerometer continuously measures the centripetal force exerted on the force transducer throughout the user'"'"'s motion including during an impact, and generates a signal corresponding to the centripetal force, and said processor samples said signal from said accelerometer including during said impact, selects a centripetal force measurement prior to said impact, calculates the speed of said user'"'"'s motion using said selected centripetal force measurement, and communicates a speed signal to said output device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for measuring the speed of a user'"'"'s motion in a first direction along an arcuate path with a radius of motion, comprising:
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providing an accelerometer; providing a processor communicating with said accelerometer; providing an output device communicating with said processor; securing said accelerometer to travel along the path of said user'"'"'s motion; carrying said accelerometer along the path of said user'"'"'s motion, the accelerometer measuring the centripetal force exerted on said accelerometer; said processor sampling the centripetal force measurements from said accelerometer throughout the user'"'"'s motion including during an impact; said processor receiving an input radius corresponding to said radius of motion; wherein said processor uses the sampled centripetal force measurements to determine when said impact occurred and select a centripetal force measurement prior to said impact, calculates the speed of said user'"'"'s motion using said selected centripetal force measurement and said radius, and outputs a signal representing said speed to said output device. - View Dependent Claims (14, 15)
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Specification