METHOD AND APPARATUS FOR ESTIMATING A MOTION PARAMETER
First Claim
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1. A method of estimating a motion parameter corresponding to a subject element, the method comprising:
- acquiring an acceleration measurement;
generating a motion parameter metric utilizing the acceleration measurement; and
estimating the motion parameter using the motion parameter metric.
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Abstract
A method and apparatus for estimating a motion parameter corresponding to a subject element employs one or more accelerometers operable to measure accelerations and a processing system operable to generate a motion parameter metric utilizing the acceleration measurements and estimate the motion parameter using the motion parameter metric.
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Citations
27 Claims
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1. A method of estimating a motion parameter corresponding to a subject element, the method comprising:
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acquiring an acceleration measurement; generating a motion parameter metric utilizing the acceleration measurement; and estimating the motion parameter using the motion parameter metric. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus operable to estimate a motion parameter corresponding to a subject element, the apparatus comprising:
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an accelerometer operable to provide a signal corresponding to an acceleration measurement; and a processing system coupled with the accelerometer and operable to; acquire the signal corresponding to the acceleration measurement, generate a motion parameter metric utilizing the acceleration measurement, and estimate the motion parameter using the motion parameter metric and a statistical model. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An apparatus operable to estimate a motion parameter corresponding to a subject element, the apparatus comprising:
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a plurality of accelerometers each operable to provide a signal corresponding to an acceleration measurement, at least two of the accelerometers being adapted to measure accelerations in two directions separated by an angle greater than zero degrees; and a processing system coupled with one or more of the accelerometers, the processing system operable to; calculate a stride duration using at least one of the acceleration measurements, low-pass filter the signals corresponding to the acceleration measurements utilizing a cut-off frequency between about 0.5 Hz and 10 Hz, calculate an acceleration magnitude using the acceleration measurements corresponding to the filtered signals, generate a motion parameter metric utilizing the stride duration and acceleration magnitude, and estimate the motion parameter using the motion parameter metric and a statistical regression model. - View Dependent Claims (25, 26, 27)
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Specification