Method and apparatus for estimating a motion parameter
First Claim
1. A system for estimating motion parameters corresponding to a user, the system comprising:
- an inertial sensor operable to couple with the user for generation of signals corresponding to user motion; and
a processing system in communication with the inertial sensor, the processing system operable to—
utilize a first inertial sensor signal from the inertial sensor to estimate a first user speed parameter and a first user cadence parameter,at least once, generate a user-specific speed-to-cadence motion model to correlate user speed to user cadence using at least the first user speed parameter and first user cadence parameter,utilize a second inertial sensor signal from the inertial sensor to estimate a second user cadence parameter, andat least once, utilize the motion model and the second user cadence parameter to estimate a second user speed parameter when the second user speed parameter cannot be directly estimated using the second inertial sensor signal.
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Abstract
A system for estimating motion parameters corresponding to a user. The system may generally include a receiver operable to receive a signal from an external source, an inertial sensor operable to be coupled with the user and arbitrarily oriented relative to the direction of user motion for generation of a signal corresponding to user motion, and a processing system in communication with the receiver and inertial sensor. The processing system can be operable to utilize the receiver signal to estimate a first parameter corresponding to a first motion parameter type, utilize the inertial sensor signal to estimate a second parameter corresponding to a second motion parameter type, generate a user-specific motion model to correlate the first parameter type and second parameter type using at least the first and second estimated parameters, utilize the inertial sensor signal to estimate a third parameter corresponding to the second parameter type, and utilize the motion model and the third parameter to estimate a fourth parameter corresponding to the first parameter type independent of the receiver signal.
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Citations
14 Claims
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1. A system for estimating motion parameters corresponding to a user, the system comprising:
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an inertial sensor operable to couple with the user for generation of signals corresponding to user motion; and a processing system in communication with the inertial sensor, the processing system operable to— utilize a first inertial sensor signal from the inertial sensor to estimate a first user speed parameter and a first user cadence parameter, at least once, generate a user-specific speed-to-cadence motion model to correlate user speed to user cadence using at least the first user speed parameter and first user cadence parameter, utilize a second inertial sensor signal from the inertial sensor to estimate a second user cadence parameter, and at least once, utilize the motion model and the second user cadence parameter to estimate a second user speed parameter when the second user speed parameter cannot be directly estimated using the second inertial sensor signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for estimating motion parameters corresponding to a user, the method comprising:
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receiving, with a processing system, a first signal from an inertial sensor to estimate a first user speed parameter and a first user cadence parameter; at least once, generating with the processing system a user-specific speed-to-cadence motion model to correlate user speed to user cadence using at least the first user speed parameter and first user cadence parameter; storing the user-specific speed-to-cadence motion model in a computer-readable memory associated with the processing system; receiving, with the processing system, a second signal from the inertial sensor to estimate a second user cadence parameter; at least once, with the processing system, utilize the motion model and the second user cadence parameter to estimate a second user speed parameter when the second user speed parameter cannot be directly estimated using the second inertial sensor signal, and presenting the second user speed parameter to the user. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification