Systems and methods for processing limb motion
First Claim
1. A system for analyzing the movement of a device associated with a limb, the system comprising:
- at least one accelerometer configured to generate a time series of motion signals indicative of a movement of a device associated with a limb; and
a process module in communication with the at least one accelerometer, the process module comprising;
a filter configured to process the time series of motion signals received from the at least one accelerometer and configured to generate from the time series of motion signals a plurality of filtered signals; and
a comparison module configured to compare the plurality of filtered signals with a plurality of sample signals, wherein the comparison module is further configured to identify, based on said comparison, limb-motion events associated with the movement of the device associated with the limb.
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Abstract
Control systems and methods are disclosed for processing a time series of signals associated with the movement of a device associated with a limb. The time series of motion signals is filtered, such as thorough an autoregressive filter, and compared to stored data sets representing a limb-motion event and/or phase. In certain examples, a plurality of accelerometers generate the time series of motion signals based at least on acceleration measurements in three orthogonal directions and/or planes. The acceleration measurements may relate to the movement of an artificial limb, such as a prosthetic or orthotic device. Upon determining an event and/or phase of limb motion, the control system may trigger an actuator to appropriately adjust one or more prosthetic or orthotic joints.
315 Citations
15 Claims
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1. A system for analyzing the movement of a device associated with a limb, the system comprising:
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at least one accelerometer configured to generate a time series of motion signals indicative of a movement of a device associated with a limb; and a process module in communication with the at least one accelerometer, the process module comprising; a filter configured to process the time series of motion signals received from the at least one accelerometer and configured to generate from the time series of motion signals a plurality of filtered signals; and a comparison module configured to compare the plurality of filtered signals with a plurality of sample signals, wherein the comparison module is further configured to identify, based on said comparison, limb-motion events associated with the movement of the device associated with the limb. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification