US 7,811,333 B2 · Systems and methods for processing limb motion

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.

Claims15

Dependent claims

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.

3 more elements

Dependencies are inferred from the claim text.

Systems and methods for processing limb motion

Life of this patent

Systems and methods for processing limb motion

Life of this patent

Abstract

Claims15