초록 ▼

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 eve

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.

대표청구항 ▼

What is claimed is: 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

What is claimed is: 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. 2. The system of claim 1, wherein the at least one accelerometer comprises a gyroscope. 3. The system of claim 1, wherein the time series of motion signals comprises at least one of forward, inward and downward linear acceleration signals. 4. The system of claim 1, wherein the filter comprises an autoregressive filter. 5. The system of claim 4, wherein the filter comprises a Kalman filter. 6. The system of claim 1, further comprising a database configured store the plurality of sample signals. 7. The system of claim 1, wherein the process module comprises a machine executable software module. 8. The system of claim 1, wherein the limb is an artificial limb. 9. The system of claim 8, wherein the artificial limb comprises one of a prosthetic device and an orthotic device. 10. A prosthetic device being movable about a joint location and comprising the system of claim 1. 11. The prosthetic device of claim 10, wherein the comparison module is further configured to generate a control signal for adjusting the prosthetic device. 12. The prosthetic device of claim 11, further comprising an actuator configured to control movement of the prosthetic device according to the control signal. 13. The prosthetic device of claim 12, wherein the joint location is an ankle-joint location. 14. The system of claim 8, wherein the at least one accelerometer is attached to the artificial limb. 15. The system of claim 1, wherein the limb-motion events comprise toe-off and heel-strike events.