CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean Patent Application No. 10-2018-0001218, filed on Jan. 4, 2018, and Korean Patent Application No. 10-2018-0143610, filed on Nov. 20, 2018, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND

1. Field of the Invention

The present invention relates to a system and a method for volitional electromyography (vEMG) signal detection from an EMG signal when functional electrical stimulation (FES) is applied.

2. Discussion of Related Art

Detection of a volitional electromyography (vEMG) signal according to the related art requires a blanking circuit as an additional device, a technique for processing an EMG signal has a limitation when a functional electrical stimulation (FES) is applied, and there is a problem in that the detection becomes unstable in a state in which dynamic FES is applied.

SUMMARY OF THE INVENTION

The present invention is directed to a system and a method for volitional electromyography (vEMG) signal detection, which are capable of improving performance of vEMG signal detection irrespective of additional devices, such as a blanking circuit and the like, and capable of robustly detecting the vEMG signal even in a case in which a dynamic functional electrical stimulation (FES) is applied.

According to an aspect of the present invention, there is provided a system for vEMG signal detection, the system including a receiver configured to receive data from an EMG electrode when FES is applied, a memory configured to store a program for detecting a vEMG signal using the received data, and a processor configured to execute the program, wherein the processor may cut the data received from the EMG electrode disposed at a predetermined position, calculate a difference between data for previous FES and data for current FES, and detect the vEMG signal using the calculated difference.

According to another aspect of the present invention, there is provided a method for vEMG signal detection, the method comprising the steps of: (a) receiving data from an EMG electrode attached at a predetermined location, (b) cutting the received data into a predetermined unit and storing the cut data in a buffer, (c) calculating a difference between the data obtained for a previous stimulation and the data obtained for a current stimulation with respect to the data cut into the predetermined unit, and (d) detecting a vEMG signal using the calculated difference obtained in the step (c).

According to still another aspect of the present invention, there is provided a system for vEMG signal detection, the system including a FES electrode configured to apply FES, an EMG electrode attached to a skin surface of a specific muscle to which the FES is applied, and a detector configured to cut data received from a position at which the EMG electrode is attached, calculate a difference between data for previous FES and data for current FES, and detect a vEMG signal.

