APPRATUS FOR DETERMINING A CHANGE IN HAND MOTION USING SURFACE ELECTROMYOGRAM SIGNALS AND METHOD THEREOF

摘要

The present invention relates to an apparatus and a method for determining hand motion change using the surface electromyogram signal. Hand motion change determination method using the surface EMG signal according to the present invention comprises the steps of acquiring the surface EMG signals from the surface EMG sensors attached to the inner and outer wrist respectively, extracting raw data; Removing a DC offset using the non-operation period of the raw data; Extracting feature factors for each surface EMG signal data from which the DC offset is removed, and calculating first waveform lengths for the inside of the wrist and second waveform lengths for the outside of the wrist; Calculating a first threshold value for the inside of the wrist and a second threshold value for the outside of the wrist by using a result of a smoothing filter; And comparing the first waveform length with the first threshold and the second threshold to determine a time point at which a change in the hand motion occurs. Thus, according to the present invention, by using the surface EMG signal obtained from the surface EMG sensor attached to the wrist muscle can determine in real time the fist release time as well as remove the noise data contained in the surface EMG signal There is an effect that can accurately determine the point of change of the hand motion.