一种消除表面肌电信号中工频干扰的方法

A Method of Decreasing the Power Frequency Noise from SEMG

50Hz工频干扰是表面肌电信号的主要干扰源之一,消除工频干扰是表面肌电信号处理中的一项重要技术。该文将独立成分分析方法引入表面肌电信号处理领域,采用基于负熵判据的Fas-tICA方法消除表面肌电信号中的50Hz工频噪声。实验表明,该方法消除50Hz工频噪声效果显著,并且不会对表面肌电信号中除50Hz以外的其它频率成分造成影响。

50Hz power frequency noise is one of the main disturbance sources, and remove power frequency signal from SEMG has become an important technology in the SEMG signal processing. The paper brings ICA into the do-main of SEMG signal processing, and uses neg - entropy - based FastICA method to decrease the 50Hz power frequency noise contained in obtained SEMG. The experiments indicated that, the method not only decreased the power frequency noise effectively, but also had no effects on the other frequency components of SEMG with the exception of 50Hz frequency.