The Research of Power Frequency Interference in the Acquisition System of SEMG

Hanqing Zhao, Bo You, Yi Liu, Shoutong Tao
2013 International Journal of Signal Processing, Image Processing and Pattern Recognition  
The power frequency in 50Hz and its harmonic interference is one of the main noise sources during the acquisition process of surface electromyogram signals (SEMG), how to restrain interference power frequency and its harmonics effectively is one of the important issues on the EMG preprocessing. In this paper, we will determine the power frequency interference and its frequency of the harmonic through the signal acquisition, make the crosscorrelation by the constructor and the collected data,
more » ... collected data, and determine its magnitude. We can draw a conclusion that this method can effectively restrain power frequency interference of EMG during the acquisition process through the comparison of the power spectrum of denoising before and after. The Experiments show that this method can effectively separate the power frequency interference during the acquisition process, and is suitable for the real-time processing of EMG.
doi:10.14257/ijsip.2013.6.5.08 fatcat:vcp77g3nengrtgsmwy3rltwmsi