為了減少傳統(tǒng)Ag-Agcl檢測(cè)電極在提取有效SEMG信號(hào)中可能遇到的干擾與噪聲，設(shè)計(jì)了一種新型Ag-Agcl檢測(cè)電極。與傳統(tǒng)Ag-Agcl檢測(cè)電極相比較，該系統(tǒng)是由電極、前置放大電路、濾波電路和陷波電路進(jìn)行密封并加以屏蔽層保護(hù)后所組成的有源SEMG檢測(cè)電極。該檢測(cè)電極極大地縮短了電極連線，可以用來(lái)提取有效的SEMG信號(hào)。試驗(yàn)結(jié)果表明，采用該SEMG檢測(cè)電極可以進(jìn)一步提高信噪比，減少噪聲，提取到有效的表面肌電信號(hào)。

Abstract:

?In order to reduce the noise and interference that the traditional Ag - Agcl surface electrode may meet in extracting the effective SEMG signal, this paper reseached and designed a new type of Ag-Agcl detection electrode. Comparing with the traditional Ag-Agcl detection electrode ,this system was the active detection electrode which was cornposed of the electrode, the preamplifier circuit, the filter circuits and the trap circuit together and protected by the shielding loyer. The detection electrode greatly shortened the electrode connection and could be used to extract the effective SEMG signal.The Experimental result shows that the SEMG detection electrode can further improve SNR, reduce the noise and get effective surface electromyographic signal.