摘要
目的:准确地检测表面肌电信号。方法:研究减小表面肌电信号检测中的噪声方法,探讨如何采用差分结构放大器、有源电极、滤波器等方法设计电极单元,以及电极形状和正确的放置方法。结果:采用仪用放大器AD620设计了双极性的有源电极成功用于表面肌电信号检测。结论:实验表明,采用有源电极可以提高信噪比,减小噪声,有效地提取出表面肌电信号。
AIM： To detect surface electromyogram （EMG） signal accurately. METHODS： How to reduce noise in the detection of surface EMG signal was discussed. It has been explored to design an electrode unit by using methods of differential amplification, active electrode, filter and so on , and to investigate the electrode shape and the right placing method. RESULTS： The instrumentation amplifier AD620 was adopted to design a bipolar active electrode, which has been successfully used in the surface EMG detection. CONCLUSION： Experiments show that using active electrode can improve ratio of signal and noise, reduce noise and detect surface EMG signal effectively.
出处
《中国临床康复》
CSCD
北大核心
2006年第1期190-192,共3页
Chinese Journal of Clinical Rehabilitation
基金
重庆市科委应用基础项目(6829)~~
