有源电极用于表面肌电信号的检测  

Detection of Surface EMG Signal Using Active Electrode

作　　者：何庆华[1] 彭承琳[2] 吴宝明[1] 王禾[1] 

机构地区：[1]第三军医大学大坪医院野战外科研究所五室,重庆400042 [2]重庆大学生物工程学院,重庆400044

出　　处：《生物医学工程学杂志》2003年第3期488-490,共3页Journal of Biomedical Engineering

基　　金：重庆市科委应用基础项目 (682 9)

摘　　要：表面肌电信号的研究对康复医学、运动医学和临床诊断等具有重要意义 ,信号的正确检测是定量分析表面肌电信号的前提。本文探讨了如何减小表面肌电信号检测中可能遇到的噪声及电极单元的设计要点 ,并采用仪用放大器 AD6 2 0设计了双极性的有源电极用于信号检测。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。Research of surface electromyogram(EMG) signal is important in rehabilitation medicine, sport medicine and clinical diagnosis; accurate detection of signal is the base of quantitative analysis of surface EMG signal. In this article were discussed how to reduce possible noise in the detection of surface EMG. Considerations on the design of electrode unit were presented. Instrumentation amplifier AD620 was employed to design a bipolar active electrode for use in surface EMG detection. The experiments showed that active electrode could be used to improve signal/noise ratio, reduce noise and detect surface EMG signal effectively.

关 键 词：有源电极 表面肌电信号 检测 噪声 诊断 

分 类 号：R318.04[医药卫生—生物医学工程]