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表面肌电信号测试中工频干扰的抑制
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表面肌电信号测试中工频干扰的抑制
介绍了一种表面肌电信号( EMG) 测试调理电路和信号处理的方法。表面EMG测量中最难处理的问题之一是工频(50Hz) 干扰,它处在有效的肌电信号频带之中。针对表面EMG的测量特点设计了一种信号调理电路,使肌电信号和工频信号并行单独处理,避免了不加区分地采用工频陷波器,这一设计思想在实际的肌电信号检测时取得了较好的实验结果。
A surface electromyography ( EMG) detection and processing circuit is discussed. The surface EMGis usually disturbed by power frequency noise. In that cases , it is a problem , because the surface EMGis confused with power fre2 quency noise. A processing circuit for the measurement of surface EMGis designed by using a parallel structure respec2 tively for EMG signal processing and power frequency noise processing. It can be avoided that a 50Hz trap filter abused.
The experimentation proved the developed circuit was effective.
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ebony86
2014-12-02
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