表面肌电信号采集系统设计

Acquisition System Design for Surface EMG

目前国内外的表面肌电采集系统价格高昂,体积较大,不便携带,根据临床上方便携带的要求设计了一种结构简单低成本的小型便携表面肌电信号采集系统。系统包括获取表面肌电信号的表面电极,仪表放大器(INA128),滤波与二级放大,电压抬升,A/D转换等部分。测试结果表明,采集电路可以采集到良好的表面肌电信号,并且可供研究分析人体的动作模式。

The surface EMG acquisition system is costly and bulky nowadays , which does not meet the academic and clinical needs .According to the academic and clinical demand , a small portable acquisition system with simple structure and low cost is designed to achieve the surface EMG acquisition .The system includes surface EMG electrodes , instrumentation amplifier （ INA128 ） , filter, voltage lifting circuit and A/D converter .The test results show that the acquisition system can acquire the surface EMG , which is available for research and analysis of human movement patterns .