摘要
针对不同深度肌肉肌电信号检测的电极间距不明确的问题,首先分析了单纤维肌电信号仿真模型中电极间距和肌纤维深度对肌电信号的影响;然后结合尺侧腕伸肌和膈肌肌电信号采集实验,分析电极间距与肌电信号振幅和频谱之间的关系。计算电极间距扩大对肌电信号振幅增长的贡献率,从而确定适合于不同层次肌肉肌电信号检测的阵列电极间距。仿真分析和实验结果均表明电极间距扩大可提高肌电信号的振幅,且用于深层肌肉肌电信号检测的电极较之浅层肌肉需要更大的电极间距。
Aiming at the problem of unclear inter-electrode distance for different depth muscles sEMG signal detection,the effect of inter-electrode distance and muscle fiber depth on sEMG signal in single-fiber sEMG signal simulation model was analyzed firstly.Then,the relationship between the inter-electrode distance and the amplitude and frequency spectrum of the sEMG signal was analyzed by combining with the sEMG signal acquisition experiment of the extensor carpi ulnaris and diaphragm muscles.The contribution rate of the increase of inter-electrode distance to the increase of sEMG signal amplitude was calculated,and the inter-electrode distance suitable for different muscle levels of sEMG signal detection was determined.Simulation analysis and experimental results show that the increase of inter-electrode can increase the sEMG signal amplitude,and the inter-electrode distance of deeper muscle sEMG signal detection is larger than that of superficial muscle.
作者
于祥
赵翠莲
Yu Xiang;Zhao Cuilian(Shanghai Key Laboratory of Intelligent Manufacturing and Robotics,School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200444,China)
出处
《电子测量技术》
北大核心
2021年第11期16-21,共6页
Electronic Measurement Technology
关键词
多通道阵列电极
表面肌电
肌肉深度
肌电信号仿真模型
电极间距
时频域矩
multi-channel array electrode
surface electromyography
muscle depth
EMG signal simulation model
interelectrode distance
time-frequency domain
