基于肌电信号和加速度信号的腰部振动实验研究

摘要 实验研究振动时汽车座椅对人体腰部肌肉组织的影响.通过计算腰部肌电信号的均方根值来分析腰部肌肉的响应特征，通过分析振动传递比来研究人体腰部组织的振动能量传递特征，最后对振动传递比和肌电信号的均方根值进行统计分析.实验结果表明，在座椅腰部支撑参数为d2(适当支撑)时，人体腰部的振动传递比和肌电信号均方根值都最小，而另外两种座椅腰部支撑参数d1(无支撑)和d3(过度支撑)对腰部的振动传递和肌电信号均方根值有放大作用.实验证实了适当的座椅腰部支撑能够减轻振动对人体腰部的影响程度.
Abstract：A vibration experiment is conducted to study the influence of automobile seat on human lumbar muscle tissue during whole body vibration. Lumbar muscle response is analyzed by calculating root mean square (RMS) of electromyography (EMG) signal， and the vibration energy transmitting characteristic of lumbar tissue is studied by analyzing the vibration transmissibility. At last the vibration transmissibility and EMG RMS of all subjects under different lumbar support conditions are conducted statistically. The experiment result indicates that when lumbar support parameter is d2 (appropriate support)， vibration transmissibility and EMG RMS are minimum， while other two lumbar support parameters d1(no support) and d3 (excessive support) magnify lumbar vibration transmissibility and EMG RMS. The experiment proved that appropriate lumbar support of automobile seat can reduce effect degree of vibration on human lumbar.