中文摘要：

内蒙古草原具有线形特殊,景观单调等特点,长时间在草原公路行车时极易引起肌肉疲劳.通过检测驾驶员肩部斜方肌的表面肌电信号,使用MPF指标并结合主观问卷调查评估在草原公路驾驶过程中的驾驶员肩部肌肉疲劳.结果表明6名驾驶员的MPF随着驾驶时间延长呈现波动下降趋势,但仅有17％的驾驶员主观感觉到肩部疲劳.实验结束后驾驶员肩部肌肉疲劳累积加重.

英文摘要：

Grassland of Inner Mongolia has a special line, monotonous landscape etc, for a long time in theprairie highway driving easy to cause muscle fatigue. In this paper, by testing the SEMG of driver＇s trapezius mus-cle of the the shoulder, using frequency domain analysis method combined with the subjective questionnaire assess-ment in the process of grassland highway driving. Results show that the MPF of six drivers show a fluctuations de-crease with driving time, but only 17% of drivers felt shoulder fatigue. At the end of the experiment the subjectswith the shoulder muscle fatigue have a increase.