中文摘要：

为了解驾驶员在典型的草原公路上行车时的颈部疲劳状况,在内蒙古草原公路上进行实驾试验。用MP150多导生理记录仪采集驾驶员颈部胸锁乳突肌的表面肌电信号（SEMG）,并进行测试分析,以积分肌电值（IEMG）与中值频率（MF）为评价指标,研究驾驶员颈部肌电信号。试验结果表明：随着驾驶路程的延长驾驶员颈部IEMG有上升趋势,而MF有明显下降趋势。这说明驾驶员长时间在单调环境中驾驶能够引发颈部明显的疲劳反应。通过数据分析发现,驾驶员颈部IEMG和MF大约50 min时达到极限状态。

英文摘要：

For the sake of understanding the driver＇s neck fatigue status driving on typical grassland highway,real driving tests were carried out on a certain Inner Mongolia grassland highway. Data on SEMG of driver＇s neck sternocleidomastoid were collected using an MP150 Multi physiological recorder,and tested and analyzed. IEMG and MF were taken as the evaluation indexes for studying neck electromyography of drivers. The test results show that IEMG has a tendency to rise and has a significant decline in MF with an increase in driving distance,that is to say,long time driving in a drab environment can cause neck fatigue reaction obviously. It was found through data analysis,that the driver＇s neck IEMG and MF reached the limit state in about 50 min. The Conclusions can provide certain theoretical support for further research of driver fatigue state.