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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。
In order to understand the driver’s neck fatigue when driving on a typical prairie road, a field experiment was conducted on the grassland in Inner Mongolia. The surface electromyography (SEMG) of the driver’s sternocleidomastoid muscle was collected with the MP150 multi-channel physiologic recorder and tested. The integral electromyography (IEMG) and median frequency (MF) Study driver’s neck EMG signal. The experimental results show that with the extension of driving range, the driver’s neck IEMG has an upward trend, while MF has a clear downward trend. This shows that driving a driver in a monotonous environment for a long time can trigger a significant neck reaction. Data analysis showed that driver’s neck IEMG and MF reached the limit state in about 50 min.