基于表面肌电信号的高原公路驾驶员颈部疲劳试验分析

为了解高原公路驾驶员颈部疲劳状况,寻求减轻驾驶员疲劳途径。选取新疆帕米尔高原典型路段进行实驾试验,通过生物反馈仪获取受测驾驶员颈部肌电数据,利用时域与频域分析方法选取积分肌电值(IEMG)与中值频率(MF)作为评价指标,研究高原公路驾驶员颈部肌肉IEMG与MF在连续驾驶时间、海拔作用下的疲劳特性。研究表明:连续驾驶时间、海拔是影响驾驶员IEMG、MF的主要因素。随着驾驶时间增长与海拔逐渐升高,驾驶员IEMG有上升趋势,而MF有下降趋势,表明高原公路驾驶员从低海拔到高海拔路段长时间连续驾驶车辆导致颈部疲劳感增加。通过对比不同行车经历驾驶员,发现经常出入高原公路驾驶员的颈部疲劳度与自我缓解能力要优于首次进入高原公路行驶车辆的驾驶员。

Analysis of the fatigue of drivers' neck in plateau highway based on SEMG

In order to understand driver''s fatigue condition in plateau roads and look for way to relief driver''s fatigue. Selected typical plateau road in Xinjiang Pamirs and conducted road test. Made use of time and frequency domain analysis selected IEMG and MF as evaluation index to research driver''s neck muscle IEMG and MF under the influence of driving time and altitude. The results show that the driving time and altitude was the main factors that had influenced driver''s IEMG and MF. IEMG has a tendency to rise and has a significant decline in MF with an increase in driving time and altitude, that is to say, driver who had long time to drive in plateau from low altitude to high altitude led to increase fatigue in driver''s neck. By comparing different driving experience divers, found that those drivers who often driving in plateau had more better the ability to relief fatigue than drivers who first to drive in plateau.