草原道路驾驶员个性心理特征对疲劳的影响

Effects of personality and psychological characteristics on fatigue of drivers on grassland roads

为科学预防疲劳驾驶,采用模拟实验进行草原道路长时程行车,运用MP150多通道生理信号采集仪,采集行车过程中驾驶员的脑电(EEG)信号,定量分析急躁型、谨慎型和常规型驾驶员在不同行车时段的疲劳特性。结果表明:α波、β波这两项指标对反应急躁型驾驶员疲劳状态最为敏感;θ波在评价谨慎型驾驶员疲劳状态时最敏感;在30 min~40 min驾驶员疲劳反应初次显现,120 min~140 min为自我调整临界点,此后自我调节效果不明显;在驾驶任务中,急躁型驾驶员最先出现疲劳,随着时间的累积,谨慎型驾驶员的疲劳程度远高于其他两类驾驶员,说明这类驾驶员缺少持久性,不宜长时程驾驶。

To scientifically prevent fatigue driving,a simulation experiment was conducted on long-term driving on grassland roads.The MP150 multi-channel physiological signal collector was used to collect the drivers'electroencephalogram(EEG)signals during driving,and the fatigue characteristics of impatient,cautious and conventional drivers at different driving times were quanti-tatively analyzed.The results show thatαwave andβwave are the most sensitive indicators for the fatigue state of impatient driv-ers;wave is the most sensitive in evaluating the fatigue state of cautious drivers;the driver's fatigue reaction first appears at 30 min-40 min,and 20 min-140 min is the critical point for self-adjustment,after which the self-regulation effect is not obvious.In the driving task,the impatient driver is the first to feel fatigued.As time went on,the fatigue level of the cautious driver is much higher than that of the other two types of drivers,indicating that this type of driver lacks persistence and is not suitable for long-term driving.