草原公路长时程行车时驾驶人的脑电特征分析

草原公路具有景观单调,行车视距大,平、纵曲线设置不合理,交通流量小等特征,易引起驾驶疲劳,诱发交通事故。选取草原公路进行模拟驾驶,应用MP150多通道生理信号采集仪,采集12名司机4 h模拟驾驶过程中的脑电(EEG)数据,探寻模拟驾驶条件下驾驶过程中EEG相关指标的特征。结果表明:β波及(α+θ)/β这两项指标能较好地反应司机脑电的变化过程;当行驶到20 min时,驾驶疲劳第一次出现;当行驶到60 min时疲劳第二次出现;当行驶到90 min时疲劳第三次出现,当行驶到120 min时疲劳第四次出现;男司机行驶到170 min时和女司机行驶到160 min时驾驶疲劳增加明显,此时,司机应停止驾驶任务,进行调整休息;男、女司机的驾驶疲劳具有累计效应,且驾驶疲劳的累计变化量与驾驶时间具有较强的相关性。

Characteristics of EEG in Grassland Driving during Long Distance Driving

The landscape of prairie highway is single, driving range, flat, vertical curve is unreasonable, the traffic flow characteristics of small, easy to cause fatigue and cause accidents.In this driving environment. The driving test bench simulation, selection of prairie highway simulation driving, application of MP150 multi-channel physiological signal acquisition instrument, 12 drivers collected 4 hours driving simulation process of EEG data, the characteristics of relevant indicators of driving process to explore driving simulation under the condition of EEG. The results showed that beta And (alpha + theta) / beta the two indicators reflect the driver EEG process better; when traveling to 20min, driving fatigue began to appear; when traveling to 60min when fatigue appeared second times; when traveling to 90min when fatigue appeared third times, when traveling to 120min when fatigue appeared fourth times. When the driver driving to 170min and when the driver fatigue driving to 160min increased significantly, in this process, the drivers regulating effect on driving fatigue is reduced. Should stop driving task, adjust the rest; male, female driver fatigue driving is accumulated, and driving fatigue tired There is a strong correlation between the amount of change and the driving time.