沙漠道路曲线对非专职驾驶员心率的影响

Influence of desert road curve on non-professional drivers' heart rate

为合理确定道路曲线,确保沙漠公路行车安全,利用多导生理记录仪研究实驾试验中沙漠道路曲线对非专职驾驶员心率的影响。通过频域分析和灰色关联分析,确定非专职驾驶员的高频段功率的标化值(HFnorm)和低频与高频功率的比值(LF/HF)与道路曲线的关系。结果表明:在景观比较单一的沙漠地区道路曲线线形设计中,适当增加不同半径的曲线,能在一定程度上缓解驾驶员的行车疲劳。沙漠道路曲线变化对于驾龄较长的年轻驾驶员迷走神经活动的影响比年长驾驶员的要小。为保证司机的自主神经活动处于合理的范围,沙漠道路平竖曲线长度的设计应根据驾驶员心电的LF/HF指标确定,纵坡度的设计应根据驾驶员心电的HFnorm和LH/HF指标综合确定。

A multiple channel physiological recorder was used to study the desert road curve＇ influence on heart rate of part-time driver in real driving tests to improve the level of the desert road curve design and enhance driving safety on desert highways. Through frequency domain analysis and grey correlation analysis method,relationships between both HFnorm and LH / HF of part-time driver and the road curve were studied. The results showed that arranging some curves,which are different in radius from each other,in highway curve alignment,will help to mitigate driver＇s driving fatigue in the monotonous landscape desert,that effects of the curves on parasympathetic activities of young drives having longer driving experience are weaker than those on the activities of older driver,that lengths should be selected for desert highway horizontal curves and vertical curves according to LF / HF,and that longitudinal slope design should be based on both HFnorm and LH / HF in order that drivers＇ autonomic nervous activities are in a reasonable range.