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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。
In order to determine the road curve rationally and ensure the safety of driving on the desert highway, the multi-channel physiology recorder was used to study the influence of desert road curve on the heart rate of the part-time driver in the actual driving test. Through frequency domain analysis and gray relational analysis, the relationship between high frequency power standardization (HFnorm) and low / high frequency power ratio (LF / HF) and road curve of non-full-time driver is determined. The results show that in the linear curve design of the desert road with a relatively simple landscape, the curves of different radiuses are appropriately increased, which can relieve the driver fatigue. Desert curve changes have less impact on vagus nerve activity in older drivers than older drivers. In order to ensure the driver’s autonomic activity is in a reasonable range, the vertical curve length of the desert road should be designed according to the LF / HF index of the driver’s electrocardiogram. The design of the longitudinal gradient should be based on the driver’s HFnorm and LH / HF Comprehensive determination.