基于自然驾驶试验的山区公路纵坡路段驾驶负荷分析

发布时间：2018-01-16 11:49

本文关键词：基于自然驾驶试验的山区公路纵坡路段驾驶负荷分析　出处：《东南大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：为得到驾驶人在纵坡路段上行车时的驾驶负荷及其影响因素,在山区复杂线形公路上开展了自然驾驶试验,采集了真实驾驶习惯条件下的汽车行驶速度、轨迹、加速度等运行参数和驾驶人心电信号,分析了公路纵面线形参数、汽车加(减)速度与驾驶人心率增长率H_(RI)之间的关系.结果表明,纵坡参数、加速度与H_(RI)三者之间相互影响.坡长与H_(RI)之间存在较弱的正相关性;坡度与H_(RI)之间存在较强的相关性,其中下坡路段的相关性强于上坡路段,并且坡长越长,坡度增加导致H_(RI)的增长越明显;H_(RI)与加(减)速度正相关,坡度越大,H_(RI)对加(减)速度的变化越敏感,且下坡路段减速度与H_(RI)的相关性较上坡路段加速度与H_(RI)的相关性更显著.
[Abstract]:To get the driving load and its influence factors when driving the driver in the longitudinal section, in the mountains on the road to carry out complex linear driving test, collecting real driving habits under the condition of the vehicle speed, trajectory, acceleration and other operating parameters and driving exciting signal, the paper analyzes the highway vertical alignment parameters of vehicle (minus) speed and the driver's heart rate H_ (RI). The relationship between the results show that the longitudinal slope parameters, acceleration and H_ (RI) the mutual influence between the three. The length of slope and H_ (RI) and there was weak positive correlation between slope degree and H_; (RI) there is a strong correlation between. The correlation is stronger than the downhill and uphill road, slope length, slope of the increase of H_ (RI) growth is more obvious; H_ (RI) and plus (minus) rate of positive correlation, the greater the slope, H_ (RI) on the plus (minus) the more sensitive the speed change, and downhill reduction with the speed of H_ (RI The correlation between the acceleration of the upper slope and the H_ (RI) is more significant than that of the upper slope.

【作者单位】：重庆交通大学重庆市交通运输工程重点试验室;重庆交通大学交通运输学院;
【基金】：国家自然科学基金资助项目(51278514,51678099) 交通运输部应用基础研究资助项目(2015319814050) 重庆市科技计划资助项目(cstc2014jcyj A30024)
【分类号】：U491.254
【正文快照】： 近年来,重特大交通事故频繁发生,山区公路纵坡路段的行车安全问题亟待解决.在弯多坡陡的山区路段行车时,驾驶人要随时操纵踏板以调整行车速度,避免速度增长过快或是出现严重衰减,并使速度适应不断变化的道路线形,因此极易造成驾驶人体力和精神负荷的累积,从而引起驾驶疲劳,增

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