行人突然侵入道路时驾驶人的生理负荷特性研究  

Parameters Analysis of Physiology Load of Drivers during Stress Response

作　　者：王畅[1] 鲁玉萍 付锐[1] 王党青[1] 

机构地区：[1]长安大学汽车学院,西安710064

出　　处：《科学技术与工程》2016年第21期106-111,共6页Science Technology and Engineering

基　　金：国家自然科学基金(51178053;61374196);教育部长江学者与创新团队支持计划项目(IRT1286);国家科技支撑计划项目(2014BAG01B05)资助

摘　　要：针对行人突然侵入道路时的驾驶人生理负荷问题,通过在驾驶模拟器上进行虚拟场景的仿真驾驶试验,获取了22名被试驾驶人的心率表征参数。采用心率增长率和心率变异性LF值对驾驶人的心理负荷特性进行研究,结果表明:自车行驶速度一定时,行人侵入距离减小时驾驶人的心理负荷逐渐增加。相比于正常心率,35.8 m、27.5 m和19.2 m侵入距离情况下的被试平均心率增长率分别达到了18.83%、24.83%和29.6%。侵入距离一定时,车速增加时被试的负荷也呈现明显的增加趋势,30 km/h、40 km/h和60 km/h情况下平均LF值分别为776.38 ms2、744.47 ms2、704.57ms2。差异性检验结果表明,行人侵入距离对驾驶人生理负荷的影响程度要高于自车行驶速度。Aiming at the driver ＇ s physiology load during stress response, virtual stress response scene was designed ,and 22 drivers were convened to carry out stress response test in a driving simulator. Physiology monitoring system was used to record the physiology data during stress response. Heart growth rate and low-frequency stage of heart rate variability were used to analyze physiology load. The result shows that while the speed remains un-changed, the physiology load of driver increased with the decrease of response distance. Compare with normal condition, average heart growth rate of drivers increased 19. 60% , 23. 84% , 29. 66% . While the risky object distance remains unchanged, drivers physiology load increased with the rising of speed, the average LF data were 771. 28 ms^2, 629. 00 ms^2, and 573. 42 ms^2. Difference examination result shows that no significant difference existed while the distance factor and speed factors changing separately.

关 键 词：交通工程 行人侵入 虚拟驾驶 心率变异性 驾驶人 

分 类 号：U471.3[机械工程—车辆工程]