基于驾驶模拟试验的特长公路隧道驾驶疲劳规律研究

Research on Driver Fatigue in Extra-Long Highway Tunnels Based on Driving Simulation Test

为确定长时间单调环境驾驶时疲劳急剧上升的临界值,从而定点设置疲劳缓解灯光带,预防疲劳驾驶事故,依托全长9410 m的昆明绕城高速杨林隧道,以7个心电指标作为定量分析参数,基于驾驶模拟试验对特长公路隧道驾驶疲劳进行研究,得到如下结论:(1)疲劳评价心电指标SDNN、RMSSD、LF、LF_(norm)、LF/HF随隧道内驾驶时间呈上升趋势,心电指标HF、HFnorm呈下降趋势;(2)对心电表征指标进行处理,得到降维后驾驶疲劳累积指标F的计算公式,将该驾驶疲劳累积指标F与驾驶时间的实测数据进行拟合,明确试验工况下驾驶疲劳急剧上升期时间为第4 min,该时间点即为疲劳驾驶危险起点;(3)根据研究成果,给出公路隧道疲劳缓解灯光带的位置设计方法,并对依托工程杨林隧道疲劳缓解灯光带进行设计。

In order to determine the critical value of the sharp rise in fatigue when driving in a monotonous environment for a long time,so as to set fatigue relief light strips at fixed points and prevent driver fatigue accident.In this paper,relying on the Yanglin Tunnel of the Kunming Ring Expressway with a total length of 9410 m,using seven ECG indicators as quantitative analysis parameters,the driver fatigue in the super-long highway tunnel is studied based on the driving simulation test,and the following conclusions are obtained:(1)Fatigue evaluation ECG indicators SDNN,RMSSD,LF,LF_(norm),and LF/HF showed an upward trend with the driving time in the tunnel,and the ECG indicators HF and HFnorm showed a downward trend.(2)The calculation formula of the rear driver fatigue accumulation index F is to fit the driver fatigue accumulation index F with the measured data of driving time,and it is clarified that the sharp rise period of driver fatigue under the test conditions is the 4 th minute,and this time point is the fatigue driving.Dangerous starting point;(3)According to the research results,the position design method of the road tunnel fatigue relief light belt is given,and the fatigue relief light belt of the Yanglin Tunnel is designed.