基于驾驶员视觉负荷的格栅式减光罩频闪效应研究

Flickering Frequency Effect of Grille Light-reducing Hood Based on Drivers’Visual Load

隧道口路段由于光环境变化剧烈,使得驾驶人视觉能力减弱,对空间距离、行车速度,以及路面障碍物不能准确感知,成为隧道交通事故高发路段.随着对隧道运营节能降耗需求的提高,设置隧道口减光设施已成为有效的解决方案.针对格栅式减光设施,利用微缩模型仿真和驾驶模拟实验相结合的方法,以驾驶员眨眼频率和心率增长率为指标,对隧道口路段不同频闪频率条件下驾驶人生理心理变化规律展开研究.实验分析结果表明:频闪频率值与心率变化率、眨眼增加次数均呈高斯拟合关系.

Because of the drastic changes in light environment,the visual ability of motorists is weakened,and the space distance,driving speed and road obstacles cannot be accurately perceived,which makes it a road with high incidence of tunnel traffic accidents.With the increasing demand for energy saving and consumption reduction in tunnel operation,it has become an effective solution to set up tunnel port light reduction facilities.Aiming at the grille dimming facility,the variation law of motorists’physiological and psychological indexes under different strobe frequency conditions was studied by means of the combination of miniaturized model simulation and driving simulation experiment.The experimental results show that the flickering frequency value has a Gaussian fitting relationship with the rate of change of heart rate and the number of blinking increases,which provides guidance for the reasonable frequency range of the grid dimming section at the tunnel entrance.