基于MATLAB分析的城市道路照明环境比

基于驾驶员在行驶过程中的注意力大部分集中在车辆的正前方,忽略了道路两侧的情况的视觉特性,更容易引发交通事故的问题。环境比为评价路边物体可视度的指标,为了保证评价的准确性,尤其是保障夜间行驶的良好视觉环境,可以根据路灯设置的基本原则及照明强度与可见度的关联特性,使用MATLAB(矩阵实验室)对环境比进行模拟分析,从理论的角度研究其相关的影响因素,提出了采取减小灯具倾斜角、缩短灯具悬臂悬挑长度以及增加路灯灯杆安装位置与路缘石的距离等措施可以提高道路照明环境比的观点,可以作为路灯改造工程、路灯灯具外形的设计以及夜间行驶事故分析的理论基础。

Surrounding Ratio Analysis for Urban Road Lighting Based on MATLAB

The phenomenon of drivers' attention often liable to concentrate on right ahead and ignore side direction can result in traffic accidents more easily. Aiming at this problem, road lighting surrounding ratio was proposed to evaluate visibility of roadside objections. In order to ensure the accuracy of evaluation and the good visual surroundings of night-driving, a simulation analysis on surrounding ratio was made by applying MATLAB(Matrix Laboratory)according to the basic principle of streetlamp setting and the correlation between illumination intensity and visibility. At the same time, factors affecting surrounding ratio were researched theoretically. Based on the research result, standpoints to increase road lighting surrounding ratio by reducing lamp obliquity, shortening length of lamp jib arm and increasing the distance between streetlamp pole mounting position and curbstone were presented, which may provide a theoretical basis for the innovation of streetlamp project, the design of streetlamp appearance and the analysis of traffic accident at night.