高速公路照明效率实验研究

Experimental research on expressway lighting efficiency

高速公路照明效率主要受到照明方式、亮度对比度及色度对比度等影响.分别进行基于路面亮度的路面照明效率实验及可见度的空间照明效率实验,对照明方式、亮度对比度及色度对比度的影响展开研究.在路面照明效率实验中,比较不同照明方式对路面亮度的影响;在空间照明效率实验中,比较不同背景亮度条件下,对比度、正负对比及同一色差在不同亮度对比度下对可见度的影响,并在亮度对比度较小时,分析不同色差对可见度的影响.结果发现,低灯位逆向照明方式的路面照明效率最高.当路面照明采用低色温光源、前方目标物照明采用高色温光源并保持负对比时,空间照明效率最高.研究结果可为开发超越传统照明形式的LED解决方案提供实测依据.

The expressway lighting efficiency is mainly affected by the lighting method,the brightness contrast and the chromatic contrast. In this paper,the influence of the lighting method,the brightness contrast and the chromatic contrast are investigated with the experiments about the road surface illumination efficiency based on the road luminance,and about the space illumination efficiency based on the visibility. In the experiment on the road surface illumination efficiency,the influence of different lighting methods on the road brightness is investigated. In the experiment on the space illumination efficiency,the effects of positive and negative contrast at different brightness,and the chromatic aberration at different brightness contrast on the visibility are studied. And the dependence of visibility on the chromatic aberration with brightness contrast being zero is also estimated. The efficiency of road lighting method with low-position and reverse lighting is the highest. When lighting of road surface using low color temperature of the light source,and front illumination of a target using high color temperature of the light source and keeping the negative contrast,space lighting is the most efficient. The results could be useful to the development of a new lighting method based on LED light source.