公路隧道照明对比显示系数探讨

Discussion on the Tunnel Lighting Contrast Display Coefficient

文章对公路隧道照明对比显示系数进行了探讨,根据实际隧道在不同照明工况时在给定区域内各测点处路面亮度和小目标垂直面上照度的比值,分析了不同隧道中间段和入口段在只开启基本照明时的对比显示系数的变化规律,并探讨了在不同照明功率(光源功率近似成倍变化)时入口段的对比显示系数几乎保持不变的现象,得出了公路隧道照明的对比显示系数与隧道照明方式、灯具间距和挂高、光源功率、灯具位置、灯具配光以及隧道内多次反射等有关,即与隧道内光的空间相对分布有关。

The article discussed the tunnel lighting contrast display coefficient,based on the road surface brightness and small target vertical surface illumination ratio of tunnels in different lighting conditions,The article analyzed the contrast display coefficient＇s variation of tunnel＇s entrance section and middle section,and discussed the phenomenon that contrast of the entrance section coefficient remained almost constant even if in the different lighting power conditions（source power approximately exponentially change）.Concluded that the tunnel lighting＇s contrast display coefficient and tunnel lighting the way related with the lamp spacing and hanging high,light source power,position lamps,lamps with light tunnel multiple reflections and so on,that is related to the distribution of the light in the tunnel space.