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文章以公路隧道照明察觉对比设计方法中的一项重要参数——一个停车视距的近地面大气透射比τatm(R)为研究对象,为确定其在不同天气条件下的合理取值,研究首先通过分析与比较几种关于大气透射比τatm计算方法,确定大气视觉计算法为最适合的方法。而后,以重庆地区为例,在六种具有代表性的天气条件下完成了大气透射比τatm的实际测定。最终,根据实验结果对τatm(0.1)计算值与CIE推荐值进行了比较与分析。
In this paper, an important parameter of highway tunnel lighting perceived contrast design-a near-surface atmospheric transmittance τatm (R) of parking distance-of-sight is taken as research object. In order to determine its reasonable value under different weather conditions, By analyzing and comparing several methods of calculating atmospheric transmittance τatm, the method of calculating atmospheric visual acuity is the most suitable method. Then, taking Chongqing as an example, the actual measurement of atmospheric transmittance τatm was completed in six typical weather conditions. Finally, the calculated value of τatm (0.1) and the recommended value of CIE are compared and analyzed based on the experimental results.