低透過率下隧道照明亮度對能見度的影響
發(fā)布時間：2018-11-24 17:11
【摘要】：為了研究低透過率下隧道照明亮度對能見度的影響,為低透過率條件下隧道照明亮度的調(diào)節(jié)提供依據(jù),分別以兩種不同光譜特性的攝像機作為觀測裝置獲得了透過率、照明亮度、目標/背景對比度三者之間的變化關(guān)系.實驗結(jié)果表明:目標/背景對比度隨照明亮度的增加而增加,兩者呈非線性關(guān)系;透過率限定了目標/背景對比度所能達到的最大值;在一定的亮度范圍內(nèi),提高亮度增加目標/背景對比度可以有效改善能見度.當照明亮度較高時,提高照明亮度對能見度影響不大;當照明亮度較低時,提高照明亮度對能見度提高的效果明顯.因此,根據(jù)透過率按比例調(diào)節(jié)照明亮度能保證能見度和行車安全.
[Abstract]:In order to study the influence of tunnel lighting brightness on visibility at low transmittance, and to provide the basis for the adjustment of tunnel lighting luminance under low transmittance, two cameras with different spectral characteristics were used as observation devices to obtain the transmittance. The relationship between illumination brightness and target / background contrast. The experimental results show that the target / background contrast increases with the increase of illumination brightness, and the transmittance limits the maximum value of the target / background contrast. In a certain range of luminance, raising brightness and increasing contrast of target / background can effectively improve visibility. When the illumination brightness is high, the improvement of illumination brightness has little effect on visibility; when the illumination brightness is low, the effect of improving lighting brightness on visibility is obvious. Therefore, the illumination brightness can be adjusted proportionally according to the transmittance to ensure visibility and driving safety.
【作者單位】： 大連海事大學信息科學技術(shù)學院光電實驗室;吉林省高等級公路建設局;
【基金】：吉林省交通科技項目(No.2014-4-1-3)資助~~
【分類號】：U453.7
本文編號：2354436
[Abstract]:In order to study the influence of tunnel lighting brightness on visibility at low transmittance, and to provide the basis for the adjustment of tunnel lighting luminance under low transmittance, two cameras with different spectral characteristics were used as observation devices to obtain the transmittance. The relationship between illumination brightness and target / background contrast. The experimental results show that the target / background contrast increases with the increase of illumination brightness, and the transmittance limits the maximum value of the target / background contrast. In a certain range of luminance, raising brightness and increasing contrast of target / background can effectively improve visibility. When the illumination brightness is high, the improvement of illumination brightness has little effect on visibility; when the illumination brightness is low, the effect of improving lighting brightness on visibility is obvious. Therefore, the illumination brightness can be adjusted proportionally according to the transmittance to ensure visibility and driving safety.
【作者單位】： 大連海事大學信息科學技術(shù)學院光電實驗室;吉林省高等級公路建設局;
【基金】：吉林省交通科技項目(No.2014-4-1-3)資助~~
【分類號】：U453.7
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