低透过率下隧道照明亮度对能见度的影响
发布时间：2018-11-24 17:11
【摘要】：为了研究低透过率下隧道照明亮度对能见度的影响,为低透过率条件下隧道照明亮度的调节提供依据,分别以两种不同光谱特性的摄像机作为观测装置获得了透过率、照明亮度、目标/背景对比度三者之间的变化关系.实验结果表明:目标/背景对比度随照明亮度的增加而增加,两者呈非线性关系;透过率限定了目标/背景对比度所能达到的最大值;在一定的亮度范围内,提高亮度增加目标/背景对比度可以有效改善能见度.当照明亮度较高时,提高照明亮度对能见度影响不大;当照明亮度较低时,提高照明亮度对能见度提高的效果明显.因此,根据透过率按比例调节照明亮度能保证能见度和行车安全.
[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.
【作者单位】： 大连海事大学信息科学技术学院光电实验室;吉林省高等级公路建设局;
【基金】：吉林省交通科技项目(No.2014-4-1-3)资助~~
【分类号】：U453.7
本文编号：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.
【作者单位】： 大连海事大学信息科学技术学院光电实验室;吉林省高等级公路建设局;
【基金】：吉林省交通科技项目(No.2014-4-1-3)资助~~
【分类号】：U453.7
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