基于视觉功效法及行人穿行情况下的LED道路照明功效研究

LED Road Lighting Efficiency Study Based on Visual Efficacy Method and Pedestrian Walk Through the Street

对高压钠灯和普遍使用的三种LED灯在中间视觉下的视觉功效进行实验,并得到了20个样本的基础数据。对实验原始数据进行科学地筛选和分析,得到20个样本在4种光源照明下不同道路亮度等级反应时间规律。一方面使用这些普遍参数值通过spass软件进行数学拟合处理,得到中间视觉下的高压钠灯和3种LED光源的路面亮度与反应时间关系的视觉功效函数。另一方面将这些普遍参数值和4种光源的特性和光谱进行对照分析得到影响中间视觉下人的反应时间的主要因素和主要波长光谱。

The visual efficacy of high pressure sodium lamp and three widespread LED lights were tested under mesopic vision simultaneously and obtained the basic data of 30 samples. After screening and analysising the experimental raw data scientifically, 30 samples＇ universal parameter values of the reaction time are gained under the conditions of 4 lights in different road brightness levels. Universal parameter values were used to fit the mathematical process through spass software, and the visual efficacy function of the relationship between surface brightness and reaction time of high pressure sodium and three LED lights under mesopic vision was gained. After control analysis the characteristics and spectral of these universal parameter values and four kinds of lights, the main factors and wavelength spectrum which affect human reaction time under mesopic vision can be achieved.