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1. 北京交通大学 机械与电子控制工程学院 北京,100044
2. 交通运输部 公路科学研究院 北京,100088
收稿日期:2011-08-24,
修回日期:2011-10-28,
网络出版日期:2012-02-25,
纸质出版日期:2012-02-25
移动端阅览
赵建东, 杨勇, 李兆轩. 中间视觉条件下的道路交通安全照明[J]. 光学精密工程, 2012,20(2): 220-225
ZHAO Jian-dong, YANG Yong, LI Zhao-xuan. Road traffic lighting safety in mesopic vision[J]. Editorial Office of Optics and Precision Engineering, 2012,20(2): 220-225
赵建东, 杨勇, 李兆轩. 中间视觉条件下的道路交通安全照明[J]. 光学精密工程, 2012,20(2): 220-225 DOI: 10.3788/OPE.20122002.0220.
ZHAO Jian-dong, YANG Yong, LI Zhao-xuan. Road traffic lighting safety in mesopic vision[J]. Editorial Office of Optics and Precision Engineering, 2012,20(2): 220-225 DOI: 10.3788/OPE.20122002.0220.
研制了反应时间测定仪
用于有效评价中间视觉条件下的道路交通安全照明。通过采集发光二极管(LED)、高压钠灯(HPS)、金卤灯(MH)3种不同光源背景下人眼观测目标的反应时间
研究在中间视觉条件下各种光源的视觉功效。首先
测试了在不同背景亮度、视标对比度、视标偏心角下
人眼在不同光源下辨认视标的反应时间。然后
利用相关系数法对数据进行回归分析
得出反应时间与不同背景亮度、视标对比度和视标偏心角的关系。最后
基于视觉功效法分析研究了3种光源在中间视觉条件下的反应时间趋势和道路交通安全照明光源光效。结果显示
当背景亮度1.5 cd/m
2
高压钠灯与金卤灯、LED灯产生相同视觉功效时
高压钠灯所需的背景亮度最大
金卤灯次之
LED灯最小。在中间视觉条件下
LED作道路照明光源的视觉功效优于其他两种光源。
A time tester was developed to evaluate the quality of a traffic safety lighting in mesopic vision conditions. Firstly
test parameters including background brightness
visual target contrast and visual target eccentric angle were set by collecting the reaction time of human eyes to observing objects in three kinds of light sources(Light Emitting Diode/High-pressure Sodium Lamp/Metal Halide Lamp
LED/HPS/MH)
and the vision efficiencies of different sources were researched.Then
utilizing the regression analysis of correlation coefficient method
the relationship between reaction time and three test parameters was obtained
respectively. Finally
based on visual performance method
the reaction time tendencies and road traffic lighting performance of the three light sources were analyzed in the mesopic vision. The experimental results show that under the same visual performance conditions
when the background brightness is less than or equal to 1.5 cd/m
2
the background brightness of HPS is the maximum
MH lamps take the second place and the LEDs are the minimum. The conclusion is that the visual performance of the LEDs is better than those of other two light sources in the mesopic vision
therefore they are more suitable for road traffic safety needs.
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