摘要
道路眩光是危及道路安全的重要因素,本文研究了一种基于阈值增量精细化改进的方法。眩光测试分为光幕亮度、路面亮度2个部分,路面亮度可通过仪器直接测试,在视野内变化较大;光幕亮度需额外计算较为复杂,但在视野内变化较小。眩光的测量采用专用测试系统,其原理是通过测试道路照明的光幕和路面亮度,并自动统计分析,识别出亮度分布特征及异常。本文通过实测多个项目发现,虽然道路眩光指标增量阈值单一指标满足要求,但实际亮度差异大小不均,现实中仍将可能导致行车时的视觉盲区。因而,对道路眩光检测,应增加考虑道路区域亮度分布,具体参数为亮度均匀度。
Road glare is an important factor that endangers road safety.This article studies a method based on threshold increment refinement improvement.The glare test is divided into two parts:light curtain brightness and road surface brightness.The road surface brightness can be directly tested by instruments and has a significant change in the field of view.The light curtain brightness requires additional calculations,which is more complex,but has a small change in the field of view.The measurement of glare adopts a special test system,whose principle is to test the brightness of the light screen and road surface of road lighting,and automatically analyze and identify the brightness distribution characteristics and abnormalities.In this paper,through the measurement of several projects,it is found that although the single index of the increment threshold of road glare index meets the requirements,the actual brightness difference is uneven,which may still lead to the visual blind area when driving in reality.Therefore,for road glare detection,the brightness distribution of road area should be taken into consideration,specifically,the parameter is brightness uniformity.
作者
阮春喜
RUAN Chun-xi(Guangzhou Road Affairs Center,Guangzhou 510635)
出处
《广州建筑》
2024年第3期34-36,共3页
GUANGZHOU ARCHITECTURE
关键词
市政道路
照明
眩光
阈值增量
均匀性
municipal roads
lighting
glare
threshold increment
uniformity
