雾霾型LED交通信号灯的设计  

Design of LED Traffic Lights for Haze Weather

作　　者：周朕[1] 李馨雨 张宇奇 宋昱希 黄增光[1] ZHOU Zhen;LI Xinyu;ZHANG Yuqi;SONG Yuxi;HUANG Zengguang(School of Science,Huaihai Institute of Technology,Lianyungang 222005,China)

机构地区：[1]淮海工学院

出　　处：《中国照明电器》2019年第6期13-15,20,共4页China Light & Lighting

基　　金：国家自然科学基金研究项目(61774069);2018年度淮海工学院省级创业训练项目

摘　　要：针对雾霾天气,交通信号灯不易辨识的问题。基于不同波长的透雾特性不同和人眼光谱光效率函数理论,采用混光技术和驱动电路PWM调光技术,设计出一种增强LED交通信号灯穿透雾霾能力的方法。该方法可在交通信号灯颜色色品图范围内,实现光源光强的调节和光谱色的微调,从而增强不同雾霾情况下交通信号灯的可辨识性。Traffic lights are difficult to identify in haze weather. Based on the haze permeability of different wavelengths and the spectral efficiency function theory of human eye, a design of LED traffic lights for haze weather is realized by using mixing light technology and PWM dimming technology. This method can adjust the light intensity of light source and fine-tune the spectral color in the range of color chromaticity map of traffic signal lamp. Thus, the identifiability of traffic lights under different haze conditions can be enhanced.

关 键 词：雾霾 混光 光强 LED PWM 

分 类 号：TM923[电气工程—电力电子与电力传动]