LED照明设备中色温因素的分析  

Analysis of Medium Temperature Led Lighting Equipment

作　　者：周大伟 卢志椿[1] ZHOU Da-wei;LU Zhi-chun(Beihai Vocational College,Beihai Guangxi 536000,China)

机构地区：[1]北海职业学院,广西北海536000

出　　处：《装备制造技术》2020年第7期75-76,94,共3页Equipment Manufacturing Technology

基　　金：北海职业学院2019年度科研课题—基于SIM卡的交通灯故障诊断系及报警系统研究与开发,立项编号:2019KY1592。

摘　　要：以冷暖白光LED以及PWN(两通道脉冲宽度调制)法,对LED照明设备中的色温调节进行了分析。从各种关键的光源参数出发,建立了光源控制占空比计算的模型,确定了占空比的确定方法和基于色温目标控制参数占空比的约束条件。结果表明,混色光源在调节色温时光通量的变化范围较小,一般在2.5%左右,相关色温偏差在10K以内。表明设计方案简单可行,可参考性强。The color temperature adjustment of LED lighting equipment is analyzed by using cold and warm white LED and PWN(two channel pulse width modulation)method.In this paper,starting from various key light source parameters,the calculation model of light source control duty cycle is established,and the determination method of duty cycle and the constraint conditions of duty cycle based on color temperature target control parameters are determined.The results show that the variation range of light flux is small,generally about 2.5%,and the relative color temperature deviation is within 10K.It shows that the design scheme is simple and feasible,and has strong reference value.

关 键 词：LED照明设备 色温可调 高显色性 照明控制 

分 类 号：TN312[电子电信—物理电子学]