综合医院医用无频闪LED照明设计  

Medical LED Lighting Design Without Stroboflash in Hospital

作　　者：王恒[1] 刘炼[1] 雷小明[1] 

机构地区：[1]重庆医科大学附属第一医院,重庆400016

出　　处：《灯与照明》2012年第4期56-60,共5页Light & Lighting

摘　　要：探索综合医院医用无频闪LED照明的设计方案。采用数字芯片,应用PWM反激式工作原理和初级反馈控制模式,实现对驱动器次级输出端的电流纹波限制,从而控制LED灯珠光通量的波动深度,最终做出LED灯的实验样品。根据国家建筑照明标准GB50034-2004的要求,选择综合医院环境相同的室内三个公共区,分别安装,通过光照探测器测出传统白炽灯、传统电感镇流器驱动的荧光灯、传统电子镇流器驱动的荧光灯、LED日光灯的波动深度。经过图像分析,采用LED电源的LED灯无频闪现象,而传统的电子镇流器和电感镇流器都存在频闪现象。采用数字控制芯片,应用PWM反激式工作原理和初级反馈控制模式的镇流器设计方案驱动LED灯珠实现了综合医院医用照明的无频闪。To explore solution of the general hospital medical LED lighting without stroboflash phenomenon. Using digital control chip, the application of PWM flyback working principle and primary feedback control mode, to realise limitation of secondary output current ripple, so as to control the depth of LED lamp flux fluctuations, finally made the test sample of LED lamp. According to the national architectural lighting stand- ards GB50034 -2004 requirements, selection of three public areas with the same indoor environment in inte- grated hospital, lamps are respectively fixed in these three areas, through the light detector to detect the fluc- tuations depth of traditional incandescent lamp, traditional inductance ballast fluorescent lamp, traditional e- lectronic ballast fluorescent lamp and LED lamp. After image analysis, using the LED lamp with LED power supply is without stroboflash phenomenon, but the traditional electronic ballast fluorescent lamp and induct- ance ballast fluorescent lamp have stroboflash phenomenon. Using digital control chip, the application of PWM flyback working principle and primary feedback control model of ballast design drive LED lamps realize no stroboflash phenomenon in integrated hospital.

关 键 词：医用照明 频闪 波动深度 

分 类 号：R197.39[医药卫生—卫生事业管理]