作　　者： ; ; ;

机构地区： 重庆邮电大学光电工程学院

出　　处： 《数字通信》 2012年第2期81-84,共4页

摘　　要： 为了解决采用传统光源设计的应急照明灯存在的应急时间不长等问题,设计了一种LED日常照明和应急照明两用驱动电路,分析了采用LED作为应急照明光源的优势,利用仿真软件saber建立了LED恒流驱动控制芯片QX9910的仿真模型,在建立起电路各个主要模块的基础上,搭建了LED照明应急两用驱动电路,并在日常照明和应急照明2种工作模型下对电路进行了整体仿真。仿真结果表明,该电路在2种工作模式下都能稳定运行,能实现预期的设计目标。 A LED lighting and emergency lighting dual-use driver Circuit is proposed to prolong length of emergency lighting time. The advantages of emergency lighting system using LED are analyzed. A high efficient LED driver control IC QX9910 is established using simulation software Saber. After all component models have been established, a LED lighting and emer- gency lighting dual-use driver Circuit can be finished . Simulation shows that the Circuit is reliable, and it can provide steady Current for LED under the two modes and has a good expandability.

关 键 词： 照明应急两用 驱动电路

领　　域： [电气工程]