基于DMX512协议的LED灯具控制系统  

DMX512-Based Control System for Full-Color LED Luminaires

作　　者：黄以华[1] 廖世文[1] 刘燕林[1] 蔡如海 

机构地区：[1]中山大学信息科学与技术学院电子与通信工程系,广州510275 [2]广州中大中鸣科技有限公司,广州510275

出　　处：《照明工程学报》2009年第4期48-53,共6页China Illuminating Engineering Journal

基　　金：广东省教育部产学研结合项目(2008B090500049);国家自然科学基金项目(60871059)

摘　　要：本文提出一种基于DMX512协议的高亮度全彩LED灯具控制系统。系统前级采用DMX512信号解码器作为DMX控制数据中继器,实现信号的频率调制和信号增强。LED灯具采用智能控制和AC-DCLED驱动一体化设计方案,电能利用效率高且控制灵活,并采用PWM调光方法可实现256级调光从而实现全彩变换。系统各个部件采用分布式连接,控制灵活而且维护方便,并设计单数据总线通信链路,降低了系统的布线成本。该系统为舞台灯光控制、室外装饰照明等应用场合提供了良好的解决方案。This paper presents a DMX512 based control system for high-brightness LED full-color-luminaire. A DMX Decoder is used as a repeater for data transport, to realize frequency modulation and signal enhancement. In the full-eolor-luminaire, a high-eft]ciency AC-DC converter is used to drive the LED integrates with intelligent control function. 256-step PWM is used for the LED dimming. Distributed connect method is used by the system, which make the system quite flexible to control and the maintenance of the system much easier. A single data bus is designed to reduce the cabling cost. The solution of the system can be widely used in many lighting control applications, such as stage lighting, outdoor Decorative lighting, etc.

关 键 词：DMX512 灯具控制系统 脉冲宽度调制 发光二极管 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TM923[自动化与计算机技术—控制科学与工程]