一种基于FPGA的LED室内照明系统设计与实现

Design and Implementation of LED Indoor Lighting System Based on FPGA

针对LED光源在室内照明中的应用,设计了一种LED室内照明控制系统,该系统包括室内控制盒和模组控制器两部分.采用FPGA芯片Spartan-3E设计了室内控制盒硬件电路,并将模组控制器全部集成到XILINX公司的Cool Runner-II CPLD芯片中,用来接收DMX512协议上的调光数据,并将调光数据转化为PWM信号.LED驱动器接收PWM信号以便控制和调节LED光源亮度;利用SOPC开发工具EDK,搭建了基于32位嵌入式软核处理器的嵌入式系统,设计了室内控制盒的软件,最终实现了八种室内LED照明模式.

A set of indoor LED lighting control system for LED applications in indoor lighting is presented. The in-door LED lighting system include indoor control box and module controllers. A FPGA chip Spartan-3E is adapted to design the hardware circuit of indoor control box. The module controller is realized in a CoolRunner-II CPLD chip of Xilinx Company, which receives the brightness information from DMX512 protocol and output PWM signals. The LED driving chips receive PWM signals to control and adjust the LED lighting level. The SOPC Embedded Develop-ment Kit(EKD)is used to build the whole software system that is based on a 32-bit Microblaze soft processor. Final, 8 LED lighting patterns have been finished.