基于SOPC的全彩色LED景观灯控制系统设计

Design of full-color LED lights control system based on SOPC

针对全彩色LED景观灯控制系统的缺乏,结合SOPC嵌入式开发技术,以FPGA为核心开发了一款基于NiosⅡ嵌入式软核的灯控系统,通过μC/OS-Ⅱ嵌入式实时操作系统的多任务控制方式,实现了对LED灯群进行情景播放的控制。文中分析了系统的功能结构,给出了硬件系统总体设计方案,重点论述了系统中显示驱动单元的设计、PWMIP核的定制方法,对PWMIP核的功能进行了仿真,介绍了系统软件的设计思想和流程。仿真及实验结果表明,通过该系统控制的LED灯群,可以显示256种颜色,具有5种变化方式及全彩色动态变化效果。采用SOPC嵌入式开发技术,简化了系统结构,系统的处理能力、稳定性、功能扩展性显著增强。

For the scarcity of full-color LED lights control system, a lights control system based on Nios Ⅱ soft-core is achieved combining with the embedded technology of SOPC in this paper. This system can control the scene--broadcast for LED group lights by the way of multi-- task control of the μc/os- Ⅱ embedded real time operation system. The functional configuration of this system was analyzed, the overall solution design for hardware was advanced, the design of drive element and the customized method of PWM core this system were presented in detail, the function of PWM core was emulated, and the system software designing ideas and flow was introduced as well. The simulation and experimental results have proved that it can display at least 256 kings of color, and has the moving effort of full-color change with 5 patterns of change. It can simplify the structure of this system, increase the system processing capacity, stability and extended function significantly with the embedded technology of SOPC.