基于AVR的新型LED无线智能调光系统设计

Design of New LED Dimming System Based on the AVR

设计了一种基于AVR单片机的LED智能无线调光系统。该系统驱动电源部分采用高度集成反激型电源拓扑结构,采用MAX16802作为LED的恒流驱动器,调光部分采用ATmeage16单片机作为控制核心,利用AVR单片机定时器的精确定时来产生占空比可调的PWM信号对LED灯进行调光。无线控制模块采用体积小、成本低、功耗小的红外遥控,实验结果显示所设计的LED调光系统效率高、满足大功率LED照明的电压电流工作要求,具有良好的无线调光功能。

A LED intelligent wireless dimming system based on AVR microcontroller is designed in this paper. The drive flyback power supply of the system adopts the highly integrated topologies. It uses MAX16802 as a constant current LED driver, the dimming part takes ATmeagel6 precise timing control microcontroller as the core and makes LED lights dimming with the adjusted duty cycle PWM signal generated by the accurate timing of AVR SCM timer. The Infrared remote control is used as wireless control module with the advantages of small size, low cost, low power consumption etc. The experimental results show that the high efficiency LED dimming systems designed can meet the voltage and current requirements of high-power LED lighting work, and with good wireless dimming function.