摘要
系统采用STC12C5A60S2单片机作为主控芯片,高电压、大电流的达林顿晶体管阵列集成电路ULN2003为驱动,DS18B20为温度传感器,通过RS232串口通信和键盘输入两种方式设定三色LED灯珠的亮度,以三路PWM方式调节三色灯珠亮度,实现了对大功率LED灯的色彩控制。该系统为学生提供了一个较好的软硬件实践平台。
In this high power LED control system, STC12C5A60S2 is used as MCU chip, the IC ULN2003 with high voltage and large current is as drive chip for high power LED, and DS18B20 is as temperature sensor. The lightness of tri-color led is set by RS232 communication mode and keyboard mode, and is adjusted by PWM mode. As the result, the colorful display of high power LED is realized by this system. Moreover, a good software and hardware experiment platform is provided to students.
出处
《实验室科学》
2012年第5期50-52,共3页
Laboratory Science
