用脉宽调制技术实现三基色LED灯的调色

摘要

文章介绍了用脉宽调制技术调节LED亮度的方法，并用此技术进行红、绿、蓝三基色LED灯的亮度调节，进而达到LED自由调色的目的。同时利用单片机控制技术，调节LED彩灯的发光周期，实现LED彩灯亮度色彩的变换。%This paper introduces the way to adjust brightness of LED based on pulse width modulation technology, and the technology is applied to adjust brightness of LED-lamp of red, green and blue for the aim of adjusting color of LED freely. Meanwhile, by MCU command technology, the shining cycle of multicol- ored LED-lamp is adjusted to change brightness and colors of multicolored LED-lamp.