摘要
大功率LED在汽车前灯、夜间照明等领域有广泛应用,它的高效节能调光对于工业商业乃至生活都有重要意义。本文基于STM32单片机,采用PWM调光和蓝牙无线传输方式,实现无线大功率LED调光控制。PWM频率选择2 kHz,通过按键和蓝牙方式控制LED灯亮度,控制信息显示在LCD显示屏上。
High-power LED lamp has a wide range of applications in the automotive headlights, night lighting and other fields. It is of great significance to industry and commerce and even to life for its high-efficiency energy-saving dimming. Based on STM32 microcontroller, in this paper, PWM dimming and Bluetooth wireless transmission are used to accomplish wireless high-power LED lamps dimming control. 2 kHz is selected for PWM frequency, LED brightness can be controlled through buttons and Bluetooth, and the control information is displayed on the LCD screen.
作者
关丛荣
赵伟程
祝天岳
王愉天
刘政贤
胡子佳
GUAN Congrong;ZHAO Weicheng;ZHU Tianyue;WANG Yutian;LIU Zhengxian;HU Zijia(North China University of Technology, Beijing 100144 China;Systems Engineering Research Institute, China State Shipbuilding Corporation (CSSC), Beijing 100094 China)
出处
《照明工程学报》
2019年第6期94-99,104,共7页
China Illuminating Engineering Journal
