基于单片机的大功率LED光强调制系统设计  

Design of Light Intensity Modulation System in High-Power LED Based on MCU

作　　者：李向春[1,2] 巩玉玺[1] 高皜 张浩[2] 罗非[2] 张俊虎[4] 

机构地区：[1]青岛理工大学计算机工程学院,山东青岛266033 [2]山东省科学院海洋仪器仪表研究所,山东青岛266001 [3]山东省海洋仪器仪表科技中心,山东青岛266001 [4]青岛科技大学信息科学技术学院,山东青岛266061

出　　处：《自动化技术与应用》2017年第1期32-34,共3页Techniques of Automation and Applications

基　　金：山东省高等学校科技计划项目(编号J12LN36);青岛市自主创新计划应用研究专项(编号15-9-1-102-jch)

摘　　要：为满足水下不同的光照强度需要,实现水下照明光强的多级调节,设计了大功率LED光强调制电路,提出了一种基于STC单片机的光强多级调节方法。该方法通过调制PWM脉宽实现LED灯光照强度的调节,同时上位机与单片机编码通信实现LED的远程控制。实验证明,该电路调光输出稳定,系统运行效率高。To solve the problem of different illumination intensity under the water and achieve the goal of multi-level regulation, a high-power circuit of LED light in intensity modulation is designed and a method of multi-level modulation in illumination intensity is proposed based on STC microcontroller. The intensity of LED is regulated by modulating the pulse width and it encodes data to solve the problem of remote communication between PC and MCU. The experimental results show that the circuit is stable and the system runs efficiently.

关 键 词：STC单片机 大功率LED 脉宽调制 多级调节 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]