基于ARM的LED点阵自动调光控制系统的设计  

Design of LED Dot Matrix Automatic Dimming Control System Based on ARM

作　　者：赵婷婷[1] 王先全[1] 姜增晖 王培懿[1] 

机构地区：[1]重庆理工大学电子信息与自动化学院时栅传感及先进检测技术重庆市重点实验室,重庆400054

出　　处：《仪表技术与传感器》2016年第8期63-66,96,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(51275551);重庆市自然科学基金项目(cstc2012jj A40062)

摘　　要：为了对LED点阵显示屏实现自动调光,节能和减少光污染,设计出一种基于ARM的LED点阵可调光自动控制系统。系统将ARM微处理器应用到LED点阵显示屏中,提出了一种基于光电检测系统和LED点阵显示屏控制系统的设计方案,系统主要由光检测电路、放大电路、A/D转换、D/A转换、ARM微控制器、驱动电路、LED点阵等模块组成,重点实现了LED点阵显示屏的显示和自动调光,完成LED点阵显示屏光强度的自动控制。实现了LED点阵显示屏的亮度可调,提高LED点阵屏显示的效果,具有操作简单,实用性强等特点,节约了资源。In order to realize automatic dimming for LED dot matrix,to save energy and reduce light pollution,LED dot matrix adjustable light automatic control system based on ARM was designed.The system applies ARM microprocessor to the LED dot matrix display screen,and a kind of design scheme based on photoelectric detection system and LED dot matrix display control system was designed.The system mainly consists of light detection circuit,amplifying circuit,A/D conversion,D/A conversion,ARM micro controller,driving circuit,LED dot matrix module,etc.Display of LED dot matrix display screen and automatically adjusting light were realized,completing automatic control of LED dot matrix display screen light intensity.The LED dot matrix display screen and automatic dimmer were realized,improving the effect of LED dot matrix display.With the characteristics of simple operation,strong practicability,etc.energy conservation was realized.

关 键 词：ARM微处理器 A/D转换 自动调光 LED点阵显示屏 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]