智能LED信息显示屏控制系统设计与应用  

Design and Application of Intelligent LED Information Display Screen

作　　者：汪岚[1] 

机构地区：[1]黎明职业大学机电工程系,福建泉州362000

出　　处：《液晶与显示》2011年第5期655-659,共5页Chinese Journal of Liquid Crystals and Displays

基　　金：泉州市科技计划重点资助项目(No.2008G15;No.2008G16)

摘　　要：针对传统点阵显示屏显示内容难以脱机更新、读写数据缓冲和扫描速度不匹配容易造成闪屏的问题,介绍了一种以ATMEGA32为核心的可旋转式智能LED信息显示屏控制系统的设计方案。硬件上利用MBI5026提升显示驱动能力,并利用ADXL202实现重力识别和显示信息自动转向的旋转功能。软件上利用编程实现汉字拼音输入功能,实时更新显示信息,还构建了行列扫描优化模型,根据模型最优解合理设置行列扫描数目和次数,可在现有硬件资源的基础上将扫描速度提升至最优状态。实践证明,系统具有显示亮度智能调节、外围电路简单和易安装升级等优点,有很好的工程实用价值。In regard to the issues including information can not be update off-line,the splash screen which was caused by conflict between reading-writing frame cache and scanning,an intelligent LED display control system design method was presented based on ATMEGA32.In hardware section,MBI5026 was used to enhance the driver ability,and ADXL202 was used to build up the abilities of gravity recognition and automatic information display rotation.In software section,Chinese input-PINYIN,real time information display was available in the program,a scanning optimal model is also established.By setting up the parameters of numbers of row-column and numbers of scanning optimally,the scanning speed can be improved to its maximum capacity.Experimental results show that the system has great advantages,including the brightness can be adjusted intelligently,the external circuit is simple and easy to install and upgrade.In short,it is an excellent application for engineering.

关 键 词：MBI5026 ADXL202 行列扫描优化模型 汉字拼音输入 

分 类 号：TN27[电子电信—物理电子学] TP311[自动化与计算机技术—计算机软件与理论]