远程LED屏控制系统关键技术的研究

Research of Key Technologies to Realize Remote LED Control System

针对LED点阵屏应用的现状,提出并实现了一种通过成熟GSM网络控制远程终端LED屏幕的设计.利用SIM300 GSM模块,通过短消息方式接收控制端的控制命令和显示数据,以单片机(MCU)为核心对短消息进行读取分析,运用字库芯片提取显示码,更新LED屏幕上的显示.对设计中短消息的解码及显示码的提取等关键技术进行了重点说明.系统使用便捷可靠性高,适用于多点、安装条件复杂的LED显示屏应用.

Faced to the status of LED screen applications , a design of controlling remote LED dot display screen through the GSM network was proposed and implemented .The system used the SIM300 GSM module to receive the control commands and display data by way of SMS .A MCU as processing core was used to get and decode the SMS and then the display information of dot matrix was extracted .Remote update display contents and mode on the LED screen were realized finally .This paper analyzed the key technologies about the SMS decoding and dot matrix extracting .The system proved to be convenient and reliable , which is suitable for multi -point, complex installation conditions LED display applications .