LED显示屏控制系统的关键技术研究

Research on Control System of the LED Display

本文所研究的基于GPRS的远程LED显示屏控制系统的关键技术包括上位机控制端、中转服务器和下位机LED显示屏;上位机控制端和下位机LED显示屏通过中转服务器建立网络连接;本系统具有利用内网穿透技术和中转服务器来实现远程控制,能实现让所有联网的PC来控制每个LED显示屏;有线控制和无线远程控制;降低通信线路铺设成本和通信故障率;增强LED信息传输的稳定性和及时性,LED显示屏能随时接收上位机控制端下发的信息,大大提高LED显示屏的工作效率;增加LED显示屏远程传输的数据量,通过GPRS DTU发送信息,采用TCP/IP网络协议,终端联网数量不受限制;扩展LED显示屏远程应用的距离,只要GPRS网络覆盖的地方都能使用,不受距离限制。

The key technologies of LED display control system based on GPRS in this paper include the host computer control terminal,the relay server and the LED display. The host computer control terminal and the LED display are made a network connection through the transit server. The system achieve remote control by the internal network penetration technology and transit server; the networked PC can make wired control and wireless remote control on each LED display; reduce the costs of communication line and communication failure rate; enhance the stability and timeliness of LED information transmission; and the LED display can receive the host computer control information at any time that greatly improve the efficiency of LED display. The technology can also increase the data amount of LED display remote transmission; send information through the GPRS DTU. With the using of TCP/IP network protocol,the number of terminal networking is not restricted; the remote application distance of LED display is extended as long as the GPRS network coverage can be used,not subject to distance restrictions.