多媒体教学集中监控系统的远程通信接口设计

Design of remote communication interface unit for Multimedia teaching centralized monitor and control system

针对当前多媒体教学集中监控系统中的数据传输距离短、连接节点少以及无法联网等问题,提出了一种多媒体教学集中监控系统的网络通讯接口单元硬、软件设计方案和实现方法。并以单片机和以太网接口控制芯片RTL8019AS及其辅助电路为硬件平台,通过精简的TCP/IP协议栈体系结构实现了多媒体教学集控系统中教室控制机的远距离通信。通过某学校实际应用,表明本设计方案运行稳定可靠,能有效地实现多媒体教学的集中监视和远程控制等功能。

In present, the problems of short-distance date transmission, less connected nodes and network unjoined exist in the multimedia teaching centralized monitor and control system. This paper designed and implemented hardware and software of network interface unit of the system. A hardware platform is established with single chip computer and RTL8019AS as its core. The simple TCP/IP protocol stack is discussed, and how the protocol be realized in classroom controller is introduced as well. Which achieves the Ethernet remote communication. It is used in a university. And it＇s proven that the interface has the great advantage of high reliability and realizes the central monitor and remote control in the multimedia teaching.