应用于公共广播的串口网桥的设计与实现

Design ＆ Implementation of Serial Communication Protocol Converter for PAS

本文提出一种应用于网络化公共广播系统的串口网桥，为公共广播系统的控制主机和广播终端之间提供了透明数据传输服务。使得能将传统公共广播系统终端应用于网络化公共广播系统中，为实现传统公共广播系统向网络化公共广播系统的升级提供了一种有效的解决方案。该串口网桥的硬件设计基于高集成度的网络单片机MC9S12NE64，配合基于嵌入式TCP／IP协议栈OpenTCP的软件，具有结构简洁，体积小，功耗低，效率高和灵活性强的优点。

This paper proposes the serial communication converter which provides transparent data transmission services for the hosts and the terminals in public address system. Based on this serial communication converter, terminals in traditional public address systems are able to be used in network public address systems, it provides an effective solution to upgrade public address system from traditional form to network form. The serial communication converter is designed with network single ship processor Mcgs12NE64 and embedded TCP/IP stack - OpenTCP, has simple structure, small form, low power consumption, high capability and flexibility.