基于以太网的嵌入式水情测控系统的研究与实现

基于各种通信方式的优缺点,提出了将水情测控设备等通过AVR单片机和网卡芯片接入以太网进行数据通信的方式。简单介绍了以太网控制芯片RTL8019AS工作情况,系统的软件结构及通信协议,以及通过以太网传送水情测控信息的实现方法。并分析了该系统的硬件电路和软件设计。通过实验室局域网的测试,该系统能够完成相应的测控任务。随着互联网的普及和发展,该测控系统的应用范围将更广。

Research and Realization of Water Regime Measure and Control Embedded System from Ethernet

Because of advantage and disadvantage of other communication method, the data communication method of accessing Ethernet by single-chip microcomputer and network card chips for water regime measuring and control equipment is put forward. This article presents briefly operation situation for RTL8019AS Ethernet control chip, system software structure, communication protocols and realization method for transmitting water regime information by Ethernet. Moreover, the design for system hardware circuit and software are also analyzed. By experiment of laboratory local area network, it has shown that the system can complete relevant measuring and control tasks. With the popularization and development of Internet, this system will be of wider application.