SCADA系统的分布式人机工作站

A DISTRIBUTED MMI WORKSTATION FOR SCADA SYSTEM

本文分析了SCADA系统中传统终端式人机工作站和先进的分布式人机工作站的特点,指出了分布式人机工作站具有独立工作、联机方便、易于扩展、操作简单以及可减轻主机负担等优点。在此基础上,文章介绍了作者研制开发的一个分布式人机工作站,并着重讨论了该工作站的硬软件运行环境、人机界面开发工具、主机工作站通信协议以及基于直接操纵(DM)方法的人机交互。

The paper analyses the characteristics of the traditional terminal-like workstations and advanced distributed workstations, and presents the point that a distributed workstation possesses some dvantages, such as work-alone, easy connection and extension, simple operation, lower load on main computer, etc.. Then the paper shows a distributed workstation designed by the writer, and gives a detail discussion on it in all aspects, including the running environment of hardware and software, the developing tools for Man-machine interface, the communication protocol between main computer and MMI workstation, as well as the Human-Computer interaction based on the method of Direct Manipulation.