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一、现场控制站的功能在上一讲中,我们已讨论了集散型计算机控制系统(DCS)的体系结构,系统功能和硬件组成.DCS的最突出特点是利用某种通信网络将分散在现场(或现场附近)执行数据采集和控制功能的各现场控制站与位于操作中心(或监视中心)的各个操作、管理站连接起来,来共同实现分散控制、集中管理的功能.构成DCS的现场控制站在组成上和能力上有较大的差别,有数据采集,实现几十到上百个控制回路,甚至可以实现一些高级控制功能:自适应控制功能和一些基本的专家系统功能.而有的DCS的现场控制站由一个简单的单片机(如8096,8031等)组成,完成十几点到几十点的数据采集,实现几个控制回路.此外,有些DCS的现场控制站只具有采集处理功能而无控制功能,它们只能
First, the site control station functions In the last talk, we have discussed the Distributed Computer Control System (DCS) architecture, system functions and hardware components.DCS most prominent feature is the use of a communication network will be dispersed in the scene (Or near the site) to perform data acquisition and control functions of the site control station and the operation center (or monitoring center) of the various operations, management stations connected together to achieve decentralized control, centralized management functions. Standing on the composition and the ability to have a greater difference, there are data acquisition, the realization of dozens to hundreds of control loops, and even some advanced control functions: adaptive control functions and some basic expert system functions. DCS site control station consists of a simple microcontroller (such as 8096,8031, etc.) to complete the dozen to dozens of points of data acquisition, the realization of several control loops.In addition, some DCS site control station only has the acquisition and processing functions Without control functions, they only work