美国GE模块IS215UCVEM01A燃机DCS控制系统卡件

美国GE模块IS215UCVEM01A燃机DCS控制系统卡件

美国GE模块IS215UCVEM01A燃机DCS控制系统卡件

过程控制级具体实现了信号的输入、变换、运算和输出等分散控制功能。在不同的DCS中，过程控制级的控制装置各不相同，如过程控制单元、现场控制站、过程接口单元等等，但它们的结构形式大致相同，可以统称为现场控制单元FCU。过程管理级由工程师站、操作员站、管理计算机等组成，完成对过程控制级的集中监视和管理，通常称为操作站。DCS的硬件和软件，都是按模块化结构设计的，所以DCS的开发实际上就是将系统提供的各种基本模块按实际的需要组合成为一个系统，这个过程称为系统的组态。

现场控制单元一般远离控制中心，安装在靠近现场的地方，其高度模块化结构可以根据过程监测和控制的需要配置成由几个监控点到数百个监控点的规模不等的过程控制单元。

现场控制单元的结构是由许多功能分散的插板(或称卡件)按照一定的逻辑或物理顺序安装在插板箱中，各现场控制单元及其与控制管理级之间采用总线连接，以实现信息交互。

美国GE模块IS215UCVEM01A燃机DCS控制系统卡件

The process control level realizes the decentralized control functions of signal input, transformation, operation and output. In different DCS, the control devices of the process control level are different, such as process control unit, field control station, process interface unit, etc., but their structural form is roughly the same, and they can be collectively referred to as field control unit FCU. The process management level is composed of engineer station, operator station, management computer, etc., to complete the centralized monitoring and management of the process control level, usually called the operation station. The hardware and software of DCS are designed according to the modular structure, so the development of DCS is actually to combine the various basic modules provided by the system into a system according to the actual needs, this process is called the configuration of the system.

The field control unit is generally far away from the control center and installed near the site, and its highly modular structure can be configured into process control units ranging in size from a few monitoring points to hundreds of monitoring points according to the needs of process monitoring and control.

The structure of the field control unit is composed of a number of decentralized boards (or cards) installed in the board box according to a certain logical or physical sequence, and the bus connection between the field control unit and the control management level is adopted to realize information exchange.