基于工业以太网和现场总线的集散控制系统

Distributed Control System Based on Industrial Ethernet and FieldBus

基于工业以太网和现场总线的集散控制系统(DCS),在基本组成基础上,扩充了专用功能站、生产管理和信息处理的信息网络、实现现场仪表和执行机构数字化的现场总线网络。控制站直接进行现场I/O数据采样、信息交互、控制运算及逻辑控制,完成整个工业过程中的实时控制,并实现各种I/O接口。现场总线系统采用CAN总线,改变系统现场信号线的接线方式,使DCS在现场检测和控制执行方面被数字化。

Distributed control system （DCS） is based on industrial ethernet and fieldBus. On the basic construction, the system extends special function stations, communication networks for produce management and information disposal, fieldBus networks that realize locale instruments and executing agency＇s numeralization. Control stations process directly carries out locale I/O data sampling, information alternation, control operation and logic control, completes real-time control in the whole industry process and realizes kinds of I/O interfaces. In the field bus system CAN changes system locale signal lines＇ connection mode and makes DCS numeralization in locale measurements and control executions.