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你知道什麽是DCS控製係統嗎?

2021-02-06 15:55:56 來源:http://www.qistar-garment.net/ 53

DCS係統又稱為DCS控製係統(Distributed Control System),即集散控製係統,是以微處理器為基礎,采用控製功能分散、顯,示操作集中、兼顧分而自治和綜合協調的設計原則的新一代儀表控製係統。集散控製係統簡稱DCS,也可直譯為“分散控製係統”或“分布式計算機控製係統”。
DCS system, also known as distributed control system (DCS), is a new generation of instrument control system based on microprocessor, which adopts the design principles of decentralized control function, display, centralized operation, taking into account the division and autonomy and comprehensive coordination. Distributed control system (DCS) is also called "distributed control system" or "distributed computer control system".
DCS采用控製分散、操作和管理集中的基本設計思想,采用多層分級、合作自治的結構形式。其主要特征是它的集中管理和分散控製。目前DCS在電力、冶金、石化等各行各業都獲得了其廣泛的應用。
DCS adopts the basic design idea of decentralized control, centralized operation and management, and adopts the structure of multi-layer classification, cooperation and autonomy. Its main feature is its centralized management and decentralized control. At present, DCs has been widely used in electric power, metallurgy, petrochemical and other industries.
DCS硬件體係結構:
DCS hardware architecture:
(1)現場控製單元
(1) Field control unit
現場控製單元一般遠離控製中心,安裝在靠近現場的地方,其高度模塊化結構可以根據過程監測和控製的需要配置成由幾個監控點到數百個監控點的規模不等的過程控製單元。現場控製單元的結構是由許多功能分散的插板(或稱卡件)按照一定的邏輯或物理順序安裝在插板箱中,各現場控製單元及其與控製管理級之間采用總線連接,以實現信息交互。
The field control unit is usually far away from the control center and installed near the site. Its highly modular structure can be configured into process control units with different scales from several 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 lot of boards (or cards) with scattered functions, which are installed in the board box according to a certain logical or physical order. Each field control unit and its control management level are connected by bus to realize information exchange.
               浙大中控dcs卡件XP313
現場控製單元的硬件配置需要完成以下內容:插件的配置 根據係統的要求和控製規模配置主機插件(CPU插件)、電源插件、I/O插件、通信插件等硬件設備;硬件冗餘配置 對關鍵設備進行冗餘配置是提高DCS可靠性的一個重要手段,DCS通常可以對主機插件、電源插件、通信插件和網絡、關鍵I/O插件都可以實現冗餘配置。
The hardware configuration of the field control unit needs to complete the following contents: configuration of plug-ins; configuration of host plug-ins (CPU plug-ins), power plug-ins, I / O plug-ins, communication plug-ins and other hardware devices according to the system requirements and control scale; hardware redundancy configuration Redundancy configuration of key equipment is an important means to improve the reliability of DCS. DCs can usually achieve redundancy configuration of host plug-in, power plug-in, communication plug-in, network plug-in and key I / O plug-in.
硬件安裝 不同的DCS,對於各種插件在插件箱中的安裝,會在邏輯順序或物理順序上有相應的規定。另外,現場控製單元通常分為基本型和擴展型兩種,所謂基本型就是各種插件安裝在一個插件箱中,但更多的時候時需要可擴展的結構形式,即一個現場控製單元還包括若幹數字輸入/輸出擴展單元,相互間采用總線連成一體。就本質而言,現場控製單元的結構形式和配置要求與模塊化PLC的硬件配置是一致的。
The hardware installation of DCS is different. For the installation of various plug-ins in the plug-in box, there will be corresponding provisions in the logical sequence or physical sequence. In addition, the field control unit is usually divided into basic type and extended type. The so-called basic type is that all kinds of plug-ins are installed in a plug-in box, but more often it needs an extensible structure, that is, a field control unit also includes several digital input / output expansion units, which are connected by bus. In essence, the structure and configuration requirements of field control unit are consistent with the hardware configuration of modular PLC.
(2)操作站
(2) Operation station
操作站用來顯示並記錄來自各控製單元的過程數據,是人與生產過程信息交互的操作接口。典型的操作站包括主機係統、顯示設備、鍵盤輸入設備、信息存儲設備和打印輸出設備等,主要實現強大的顯示功能(如模擬參數顯示、係統狀態顯示、多種畫麵顯示等等)、報警功能、操作功能、報表打印功能、組態和編程功能等等。
The operation station is used to display and record the process data from each control unit, and it is the operation interface of human and production process information interaction. Typical operation station includes host system, display device, keyboard input device, information storage device and print output device, which mainly realizes powerful display function (such as analog parameter display, system status display, multiple screen display, etc.), alarm function, operation function, report printing function, configuration and programming function, etc.
另外,DCS操作站還分為操作員站和工程師站。從係統功能上看,前者主要實現一般的生產操作和監控任務,具有數據采集和處理、監控畫麵顯示、故障診斷和報警等功能。後者除了具有操作員站的一般功能以外,還應具備係統的組態、控製目標的修改等功能。從硬件設備上看,多數係統的工程師站和操作員站合在一起,僅用一個工程師鍵盤加以區分。
In addition, DCS operation station is divided into operator station and engineer station. From the perspective of system function, the former mainly realizes the general production operation and monitoring tasks, and has the functions of data acquisition and processing, monitoring screen display, fault diagnosis and alarm. In addition to the general functions of the operator station, the latter should also have the functions of system configuration and control target modification. From the point of view of hardware equipment, the engineer station and operator station of most systems are combined, and only one engineer keyboard is used to distinguish them.
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