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              DCS基本結構的特點介紹

              2021-10-27 12:57:47 來源:http://www.eboudy.com/ 53

              系統主要有現場控制站(I/O站)、數據通訊系統、人機接口單元(操作員站OPS、工程師站ENS)、機柜、電源等組成。系統具備開放的體系結構,可以提供多層開放數據接口。
              The system is mainly composed of field control station (I / O station), data communication system, man-machine interface unit (operator station OPS, engineer station ENS), cabinet, power supply, etc. The system has an open architecture and can provide multi-layer open data interfaces.
              硬件系統在惡劣的工業現場具有高度的可靠性、維修方便、工藝先進。底層漢化的軟件平臺具備強大的處理功能,并提供方便的組態復雜控制系統的能力與用戶自主開發專用高級控制算法的支持能力;易于組態,易于使用。支持多種現場總線標準以便適應未來的擴充需要。
              The hardware system has high reliability, convenient maintenance and advanced technology in harsh industrial sites. The bottom Chinese software platform has powerful processing functions, and provides the ability to easily configure complex control systems and the support ability of users to independently develop special advanced control algorithms; Easy to configure and use. Support a variety of fieldbus standards to meet the needs of future expansion.
              系統的設計采用合適的冗余配置和診斷至模件級的自診斷功能,具有高度的可靠性。系統內任何組件發生故障,均不會影響整個系統的工作。
              The design of the system adopts appropriate redundancy configuration and self diagnosis function from diagnosis to module level, with high reliability. Failure of any component in the system will not affect the operation of the whole system.
              浙大中控DCS卡件
              系統的參數、報警、自診斷及其他管理功能高度集中在CRT上顯示和在打印機上打印,控制系統在功能和物理上真正分散, DCS整個系統的可利用率至少為99.9%;系統平均無故障時間為10萬小時,實現了核電、火電、熱電、石化、化工、冶金、建材諸多領域的完整監控。
              The parameters, alarm, self diagnosis and other management functions of the system are highly concentrated on CRT display and printer printing. The control system is truly decentralized in function and physics, and the availability of the whole DCS system is at least 99.9%; The average trouble free time of the system is 100000 hours, which realizes the complete monitoring in many fields such as nuclear power, thermal power, petrochemical, chemical industry, metallurgy and building materials.
              域”的概念。把大型控制系統用高速實時冗余網絡分成若干相對獨立的分系統,一個分系統構成一個域,各個域共享管理和操作數據,而每個域內又是一個功能完整的DCS系統,以便更好地滿足用戶的使用。
              Domain &amp; rdquo; The concept of. The large-scale control system is divided into several relatively independent subsystems with high-speed real-time redundant network. One subsystem constitutes a domain, each domain shares management and operation data, and each domain is a DCS system with complete functions, so as to better meet the use of users.
              網絡結構可靠性、開放性及先進性。在系統操作層,采用冗余的100Mbps以太網;在控制層,采用冗余的100Mbps工業以太網,保證系統的可靠性;在現場信號處理層,12Mbps的PROFIBUS總線連接中央控制單元和各現場信號處理模塊(I/O模塊)。
              Network structure is reliable, open and advanced. In the system operation layer, redundant 100Mbps Ethernet is adopted; In the control layer, redundant 100Mbps Industrial Ethernet is adopted to ensure the reliability of the system; In the field signal processing layer, 12mbps PROFIBUS bus connects the central control unit and each field signal processing module (I / O module).
              標準的Client/Server結構。有的DCS的操作層采用Client/Server結構。
              Standard client / server structure. The operation layer of some DCS adopts client / server structure.
              開放并且可靠的操作系統。系統的操作層采用WINDOWS NT操作系統;控制站采用成熟的嵌入式實時多任務操作系統QNS以確??刂葡到y的實時性、安全性和可靠性。
              Open and reliable operating system. The operating layer of the system adopts Windows NT operating system; The control station adopts the mature embedded real-time multitask operating system QNS to ensure the real-time, security and reliability of the control system.
              標準的控制組態軟件。系統采用IEC61131-3標準的控制組態工具,可以實現任何監測、控制要求。
              Standard control configuration software. The system adopts the control configuration tool of IEC61131-3 standard, which can realize any monitoring and control requirements.
              可擴展性和可裁剪性,保證經濟性。
              Scalability and tailoring to ensure economy.
              網絡構架
              Network architecture
              通常DCS系統的網絡架構由3部分組成(不計現場儀表層),從上到下依次為管理網(MNET)、系統網(SNET)、控制網(CNET)。其中系統網和控制網都是冗余配置,管理網為可選網絡。系統網絡架構如圖4-1-1所示。
              Generally, the network architecture of DCS system consists of three parts (excluding the field instrument layer), which are management network (Mnet), system network (snet) and control network (CNET) from top to bottom. The system network and control network are redundant configurations, and the management network is an optional network. The system network architecture is shown in figure 4-1-1.
              圖4-1-1 分散控制系統DCS典型網絡構架圖
              Figure 4-1-1 typical network architecture of DCS of distributed control system
              管理網絡(MNET)
              Management network (Mnet)
              由100/1000M以太網絡構成,用于控制系統服務器與廠級信息管理系統(Real MIS或者ERP)、INTERNET、第三方管理軟件等進行通訊,實現數據的高級管理和共享。管理網絡層為可選網絡層。
              It is composed of 100 / 1000m Ethernet network, which is used for the communication between the control system server and the plant level information management system (real MIS or ERP), Internet, third-party management software, etc., so as to realize the advanced management and sharing of data. The management network layer is an optional network layer.
              系統網絡(SNET)
              System network (snet)
              由100/1000M高速冗余工業以太網絡構成,用于工程師站、操作站、現場控制站、通信控制站的連接,完成現場控制站的數據下裝??煽焖贅嫿ㄐ切?、環型或總線型拓撲結構的高速冗余的安全網絡,符合IEEE802.3及IEEE802.3u 標準,基于TCP/IP 通訊協議,通訊速率100/1000Mbps 自適應,傳輸介質為帶有RJ45連接器的5類雙絞線。
              It is composed of 100 / 1000m high-speed redundant Industrial Ethernet network, which is used for the connection of engineer station, operation station, field control station and communication control station to complete the data download of field control station. It can quickly build a high-speed redundant security network with star, ring or bus topology, comply with IEEE802.3 and ieee802.3u standards, based on TCP / IP communication protocol, communication rate is 100 / 1000Mbps adaptive, and the transmission medium is class 5 twisted pair with RJ45 connector.
              控制網絡(CNET)
              Control network (CNET)
              采用冗余現場總線與各個I/O 模塊及智能設備連接。實時、快速、高效地完成與現場通訊任務,傳輸介質為屏蔽雙絞線或者光纜。
              Redundant fieldbus is used to connect with each I / O module and intelligent equipment. Complete the field communication task in real time, quickly and efficiently, and the transmission medium is shielded twisted pair or optical cable.
              以上就是浙大中控DCS卡件http://www.eboudy.com為大家介紹的內容,感謝您在百忙之中查看我公司的信息內容,如果您想要了解的更多,歡迎您來電進行咨詢!
              The above is the central control DCS card of Zhejiang University http://www.eboudy.com Thank you for checking the information of our company in your busy schedule. If you want to know more, you are welcome to call for consultation!
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