【摘要】：虛擬DCS在計算機系統(tǒng)中重現(xiàn)了用于工業(yè)自動化的真實DCS控制系統(tǒng),給DCS運行人員提供設計調(diào)試、險情演練、檢測診斷的仿真環(huán)境。本課題中,虛擬DCS由虛擬DPU、仿真HMI組成。如何實現(xiàn)計算機系統(tǒng)中虛擬DCS的標準化通信,是構(gòu)建虛擬DCS系統(tǒng)的關(guān)鍵問題。 OPC是一個工業(yè)通信標準,它定義過程控制數(shù)據(jù)如何在軟硬件應用中傳輸。為工業(yè)自動化軟件面向?qū)ο蟮拈_發(fā)提供了統(tǒng)一的標準。這個標準定義了應用微軟操作系統(tǒng)在基于PC的客戶機之間交換實時數(shù)據(jù)的方法。 本文以虛擬DCS為背景,對OPC技術(shù)在虛擬DCS標準化通信中應用,展開了較為深入的研究,為虛擬DCS設計了基于OPC技術(shù)的標準化通信方案。根據(jù)OPC數(shù)據(jù)存取3.0版定制接口規(guī)范,使用Visual Studio2010開發(fā)工具,應用COM技術(shù)和C++語言開發(fā)了面向虛擬DPU的OPC服務器,針對特定數(shù)據(jù)源(虛擬DPU)的數(shù)據(jù)訪問中關(guān)鍵技術(shù)展開研究并設計解決方案。在OPC服務器內(nèi)部添加了虛擬DPU數(shù)據(jù)緩存區(qū),引入進程間通信技術(shù)設計了訪問虛擬DPU的數(shù)據(jù)通信接口,采用消息機制實現(xiàn)OPC服務器內(nèi)部虛擬DPU數(shù)據(jù)存儲區(qū)實時數(shù)據(jù)更新,實現(xiàn)了在OPC服務器對虛擬DPU數(shù)據(jù)的內(nèi)部嵌入。OPC客戶端通過標準化OPC接口訪問虛擬DPU。利用人機界面組態(tài)軟件開發(fā)虛擬DCS的HMI,通過組態(tài)軟件OPC客戶端完成對OPC服務器與整個虛擬DCS的系統(tǒng)測試,最終實現(xiàn)了HMI對虛擬DPU的數(shù)據(jù)訪問與無縫連接,實現(xiàn)了信息共享與虛擬DCS標準化通信。 本文以虛擬DCS系統(tǒng)開發(fā)為背景,應用OPC技術(shù)實現(xiàn)了虛擬DCS的標準化通信,經(jīng)驗證達到了較好的實現(xiàn)效果,為OPC技術(shù)在工業(yè)自動化系統(tǒng)的應用提供了較強的參考價值。
[Abstract]:Virtual DCS reproduces the real DCS control system for industrial automation in the computer system, and provides DCS operators with a simulation environment of design and debugging, danger drill and detection and diagnosis. In this paper, virtual DCS is composed of virtual DPU, simulation HMI. How to realize the standardization communication of virtual DCS in computer system is the key problem of constructing virtual DCS system. OPC is an industrial communication standard that defines how process control data is transmitted in software and hardware applications. It provides a unified standard for object-oriented development of industrial automation software. This standard defines a method for using Microsoft operating systems to exchange real-time data between PC-based clients. In this paper, based on virtual DCS, the application of OPC technology in virtual DCS standardization communication is studied deeply, and a standardized communication scheme based on OPC technology is designed for virtual DCS. According to the custom interface specification of OPC data access version 3.0, a virtual DPU-oriented OPC server is developed by using Visual Studio2010 development tool, COM technology and C language. The key technology of data access for specific data source (virtual DPU) is researched and the solution is designed. The virtual DPU data cache area is added to the OPC server, and the data communication interface to access the virtual DPU is designed by introducing the technology of inter-process communication. The real-time data update of the virtual DPU data store within the OPC server is realized by using the message mechanism. The embedded virtual DPU data in the OPC server is realized. The client access the virtual DPU. through the standardized DPU. interface. The HMI, of virtual DCS is developed by man-machine interface configuration software. Through the configuration software OPC client, the system test of OPC server and the whole virtual DCS is completed. Finally, the data access and seamless connection of HMI to virtual DPU is realized. The standardized communication between information sharing and virtual DCS is realized. In this paper, based on the development of virtual DCS system, the standardized communication of virtual DCS is realized by using OPC technology. It is verified that the standard communication of virtual DCS has achieved a good result, which provides a strong reference value for the application of OPC technology in industrial automation system.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP334.7

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