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Design and Realization of the Real-Time Database Interface Based on OPC

Author: SongHongJun
Tutor: LuXinMing
School: Shandong University of Science and Technology
Course: Computer Software and Theory
Keywords: OPC Component Object Model OPC specification Real-time database Concurrency Control
CLC: TP311.13
Type: Master's thesis
Year: 2010
Downloads: 315
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Abstract


The rapid development of the field of industrial control , and time requirements more stringent application needs , unable to adapt to the requirements of certain areas of the traditional database , real-time database system ( RTDBS ) came into being . Simple integration of real-time database system is not real - time system and the traditional database system , it requires not only the database to support the sharing of large amounts of data , maintaining data consistency , completeness, real-time processing to support its affairs with data timing constraints . OPC ( OLE for Process Control for Process Control object connected with embedding ) is based on an open interface standard defined by the OLE / COM / DCOM ( Object Linking and Embedding / Component Object Model / Distributed Component Object Model ) technology , solve hardware upgrades, hardware and software compatibility and heterogeneous systems interconnection . This paper describes the development of OPC technology and real-time database technology and applications . Focusing on description of the OPC Specification the OPC interface technology , the the OPC core technology --COM/COM technology , the characteristics of the real-time database concurrency control . The real-time database technology and the OPC interface technologies , through the analysis of the characteristics of the real-time database , function and application environment, given the OPC - based real-time database model structure and architecture design ideas , the specific design of the software structure of the real-time database , based on the idea of \Details the OPC interface design and implementation, in order to communicate with a variety of on-site equipment to provide local and remote customer service, real-time database to meet the system requirements, must in RTDB Software system design and OPC server and OPC client functions. OPC server structure , the basic function , the need to implement the interface specific , detailed information on the implementation process of the OPC server and OPC client , Finally, the paper by the simulator OPC server and OPC client - side were tested. OPC technology with real-time database technologies will provide a good platform for the enterprise production and management , its application is increasingly widespread , supported by the manufacturers , and has broad prospects for development .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Programming > Database theory and systems
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