Design Of Distributed Fieldbus Remote Supervise System Based On XML

Currently, fieldbus technology is widely generalized and adopted in many fields such as automation systems, Intelligence-buildings. This new technology changes the structure of manufacture control network, which is the base-level of CMIS/CIPS system. And we can design distributed and intelligent supervise system with high-performance based on the fieldbus technology.Web-related technology is also quickly developed and adopted with the development of fieldbus. Its application changes the conventional framework of automation system, two-level structure of enterprise network and fieldbus network. Remote system management becomes more important because of huge amount of process and configuration data and more than one operating system or hardware platform in large enterprises. Conventional fieldbus supervise system based on OPC technology can't satisfy the dynamic change of system and requirement of expanding. Many scholars and engineering technician at home and abroad pay high attention and are engaged in the research focused on remote fieldbus supervise system based on internet-related technology.According to the requirement of fieldbus remote supervise system, we proposed a new framework of distributed fieldbus remote supervise system based on the Microsoft DNA developing model, which adopted the XML and SOAP technology as communication mechanism of distributed components. And furthermore, we analyses and designs the system framework in detail.The main content of this thesis is as follows:1. Firstly, we make an overview on the characteristics and history of computer supervisory control system. We introduce the fieldbus control system and the advantage of fieldbus supervisory system based on OPC in detail. And we also make a discussion on some problems on applicating OPC technology into remote supervising,which will be settled in this thesis.2. According to the requirement of fieldbus remote supervise system, we proposed a new framework of distributed fieldbus remote supervise system based on the Microsoft DNA developing model,which adopted the XML and SOAP technology as communication mechanism of distributed components. And we introduce the computer-technology that will be applied in the new framework briefly.3. In the thesis, we analyse and design the system framework in detail. We provide unified modeling method for the relation database design. We adopted the ADO to design the data access components. We analyze the function operation ofsystem and design the function-level components in detail. We discard the conventional communication mechanism ,DCOM protocol, and adopt distributed data exchange mechanism based on XML and distributed components communication mechanism based on SOAP protocol. Final we design the use-interface of fieldbus remote supervisory system. Finally, we make a conclusion and propose the future research directions.