【作者】 史非；

【导师】 陈星；

【作者基本信息】 大连理工大学 ， 机械电子工程， 2008， 硕士

【摘要】 随着网络技术的飞速发展和企业信息化的推进,将传统的监控系统与Web技术相结合的B/S(Browser/Server)模式计算机远程监控系统逐渐成为新的研究和开发热点,构建基于Web的工业监控系统成为工业监控领域发展的方向之一。远程监控系统的研究对于企业降低生产成本,提高劳动生产率以及增强企业的综合竞争实力等方面都具有十分重要的意义。论文首先回顾和介绍了监控技术的发展历史和研究现状,分析了网络远程监控系统的层次结构,提出了基于Web的远程监控系统的体系结构,并对以往低压配电监控系统的功能、层次以及实现方案进行了较深入的研究和探讨,通过对不同网络模式的比较,确立了B/S模式的远程实时监控系统方案。然后,从系统集成的角度出发,结合低压配电网络信息系统的实际需求,讨论了B/S模式实时监控系统的关键技术,主要包括ASP.NET动态网页开发技术、Web数据库访问技术、XML与XmlHttp技术、网络安全技术等。系统采用Visual Basic 6.0和SQL Server 2000开发与数据库相结合的现场通信软件模块,采用ASP.NET开发Web服务页面。实现了建立在本地现场网络数据采集及监控功能基础之上的低压配电监控远程信息发布,同时给出了关键技术的解决方案并验证了系统的有效性。系统主要实现了集现场通信网络与远程控制网络于一体的低压配电远程监控系统。现场通信网络通过现场通信软件模块主要实现了基于Modbus协议的RS485总线通信、数据采集、解析、存储以及接收外部控制命令等功能,为远程控制网络提供必要的服务,另外,还具有方便本地系统管理员控制管理的一些辅助功能;远程监控网络主要通过关键技术的研究以及Web服务器软件模块实现了基于Web的远程信息发布,远端客户可以通过IE浏览器进行数据显示、查询、控制等操作。对基于Web的远程监控系统的研究和结合实际项目的开发,达到了课题的最初目标,也在一定程度上弥补了以往低压配电监控系统研究成果中的不足之处,特别是Web技术的引入,使低压配电监控更加集成化和信息化,必将进一步促进工业监控领域的发展。更多还原

【Abstract】 With the rapid development of the network technology and the promotion of enterprise information, the industry supervisory control system based on B/S (Browser/Server) model which combines the traditional remote monitoring system and Web technology attracts more and more attention on research and development. It is one of the developing directions of industry supervisory control field. The research of remote monitoring system is on the impact of decreasing the production costs of enterprises. This technology also has the extremely vital significance in raising the labor productivity and improving the comprehensive competition strength for enterprises.Firstly, the history and researching state of industry supervisory control system is introduced, also the structure of network remote monitoring system is analized. This paper puts forward the structure of remote monitoring system based on Web. Meanwhile, according to the research and discussion of various functions, structures and implement schemes on low-voltage distribution monitoring system in the past, the paper designs a system based on B/S model by comparing different software modes. Then, in terms of monitoring system integration, combined with practical needs of low-voltage distribution monitoring system, the thesis has discussed various kinds of key technology, including ASP.NET dynamic web page, Web-DB accessing, XML and XmlHttp, network security, etc. The system adopts Visual Basic 6.0 and SQL Server 2000 to develop field communication system, and adopts ASP.NET to develop Web server pages. At last, this system has not only realized remote information publishing based on data acquisition and monitoring function of field supervision system, but also given solutions to the key technologies and showed the feasibility of the system.This remote monitoring system of low-voltage distribution integrates field communication network and remote control network. Field communication network mainly realizes the functions of RS485 bus communication based on Modbus protocol, data acquisition, data parsing, data storage, external command receiving by field communication software module. It can provide the necessary servers for remote control network. Moreover, it has some assistant functions for field system administrator. Remote control network mainly realizes remote information publishing based on Web by Web server software module and the research of key technologies. Distal clients can realize some kinds of operations of data displaying, querying and controlling.The development of remote monitoring system based on Web has reached the initial purpose of the subject by integrating a practical project, and also made up for deficiency of research results on low-voltage distribution monitoring system in the past. The introduction of Web technology makes the low-voltage distribution monitoring system more integrated and informative, and further promotes the development of industry monitoring field.更多还原