The Analyse Of Web-based Control System

Web-based Control System is based on the integration of Infranet and Intranet. The integrated technique of Infranet and Intranet is described, including network connection, control information browse, real-time control and so on.As the rapid progress of network and information technology, It has led the automation control system to interconnected , full-opend and all-distributed. These idea leads the appearance of Internet, Intranet and Infranet, which can interconnected to realize truly distributed and long-distance control.The thesis mainly focuses on three aspects:1) The analyse of Fieldbus:In order to have more compatibility and easier connected with Intranet and Internet, Ethernet technology would be introduced into fieldbus.2) The analyse of ways to relize control information browsing through internet:There are two ways can relize this function. The first, we can integrate this function in configuration software, for example King or Citect. The second, we can do this through existing software technology, for example ASP with ActiveX or Java with JavaApplet, Javabean.3) Lead the wireless technology of WAP into control systemReal-time control ing and browing in far place with wireless technology is the main purpose we want to relize in the end.I' 11 continually learn other technologies used in related fields.