The Design And Implementation Of Multiform WEB Video Supervision System Based On Java

With the development of computer network and information technology, the traditional concept of regional boundaries has become increasingly vague. With the development of remote monitoring technology, the former monitor method of operating equipments in local place has been far from meeting people's needs. The remote monitoring and control method free from the region and the time becomes the current urgent need.In this thesis, the multiple roles Web-based remote monitoring system uses the programmable logic controller as control terminal, collects and transmits the real-time data and the video through Web server, makes users using Internet / Intranet to achieve the remote monitoring equipment status and real-time data. The system enables customers using the internet to achieve remote monitoring and to test the products. . The thesis gives the structure of the system and builds the system development environment. The thesis focuses on the design and implementation of the real-time monitoring module, custom remote monitoring module and the roles verification module.The real-time monitoring module uses the Timer and JMF technology to realize the timing extraction of the images, solves the flashing problem and the non-continuous display of image through the double buffer technology and multi-threading technology of Java language. The customer overall monitoring module compresses the video to achive a smooth video display, uses JMF and the design of the tables to realize switching the cameras, and realizes the overall monitoring, adds the video saving and camera function to facilitate the analysis and comparison for customers. In order to verify the permissions of multiple roles, this thesis uses Struts to verify the roles of users and realizes jumping the page.