| With the development of Chinese economy, Safety accidents occur constantly. In the working actions of multinational company, safety surveillance and controlling system has attracted fully attention. To protect the high-speed development of company, safety surveillance and controlling system which fits modern working line well is really in need to supervise and control working actions anytime and anywhere.This paper introduces the principle, the function, the constitutes and the classification of computer safety surveillance and controlling system based on field bus, and the working mode of field bus system has been explained, which are roll-call polling, roll-call passing, ALOHA, CSMA and CSMA/CS. According to the safety management of modern working line of QingDao saint-gobain hanglas glass company, bring out the structure of web based digital video surveillance and controlling system. At the same time the method of finite-scheme and multi-global decision-making has been applied to the safety intelligent decision-making of the spot and make expound of the research and design of web based digital video surveillance and controlling system. According to the contents of this paper, the main parts of the digital video controlling and digital video server in the digital video surveillance and controlling system have been designed and developed. And this paper has made the specification of how to carry out DVS, DVR and DVC design method , thought and the key technique . |