The Research And Implementation On Architecture Of Distributed IP Dispatching System

For the problems of traditional emergency commanding and dispatching system, this thesis researches the implementation techniques of the distributed dispatching system based on IP, and mainly discusses the implementation techniques of dispatching service based on B/S mode. Then the thesis completes the development of emergency commanding and dispatching system which handles the elevator failure by applying the techniques to the project.Firstly, this thesis researches the demand of emergency commanding and dispatching system, and points out the problems brought by single communication model after discussing the techniques and products of popular dispatching system. Based on that, the thesis introduces the multi-modes dispatching system, which is quite popular and converges the wire-wireless techniques and the private-public network. Then the thesis discusses the service demand of multi-modes dispatching system and presents techniques based on B/S mode to implementing the convergence of multi-network and multi-terminals under distributed IP environment. The implementation techniques of calling control based on B/S mode, the techniques of calling trigger, the techniques of push service, the techniques of user status presentation, and the techniques of user information management are deeply researched and offered by this thesis. These techniques implement the integration of subsystem, which makes up of the architecture of distributed IP dispatching system.Finally, the application of using the techniques discussed above in development of emergency commanding and dispatching system which handles the elevator failure is introduced. This thesis shows the deployment and running status of the system, and presents the communication process between different terminals and network by using dispatching server. The result has proved the feasibility of techniques obtained by researching and implemented the anticipative purpose.