The Design And Implementation Of Mine Pit Synthesizes Automation System

Through analyzing the researching status of underground wide-bandwidth communication network and the application of safety monitoring system in the world for coal mine, this thesis proposes a practical design scheme and fundamental principle of the Mine Integrated Services Digital Network (MISDN) for the first time. The structure model and key technique of this digital network are studied thoroughly. The communication mode of MISDN and the underground wide-bandwidth communication system are discussed. It is suggested that the industry Ethernet network technique be the best selection for the digital network application. According to the characteristics of transmitting message of ground and underground in coal mine, a resource-reserved protocol (RSVP) is first used in this digital network.This article main content:1,Based on thoroughly analyzing the monitoring system in the world, this thesis describes the status and the problems existing in the systems of safety monitoring in coal mine, and presents the key technology that must be solved for the buildup of mine multimedia integrated services digital network(MISDN).2,With the use of fiber communication technology, MISDN construct a 100Mbps high-speed network platform on which image, voice and video can be transmitted. With the opening communication protocol, it can provide interfaces for all kind of monitoring systems, which can provides Information Super-high Way for coal mines.3,In this thesis, the design principle of MISDN is proposed as well as its system functions and model.4,The features of MISDN are introduced including the differences between MISDN and ISDN. The message transferring in MISDN is analyzed, 100Mps Ethernet is used to construct MISDN.5,Taking sihe coal mine as an example, MISDN network structure is analyzed in this thesis. According to special situations in mine, FHAN (Fiber Hybrid Access Network) is used as the structure of MISDN.