| In recent years, coal mine accidents have appeared in the screen press, seriously restricting the development of coal mine safety industry. With the development of network technology and computer technology, security technology has been rapid development, it also gives the safety production of the coal mine into the strong power. At present, the development of the wireless network for flexible monitoring of coal mine provides favorable conditions, solves the problem of routing in special environment of coal mine.This paper is based on the Henan science and Technology Department of the project, in cooperation with Henan Yima coal industry group company, on the basis of domestic coal comparison study on the video monitoring system, combined with the video surveillance system in Yima coal mine, the spirit of saving cost, upgrading the system principle, construction of the terminal by Mesh wireless network as a system terminal video access point data, system upgrades to retain the backbone network of the original, the maximum saving the project cost.This paper first introduces the wireless Mesh network, and describes the system structure of this type of network, and objective analysis of the advantages and disadvantages of using wireless Mesh network, introduces the basic technology of Mesh network.secondly, according to the demand of Changcun coal mine monitoring system, gives the design scheme of the system and network structure. Then, discussed the analysis of key techniques in the system:video compression standard, network transmission protocol and transmission mode; increase the network module for the original camera system; the implementation details of each function module of the system software management server. System realizes terminal camera device management, network video data storage and playback, the system user management and other functions. Finally, the system is designed in this paper are summarized, and put forward the idea of improving the system. |
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