Research of Design of Coal Mine Emergency Rescue Communication System Based on Wireless Mesh Network
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摘要: 针对矿井应急通信系统存在的呼吸器影响语音清晰度、缺少视频信息、缺少环境参数监测和传输功能等问题，提出了一种基于无线 Mesh 技术的矿井应急救灾通信系统设计方案, 简要介绍了无线 Mesh的基本原理及结构，给出了矿井应急救灾通信系统的组网方式、整体架构和主要设备的设计方案，详细阐述了网络服务质量的保证、无线Mesh网络的动态路由选择、业务准入与控制和音视频流无缝移动传输等关键技术难题及解决办法。实际应用表明，该系统能同时实现井上指挥中心、井下指挥中心和井下救护人员之间的语音和视频通信功能，并能在井上和井下指挥中心实时显示救灾现场的环境参数。Abstract: In view of problems of low definition of voice caused by oxygen device, absence of video information, lack of monitoring and transmitting functions of environment parameters existed in coal mine emergency rescue communication system at present, the paper proposed a scheme of coal mine emergency rescue communication system based on wireless Mesh network. It briefly introduced networking mode and general structure of the system, and gave design approach of primary devices in the system after analyzing principle and topology of the wireless Mesh. It also discussed key technique difficulties such as QoS guarantee, dynamic routing for wireless Mesh network, service admittance and control, seamless mobility of media stream and so on, and put forward their solutions. Practical application shows that the system can offer voice and video communication functions among ground headquarter, underground headquarter and underground rescue technicians, and real-time monitor and display environment parameters at headquarter.
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