井下无线Mesh网络导航系统的设计与实现

摘要

井下工作人员时时受到水灾、瓦斯爆炸和有害气体泄露等事故的威胁，为了在发生事故时便于工作人员搜救，常常需要配备定位导航系统。但现有的定位导航系统主要基于地上环境，而井下环境错综复杂，一般的定位导航系统已不再适用。本文根据井下特殊的无线信道环境，基于无线Mesh网络协议，设计了一款适用于井下的定位导航系统。该系统通过设备的接收信号强度（RSSI）并结合无线设备接入点（MAP）的基本服务识别码，对作业人员定位。在此基础上，基于eSuperMap开发平台研发了电子地图基本操作、路径导航、最短路分析和相关信息查询等功能，并在S3C2400上进行了模拟井下环境的功能演示，验证了该定位与导航系统在井下环境优异的效果，基本实现了预期功能。%Underground staff always be threatened with flood, gas explosions, hazardous gas leaking and other accidents. For the purpose of facilitating the work of searching and rescuing personnel in the event of an accident, they often need to be equipped with navigation system. However, the existed navigation system based primarily on the earth, neglecting the complicated underground environment, so the general positioning and navigation system is no longer applicable. According to underground radio channel environment and Mesh network protocol, a suitable underground positioning and navigation system is designed. The system combined the received signal strength of the device and the basic service set identiifer of the network access point device (MAP), positioning the workers. Using eSuperMap development platform and WinCE embedded operating system, complement the navigation of underground workers on the basis of positioning. It also includes an electronic map operations, information, path analysis and navigation functions. Featured presentations on the S3C2400 which simulated the underground environment. Basically achieve the desired functionality, make convenience for location and navigation.