Research On The Navigation System Of Underground Trackless Rubber-tyred Equipment

The mining industry is the basic industry of national economy, while china mining industry is mostly underground mining. Because underground geologic condition is complex, it exists a great hidden accidents. For example, some tunnels reach thousands of meters, the equipment are dispersed and mobile, and the space of tunnels and mining region is narrow, etc. These problems make staff know their current location and surrounding environment facilities with difficulty. Moreover, a lot of people demand increasingly for positioning and navigation service owing to the successful application of GPS, and expect to transplant GPS into underground mine. There is a problem that GPS signal can not penetrate through the earth’s surface because of the restriction of geological condition. So the radio frequency identification (Its abbreviation is RFID) has been getting more and more consideration to be the optimal selection for indoor positioning technology due to its advantages of non contact, non line of sight, low cost, matured and so on.In recent years, the research on the method of RFID indoor positioning has made a great progress. It can be generally divided into two categories. One is the positioning method based on measuring distance, the other based on scene analysis. In this paper, both of positioning methods were introduced in detail. Then did the in-depth study for positioning method based on scene analysis. It proved that the design method on the basis of scene analysis is feasible through the application development and testing. In order to reduce the consumption of manpower and material resources, the positioning method based upon scene analysis has been improved by using kriging interpolation technique. The improved scene analysis positioning method has been served as the positioning method suited for the design.This paper has designed overall structure of the navigation system and constructed each subsystem after determined the positioning method. Then, this paper has completed the design of navigation system’s hardware structure through the reasonable construction of network subsystem, positioning subsystem, voice subsystem, video subsystem and extended signal subsystem. After that, the software of navigation system was designed through the configuration and function design for in-vehicle touch screen of trackless equipment and monitoring interface of the monitoring center, so comprised a integrated underground trackless rubber-tyred equipment navigation system. The design has solved the traditional positioning mode which merely "remote look", and achieved visualization, auralization, communicative, identification. It is beneficial for the driver to drive trackless equipment safely, orderly and effectively, and also conducive for supervisors to do reasonable scheduling and effective management.