Mining is a high-risk sector, China is currently producing coal million tons of mortality rate significantly higher than the international average.
In recent years the mining enterprises frequent serious production safety incidents, to the countries and peoples by the enormous loss of life and property. As the State and Government on the mining industry's growing production safety, enterprise security and reliable communication system has also been listed as all the work. The present underground mine communication system using a fiber optic cable of programmes, PHS (PHS) and CDMA, etc, but has its own disadvantages: cable programme track laying expensive, long construction period, sometimes because the River mountain range wait disorder is difficult to set up cables, and susceptible to damage, and does not support mobile communication. PHS (PHS), CDMA, and other wireless systems equipment is expensive, and bandwidth is relatively low, the actual data upload speed in 60kbps ~ 150kbps. In this way bandwidth for video streaming, etc. larger amount of data transferred Basic is not possible, the system must be designed for video encoding and the network flow control parts special optimization. In addition, the layout of the base station also need a wired network support, part of the wired network weaknesses still exist. Recently, Shanghai, a wireless broadband product manufacturers — create communications Atlas, based on wireless MESH router for mining industry developed a superior, reliable quality, comprehensive mine wireless broadband communication systems programme, meet a mining unit of safe production monitoring, mobile voice communications, personnel, equipment location, high-speed data transmission, Office Automation, and other business information communication needs. Programmes are summarized as follows: as shown in the figure a, contains six mining scenario, integrated video monitoring, voice communications, personnel and equipment positioning and many other applications. More wireless MESH router wireless transmission backbone network, replaced the traditional wired network. Vehicle configuration camera and on-board wireless terminals, video information and location information through real-time vehicle-mounted wireless terminal return to the monitoring center, monitoring center based on the feedback of information to dispatch vehicles. Mine's staff can be equipped with handheld terminals, you can implement voice communication and location capabilities. In the event of an accident, the system can quickly navigate to the location of the personnel. Figure 1 a scene to hang fixed wireless monitoring and control, use the wireless MESH router back to video information and methane, carbon monoxide, temperature sensor information, in monitoring centre can immediately get the hang of things, when an exception occurs, and respond in a timely warning. Scene 2 to transporting slag car wireless surveillance, using wireless vehicle terminal back to video and location information, in monitoring centre can immediately see the migration and residue car operation, gets the current position to facilitate the scheduling of vehicles. Scene 3 to transport vehicle wireless surveillance, using wireless vehicle terminal back to video information, position information and voice, in the monitoring center you can get a real-time vehicle operation and location information, you can speak with the driver in real time. Scene 4 to trenches safety production supervision, the staff in the trenches by handheld terminal with other people or command center, and other communications. Command center real-time understanding of the work site, ensure production safety. And you can navigate to the staff. Scene 5 to command center through video and voice to monitoring and scheduling production jobs. Scene 6 to emergency site, you can return by on-board equipment for video and voice command center to understand the situation, and on-scene command and scheduling. The wireless communication system, based on wireless broadband transmission patent technology, with high bandwidth and support for multiple services, point to multipoint communication, engineering installation convenient, can be perfectly applied to the mining industry's safety requirements.
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