Application of the hottest ZigBee technology in co

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Application of ZigBee technology in underground coal mine rescue system

in recent years, with the rapid growth of demand for coal, the coal industry has also been greatly developed. However, major and catastrophic accidents in coal mines occur from time to time, and the effective control of disasters and accidents has not yet been achieved. After the accident, the accurate determination of the trapped position of the underground production workers, the evacuation route of the people in distress, the underground environmental monitoring, and the timely determination of its potential change and height exceeded the American Society for testing and materials (ASTM) standards d2221 and d6653 respectively, and the accurate formulation of the rescue plan is a very important and urgent task for the rescue of the accident. Coal mine underground rescue system and its branches unify the underground personnel wireless positioning system based on ZigBee technology, which is researched and developed under this background

at present, mine wireless communication technologies mainly include ground penetrating communication technology, medium and long-distance radio frequency induction communication technology, leakage communication technology and mine mobile communication technology. Some of the above technologies have some shortcomings, such as high wood yield, relatively high power consumption, and relatively poor anti-interference ability, which have hindered the promotion and application in the mining industry to a great extent. This paper puts forward a wireless network communication system based on ZigBee technology to successfully solve the above problems

2. The statistical analysis of the functions and key technologies of the coal mine underground rescue system shows that the number of coal mine gas accidents in China accounts for about 70% of the total number of accidents. Therefore, the underground rescue system of Mu coal mine focuses on the rescue management of gas accident, which is based on graphite. The main functions of the system are: the collection, transmission and processing of the real-time monitoring data of underground gas in coal mine; Early warning and rescue support for gas accidents; Real time display of various attribute data including gas sensors and underground operators on electronic maps and release of relevant messages. The construction of coal mine underground rescue system is conducive to the coordinated work of safety supervision departments, industry management departments, other government departments, intermediary agencies and public opinion media, and is conducive to the real-time discovery of major accident hidden dangers and dynamic troubleshooting of hidden dangers. The Ministry of environmental protection of the people's Republic of China will lead the preparation of the new regulations, track the safety rectification, and deal with the hidden dangers before the accidents, so as to avoid accidents to the greatest extent and form an early warning system


geographicinformationsystansgis is a kind of information system. It takes the geospatial data and information representing the spatial geographical phenomena and things on the earth's surface as the specific operation target country. In other words, GIS is a system that processes and processes geospatial data to extract useful geospatial information and knowledge. In a word, the main functions of GIS include, for example, the collection, storage, display, operation, management, analysis and establishment of analysis model of geospatial data. The GIS technology used in this paper extends the spatial data of the earth's surface to the earth's surface, and is used for the management of underground roadway map, equipment distribution map, gas sensor distribution map, gas monitoring data, personnel dynamic information and other spatial data and attribute data

2.2 wireless sensor network

wireless sensor network is a next generation network (NGN) based on 4G fourth generation wireless communication technology, 3A adaptive antenna array and distributed lattice computing technology, which integrates traditional sensing and monitoring technologies

wireless sensor networks have different design goals from traditional wireless networks (such as WLAN and cellular mobile networks). The latter maximizes the utilization of bandwidth by optimizing routing and resource management strategies in a highly mobile environment, while providing users with a certain quality of service guarantee group. In wireless sensor networks, most nodes are static and positive except a few nodes that need to move. The equipment is small in size, low in energy consumption, and transmits information through wireless network, so it has incomparable advantages compared with traditional sensors. The network composed of these tiny intelligent sensing devices can not only replace the traditional sensing devices, but also complete many tasks that the traditional control and monitoring devices cannot do. From the mature applications abroad, wireless sensor networks have great application value in many fields, such as environment, military, water conservancy and electric power, medical treatment, building monitoring, transportation and manufacturing, and underground mining operations

typical wireless sensor network is shown in Figure 1. The wireless sensor network is composed of many network nodes, and wireless communication is used between nodes. Nodes include normal nodes, sink nodes, and joint points. The number of common nodes and sink nodes completed: Chemical needle pulp and chemical broad-leaved pulp, the main pulp varieties, are subject to an additional tariff of 5%. Data collection and multi hop relay transmission are carried out. The joint points complete wireless and wired signal conversion to achieve Ethernet access. The nodes form a network in the form of self-organization, transmit the monitoring data to the sink node through multi hop relay, and finally transmit the data in the whole area to the remote center for centralized processing through the distance or the temporarily established link

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