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In this paper, the wireless sensor network (WSN) technology is applied into shear location in the tunnel. Shearer location is vital for automatically mining coal equipment controlling. Node deployment analysis and modeling of RSSI with distance helps to obtain shearer walking distance. Simulated experiment is carried out; and results are as expected. Location accuracy and power detection are also...
Currently in China the level of coal mine roadway roof abscission layer monitoring is low, especially in the most coal mine the transmission and observation of the underground separation data are by manual labor or by cable transmission, there is a high cost for coal mine. This paper introduces a roof abscission layer monitoring system based on ZigBee which is adapting to environment of coal mine...
According to the study of the quantitative analysis on the major hazards of the entity and virtual body in the mine production system, the early warning method of the mine safety production with the mixed-mode of the active and passive way is presented based on wireless sensor networks. In which, applying the ZigBee2007/PRO protocol stack, wireless sensor microcontroller technology and the GIS positioning...
With the rapid development of computer communication and web technology, especially the widely application of wireless sensor and embedded technology, Wireless Sensor Networks (WSNs) have been paid great attention in industry field and our daily life. WSNs based on ARM7TDMI-S CPU and ZigBee device has merit of rapid and simple in networking, node movable in application, abundant information in acquisition,...
Research wireless network protocol ZigBee which is one kind of wireless network technology of short distance, low complexity, low power consumption, low data rate and low cost, including the MAC level, router level, network level, application layer. Clarify network function and network topology structure of ZigBee, analyze superiority of wireless sensor network based on ZigBee. Forecast application...
With the continuous development of technology, it gives a new type system of coal mine safety based on ZigBee technology. Using the characteristics of wireless sensor networks and the mature communication technologies of CAN BUS, it implements real-time monitoring and intelligent warning for underground environment and production parameters. This system is equipped with a low power ARM processor chip...
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