The Research And Design On Stray Current In Coal Mine Monitoring System Of Zigbee Network

Stray current underground coal mine brought great potential safety hazard in coal minesafety production, especially coal mine production line and the area near coal mine tractionlocomotive is the hardest hited areas by stray current, also is the key area to prevent。Therefore, in view of the Complex monitoring environment with strong interferences anddynamic changes at coal mine working face ZigBee network is put forward for the straycurrent in coal mine monitoring system with the combination of wireless sensor networktechnology，and using Stochastic resonance method for detection of stray current in view ofthe strong interference environment。The main work is as follows：Firstly, analysis of the coal face environmental, ZigBee network monitoring system isdesigned for the stray current in coal mine. This paper describes several stray current testingmethods in detail, to compare their advantages and disadvantages and applicable occasions,choose the best stray current detection method. In the face of complex, strong interferenceenvironment, in order to determine the method of stochastic resonance noise energy usecharacteristics such as enhanced signal energy stray current detecting weak signals.Secondly, a detailed analysis,compare to the stochastic resonance method of signalfrequency is greater than1, designed the solution to Modulate the SR parameter K andcarried on the simulation, completed the hardware circuit design and debugging of theprogram, and verified.Again, combined both dynamic working environment and the wireless sensor networktechnology, the analysis of ZigBee network protocol in each layer, the ZigBee technology ofad-hoc network, low power consumption, low latency and low cost advantage is introducedinto the monitoring system, to overcome the difficult problems such as difficult wiring, linemaintenance. By forming a ZigBee network, using network can realize single jump, jump, etcdata transmission, improve the reliability of data transmission.Finally, Finally, the Ethernet type of embedded gateway will industrial Ethernet physical connection with ZigBee network, completed the design of embedded gateway based on theWinCE platform, has realized the ZigBee network and external network real-timecommunication and data transformation, and has carried on the system test, analysis of theexperimental results.