Research On Technology Of Collecting And Transmission Of Environmental Parameters

Coal mine safety production accidents and natural calamities occur frequently in our nation,coal mine emergency rescue take great responsibility.Conditional and environmental danger and complexity of disaster-stricken area under coal mine decelerate the development of coal mine rescue telecommunication technology which can not effectively reflect the real circumstance of disaster stricken area during rescue procedure.Therefore,it influences commanding decisions during rescue in certain degree.KTE5 visualized coal mine rescue commanding device,which is produced by Xi'an Sunlane Science and Technology Limited Company,is comparatively advanced domestically. Adopting SDSL transmission technique,this system is avalible laid.But its mainly used in transmission of video and audio.There is no coal mine monitoring system is avaliable in monitoring to enviromental parameters at all time,condition of rescure under coal mine can not be acquired comprehensively,more effective rescure work can not be performed.Therefore, its necessary to update KTE5 visualized coal mine rescure commanding device as emergency rescure device and develop technology of environmental parameters monitoring under coal mine at all time.According to the specialty of disaster-strike area and the traits of traditional KTE5 system ,based on SDSL transmission technology,gas,such as CH4,O2,CO,H2S and environmental temperature detectors are chosen by the system, and it designs the collect-transmit models and environmental parameter display of date terminal.Adopting digital signal process technology and digital video and audio code-decode technology,after collecting and processing environmental parameter data,system uploads that through RS485 preserved by front network video and audio server packed with video and audio data,and digitally transmit to computer under coal mine and portable computer above ground through video and audio transmission lines.It realizes all-time environmental parameters display by using Delphi software developing tool.Based on the traditional functions and traits,system realized detection,display,saving and alarming of various kinds of gas,such as CH4,O2,CO,H2S and environmental temperature. Because system adopts standard RS485 telecommunication, circuit design prepares multiple-channel extensive, other environmental parameters can be easily added to the tests accoding to needs.