Research And Development Of Environment Detecting Subsystem For Mine Emergency Rescue

The task of mine emergency rescue becomes more and more arduous because of frequent occurring of mine disaster in recent years. The Environment Detecting Subsystem for Mine Emergency Rescue proposed by the dissertation mainly studies the real-time detection of environment parameters. The Subsystem realizes how to gather, display, store and transmit the environment parameters of underground mine disaster scene in real time, and will give an alarm when the parameters go beyond limited.The dissertation proposes that the environment parameter including methane, carbon monoxide, oxygen and temperatures should be detected according to the requirement of mine emergency rescue environment. The Subsystem is composed of Environment Parameter Gathering Front-end, Underground Detection Base, Ground Detection Center. The dissertation introduces design of each module's hardware circuit and software program adopted modularization thinking in Front-end and Detection Base. Hardware part consists of parameter gathering and processing module, SDSL communication module, serial communication module, intrinsical security power source module, network switch module and embedded intrinsical security computer module. Software part includes parameter gathering module, parameter transmitting module, parameter dynamic display module etc.The Subsystem adopts an integration of"lay and play"symmetrical digital subscriber line (SDSL) technology, TCP/IP and self-organizing technology,transmits digital signal in high data rate through a twisted pair cable for mine. The Subsystem powered by Li-battery can transmit the correct and real-time environment parameters of underground mine disaster scene to the Underground Detection Base and Ground Detection Center.The subject developes a suit of sample Subsystem instruments ultimately. The author tests the Front-end and Detection Base separately. The online test for the Subsystem is introduced, too. Result of practical operation manifests: the detection precision of temperature parameter is 0.1℃; detecting function of the other three gas parameters works well; all the key-presses on the control panel work in effect after pressed 0.5s; the time of power supply exceed 8 hours; SDSL communication works well; software interface of instruments displays well.The Subsystem achieves demand of anticipated design.