The Design Of Coal Mine Safety Intelligent Monitoring Substation

Coal mine safety monitoring and control is an important means to ensure mine safety production, is an important technical measure of modern coal mine management. The monitoring system is directly related to the safe production of the coal mine can be.The monitoring system is mainly composed of a ground station and underground mine monitoring substation is composed of two parts. The center of the ground station is the main function of the realization and Underground Monitoring Sub-station communications and as a terminal display platform directly with the management of information exchange.Underground station (substation) in various underground sensor equipment and ground monitoring master station, underground safety monitoring module and ground safety monitoring center transport hub, is responsible for the underground environmental information data collecting and processing, and through the bus network and ground center station communicates. Mine monitoring substation can work effectively determines the coal mine safety monitoring system can be realized, the coal mine safety monitoring plays an important role in. This paper is the design of mine safety monitoring and control system of underground substation part.The issue of the design of mine monitoring substation" based on optical fiber sensor for coal mine safety monitoring and early-warning system" is an important part of. Based on the study of coal mine industry related to national standards and industry standards based on the design of mine monitoring substation, the overall scheme. In the aspect of hardware design, designed to meet the functional requirements of mine monitoring substation and in accordance with the relevant standard of overall system hardware circuit. The circuit with C8051F020MCU as the main control chip, through its peripheral hardware circuit design, to achieve the following functions:Intelligent monitoring and control substation of coal mine underground various kinds of sensors the frequency of the transmission signal and the current signal is converted to a frequency signal, unified, into the microcontroller for processing analysis, access to all kinds of detected values of the sensors, through the digital display circuit display real-time detection value, and uses the RS485bus, monitoring data will be transmitted to the host computer terminal. Monitoring station will also be on the detected value judgments, using two level alarm mode to realize the danger signal of warning, greatly eliminating" alarm" and" false alarm" phenomenon, enhance the whole system's safety, reliability and stability. Monitoring substation according to risk signal control coal mine large equipment has stopped, will give an alarm signal, infrared remote set alarm threshold.The innovation of this paper lies in the compatibility for signal acquisition mode, and for the" alarm" and" false alarm" phenomena in two level alarm mode design.