Research And Implementation Of The System Of Safety And Monitoring In Coal Mine Production

China is a great nation with rich coal resource.So many coal minds are seattered in the country and provide powerful energy support for the national economy development. But for a long time,the country's coal production has been puzzled by safety problems.In recent years, the status of safety of the coal mine is very austerity.There were many explosions happened,a lot of miners being hurt and the property was damaged. With increasing on security of the masses of the people, mine monitoring software is also emerging like bamboo shoot in spring after raining.However,most of them are face to large and medium-sized coal mine.Because of high cost and high-tech,they are not in favor of small coal mines with a relatively low level of production technology and education.Accordingly,in order to insure the safety of the mine,it is necessary to improve the inspect circumstance in the coal mines. Based on the actual demand of small coal mines,the paper mainly researchs and designs the sub-station hardware and epistatic monitoring system with sixteen-road input and eight-way output.This system is composed of subsystems of signal acquisition,data communication andcentral supervision.The thesis mainly introduces design of each module's hardware circuit and software program adopted modularization thinking. The hardware of monitoring system mainly introduced some of the major components of hardware system and gave the circuit implementation of the system's main modules .Based on micro-controller chip MSP430F135,the system used MAX1480B data communications interface circuits in order to achieve high-speed and long-distance transmission of data; used keyboard showing chip CH451 with serial interface to display real-time data, historical data and various status tables. The hardware of sysem introduced data communications interface circuits, data circuits, power conversion circuit and the circuits of input and output of the collection signal in details. And separately gave the circuit implementations of various circuit.The hardware system can be fitted in bad circumstance of mine,and it has advantage of extending, debugging,fixing,maintenance and current.The software section is the main part of the design.Beginning with the structure and composition, the paper introduces the major modules and their programming thought, and the main contents are as follows:1,Implemented epistatic system software , implemented data coding and data communication of lower sub-station, implemented calculation and transfinite determine about monitoring data, sound and light alarm, and control the power off to unessential safety circuit.2,Implemented real-time display and recording of monitoring data such as analog volume and digital data.At the"analog volume real-time table"and the"digital data real-time table",users can view the fixed-position sensor's records about real-time alarm and power off. Users can make historieal data in quiry and historieal waveform inquiry at the"data inquiry"and"historieal waveform"interface. Then the detailed historical data can provide users with the first-hand information of security.3,Users can also observe the real-time dynamic working scene at the"working scene"interfaee in order to know the location of alarm and power off more intuitively.4,In accordance with the general control requirements of monitoring system,the system implemented remote control, asynchronous control and local control.By controlling the power on or off with different ways,the system can avoid accidents maximum. Based on Visual Basic development platform,the monitoring system used modular design idea,with a lot of advantages,such as low cost,short development eycle,strong scalability,easy to transplant and install,database maintenance easy and so on. These advantages is convenient to modify and add other functions of system in the future. It has provided a new thero and design for the monitoring system of coal mine production. It is a combination of a wide range of technology, and is the embodiment of the wider use and further development of various technologies. Believe that this system will be further promoted in the coal mine fields.