Research And Realization Of The Roof Pressure And Displacement Data Acquisition System For Mine

In recent years, the coal mine accidents happened frequently, the statistics of our country's coal mine accidents indicated that roof accidents has been come to the fore in various types of accidents. At present, the function of mine pressure monitoring systems is to monitor the roof pressure in the mechanization mining face, and lack of hydraulic support phase of constant resistance with the roof top beam can be shrinkage subsidence (displacement) of the real-time online monitoring. However, the displacement of the top beam change, which is caused by the roof subsidence, is an indispensable factor for analysising coming-pressure law of the mechanization mining face. Consequently, it is very necessary to research and design the system which includes pressure monitoring and displacement monitoring.Through the analysis of the function and the performance demand of the system, the mine roof pressure displacement data acquisition system structure and the composition were designed; and the mine roof pressure displacement data acquisition system's structure and the composition were designed, and the overall of design system and the functional module division was separately carried on for the data acquisition instrument and the data processing software; the essential component of the data acquisition instrument was choosed, and then the acquisition instrument hardware circuit with three channels pressure and one channel displacement was designed, which mainly include the sensor signal processing electric circuit, the data storage electric circuit, the supply voltage transfer electric circuit, the data display electric circuit, the communication electric circuit etc.; The design of the the hardware anti- jamming was completed; Based on the IAR Embedded Workbench Development Platform, the data acquisition procedure was designed and developed with C language; The system database was design based on SQL server 2000; By using the object-oriented technology and the C++ language, the data processing software was designed and developed, which communicate with the data acquisition instrument by real-time. The software includes the functions: real-time data display, data reports generating, graphic curves drawing etc, which can administer the whole system.The test indicated that the mine roof pressure and displacement data acquisition system has reached the design requirements. The system made up the insufficiency for monitoring the working surface roof of the coal mine successfully, and improved ability of the real-time online monitor in our country coal mine roof pressure displacement data acquisition, which has an important meaning to the coal mine safety.