Research And Development Of The Coal Mine Integrative Monitoring System Based On CAN Bus

The coal mine integrative monitoring system based on CAN bus is a new kind of safety monitoring system which can be used in the coal mine. For the advantage of the steady and dependable communication, high integration degree, low cost, it will be applied increasingly and be promising in the information-based management field of coal mine enterprise.This paper analysis and discusses the main limitation and development direction of the existing coal mine monitoring system, uses CAN bus instead of tradition RS485 bus in the data communication, it integrates the personnel orientation system that is still in the foreland of research into the common safety monitoring system, raises the information-based degree of the coal mine safe production further. It develops a new CAN bus bridge product at the same time, so it has large advancement in enlarging communication distance and lowering communication load of the CAN bus, and the tree topology structure comes true in the net under the coal mine .It overcomes the weakness of traditional RS485 bus in the speed, distance and stability by using the CAN bus; The function of intelligent managing and urgent succor for people who are under the coal mine comes true due to the function of personnel orientation used wireless communication; It integrates the personnel orientation system into the common monitoring system because it accords with the actual need of the safety monitoring and cost control of the enterprise; It uses the tree topology structure after analyzing the geography environment of coal mine, and carries out the function of relaying and filtering data through the developing of a new CAN bridge; The monitoring software is developed by using Delphi and SQL Serve based on the Windows XP operation system, it can display the information of people under the mine and the sensitive data by form and figure, and it has a strong function of processing data followed, conveniences the information-based management of coal mine enterprise; It provides practical valid measure to the credibility and flameproof function of product according to the special request of product that used in coal mine. The whole system has been tested for a long time in the coal mine locale, and the result argued that the function and performance of the system accorded with the anticipant purpose and request, and this test was also provided much important data for improving and perfecting the product in the future.