Based On The Wireless Network Parameter Mine Ventilation Shaft Safety Monitoring System Research

This subject comes from the Natural Science Fund project of Education Department of Anhui Province (Fund number: 2006KJ0388), Aiming at the current state of the coal mine production safety requirements of the enterprise constantly improve their own development and the practical problems encountered, We developing based on the wireless network mine ventilation shaft of comprehensive safety monitoring system.Paper introduces the Monitoring System Monitor Terminal (RTU) hardware, software algorithm design, communications technology and system monitoring software design.Monitor Terminal (RTU) hardware design of DSP chips used mainly as a monitoring station at the terminal processing core, in accordance with the monitoring of the main parameters such as fan the current, voltage, a state of suspension, the wind tunnel vacuum, the wind Well export a low concentration of the actual characteristics, using DSP for high-speed data acquisition and processing, according to monitoring center ordered the corresponding data processing and data transmission.Monitor Terminal (RTU) algorithm design, the characteristics of data acquisition system for the current phase, a phase voltage as signal sampling. Sampling data using fast Fourier transform (FFT) to numerical algorithm has obtained the high accuracy air shaft synthesis parameter survey.Communication is a part of the receiver using high sensitivity, frequency stability, and higher transmission efficiency advantages of the wireless digital radio and RS-232 wireless network components, to achieve a data transmission from top to bottom.The system monitoring's software uses in VB6.0 the programming to carry on the real-time data gathering to process and to control, data real time display, report form printing and warning. and so on functions . Through the ADO object model and the ODBC connection, carry on the real-time data with operating system's on database server the interaction. The client side using the computer network technology, uses the B/S pattern long-distance to realize for the systems operation data transmission, in order to inquire the real-time data and the historical data, realizes the resource sharing.