A Portable Detector Of Methane Gas

Coal mine methane is the main harmful gases, it is serious threat to underground operations personnel. How to check real-time accurate concentration of methane in the mine is to become the key to avoid such accidents. When the methane concentration reaches a certain limit, can easily cause a major safety incidents, the concentration of methane gas detector used to detect the existence of methane leaks, and thus prevent such accidents from happening.In this paper, coal mine production problems in the design of a portable methane gas concentration detector. The apparatus for the catalytic combustion type sensors for the detection of components, using infrared remote control technology to the instrument calibration and alarm set points can be accurately carried out on-site real-time measurement of methane concentration. When the methane content in the air exceeds a preset alarm value, alarm with the use of sound and light way. The main topics were the following aspects of the study:1. Hardware circuit design of methane gas detector. Dream up the hardware platform with MSP430F437 microcontroller as the core structures of the system's, and main design of the temperature control circuit, zero circuit, infrared remote control circuits, liquid crystal display circuit, the keyboard interface circuit and sound and light alarm circuit circuit.2. Firmware programming of methane gas detector's. Functional requirements according to the design requirements, using C language methane gas detector software design and implementation of the methane concentration data collection, processing, display and zero drift and sensitivity compensation function.3. System debugging. Conducted a methane gas detector machine commissioning, analyzed the experimental data, designed to provide a basis for future improvements.Methane gas detector in real time to accurately check the concentration of methane in the mine to prevent a major incident occurs, the underground operations provide a safe and secure, and with great promotional value.