Design And Realization Of Mine Infrared Methane Detection Device Based On MiniGUI

In the coal industry, a main factor has been risking and restricting the coal mineproduction safety, which is the gas calamity. Therefore, the real-time detection of the cause,leakage and concentration of gas can protect the environment and ensure the safe operation ofmining and personal safety.In this paper, the target gas is the main component of gas. In view of the gasconcentration measurements inaccurately and non-friendly visual display interface of theexisting coal mine methane detection device, based on the principle of gas selectiveabsorption in the infrared wave band and the analysis of the infrared absorption spectrum ofmethane, the paper presents a new infrared methane detector for mine to connect embeddeddatabase SQLite in MiniGUI.The detection device system uses a gas sensor structure with dual-wavelength and singleoptical path, selects the strong absorption spectral line of methane in 3.31 ?m wave length,uses a infrared LED as light source, realizes the gas concentration detection. According to thecharacteristic in the gas detection system, design program has been brought forward. ARM9S3C2440, which is a microcomputer, is taken as the core of the instrument. The functions arerealized through programming with ARM9 S3C2440, which includes the collection ofmethane concentration information, data processing, display and transmission. Based on theembedded linux software platform, use a programmed realization to connect embeddeddatabase SQLite in MiniGUI, which is total different from its peers. By analysis andcomparison, the Linux operating system, embedded GUI and embedded database SQLite havebeen selected. More emphases of this paper are laid on the porting and customization of Linuxkernel, MiniGUI & SQLite environment as well as the upper application design andrealization. Also, the methane concentration data management program interface has been given. Finally, the detection system is studied to verify the feasibility of the detection program.This detection device plays a very important role on the safe operation of mining,reducing accidents and loss of life and property, which is perfectly functional, simple andflexible. It should be applied broadly.