Research on coal mine gas sensor systems based on two-wavelength

摘要

Gas explosion coal mine is the major security accident, for the past shortcomings of gas detection and the detection of gas concentration measurements, which cause wrong measurement data, so two-wavelength gas sensing system is designed to reduce the error greatly. Selecting the right wavelength, the system uses the same light source and the same absorption pool to eliminate the impact of the light source changing, the errors caused by different absorption parameters and interference absorption caused by background. The result shows that this method effectively improves the detection sensitivity, precision and stability.