The Theory and the Improvement Design of CH_4 Detection Instrument Based on Light Interference Technique

In this paper,the methane detection technique based on laser light interference is discussed.At the same time,the improvement design in signal capturing is also focused on.The improvement design is that using CCD,CMOS photoelectricity sensor to get video signal,then the signal is send into embedded system.Digital image processing can give the concentration of methane,and an excellent program can improve the speed and precision of detection.