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-  2018 

Laser Methane Sensor and the Study of Cross Interference
Laser Methane Sensor and the Study of Cross Interference

DOI: 10.15918/j.jbit1004-0579.17086

Keywords: tunable diode laser absorption spectroscopy (TDLAS) vertical cavity surface emitting laser (VCSEL) methane sensor cross interference
tunable diode laser absorption spectroscopy (TDLAS) vertical cavity surface emitting laser (VCSEL) methane sensor cross interference

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Abstract:

A methane sensor system was designed based on tunable diode laser absorption spectroscopy (TDLAS) technology and the feature of vertical cavity surface emitting laser (VCSEL) with wavelengths up to several nanometers. We studied the gas present in the methane sensor's common operation environment. Through absorption spectrum stimulation and experiments,we analyzed the cross interference of the gas of H2O, CO and CO2 to methane detection. The results prove that this laser methane sensor has the characteristics of high stability and anti-cross interference.
A methane sensor system was designed based on tunable diode laser absorption spectroscopy (TDLAS) technology and the feature of vertical cavity surface emitting laser (VCSEL) with wavelengths up to several nanometers. We studied the gas present in the methane sensor's common operation environment. Through absorption spectrum stimulation and experiments,we analyzed the cross interference of the gas of H2O, CO and CO2 to methane detection. The results prove that this laser methane sensor has the characteristics of high stability and anti-cross interference.

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