An early fire gas sensor based on 2.33 μm DFB laser

Jingmin Dang,Haiye Yu,Fang Song,Yiding Wang,Yujing Sun,Chuantao Zheng

Infrared Physics & Technology（2018）

引用 13|浏览30

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摘要

•A fire detection sensor was realized based on 2.33 μm DFB laser and WMS technique.•A digital orthogonal lock-in amplifier was developed based on DAQ and LabVIEW program.•A first-harmonic-normalized wavelength modulation spectroscopy with second-harmonic detection strategy was employed for data processing.

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关键词

Fire detection,Near-infrared,Carbon monoxide,Distribution feedback (DFB) laser,Wavelength modulation spectroscopy (WMS)

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An early fire gas sensor based on 2.33 μm DFB laser

An early fire gas sensor based on 2.33 μm DFB laser