Simulation design and verification of CO monitoring based on tunable diode laser absorption spectroscopy

Author

Li, Hong-lian ; Zhu, Yan ; Dong, Fang ; Li, Xiao-ting ; Zhang, Lian-shui

Author_Institution

Coll. of Quality & Supervisor Technol., Hebei Univ., Baoding, China

fYear

2010

fDate

13-18 June 2010

Firstpage

482

Lastpage

483

Abstract

Based on the tunable diode laser absorption spectroscopy (TDLAS) gas detection system, simulation models are built up using the dynamic simulation tool. The second harmonic signals of CO with six different concentrations are obtained depending on the simulation models. Regression coefficient is obtained by overall second harmonic least squares fitting of standard second harmonic spectrum signal of known concentration gas and spectrum signal of gas detected. The order of relative error for 1.97% CO is 10^-5, which shows that the simulation models are reliable and the inversion algorithm is feasible to detect trace gases in theory.

Keywords

gas sensors; least squares approximations; measurement by laser beam; optical harmonic generation; semiconductor lasers; signal processing; spectrochemical analysis; CO; carbon monoxide monitoring; gas detection system; inversion algorithm; second harmonic least square fitting; second harmonic signal; trace gas detection; tunable diode laser absorption spectroscopy; Absorption; Diode lasers; Gas detectors; Least squares methods; Monitoring; Optical design; Reliability theory; Signal detection; Spectroscopy; Tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM), 2010 Conference on

Conference_Location

Daejeon

Print_ISBN

978-1-4244-6795-2

Type

conf

DOI

10.1109/CPEM.2010.5545161

Filename

5545161