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Tailored Algorithm for Sensitivity Enhancement of Gas Concentration Sensors Based on Tunable Laser Absorption Spectroscopy

Authors :
Everardo Vargas-Rodriguez
Ana Dinora Guzman-Chavez
Roberto Baeza-Serrato
Source :
Sensors, Vol 18, Iss 6, p 1808 (2018)
Publication Year :
2018
Publisher :
MDPI AG, 2018.

Abstract

In this work, a novel tailored algorithm to enhance the overall sensitivity of gas concentration sensors based on the Direct Absorption Tunable Laser Absorption Spectroscopy (DA-ATLAS) method is presented. By using this algorithm, the sensor sensitivity can be custom-designed to be quasi constant over a much larger dynamic range compared with that obtained by typical methods based on a single statistics feature of the sensor signal output (peak amplitude, area under the curve, mean or RMS). Additionally, it is shown that with our algorithm, an optimal function can be tailored to get a quasi linear relationship between the concentration and some specific statistics features over a wider dynamic range. In order to test the viability of our algorithm, a basic C 2 H 2 sensor based on DA-ATLAS was implemented, and its experimental measurements support the simulated results provided by our algorithm.

Details

Language :
English
ISSN :
14248220
Volume :
18
Issue :
6
Database :
Directory of Open Access Journals
Journal :
Sensors
Publication Type :
Academic Journal
Accession number :
edsdoj.90bc6172032246d0907907eecd0083b8
Document Type :
article
Full Text :
https://doi.org/10.3390/s18061808