Title :
Tunable Diode Laser Absorption Spectroscopy based Oxygen Sensor
Author :
Verma, Rajesh ; Neethu, S. ; Kamble, S.S. ; Radhakrishnan, J.K. ; Krishnapur, P.P. ; Padki, V.C.
Author_Institution :
Dept. of Life Support Syst., Defence R&D Organ. (DRDO), Bangalore, India
Abstract :
Tunable Diode Laser Absorption Spectroscopy (TDLAS) based gas sensing technology is a futuristic technology that has wide application in aerospace industry. In this paper we present the preliminary measurements on a TDLAS based Oxygen Sensor. TDLAS bench model setup has been established to measure the 1st and 2nd harmonics of the absorption signal. If-normalized WMS-2 technique is used for calculation of percentage oxygen concentration. The result has been compared with the 2nd harmonic detection technique and observed that the measured oxygen concentration coincides with the actual oxygen concentration using If-normalized WMS-2 technique.
Keywords :
chemical variables measurement; gas sensors; oxygen; semiconductor lasers; 1st harmonic detection technique; 1f-normalized WMS-2 technique; 2nd harmonic detection technique; O; TDLAS bench model setup; absorption signal harmonics measurement; aerospace industry; gas sensing technology; oxygen sensor; percentage oxygen concentration measurement; tunable diode laser absorption spectroscopy; wavelength modulation spectroscopy; Absorption; Diode lasers; Gas lasers; Harmonic analysis; Laser modes; Modulation; Oxygen; If-normalized WMS-2 technique; TDLAS-Tunable diode laser absorption spectroscopy; WMS-wavelength modulation spectroscopy;
Conference_Titel :
Sensing Technology (ICST), 2012 Sixth International Conference on
Conference_Location :
Kolkata
Print_ISBN :
978-1-4673-2246-1
DOI :
10.1109/ICSensT.2012.6461655
