New Signal Processing for Fast and Accurate QEPAS Measurements

Levy, Ranhael ORCID: 0000-0001-5728-0531, Duquesnoy, Maxime, Aoust, Guillaume and Melkonian, Jean Michel (2018) New Signal Processing for Fast and Accurate QEPAS Measurements. In: 2018 IEEE International Ultrasonics Symposium (IUS), 2018-10-22 - 2018-10-25.

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Official URL: http://dx.doi.org/10.1109/ultsym.2018.8580223

Abstract

Quartz Enhanced Photoacoustic Spectroscopy (QEPAS) gas sensors have been widely developed over the last decade. This technique takes advantage of a high quality factor micro tuning fork to enable high detectivity high selectivity miniature gas sensors. Lock-in detection technique is classically used to measure the resonator amplitude proportional to gas concentration, but this technique is slow and does not follow the resonator frequency shift over temperature. This paper presents a new QEPAS signal processing technique that allows faster and more accurate measurements, that will enable accurate and fast multi gas sensors.

Item Type:	Conference or Workshop Item (Unspecified)
Depositing User:	Symplectic Admin
Date Deposited:	28 Nov 2019 15:05
Last Modified:	17 Mar 2024 05:17
DOI:	10.1109/ultsym.2018.8580223
Open Access URL:	https://hal.archives-ouvertes.fr/hal-02176632/file...
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3063863