New signal processing for fast and precise QEPAS measurements.

Clicks: 379
ID: 55964
2019
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Ranked #2 of 12 articles by views in IEEE transactions on ultrasonics, ferroelectrics, and frequency control

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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 tuning fork to enable high sensitivity and high selectivity miniature gas sensors. Lock-in detection is classically used to measure the resonator amplitude which is proportional to the gas concentration, but this technique is slow and leads to measurement drifts as it does not follow the resonator frequency drifts over temperature and pressure. This paper presents a new QEPAS signal processing technique that allows faster and more stable measurements that will enable accurate and fast multi gas sensors.
Reference Key
levy2019newieee Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Levy, Raphael;Duquesnoy, Maxime;Aoust, Guillaume;Melkonian, Jean Michel;Raybaut, Myriam;
Journal IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Year 2019
DOI
10.1109/TUFFC.2019.2943388
URL
Keywords
Functional connectivity auditory search asymmetry dorsal attention network p3a p3b ventral attention network

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