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Detecting changes of a distant gas source with an array of MOX gas sensors
Örebro University, School of Science and Technology. (Centre of Applied Autonomous Sensor Systems ( AASS ))
Örebro University, School of Science and Technology. (Centre of Applied Autonomous Sensor Systems ( AASS ))ORCID iD: 0000-0003-0217-9326
Örebro University, School of Science and Technology. (Centre of Applied Autonomous Sensor Systems ( AASS ))ORCID iD: 0000-0003-0195-2102
2012 (English)In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 12, no 12, 16404-16419 p.Article in journal (Refereed) Published
Abstract [en]

We address the problem of detecting changes in the activity of a distant gas source from the response of an array of metal oxide (MOX) gas sensors deployed in an open sampling system. The main challenge is the turbulent nature of gas dispersion and the response dynamics of the sensors. We propose a change point detection approach and evaluate it on individual gas sensors in an experimental setup where a gas source changes in intensity, compound, or mixture ratio. We also introduce an efficient sensor selection algorithm and evaluate the change point detection approach with the selected sensor array subsets.

Place, publisher, year, edition, pages
Basel: MDPI AG , 2012. Vol. 12, no 12, 16404-16419 p.
Keyword [en]
MOX sensor; open sampling system; sensor selection; change point detection
National Category
Chemical Sciences
Research subject
Chemistry
Identifiers
URN: urn:nbn:se:oru:diva-26531DOI: 10.3390/s121216404ISI: 000312607500023PubMedID: 23443385Scopus ID: 2-s2.0-84871673358OAI: oai:DiVA.org:oru-26531DiVA: diva2:572461
Available from: 2012-11-29 Created: 2012-11-27 Last updated: 2017-10-18Bibliographically approved

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