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Mobile Sensor System AGaMon for Breath Control: Numerical Signal Analysis of Ternary Gas Mixtures and First Field Tests

Seifert, Rolf; Conrad, Thorsten; Peter, Jens; Keller, Hubert B.

An innovative mobile sensor system for breath control in the exhaled air is introduced. In this paper, the application of alcohol control in the exhaled air is considered. This sensor system operates semiconducting gas sensor elements with respect to the application in a thermo-cyclic operation mode. This operation mode leads to so-called conductance-over-time-profiles (CTPs), which are fingerprints of the gas mixture under consideration and can be used for substance identification and concentration determination. Especially for the alcohol control in the exhaled air, ethanol is the leading gas component to be investigated. But, there are also other interfering gas components in the exhaled air, like H2 and acetone, which may influence the measurement results. Therefore, a ternary ethanol-H2-acetone gas mixture was investigated. The establishing of the mathematical calibration model and the data analysis was performed with a newly developed innovative calibration and evaluation procedure called ProSens 3.0. The analysis of ternary ethanol-H2-acetone gas samples with ProSens 3.0 shows a very good substance identification performance and a very good concentration determination of the leading ethanol component. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000080132
Veröffentlicht am 12.02.2018
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Automation und angewandte Informatik (IAI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2018
Sprache Englisch
Identifikator ISSN: 1726-5479, 2306-8515
KITopen-ID: 1000080132
HGF-Programm 34.15.01 (POF III, LK 01) Mineralische Konstruktionsmaterialien
Erschienen in Sensors & transducers
Verlag IFSA Publ.
Band 219
Heft 1
Seiten 9-16
Schlagwörter Alcohol control, Mobile sensor system, Thermo-cyclic operation, Data analysis, Substance identification, Concentration determination, Field test.
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