Exploring Temperature-Modulated Operation Mode of Metal Oxide Gas Sensors for Robust Signal Processing
| Autor: | Mirza Grbic, Bernat Zaragoza Travieso, Stefan Defregger, Anton Köck, Romana Boiger, Manfred Mucke, Robert Wimmer-Teubenbacher |
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| Rok vydání: | 2018 |
| Předmět: |
Work (thermodynamics)
Signal processing Materials science 05 social sciences Oxide metal oxide gas sensors Wavelet transform lcsh:A Reaction rate chemistry.chemical_compound Wavelet Adsorption chemistry gas concentration quantification 0502 economics and business temperature-modulated operation lcsh:General Works Biological system wavelet transform MOX fuel 050212 sport leisure & tourism 050205 econometrics |
| Zdroj: | Proceedings Proceedings, Vol 2, Iss 13, p 1058 (2019) |
| ISSN: | 2504-3900 |
| DOI: | 10.3390/proceedings2131058 |
| Popis: | Metal oxide (MOx) gas sensor signals are mainly governed by adsorption and desorption processes of oxygen and its reaction with surrounding gas molecules. Different target gases exhibit different reaction rates leading to characteristic sensor responses for specific gas species and their concentrations. In this work, we compare temperature-modulated sensor operation (TMO) with sensor operation at a single temperature. Further, we explore if under specific TMO regimes, a simple signal processing allows for quantification of gas concentrations. We specifically investigate, if the relevant information can be captured in selected discrete wavelet coefficients. In addition, we compare the results received from this wavelet features to reaction rate evaluation features. |
| Databáze: | OpenAIRE |
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