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        Resolving Fast Gas Transients with Metal Oxide Sensors

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        manuscript.pdf (PDF, 305Kb)(embargoed until 01/02/2022)
        Author
        Drix, Damien
        Schmuker, Michael
        Attention
        2299/23850
        Abstract
        Electronic olfaction can help detect and localise harmful gases and pollutants, but the turbulence of natural environment presents a particular challenge: odor encounters are intermittent, and an effective electronic nose must therefore be able to resolve short odor pulses. The slow responses of the widely-used Metal-Oxide (MOX) gas sensors complicate the task. Here we combine high-resolution data acquisition with a processing method based on Kalman filtering and absolute-deadband sampling to extract fast onset events. We find that our system can resolve the onset time of odour encounters with enough precision for source direction estimation with a pair of MOX sensors in a stereo-osmic configuration.
        Publication date
        2021-02-01
        Published in
        ACS Sensors
        Published version
        https://doi.org/10.1021/acssensors.0c02006
        Other links
        http://hdl.handle.net/2299/23850
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