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arXiv · 2010.01903

Resolving fast gas transients with Metal-Oxide sensors

Damien Drix·Michael Schmuker
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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 transients. We find that our system can resolve the precise time of odor onset events, allowing direction estimation with a pair of MOX sensors in stereo-osmic configuration.

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Damien Drix, Michael Schmuker. 2020-10-05. Resolving fast gas transients with Metal-Oxide sensors. https://arxiv.org/abs/2010.01903

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