Spike latency coding in a biologically inspired micro-electronic nose

Hung Tat Chen 1 Kwan Ting Ng 1 Amine Bermak 1 Man Kay Law 1 Dominique Martinez 2
2 CORTEX - Neuromimetic intelligence
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
Abstract : Recent theoretical and experimental findings suggest that biological olfactory systems utilize relative latencies or time-to-first spikes for fast odor recognition. These time domain encoding methods have been demonstrated to exhibit reduced computational requirements and improved classification robustness [9], [12]. In this paper, we introduce a microcontroller (MCU) based electronic nose system using time domain encoding schemes to achieve a power efficient, compact and robust gas identification system. A compact (4.5cm×5cm×2.2cm) electronic nose, which is integrated with a tin oxide gas sensor array and capable of wireless communication with computers or mobile phones through Bluetooth, was implemented and characterized using three different gases (ethanol, carbon monoxide and hydrogen). During operation, the readout circuit digitizes the gas sensor resistances into a concentration independent spike timing pattern, which is unique for each individual gas. Both sensing and recognition operations have been successfully demonstrated in hardware. Two classification algorithms (rank-order and spikedistance) have been implemented. Both algorithms require no explicit knowledge of the gas concentration to achieve simplified training procedures, and exhibit comparable performances with conventional pattern recognition algorithms while enabling hardware friendly implementation.
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Article dans une revue
IEEE Transactions on Biomedical Circuits and Systems, IEEE, 2011, 5, 2, pp.160-168
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https://hal.inria.fr/inria-00543031
Contributeur : Dominique Martinez <>
Soumis le : dimanche 5 décembre 2010 - 14:25:44
Dernière modification le : jeudi 11 janvier 2018 - 06:19:48

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  • HAL Id : inria-00543031, version 1

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Hung Tat Chen, Kwan Ting Ng, Amine Bermak, Man Kay Law, Dominique Martinez. Spike latency coding in a biologically inspired micro-electronic nose. IEEE Transactions on Biomedical Circuits and Systems, IEEE, 2011, 5, 2, pp.160-168. 〈inria-00543031〉

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