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Design Considerations of Ultra-Low-Power Polymer Gas Microsensors Based on Noise Analysis

Design Considerations of Ultra-Low-Power Polymer Gas Microsensors Based on Noise Analysis

Authors :
Sylvain Petre
Thomas Walewyns
Yann Danlée
Rafael Puyol
Denis Flandre
Laurent Francis
Source :
Proceedings, Vol 56, Iss 19, p 19 (2020)
Publication Year :
2020
Publisher :
MDPI AG, 2020.

Abstract

Current sensing solutions must combine an ultra-low energy consumption trend with high reliability. The challenge lies on a fine setting of the detection threshold with the assurance of a sufficient sensitivity. In this article, the uncertainty introduced on gas sensing applications by the inherent sensor noise is studied. A 1/f model of the electronic noise in polypyrrole-based ammonia (NH3) sensors is presented and used to estimate the intrinsic signal-to-noise ratio (SNR), giving an effective precision of 10.7 bits, i.e., down to 31.4 ppb in terms of NH3 concentration. No significant improvement in SNR is achieved by increasing the bias voltage and hence the power consumption.

Details

Language :
English
ISSN :
25043900
Volume :
56
Issue :
19
Database :
OpenAIRE
Journal :
Proceedings
Accession number :
edsair.doi.dedup.....f780467fb7998643e57d290620b155d0