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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
- 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.
- Subjects :
- chemistry.chemical_classification
gas sensing
Ultra low power
ultra-low-power
Materials science
polypyrrole sensor
Biasing
lcsh:A
Energy consumption
Polymer
Noise (electronics)
sensor noise
Reliability (semiconductor)
chemistry
Power consumption
Electronic engineering
lcsh:General Works
Sensitivity (electronics)
Subjects
Details
- Language :
- English
- ISSN :
- 25043900
- Volume :
- 56
- Issue :
- 19
- Database :
- OpenAIRE
- Journal :
- Proceedings
- Accession number :
- edsair.doi.dedup.....f780467fb7998643e57d290620b155d0