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Using a second order sigma-delta control to improve the performance of metal-oxide gas sensors

Author
Kowalski, L.; Pons, J.; Navarrete, E.; Llobet, E.; Dominguez, M.
Type of activity
Journal article
Journal
Sensors
Date of publication
2018-02-23
Volume
18
Number
2
First page
654-1
Last page
654-13
DOI
https://doi.org/10.3390/s18020654 Open in new window
Repository
http://hdl.handle.net/2117/115417 Open in new window
URL
http://www.mdpi.com/1424-8220/18/2/654 Open in new window
Abstract
Controls of surface potential have been proposed to accelerate the time response of MOX gas sensors. These controls use temperature modulations and a feedback loop based on first-order sigma-delta modulators to keep constant the surface potential. Changes in the surrounding gases, therefore, must be compensated by average temperature produced by the control loop, which is the new output signal. The purpose of this paper is to present a second order sigma-delta control of the surface potential fo...
Citation
Kowalski, L., Pons, J., Navarrete, E., Llobet, E., Dominguez, M. Using a Second Order Sigma-Delta Control to Improve the Performance of Metal-Oxide Gas Sensors. "Sensors", 23 Febrer 2018, vol. 18, núm. 2, p. 654-1-654-13.
Keywords
electrochemical impedance, gas sensors, metal-oxide sensors, sigma-delta modulation
Group of research
MNT - Micro and Nanotechnologies Research Group

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