Wireless powering for electrochemical sensor

Andrzej Pepłowski , Daniel Janczak , Małgorzata Jakubowska

Abstract

System of wireless energy supply for a electrochemical sensor is presented. As a first step, various theoretical models of the sensor were considered and a new model, proper for the application studied, was proposed to enable further design stages. In the experiment conducted, it was verified, that the sensor, working in an amperometric mode and in the presence of constant or quasi-constant voltage supply, could be electrically approximated as element of the constant impedance value. Given this, power-consumption was calculated for the sensor using Ohm’s law and the proof of concept device was fabricated to evaluate performance of the sensor under theoretically calculated conditions. The results obtained were comparable to the data previously recorded using conventional laboratory potentiostat. For verification of the resistive character of the sensor, chronoamperometric method was employed, with sensor’s response complying with the theoretical prediction for quasi-constant powering signal and being influenced only by major voltage changes. Calculated power consumption of the sensor was Pmax. = 18.23μW. Concerning sensor’s requirement for quasiconstant voltage, simple half-wave rectifier was designed that was connected to the antenna used for powering signal reception. In the second experiment, calibration of the sensor was performed, yielding sensitivity s = 2.03 μA/μmol/L and linear correlation coefficient ρ = 0.986 and thus confirming proper operation of the device in the conditions considered.
Author Andrzej Pepłowski IMIB
Andrzej Pepłowski,,
- The Institute of Metrology and Biomedical Engineering
, Daniel Janczak IMIB
Daniel Janczak,,
- The Institute of Metrology and Biomedical Engineering
, Małgorzata Jakubowska IMIB
Małgorzata Jakubowska,,
- The Institute of Metrology and Biomedical Engineering
Pages100311T-1 - 100311T-7
Publication size in sheets5015.55
Book Romaniuk Ryszard (eds.): Proc. SPIE. 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, vol. 10031, 2016, SPIE , ISBN 9781510604858, [781510604865 (electronic) ], 1170 p., DOI:10.1117/12.2257157
Keywords in EnglishSensors
DOIDOI:10.1117/12.2248623
URL https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10031/1/Wireless-powering-for-electrochemical-sensor/10.1117/12.2248623.full?SSO=1
Languageen angielski
Score (nominal)15
ScoreMinisterial score = 15.0, 02-10-2017, BookChapterMatConf
Ministerial score (2013-2016) = 15.0, 02-10-2017, BookChapterMatConf
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