Optical-microwave sensor for real-time measurement of water contamination in oil derivatives
Fecha
2023Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Identificador del proyecto
Impacto
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10.1016/j.aeue.2023.154798
Resumen
This paper presents a novel microwave sensor using optical activation for measuring in real-time the water
contamination in crude oil or its derivatives. The sensor is constructed from an end-coupled microstrip resonator
that is interconnected to two pairs of identical fractal structures based on Moore curves. Electromagnetic (EM)
interaction between the fractal curves is mitigated using a T-s ...
[++]
This paper presents a novel microwave sensor using optical activation for measuring in real-time the water
contamination in crude oil or its derivatives. The sensor is constructed from an end-coupled microstrip resonator
that is interconnected to two pairs of identical fractal structures based on Moore curves. Electromagnetic (EM)
interaction between the fractal curves is mitigated using a T-shaped microstrip-stub to enhance the performance
of the sensor. The gap in one pair of fractal curves is loaded with light dependent resistors (LDR) and the other
pair with microwave chip capacitors. The chip capacitors were used to increase the EM coupling between the
fractal gaps to realize a high Q-factor resonator that determines the sensitivity of the sensor. Empirical results
presented here show that the insertion-loss of the sensor is affected by the change in LDR impedance when
illuminated by light. This property is used to determine the amount of water contaminated oil. The sensitivity of
the sensor was optimized using commercial 3D EM solver. The measurements were made by placing a 30 mm
diameter petri dish holding the sample on top of the sensor. The petri dish was filled up to a height of 10 mm
with the sample of water contaminated crude oil, and the measurements were done in the range between 0.76
GHz and 1.2 GHz. The Q-factor of the oil sample with no water contamination was 70 and the Q-factor declined
to 20 for 100% contamination. The error in the measurements was less than 0.024%. The sensor has dimensions
of 0.127λo × 0.127λo × 0.004 λo and represents a new modality. Compared to existing techniques, the proposed
sensor is simple to use, readily portable and is more sensitive. [--]
Materias
Electromagnetic (EM) spectrum,
Fractal curves,
Light dependent resistors (LDR),
Microstrip sensor
Editor
Elsevier
Publicado en
International Journal of Electronics and Communications (AEU) 170 (2023) 154798
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC
Versión del editor
Entidades Financiadoras
Dr. M. Alibakhshikenari acknowledges support from the CONEX-Plus programme funded by Universidad Carlos III de Madrid and the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 801538. The authors also sincerely appreciate funding from Researchers Supporting Project number (RSPD2023R699), King Saud University, Riyadh, Saudi Arabia. Also, this work was supported by Ministerio de Ciencia, Innovación y Universidades, Gobierno de España (Agencia Estatal de Investigación, Fondo Europeo de Desarrollo Regional -FEDER-, Eu-ropean Union) under the research grant PID2021-127409OB-C31 CONDOR. Besides above, the Article Processing Charge (APC) was afforded by Universidad Carlos III de Madrid (Read & Publish Agreement CRUE-CSIC 2023).