Simple measuring system for impedance spectroscopy analysis of fluids

Longo, Jean Paulo Nakatu; Leitzke, Juliana Padilha; Morales, Rigoberto E. M.; Silva, Marco J. da

doi:10.1109/inscit.2016.7598205

Cited by 3 publications

(1 citation statement)

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“…In electrical impedance spectroscopy, the frequency-dependent behavior of materials is analyzed in the frequency domain (Macdonald and Barsoukov, 2005). Some studies compare the electrical characteristics of water and ice, such as in Artemov and Volkov (2014), Longo et al (2016); and Flatscher et al (2017).…”

Section: Electrical Impedance Tomographymentioning

confidence: 99%

Low-power electrical impedance tomography spectroscopy

Leitzke

Zangl

2019

COMPEL

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Purpose This paper aims to present an approach based on electrical impedance tomography spectroscopy (EITS) for the determination of water and ice fraction in low-power applications such as autarkic wireless sensors, which require a low computational complexity reconstruction approach and a low number of electrodes. This paper also investigates how the electrode design can affect the reconstruction results in tomography. Design/methodology/approach EITS is performed by using a non-iterative method called optimal first order approximation. In addition to that, a planar electrode geometry is used instead of the traditional circular electrode geometry. Such a structure allows the system to identify materials placed on the region above the sensor, which do not need to be confined in a pipe. For the optimization, the mean squared error (MSE) between the reference images and the obtained reconstructed images was calculated. Findings The authors demonstrate that even with a low number of four electrodes and a low complexity reconstruction algorithm, a reasonable reconstruction of water and ice fractions is possible. Furthermore, it is shown that an optimal distribution of the sensor electrodes can help to reduce the MSE without any costs in terms of computational complexity or power consumption. Originality/value This paper shows through simulations that the reconstruction of ice and water mixtures is possible and that the electrode design is a topic of great importance, as they can significantly affect the reconstruction results.

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Section: Electrical Impedance Tomographymentioning

confidence: 99%