Evaluation of the Properties of Eddy Current Sensors Based on Their Equivalent Parameters

This paper presents a practical way of using the method of evaluating the metrological properties of eddy current sensors. The idea of the proposed approach consists of employing a mathematical model of an ideal filamentary coil to determine equivalent parameters of the sensor and sensitivity coeffi...

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Main Authors: Leszek Dziczkowski, Grzegorz Tytko
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/23/6/3267
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author Leszek Dziczkowski
Grzegorz Tytko
author_facet Leszek Dziczkowski
Grzegorz Tytko
author_sort Leszek Dziczkowski
collection DOAJ
description This paper presents a practical way of using the method of evaluating the metrological properties of eddy current sensors. The idea of the proposed approach consists of employing a mathematical model of an ideal filamentary coil to determine equivalent parameters of the sensor and sensitivity coefficients of tested physical quantities. These parameters were determined on the basis of the measured value of the real sensor’s impedance. The measurements were carried out with an air-core sensor and an I-core sensor while they were positioned at different distances from the surface of tested copper and bronze plates. An analysis of the influence of the coil’s position in relation to the I core on the equivalent parameters was also carried out, and the interpretation of the results obtained for various sensor configurations was presented in a graphical form. When equivalent parameters and sensitivity coefficients of examined physical quantities are known, it is possible to compare even very different sensors with the employment of one measure. The proposed approach makes it possible to make a significant simplification of the mechanisms of calibration of conductometers and defectoscopes, computer simulation of eddy current tests, creating the scale of a measuring device, and designing sensors.
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spelling doaj.art-b10babbfcd5c402d94230131c5c3d9582023-11-17T13:48:18ZengMDPI AGSensors1424-82202023-03-01236326710.3390/s23063267Evaluation of the Properties of Eddy Current Sensors Based on Their Equivalent ParametersLeszek Dziczkowski0Grzegorz Tytko1Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, PolandFaculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, PolandThis paper presents a practical way of using the method of evaluating the metrological properties of eddy current sensors. The idea of the proposed approach consists of employing a mathematical model of an ideal filamentary coil to determine equivalent parameters of the sensor and sensitivity coefficients of tested physical quantities. These parameters were determined on the basis of the measured value of the real sensor’s impedance. The measurements were carried out with an air-core sensor and an I-core sensor while they were positioned at different distances from the surface of tested copper and bronze plates. An analysis of the influence of the coil’s position in relation to the I core on the equivalent parameters was also carried out, and the interpretation of the results obtained for various sensor configurations was presented in a graphical form. When equivalent parameters and sensitivity coefficients of examined physical quantities are known, it is possible to compare even very different sensors with the employment of one measure. The proposed approach makes it possible to make a significant simplification of the mechanisms of calibration of conductometers and defectoscopes, computer simulation of eddy current tests, creating the scale of a measuring device, and designing sensors.https://www.mdpi.com/1424-8220/23/6/3267eddy current testingfilamentary coilI-core sensoranalytical modellingsensor impedance
spellingShingle Leszek Dziczkowski
Grzegorz Tytko
Evaluation of the Properties of Eddy Current Sensors Based on Their Equivalent Parameters
Sensors
eddy current testing
filamentary coil
I-core sensor
analytical modelling
sensor impedance
title Evaluation of the Properties of Eddy Current Sensors Based on Their Equivalent Parameters
title_full Evaluation of the Properties of Eddy Current Sensors Based on Their Equivalent Parameters
title_fullStr Evaluation of the Properties of Eddy Current Sensors Based on Their Equivalent Parameters
title_full_unstemmed Evaluation of the Properties of Eddy Current Sensors Based on Their Equivalent Parameters
title_short Evaluation of the Properties of Eddy Current Sensors Based on Their Equivalent Parameters
title_sort evaluation of the properties of eddy current sensors based on their equivalent parameters
topic eddy current testing
filamentary coil
I-core sensor
analytical modelling
sensor impedance
url https://www.mdpi.com/1424-8220/23/6/3267
work_keys_str_mv AT leszekdziczkowski evaluationofthepropertiesofeddycurrentsensorsbasedontheirequivalentparameters
AT grzegorztytko evaluationofthepropertiesofeddycurrentsensorsbasedontheirequivalentparameters