Eddy-Current Amplitude-Phase Based Method for Identifying Conductive (Metal) Objects

A. O. Abramovych, V. O. Piddubnyi

National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine

Received: 18.01.2019; final version - 29.07.2020. Download: PDF

The paper deals with the results of identification of conductor (metal) objects by means of an eddy-current radio engineering system, which works on the basis of the amplitude-phase method of recording the response received from the object being investigated. Existing mathematical models that describe changes in feedback are considered. It is shown that measuring only the phase shift of the signal given in the receiving antenna of the system relative to the probe, which is considered in the known models, allows distributing metals only on the basis of magnetic/non-magnetic. In order to identify metals within subgroups, it is proposed to analyze the signal shape and evaluate the amplitude-phase response characteristics. The simulation of the signal for several metals is carried out. Information about them is stored on a storage device and is used to further identify metals, which is a percentage comparison of response parameters from an unknown object with a response recorded in the image database.

Key words: electromagnetic properties of metals, eddy-current converter, location devices, remote identification of metals, mathematical modeling.

URL: http://mfint.imp.kiev.ua/en/abstract/v42/i08/1169.html

DOI: https://doi.org/10.15407/mfint.42.08.1169

PACS: 07.05.Kf, 42.25.Gy, 75.20.En, 75.50.Bb, 81.70.Ex, 81.70.Jb, 84.40.Xb

Citation: A. O. Abramovych and V. O. Piddubnyi, Eddy-Current Amplitude-Phase Based Method for Identifying Conductive (Metal) Objects, Metallofiz. Noveishie Tekhnol., 42, No. 8: 1169—1185 (2020) (in Ukrainian)

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