APPLICATION OF POLY-HARMONIC SIGNALS TO EDDY-CURRENT METAL DETECTORS AND TO ADVANCED CLASSIFICATION OF METALS
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F18%3A00319582" target="_blank" >RIV/68407700:21230/18:00319582 - isvavai.cz</a>
Result on the web
<a href="http://www.metrology.pg.gda.pl/archives.html" target="_blank" >http://www.metrology.pg.gda.pl/archives.html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.24425/119564" target="_blank" >10.24425/119564</a>
Alternative languages
Result language
angličtina
Original language name
APPLICATION OF POLY-HARMONIC SIGNALS TO EDDY-CURRENT METAL DETECTORS AND TO ADVANCED CLASSIFICATION OF METALS
Original language description
A limited ability to discriminate between different materials is a fundamental problem with all conventional eddy current based metal detectors. This article presents the use, evaluation and classification of non-traditional excitation signals for eddy current metal detectors to improve its detection and discrimination ability. The presented multi-frequency excitation signals are the following: a step sweep sine wave, a linear frequency sweep and sin(x)/x signals. All signals are evaluated in a frequency domain. An amplitude and a phase spectra and polar graphs of a detector output signal are used for a classification and discrimination of the tested objects. Four different classifiers are presented. The comparison of classification results of polyharmonic signals with the classical single tone method is also shown. Multi-frequency signals offer more detailed information, due to response function – the frequency characteristic of a detected object, than the application of standard single tone methods. Based on the measurements and analysis, a metal object can be better distinguished than when using the single tone method.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Metrology and Measurement Systems
ISSN
0860-8229
e-ISSN
2300-1941
Volume of the periodical
25
Issue of the periodical within the volume
2
Country of publishing house
PL - POLAND
Number of pages
16
Pages from-to
387-402
UT code for WoS article
000439051900010
EID of the result in the Scopus database
2-s2.0-85052202354