Metal detector excited by frequency-swept signal

• Autorzy: Svatoš J. , Vedral J. , Fexa P.
• Języki publikacji: EN

Abstrakty

EN

This paper describes the theoretical background of electromagnetic induction from metal objects modelling. The response function of a specific case of object shape - a homogenous sphere from ferromagnetic and nonferromagnetic material is introduced. Experimental data measured by a metal detector excited with a linearly frequency-swept signal are presented. As a testing target various spheres from different materials and sizes were used. These results should lead to better identification of the buried object.

Słowa kluczowe

EN

metal detection; polyharmonic signals; Frequency Sweep; modelling of electromagnetic induction; analog signal processing

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2011
• Tom: Vol. 18, nr 1
• Strony: 57--67
• Opis fizyczny: Bibliogr. 9 poz., rys., wykr.

Twórcy

autor

Svatoš J.

autor

Vedral J.

autor

Fexa P.

• CTU in Prague, Faculty of Electrical Engineering, Department of Measurement, Technicka 2,166 27, Prague 6,Czech Republic,

Bibliografia

• [1] Brooks, J.W. (2000). The Detection of Buried Non-Metallic Anti-Personnel Land Mines. The University of Alabama in Huntsville. Huntsville. Alabama.
• [2] Azevedo, S.G., Stull S. (1997). Making Land-Mine Detection and Removal Practical. https://www.llnl.gov/str/Azevedo.html.
• [3] Riggs, L.S., Mooney, J.E., et al. (1998). Identification of Metallic Mines using Low Frequency Magnetic Fields, in Proc. SPIE Int. Detection and Remediation Technologies for Mines and Minelike Targets III. Orlando. FL, 146-157.
• [4] Composite Autors (2002). Project Mimeva, Study of Generic Mine-Like Objects for R&D in Systems for Humanitarian Demining - Final Report. Ispra.
• [5] Bruschini, C. (August 2004). On the Low Frequency EMI Response of Coincident Loops Over a Conductive and Permeable Soil and Corresponding Background Reduction Schemes. IEEE Trans. Geosci. Remote Sens., 42(8), 1706-1719.
• [6] Bruschini, C. (2002). A Multidisciplinary Analysis of Frequency Domain Metal Detectors for Humanitarian Demining. Vrije Universiteit Brussel. Brussel.
• [7] Vedral, J., Svatos, J., Fexa, P. (2009). Methods for Economical Test of Dynamic Parameters ADCs. Metrology and Measurement Systems, 16(1), 161-170.
• [8] Adamczak, S., Makiela, W., Stepien, K. (2010). Investigating Advantages and Disadvantages of the Analysis of a Geometrical Surface Structure with the Use of Fourier and Wavelet Transform. Metrology and Measurement Systems, 17(2), 233-244.
• [9] (2002). International Test and Evaluation Program for Humanitarian Demining, Soil Electromagnetic Characteristics and Metal Detector Performance, European Commission Joint Research Centre Via E. Fermi. Ispra.