Active induction balance method for metal detector sensing head utilizing transmitter-bucking and dual current source (CROSBI ID 598492)
Prilog sa skupa u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Ambruš, Davorin ; Vasić, Darko ; Bilas, Vedran
engleski
Active induction balance method for metal detector sensing head utilizing transmitter-bucking and dual current source
A central problem in a design of frequency domain electromagnetic induction sensors used in landmine detection is an effective suppression of a direct inductive coupling between the transmitter and the receiver coil (induction balance, IB). In sensing heads based on the transmitter-bucking configuration, IB is achieved by using two concentric transmitter coils with opposing exciter fields in order to create a central magnetic cavity for the receiver coil. This design has numerous advantages over other IB methods in terms of detection sensitivity, spatial resolution, sensor dimensions and suitability for model-based measurements. However, very careful design and precise sensing head geometry are required if a single excitation source is used for driving both transmitter coils. In this paper we analyze the IB sensitivity to small perturbations of geometrical properties of coils. We propose a sensor design with dual current source and active induction balance scheme which overcomes the limitations of geometry-based balancing and potentially provides more efficient compensation of soil effects.
metal detector ; sensing head ; active induction balance ; humanitarian demining
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Podaci o prilogu
1-6.
2013.
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objavljeno
Podaci o matičnoj publikaciji
Journal of physics. Conference series
Bilas, Vedran ; McConnell, Gail ; Kyriacou, Panicos
IOP Publishing
1742-6588
1742-6596
Podaci o skupu
Sensors and their Applications XVII
predavanje
16.09.2013-18.09.2013
Dubrovnik, Hrvatska
Povezanost rada
Elektrotehnika