Proceedings ArticleDOI
Metal detector head analysis
Zhuoran Tang,Lawrence J. Carter +1 more
- pp 93-96
Reads0
Chats0
TLDR
In this paper, the effect of coil placement errors on detector sensitivity is investigated in a very low-frequency detector head with a bucking coil tracking the receive coil, provided that the received coil tracks the sensor head.Abstract:
Metal-detector performance depends heavily on the sensor head. Errors in coil placement within the head can lead to degradation in detector performance. Electromagnetic modelling of typical very-low-frequency detector heads shows the effect of coil placement errors on detector sensitivity. Provided the bucking coil ‘tracks’ the receive coil, required error corrections can remain small.read more
Citations
More filters
Journal ArticleDOI
Determining the Electromagnetic Polarizability Tensors of Metal Objects During In-Line Scanning
TL;DR: The general approach to determining the tensor during in-line scanning is introduced and it is suggested that tensor inversion is possible for the 2-D raster scan, but not for a single line scan.
Journal ArticleDOI
Two-Channel Metal Detector Using Two Perpendicular Antennas
TL;DR: It was feasible to operate two sensors, having different sensitivity range, simultaneously and to extend detection range from mm to cm scale, within practically acceptable interference.
Proceedings ArticleDOI
Single Coil Metal Detector and Classifier Based on Phase Measurement
Graziella Bedenik,Jefferson Silveira,Ítalo Santana Santos,Elyson Adan Nunes Carvalho,Jose Gilmar Carvalho,Raimundo C. S. Freire +5 more
TL;DR: In this article, the authors present a metal detector based on phase measurements, which can be used to detect and classify ferrous and non-ferrous metal objects based on the phase measurements.
Journal ArticleDOI
A differential probe design for large-range metal detector
TL;DR: In this paper, a model of differential probe applied to metal detector has been found and a fine adjustment has been proposed to offset the design error that can make the model more ideal.
References
More filters
Journal ArticleDOI
Induction coil sensors—a review
TL;DR: In this paper, the design methods for coils with air and ferromagnetic cores are compared and summarized, and the frequency properties of coil sensors are analyzed and various methods for output signal processing are presented, such as Rogowski coil, gradiometer sensors, vibrating coil sensors, tangential field sensors and needle probes.
Journal ArticleDOI
Basic analysis of a metal detector
TL;DR: An attempt is made to theoretically analyze the properties, such as size, conductivity, and permeability of the metal objects from the output, i.e., amplitude and phase of theMetal detector.
Patent
Pulse induction metal detector
TL;DR: In this article, an increased pulse transmit frequency and reduced integration time constant for rapid target response and improved sensitivity to low conductivity metals, including cupro-nickel alloys, platinum and gold.
Book
Jane's Mines and Mine Clearance
TL;DR: A guide to the aftermath of mine warfares can be found in this article, with details of countermeasures, procedures, organisational structures and much more, including countermeasures and countermeasures.
Proceedings ArticleDOI
Design and Implementation of a Low Cost VLF Metal Detector with Metal-Type Discrimination Capabilities
Mohammad S. Sharawi,M.I. Sharawi +1 more
TL;DR: In this paper, a very low frequency (VLF) handheld reconfigurable metal detector (MD) is presented for detecting three types of metals: iron, copper, and aluminum.