EFFECTS OF PLACEMENT ERRORS ON PERFORMANCE OF VLF METAL DETECTOR HEADS

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International Journal on Smart Sensing and Intelligent Systems

Professor Subhas Chandra Mukhopadhyay

Exeley Inc. (New York)

Subject: Computational Science & Engineering, Engineering, Electrical & Electronic

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VOLUME 4 , ISSUE 4 (December 2011) > List of articles

EFFECTS OF PLACEMENT ERRORS ON PERFORMANCE OF VLF METAL DETECTOR HEADS

Lawrence J. Carter * / Zhuoran Tang *

Keywords : metal detector, sensor head modelling, metal detector sensitivity

Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 4, Issue 4, Pages 675-685, DOI: https://doi.org/10.21307/ijssis-2017-462

License : (CC BY-NC-ND 4.0)

Received Date : 11-November-2011 / Accepted: 03-December-2011 / Published Online: 03-December-2011

ARTICLE

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. A correctly-aligned head could detect a gold ring target at a range of about 12 cm.

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