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Proceedings Paper

Magnetic induction tomography of objects for security applications
Author(s): Rob Ward; Max Joseph; Abbi Langley; Stuart Taylor; Joe C. Watson
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Paper Abstract

A coil array imaging system has been further developed from previous investigations, focusing on designing its application for fast screening of small bags or parcels, with a view to the production of a compact instrument for security applications. In addition to reducing image acquisition times, work was directed toward exploring potential cost effective manufacturing routes. Based on magnetic induction tomography and eddy-current principles, the instrument captured images of conductive targets using a lock-in amplifier, individually multiplexing signals between a primary driver coil and a 20 by 21 imaging array of secondary passive coils constructed using a reproducible multiple tile design. The design was based on additive manufacturing techniques and provided 2 orthogonal imaging planes with an ability to reconstruct images in less than 10 seconds. An assessment of one of the imaging planes is presented. This technique potentially provides a cost effective threat evaluation technique that may compliment conventional radiographic approaches.

Paper Details

Date Published: 6 October 2017
PDF: 8 pages
Proc. SPIE 10438, Emerging Imaging and Sensing Technologies for Security and Defence II, 104380G (6 October 2017); doi: 10.1117/12.2278888
Show Author Affiliations
Rob Ward, AWE plc (United Kingdom)
Max Joseph, AWE plc (United Kingdom)
Abbi Langley, AWE plc (United Kingdom)
Stuart Taylor, AWE plc (United Kingdom)
Joe C. Watson, AWE plc (United Kingdom)

Published in SPIE Proceedings Vol. 10438:
Emerging Imaging and Sensing Technologies for Security and Defence II
Keith L. Lewis; Richard C. Hollins; Gerald S. Buller; Robert A. Lamb, Editor(s)

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