An imaging system with planar PCB-coil sensor array

Xiaohui Hu, Wuqiang Yang

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    To detect hidden metallic objects, an imaging system with a planar PCB-coil sensor array has been developed. The sensor array consists of a driving board and a pickup board, with square spiral coil elements connected in series. Fast scan can be achieved by row-excitation and column-detection. Mutual inductance between the driving-pickup coil pairs is measured by an HP4192-based multi-channel measurement system. Using sensitivity coefficients, an image presenting conductivity/ permeability distribution can be obtained by interpolation and pixel-averaging from the normalised measurements. Initial tests show that the system can image both conductive and magnetic objects with an imaging depth of 10 mm and a spatial resolution of one coil element. The issues with cross-talk and image errors due to object covering multiple sensing elements should be compensated to improve image fidelity. © 2009 IEEE.
    Original languageEnglish
    Title of host publication2009 IEEE International Workshop on Imaging Systems and Techniques, IST 2009 - Proceedings|IEEE Int. Workshop Imaging Syst. Tech., IST - Proc.
    Place of PublicationUSA
    PublisherIEEE
    Pages26-31
    Number of pages5
    ISBN (Print)9781424434831
    DOIs
    Publication statusPublished - 2009
    Event2009 IEEE International Workshop on Imaging Systems and Techniques, IST 2009 - Hong Kong
    Duration: 1 Jul 2009 → …

    Conference

    Conference2009 IEEE International Workshop on Imaging Systems and Techniques, IST 2009
    CityHong Kong
    Period1/07/09 → …

    Keywords

    • Imaging system
    • Mutual inductance
    • Planar coil
    • Sensor array

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