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Development of sensor arrays for electromagnetic tomography: compensation of large background signal values.

Research output: Contribution to Journal/MagazineJournal article

  • Z. Z. Yu
  • A. J. Peyton
<mark>Journal publication date</mark>1998
<mark>Journal</mark>Transactions of the Institute of Measurement and Control
Issue number4
Number of pages8
Pages (from-to)195-202
Publication StatusPublished
<mark>Original language</mark>English


A new electromagnetic inductance tomography (EMT) system has been developed with 16 excitation coils, 16 detection coils and a circular cross-section region of interest. This paper highlights one aspect of the sensor design, the compensation of the largest empty space signal. The system is capable of resolving a conductive or ferromagnetic object positioned in the centre with a diameter which is approximately 5% of that of the region of interest. This resolution is comparable to other electrical tomographic techniques. A description of the sensor array and a selection of sensitivity maps are also presented.