Analytical modelling of soil effects on electromagnetic induction sensor for humanitarian demining

7th Sensors & their Applications

Vasic´, D.^1 ; Ambru, D.^1 ; Bilas, V.^1

University of Zagreb, Faculty of Electrical Engineering and Computing FER-ZESOI, Unska 3, HR-10000 Zagreb, Croatia^1

关键词: Accurate compensation;    Arbitrary number;    Detector design;    Electromagnetic induction sensors;    Frequency dependent;    Humanitarian demining;    Magnetic layers;    Numerical implementation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/450/1/012052/pdf
DOI  :  10.1088/1742-6596/450/1/012052

来源: IOP

【 摘 要 】

Accurate compensation of the soil effect is essential for a new generation of sensitive classification-based electromagnetic induction landmine detectors. We present an analytical model for evaluation of the soil effect suitable for straightforward numerical implementation. The modelled soil consists of arbitrary number of conductive and magnetic layers. The solution region is truncated leading to the solution in form of a series rather than infinite integrals. Frequency-dependent permeability is inherent to the model, and time domain analysis can be made using DFT. In order to illustrate the model usage, we evaluate performances of three metal detector designs.