计量学报2024，Vol.45Issue(6)：907-914,8.DOI:10.3969/j.issn.1000-1158.2024.06.17
基于宽频激励的平面电磁层析成像方法
Planar Electromagnetic Tomography Based on Wide-band Excitation
摘要
Abstract
In order to achieve simultaneous detection and imaging of high and low conductivity materials,a wide-band excitation method for the planar electromagnetic tomography is designed.Based on the electromagnetic characteristics of the coil and experimental results,an optimization method for the design of the planar coil array is investigated.Through the finite element model,the sensitivity matrix is obtained using the perturbation method and an improvement is proposed for the uniformity of the sensitivity matrix in order to improve the quality of image reconstruction.The image reconstruction of objects with different conductivity is investigated through the simulation model and the results verify that the proposed planar electromagnetic tomography method can reconstruct high and low conductivity materials.A wide-band excitation system for the planar electromagnetic tomography is built and experimental investigations are conducted on various materials with different conductivity.The experimental results show that the average correlation coefficient is 0.77 and the average location error is 4.46 mm.关键词
电磁计量/电磁层析成像/平面线圈阵列/电导率/灵敏度矩阵/宽频激励Key words
electromagnetism metrology/electromagnetic tomography/planar coil array/conductivity/sensitivity matrix/wide-band excitation分类
通用工业技术引用本文复制引用
张文彪,耿一健,颜鹏旭..基于宽频激励的平面电磁层析成像方法[J].计量学报,2024,45(6):907-914,8.基金项目
北京市自然科学基金(3242023) （3242023）
