基于涡流检测的金属标签识别阻抗特性研究

2016 10th IEEE International Conference on Anti-counterfeiting, Security, and Identification (ASID) Pub Date : 2016-09-01 DOI:10.1109/ICASID.2016.7873926

Hongguang Xu, Di Song, Yin Zhao

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引用次数: 5

摘要

裂纹在金属部件中绝对是有害的，但它在金属条形码标签(MBL)应用中可能是有用的，MBL是一种特殊的条形码，由金属部件的非支撑部件表面雕刻的微小缺口和空间组成。与应用于无损检测(NDE)的涡流检测(ECT)的明显不同的要求是，对于MBL中的高条形码密度，ECT必须以高分辨率区分元素(缺口和空间)。为了获得最佳的检测性能，必须研究不同条件下mbl产生的电磁信号。本文在ECT技术的基础上，给出了不同几何形状和电磁参数的元件对具有不同几何形状和电磁参数的线圈的阻抗变化。此外，还研究了元件对线圈阻抗的影响。定义了MBL的分辨率，分析了包含多个元件的MBL引起线圈阻抗变化的特性。

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Study on metal tag identification impedance characteristics based on eddy testing

A crack is definitely harmful in metallic components, yet it is maybe useful in a metal barcode label (MBL) application which is a special barcode made up of tiny notches and spaces sculptured in the surface of the un-supporting parts of a metallic component. The obvious different requirement from the eddy current testing (ECT) applied in a non-destructive evaluating (NDE) is that an ECT must distinguish elements (notches and spaces) with high resolution for the high barcode density in a MBL. To achieve the optimal detection performance, the electromagnetic signals induced by MBLs must be studied under various conditions. In this paper, the impedance change of coils with various geometries and electromagnetic (EM) parameters has been given caused by the elements with various geometries and EM parameters, based on the ECT technique. Also the coverage is investigated, in which an element can effect on the coil impedance. The resolution of the MBL is defined and the characteristics of the coil impedance change caused by a MBL containing multiple elements have been analyzed.

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来源期刊

2016 10th IEEE International Conference on Anti-counterfeiting, Security, and Identification (ASID)

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