Determining the Electromagnetic Polarizability Tensors of Metal Objects During In-Line Scanning
Determining the Electromagnetic Polarizability Tensors of Metal Objects During In-Line Scanning
复制标题
在线扫描期间确定金属物体的电磁极化率张量
DOI：
10.1109/tim.2016.2514701
复制
发表时间：
2016
影响因子：
5.6
通讯作者：
A. Peyton
中科院分区：
文献类型：
--
作者：
Yifei Zhao;W. Yin;C. Ktistis;D. Butterworth;A. Peyton
在金属检测系统中，检测器对金属物体的响应可以从物体的电磁极化率张量近似。相反，张量可以在检测器和对象相对于彼此移动时从多位置测量确定。本文介绍并阐述了在线扫描过程中确定张量的一般方法。两个常见的应用场景被认为是，共享一个类似的考虑在计算的张量分量。第一种是地雷或战争遗留爆炸物探测器，探测器在物体上方的表面上进行扫描。该逆问题的条件取决于线圈的几何形状和测量协议，这一点目前尚未完全理解。我们的结果考虑两种情况下，即，一个单一的线扫描的对象作为两个极端的情况。结果表明，张量反演是可能的二维光栅扫描，但不是一个单一的线扫描。第二种应用是走廊型金属探测器，与工业生产线的典型探测器一起使用。在这里，提出了一种新的旋转测量方法，并检查的情况下，简单的同轴传感器线圈和在线扫描。最后，针对新的旋转测量方法，分析了不同的反演算法。
In metal detection systems, the response of a detector to a metal object may be approximated from the electromagnetic polarizability tensor of the object. Conversely, the tensors may be determined from multiposition measurements as the detector and object are moved relative to each other. This paper introduces and sets out the general approach to determining the tensor during in-line scanning. Two common application scenarios are considered, which share a similar consideration in the calculation of the tensor components. The first is the case for detectors of landmines or explosive remnants of war, where the detector is scanned on a surface above the object. The condition of this inverse problem depends on the geometry of the coil(s) and the measurement protocol, which at present is not fully understood. Our results consider two cases, namely, a single line scan over the object as two extreme cases. The results suggest that tensor inversion is possible for the 2-D raster scan, but not for a single line scan. The second application is a conveyor-type metal detector, which is used with a typical detector for industrial process lines. Here, a new rotation measurement method is proposed and examined for the case of simple coaxial sensor coils and in-line scanning. Finally, different inverse methods are analyzed for the new rotation measurement method.
DOI：
10.1109/tim.2014.2324791
发表时间：
2014-06
影响因子：
5.6
作者：
Yifei Zhao;W. Yin;C. Ktistis;D. Butterworth;A. Peyton
通讯作者：
Yifei Zhao;W. Yin;C. Ktistis;D. Butterworth;A. Peyton
使用步入式金属探测器进行三维物体定位和单频率磁极化张量的反演
影响因子：
2.4
作者：
Marsh L
通讯作者：
Marsh L
使用步入式金属探测器确定多个物体的磁极化率张量和三维物体位置
影响因子：
2.4
作者：
Marsh L
通讯作者：
Marsh L