Measuring the Magnetic Polarizability Tensor Using an Axial Multi-Coil Geometry
Measuring the Magnetic Polarizability Tensor Using an Axial Multi-Coil Geometry
复制标题
使用轴向多线圈几何形状测量磁极化率张量
DOI：
10.1109/jsen.2021.3088809
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发表时间：
2021
影响因子：
4.3
通讯作者：
A. Peyton
中科院分区：
文献类型：
--
作者：
T. Özdeğer;J. L. Davidson;W. van Verre;L. A. Marsh;W. Lionheart;A. Peyton
磁极化张量（MPT）是导电或磁性物体的代表性性质，其包括关于物体的特性（诸如形状、尺寸和材料）的信息。MPT与金属检测（MD）特别相关，并且可以用于通过帮助区分物体来提高MD性能。本文介绍了一种用于测量杀伤人员地雷和金属杂物等直径达130 mm的物体的MPT的仪器。该仪器采用新颖的多线圈几何结构，在包含测试对象的体积上产生均匀的电磁场，以准确地确定MPT。系统的性能测试表明，MPT的峰值方差约为15 mm3。对于涉及铜盘的测试，典型的实验重复性优于1%。此外，模拟数据以及先前公布的模拟和实验数据被用作实验结果的验证方法。这些和测量的MPT的例子目标之间的良好协议被认为是，证明了系统的能力，表征金属物体。
The Magnetic Polarizability Tensor (MPT) is a representative property of an electrically conducting or magnetic object that includes information about the object’s characteristics such as, shape, size and material. The MPT is especially relevant to metal detection (MD) and can be used to improve MD performance by helping to distinguish between objects. This paper describes an instrument intended to measure the MPT of objects such as anti-personnel landmines and metallic clutter, up to 130 mm in diameter. The instrument uses a novel multi-coil geometry to generate a uniform electromagnetic field over the volume containing the test object to accurately determine the MPT. Performance tests of the system shows peak variance in the MPT is approximately 15 mm3. Typical experimental repeatability is better than one percent for tests involving copper disks. Additionally, simulated data as well as previously published simulated and experimental data are used as a validation method of the experimental results. Good agreement between these and the measured MPTs of example targets are seen, proving the system’s capability of characterizing metallic objects.