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Sensitivity maps for metal detector design

机译:金属探测器设计的灵敏度图

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Eddy-current or permeability-contrast based metal detectors may be characterized by static sensitivity maps, a new graphic representation that maps detector response to a standardized infinitesimal object in a static field. A sphere is shown to be a suitable standard object because its behavior describes, to within multiplicative constants, objects of arbitrary conductivity and permeability. Static sensitivity maps take full account of both the excitation and detection coil shapes. They are compact, easy to understand, closely related to industrial testing procedures, and likely to prove a useful design tool. Their usefulness is illustrated by examples based on a metal detector for which published data exist.
机译:基于涡流或渗透率对比的金属探测器的特征可能在于静态灵敏度图,这是一种新的图形表示形式,可将探测器响应映射到静态场中的标准化无穷小物体。球体是合适的标准物体,因为它的行为在乘法常数内描述了任意电导率和磁导率的物体。静态灵敏度图充分考虑了励磁线圈形状和检测线圈形状。它们紧凑,易于理解,与工业测试程序密切相关,并且可能证明是有用的设计工具。通过一个基于已发布数据的金属探测器的示例来说明它们的有用性。

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