A Novel Dual Modality Sensor With Sensitivities to Permittivity, Conductivity, and Permeability
A Novel Dual Modality Sensor With Sensitivities to Permittivity, Conductivity, and Permeability
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DOI：
10.1109/jsen.2017.2767380
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发表时间：
2018-01-01
影响因子：
4.3
通讯作者：
Yin, Wuliang
中科院分区：
文献类型：
--
作者：
Avila, Jorge R. Salas;How, Kin Yau;Yin, Wuliang
在本文中，电磁传感器，它可以同时在电容和电感模式与敏感的介电常数，电导率和磁导率的开发，并提出了一种新的测量策略。该传感器由两个轨道宽度为4 mm的平面螺旋线圈组成，这促进了其电容模式。电容耦合在共模下测量，而电感耦合在差模下测量。在电容模式下，传感器对介电常数的变化敏感，即，电介质材料分布;而在感应模式下，它对导磁材料和导电材料敏感。此外，它表明，传感器可以同时测量介电和导电材料。这种新型的传感元件已经设计和实现。实验结果验证了该方法在双模态测量中的有效性。
In this paper, an electromagnetic sensor which can operate simultaneously in capacitive and inductive modalities with sensitivities to permittivity, conductivity, and permeability is developed, and a novel measurement strategy is proposed accordingly. The sensor is composed of two planar spiral coils with a track width of 4 mm, which promotes its capacitive mode. The capacitive coupling is measured in common mode, while the inductive coupling is measured in differential mode. In capacitive mode, the sensor is sensitive to changes in permittivity, i.e., the dielectric material distribution; while in inductive mode, it is sensitive to magnetically permeable material and electrically conductive material. Furthermore, it is demonstrated that the sensor can simultaneously measure dielectric and conductive materials. This novel sensing element has been designed and implemented. Experimental results verified its effectiveness in dual modality measurement.