Influence of Measuring Coil Geometry on Detection Performance of Eddy Current Sensor

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Yang, Xu^1 ; Feng, Yongbao^1 ; Li, Shuzhi^1

Xi'an Hi-tech Institute, Xi'an

710025, China^1

关键词: Detection performance;    Eddy current sensors;    Excitation currents;    Inner diameters;    Magnetic field distribution;    Magnetic induction intensity;    Outer diameters;    Three dimensional finite element model;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/4/042045/pdf
DOI  :  10.1088/1757-899X/452/4/042045

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The measuring coil geometry has a direct influence on the magnetic field distribution, and the magnetic field distribution affects the detection performance of the eddy current sensor. The influence of coil inner diameter and thickness on magnetic induction intensity of the coil was theoretically analyzed. The three-dimensional finite element model of the main spool of the overflow valve was measured using ANSYS Maxwell. The other factors such as coil turns and excitation current intensity were analyzed. Under the condition of the coil inner and outer diameter and thickness influence on the magnetic induction of the coil, the influence of coil geometry on the linearity and sensitivity of the coil is obtained. The results show that the coil geometry influences the detection performance of the sensor, and the linearity and sensitivity of the sensor can be improved by changing the inner and outer diameter and thickness of the coil.