Conductivity Classification of Non-Magnetic Tilting Metals by Eddy Current Sensors
1
School of Instrument and Electronics, North University of China, Taiyuan 030051, China
2
School of Electrical and Electronic Engineering, University of Manchester, Manchester M60 1QD, UK
*
Authors to whom correspondence should be addressed.
Sensors 2020, 20(9), 2608; https://doi.org/10.3390/s20092608
Received: 30 March 2020
/
Revised: 29 April 2020
/
Accepted: 30 April 2020
/
Published: 3 May 2020
(This article belongs to the Special Issue Eddy Current Sensor)
Metallic waste classification benefits the environment, resource reuse and industrial economy. This paper provides a fast, non-contact and convenient method based on eddy current to classify metals. The characteristic phase to characterize different conductivity is introduced and extracted from mutual inductance in the form of amplitude and phase. This characteristic phase could offer great separation for non-tilting metals. Although it is hard to classify tilting metals by only using the characteristic phase, we propose the technique of phase compensation utilizing photoelectric sensors to obtain the rectified phase corresponding to the non-tilting situation. Finally, we construct a classification algorithm involving phase compensation. By conducting a test, a
classification rate is achieved.
View Full-Text
Keywords:
non-magnetic metal; tilting; conductivity classification; eddy current sensors; photoelectric sensors; characteristic phase
▼
Show Figures
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
MDPI and ACS Style
Du, Y.; Zhang, Z.; Yin, W.; Zhu, S.; Chen, Z.; Xu, H. Conductivity Classification of Non-Magnetic Tilting Metals by Eddy Current Sensors. Sensors 2020, 20, 2608. https://doi.org/10.3390/s20092608
AMA Style
Du Y, Zhang Z, Yin W, Zhu S, Chen Z, Xu H. Conductivity Classification of Non-Magnetic Tilting Metals by Eddy Current Sensors. Sensors. 2020; 20(9):2608. https://doi.org/10.3390/s20092608
Chicago/Turabian StyleDu, Yue, Zhijie Zhang, Wuliang Yin, Shuang Zhu, Ziqi Chen, and Hanyang Xu. 2020. "Conductivity Classification of Non-Magnetic Tilting Metals by Eddy Current Sensors" Sensors 20, no. 9: 2608. https://doi.org/10.3390/s20092608
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
