Numerical and Experimental Investigation of Time-Domain-Reflectometry-Based Sensors for Foreign Object Detection in Wireless Power Transfer Systems
Foreign object detection (FOD) is considered a key method for detecting objects in the air gap of a wireless charging system that could pose a risk due to strong inductive heating. This paper describes a novel method for the detection of metallic objects utilizing the principle of electric time doma...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/23/9425 |
| _version_ | 1827592033158561792 |
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| author | Martin Helwig Yun Xu Uwe Hentschel Anja Winkler Niels Modler |
| author_facet | Martin Helwig Yun Xu Uwe Hentschel Anja Winkler Niels Modler |
| author_sort | Martin Helwig |
| collection | DOAJ |
| description | Foreign object detection (FOD) is considered a key method for detecting objects in the air gap of a wireless charging system that could pose a risk due to strong inductive heating. This paper describes a novel method for the detection of metallic objects utilizing the principle of electric time domain reflectometry. Through an analytical, numerical and experimental investigation, two key parameters for the design of transmission lines are identified and investigated with respect to the specific constraints of inductive power transfer. For this purpose, a transient electromagnetic simulation model is established to obtain and compare the sensor impedance and reflection coefficients with experimental data. The measurement setup is based on parametrically designed sensors in laboratory scale, using an EUR 2 coin as an exemplary test object. Consequently, the proposed simulation model has been successfully validated in this study, providing a comprehensive quantitative and qualitative analysis of the major transmission line design parameters for such applications. |
| first_indexed | 2024-03-09T01:42:59Z |
| format | Article |
| id | doaj.art-5ef40ab24d1244778c961b6e8e7e0fcc |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T01:42:59Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5ef40ab24d1244778c961b6e8e7e0fcc2023-12-08T15:25:57ZengMDPI AGSensors1424-82202023-11-012323942510.3390/s23239425Numerical and Experimental Investigation of Time-Domain-Reflectometry-Based Sensors for Foreign Object Detection in Wireless Power Transfer SystemsMartin Helwig0Yun Xu1Uwe Hentschel2Anja Winkler3Niels Modler4Institut für Leichtbau und Kunststofftechnik, Technische Universität Dresden, 01307 Dresden, GermanyInstitut für Leichtbau und Kunststofftechnik, Technische Universität Dresden, 01307 Dresden, GermanyInstitut für Leichtbau und Kunststofftechnik, Technische Universität Dresden, 01307 Dresden, GermanyInstitut für Leichtbau und Kunststofftechnik, Technische Universität Dresden, 01307 Dresden, GermanyInstitut für Leichtbau und Kunststofftechnik, Technische Universität Dresden, 01307 Dresden, GermanyForeign object detection (FOD) is considered a key method for detecting objects in the air gap of a wireless charging system that could pose a risk due to strong inductive heating. This paper describes a novel method for the detection of metallic objects utilizing the principle of electric time domain reflectometry. Through an analytical, numerical and experimental investigation, two key parameters for the design of transmission lines are identified and investigated with respect to the specific constraints of inductive power transfer. For this purpose, a transient electromagnetic simulation model is established to obtain and compare the sensor impedance and reflection coefficients with experimental data. The measurement setup is based on parametrically designed sensors in laboratory scale, using an EUR 2 coin as an exemplary test object. Consequently, the proposed simulation model has been successfully validated in this study, providing a comprehensive quantitative and qualitative analysis of the major transmission line design parameters for such applications.https://www.mdpi.com/1424-8220/23/23/9425electric time domain reflectometrywireless power transferwireless charginginductive power transferforeign object detectionmetal object detection |
| spellingShingle | Martin Helwig Yun Xu Uwe Hentschel Anja Winkler Niels Modler Numerical and Experimental Investigation of Time-Domain-Reflectometry-Based Sensors for Foreign Object Detection in Wireless Power Transfer Systems Sensors electric time domain reflectometry wireless power transfer wireless charging inductive power transfer foreign object detection metal object detection |
| title | Numerical and Experimental Investigation of Time-Domain-Reflectometry-Based Sensors for Foreign Object Detection in Wireless Power Transfer Systems |
| title_full | Numerical and Experimental Investigation of Time-Domain-Reflectometry-Based Sensors for Foreign Object Detection in Wireless Power Transfer Systems |
| title_fullStr | Numerical and Experimental Investigation of Time-Domain-Reflectometry-Based Sensors for Foreign Object Detection in Wireless Power Transfer Systems |
| title_full_unstemmed | Numerical and Experimental Investigation of Time-Domain-Reflectometry-Based Sensors for Foreign Object Detection in Wireless Power Transfer Systems |
| title_short | Numerical and Experimental Investigation of Time-Domain-Reflectometry-Based Sensors for Foreign Object Detection in Wireless Power Transfer Systems |
| title_sort | numerical and experimental investigation of time domain reflectometry based sensors for foreign object detection in wireless power transfer systems |
| topic | electric time domain reflectometry wireless power transfer wireless charging inductive power transfer foreign object detection metal object detection |
| url | https://www.mdpi.com/1424-8220/23/23/9425 |
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