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Paper Abstract and Keywords
Presentation 2024-07-17 16:30
A Study on Antenna Placement for Foreign Objects Detection under Vehicle Body Using Wi-Fi CSI
Riku Tokumine, Masakatsu Ogawa (Sophia Univ.), Atsuhiro Takahashi, Hideto Shimada, Kentaro Mizuno (Toyota CRDL) SeMI2024-21
Abstract (in Japanese) (See Japanese page) 
(in English) In wireless power transfer systems for electric vehicles, the systems need to detect the intrusion of foreign metal objects and stop the power supply, as there is a fire risk if such objects enter the systems. To address this, we have comprehensively investigated a method to detect foreign metal objects by extracting changes in Wi-Fi CSI (Channel State Information). A Wi-Fi transmit and receive antenna is placed under the vehicle body. If a foreign metal object enters under the vehicle body while communicating with the antenna, our proposed system detects the intrusion using the change of CSI. To ensure the accuracy of detecting changes in CSI, we have meticulously considered the number of transmit and receive antennas and their placements must be carefully considered. In this paper, we have thoroughly investigated the change in detection accuracy of foreign metal objects in two different placements to clarify the most effective antenna placement. The results confirm that changing the antenna placements makes the detection range wider. This outcome demonstrated the robustness and reliability of our proposed method in terms of a wide range of areas in which foreign metal objects can be detected.
Keyword (in Japanese) (See Japanese page) 
(in English) Channel State Information / Foreign Object Detection / Under Vehicle Body / / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 109, SeMI2024-21, pp. 40-45, July 2024.
Paper # SeMI2024-21 
Date of Issue 2024-07-10 (SeMI) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SeMI2024-21

Conference Information
Committee RCC RCS SeMI NS SR RISING  
Conference Date 2024-07-17 - 2024-07-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Citizens Activities Promotion Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SeMI 
Conference Code 2024-07-RCC-RCS-SeMI-NS-SR-RISING 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Antenna Placement for Foreign Objects Detection under Vehicle Body Using Wi-Fi CSI 
Sub Title (in English)  
Keyword(1) Channel State Information  
Keyword(2) Foreign Object Detection  
Keyword(3) Under Vehicle Body  
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1st Author's Name Riku Tokumine  
1st Author's Affiliation Sophia University (Sophia Univ.)
2nd Author's Name Masakatsu Ogawa  
2nd Author's Affiliation Sophia University (Sophia Univ.)
3rd Author's Name Atsuhiro Takahashi  
3rd Author's Affiliation TOYOTA CENTRAL R&D LABS., INC. (Toyota CRDL)
4th Author's Name Hideto Shimada  
4th Author's Affiliation TOYOTA CENTRAL R&D LABS., INC. (Toyota CRDL)
5th Author's Name Kentaro Mizuno  
5th Author's Affiliation TOYOTA CENTRAL R&D LABS., INC. (Toyota CRDL)
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Speaker Author-1 
Date Time 2024-07-17 16:30:00 
Presentation Time 25 minutes 
Registration for SeMI 
Paper # SeMI2024-21 
Volume (vol) vol.124 
Number (no) no.109 
Page pp.40-45 
#Pages 6 
Date of Issue 2024-07-10 (SeMI) 

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