Paper Abstract and Keywords |
Presentation |
2020-03-03 10:15
Design and Evaluation of a Wi-Fi Backscatter Sensor for Activity Recognition Toru Maeda (Osaka Univ.), Akira Uchiyama (Osaka Univ./JST PRESTO), Teruo Higashino (Osaka Univ.) SeMI2019-134 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Human activity recognition (HAR) has been attracting people for ubiquitous systems such as healthcare, elderly care, and so on. HAR usually uses smartphones and smartwatches. However, those devices require maintenance for battery charge or replacement. To overcome this problem, we design a Wi-Fi backscatter sensor for ultra-low-power HAR. Backscatter sensors are attached to parts of human bodies (e.g., arms and shoes) and wearable things such as bags and nametags. To change states of the generation of backscatter signals, we employ physical switching by human motions. Then, we extract human motions by observing the shifts in the state of the existence of the backscatter signal. To investigate the feasibility of HAR, we develop a pedometer by the backscatter sensor. From the evaluation results, we have confirmed that the backscatter signal is detectable in a $3.5m times 7m$ room, and the step count error is up to 2% with 5.2 $mu$W energy consumption. |
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Reference Info. |
IEICE Tech. Rep., vol. 119, no. 436, SeMI2019-134, pp. 185-190, March 2020. |
Paper # |
SeMI2019-134 |
Date of Issue |
2020-02-24 (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) |
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SeMI2019-134 |
Conference Information |
Committee |
SeMI IPSJ-MBL IPSJ-UBI |
Conference Date |
2020-03-02 - 2020-03-03 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
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Paper Information |
Registration To |
SeMI |
Conference Code |
2020-03-SeMI-MBL-UBI |
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Japanese |
Title (in Japanese) |
(See Japanese page) |
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(See Japanese page) |
Title (in English) |
Design and Evaluation of a Wi-Fi Backscatter Sensor for Activity Recognition |
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1st Author's Name |
Toru Maeda |
1st Author's Affiliation |
Osaka University (Osaka Univ.) |
2nd Author's Name |
Akira Uchiyama |
2nd Author's Affiliation |
Osaka University/JST PRESTO (Osaka Univ./JST PRESTO) |
3rd Author's Name |
Teruo Higashino |
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Osaka University (Osaka Univ.) |
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Speaker |
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Date Time |
2020-03-03 10:15:00 |
Presentation Time |
25 minutes |
Registration for |
SeMI |
Paper # |
SeMI2019-134 |
Volume (vol) |
vol.119 |
Number (no) |
no.436 |
Page |
pp.185-190 |
#Pages |
6 |
Date of Issue |
2020-02-24 (SeMI) |
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