Paper Abstract and Keywords |
Presentation |
2022-05-27 10:08
Experiment for indoor positioning system based on retraining method of signal strength Masaaki Yamamoto, Hiromitsu Nakagawa, Shigenori Matsumoto, Hiroyuki Kuriyama (Hitachi) SeMI2022-11 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Covid-19 is continuing to spread around the world. Office workers therefore work in several sites to balance work and prevetation of its. A positioning system for estimating worker’s positions is attracting considerable attention. Given this background, we propose a machine-learning based positioning system. In this system, a positioning model is generated from the training data measured by smartphones. The model estimates a worker’s position from the test data. When the training data and the test data were measured by using different types of smartphones, a positioning error increased. In addition, a different holding state of smartphone increased the error, too. To reduce the error, we developed a positioning system to update the training data according to the holding states and the types of smartphones. We conducted an experiment for three month with 187 employees to evaluate RMSE (Root Mean Square Error) of the positioning system. When using different holding states and the type of smartphone, RMSE of the system was reduced to 2.16 m from 4.45 m. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Indoor positioning / Signal strength / Retraining / Smartphone / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 122, no. 46, SeMI2022-11, pp. 49-52, May 2022. |
Paper # |
SeMI2022-11 |
Date of Issue |
2022-05-19 (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 |
SeMI2022-11 |
Conference Information |
Committee |
SeMI IPSJ-DPS IPSJ-MBL IPSJ-ITS |
Conference Date |
2022-05-26 - 2022-05-27 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
|
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
|
Paper Information |
Registration To |
SeMI |
Conference Code |
2022-05-SeMI-DPS-MBL-ITS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Experiment for indoor positioning system based on retraining method of signal strength |
Sub Title (in English) |
|
Keyword(1) |
Indoor positioning |
Keyword(2) |
Signal strength |
Keyword(3) |
Retraining |
Keyword(4) |
Smartphone |
Keyword(5) |
|
Keyword(6) |
|
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Masaaki Yamamoto |
1st Author's Affiliation |
Hitachi Ltd. (Hitachi) |
2nd Author's Name |
Hiromitsu Nakagawa |
2nd Author's Affiliation |
Hitachi Ltd. (Hitachi) |
3rd Author's Name |
Shigenori Matsumoto |
3rd Author's Affiliation |
Hitachi Ltd. (Hitachi) |
4th Author's Name |
Hiroyuki Kuriyama |
4th Author's Affiliation |
Hitachi Ltd. (Hitachi) |
5th Author's Name |
|
5th Author's Affiliation |
() |
6th Author's Name |
|
6th Author's Affiliation |
() |
7th Author's Name |
|
7th Author's Affiliation |
() |
8th Author's Name |
|
8th Author's Affiliation |
() |
9th Author's Name |
|
9th Author's Affiliation |
() |
10th Author's Name |
|
10th Author's Affiliation |
() |
11th Author's Name |
|
11th Author's Affiliation |
() |
12th Author's Name |
|
12th Author's Affiliation |
() |
13th Author's Name |
|
13th Author's Affiliation |
() |
14th Author's Name |
|
14th Author's Affiliation |
() |
15th Author's Name |
|
15th Author's Affiliation |
() |
16th Author's Name |
|
16th Author's Affiliation |
() |
17th Author's Name |
|
17th Author's Affiliation |
() |
18th Author's Name |
|
18th Author's Affiliation |
() |
19th Author's Name |
|
19th Author's Affiliation |
() |
20th Author's Name |
|
20th Author's Affiliation |
() |
Speaker |
Author-1 |
Date Time |
2022-05-27 10:08:00 |
Presentation Time |
18 minutes |
Registration for |
SeMI |
Paper # |
SeMI2022-11 |
Volume (vol) |
vol.122 |
Number (no) |
no.46 |
Page |
pp.49-52 |
#Pages |
4 |
Date of Issue |
2022-05-19 (SeMI) |
|