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Paper Abstract and Keywords
Presentation 2021-05-10 10:30
An Implementation of Ventilation Request Function in Air-Conditioning Guidance System
Masaki Sakagami, Yuanzhi Huo, Nobuo Funabiki, Minoru Kuribayashi (Okayama Univ.) LOIS2021-1
Abstract (in Japanese) (See Japanese page) 
(in English) For optimizing the air-conditioning environment in a room, we have developed the air-conditioning guidance system (AC-Guide) using Raspberry Pi, to output ON/OFF instruction messages of air-conditioning equipements based on the DI (discomfort index) that is calculated from the temperature and relative humidity. Currently, COVID-19 has become the serious problem around the world. In this study, we implement the ventilation instruction function in this system to avoid the infections. The CO2 concentration in the room is measured using the sensor, and the ventilation guidance message when it exceeds the given threshold. Besides, the opening and closing of windows and doors are detected using images taken by the Web camera to confirm the ventilation action. Furthermore, the entrance and exit of a person through the door is detected using human detecting sensor and images, to improve the ventilation instruction timing depending on the number of people in the room. For evaluations, we implement the proposals on AC-Guide and confirm the validity of them.
Keyword (in Japanese) (See Japanese page) 
(in English) air-conditioning environment optimization / CO2 concentration / ventilation instruction / opening and closing detection of windows and doors / entrance and exit detection of person / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 12, LOIS2021-1, pp. 1-6, May 2021.
Paper # LOIS2021-1 
Date of Issue 2021-05-03 (LOIS) 
ISSN Online edition: ISSN 2432-6380
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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Conference Information
Conference Date 2021-05-10 - 2021-05-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To LOIS 
Conference Code 2021-05-LOIS-SPT-GN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Implementation of Ventilation Request Function in Air-Conditioning Guidance System 
Sub Title (in English)  
Keyword(1) air-conditioning environment optimization  
Keyword(2) CO2 concentration  
Keyword(3) ventilation instruction  
Keyword(4) opening and closing detection of windows and doors  
Keyword(5) entrance and exit detection of person  
1st Author's Name Masaki Sakagami  
1st Author's Affiliation Okayama University (Okayama Univ.)
2nd Author's Name Yuanzhi Huo  
2nd Author's Affiliation Okayama University (Okayama Univ.)
3rd Author's Name Nobuo Funabiki  
3rd Author's Affiliation Okayama University (Okayama Univ.)
4th Author's Name Minoru Kuribayashi  
4th Author's Affiliation Okayama University (Okayama Univ.)
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Speaker Author-1 
Date Time 2021-05-10 10:30:00 
Presentation Time 25 minutes 
Registration for LOIS 
Paper # LOIS2021-1 
Volume (vol) vol.121 
Number (no) no.12 
Page pp.1-6 
Date of Issue 2021-05-03 (LOIS) 

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