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Paper Abstract and Keywords
Presentation 2021-10-08 11:05
[Encouragement Talk] A computer time correction method based on the wide range of temperature deviation characteristics of clock signal sources
Kiyonari Katsura, Naoto Hoshikawa (NIT, Oyama College), Atsushi Shiraki, Tomoyoshi Ito (Chiba Univ.) NS2021-80
Abstract (in Japanese) (See Japanese page) 
(in English) System clocks for IoT devices are generally inaccurate. Therefore, time synchronization is necessary for normal program operation. In particular, time synchronization using the Internet or satellite signals for IoT devices is not suitable due to the high power consumption for communication and radio reception. In order to solve this problem, a time correction technology has been proposed that learns the relationship between the time deviation and the CPU core temperature, and corrects the time deviation based on the temperature. In the previous study, the data was collected by letting the natural temperature change in the room to learn the temperature characteristics. Therefore, the temperature range was affected by the season, and the necessary temperature range could not be obtained when the correction was executed.
In this paper, we solve this problem by using a thermostatic bath to obtain the time drift temperature characteristics. In the experiment, we actually performed the characteristic learning using a thermostatic bath and compared it with the conventional characteristic learning by natural temperature change. The effect of changing the method of property acquisition on the correction accuracy is also discussed.
Keyword (in Japanese) (See Japanese page) 
(in English) time correction / CPU core temperature / thermostatic chamber / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 185, NS2021-80, pp. 64-69, Oct. 2021.
Paper # NS2021-80 
Date of Issue 2021-09-29 (NS) 
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 NS2021-80

Conference Information
Committee NS  
Conference Date 2021-10-06 - 2021-10-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network architecture (Overlay, P2P, Ubiquitous network, Scale-free network, Active network, NGN/NwGN, IoT, Edge computing, Next generation packet transport (High speed Ethernet, IP over WDM, Multi-service package technology, MPLS), Grid, etc. 
Paper Information
Registration To NS 
Conference Code 2021-10-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A computer time correction method based on the wide range of temperature deviation characteristics of clock signal sources 
Sub Title (in English)  
Keyword(1) time correction  
Keyword(2) CPU core temperature  
Keyword(3) thermostatic chamber  
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1st Author's Name Kiyonari Katsura  
1st Author's Affiliation National Institute of Technology, Oyama College (NIT, Oyama College)
2nd Author's Name Naoto Hoshikawa  
2nd Author's Affiliation National Institute of Technology, Oyama College (NIT, Oyama College)
3rd Author's Name Atsushi Shiraki  
3rd Author's Affiliation Chiba University (Chiba Univ.)
4th Author's Name Tomoyoshi Ito  
4th Author's Affiliation Chiba University (Chiba Univ.)
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Speaker Author-1 
Date Time 2021-10-08 11:05:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2021-80 
Volume (vol) vol.121 
Number (no) no.185 
Page pp.64-69 
#Pages 6 
Date of Issue 2021-09-29 (NS) 

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