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| Presentation | 2013-04-19 11:15 A Water Retention Control System for Humidity Sensing at High Temperature Tetsuo Tsujioka, Hiroyuki Iyota, Masahito Ohmori, Junko Yamagata (Osaka City Univ.), Michiaki Tanaka, Haruo Kitamura (Miyagawa Kasei)  CS2013-7 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Nowadays, the temperature and humidity control of superheated steam have become important research area in food drier, pasteurization and food processing. The authors have studied on economic humidity sensor that it is available even at high temperature of more than 200 degrees. The humidity sensor works based on relationship between dry-bulb and wet-bulb temperatures. To measure accurate wet-bulb temperature, water retention control is necessary for keeping temperature near the thermocouple for wet-bulb uniform inside wet material. The sensor's structure should be also well-considered so as to be suitable for water supply functionality. In this paper, porous ceramic is newly developed and used as wet material of the humidity sensor because of high durability against high temperature environment. For automatic water retention control, a prototype of the sensor has a water level sensor inside ceramic and a moisture sensor on the surface of the ceramic. The micro-controller operates a pinch valve to control the amount of water from a tank based on the sensor's outputs. We propose its control algorithm and confirm its validity by transfer function analysis. Moreover, the prototype of the sensor is implemented on the food processing machine and an experimental evaluation of the water retention control is made. We also confirm that the moisture sensor on the surface of the ceramic is effective for detecting reliability of the wet-bulb temperature measurements, by additional experiments. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Thermal engineering / Drying of foodstuff / Wet-bulb temperature / Thermocouple / Moisturizing and water retention control / Moisture detection / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 6, CS2013-7, pp. 35-41, April 2013. | |
| Paper # | CS2013-7 | |
| Date of Issue | 2013-04-11 (CS) | |
| ISSN | Print edition: ISSN 0913-5685 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) | |
| Notes on Review | This article is a technical report without peer review, and its polished version will be published elsewhere. | |
| Download PDF | CS2013-7 |
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| Conference Information | |
| Committee | CQ CS |
| Conference Date | 2013-04-18 - 2013-04-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Sado Island Development Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | SDN (Software-Defined Network), Cloud, Network Virtualization, Service Quality, Contents Delivery, etc |
| Paper Information | |
| Registration To | CS |
| Conference Code | 2013-04-CQ-CS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Water Retention Control System for Humidity Sensing at High Temperature |
| Sub Title (in English) | |
| Keyword(1) | Thermal engineering |
| Keyword(2) | Drying of foodstuff |
| Keyword(3) | Wet-bulb temperature |
| Keyword(4) | Thermocouple |
| Keyword(5) | Moisturizing and water retention control |
| Keyword(6) | Moisture detection |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Tetsuo Tsujioka |
| 1st Author's Affiliation | Osaka City University (Osaka City Univ.) |
| 2nd Author's Name | Hiroyuki Iyota |
| 2nd Author's Affiliation | Osaka City University (Osaka City Univ.) |
| 3rd Author's Name | Masahito Ohmori |
| 3rd Author's Affiliation | Osaka City University (Osaka City Univ.) |
| 4th Author's Name | Junko Yamagata |
| 4th Author's Affiliation | Osaka City University (Osaka City Univ.) |
| 5th Author's Name | Michiaki Tanaka |
| 5th Author's Affiliation | Miyagawa Kasei Industry, Co. Ltd (Miyagawa Kasei) |
| 6th Author's Name | Haruo Kitamura |
| 6th Author's Affiliation | Miyagawa Kasei Industry, Co. Ltd (Miyagawa Kasei) |
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| Speaker | Author-1 |
| Date Time | 2013-04-19 11:15:00 |
| Presentation Time | 25 minutes |
| Registration for | CS |
| Paper # | CS2013-7 |
| Volume (vol) | vol.113 |
| Number (no) | no.6 |
| Page | pp.35-41 |
| #Pages | 7 |
| Date of Issue | 2013-04-11 (CS) |
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