2007 Fiscal Year Final Research Report Summary
Development Research for Crop Growth Environment Sensing Grid in Large-scale Spaces
| Project/Area Number |
17380149
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Agricultural environmental engineering
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| Research Institution | University of Tsukuba |
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Principal Investigator |
MIZUTANI Koichi University of Tsukuba, Gradate School of Systems and Information Engineering, Professor (50241790)
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| Co-Investigator(Kenkyū-buntansha) |
WAKATSUKI Naoto Uniersity of Tsukuba, Gradate School of Systems and Information Engineering, Assistant Professor (40294433)
KAWAMURA Youhei Uniersity of Tsukuba, Gradate School of Systems and Information Engineering, Associate Professor (40361323)
SASE Sadanori National Institute for Rural Engineering, Department of Rural Technologies, チーム長 (80373223)
OKUSHIMA Rimi National Institute for Rural Engineering, Department of Rural Technologies, Cheif Researcher (10373226)
ISHII Masahisa National Institute for Rural Engineering, Department of Rural Technologies, Senior Reasearcher (10343766)
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| Project Period (FY) |
2005 – 2007
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| Keywords | sensing grid / monitoring / sound probe / network / temperature measurement / wind direction and wind velocity measurement / plant factory / protecewd horticulture |
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| Research Abstract |
In the large-scale agricultural management, to improve the efficiency of productivity, it is necessary for farming industry to monitoring air temperature, fog, geologic condition, and condition, and soil property, etc. Our research intended to project a new observation system called "sensing grid" for the large-scale space to monitor the parameters for crop growth environment. We focused our attention on the sound velocity that has relationship between these parameters, and assembled theories between the velocity and the parameters. Based on these theories, we proposed a sound probe system that enables to precisely measure space mean values of air temperature and wind velocity by measuring time-of-flight of sound. As experimental results, we appraised relationship between parameters and sound velocity by using the sound probe. To enable monitoring environment in large-space by the sound probe more easily, we expanded this system and proposed a network acoustic sensing system. In this s
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ystem, the probes transmit and wirelessly receive a measured data each other. We realized the monitoring various parameters in more long and wide area with simple and effective technique. The experimental results suggest that the parameters for the crop growth environment can be obtained by the network sensor system. Two dimensional distributions of wind direction and wind velocity and temperature were measured by the sound probes and reconstructed by the CT method. We also proposed network sensing grid monitoring system to enable monitoring system to enable monitoring environment in large-space. By using this system, we can methodically obtain various parameters. This system consists of acoustic sensors that are dispersed in grid pattern. We can get parameters from controller that consolidates each parameter from arbitrary combination of sensors. Moreover. Unit-cell method allows this system more greater flexibility. We get temperature distribution by matrix method with one unit-cell. These obtained results suggest that our system can make a contribution for not only large-scale bioplant by offering environment-control and improving the efficiency of crop productivity but also protected horticulture engineering, or whole industry. Less
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Research Products
(87 results)
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[Presentation] 超音波プロープを用いる横風風速測定2007
Author(s)
昆昭彦・若槻尚斗・水谷孝一・石井雅久・佐瀬勘紀
Organizer
農業環境工学関連2007年合同大会
Place of Presentation
東京農工大学(東京)
Year and Date
2007-09-13
Description
「研究成果報告書概要(和文)」より
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[Presentation] 音響反射を用いる二軸風速計2007
Author(s)
齋藤育・南出歩・水谷孝一・若槻尚斗
Organizer
日本音響学会2007年春季研究発表会
Place of Presentation
芝浦工業大学(東京)
Year and Date
2007-03-14
Description
「研究成果報告書概要(和文)」より
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[Presentation] 音響遅延線を用いる風速測定2006
Author(s)
昆昭彦・水谷孝一・若槻尚斗
Organizer
日本音響学会2006年秋季研究発表会
Place of Presentation
金沢大学(金沢市)
Year and Date
2006-09-13
Description
「研究成果報告書概要(和文)」より
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