| Project/Area Number |
13450165
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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 |
System engineering
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
TAMAKI Shiro University of the Ryukyus, College of Engineering, Professor, 工学部, 教授 (80163666)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHINAGA Yasutoshi University of the Ryukyus, College of Agriculture, Professor, 農学部, 教授 (80045129)
NAKAMURA Morikazu University of the Ryukyus, College of Engineering, Associate Professor, 工学部, 助教授 (80237437)
YAGA Minoru University of the Ryukyus, College of Engineering, Associate Professor, 工学部, 助教授 (60220117)
SENAHA Izuru University of the Ryukyus, College of Engineering, Assistant Professor, 工学部, 助手 (70253945)
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| Project Period (FY) |
2001 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥12,400,000 (Direct Cost: ¥12,400,000)
Fiscal Year 2004: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2003: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2002: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2001: ¥6,400,000 (Direct Cost: ¥6,400,000)
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| Keywords | Inverter Frequency Control / Internet Supervisory Control / Battery-less Solar-Power Generator / Optimal Irrigation System / Pomp up of Irrigation / provisional Internet System / Wireless LAN / Optimal System Design |
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| Research Abstract |
Natural energy is the focus of public attention as a clean substitutive energy for petroleum. In particular, photovoltaic solar power generation system is utilized for lighting as independent power source, and also begins to widen its sphere of activity in various fields.
In general, the battery has been used to store the electric power that is unstable and variable photovoltaic solar energy. However, using a battery, we must consider the maintenance such as supplement of electricity liquid and securing of the storage place. In addition to that, destruction of battery has harmful influences on the environment, so we cannot avoid these problems.
Therefore, the followings are required as a condition of independent power source.
1)To save the troublesome maintenance as much as possible.
2)To reduce harmful influences on environmental load.
In this research, we could overcome the above two requirements and develop a photovoltaic solar power generation system with an autonomous battery-less, which is the purpose of the irrigation water for agriculture. Furthermore, we succeeded to establish a supervisory remote control system by the internet.
Our main object is to build the remote measurement and control system of the agricultural growth condition in the greenhouse. To achieve that, the network communication system needs to be constructed based on wireless LAN and mobile PHS. To the consequence, we realize a fully automatic measurement and control system with no human labors.
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