2016 Fiscal Year Final Research Report
Development of underwater visible light communication device using Nonlinear synchronization
| Project/Area Number |
26420838
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Tokyo University of Marine Science and Technology (2015-2016)
Japan Agency for Marine-Earth Science and Technology (2014) |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
ZHANG Feifei 東京海洋大学, 学術研究院, 教授 (10226293)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 非線形同期 / 可視光通信 / マイクロプロセッサ / 神経振動子 |
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| Outline of Final Research Achievements |
We study nonlinear synchronization method by visible light communication in the deep sea. This model is RC circuit and switch. If the characteristics of the electronic circuit due to water pressure change. It will be considered that nonlinear synchronization occurs in the circuit.
Also, we created a microcomputer firefly that can be synchronized with visible light.The system consists of a microprocessor, blue / green LED and photodiode. Blue light performs nonlinear synchronization and becomes a clock for communication. Green light is data of 4 PPM signals. We changed the time constant of the circuit characteristics and investigated the range where synchronization occurs and the range that can communicate. The nonlinear synchronization make possible over a wide range, the synchronization and the communication.
By introducing ATC, communication at a maximum distance of 600 mm became possible.
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| Free Research Field |
船舶海洋工学, ロボット工学
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