| Project/Area Number |
21560440
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Measurement engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
OHYAMA Shinji 東京工業大学, 大学院・理工学研究科, 准教授 (00242272)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAYAMA Jun-ya 東京工業大学, 大学院・理工学研究科, 助教 (50323796)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | センサネットワーク / ToF計測 / バーニヤ効果 / 非同時問題 / 動的位置計測 / 時間計測分解能 / 飛行時間計測 / 距離計測法 |
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| Research Abstract |
In this study, for dynamic position measurement of sensor nodes in wireless sensor networks, novel high resolution RF Time-of-Flight(ToF) measurement principle between the sensor nodes is proposed, which applies' vernier effect' to operation clock of the nodes. While the proposed ToF measurement principle has been generalized, its validities are confirmed through several experimental conditions. In addition, advanced ToF measurement method on which non-synchronized mutual communications are operated is also proposed, which is more suitable for the wireless sensor network schemes regardless the same' vernier effect' is applied. Furthermore, asynchrony problem of ToF measurement has been discussed, and finally, prototype sensor node boards are fabricated for simultaneous acquisition of node position and physical measured quantities.
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