Liquid-Level Sensing Utilizing Evanescent Waves Created inPiezoelectric Vibrators Operating in Trapped-Energy Modes
| Project/Area Number |
22560340
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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 |
Electron device/Electronic equipment
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| Research Institution | Tohoku Gakuin University |
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Principal Investigator |
YAMADA Ken 東北学院大学, 工学部電子工学科, 教授 (80134021)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 超音波センサ / エバネセント波 / エネルギー閉じ込め振動子 / 液面レベル計測 / 波動利用工学 / センシング / エネルギー閉じ込め / 圧電振動子 / 水位計測 / 等価回路解析 / 計測工学 / 先端機能デバイス / 電子デバイス・機器 / 厚みたて振動 / 厚みすべり振動 |
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| Research Abstract |
The measurement of liquid level on the millimeter scale or less has become an important subject in biological and chemical fields. As an alternative to the well -known pulse-echo method, we have presented a new technique that employs a piezoelectric thickness vibrator operating in a trapped-energy mode for detecting a small-scale variation in liquid level. The variation in the electric conductance G with the liquid level has been observed by experiments and also by theoretical analysis using an equivalent-network model, and the feasibility of the sensing device is confirmed.
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Report
(4 results)
Research Products
(38 results)
