MEMSグラビメーターによる地球潮の測定
R P Middlemiss1,2, A Samarelli1, D J Paul2
1Scottish Universities Physics Alliance (SUPA), University of Glasgow, School of Physics and Astronomy, Kelvin Building, University Avenue, Glasgow G12 8QQ, UK.
Nature
|April 1, 2016
まとめ
小型で手頃な価格で 地球の潮を測定できる 新型マイクロ電気機械系 (MEMS) グラビメーターを開発しました この突破はMEMS加速計を 様々な地質学的用途の 敏感な重力計に変えました
科学分野:
- 地理学
- センサー技術
- マイクロ電機システム (MEMS)
背景:
- 重力加速度の変化の正確な測定は,炭化水素の貯蔵量,火山活動の監視,地下構造の特定に不可欠です.
- 既存のグラビメーター (自由落下,スプリングベースの,超伝導,原子干渉計) は,必要な感度 (マイクロガール/Hz ^ ^ 1/2) を達成しますが,高価 (> 100,000 ドル) と重量 (> 8 kg) です.
- 予測可能な重力信号で 高い感度と長期の安定性を要求します
研究 の 目的:
- グラビメーターとして機能する新しいマイクロ電気機械システム (MEMS) 装置を紹介します
- 地球の潮流を測定する 装置の能力を示し 安定性を示します
- 低コストで小型化されたグラビメーターが 広範囲に応用できる可能性を 強調するためです
主な方法:
- マイクロ電機システム (MEMS) 装置の開発 感度 40 マイクロガル/Hz^{1/2).
- 地球の潮を長期にわたって測定する MEMS 装置を使用する.
- 開発されたMEMS重力計の長期安定性を既存のMEMS加速度計と比較する.
主要な成果:
- 開発されたMEMS装置は,40マイクロガール/Hz ^ 1 / 2の感度を達成し,数立方センチメートルで動作します.
- この装置は地球の潮を測定し,他のMEMS装置と比較して長期的に優れた安定性を示した.
- この研究では,MEMS加速計を機能的な重力計に成功裏に変換しました.
結論:
- 新しいMEMS重力計は,従来型の計測器と比較して,コストとサイズが大幅に削減され,高い感度と安定性を提供します.
- この小型で手頃な価格の技術は 重力の地図作成と探査に 新たな道を開きます
- 潜在的応用には,ドローンベースの土地測量,火山監視,マルチピクセル重力画像配列が含まれています.
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