JP2023008854A - 2つのシーソーを有する加速度計 - Google Patents
2つのシーソーを有する加速度計 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/125—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by capacitive pick-up
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P2015/0805—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration
- G01P2015/0822—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass
- G01P2015/0825—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass for one single degree of freedom of movement of the mass
- G01P2015/0831—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass for one single degree of freedom of movement of the mass the mass being of the paddle type having the pivot axis between the longitudinal ends of the mass, e.g. see-saw configuration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P2015/0805—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration
- G01P2015/0857—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration using a particular shape of the suspension spring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P2015/0805—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration
- G01P2015/0857—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration using a particular shape of the suspension spring
- G01P2015/086—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration using a particular shape of the suspension spring using a torsional suspension spring
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Abstract
Description
Claims (15)
- xy平面に垂直なz軸の方向の加速度を測定するための加速度計であって、第1の試験質量及び第2の試験質量を備え、前記第1の試験質量は前記第2の試験質量に隣接し、前記加速度計は、前記第1の試験質量と前記第2の試験質量との間に実質的に位置する1つ以上の中央アンカー点をさらに備え、前記加速度計が、第1の側部アンカー点及び第2の側部アンカー点をさらに備え、
前記第1の試験質量が、第1の懸架構造によって前記第1の側部アンカー点及び前記1つ以上の中央アンカー点から懸架され、前記第1の懸架構造が、前記第1の試験質量が第1の回転軸を中心とした回転を受けることを可能にし、
前記第2の試験質量が、第2の懸架構造によって前記1つ以上の中央アンカー点及び前記第2の側部アンカー点から懸架され、前記第2の懸架構造が、前記第2の試験質量が第2の回転軸を中心とした回転を受けることを可能にし、前記第1の回転軸及び前記第2の回転軸が互いに平行であり、前記第1の回転軸及び前記第2の回転軸に平行なx方向、及び、前記x方向に垂直なy方向を画定し、
前記第2の側部アンカー点のx座標が、前記第1の側部アンカー点のx座標よりも大きく、前記第1の試験質量の質量中心のy座標が、前記第1の回転軸のy座標よりも大きく、前記第2の試験質量の質量中心のy座標が、前記第2の回転軸のy座標よりも小さく、
前記第1の懸架構造が、前記第1の側部アンカー点と前記第1の試験質量との間に取り付けられた第1のねじれ要素を備え、前記第1の懸架構造がまた、前記1つ以上の中央アンカー点のうちの1つと前記第1の試験質量との間に取り付けられた第2のねじれ要素を備え、
前記第2の懸架構造が、前記1つ以上の中央アンカー点のうちの1つと前記第2の試験質量との間に取り付けられた第3のねじれ要素を備え、前記第2の懸架構造がまた、前記第2の側部アンカー点と前記第2の試験質量との間に取り付けられた第4のねじれ要素を備え、
前記第1のねじれ要素の中心のx座標が、前記第1の側部アンカー点のx座標よりも小さく、前記第4のねじれ要素の中心のx座標が、前記第2の側部アンカー点のx座標よりも大きいことを特徴とする、加速度計。 - 前記第1の懸架構造がまた、前記第1の側部アンカー点から前記第1のねじれ要素まで延在する実質的に剛性の第1の延長バーを備え、前記第2の懸架構造が、前記第2の側部アンカー点から前記第4のねじれ要素まで延在する実質的に剛性の第2の延長バーを備えることを特徴とする、請求項1に記載の加速度計。
- 前記第3のねじれ要素の中心のx座標が、前記第2のねじれ要素の中心のx座標よりも小さいことを特徴とする、請求項1に記載の加速度計。
- 前記第3のねじれ要素の中心のx座標が、前記第2のねじれ要素の中心のx座標よりも大きいことを特徴とする、請求項1に記載の加速度計。
- 前記1つ以上の中央アンカー点が1つの中央アンカー点を含み、前記1つの中央アンカー点のx座標が、前記第2のねじれ要素の中心のx座標と前記第3のねじれ要素の中心のx座標との間にあることを特徴とする、請求項3又は4に記載の加速度計。
- 前記第1の回転軸及び前記第2の回転軸が一致することを特徴とする、請求項3又は4に記載の加速度計。
- 前記第1の側部アンカー点、前記第2の側部アンカー点、及び前記1つの中央アンカー点がすべて、前記第1の回転軸及び前記第2の回転軸上にあることを特徴とする、請求項6に記載の加速度計。
- 前記1つ以上の中央アンカー点が、第1の中央アンカー点及び第2の中央アンカー点を含み、前記第2のねじれ要素が、前記第1の中央アンカー点と前記第1の試験質量との間に取り付けられ、前記第3のねじれ要素が、前記第2の中央アンカー点と前記第2の試験質量との間に取り付けられることを特徴とする、請求項3又は4に記載の加速度計。
- 前記第1の回転軸及び前記第2の回転軸が一致することを特徴とする、請求項8に記載の加速度計。
- 前記第1の側部アンカー点、前記第2の側部アンカー点、前記第1の中央アンカー点及び前記第2の中央アンカー点がすべて、前記第1の回転軸及び前記第2の回転軸上にあることを特徴とする、請求項9に記載の加速度計。
- 前記第1の回転軸のy座標が前記第2の回転軸のy座標よりも大きいことを特徴とする、請求項8に記載の加速度計。
- 前記第1の回転軸のy座標が前記第2の回転軸のy座標よりも小さいことを特徴とする、請求項8に記載の加速度計。
- 前記第1の側部アンカー点が前記第1の回転軸上にあり、前記第2の側部アンカー点が前記第2の回転軸上にあり、前記第1の中央アンカー点及び前記第2の中央アンカー点のy座標が、前記第1の回転軸のy座標と前記第2の回転軸のy座標との間にあることを特徴とする、請求項8に記載の加速度計。
- 前記加速度計が、x軸及び/又はy軸の方向の加速度を測定するための第1の要素及び第2の要素をさらに備え、前記第1の要素が前記第1の試験質量の第1の開口内に配置され、前記第2の要素が前記第2の試験質量の第1の開口内に配置されることを特徴とする、請求項1に記載の加速度計。
- 前記加速度計が、前記x軸及び/又は前記y軸の方向の加速度を測定するための第3の要素及び第4の要素をさらに備え、前記第3の要素が前記第1の試験質量の第2の開口内に配置され、前記第4の要素が前記第2の試験質量の第2の開口内に配置されることを特徴とする、請求項14に記載の加速度計。
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US20100024554A1 (en) * | 2008-07-30 | 2010-02-04 | Johannes Classen | Triaxial acceleration sensor |
JP2015509189A (ja) * | 2012-01-12 | 2015-03-26 | ムラタ エレクトロニクス オサケユキチュア | 耐振動性の加速度センサー構造体 |
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JP5716149B2 (ja) | 2009-11-24 | 2015-05-13 | パナソニックIpマネジメント株式会社 | 加速度センサ |
US8539836B2 (en) | 2011-01-24 | 2013-09-24 | Freescale Semiconductor, Inc. | MEMS sensor with dual proof masses |
WO2014151370A1 (en) * | 2013-03-15 | 2014-09-25 | Invensense, Inc. | Magnetometer using magnetic materials on accelerometer |
US20190049482A1 (en) * | 2017-08-10 | 2019-02-14 | Analog Devices, Inc. | Differential z-axis resonant mems accelerometers and related methods |
US10732196B2 (en) | 2017-11-30 | 2020-08-04 | Invensense, Inc. | Asymmetric out-of-plane accelerometer |
WO2019209659A1 (en) | 2018-04-26 | 2019-10-31 | Invensense, Inc. | Deformation rejection mechanism for offset minimization of out-of-plane sensing mems device |
US10794701B2 (en) * | 2018-05-01 | 2020-10-06 | Nxp Usa, Inc. | Inertial sensor with single proof mass and multiple sense axis capability |
EP3598146B1 (en) * | 2018-07-16 | 2022-05-11 | Murata Manufacturing Co., Ltd. | Microelectromechanical device for out-of-plane motion detection |
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US20100024554A1 (en) * | 2008-07-30 | 2010-02-04 | Johannes Classen | Triaxial acceleration sensor |
JP2015509189A (ja) * | 2012-01-12 | 2015-03-26 | ムラタ エレクトロニクス オサケユキチュア | 耐振動性の加速度センサー構造体 |
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US20230003760A1 (en) | 2023-01-05 |
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JP7380761B2 (ja) | 2023-11-15 |
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