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US 2021/0278432 A1Published application
High precision rotation sensor and method
AssigneeQuartz Seismic Sensors, Inc.
InventorsJerome M. Paros, Krishna Venkateswara
Life of this patent
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Abstract
A high precision rotation sensor comprises an inertial mass suspended from a base wherein the mass is responsive to rotational inputs that apply loads to load-sensitive resonators whose changes in resonant frequency are related to the applied loads.
Claims26
A rotation sensor, comprising:
- a base frame;
- a pendulous inertial mass;
- a pivot connecting the pendulous inertial mass to the base frame;
- a load-transmitting structure connected to the pendulous inertial mass;
- and
- at least one load-sensitive resonator having a first end portion connected to the base frame and a second end portion connected to the load-transmitting structure that allows rotation-induced loads to be applied to the load-sensitive resonator.
3 more elements
A rotation sensor, comprising:
- a base frame;
- a pendulous inertial mass;
- a pivot connecting the pendulous inertial mass to the base frame;
- a load-transmitting structure connected to the base frame;
- and
- at least one load-sensitive resonator having a first end portion connected to the inertial mass and a second end portion connected to the load-transmitting structure that allows rotation-induced loads to be applied to the load-sensitive resonator.
3 more elements
A rotation sensor, comprising:
- a base frame;
- a pendulous inertial mass;
- a bending beam connecting the pendulous inertial mass to the base frame;
- and
- at least one load-sensitive resonator mounted on a first side of the bending beam such that rotation-induced loads are applied to the load-sensitive resonator.
2 more elements
A rotation sensor, comprising:
- a base frame;
- a pendulous inertial mass;
- a crossed beams flexing pivot connecting the pendulous inertial mass to the base frame;
- and
- at least one load-sensitive resonator mounted on a first side of the crossed beams flexing pivot such that rotation-induced loads are applied to the load-sensitive resonators.
2 more elements
A rotation and horizontal acceleration sensor, comprising:
- a base frame;
- a pendulous inertial mass;
- a pivot connecting the pendulous inertial mass to the base frame;
- a first at least one load-sensitive resonator having a first end portion connected to the base frame and a second end portion connected to the pendulous inertial mass;
- an inverted inertial mass;
- a second pivot connecting the inverted inertial mass to the base frame;
- and
- a second at least one load-sensitive resonator having a first end portion connected to the base frame and a second end portion connected to the inverted inertial mass.
5 more elements
A rotation sensor, comprising:
- a base frame;
- a pendulous inertial mass;
- a bending beam connecting the pendulous inertial mass to the base frame;
- at least one load-sensitive resonators mounted on one side of the bending beam such that rotation-induced loads are applied to the load-sensitive resonators;
- an inverted inertial mass;
- a second bending beam connecting the inverted inertial mass to the base frame;
- and
- at least one load-sensitive resonators mounted on one side of the second bending beam such that rotation-induced loads are applied to the load-sensitive resonators.
5 more elements
A rotation sensor, comprising:
- a base frame;
- a pendulous inertial mass;
- a first crossed beams flexing pivot connecting the pendulous inertial mass to the base frame;
- a first at least one load-sensitive resonator mounted on one side of the first crossed beams flexing pivot such that rotation-induced loads are applied to the load-sensitive resonators;
- an inverted inertial mass;
- a second crossed beams flexing pivot connecting the inverted inertial mass to the base frame;
- and
- a second at least one load-sensitive resonator mounted on one side of the second crossed beams flexing pivot such that rotation-induced loads are applied to the load-sensitive resonators.
5 more elements
A rotation sensor, comprising:
- a base;
- a balanced inertial mass having its center of mass at a center of rotation;
- a pivot connecting the balanced inertial mass to the base;
- and
- at least one load-sensitive resonator having a first end portion connected to the balanced inertial mass and a second end portion connected to the base.
2 more elements
A rotation sensor, comprising:
- a base;
- a balanced inertial mass having its center of mass at a center of rotation;
- a crossed beams flexing pivot connecting the balanced inertial mass to the base;
- and
- at least one load-sensitive resonator mounted on one side of the crossed beams flexing pivot such that rotation-induced loads are applied to the load-sensitive resonators.
2 more elements
A geophysical measurement system comprising:
- geophysical sensors with load-sensitive resonators;
- electronic means to excite natural resonant frequencies of the resonators;
- a reference high-frequency clock standard;
- a high-resolution frequency counter,
- a temperature probe;
- and
- a signal processing unit.
4 more elements
Dependencies are inferred from the claim text.