Shear wave methods, systems, and gyroscope
AssigneeCornell University
InventorsAmit Lal, Benyamin Davaji, Visarute Pinrod
Life of this patent
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Abstract
A rotation sensor, including: (i) a substrate having a top surface and an interior bottom surface; (ii) an electrode module positioned on the top surface of the substrate and including a first set of electrodes configured to generate a bulk acoustic wave directly into the substrate, wherein at least a portion of the bulk acoustic wave is transduced into a shear wave upon reflection on the interior bottom surface of the substrate without use of a reflector, and a second set of electrodes configured to detect the shear wave; and (iii) a controller in communication with the first set and second set of electrodes and configured to determine, based on the detected shear wave, an effect of Coriolis force on the sensor.
Claims20
A rotation sensor, comprising:
- a substrate having a top surface and an interior bottom surface;
- an electrode module positioned on the top surface of the substrate and comprising:
- a first set of electrodes configured to generate a bulk acoustic wave directly into the substrate, wherein at least a portion of the bulk acoustic wave is transduced into a shear wave upon reflection on the interior bottom surface of the substrate without use of a reflector;
- a second set of electrodes configured to detect the shear wave;
- and
- a controller in communication with the first set and second set of electrodes and configured to determine, based on the detected shear wave, an effect of Coriolis force on the sensor.
A method for detecting rotation, comprising the steps of:
- providing a rotation sensor comprising:
- (i) a substrate having a top surface and an interior bottom surface;
- and (ii) an electrode module positioned on the top surface of the substrate and comprising a first set of electrodes and a second set of electrodes;
- generating, by the first set of electrodes, a bulk acoustic wave directly into the substrate, wherein at least a portion of the bulk acoustic wave is transduced into a shear wave upon reflection on the interior bottom surface of the substrate without use of a reflector;
- detecting, by the second set of electrodes, the shear wave;
- and
- determining, based on the detected shear wave, an effect of Coriolis force on the sensor.
Dependencies are inferred from the claim text.