Rotating motion sensor
AssigneeEpcos AG
InventorsWerner Ruile, Anton Leidl
Life of this patent
Estimating the term…
Abstract
A rotating motion sensor includes at least one electroacoustic resonator to stimulate a surface acoustic wave. The at least one electroacoustic resonator is configured so that rotation of the at least one electroacoustic resonator about an axis of rotation causes a change in resonance frequency of the at least one electroacoustic resonator. The at least one electroacoustic resonator includes oscillating structures configured to oscillate in a first direction that is a direction of propagation of the surface acoustic wave and/or a second direction that is transverse to the direction of propagation of the surface acoustic wave.
Claims20
A rotating motion sensor comprising:
- at least one electroacoustic resonator to stimulate a surface acoustic wave;
- wherein the at least one electroacoustic resonator is configured so that rotation of the at least one electroacoustic resonator about an axis of rotation causes a change in resonance frequency of the at least one electroacoustic resonator.
A rotating motion sensor comprising:
- at least one electroacoustic resonator to stimulate a surface acoustic wave, the at least one electroacoustic resonator comprising:
- oscillating structures configured to oscillate in a first direction that is a direction of propagation of the surface acoustic wave and/or a second direction that is transverse to the direction of propagation of the surface acoustic wave;
- wherein the at least one electroacoustic resonator is configured so that rotation affects operation of the at least one electroacoustic resonator;
- wherein at least two of the oscillating structures have different geometries;
- wherein at least two of the oscillating structures comprise different layer structures;
- and
- wherein the at least one electroacoustic resonator comprises different regions, the different regions comprising different densities of oscillating structures.
Dependencies are inferred from the claim text.