Patent ID: 6426795
Filing Date: 2002-07-30
Classification: G01C

Abstract:
A device for acquiring mechanical variables, including at least one of angles of rotation, speeds, angular velocities and angular accelerations, by evaluating the superposition of at least two oscillations, physically decoupled in pairs, of an optical variable inertial to the examined rotation, comprises:at least one fiberglass ring having an elliptical cross section, at least one coupler associated with the at least one fiberglass ring, at least one laser/maser connected to the at least one coupler, at least one decoupler associated with the at least one fiberglass ring, and a measuring location connected to the at least one decoupler, wherein the oscillations propagate along at least two closed propagation paths formed by the at least one fiberglass ring, wherein the oscillations rotate in opposite directions from each other, wherein the elliptical cross section of the at least one fiberglass ring permits use of mutually orthogonal polarizations for the oscillations of the optical variable, and wherein the at least one decoupler decouples the oscillations propagating along the at least two propagation paths, the decoupled oscillations only becoming superposable outside the propagation paths at the measuring location where an evaluation signal obtained from superposing the oscillations is detected.