Patent ID: 9452921
Filing Date: 2016-09-27
CPC Classification: B81B,G01C

Claim Text:
1. A microelectromechanical gyroscope structure, comprising: a first seismic mass including a planar surface; a second seismic mass including a planar surface; a first spring structure for suspending the first seismic mass and the second seismic mass on another body element in a parallel position, wherein the planar surface of the first seismic mass and the planar surface of the second seismic mass form a reference plane of masses; excitation means; detection means; wherein the first spring structure includes a first anchor point within the plane of the first seismic mass for attaching the first seismic mass to the other body element, and a first spring assembly attached to the first anchor point and the first seismic mass, which first spring assembly enables rotary oscillation of the first seismic mass about a first excitation axis that is parallel to the plane of masses; the first spring structure includes a second anchor point within the plane of the second seismic mass for attaching the second seismic mass to the other body element, and a second spring assembly attached to the second anchor point and the second seismic mass, which second spring assembly enables rotary oscillation of the second seismic mass about a second excitation axis that is parallel to the plane of masses; the first excitation axis and the second excitation axis are aligned to a common primary axis; the first spring assembly enables rotary oscillation of the first seismic mass about a first detection axis that is perpendicular to the plane of masses; the second spring assembly enables rotary oscillation of the second seismic mass about a second detection axis that is perpendicular to the plane of masses; the first detection axis and the second detection axis are separated by a non-zero distance; the excitation means are configured to drive the first seismic mass and the second seismic mass to oscillate about the common primary axis; the detection means include at least one detector element with an in-plane detection comb and a second spring structure for transforming the rotary oscillation of the first seismic mass or of the second seismic mass into linear oscillation of the in-plane detection comb in the plane of masses in a direction parallel to the common primary axis; the detection means are configured to detect the linear oscillation of the in-plane detection comb.