公开(公告)号：US20170107098A1

公开(公告)日：2017-04-20

申请号：US15273423

申请日：2016-09-22

Applicant: THALES

Inventor： Fabien FILHOL ,  Pierre-Olivier LEFORT ,  Bertrand LEVERRIER ,  Régis QUER ,  Bernard CHAUMET

IPC: B81B7/00 ,  B81C1/00

CPC classification number: B81B7/0016 ,  B81B7/0048 ,  B81B7/0051 ,  B81B2203/0307 ,  B81C1/00269 ,  B81C3/001 ,  B81C2201/019 ,  H01L23/10

Abstract: A microelectromechanical system comprising an assembly of layers stacked in a stacking direction comprises an active layer made of single-crystal silicon comprising an active structure, and first and second covers defining a cavity around the active structure, the active layer interposed between the first and second covers, the second cover comprising a single layer made of single-crystal silicon. The assembly comprises a decoupling layer made of single-crystal silicon and comprising: an attaching element fastened to a carrier, a frame encircling the attaching element in the plane of the decoupling layer, and a mechanical decoupling structure connecting the frame and the attaching structure, the mechanical decoupling structure allowing the attaching element to be flexibly joined to the frame. The frame is secured to the silicon layer of the second cover and at most one film of silicon dioxide is interposed between the frame and silicon layer of the second cover.

公开(公告)号：US20240219419A1

公开(公告)日：2024-07-04

申请号：US18531482

申请日：2023-12-06

Applicant: THALES

Inventor： Régis QUER ,  Olivier LEFORT ,  Jean-René CHEVALIER ,  Sébastien JAUD

IPC: G01P15/18 ,  G01P15/08

CPC classification number: G01P15/18 ,  G01P15/08 ,  G01P2015/0811

Abstract: An acceleration-measuring sensor assembly includes an accelerometer subassembly with three measurement axes, mounted in a housing equipped with securing elements, and configured to determine an acceleration along a principal axis A, the assembly comprising: a single-axis principal accelerometer with a seismic mass moving in a straight line along a principal axis A, measuring acceleration along the principal axis A which is misaligned with respect to a reference axis Y by at most 50 mrad, a secondary accelerometer having at least two measurement axes and measuring respectively along two axes X and Z which with the reference axis Y form a direct orthonormal trihedron (O, X, Y, Z), the measurement precision of the two-axis accelerometer along each of its axes being at least ten times inferior to the measurement precision of the single-axis accelerometer, and an electronic processing unit configured to calculate a compensated acceleration S.