Patent ID: 8371166
Filing Date: 2013-02-12
Classification: G01C,G01P

Abstract:
1. A MEMS surface sensor, comprising: a substrate, a surface of which defines a substrate plane; a first zone having a first thickness, of which two surfaces form a first plane and a second plane parallel in relation to one another and to the substrate plane, first zone forming at least one mobile mass that moves in a direction out of the substrate plane; a second zone, linked to a fixed zone of the substrate, the second zone forming at least a pivot link of the mobile mass in relation to said substrate, and having a thickness less or equal to that of the mobile mass and being linked to the mobile mass, an axis of the pivot link being between the first plane and the second plane, and parallel to the first plane and the second plane, the mobile mass moving in the direction out of the substrate plane about the axis of the pivot link, the second zone having, along a direction perpendicular to the substrate plane, a lower part and an upper part, at least one of the upper part of the second zone and the lower part of the second zone being in the first plane or in the second plane common to the first and second zones; a third zone of a lesser thickness than that of the second zone, forming at least a suspended strain gauge that detects movement of the mobile mass around the axis of the pivot link in the direction out of the substrate plane, the third zone having, along a direction perpendicular to the substrate plane, a lower part and an upper part, one of the upper part of the third zone or the lower part of the third zone being in a plane common with the first zone or with the second zone, and the third zone