公开(公告)号：EP3425360A1

公开(公告)日：2019-01-09

申请号：EP18181888.1

申请日：2018-07-05

Applicant: STMicroelectronics S.r.l.

Inventor： PAPPALARDO, Francesco ,  PENNISI, Agatino ,  GUIDETTI, Elio ,  DORIANI, Angelo

IPC: G01L1/14 ,  G01M5/00

Abstract: A capacitive sensor (1), for monitoring stresses acting in a construction structure when introduced into the construction structure, has a multi-layer structure provided with an upper conductive layer (2a), defining an upper outer surface of the sensor; a lower conductive layer (2b), defining a lower outer surface of the sensor; at least a first layer (5a) of insulating material, in contact with the upper conductive layer; at least a second layer (5b) of insulating material, in contact with the lower conductive layer; at least a first plate layer (4a), of conductive material; at least a second plate layer (4b), of conductive material; at least one dielectric layer (6), interposed between the first plate layer and the second plate layer to define at least one detection capacitor (C) inside the multi-layer structure of the sensor; wherein the upper and lower conductive layers are designed to jointly define an electromagnetic screen for screening the detection capacitor against electromagnetic interference originating from outside the capacitive sensor.