公开(公告)号：US20180156643A1

公开(公告)日：2018-06-07

申请号：US15572646

申请日：2015-05-08

Applicant: Fugro Technology B.V.

Inventor： German Enrique KNOPPERS ,  Thomas Theodorus Nicolaas Johannes WAGEMAKERS ,  Devrez Mehmet KARABACAK ,  Rudolf Klaas VAN BEELEN ,  Bastiaan MEULBLOK

IPC: G01D5/353 ,  G01L1/24 ,  G01H9/00 ,  G01P15/093

CPC classification number: G01D5/35377 ,  G01D5/35316 ,  G01H9/004 ,  G01L1/246 ,  G01L5/0057 ,  G01P15/093 ,  G01P2015/0837 ,  G01P2015/0857

Abstract: The invention is directed at an optical sensor device, comprising a sensing element for receiving an input action, an optical fiber comprising an intrinsic fiber optic sensor, and a transmission structure arranged for exerting a sensing action on the optical fiber in response to the input action received by the sensing element, wherein the optical fiber in a first connecting part thereof is connected to a reference body and wherein the optical fiber in a second connecting part thereof is to the transmission structure for receiving the sensing action, the first connecting part and the second connecting part of the optical fiber being located on either side of the intrinsic fiber optic sensor, wherein the transmission structure comprises a bi-stable spring having a first and a second stable deflection position and a negative stiffness range around an unstable equilibrium position between the first and second stable deflection position, and wherein the optical fiber between the transmission structure and the reference body is pre-stressed such as to be tensed, said optical fiber thereby acting as a spring having a first spring constant of positive value, wherein the optical fiber thereby counteracts a spring action of the bi-stable spring such as to operate the bi-stable spring in a deflection position range within the negative stiffness range, the deflection position range not including the unstable equilibrium position of the bi-stable spring.