公开(公告)号：US20180136058A1

公开(公告)日：2018-05-17

申请号：US15572606

申请日：2015-05-08

Applicant: Fugro Technology B.V.

Inventor： Johannes Maria SINGER ,  Devrez Mehmet KARABACAK ,  Bill HEFFERNAN

IPC: G01L1/24 ,  G01B11/16 ,  G01D5/353 ,  G01L3/12 ,  G01L3/14 ,  G01L5/13 ,  G01L5/16 ,  G01M11/08

CPC classification number: G01L1/246 ,  G01B11/18 ,  G01D5/35316 ,  G01L3/12 ,  G01L3/14 ,  G01L5/12 ,  G01L5/133 ,  G01L5/166 ,  G01M5/0025 ,  G01M5/0091 ,  G01M11/085

Abstract: A sensor system (10) and method for monitoring a powertrain (20) having a drive shaft (1). The sensor system (10) comprises an optical fibre (2) with a strain sensitive element (3). According to one aspect, a connection structure (4) is configured to hold at least a part of the optical fibre (2) with the strain sensitive element (3) at a radial distance (R2-R1) remote from the drive shaft (1) for amplifying the strain (S2) on the strain sensitive element (3) with respect to the strain (51) on the drive shaft (1). According to a further aspect, at least three respective lengths of one or more optical fibres follow parallel, e.g. helical, paths with respect to each other to distinguish different strain forces.