公开(公告)号：US20150077736A1

公开(公告)日：2015-03-19

申请号：US14383507

申请日：2013-03-19

Applicant: UNIVERSITY OF LIMERICK

Inventor： Thomas Reinsch ,  Kort Bremer ,  Elfed Lewis ,  Gabriel Leen ,  Steffen Lochmann

IPC: G01N21/55 ,  G01N21/41 ,  G01N21/29 ,  G01L1/24 ,  G01K11/32

CPC classification number: G01N21/55 ,  G01D5/35312 ,  G01D5/35316 ,  G01K11/3206 ,  G01L1/246 ,  G01N21/29 ,  G01N21/4133 ,  G01N21/7703 ,  G01N2021/7763 ,  G01N2021/7776 ,  G01N2021/7786 ,  G01N2201/088

Abstract: A sensor (1) has a light conductor (2) having a grating (FBG), a cavity (5), and a transparent cavity end wall (4), a light emitter for directing light through the conductor, and a light detector for detecting reflected light, and a processor. The processor is adapted to analyse light reflected due to the grating (FBG, 6) to determine an indication of temperature, light reflected from the end (7) of the cavity (5) to determine an indication of pressure, and also light reflected from the outer surface (8) of the cavity wall (4) to determine an indication of refractive index of a medium outside said cavity wall. The processor may use one output to compensate another, for example pressure and temperature may be used to compensate for variation in refractive index.

Abstract translation: 传感器（1）具有光导体（2），其具有光栅（FBG），空腔（5）和透明腔端壁（4），用于引导光通过导体的光发射器，以及光检测器 检测反射光和处理器。 处理器适于分析由光栅（FBG，6）反射的光，以确定温度的指示，从腔（5）的端部（7）反射的光，以确定压力的指示，以及从 空腔壁（4）的外表面（8）以确定在所述腔壁外部的介质的折射率的指示。 处理器可以使用一个输出来补偿另一个输出，例如压力和温度可用于补偿折射率的变化。