公开(公告)号：CN119452234A

公开(公告)日：2025-02-14

申请号：CN202380044002.8

申请日：2023-05-01

Applicant: 瑟拉克医疗解决方案股份有限公司

Inventor： 程杰 ,  何肇浚 ,  德哈纽贾亚·R·拉基雷迪 ,  陈辰

IPC: G01L1/246

Abstract: 小型化光纤布拉格光栅(FBG)询问系统可以包括光源、FBG传感器和光电检测器。FBG传感器可以被配置为从光源接收光信号、在区别光谱域上与光源的透射光谱相互作用，并且生成表示由FBG传感器感测的物理信号的变化的反射光信号。区别光谱域可以是由光源的透射光谱和FBG传感器的反射光谱中的至少一个限定的区域。区别光谱域的宽度可以至少部分地基于FBG传感器的操作范围。在区别域区域中，响应于FBG传感器的反射光谱中的偏移，反射光信号的功率可以单调地变化。光电检测器可以将反射光信号转换成电信号。另外，该系统可以包括功率管理单元，该功率管理单元被配置为降低功耗以便延长系统的寿命。

公开(公告)号：WO2023278444A1

公开(公告)日：2023-01-05

申请号：PCT/US2022/035314

申请日：2022-06-28

Applicant: CHEVRON U.S.A. INC.

Inventor： RHYNE, Lee ,  TANJU, Baha ,  JANAKIRAM SUBRAMANI, Hariprasad ,  CROWDER, Peter ,  VARGAS, Pedro ,  SALMATANIS, Nikolaos, Ioannis ,  PRABHU, Milind, L.

IPC: G01B11/16 ,  E21B47/007 ,  G01B11/165 ,  G01B11/18 ,  G01L1/246 ,  G01M5/0025

Abstract: An optical strain gauge system measures strain on the exterior surface of a pipe to identify areas of wear on the interior surface of the pipe. The optical strain gauge system comprises an optical sensing interrogator and at least one optical fiber. The optical sensing interrogator comprises a light source and a light sensor. The at least one optical fiber includes fiber Bragg gratings along the length of the optical fiber. The optical fiber is arranged on the exterior surface of the pipe with the fiber Bragg gratings forming a two- dimensional array of points at which strain measurements are obtained. The two- dimensional array of strain measurement points provides an accurate assessment of the strains on the exterior of the pipe which can be used to identify areas of wear on the interior surface of the pipe.

公开(公告)号：WO2021130487A1

公开(公告)日：2021-07-01

申请号：PCT/GB2020/053349

申请日：2020-12-22

Applicant: UNIVERSITY OF STRATHCLYDE

Inventor： NIEWCZAS, Pawel ,  FUSIEK, Grzegorz

IPC: G01R1/36 ,  G01L1/24 ,  G01R15/24 ,  G01L1/246 ,  G01R15/247

Abstract: The invention enables an optical voltage sensor, comprising a piezoelectric actuator mechanically coupled to an optical strain sensor (such as a fibre Bragg grating), to withstand lightning impulses, the effects of which would otherwise be harmful or destructive to the piezoelectric actuator and/or other sensitive components. As such, the optical voltage sensor, comprised within a photonic voltage transducer which also comprises a lightning impulse attenuator, is able to comply with relevant standards and be used for applications in power networks and exposed to the highest voltages for equipment.

公开(公告)号：WO2022031613A1

公开(公告)日：2022-02-10

申请号：PCT/US2021/044216

申请日：2021-08-02

Applicant: BARD ACCESS SYSTEMS, INC.

Inventor： MISENER, Anthony, K. ,  SOWARDS, Steffan ,  MESSERLY, Shayne ,  MCLAUGHLIN, William, Robert

IPC: A61B5/06 ,  G01L1/24 ,  A61B5/11 ,  A61B18/1492 ,  A61B2562/0266 ,  A61B5/065 ,  A61B5/318 ,  A61B5/6852 ,  G01D5/35383 ,  G01L1/243 ,  G01L1/246

Abstract: Disclosed herein is a system, apparatus and method directed to detecting damage to an optical fiber of a medical device. The optical fiber includes core fibers including a plurality of sensors configured to (i) reflect a light signal based on received incident light, and (ii) change a characteristic of the reflected light signal based on experienced strain. The system also includes a console having memory storing logic that, when executed, causes operations of providing receiving reflected light signals of different spectral widths of the broadband incident light by one or more of the plurality of sensors, processing the reflected light signals to detect fluctuations of a portion of the optical fiber, and determining a location of the portion of the optical fiber or a defect affecting a vessel in which the portion is disposed based on the detected fluctuations. The portion may be a distal tip of the optical fiber.

公开(公告)号：WO2021198301A2

公开(公告)日：2021-10-07

申请号：PCT/EP2021/058370

申请日：2021-03-30

Applicant: AIRBUS OPERATIONS LIMITED

Inventor： BARAD, Kayvon ,  WOOD, Christopher ,  RAMSHAW, Andrew

IPC: G01H9/00 ,  G01L1/24 ,  G01D5/353 ,  G01B11/16 ,  G01K11/32 ,  G01D5/48 ,  G01K11/3206 ,  G01B11/165 ,  G01D5/35316 ,  G01D5/485 ,  G01L1/243 ,  G01L1/246 ,  G01L5/0009

Abstract: Disclosed is an assembly comprising a bearing having an axis of rotation, and a fibre-based sensor for sensing strain or temperature of the bearing. The sensor extends in a direction parallel to the axis of rotation. Also disclosed is an aircraft system comprising a wheel supported on an axle by a first bearing and a second bearing. The system further comprises a first fibre optic sensor for sensing a strain or temperature of the first bearing, a second fibre optic sensor for sensing a strain or temperature of the second bearing, and an interrogator to analyse optical signals from the sensors to determine differences in the strains or temperatures of the first bearing and the second bearing.

公开(公告)号：WO2021260294A1

公开(公告)日：2021-12-30

申请号：PCT/FR2021/051077

申请日：2021-06-15

Applicant: SAFRAN

Inventor： HADJRIA, Rafik ,  D'ALMEIDA, Oscar ,  PHAN HUY, Minh Chau ,  SALHI, Nassim

IPC: G01D5/353 ,  G01K11/3206 ,  G01L1/24 ,  G01D5/35316 ,  G01L1/246

Abstract: L'invention concerne un procédé de mesure de température et de déformation d'une pièce ou structure à partir d'une seule ligne de fibre optique ayant un seul réseau de Bragg qui comporte les étapes suivantes : une interrogation (50) de la fibre optique basée sur deux fréquences d'échantillonnage; l'une étant une fréquence basse (fsl) et l'autre étant une fréquence haute (fsh), ladite fréquence basse fsl étant adaptée pour capter une dynamique lente correspondant à la variation de température, ladite fréquence haute fsh étant adaptée pour capter une dynamique rapide correspondant à la dynamique vibratoire; - Une brique algorithmique basée sur une technique de séparation aveugle de sources (SAS), comportant une analyse fréquentielle (200), une analyse multi¬ variée (300) et les Statistiques d'Ordre Supérieur (400); - un retour dans le domaine temporel par le biais d'une transformée de Fourier inverse (600).

公开(公告)号：WO2021130326A1

公开(公告)日：2021-07-01

申请号：PCT/EP2020/087787

申请日：2020-12-23

Applicant: TUBACEX INNOVACIÓN A.I.E. ,  TECNALIA RESEARCH & INNOVATION

Inventor： HERRERO, Diego ,  BRIZUELA, Marta ,  DOMÍNGUEZ, Santiago ,  BAPTISTE JORCIN, Jean ,  BIKARREGI, Aitor

IPC: G01K1/143 ,  G01K11/3206 ,  G01L1/24 ,  G01M5/00 ,  F16L9/02 ,  F16L9/12 ,  F16L11/127 ,  F16L2201/30 ,  F16L9/125 ,  G01L1/246 ,  G01M5/0025 ,  G01M5/0041 ,  G01M5/0091

Abstract: The invention refers to an assembly for monitoring at least one of the temperature and the strain of a pipe. The assembly comprises at least one optical fiber, each optical fiber comprising at least one Fiber Bragg Grating (FBG) sensor for monitoring the at least one parameter and a coupling device couplable to an inner surface of the pipe. The coupling device has a first surface that is configured to be in direct contact with the fluid and a second surface comprising at least one longitudinal channel to house the at least one optical fiber. The second surface is configured to be in direct contact with the inner surface of the pipe and to be isolated from the fluid.

公开(公告)号：WO2021262864A1

公开(公告)日：2021-12-30

申请号：PCT/US2021/038710

申请日：2021-06-23

Applicant: COMMSCOPE TECHNOLOGIES LLC

Inventor： DONG, Min

IPC: G01L1/24 ,  G01D5/353 ,  G02B6/44 ,  G02B6/28 ,  G01D5/35316 ,  G01L1/246 ,  H01H21/02

Abstract: The present disclosure relates to a passive fiber optic cabinet and a system for detecting a state of a door of a passive fiber optic cabinet. A passive fiber optic cabinet is provided, comprising: a housing; a door coupled to the housing and configured to be switchable between an open state and a closed state; a switch sensor module including a detection fiber Bragg grating (FBG) sensor and a stress applying mechanism corresponding to the detection FBG sensor, the stress applying mechanism configured to apply a stress to the detection FBG sensor, one of the detection FBG sensor and the stress applying mechanism being positioned at the door, and the other of the detection FBG sensor and the stress applying mechanism being positioned at the housing.

公开(公告)号：WO2021127233A1

公开(公告)日：2021-06-24

申请号：PCT/US2020/065691

申请日：2020-12-17

Applicant: EMPNIA INC.

Inventor： BHATTACHARYA, Manojeet

IPC: A61B6/03 ,  A61B5/055 ,  A61B5/107 ,  A61B5/11 ,  A61B5/00 ,  A61B6/00 ,  A61B34/20 ,  A61N5/10 ,  G01R33/565 ,  G01R33/567 ,  G02B6/02 ,  G02B6/293 ,  A41D13/1281 ,  A61B2017/00699 ,  A61B2034/2061 ,  A61B2562/0266 ,  A61B5/1077 ,  A61B5/113 ,  A61B5/6801 ,  A61B5/6804 ,  A61B6/037 ,  A61B6/5264 ,  A61B6/5288 ,  A61B6/541 ,  A61N2005/1059 ,  A61N5/1049 ,  G01D5/35316 ,  G01D5/35335 ,  G01D5/35367 ,  G01L1/246 ,  G01R33/56509 ,  G01R33/5673 ,  G02B6/022 ,  G02B6/02209 ,  G02B6/3608

Abstract: A garment for real time detection of body deformation during an image scan includes a front portion, made of a compression material and having a plurality of fiber Bragg gratings (FBGs). The garment includes a plurality of light emitters, each light emitter configured to pulse light waves through a corresponding FBGs and a plurality of light sensors, each light sensor attached to a corresponding FBG and configured to receive pulsed light waves. A processor obtains data through a data acquisition module configured to receive from the light sensors peak wavelengths reflected by the FBG Based on the effective shifts of the Bragg wavelengths of the FBGs aligned along the cartesian coordinate system, the processor may correct acquired image data or re-direct an external beam treatment to compensate for body deformation during an image scan.