公开(公告)号：US20250044169A1

公开(公告)日：2025-02-06

申请号：US18678728

申请日：2024-05-30

Applicant: TONGJI UNIVERSITY

Inventor： Hailong YIN ,  Yiyang HU ,  Zuxin XU

IPC: G01K15/00 ,  G01K11/3206

Abstract: A sensitivity testing device and method calibrates the distributed optic-fiber temperature sensing (DOFTS) system for inflow and infiltration (I/I) identification in drainage pipeline. A temperature-adjustable water supply tank is provided with a heating rod and a high-accuracy physical water temperature sensor and is electrically connected with a centralized programmable logic controller (PLC) system; the temperature-adjustable water supply tank is connected with a water inlet of a water pump through a first connecting pipe; a water outlet of the water pump is communicated with a water inlet of an experimental pipeline through a second connecting pipe; and a water outlet of the experimental pipeline is communicated with the temperature-adjustable water supply tank through a third connecting pipe.

公开(公告)号：US12196633B2

公开(公告)日：2025-01-14

申请号：US17915978

申请日：2021-03-30

Applicant: AIRBUS OPERATIONS LIMITED

Inventor： Kayvon Barad ,  Christopher Wood ,  Andrew Ramshaw

IPC: G01L1/24 ,  G01K11/3206 ,  G01L5/00 ,  G01K13/08

Abstract: An assembly having a bearing with an axis of rotation, and a fibre-based sensor for sensing strain or temperature of the bearing is disclosed. The sensor extends in a direction parallel to the axis of rotation. An aircraft system is disclosed including a wheel supported on an axle by a first bearing and a second bearing. The system further includes 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：US12158394B2

公开(公告)日：2024-12-03

申请号：US17980701

申请日：2022-11-04

Applicant: Rohr, Inc.

Inventor： Nitin Kumar Goyal ,  Robin Jacob

IPC: G01M3/04 ,  G01K11/3206 ,  G01K13/00 ,  G01L1/24 ,  H04B10/40

Abstract: An assembly is provided for an aircraft. This aircraft assembly includes a fuselage and a second system. The fuselage includes a wall and a hatch configured to close an opening in the wall. The sensor system includes an optical fiber, a transmitter and a receiver. The optical fiber is arranged at an interface between the hatch and the wall. The transmitter is configured to transmit first electromagnetic radiation into the optical fiber. The receiver is configured to detect second electromagnetic radiation received from the optical fiber to provide receiver data. The sensor system is configured to detect fluid leakage across the interface between the hatch and the wall based on the receiver data.

公开(公告)号：US11993535B2

公开(公告)日：2024-05-28

申请号：US17137484

申请日：2020-12-30

Applicant: LEONI Kabel GmbH

Inventor： Claudia Maier ,  Hakan Sayinç

IPC: G01K11/32 ,  C03C13/04 ,  C03C25/105 ,  C09K11/02 ,  C09K11/88 ,  G01K11/3206 ,  B82Y15/00 ,  B82Y20/00 ,  B82Y40/00

CPC classification number: C03C13/046 ,  C03C25/105 ,  C09K11/02 ,  C09K11/883 ,  G01K11/3206 ,  B82Y15/00 ,  B82Y20/00 ,  B82Y40/00 ,  G01K11/32

Abstract: The invention relates to a method and device for fiber optic temperature measurement. The invention also relates to a multimode quartz glass fiber with nanocomposite (NK) containing a polymer and quantum dots (QDs) and its manufacture. These are based on temperature-dependent emission of quantum dots on the surface of optical fibers.

公开(公告)号：US20240110835A1

公开(公告)日：2024-04-04

申请号：US18374851

申请日：2023-09-29

Applicant: UCHICAGO ARGONNE, LLC

Inventor： Sumit Bhattacharya ,  Cari A. Launiere ,  Abdellatif M. Yacout

IPC: G01K7/02 ,  C23C14/06 ,  C23C14/14 ,  C23C14/22 ,  G01K7/36 ,  G01K11/22 ,  G01K11/3206

CPC classification number: G01K7/02 ,  C23C14/067 ,  C23C14/14 ,  C23C14/22 ,  G01K7/36 ,  G01K11/22 ,  G01K11/3206

Abstract: A corrosion resistant coating suitable for use in harsh environments, such as for protecting a temperature probe for continuous use in the Hall-Héroult process can include at least one first layer comprising a metal boride and at least one second layer comprising a metal interposed between the substrate and the at least one metal boride layer. The coating can have a thickness of less than 10 micrometers.

公开(公告)号：US11906334B2

公开(公告)日：2024-02-20

申请号：US17275490

申请日：2019-09-06

Applicant: OptaSense Holdings Limited

Inventor： Alastair Godfrey ,  Robert Ellwood

IPC: G01D5/353 ,  G01K11/3206 ,  G01L1/24 ,  G01L11/02 ,  G01R33/032

CPC classification number: G01D5/35377 ,  G01K11/3206 ,  G01L1/243 ,  G01L11/025 ,  G01R33/0327

Abstract: A fibre optic cable structure (300) suitable for fibre optic sensing with an improved sensitivity to an environmental parameter is described. The structure (300) includes an optical fibre (301) and a bend inducer (304) responsive to the environmental parameter to control bending of the optical fibre. The bend inducer (304) is configured to adopt a first configuration, that induces a first curvature of the optical fibre, at a first value of the environmental parameter and to adopt a second configuration at a second, different, value of the environmental parameter that induces a second, different, curvature of the optical fibre. By action of the bend inducer (304) a change in value of the environmental parameter imparts a bending force on the optical fibre.

公开(公告)号：US11811099B2

公开(公告)日：2023-11-07

申请号：US17403726

申请日：2021-08-16

Applicant: Aleksandra Fortier

Inventor： Aleksandra Fortier

IPC: H01M50/569 ,  H01M10/48 ,  G01R31/3835 ,  G01R31/382 ,  G01R31/392 ,  G01R31/389 ,  G01K11/3206 ,  G01K11/32 ,  H01M10/42

CPC classification number: H01M50/569 ,  H01M10/48 ,  H01M10/486 ,  G01R31/3835 ,  G01R31/392 ,  H01M2010/4278

Abstract: The disclosed principles provide techniques for 3D fabrication of sensing systems embedded inside battery cells and provide cell parameter data for a comprehensive and robust battery management system. The disclosed principles provide online and real-time monitoring battery state-of-health down to the individual cell level of each battery using embedded sensors on one or more of the internal layers of a cell, such as the dielectric separators found in such battery cells. The implementation of the disclosed principles in individual battery cells therefore provides an increased likelihood to mitigate catastrophic failures in batteries. In addition, the disclosed fabrication processes for printing sensors directly on one or more of the components or layers within each individual battery cell significantly reduce manufacturing steps required by conventional battery management systems. The disclosed principles also provided for a unique silica-based ink for use in the 3D printing of such embedded cell sensing components.

公开(公告)号：US11781923B1

公开(公告)日：2023-10-10

申请号：US18326845

申请日：2023-05-31

Applicant: Xinjiang Technical Institute of Physics and Chemistry, CAS

Inventor： Linjun Li ,  Yuqiang Yang ,  Shilie Pan ,  Yu Zhou ,  Xiaoming Duan ,  Yingjie Shen ,  Qianqian Hao ,  Xin He

IPC: G01K11/3206

CPC classification number: G01K11/3206

Abstract: A fiber optic sensing head includes a single-mode optical fiber, a twin hole optical fiber including a cladding region and a core region surrounded by the cladding region, and the core region includes a second core located at an axis center, as well as a first and second round holes symmetrically distributed with respect to the second core; an incoming end of a gradient refractive-index fiber is connected to an outgoing end of the twin hole optical fiber with the incoming end of the gradient index fiber aligned with the outgoing end of the single-mode optical fiber at center. A thermal-sensitive structure is filled in a preset length part of the second round hole extending along an axial direction of the twin hole optical fiber. An incoming end of the twin hole optical fiber is connected to an outgoing end of the gradient index optical fiber with displacement.

公开(公告)号：US11714010B2

公开(公告)日：2023-08-01

申请号：US17144984

申请日：2021-01-08

Applicant: Shanghai Huayi New Material Co., Ltd. ,  Shanghai University

Inventor： Yunqi Liu ,  Xiaolong Si ,  Linfang Wu ,  Chengbo Mou ,  Yan Zhuang

IPC: G01K11/3206 ,  G01K13/00 ,  G02B6/02

CPC classification number: G01K11/3206 ,  G01K13/00 ,  G02B6/02123

Abstract: A reactor temperature measurement system includes a Fiber Bragg Grating sensor array arranged in a body of the reactor for monitoring temperatures at multiple positions in an axial direction of the body to obtain temperature sensing optical signals; and a fiber grating demodulator, connected to the Fiber Bragg Grating sensor array, and used to demodulate the temperature sensing optical signals. A method for preparing a Fiber Bragg Grating includes preparing a Fiber Bragg Grating by using a single-mode fiber and annealing the Fiber Bragg Grating, which includes heating the Fiber Bragg Grating to a temperature above 400° C. and maintaining for 100 to 200 hours.

公开(公告)号：US20230236072A1

公开(公告)日：2023-07-27

申请号：US18010554

申请日：2021-04-20

Applicant: DYNEX SEMICONDUCTOR LIMITED ,  ZHUZHOU CRRC TIMES SEMICONDUCTOR CO. LTD

Inventor： Yangang Wang ,  Bruno Cerqueira Rente Ribeiro ,  Paul Durnford Taylor ,  Robin Adam Simpson ,  Callum Tarr ,  Michael David Nicholson ,  Daniel Bell ,  Tong Sun ,  Kenneth Grattan ,  Matthias Fabian

IPC: G01K11/3206 ,  G01K1/143 ,  G01K1/18

CPC classification number: G01K11/3206 ,  G01K1/143 ,  G01K1/18

Abstract: There is provided a semiconductor device 100, comprising: at least one semiconductor chip 5, and a structure 2 thermally coupled to the at least one semiconductor chip 5, wherein the structure 2 comprises a surface located within an interior of the semiconductor device, and the surface comprises a groove 12; and a sensor 16 comprising an optical fibre 13 passing through the groove 12, wherein the sensor 16 is configured to sense a temperature of the at least one semiconductor chip 5.