公开(公告)号：US20240035903A1

公开(公告)日：2024-02-01

申请号：US18341804

申请日：2023-06-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yoshiaki Moriya ,  Noriaki Imai

IPC: G01K11/3206

CPC classification number: G01K11/3206

Abstract: A wafer temperature sensor includes a first wafer, a second wafer, and a fiber bragg gratings (FBG)-type optical fiber, wherein the first wafer and the second wafer are bonded to each other, wherein at least one of a bonding surface of the first wafer and a bonding surface of the second wafer comprises a spiral groove, wherein the FBG-type optical fiber is in the spiral groove, and wherein the FBG-type optical fiber comprises a plurality of temperature measurement points in the spiral groove.

公开(公告)号：US11794909B2

公开(公告)日：2023-10-24

申请号：US17274269

申请日：2019-09-10

Applicant: INSTITUTO NACIONAL DE TECNICA AEROESPACIAL

Inventor： Malte Frovel ,  Ana Belen Fernandez-Medina Maeso ,  Julio Mora ,  Alina Aguero ,  Suthyvann Sor Mendi ,  Raquel Lopez Heredero ,  Adelaida Garcia-Magarino Garcia ,  Miguel Gonzalez Del Val

IPC: B64D15/20 ,  F03D80/40 ,  G01D5/353 ,  G01K11/3206 ,  G08B19/02 ,  H02G7/16

CPC classification number: B64D15/20 ,  F03D80/40 ,  G01D5/35316 ,  G01K11/3206 ,  G08B19/02 ,  H02G7/16

Abstract: The present invention relates, but without limitation, to a system and method for detecting the formation of ice on a surface of a body (1) on which an air stream impinges. Said system comprises: a first and a second temperature detectors (2, 5) with different thermal inertia; and an electro-optic module (10) connected to both detectors (2, 5). Thus, by calculating the different responses of the detectors (2, 5) it is possible to detect the ice formation on a body (1), and more advantageously, the almost instantaneously freezing of supercooled water on a body (1). The present invention can be applied to aircrafts, wind turbines or to electrical power transmission lines.

公开(公告)号：US20230288446A1

公开(公告)日：2023-09-14

申请号：US18019930

申请日：2021-08-04

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jinseok KIM ,  Minsu JANG ,  Byung Kook KIM ,  Kyumin KANG

IPC: G01P15/097 ,  G01P15/18 ,  G01P15/08 ,  G01K11/3206

CPC classification number: G01P15/097 ,  G01K11/3206 ,  G01P15/0802 ,  G01P15/18

Abstract: Embodiments relate to an IMU sensor and an inertial measurement system comprising same, wherein the IMU sensor comprises: a core body including at least three surfaces each having a surface direction parallel to any one of three axes; a plurality of cantilevers configured to be deformable, one side of each cantilever being coupled to the core body; and a plurality of strain sensors each disposed on the surface of each cantilever, the strain sensors extending along the direction of the other side from one fixed side of the cantilever.

公开(公告)号：US20230280226A1

公开(公告)日：2023-09-07

申请号：US17892057

申请日：2022-08-20

Applicant: Inner Mongolia University of Technology

Inventor： Xiaoxiao WANG ,  Shuguang LIU ,  Changwang YAN ,  Yufei DONG

IPC: G01L11/02 ,  G01K11/3206

CPC classification number: G01L11/025 ,  G01K11/3206

Abstract: A device for testing temperature conduction and frost-heaving strain of a concrete lining canal comprises: a frost-heaving device comprising a lining canal body and a temperature control device, the temperature control device being configured to provide a predetermined temperature for the lining canal body; a detection device comprising a transverse deformation detection device, a vertical deformation detection device and a plurality of temperature sensors, the transverse deformation detection device being configured to detect a transverse frost-heaving strain parameter of the lining canal body, and the plurality of temperature sensors being arranged along an axial direction of the lining canal body, being embedded inside the lining canal body and being configured to detect temperature conduction performance of the lining canal body.

公开(公告)号：US11627882B2

公开(公告)日：2023-04-18

申请号：US16253778

申请日：2019-01-22

Applicant: Chelak Medical Solution Inc.

Inventor： Dhanunjaya Lakkireddy ,  Jie Cheng

IPC: A61B5/01 ,  G01K11/3206 ,  G01K13/20 ,  A61B90/00 ,  A61B5/00 ,  A61B6/00 ,  A61B17/02 ,  A61B18/00 ,  A61B18/14 ,  A61B17/00

Abstract: Certain aspects of the present disclosure provide methods and apparatus for managing an esophagus of a subject during a medical procedure, such as cardiac tissue ablation or bronchial tissue ablation. Managing the esophagus may include displacing the esophagus, imaging the esophagus, and/or measuring temperature at one or more locations inside the esophagus. One example esophageal management system generally includes a tube configured for insertion through a mouth and into the esophagus of the subject. The tube generally includes a first port located at a proximal end of the tube and in fluid communication with a distal portion of the tube via a first path, a second port located at the proximal end of the tube, and a third port located between the proximal end of the tube and a distal end of the tube and in fluid communication with the second port via a second path.

公开(公告)号：US11598679B2

公开(公告)日：2023-03-07

申请号：US16980078

申请日：2019-08-09

Applicant: FBG KOREA INC.

Inventor： Geum Suk Lee

IPC: G01K11/3206 ,  G01D5/353 ,  G01K1/08

Abstract: A temperature measuring device using an optical fiber Bragg grating sensor is proposed, which includes: an optical fiber wound one or more times on a ring part, which has a preset diameter by rotating a part of the optical fiber once, thereby maintaining a predetermined shape; a housing in which the optical fiber is arranged; and an optical fiber Bragg grating sensor provided in a straight line part of the optical fiber, and thus the present invention prevents deformation of the optical fiber and the optical fiber Bragg grating sensor, which are arranged to be spaced apart at a predetermined distance in the housing, even when deformation occurs in the housing according to a change in the outside temperature, thereby accurately measuring temperature without distortion.

公开(公告)号：US11585692B2

公开(公告)日：2023-02-21

申请号：US16773181

申请日：2020-01-27

Applicant: Palo Alto Research Center Incorporated ,  General Electric Company

Inventor： Peter Kiesel ,  Ajay Raghavan ,  Todd Karin ,  Qiushu Chen ,  Malcolm G. Smith, Jr. ,  Robert T. Stinson, IV

IPC: G01H9/00 ,  G01H13/00 ,  H01F27/14 ,  G01L1/24 ,  G01D5/353 ,  G01K11/3206 ,  H01F27/12 ,  H01F27/40

Abstract: A sensor system includes a sensor network comprising at least one optical fiber having one or more optical sensors. At least one of the optical sensors is arranged to sense vibration of an electrical device and to produce a time variation in light output in response to the vibration. A detector generates an electrical time domain signal in response to the time variation in light output. An analyzer acquires a snapshot frequency component signal which comprises one or more time varying signals of frequency components of the time domain signal over a data acquisition time period. The analyzer detects a condition of the electrical device based on the snapshot frequency component signal.

公开(公告)号：US20230048107A1

公开(公告)日：2023-02-16

申请号：US17795231

申请日：2020-03-25

Applicant: Mitsubishi Electric Corporation

Inventor： Masahiro MIYASHITA ,  Shigeru UTSUMI

IPC: G01K11/3206 ,  G01B11/16

Abstract: A cam portion (22) is attached to a first position (111) on a measurement target (110). A moving portion (24) is attached to a second position (112) on the measurement target (110) and is movable with respect to the cam portion (22) in an expanding/contracting direction of the measurement target (110). A strain portion (25) is attached to the moving portion (24) so as to fit along the measurement target (110), and is pressed against the cam portion (22). A strain of the strain portion (25) changes when the measurement target (110) expands or contracts and the moving portion moves (24) accordingly. An optical fiber sensor (10) has a temperature measurement portion (16) for measuring a temperature, and a strain measurement portion (17) for measuring a strain, and is attached to the strain portion (25).

公开(公告)号：US11359939B2

公开(公告)日：2022-06-14

申请号：US16952220

申请日：2020-11-19

Applicant: NATIONAL RESEARCH COUNCIL OF CANADA

Inventor： Dan Grobnic ,  Stephen Mihailov ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  David Coulas ,  Cyril Hnatovsky

IPC: G01D5/353 ,  G01K11/3206 ,  G01L1/24 ,  G02B6/02 ,  G02B6/124 ,  G02B6/136 ,  G02B6/34

Abstract: Provided is an optical waveguide with an inscribed Bragg grating, where the Bragg grating is stable at high temperature, has low scattering loss and high reflectivity. Also provided is a method for inscribing a Bragg grating in an optical waveguide, the method comprising irradiating the optical waveguide with electromagnetic radiation from an ultrashort pulse duration laser of sufficient intensity to cause a permanent change in an index of refraction within a core of the optical waveguide, where the irradiating step is terminated prior to erasure of a Bragg resonance, and heating the optical waveguide to a temperature and for a duration sufficient to substantially remove a non-permanent grating formed in the optical waveguide by the irradiating step.

公开(公告)号：US20220128416A1

公开(公告)日：2022-04-28

申请号：US17647190

申请日：2022-01-06

Applicant: SAAB AB

Inventor： Roy JOSEFSSON ,  Daniel ECKERSTROEM

IPC: G01K11/3206 ,  G01D5/353 ,  G01D3/10

Abstract: The invention relates to a method for determining temperature changes of an optical fibre (250) having Fiber Bragg Grating (FBG) patterns provided in at least one portion (Portion 1) of said optical fibre (250), said optical fibre (250) being connected between a first detector arrangement (210) and a second detector arrangement (220), the method comprising the steps of: emitting (s410) light into said optical fibre (250) in a first direction (D1) from said first detector arrangement (210), receiving reflections from said (FBG) patterns of such emitted light by said first detector arrangement (210), and processing said reflections for determining a current temperature change related to said optical fibre (250); on the basis of predetermined criteria, emitting (s440) light into said optical fibre (250) in an opposite, second, direction (D2) from said second detector arrangement (220), receiving reflections from said (FBG) patterns of such emitted light by said second detector arrangement (220), and processing said reflections for determining a current temperature change related to said optical fibre (250). The invention relates also to a computer program product comprising program code (P) for a computer (233; 243; 253; 500) for implementing a method according to the invention. The invention relates also to a system (289) for determining temperature changes of an optical fibre (250). The invention also relates to a platform (100) being equipped with the system (289).