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1.发明公开公开(公告)号：US20240263971A1
公开(公告)日：2024-08-08
申请号：US18565314
申请日：2023-10-27
发明人： Ling JU , Beibei WENG , Yanquan ZHU , Xingchun XU , Xiaoyun LIAO , Lijian OUYANG , Jun XU , Li LIU , Yi HUANG , Chuanlu DENG , Chengyong HU
CPC分类号： G01D5/353 , H04J14/0215
摘要： Provided are a phase quadrature four-wavelength demodulation system and method of an optical fiber F-P cavity sensor. The phase quadrature four-wavelength demodulation system of the optical fiber F-P cavity sensor includes a flat ASE broadband light source, an optical fiber circulator, a dense wavelength division multiplexer, a photoelectric detector, and a data acquisition processing unit. The flat ASE broadband light source is connected to the optical fiber circulator, the optical fiber circulator is connected to the dense wavelength division multiplexer, the dense wavelength division multiplexer is connected to the photoelectric detector, and the photoelectric detector is connected to the data acquisition processing unit.
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公开(公告)号：US20240247582A1
公开(公告)日：2024-07-25
申请号：US18600206
申请日：2024-03-08
发明人： Sebastian Jung , Thomas Kruspe , Andreas Herbel
IPC分类号： E21B47/01 , E21B47/017 , G01B11/16 , G01D5/353 , G01P15/093
CPC分类号： E21B47/01 , E21B47/017 , G01B11/18 , G01D5/353 , G01P15/093
摘要： A method of manufacturing a transducer includes forming a support structure from a transparent material, the support structure configured to support a sensing element and deform in response to an environmental parameter. Forming the support structure includes modifying a first portion of the transparent material by exposing the first portion to laser radiation, and removing the first portion by an etching process. The method also includes disposing the sensing element at a fixed position relative to the support structure, the sensing element configured to generate a signal indicative of deformation of the support structure.
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3.发明公开公开(公告)号：US20240230381A9
公开(公告)日：2024-07-11
申请号：US17970394
申请日：2022-10-20
申请人： Intel Corporation
摘要： The disclosure is directed to apparatus and methods for detection of out of position (OOP) components in a carrier tape forming machine. An apparatus includes cross track sensors coupled to the bus interface circuitry, the cross track sensors configured to detect OOP components prior to overlaying the components on the carrier tape with cover tape, optical sensors to detect the OOP components on the carrier tape after overlaying with cover tape and prior to sealing and to detect reflections from OOP components seated on the carrier tape, an amplifier coupled to the optical sensors to amplify signals generated by the optical sensors and set a range for determining whether the components are OOP, and relays to receive indications of detected OOP components, and a controller coupled to the relays to stop the carrier tape forming machine as a function of signals received by the relays.
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4.发明公开公开(公告)号：US20240133718A1
公开(公告)日：2024-04-25
申请号：US17970394
申请日：2022-10-19
申请人： Intel Corporation
摘要： The disclosure is directed to apparatus and methods for detection of out of position (OOP) components in a carrier tape forming machine. An apparatus includes cross track sensors coupled to the bus interface circuitry, the cross track sensors configured to detect OOP components prior to overlaying the components on the carrier tape with cover tape, optical sensors to detect the OOP components on the carrier tape after overlaying with cover tape and prior to sealing and to detect reflections from OOP components seated on the carrier tape, an amplifier coupled to the optical sensors to amplify signals generated by the optical sensors and set a range for determining whether the components are OOP, and relays to receive indications of detected OOP components, and a controller coupled to the relays to stop the carrier tape forming machine as a function of signals received by the relays.
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5.发明授权公开(公告)号：US11946824B2
公开(公告)日：2024-04-02
申请号：US17644003
申请日：2021-12-13
发明人： Ezzedeen Alfataierge
CPC分类号： G01M11/3109 , E21B47/04 , E21B47/135 , G01D5/353 , G01D5/35316 , G01L1/246 , G01L25/00 , G02B6/02076 , G01V1/20
摘要： Methods for determining sensor channel location in distributed sensing of fiber-optic cables are disclosed. In one method, three or more Fiber Bragg-Gratings (FBGs) connected in series by a standard telecommunication fiber and interrogated using an input distributed fiber-optic sensing (DFOS) laser, where the input DFOS laser has a single wavelength. The input DFOS laser operates on a single wavelength that is different than the respective wavelengths of each of the three or more FBGs. The three or more FBGs are interrogated using an input broadband FBG laser. Each FBG reflects a wavelength of laser light that is proportional to the grating size, using an optical time domain reflectometer (OTDR) at the FBG wavelength, the distance to the particular FBG in the optical domain is computed and compared to the physical measurement of the FBG location. The sensor channel locations of the DFOS system are calibrated and constrained using this method.
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公开(公告)号：US11874145B2
公开(公告)日：2024-01-16
申请号：US17386871
申请日：2021-07-28
申请人： Paul Wysocki , Dan Provenzano , Zhao Li
发明人： Paul Wysocki , Dan Provenzano , Zhao Li
IPC分类号： G01D5/353 , E21B47/135 , G01H9/00 , G02B6/02
CPC分类号： G01D5/353 , E21B47/135 , G01H9/004 , G02B6/0208 , G02B6/02076
摘要： An optical system performs a method for measuring an acoustic signal in a wellbore. The optical system includes a light source, an optical fiber and a detector. The light source generates a light pulse. The optical fiber has a first end for receiving the light pulse from the light source and a plurality of enhancement scatterers spaced along a length of the optical fiber for reflecting the light pulse. A longitudinal density of the enhancement scatterers increases with a distance from the first end to increase a signal enhancement generated by the enhancement scatterers distal from the first end. The detector is at the first end of the optical fiber and measures a reflection of the light pulse at the enhancement scatterers to determine the acoustic signal.
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公开(公告)号：US11860242B2
公开(公告)日：2024-01-02
申请号：US17552790
申请日：2021-12-16
发明人： Ajay Raghavan , Peter Kiesel
IPC分类号： G01R31/62 , G01B11/16 , H04B3/46 , G01J3/18 , G02B6/293 , G01L1/24 , G01J3/00 , G01R19/25 , G01D5/353 , G02B6/12
CPC分类号： G01R31/62 , G01B11/18 , G01J3/00 , G01J3/1895 , G01L1/246 , G01R19/2513 , H04B3/46 , G01D5/353 , G02B6/12009 , G02B6/2938
摘要： A monitoring system for a power grid includes one or more power transformer monitors. Each power transformer monitor includes a plurality of optical sensors disposed on one or more optical fibers that sense parameters of the power transformer. Each optical sensor is configured to sense a power transformer parameter that is different from a power transformer parameter sensed by at least one other sensor of the plurality of optical sensors. An optical coupler spatially disperses optical signals from the optical sensors according to wavelength. A detector unit converts optical signals of the optical sensors to electrical signals representative of the sensed power transformer parameters.
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公开(公告)号：US11823567B2
公开(公告)日：2023-11-21
申请号：US17393986
申请日：2021-08-04
发明人： Hong Yu , Qiushu Chen , Peter Kiesel , Ajay Raghavan , Jin Yan , Kyle Arakaki
CPC分类号： G08G1/0116 , E01F11/00 , G01D5/353
摘要： A system includes a sensor network comprising at least two optical fibers coupled to a pavement. Each optical fiber includes one or more optical sensors installed a predetermined distance from one or more adjacent optical fibers. The one or more optical sensors are configured to produce a wavelength shift signal. A processor is configured to determine one or both of one or more attributes of one or more objects travelling on the pavement and a traffic condition of the pavement based on the wavelength shift signal. A transmitter is configured to transmit the one or more attributes to a predetermined location.
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公开(公告)号：US20190243062A1
公开(公告)日：2019-08-08
申请号：US16266659
申请日：2019-02-04
发明人： Mable P. Fok , Xiangiao Wang , Li Xu
CPC分类号： G02B6/02076 , G01D5/353
摘要： The present disclosure relates to a stretchable fiber optic sensor that can measure tension, bending, and torsion direction of an object. The fiber optic sensor includes an optical fiber with a fiber Bragg grating (FBG) embedded in a sinusoidal configuration at an off-center position of a deformable substrate.
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公开(公告)号：US20190049271A1
公开(公告)日：2019-02-14
申请号：US16077655
申请日：2017-02-23
发明人： Masahiro MIYASHITA , Kazushi SEKINE
CPC分类号： G01D5/353 , F28D15/0275 , F28F2200/005 , G01B11/16 , G01K11/12 , G01K11/32 , G01K11/3206
摘要： An optical fiber temperature sensor includes: a substrate having a first substrate main body, and a second substrate main body, which has a coefficient of thermal expansion larger than that of the first substrate main body, and is bonded to the first substrate main body; and an optical fiber having a FBG sensor portion for measuring a temperature from a relationship between a Bragg wavelength and the temperature, and the optical fiber is configured to be embedded in the second substrate main body so that the FBG sensor portion is positioned in the second substrate main body.
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