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公开(公告)号：US20230125349A1
公开(公告)日：2023-04-27
申请号：US17874201
申请日：2022-07-26
申请人： Tianjin University
发明人： Xin GAO , Zhenyu ZHAO , Hong LI
摘要： A method for in situ measurement of temperature at microwave-induced microscopic hot spots, temperature measuring particles and the device used are provided. For the temperature measurement demand of the microscopic hot spot of microwave field, loading fluorescent temperature measuring particles on the surface of solid particles, and the actual temperature of particles in micro scale can be measured by using its temperature sensitive fluorescence characteristics. The present disclosure builds a microwave field in-situ fluorescence test device to disperse the test particles loaded with fluorescent temperature measuring materials in the liquid solvent and place in the quartz sample tank in the microwave cavity, which can measure the actual temperature of the particles to be measured under microwave radiation. The present disclosure breaks through the difficult problem of measuring micro scale temperature in microwave field and can realize the quantitative measurement of microwave-induced overheating temperature in micro scale.
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公开(公告)号：US11624664B2
公开(公告)日：2023-04-11
申请号：US17110996
申请日：2020-12-03
摘要： A pH photothermal spectrometer includes a container that receives an analyte medium and pH-sensitive chromophore. An excitation fiber and optical thermometer are disposed in the container. The optical thermometer include a light receiver disposed on a temperature detector fiber.
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23.发明申请公开(公告)号：US20230022560A1
公开(公告)日：2023-01-26
申请号：US17788383
申请日：2020-12-23
发明人： Ian HOWARD , Dmitry BUSKO , Guojun GAO , Ngei KATUMO , Andrey TURSHATOV , Bryce RICHARDS
IPC分类号： G01K11/32
摘要： The present invention relates to a system, method and computer-program for evaluating the photoluminescence of a photonic marker as well as to a photonic marker for temperature sensing and/or security marking and to the use of the photonic marker for temperature sensing and/or security marking. The photonic marker according to an aspect of the present invention comprises a host material selected from the group consisting of a rare earth element oxysulfide and strontium aluminate, wherein the host material is doped with Eu3+ or Eu2+ as a dopant.
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公开(公告)号：US11530955B2
公开(公告)日：2022-12-20
申请号：US17001132
申请日：2020-08-24
发明人： Daoman Han , Yongxin Liu , Fei Gao , Zigeng Liu , Zhenguo Jing , Younian Wang
摘要： The present invention discloses a device for measuring gas temperature in plasma, including: a vacuum chamber, a fiber optic temperature sensor, a quartz tube, a circulator, a spectrometer, a broadband light source and a computer. One end of the quartz tube is inserted into the vacuum chamber. The fiber optic temperature sensor is located in the plasma in the vacuum chamber and fixed to the quartz tube. The fiber optic temperature sensor is connected to the circulator by means of an optical fiber passing through the quartz tube. The circulator is connected to the broadband light source and the spectrometer through optical fibers, respectively. The spectrometer is electrically connected to the computer which is configured to read and record spectra collected by the spectrometer.
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公开(公告)号：US11506561B2
公开(公告)日：2022-11-22
申请号：US16711886
申请日：2019-12-12
发明人： Alessio Cipullo , Sy-Dat Le , Carlos Bueno Vazquez
IPC分类号： G01M3/04 , G01K11/3206 , B64D45/00 , G01K11/32 , G01K13/024 , G01M3/00 , G01M3/38
摘要： An overheat detection system for an aircraft, the system comprising a first bleed monitoring computer, BMC1, configured to identify leakages in a pneumatic system, the BMC1 including a first optical controller, a second bleed monitoring computer, BMC2, the BMC2 including a second optical controller, an optical fiber link connecting the first optical controller of the BMC1 and the second optical controller of the BMC2 for communication between the BMC1 and the BCM2 and between the first optical controller and the second optical controller, wherein the first and the second optical controllers are configured to detect overheat of the optical fiber link based on a wavelength shift of a modulated optical signal transmitted through the optical fiber link, and transmit signals to the first BMC1 and the second BMC2 based at least on the detected overheat.
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公开(公告)号：US20220364943A1
公开(公告)日：2022-11-17
申请号：US17746315
申请日：2022-05-17
摘要： A machine learning system and method are provided for using fiber-optic Distributed Acoustic Sensor (DAS) and Distributed Temperature Sensor (DTS) data to predict pressure along one or more optical fiber cables. DAS and DTS data are used to train a model to predict pressure based on the DAS and DTS data corresponding to optical signals carried on the fiber cable(s). The trained model is then used to process acquired DAS and DTS data corresponding to optical signals carried on the fiber cable(s) to the predict pressure distributed along the cable(s).
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公开(公告)号：US11492151B2
公开(公告)日：2022-11-08
申请号：US16872715
申请日：2020-05-12
摘要： An atmospheric suit includes a torso portion with one or more layers, and fibers of a first material arranged in each of the one or more layers. Optical fibers are interspersed with the fibers of the first material in each of the one or more layers.
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公开(公告)号：US20220334007A1
公开(公告)日：2022-10-20
申请号：US17855022
申请日：2022-06-30
申请人： OFS Fitel, LLC
发明人： David D. Braganza , Jie Li , Xiaoguang Sun
摘要： Disclosed herein is a method for measuring temperature via distributed temperature sensing comprising transmitting light through a fiber optic cable; detecting backscattered light in the fiber optic cable, wherein the backscattered light comprises an anti-Stokes band and a Stokes band; calculating a ratio between an intensity of the anti-Stokes band and an intensity of the Stokes band; and using the calculated ratio to determine a temperature being sensed in the fiber optic cable; wherein the fiber optic cable comprises, from the center to the periphery; a central core having a refractive index that decreases progressively from a center of the central core to an edge of the core, wherein the refractive index follows an alpha profile; wherein a bandwidth-length product of the multimode optical fiber has a value greater than 2000 MHz-km at 1550 nm.
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公开(公告)号：US20220334006A1
公开(公告)日：2022-10-20
申请号：US17763363
申请日：2019-09-30
申请人： NEC Corporation
发明人： Takashi KOJIMA
摘要： A detection system according to the present disclosure includes an optical fiber (10) configured to detect environment information, an acquisition unit (21) configured to acquire the environment information included in an optical signal received from the optical fiber (10), and a detection unit (22) configured to detect an event in the vicinity of the optical fiber (10) on the basis of a first environment pattern based on environment information acquired from an optical signal associated to a first period and a second environment pattern based on environment information acquired from an optical signal associated to a second period.
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公开(公告)号：US20220333976A1
公开(公告)日：2022-10-20
申请号：US17718377
申请日：2022-04-12
申请人： VIAVI SOLUTIONS INC.
摘要： According to examples, an optical fiber-based sensing membrane may include at least one optical fiber, and a substrate. The at least one optical fiber may be integrated in the substrate. The optical fiber-based sensing membrane may include, based on a specified geometric pattern of the at least one optical fiber, an optical fiber-based sensing membrane layout. The substrate may include a thickness and a material property that are specified to ascertain, via the at least one optical fiber and based on the optical fiber-based sensing membrane layout, a thermal and/or a mechanical property associated with a device, or a radiation level associated with a device environment.
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