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公开(公告)号：US20230417612A1
公开(公告)日：2023-12-28
申请号：US18323955
申请日：2023-05-25
申请人： AKTIEBOLAGET SKF
发明人： James P. LEBLANC , Patrik PÄÄJÄRVI
CPC分类号： G01L5/0019 , F16C19/522 , G01L1/246 , G01B11/165 , G01M13/04
摘要： A bearing device includes a bearing having an inner ring and an outer ring, at least one of the inner and outer rings being capable of rotating concentrically relative to the other ring. A fiber optic sensor includes an array of optical strain gauges mounted on the inner ring or on the outer ring of the bearing and an optical interrogator is configured to measure the deformations of the inner ring or the outer ring from the optical strain gauges. A command device commands the optical interrogator, a first determining device determines a statistical parameter from random samples of measurements, and a second determining device determines the load acting on the bearing from the statistical parameter and a predetermined relationship between the statistical parameter and the load.
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公开(公告)号：US20230417542A1
公开(公告)日：2023-12-28
申请号：US18025857
申请日：2021-09-08
IPC分类号： G01B11/16
CPC分类号： G01B11/18 , A61B34/20 , G01B11/161
摘要： The present invention relates to a method of representing shape of an optical fiber sensor (12) having a central core (16) and a plurality of outer cores (14, 18, 20), each core comprising one or more sensing elements, the method comprising: (a) optically interrogating the cores (14, 16, 18, 20) of the fiber sensor (12) from an incident optical wave over a wavelength range centered on a resonance wavelength of the one or more sensing elements, wherein the wavelength range is associated with a detection limited to a minimum radius of curvature along the fiber sensor; (b) reconstructing the shape of the fiber sensor (12) involving processing of interferometric signals received from the optical interrogation of the cores (14, 16, 18, 20), including reconstructing the shape of at least one out-of-range section along the fiber sensor (12) which is a section having a radius of curvature lower than the minimum radius of curvature, wherein reconstructing the shape of the at least one out-of-range section includes calculating curvature of the fiber sensor (12) in the at least one out-of-range section from interferometric signals received from the interrogation of the central core (16) in the at least one out-of-range section; (c) displaying the shape of the fiber sensor (12) including the at least one out-of-range section. A system to carry out the method is also described.
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公开(公告)号：US11828736B2
公开(公告)日：2023-11-28
申请号：US17052537
申请日：2019-04-24
申请人： Valmet Automation Oy
CPC分类号： G01N3/20 , B65H23/044 , D21F1/48 , D21G9/0027 , G01B11/06 , G01N33/346 , B65H2511/23 , B65H2515/37 , B65H2553/10 , B65H2553/45 , G01N2203/0046 , G01N2203/0075 , G01N2203/0282
摘要： According to an example aspect of the present invention, there is provided a method, comprising: controlling suction with predetermined force in a known measurement area to a moving cardboard or paper web in a manufacturing process, detecting on-line measurement information on deviation of the moving cardboard or paper web in the manufacturing process caused by the suction with predetermined force in the known measurement area, and determining elastic modulus of the moving cardboard or paper web in the manufacturing process on the basis of the measured deviation.
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24.发明公开公开(公告)号：US20230221109A1
公开(公告)日：2023-07-13
申请号：US18008720
申请日：2021-06-23
发明人： Xitao SONG , Ruimin WU , Zhenhong WEI , Xingdong GONG
CPC分类号： G01B11/026 , G01K15/005 , G01B11/16
摘要： A method for calibrating an elongated metallurgical tool based on a laser distance sensor (6). A temperature measurement/sampling tool (3) is driven by an industrial robot (1) so that a standard temperature measurement/sampling gun (4) enters a calibration area, the standard temperature measurement/sampling gun (4) reciprocates at the vicinity of a laser distance sensor (6), the standard axis is obtained by using a vector on a generatrix of the standard temperature measurement/sampling gun (4) based on the laser distance sensor (6), the position and orientation of the temperature measurement/sampling tool (3) is adjusted so that the axis of the standard temperature measurement/sampling gun (4) is parallel to the set standard axis, and moreover, positioning and identification is performed on an end TCP point of the temperature measurement/sampling tool (3) to obtain a tool coordinate system corresponding to the temperature measurement/sampling tool (3), and deformation of the standard temperature measurement/sampling gun (4) can be detected in the calibration process, to ensure the accuracy and stability of system operation of the industrial robot (1). In addition, also provided is a device for calibrating an elongated metallurgical tool based on a laser distance sensor (6).
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公开(公告)号：US11698323B2
公开(公告)日：2023-07-11
申请号：US16821356
申请日：2020-03-17
发明人： Spenser Anderson , Hong Yu , Peter Kiesel , Ajay Raghavan
CPC分类号： G01M5/0033 , G01B11/16 , G06N5/022 , G06N7/01
摘要： A set of load responses of an asset for a sample of traffic loading events caused by objects of unknown weight is measured. At least one statistical parameter is determined from the set of load responses. A corresponding statistical parameter of known object weights loading the asset is determined. An object weight is assigned to a load response of the set of load responses based on correlation of the extracted statistical parameter to the corresponding statistical parameter.
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公开(公告)号：US20230122326A1
公开(公告)日：2023-04-20
申请号：US18083205
申请日：2022-12-16
发明人： Patrick Roye , Mark E. Froggatt , Dawn K. Gifford
IPC分类号： G01B11/16 , G01B9/02004 , B25J9/00 , B25J9/12 , B25J11/00 , B25J13/08 , B25J18/00 , A61B34/30 , A61B34/35 , B25J9/16 , G01B11/26
摘要： A fiber includes M primary cores and N redundant cores, where M an integer is greater than two and N is an integer greater than one. Interferometric circuitry detects interferometric pattern data associated with the M primary cores and the N redundant cores when the optical fiber is placed into a sensing position. Data processing circuitry calculates a primary core fiber bend value for the M primary cores and a redundant core fiber bend value for the N redundant cores based on a predetermined geometry of the M primary cores and the N redundant cores in the fiber and detected interferometric pattern data associated with the M primary cores and the N redundant cores. The primary core fiber bend value and the redundant core fiber bend value are compared in a comparison. The detected data for the M primary cores is determined reliable or unreliable based on the comparison. A signal is generated in response to an unreliable determination.
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公开(公告)号：US11624870B2
公开(公告)日：2023-04-11
申请号：US17203701
申请日：2021-03-16
摘要： An optical fiber includes multiple optical cores configured in the fiber including a set of primary cores and an auxiliary core. An interferometric measurement system uses measurements from the multiple primary cores to predict a response from the auxiliary core. The predicted auxiliary core response is compared with the actual auxiliary core response to determine if they differ by more than a predetermined amount, in which case the measurements from the multiple primary cores may be deemed unreliable.
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公开(公告)号：US11618591B2
公开(公告)日：2023-04-04
申请号：US16786588
申请日：2020-02-10
申请人： The Boeing Company
摘要： An example system for in-situ inspection of a composite structure includes a surface-strain imaging apparatus and a controller. The surface-strain imaging apparatus is configured to image an area of an outer surface of the composite structure while a temperature of the composite structure warms to thermal equilibrium with a surrounding environment and a temperature gradient exists within the composite structure. The controller includes a processor and a memory, and is configured to detect, using data received from the surface-strain imaging apparatus, an out-of-plane displacement of the outer surface in the area caused by the temperature gradient. The controller is also configured to determine that the out-of-plane displacement satisfies a threshold condition and, based on determining that the out-of-plane displacement satisfies the threshold condition, flag the area of the outer surface for further inspection.
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公开(公告)号：US11614583B2
公开(公告)日：2023-03-28
申请号：US16767918
申请日：2018-11-29
申请人： Cornell University
发明人： Robert Shepherd , Hedan Bai , Shuo Li , Yaqi Tu
摘要： A waveguide is provided. The waveguide having a first core, a second core spaced apart from and parallel with the first core, and a cladding surrounding the first core and the second core. An interstitial portion of the cladding is located between the first core and the second core. A first region of the first core adjacent to the cladding or of the cladding adjacent to the first core is color dyed.
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30.发明申请公开(公告)号：US20230090082A1
公开(公告)日：2023-03-23
申请号：US17802007
申请日：2021-03-18
申请人： NEC Corporation
发明人： Takahiro ONO
IPC分类号： G01B11/16 , G01B11/26 , G01S7/4861 , G01S17/10
摘要： In order to detect inclination of a smokestack, a smokestack inclination detection device 100D comprises an information generation unit 13 and an inclination detection unit 15. The information generation unit 13 generates smokestack shape information on the basis of reflected laser light. The reflected laser light refers to light resulting from laser light illuminated on the smokestack and reflected by the smokestack. The smokestack shape information refers to information about the shape of the smokestack. The inclination detection section 15 detects the inclination of the smokestack on the basis of the smokestack shape information generated by the information generation unit 13.
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