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公开(公告)号：US20190257853A1
公开(公告)日：2019-08-22
申请号：US15968668
申请日：2018-05-01
Applicant: General Electric Company
Inventor： William Albert Challener , Mengli Wang
IPC: G01P15/093 , G02B26/02 , G01H9/00
Abstract: An accelerometer includes a membrane, an energy source producing a laser beam which is directed at the membrane causing it to vibrate, and a transparent cap disposed at one end of the energy source. The accelerometer includes a first controller for adjusting an output power of the energy source in a first feedback loop, a second controller for controlling the wavelength of the laser beam in a second feedback loop, and a detector sensing a reflected portion of the laser beam. An acceleration signal is based in part on the frequency of the reflected portion of the laser beam.
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公开(公告)号：US09910014B2
公开(公告)日：2018-03-06
申请号：US14977820
申请日：2015-12-22
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Niloy Choudhury , William Albert Challener
IPC: G01M3/04 , G01N21/17 , G02B6/02 , G02B6/032 , G01N29/02 , G01M3/38 , G01M3/24 , G01N29/024 , G01N29/14 , G01N29/24
CPC classification number: G01N29/02 , G01M3/24 , G01M3/243 , G01M3/38 , G01N21/17 , G01N21/1702 , G01N29/024 , G01N29/14 , G01N29/2418 , G01N2021/1704 , G01N2021/1708 , G01N2291/012 , G01N2291/021 , G02B6/02304 , G02B6/02328 , G02B6/02366
Abstract: A method for the detection of a gas flowing from a location in a structure is described. A hollow-core optical fiber is placed in a position adjacent the structure. The fiber includes a sound-conductive cladding layer; and further includes at least one aperture extending into its cross-sectional diameter. A beam of pulsed, optical is transmitted into the fiber with a tunable laser. The optical energy is characterized by a wavelength that can be absorbed by the gas that flows into the fiber through the aperture. This causes a temperature fluctuation in the region of gas absorption, which in turn generates an acoustic wave in the absorption region. The acoustic wave travels through the cladding layer, and can be detected with a microphone, so as to provide the location of gas flow, based on the recorded position and movement of the acoustic wave. A related system is also described.
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23.发明授权Fiber optic sensing apparatus including fiber gratings and method for sensing parameters involving different parameter modalities 有权包括光纤光栅的光纤传感设备和用于感测涉及不同参数模态的参数的方法公开(公告)号：US09488786B2
公开(公告)日：2016-11-08
申请号：US13678979
申请日：2012-11-16
Applicant: General Electric Company
Inventor： Glen Peter Koste , Raymond Verle Jensen , Hua Xia , Boon Kwee Lee , Victor Petrovich Ostroverkhov , Sachin Narahari Dekate , William Albert Challener
CPC classification number: G02B6/34 , G01B9/02 , G01D5/35316 , G01D5/35358 , G01D5/3539
Abstract: Optical-based apparatus and method for sensing parameters in connection with an asset, such as a pipeline, are provided. At least two sites in an optical fiber may include a respective fiber grating arranged to have a respective optical response in a wavelength spectrum having a distinguishing feature indicative of a value of a respective local parameter at a respective grating site. The two fiber gratings may be further arranged to form, in combination with a respective portion of the optical fiber which extends between the two sites, respective optical backscatter portions that when combined with one another are effective to sense an optical change in the fiber portion between the sites indicative of a value of a distributed parameter. This is a parameter modality different from a parameter modality of the respective local parameters at the respective grating sites.
Abstract translation: 提供了用于感测与资产（例如管道）相关的参数的基于光学的装置和方法。 光纤中的至少两个位置可以包括相应的光纤光栅，其被布置为在具有指示相应光栅位置处的相应局部参数的值的区别特征的波长光谱中具有相应的光学响应。 两个光纤光栅可以进一步布置成与在两个位置之间延伸的光纤的相应部分组合形成相应的光学反向散射部分，当彼此组合时，有效地感测光纤部分之间的光学变化， 表示分布参数值的站点。 这是与各个光栅位置处的各个局部参数的参数模态不同的参数模态。
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公开(公告)号：US09250140B2
公开(公告)日：2016-02-02
申请号：US14226062
申请日：2014-03-26
Applicant: General Electric Company
Inventor： William Albert Challener
CPC classification number: G01K11/32 , B81B7/02 , G01L11/025 , G01V8/10 , H04J14/0201 , H04J14/028
Abstract: A wavelength assignment system in one embodiment includes an upstream port, a sensor port, and a downstream port. The upstream port is configured to receive a transmitted signal including a drive component and a read component comprising individual read channel components at corresponding individual read wavelengths. The sensor port is configured to provide a sensor component of the transmitted signal including a sensor portion of the drive component and substantially all of an individual read channel component to a sensor. The downstream port is configured to provide a downstream component including a downstream portion of the drive component and at least one additional read channel component of the transmitted signal to at least one additional sensor disposed downstream of the sensor. The wavelength assignment system is configured to receive the transmitted signal and separate the transmitted signal into the sensor component and the downstream component.
Abstract translation: 一个实施例中的波长分配系统包括上游端口，传感器端口和下游端口。 上游端口被配置为接收包括驱动部件的传输信号和包括在相应的单独读取波长的各个读取通道部件的读取部件。 传感器端口被配置为提供传输信号的传感器部件，其包括驱动部件的传感器部分和基本上所有的单个读取通道部件到传感器。 下游端口被配置为提供包括驱动部件的下游部分的下游部件以及传输信号的至少一个附加读取通道部件到设置在传感器下游的至少一个附加传感器。 波长分配系统被配置为接收所发送的信号并将发送的信号分离成传感器部件和下游部件。
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公开(公告)号：US09134199B2
公开(公告)日：2015-09-15
申请号：US13925485
申请日：2013-06-24
Applicant: General Electric Company
Inventor： Wontae Hwang , Vinay Bhaskar Jammu , Jason Harris Karp , Mohamed Sakami , William Albert Challener
IPC: G01M15/14
CPC classification number: G01M15/14
Abstract: A system for optically monitoring a gas turbine engine includes an optical multiplexer configured to receive multiple images from respective viewports into the gas turbine engine. The optical multiplexer includes a movable reflective device configured to selectively direct at least a portion of each image toward a detector array, and the detector array is directed toward a fixed location on the optical multiplexer.
Abstract translation: 用于光学监测燃气涡轮发动机的系统包括配置成从相应视口将多个图像接收到燃气涡轮发动机中的光学多路复用器。 光学多路复用器包括可移动反射装置，其被配置为选择性地将每个图像的至少一部分引向检测器阵列，并且检测器阵列被引向光复用器上的固定位置。
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Patent Agency Ranking
公开(公告)号：US20140376590A1
公开(公告)日：2014-12-25
申请号：US13925476
申请日：2013-06-24
Applicant: General Electric Company
Inventor： Wontae Hwang , William Albert Challener , Jason Harris Karp
IPC: G01M15/14
CPC classification number: G01M15/14 , Y10T29/49826
Abstract: A system for optically monitoring a gas turbine engine includes a viewport having an opening disposed within a casing of the gas turbine engine. The opening extends from an interior side of the casing to an exterior side of the casing, and the viewport is configured to receive an image from inside the casing. The system also includes an optical connection positioned outside the casing and optically coupled to the viewport. The optical connection is configured to convey the image from the viewport to a detector array, and the optical connection includes multiple optical fibers fused to one another to form a unitary substantially rigid fiber bundle.
Abstract translation: 用于光学监测燃气涡轮发动机的系统包括具有设置在燃气涡轮发动机的壳体内的开口的视口。 开口从壳体的内侧延伸到壳体的外侧，并且视口被配置为从壳体内部接收图像。 该系统还包括位于壳体外部并光学耦合到视口的光学连接。 光学连接被配置为将图像从视口传送到检测器阵列，并且光学连接包括彼此熔合以形成整体的基本上刚性的纤维束的多个光纤。
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27.发明公开公开(公告)号：US20230393335A1
公开(公告)日：2023-12-07
申请号：US17483968
申请日：2021-09-24
Applicant: General Electric Company
Inventor： William Albert Challener , Stephen Francis Bush
CPC classification number: G02B6/126 , G02B6/125 , H04L9/0852
Abstract: A photonic integrated circuit includes a waveguide that receive photons from an optical fiber and directs the photons in a loop formed by the waveguide. The circuit also includes one or more of a variable optical attenuator and configured to adjust a number of the photons between a key level and one or more decoy levels, an intensity modulator coupled with the waveguide and configured to adjust a number of the photons between a key level and a decoy level, and a phase shifter coupled with the waveguide and configured to change a phase of the photons. The waveguide is configured to direct one or more of the photons back out of the optical fiber after the one or more of the photons has passed through the loop formed by the waveguide with a polarization state of the one or more of the photons rotated by 90°.
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公开(公告)号：US20170328832A1
公开(公告)日：2017-11-16
申请号：US15154509
申请日：2016-05-13
Applicant: General Electric Company
Inventor： William Albert Challener , Sabarni Palit , Jason Harris Karp , Ansas Matthias Kasten , Niloy Choudhury
CPC classification number: G01N21/3103 , G01M3/38 , G01N21/255 , G01N2201/0826 , G02B6/02 , G02B6/02304
Abstract: A distributed gas detection system includes one or more hollow core fibers disposed in different locations, one or more solid core fibers optically coupled with the one or more hollow core fibers and configured to receive light of one or more wavelengths from a light source, and an interrogator device configured to receive at least some of the light propagating through the one or more solid core fibers and the one or more hollow core fibers. The interrogator device is configured to identify a location of a presence of a gas-of-interest by examining absorption of at least one of the wavelengths of the light at least one of the hollow core fibers.
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公开(公告)号：US09791619B2
公开(公告)日：2017-10-17
申请号：US14876411
申请日：2015-10-06
Applicant: General Electric Company
Inventor： William Albert Challener , Niloy Choudhury , Sabarni Palit
IPC: G02B6/032 , G01N21/3504 , G02B6/02 , G01J3/02 , G01N21/03
CPC classification number: G02B6/02328 , G01J3/0218 , G01J3/0221 , G01N21/0303 , G01N21/3504 , G01N2201/08 , G01N2201/088 , G02B6/02309 , G02B6/02347 , G02B6/02371
Abstract: Microstructured optical fiber (MOF) includes a cladding extending a length between first and second ends. The cladding includes an inner porous microstructure that at least partially surrounds a hollow core. A perimeter contour of the hollow core has a non-uniform radial distance from a center axis of the cladding such that first segments of the cladding along the perimeter contour have a shorter radial distance from the center axis relative to second segments of the cladding along the perimeter contour. The cladding receives and propagates light energy through the hollow core, and the inner porous microstructure substantially confines the light energy within the hollow core. The cladding defines at least one port hole that extends radially from an exterior surface of the cladding to the hollow core. Each port hole penetrates the perimeter contour of the hollow core through one of the second segments of the cladding.
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公开(公告)号：US20170176489A1
公开(公告)日：2017-06-22
申请号：US14977820
申请日：2015-12-22
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Niloy Choudhury , William Albert Challener
CPC classification number: G01N29/02 , G01M3/24 , G01M3/243 , G01M3/38 , G01N21/17 , G01N21/1702 , G01N29/024 , G01N29/14 , G01N29/2418 , G01N2021/1704 , G01N2021/1708 , G01N2291/012 , G01N2291/021 , G02B6/02304 , G02B6/02328 , G02B6/02366
Abstract: A method for the detection of a gas flowing from a location in a structure is described. A hollow-core optical fiber is placed in a position adjacent the structure. The fiber includes a sound-conductive cladding layer; and further includes at least one aperture extending into its cross-sectional diameter. A beam of pulsed, optical is transmitted into the fiber with a tunable laser. The optical energy is characterized by a wavelength that can be absorbed by the gas that flows into the fiber through the aperture. This causes a temperature fluctuation in the region of gas absorption, which in turn generates an acoustic wave in the absorption region. The acoustic wave travels through the cladding layer, and can be detected with a microphone, so as to provide the location of gas flow, based on the recorded position and movement of the acoustic wave. A related system is also described.
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