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公开(公告)号：US20180188129A1
公开(公告)日：2018-07-05
申请号：US15479751
申请日：2017-04-05
Applicant: General Electric Company
Inventor： Niloy Choudhury , Cheng-Po Chen , Radislav Alexandrovich Potyrailo
Abstract: A scanning system for producing a path averaged concentration map of a leaking plume is provided. The system includes a tunable light source capable of tuning its wavelength over the absorption band of the specimen of interest, a lightweight mirror to scan the light, a lightweight collection optic, an array of detectors to measure reflected light, one or more processors configured to align the scanning with the detected signal and analyze the signal to produce a path averaged concentration map of the leaking plume, the one or more processors configured to use an analytical model of plume dynamics to compare the detected concentration map and calculate leak location and rate, and a flying platform that can fly in a control flight path.
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公开(公告)号：US09823184B1
公开(公告)日：2017-11-21
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：US20150059435A1
公开(公告)日：2015-03-05
申请号：US14467304
申请日：2014-08-25
Applicant: General Electric Company
Inventor： Niloy Choudhury , Nagapriya Kavoori Sethumadhavan , Sandip Maity
IPC: G01N21/17
CPC classification number: G01N21/1702 , G01J3/433 , G01N21/3577 , G01N21/39 , G01N21/85 , G01N29/222 , G01N29/2425 , G01N29/30 , G01N33/2841 , G01N33/2847 , G01N2021/1704 , G01N2201/06113 , G01N2201/067 , G01N2291/02809
Abstract: A system and a method for detecting of components in a sample fluid includes a first chamber having a sample fluid and a second chamber coupled to the first chamber, wherein the second chamber has a reference fluid. The system includes a modulated light source for emitting a modulated light beam to the sample fluid and the reference fluid, to generate a first acoustic signal in the first chamber and a second acoustic signal in the second chamber. The system further includes a pressure sensor disposed between the first chamber and the second chamber, for detecting a difference between the first acoustic signal and the second acoustic signal. The system includes a processor based module communicatively coupled to the pressure sensor and configured to receive a signal representative of the difference and determine at least one of a component and the concentration of the component in the sample fluid.
Abstract translation: 用于检测样品流体中的组分的系统和方法包括具有样品流体的第一室和联接到第一室的第二室，其中第二室具有参考流体。 该系统包括用于将调制的光束发射到样品流体和参考流体的调制光源，以在第一室中产生第一声信号，并在第二室中产生第二声信号。 该系统还包括设置在第一室和第二室之间的压力传感器，用于检测第一声信号和第二声信号之间的差。 该系统包括基于处理器的模块，其通信地耦合到压力传感器并且被配置为接收代表该差异的信号，并且确定样品流体中的组分和组分的浓度中的至少一个。
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公开(公告)号：US10704981B2
公开(公告)日：2020-07-07
申请号：US15479751
申请日：2017-04-05
Applicant: General Electric Company
Inventor： Niloy Choudhury , Cheng-Po Chen , Radislav Alexandrovich Potyrailo
IPC: G01M3/04 , G01N21/85 , G01N21/3504 , G01N21/39
Abstract: A scanning system for producing a path averaged concentration map of a leaking plume is provided. The system includes a tunable light source capable of tuning its wavelength over the absorption band of the specimen of interest, a lightweight mirror to scan the light, a lightweight collection optic, an array of detectors to measure reflected light, one or more processors configured to align the scanning with the detected signal and analyze the signal to produce a path averaged concentration map of the leaking plume, the one or more processors configured to use an analytical model of plume dynamics to compare the detected concentration map and calculate leak location and rate, and a flying platform that can fly in a control flight path.
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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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Patent Agency Ranking
公开(公告)号：US09739706B2
公开(公告)日：2017-08-22
申请号：US14467136
申请日：2014-08-25
Applicant: General Electric Company
Inventor： Sandip Maity , Nagapriya Kavoori Sethumadhavan , Niloy Choudhury
CPC classification number: G01N21/1702 , G01N29/2418 , G01N29/2425 , G01N29/46 , G01N29/48 , G01N2021/1704 , G01N2021/1708 , G01N2201/06113 , G01N2201/067 , G01N2291/02433 , G01N2291/02809
Abstract: A method for detecting of components in a fluid includes emitting a modulated light beam from a modulated light source to the fluid in a chamber, wherein the fluid comprises a liquid and a component in the liquid. The method includes producing an acoustic signal in response to the emitted modulated light beam and detecting the acoustic signal via a pressure sensor disposed in the chamber. The method in one example also includes transmitting the acoustic signal from the pressure sensor to a processor based module and determining at least one of a component and a concentration of the component in the fluid via the processor based module, based on the acoustic signal.
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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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公开(公告)号：US20170097464A1
公开(公告)日：2017-04-06
申请号：US14876411
申请日：2015-10-06
Applicant: General Electric Company
Inventor： William Albert Challener , Niloy Choudhury , Sabarni Palit
IPC: G02B6/02 , G01J3/02 , G01N21/3504
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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