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公开(公告)号：US20160025561A1
公开(公告)日：2016-01-28
申请号：US14807286
申请日：2015-07-23
Applicant: NEC Laboratories America, Inc.
Abstract: A spectroscopy system and method includes illuminating a target with a wideband light pulse that includes an entire testing wavelength spectrum. The light pulse is transformed with a dispersive medium to introduce a frequency-based time delay to the light pulse after the light pulse has interacted with a target. The dispersed light pulse is converted to a time-domain electrical signal with a photodiode. The time-domain electrical signal is converted into a spectral profile of the target.
Abstract translation: 光谱系统和方法包括用包括整个测试波长光谱的宽带光脉冲照射目标。 用分散介质转换光脉冲，以在光脉冲与目标相互作用之后，将光脉冲引入基于频率的时间延迟。 分散的光脉冲被转换成具有光电二极管的时域电信号。 时域电信号被转换成目标的光谱分布。
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公开(公告)号：US11881688B2
公开(公告)日：2024-01-23
申请号：US17717088
申请日：2022-04-10
Applicant: NEC Laboratories America, Inc.
Inventor： Yangmin Ding , Sarper Ozharar , Yuandu Xu , Yue Tian , Ting Wang
CPC classification number: H02G1/02 , G01D5/35354 , G01S19/01
Abstract: Systems and methods for performing the dynamic anomaly localization of utility pole aerial/suspended/supported wires/cables by distributed fiber optic sensing. In sharp contrast to the prior art, our inventive systems and methods according to aspects of the present disclosure advantageously identify a “location region” on a utility pole supporting an affected wire/cable, thereby permitting the identification and reporting of service personnel that are uniquely responsible for responding to such anomalous condition(s).
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23.发明授权公开(公告)号：US11754612B2
公开(公告)日：2023-09-12
申请号：US17719322
申请日：2022-04-12
Applicant: NEC Laboratories America, Inc.
Inventor： Yangmin Ding , Sarper Ozharar , Yue Tian , Ting Wang
CPC classification number: G01R31/085 , G01H9/004
Abstract: Distributed fiber optic sensing (DFOS) systems and methods for monitoring electrical power distribution transformers and locating failing/failed/malfunctioning transformers from humming signals indicative of a transformer's operational integrity and are advantageously detected/analyzed via DFOS mechanisms.
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公开(公告)号：US11710346B2
公开(公告)日：2023-07-25
申请号：US17330832
申请日：2021-05-26
Applicant: NEC Laboratories America, Inc.
Inventor： Manmohan Chandraker , Ting Wang , Xiang Xu , Francesco Pittaluga , Gaurav Sharma , Yi-Hsuan Tsai , Masoud Faraki , Yuheng Chen , Yue Tian , Ming-Fang Huang , Jian Fang
IPC: G06V40/16 , G06T3/00 , G06V10/774
CPC classification number: G06V40/172 , G06T3/0006 , G06V10/774 , G06V40/171
Abstract: Methods and systems for training a neural network include generate an image of a mask. A copy of an image is generated from an original set of training data. The copy is altered to add the image of a mask to a face detected within the copy. An augmented set of training data is generated that includes the original set of training data and the altered copy. A neural network model is trained to recognize masked faces using the augmented set of training data.
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25.发明授权公开(公告)号：US11698290B2
公开(公告)日：2023-07-11
申请号：US17714091
申请日：2022-04-05
Applicant: NEC Laboratories America, Inc.
Inventor： Shaobo Han , Yue Tian , Sarper Ozharar , Yangmin Ding , Ting Wang
IPC: G01H9/00
CPC classification number: G01H9/004
Abstract: Systems and methods for operating a distributed fiber optic sensing (DFOS)/distributed acoustic sensing (DAS) system include a length of optical sensing fiber suspended aerially by a plurality of utility poles and in optical communication with a DFOS interrogator/analyzer. The method includes operating the DFOS/DAS system while manually exciting more than one of the poles to obtain frequency response(s) of the excited poles; contrastively training a convolutional neural network (CNN) with the frequency responses obtained; classifying the utility poles using the contrastively trained CNN; and generating a profile map of the excited poles indicative of the classified utility poles.
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Patent Agency Ranking
公开(公告)号：US11686909B2
公开(公告)日：2023-06-27
申请号：US17228577
申请日：2021-04-12
Applicant: NEC Laboratories America, Inc.
Inventor： Yue Tian
CPC classification number: G02B6/4401 , G01S5/16 , H04B10/27 , G02B2006/12138
Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) distributed acoustic sensing (DAS) systems, methods, and structures that advantageously provide the localization of utility poles along a route of fiber optic cable.
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公开(公告)号：US20150233761A1
公开(公告)日：2015-08-20
申请号：US14615525
申请日：2015-02-06
Applicant: NEC Laboratories America, Inc.
CPC classification number: G01J3/0218 , G01J3/10 , G01N21/255 , G01N2201/06113 , G01N2201/062 , G01N2201/08
Abstract: Active components in an optical spectroscopy based sensor are moved to a remote site and the light is guided between the remote site and the sensing site through optical fibers.
Abstract translation: 基于光谱学的传感器中的有源元件被移动到远程位置，并且通过光纤在远程位置和感测位置之间引导光。
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28.发明授权公开(公告)号：US12106664B2
公开(公告)日：2024-10-01
申请号：US17968265
申请日：2022-10-18
Applicant: NEC Laboratories America, Inc.
Inventor： Yangmin Ding , Yue Tian , Sarper Ozharar , Ting Wang
CPC classification number: G08G1/04 , G01V1/001 , G01V1/226 , G01V1/30 , G08G1/0104
Abstract: Aspects of the present disclosure describe dynamic road traffic noise mapping using DFOS over a telecommunications network that enables mapping of road traffic-induced noise at any observer location. DFOS is used to obtain instant traffic data including vehicle speed, volume, and vehicle types, based on vibration and acoustic signal along the length of a sensing fiber along with location information. A sound pressure level at a point of interest is determined, and traffic data associated with such point is incorporated into a reference noise emission database and a wave propagation theory for total sound pressure level prediction and mapping. Real-time wind speed using DFOS—such as distributed acoustic sensing (DAS)—is obtained to provide sound pressure adjustment due to the wind speed.
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29.发明授权公开(公告)号：US11619542B2
公开(公告)日：2023-04-04
申请号：US17228675
申请日：2021-04-12
Applicant: NEC Laboratories America, Inc.
Inventor： Sarper Ozharar , Yue Tian , Yangmin Ding , Ting Wang
IPC: G01H9/00
Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS)—distributed acoustic sensing (DAS) based systems, methods, and structures that advantageously enable and/or facilitate the determination of natural frequency(ies) of civil infrastructures.
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公开(公告)号：US11467037B2
公开(公告)日：2022-10-11
申请号：US16838212
申请日：2020-04-02
Applicant: NEC Laboratories America, Inc.
Abstract: Aspects of the present disclosure describe rapid temperature measurement by wavelength modulation spectroscopy (WMS) that determines gas temperature from 2ƒ signals from two absorption lines by WMS methodologies even when the gas concentration is sufficiently high to saturate optical absorptions. In sharp contrast to the prior art, rapid temperature measurement by WMS according to aspects of the present disclosure employs both a 2ƒ signal ratio and gas concentration determined from the 2ƒ signal.
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