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公开(公告)号:US12160090B2
公开(公告)日:2024-12-03
申请号:US18492902
申请日:2023-10-24
Applicant: NEC Laboratories America, Inc.
Inventor: Yangmin Ding , Yuanda Xu , Sarper Ozharar , Yue Tian , Ting Wang
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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公开(公告)号:US11733070B2
公开(公告)日:2023-08-22
申请号:US17684348
申请日:2022-03-01
Applicant: NEC LABORATORIES AMERICA, INC
Inventor: Yangmin Ding , Sarper Ozharar , Yue Tian , Ting Wang , Yuanda Xu
CPC classification number: G01D5/35358 , G01H9/004
Abstract: Distributed fiber optic sensing (DFOS)/distributed acoustic sensing (DAS) techniques coupled with frequency domain decomposition (FDD) are employed to determine the presence of 120 HZ operating power frequency to determine when street lights are energized and on thereby providing continuous status monitoring of the operational status of street lights and locating affected street lights at a particular utility pole location.
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公开(公告)号:US20250146861A1
公开(公告)日:2025-05-08
申请号:US18917504
申请日:2024-10-16
Applicant: NEC Laboratories America, Inc.
Inventor: Zhuocheng Jiang , Yue Tian , Yangmin Ding , Sarper Ozharar , Yanchao Wang , Ting Wang
Abstract: Systems and methods include collecting vibration data along an optical fiber cable using distributed acoustic sensing (DAS). The collected vibration data is preprocessed to separate the vibration data into at least two mixtures. The at least two mixtures are combined into a mixture of mixtures. The mixture of mixtures is separated into a plurality of estimated source signals using a separation model. The separation model is trained using an unsupervised loss computed between the estimated source signals and the at least two mixtures.
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4.
公开(公告)号:US11543286B2
公开(公告)日:2023-01-03
申请号:US17227328
申请日:2021-04-11
Applicant: NEC Laboratories America, Inc.
Inventor: Sarper Ozharar , Yue Tian , Yangmin Ding , Ting Wang
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 monitoring of civil infrastructures via acoustic wave speed measurements.
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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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6.
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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7.
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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公开(公告)号:US20250149887A1
公开(公告)日:2025-05-08
申请号:US18937680
申请日:2024-11-05
Applicant: NEC Laboratories America, Inc.
Inventor: Yangmin Ding , Ting Wang
Abstract: Systems and methods for a risk mitigation system for electrical power grids. To mitigate risks such as natural destructive forces, collected risk data and EPG data can be fused to obtain fused data. The vulnerability metric and fragility metric of the EPG based on risk profiles generated from the fused data can be predicted with a physics-informed neural network (PINN) trained with the fused data. EPG threat metrics can be developed by integrating the vulnerability metric, fragility metric, and the risk profiles into an integrated score that determines the probability of failure of the EPG caused by natural destructive forces. The present embodiments can perform a corrective action with an automated helper to mitigate the risks to the EPG caused by the natural destructive forces determined from the EPG threat metrics.
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9.
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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10.
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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