公开(公告)号：US20230130862A1

公开(公告)日：2023-04-27

申请号：US17968997

申请日：2022-10-19

Applicant: NEC Laboratories America, Inc.

Inventor： Sarper OZHARAR ,  Yue TIAN ,  Ting WANG ,  Yangmin DING

IPC: G01H9/00 ,  G01S15/89 ,  G01F23/296 ,  G01N23/203 ,  G01S7/52

Abstract: Aspects of the present disclosure describe snow / water level detection using distributed fiber optic sensing / distributed acoustic sensing (DFOS/DAS) and an integrated ultrasonic device that advantageously operates over existing optical telecommunications facilities carrying live telecommunications traffic - or optical facilities deployed specifically for such detection. DFOS/DAS monitoring of snow / water level advantageously monitors large areas with high sensitivity while exhibiting robustness to changing environmental conditions and employs a remote (utility pole or other mounting) mounted ultrasonic sensor/transducer that provides snow / water level data in real-time as a coded vibrational signal.

公开(公告)号：US20230029221A1

公开(公告)日：2023-01-26

申请号：US17869785

申请日：2022-07-20

Applicant: NEC Laboratories America, Inc.

Inventor： Yangmin DING ,  Sarper OZHARAR ,  Yue TIAN ,  Ting WANG ,  Yuandu XU

IPC: G01D5/353 ,  G01H9/00

Abstract: Systems, and methods for monitoring galloping of overhead transmission lines using distributed fiber optic sensing (DFOS) in combination with frequency domain decomposition (FDD) (frequency domain) algorithms/methods. A DFOS interrogator/analyzer is used to collect real-time data for pre-processing. The pre-processed data is further processed by processing algorithms, which provide results to a graphical user interface or other reporting mechanisms that provide real-time monitoring, alarming, and reporting of the galloping status of the overhead transmission lines.

公开(公告)号：US20230028676A1

公开(公告)日：2023-01-26

申请号：US17871816

申请日：2022-07-22

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Shaobo HAN ,  Ting WANG ,  Yuheng CHEN ,  Yangmin DING ,  Yue TIAN ,  Sarper OZHARAR

IPC: G01H9/00

Abstract: Systems and methods for determining fiber optic facility (cable) location using distributed fiber optic sensing (DFOS) and sequence pattern matching of vibration excitation signals applied to a sensor fiber. The use of sequence pattern matching with unique pattern codes allow for the precise determination of location and length of deployed fiber cable while exhibiting an immunity from environmental vibrations proximate to the fiber. As a result improved measurements are realized and false alarms are eliminated.

公开(公告)号：US20220334165A1

公开(公告)日：2022-10-20

申请号：US17719322

申请日：2022-04-12

Applicant: NEC Laboratories America, Inc.

Inventor： Yangmin DING ,  Sarper OZHARAR ,  Yue TIAN ,  Ting WANG

IPC: G01R31/08 ,  G01H9/00

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.

公开(公告)号：US20220326112A1

公开(公告)日：2022-10-13

申请号：US17715002

申请日：2022-04-06

Applicant: NEC Laboratories America, Inc.

Inventor： Yue TIAN ,  Sarper OZHARAR ,  Yangmin DING ,  Shaobo HAN ,  Ting WANG

IPC: G01M7/08 ,  G01D5/353 ,  G01H9/00

Abstract: A system and method to assess utility pole integrity, by using existing telecom fiber optic cable as a sensor cable, instant mechanical impact on the pole(s), DAS technology and a machine learning model. An instant mechanical impact creates a vibration event on the optical fiber cable mounted/suspended on a target pole, which is detected/recorded by DAS. By applying a machine learning model on the DAS signals, the target pole's integrity condition is obtained.

公开(公告)号：US20220120925A1

公开(公告)日：2022-04-21

申请号：US17504365

申请日：2021-10-18

Applicant: NEC Laboratories America, Inc.

Inventor： Yue TIAN ,  Shaobo HAN ,  Sarper OZHARAR ,  Yangmin DING ,  You LU

IPC: G01V1/22 ,  G01D5/353 ,  G06N3/04

Abstract: Aspects of the present disclosure describe the localization of a utility pole by distributed fiber sensing of aerial fiber cable suspended from the utility pole.

公开(公告)号：US20210318163A1

公开(公告)日：2021-10-14

申请号：US17227313

申请日：2021-04-10

Applicant: NEC Laboratories America, Inc.

Inventor： Yangmin DING ,  Yue TIAN ,  Sarper Ozharar ,  Ting Wang

IPC: G01H9/00 ,  G08B21/18

Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously enable and/or facilitate the continuous monitoring and identification of damaged utility poles by employing a DFOS distributed acoustic sensing (DAS) methodology in conjunction with a finite element analysis and operational modal analysis. Of particular advantage and in further contrast to the prior art, systems, methods, and structures according to aspects of the present disclosure utilize existing optical fiber supported/suspended by the utility poles as a sensing medium for the DFOS/DAS operation.