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公开(公告)号：US20240127681A1
公开(公告)日：2024-04-18
申请号：US18485211
申请日：2023-10-11
Applicant: NEC Laboratories America, Inc.
Inventor： Sarper OZHARAR , Yue TIAN , Yangmin DING , Ting WANG
Abstract: A solar powered, self-contained DFOS extender that includes a wide-angle camera and a microphone. The DFOS extender monitors the perimeter constantly or at predetermined time intervals both visually and acoustically. It analyses these signals and if an alarming event is detected (such as an animal, a human, a car, or a truck seen or heard), then the DFOS extender generates a coded vibration via its in-built acoustic modem. These coded vibrations are detected by the fiber and an event log is generated. Consequently, a trespasser or false alarms (animals) are detected before they are within detectable distance of the underground DFOS optical sensor fiber. Advantageously, our DFOS extender can be placed in critical locations along a border where an increased detection range is desired and may later be relocated/reinstalled at other locations as well.
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公开(公告)号：US20230412266A1
公开(公告)日：2023-12-21
申请号：US18319457
申请日：2023-05-17
Applicant: NEC Laboratories America, Inc.
Inventor： Christopher WHITE , Jian FANG , Sarper OZHARAR , Ting WANG
IPC: H04B10/071 , H04B10/2575
CPC classification number: H04B10/071 , H04B11/00 , H04B10/25756
Abstract: A method for time synchronization using distributed fiber optic sensing (DFOS) that employs several trusted time beacons that are attached to the DFOS sensing fiber which in turn is connected to the DFOS interrogator. The beacons transmit their signal via two different mediums, (1) wirelessly to sensor nodes in the coverage area, and (2) through vibrations on fiber to the DFOS/DAS system located at a trusted area such as the central office. Wireless broadcast to nearby sensors includes a timestamp and beacon ID. All the sensors in the field use one of the beacons in their vicinity (the one with the strongest signal) as their time reference and send the data back with the corresponding beacon index.
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33.发明公开公开(公告)号：US20230366725A1
公开(公告)日：2023-11-16
申请号：US18316199
申请日：2023-05-11
Applicant: NEC Laboratories America, Inc.
Inventor： Yue TIAN , Yangmin DING , Sarper OZHARAR , Shaobo HAN , Ting WANG , Jiatong LI , Zuocheng JIANG , Yuanda XU
Abstract: A distributed fiber optic sensing (DFOS) / distributed acoustic sensing (DAS) system and method employing a fiber optic sensor cable that collects vibrational data of individual utility poles suspending the fiber optic sensor cable and stores the vibrational data in a central office (CO). Machine learning (ML) models are developed, trained, and utilized to analyze vibrational features of the utility poles and determine their integrity. Additionally, DFOS / DAS systems and methods according to the present disclosure determine the location(s) of fiber coils that exist along a length of a fiber optic sensor cable.
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34.发明公开公开(公告)号：US20230366703A1
公开(公告)日：2023-11-16
申请号：US18316208
申请日：2023-05-11
Applicant: NEC Laboratories America, Inc.
Inventor： Yue TIAN , Yangmin DING , Sarper OZHARAR , Shaobo HAN , Ting WANG , Jiatong LI , Zuocheng JIANG , Yuanda XU
CPC classification number: G01D5/35358 , G01H9/004 , G06N20/00
Abstract: A distributed fiber optic sensing (DFOS)/distributed acoustic sensing (DAS) system and method employing a fiber optic sensor cable that collects vibrational data of individual utility poles suspending the fiber optic sensor cable and stores the vibrational data in a central office (CO). Machine learning (ML) models are developed, trained, and utilized to analyze vibrational features of the utility poles and determine their integrity. Additionally, DFOS/DAS systems and methods according to the present disclosure determine the location(s) of fiber coils that exist along a length of a fiber optic sensor cable.
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35.发明申请公开(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.
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Patent Agency Ranking
36.发明申请公开(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
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.
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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.
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38.发明申请公开(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
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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39.发明申请公开(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
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.
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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
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.
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