公开(公告)号：US20220263579A1

公开(公告)日：2022-08-18

申请号：US17580572

申请日：2022-01-20

Applicant: NEC Laboratories America, Inc.

Inventor： Philip JI ,  Ting WANG ,  Zilong YE

IPC: H04B10/272

Abstract: Aspects of the present disclosure describe a method of placement of sensors for DFOS systems, methods, and structures that advantageously employ concurrent sensing. In sharp contrast to the prior art, our inventive method—a heuristic method based on the Explore-and-Pick (EnP) algorithm, which we call a modified EnP (mEnP) method—includes two procedures. The first procedure of our mEnP method explores all possible sensing fiber routes (both linear and star-like routes) for each node in the given network. The second procedure applies a modified greedy algorithm for minimum set cover to select the minimum set of DFOS assignment to fully cover all the links in the given network.

公开(公告)号：US20220149932A1

公开(公告)日：2022-05-12

申请号：US17496722

申请日：2021-10-07

Applicant: NEC Laboratories America, Inc.

Inventor： Philip JI ,  Ting WANG ,  Zilong YE

IPC: H04B10/032

Abstract: Aspects of the present disclosure describe distributed fiber optic sensor systems, methods, and structures that advantageously enable/provide for the proper placement/assignment of sensors in the DFOS network to provide for high reliability, fault tolerant operation that survives fiber failures.

公开(公告)号：US20220065690A1

公开(公告)日：2022-03-03

申请号：US17410820

申请日：2021-08-24

Applicant: NEC Laboratories America, Inc.

Inventor： Shaobo HAN ,  Ming-Fang HUANG ,  Yuheng CHEN ,  Milad SALEMI ,  Ting WANG ,  Yoshiaki AONO ,  Glenn WELLBROCK ,  Tiejun XIA

IPC: G01H9/00 ,  G06E3/00 ,  G01D5/353

Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously enable anomaly detection resulting from construction—or other activity based on image processing that may advantageously detect/notify/prevent damage to a fiber optic network infrastructure before such damage occurs.

公开(公告)号：US20210356332A1

公开(公告)日：2021-11-18

申请号：US17321464

申请日：2021-05-16

Applicant: NEC Laboratories America, Inc.

Inventor： Jian FANG ,  Ting WANG

IPC: G01K11/322 ,  G01D5/353 ,  G01K11/324

Abstract: Aspects of the present disclosure describe systems, methods, and structures for distributed temperature sensing that employ joint wavelet denoising to achieve desirable signal-to-noise ratio(s) over extended sensor fiber distances.

公开(公告)号：US20210318162A1

公开(公告)日：2021-10-14

申请号：US17225013

申请日：2021-04-07

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang HU ,  Ting WANG

IPC: G01H9/00

Abstract: Distributed fiber optic sensing systems (DFOS) methods, and structures that employ DVS/DAS point sensors and a two-stage processing methodology/structure that advantageously enable point sensors to send sensor data at any time—thereby providing significant processing advantages over the prior art.

公开(公告)号：US20210314681A1

公开(公告)日：2021-10-07

申请号：US17221820

申请日：2021-04-04

Applicant: NEC LABORATORIES AMERICA, INC

Inventor： Ming-Fang HUANG ,  Ting WANG

IPC: H04Q11/00

Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously utilize existing telecommunications facilities that serve as not only to convey telecommunications traffic—but as a sensor medium providing useful sensory information. In sharp contrast to the prior art—a DFOS system when so deployed may advantageously exploit network topologies and optical switches to provide novel sensing features including the detection of environmental events including acoustic, temperature, and vibrational events that may be indicative of societal activity including traffic and/or emergency events.

公开(公告)号：US20210311186A1

公开(公告)日：2021-10-07

申请号：US17195538

申请日：2021-03-08

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Ting WANG ,  Hansi LIU

IPC: G01S15/42 ,  G01V1/18 ,  G01V1/30 ,  G01D5/353

Abstract: Aspects of the present disclosure describe distributed fiber optic sensing systems, methods, and structures that advantageously are employed to determine the location and depth of underground fiber-optic facilities that may be carrying telecommunications traffic.

公开(公告)号：US20210258074A1

公开(公告)日：2021-08-19

申请号：US17147379

申请日：2021-01-12

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Ting WANG

IPC: H04B10/25 ,  H04W84/18 ,  H04W4/02 ,  H04W4/90 ,  H04L29/08

Abstract: Aspects of the present disclosure describe systems, methods and structures providing detection and localization of disaster-related indoor events via hybrid ethernet/optical fiber cable.

公开(公告)号：US20210180997A1

公开(公告)日：2021-06-17

申请号：US17118529

申请日：2020-12-10

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Hansi LIU ,  Ting WANG

IPC: G01D5/353 ,  G01H9/00

Abstract: Aspects of the present disclosure describe systems, methods and structures providing non-destructive localization of underground optical fiber cables utilizing distributed fiber optic sensing (DFOS) and time difference of arrival techniques.

公开(公告)号：US20200005036A1

公开(公告)日：2020-01-02

申请号：US16455009

申请日：2019-06-27

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Nan JI ,  Shuji MURAKAMI ,  Giovanni MILIONE ,  Ting WANG

IPC: G06K9/00 ,  G01N23/203 ,  G06T5/00 ,  G06K9/40

Abstract: Aspects of the present disclosure describe systems, methods and structures employing time-space de-noising for distributed sensor.