Nec Corporation

Nec Laboratories America, Inc.

Verizon Patent and Licensing Inc.

Other

Nec C Orporation

Yoshiaki Aono

Ting Wang

Philip N Ji

Yukihide Yoda

Ankitkumar N Patel

Junqiang Nochur Hu

Koji Asahi

Dayou Qian

Yoshinori Kitahara

Naoto Ogura

Tadayuki Iwano

Daisuke Taniguchi

Tiejun J Xia

Glenn A Wellbrock

Satoru Ishii

Ezra Ip

Ming-Fang Huang

Kazuo Takagi

Tsutomu Tajima

Yoshinobu Ooto

Yue-Kai Huang

Eduardo F Mateo

Jason P Jue

Kouichi Suzuki

Hiromitsu Sugahara

Yuusuke Sakurai

An optical fiber sensing system according to the present disclosure includes: an optical fiber network () configured to detect first sensing information related to a first monitoring target and second sensing information related to a second monitoring target; a reception unit () configured to receive an optical signal from the optical fiber network (); a specification unit () configured to specify a first monitoring target based on first sensing information superimposed on the optical signal and specify a second monitoring target based on second sensing information superimposed on the optical signal, and a provision unit () configured to provide information related to the first monitoring target and information related to the second monitoring target specified by the specification unit () for a service providing destination.

Optical fiber sensing system, optical fiber sensing method, and optical fiber sensing apparatus

In order to provide a detection device that is capable of detecting the submersion of a fiber-optic cable in water before water penetrates the interior of the fiber-optic cable, a detection systemcomprises: a vibration-detecting fiber-optic cable; a receiving meansthat receives an optical signal including vibrations detected by the fiber-optic cable; and a detection meansthat detects submersion of the fiber-optic cable in water on the basis of the vibrations included in the optical signal.

Detection system, detection device, and detection method

An optical fiber sensing system according to this disclosure includes: a first optical fiber network (A) configured to detect first sensing information about a monitoring target; a second optical fiber network (B) configured to detect second sensing information about the monitoring target; a first reception unit (A) configured to receive a first light signal from the first optical fiber network (A); a second reception unit (B) configured to receive a second light signal from the second optical fiber network (B); and an identification unit () configured to identify the monitoring target, based on the first sensing information included in the first light signal, and the second sensing information included in the second light signal.

An optical fiber sensing system and method assessing that an abnormality has occurred when a vibration pattern of an optical signal output from an optical fiber, that detects a vibration, is not already known. When the vibration pattern of the optical signal has not occurred in accordance with a predetermined event, and the vibration pattern is an abnormal vibration pattern, assessing that the abnormality has occurred at a position at which the optical fiber detected the vibration.

Abnormality assessment device using optical fiber sensing system

A monitoring system according to the present disclosure includes an optical fiber () laid in a monitoring area; an authenticating unit () configured to authenticate a person or a vehicle passing through a gate (G) for entering the monitoring area; an optical fiber sensing unit () configured to acquire, based on an optical signal received from the optical fiber (), a parameter having a unique pattern corresponding to the pattern of action of the authenticated person or vehicle; and an analyzing unit () configured to identify the pattern of action of the authenticated person or vehicle based on the unique pattern of the parameter.

Monitoring system, monitoring device, monitoring method, and non-transitory computer-readable medium

An optical fiber sensing system according to the present disclosure comprises: an optical fiber () that is laid in a pipe (); a reception unit () configured to receive, from the optical fiber (), an optical signal superimposed with vibration detected by the optical fiber (); and an assessment unit () configured to extract a vibration pattern of the vibration detected by the optical fiber () from the optical signal and determine the degradation state of the pipe () based on the extracted vibration pattern.

Optical fiber sensing system, optical fiber sensing device, and method for detecting pipe deterioration

A monitoring system according to the present disclosure includes an optical fiber () laid on a ground or a seabed, an optical fiber sensing unit () configured to receive an optical signal from the optical fiber () and detect a vibration produced in the ground or the seabed based on the optical signal, and an analyzing unit () configured to identify a natural phenomenon that has caused the detected vibration based on a unique pattern of the detected vibration.

A monitoring system according to the present disclosure includes: an optical fiber () configured to sense a peripheral environmental state, a monitor's terminal (), a receiving unit () configured to receive an optical signal containing information indicating the environmental state from the optical fiber (), a detecting unit () configured to detect at least one of an accident and an incident, based on the information indicating the environmental state, being included in the optical signal, and a broadcasting unit () configured to broadcast that the accident or the incident has occurred to the monitor's terminal () when the detecting unit () determines that the accident or the incident has occurred.

Monitoring system, monitoring device, and monitoring method

A utility pole deterioration detection system includes a cable () disposed in a utility pole (), the cable () containing a communication optical fiber, a receiving unit () configured to receive an optical signal containing a pattern that changes according to a deterioration state of the utility pole () from at least one optical fiber contained in the cable (), and a detection unit () configured to detect a deterioration state of the utility pole () based on the pattern.

Utility pole deterioration detection system, utility pole deterioration detection apparatus, utility pole deterioration detection method, and non-transitory computer readable medium

An optical transmission apparatus (_) according to the present invention includes a first transmission unit (_) that transmits a first optical transmission signal (_), a second transmission unit (_) that transmits a second optical transmission signal (_), and an output unit that outputs, when the first optical transmission signal (_) and the second optical transmission signal (_) share a set of information, both the first optical transmission signal (_) and the second optical transmission signal (_) to a first path (_) and outputs, when the first optical transmission signal (_) and the second optical transmission signal (_) do not share the set of information, one of the first optical transmission signal (_) and the second optical transmission signal (_) to a second path (_).

Optical transmission apparatus, optical reception apparatus, optical communication apparatus, optical communication system, and methods of controlling them

A device may receive, from a fiber sensor device, sensing data associated with a fiber optic cable, the sensing data being produced by an activity that poses a threat of damage to the fiber optic cable, and the sensing data identifying: amplitudes of vibration signals, frequencies of the vibration signals, patterns of the vibration signals, times associated with the vibration signals, and locations along the fiber optic cable associated with the vibration signals. The device may process, with a machine learning model, the sensing data to determine a threat level of the activity to the fiber optic cable, the machine learning model having been trained based on historical information regarding detected vibrations, historical information regarding sources of the detected vibrations, and historical information regarding threat levels to the fiber optic cable. The device may perform one or more actions based on the threat level to the fiber optic cable.

Systems and methods for utilizing machine learning to minimize a potential of damage to fiber optic cables

A utility pole location specifying system according to the present disclosure includes a cable () containing a communication optical fiber disposed in a utility pole (), a receiving unit () configured to receive an optical signal containing a characteristic pattern of the utility pole () from at least one communication optical fiber contained in the cable (), and a specifying unit () configured to specify a location of the utility pole () based on the characteristic pattern.

Utility pole location specifying system, utility pole location specifying apparatus, utility pole location specifying method, and non-transitory computer readable medium

A method of providing a hybrid distributed fiber optic sensing system (DFOS) that extends an existing fiber optic telecommunications network thereby providing that existing fiber optic telecommunications network with DFOS capabilities. The method provides a length of fiber optic cable, wherein said fiber optic cable conveys communications traffic; provides a DFOS interrogator system in optical communication with the communications fiber optic cable; extends the length of communications fiber optic cable with first and second lengths of fiber optic sensory cable, and operates the DFOS interrogator system such that first sensory data is generated in the first length of fiber optic sensory cable and second sensory data is generated in the second length of fiber optic sensory cable and conveyed to the DFOS interrogator system via the communications fiber optic cable, wherein the first type of sensory data and the second type of sensory data is a type selected from the group consisting of acoustic data, temperature data, and vibration data and the first type of sensory data is not the same type as the second type of sensory data.

Method for providing a hybrid distributed fiber optic sensing system with improved connection to existing deployed fiber infrastructure

Optical transmission apparatus, optical reception apparatus, optical communications apparatus, optical communication system, and methods of controlling them

A state specifying system according to the present disclosure includes a cable () disposed in a utility pole (), the cable () containing a communication optical fiber, a receiving unit () configured to receive an optical signal from at least one optical fiber contained in the cable (), and a specifying unit () configured to specify a state of the utility pole () or an environmental state around the utility pole () corresponding to a pattern of the optical signal received by the receiving unit ().

Growing community of inventors

Tokyo, Japan

Yoshiaki Aono