# US 12,009,855 B2 · Monitoring system, monitoring device, and monitoring method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,009,855 B2 - Document ID: US12009855B2 - Status: Granted - Kind: B2 - Application number: 17/799,378 - Filed: 2020-03-04 - Published: 2023-03-02 - Granted: 2024-06-11 - Earliest claimed: 2020-03-04 - Assignees: NEC Corporation - Applicants: NEC Corporation - Inventors: Yoshinori Kitahara; Yoshiaki Aono; Yuusuke Sakurai; Tadayuki Iwano - Web page: https://patentgrep.com/patent/US12009855B2 ## CPC - H04B 10/0791: {Fault location on the transmission path} - G01H 9/004: {using fibre optic sensors (light guides per se G02B6/00, acousto-optical devices specially adapted for gating or modulating in optical wave guides G02F1/125)} - G08B 17/00: Fire alarms; Alarms responsive to explosion - G08B 21/24: Reminder alarms, e.g. anti-loss alarms - H04B: TRANSMISSION - G01H: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS ## Abstract A monitoring system according to the present disclosure includes: an optical fiber (10) configured to sense a peripheral environmental state, a monitor's terminal (40), a receiving unit (20) configured to receive an optical signal containing information indicating the environmental state from the optical fiber (10), a detecting unit (32) 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 (33) configured to broadcast that the accident or the incident has occurred to the monitor's terminal (40) when the detecting unit (32) determines that the accident or the incident has occurred. ## Claims ### Claim 1 A monitoring system comprising: a receiving unit configured to receive, from an optical fiber, an optical signal containing information indicating an environmental state; a detecting unit configured to detect at least one of an accident or an incident and a location of the accident or the incident based on the information indicating the environmental state; and a broadcasting unit configured to, in response to the detecting unit detecting the accident or the incident: broadcast that the accident or the incident has occurred to an external terminal; and notify the external terminal of the location of the accident or the incident. ### Claim 2 (depends on 1) The monitoring system of claim 1, wherein the receiving unit is configured to connect to the optical fiber. ### Claim 3 (depends on 1) The monitoring system of claim 1, wherein the broadcasting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, determine the external terminal according to the type of the accident or the incident, perform the broadcasting, and notify the type of the accident or the incident, to the determined external terminal. ### Claim 4 (depends on 1) The monitoring system of claim 1, wherein the detecting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform at least one of identifying a time of occurrence of the accident or the incident and identifying a location of occurrence of the accident or the incident, based on the optical signal, and wherein the broadcasting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform the broadcasting and notify at least one of the location of occurrence and the time of occurrence of the accident or the incident, to the external terminal. ### Claim 5 (depends on 1) The monitoring system of claim 1, wherein the broadcasting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform the broadcasting to the external terminal and display a screen indicating the location of occurrence of the accident or the incident superimposed on the map on a display unit. ### Claim 6 (depends on 5) The monitoring system of claim 5, wherein the detecting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform at least one of identifying a time of occurrence of the accident or the incident, based on the optical signal, and identifying a type of the accident or the incident, based on the information indicating the environmental state, and wherein the broadcasting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform the broadcasting to the external terminal and display the screen indicating at least one of the type and the time of occurrence of the accident or the incident further superimposed on the map on the display unit. ### Claim 7 A monitoring device comprising: an acquiring unit configured to acquire information indicating an environmental state in a periphery of an optical fiber based on an optical signal; a detecting unit configured to detect at least one of an accident or an incident and a location of the accident or the incident based on the information indicating the environmental state; and a broadcasting unit configured to, in response to the detecting unit detecting the accident or the incident: broadcast that the accident or the incident has occurred to an external terminal; and notify the external terminal of the location of the accident or the incident. ### Claim 8 (depends on 7) The monitoring device of claim 7, wherein the receiving unit is configured to connect to the optical fiber. ### Claim 9 (depends on 7) The monitoring device of claim 7 wherein the broadcasting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, determine the external terminal according to the type of the accident or the incident, perform the broadcasting, and notify the type of the accident or the incident, to the determined external terminal. ### Claim 10 (depends on 7) The monitoring system of claim 7, wherein the detecting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform at least one of identifying a time of occurrence of the accident or the incident and identifying a location of occurrence of the accident or the incident, based on the optical signal, and wherein the broadcasting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform the broadcasting and notify at least one of the location of occurrence and the time of occurrence of the accident or the incident, to the external terminal. ### Claim 11 (depends on 7) The monitoring system of claim 7, wherein the broadcasting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform the broadcasting to the external terminal and display a screen indicating the location of occurrence of the accident or the incident superimposed on the map on a display unit. ### Claim 12 (depends on 11) The monitoring system of claim 11, wherein the detecting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform at least one of identifying a time of occurrence of the accident or the incident, based on the optical signal, and identifying a type of the accident or the incident, based on the information indicating the environmental state, and wherein the broadcasting unit is configured to, if the detecting unit determines that the accident or the incident has occurred, perform the broadcasting to the external terminal and display the screen indicating at least one of the type and the time of occurrence of the accident or the incident further superimposed on the map on the display unit. ### Claim 13 A monitoring method comprising: acquiring, using an acquiring unit, information indicating an environmental state in a periphery of an optical fiber based on an optical signal; detecting, using a detecting unit, at least one of an accident or an incident and a location of the accident or the incident based on the information indicating the environmental state; and in response to detecting the accident or the incident: broadcasting, using a broadcasting unit, that the accident or the incident has occurred to an external terminal; and notifying, using the broadcasting unit, the external terminal of the location of the accident or the incident. ### Claim 14 (depends on 13) The monitoring method according to claim 13, wherein the detecting includes performing at least one of identifying a time of occurrence of the accident or the incident, based on the optical signal, and identifying a type of the accident or the incident, based on the information indicating the environmental state, if it is determined that the accident or the incident has occurred, and wherein the broadcasting includes performing the broadcasting to the external terminal and displaying the screen indicating at least one of the type and the time of occurrence of the accident or the incident further superimposed on the map, on a display unit, if it is determined that the accident or the incident has occurred in the detecting.