JPWO2021176581A1 - - Google Patents
Info
- Publication number
- JPWO2021176581A1 JPWO2021176581A1 JP2022504830A JP2022504830A JPWO2021176581A1 JP WO2021176581 A1 JPWO2021176581 A1 JP WO2021176581A1 JP 2022504830 A JP2022504830 A JP 2022504830A JP 2022504830 A JP2022504830 A JP 2022504830A JP WO2021176581 A1 JPWO2021176581 A1 JP WO2021176581A1
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0791—Fault location on the transmission path
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Emergency Alarm Devices (AREA)
- Fire Alarms (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2020/009053 WO2021176581A1 (ja) | 2020-03-04 | 2020-03-04 | 監視システム、監視装置、及び監視方法 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2021176581A1 true JPWO2021176581A1 (https=) | 2021-09-10 |
| JPWO2021176581A5 JPWO2021176581A5 (https=) | 2022-10-19 |
| JP7533566B2 JP7533566B2 (ja) | 2024-08-14 |
Family
ID=77613229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022504830A Active JP7533566B2 (ja) | 2020-03-04 | 2020-03-04 | 監視システム、監視装置、及び監視方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US12009855B2 (https=) |
| JP (1) | JP7533566B2 (https=) |
| WO (1) | WO2021176581A1 (https=) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11777598B2 (en) * | 2021-06-21 | 2023-10-03 | Ciena Corporation | Utilizing polarization characteristics to detect vibrations in optical fibers |
| JP7750373B2 (ja) * | 2022-02-21 | 2025-10-07 | 日本電気株式会社 | 信号処理装置、及び方法 |
| CN118172914B (zh) * | 2024-05-16 | 2024-07-30 | 三峡金沙江川云水电开发有限公司 | 一种排水洞入侵事件监测预警方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009037438A (ja) * | 2007-08-02 | 2009-02-19 | Hochiki Corp | 防災表示盤及び制御方法 |
| JP2016040685A (ja) * | 2014-08-12 | 2016-03-24 | ホーチキ株式会社 | 防災受信機 |
| JP2017134673A (ja) * | 2016-01-28 | 2017-08-03 | 日本ドライケミカル株式会社 | 火災、侵入、漏水等の検知及び照明手段を備えた検知および報知システム |
| JP2019537721A (ja) * | 2016-11-10 | 2019-12-26 | マーク アンドリュー エングルンド、 | デジタルデータを提供する音響方法及びシステム |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002152937A (ja) | 2000-11-13 | 2002-05-24 | Toshiba Corp | 異常信号監視装置 |
| JP2013185922A (ja) | 2012-03-07 | 2013-09-19 | Hitachi Cable Ltd | 光ファイバ振動センサ |
| GB201601060D0 (en) * | 2016-01-20 | 2016-03-02 | Fotech Solutions Ltd | Distributed optical fibre sensors |
| US11561118B2 (en) * | 2018-08-30 | 2023-01-24 | Nec Corporation | State specifying system, state specifying apparatus, state specifying method, and non-transitory computer readable medium |
| CN114207389A (zh) | 2019-08-13 | 2022-03-18 | 日本电气株式会社 | 光纤传感系统、光纤传感设备和救援请求检测方法 |
-
2020
- 2020-03-04 JP JP2022504830A patent/JP7533566B2/ja active Active
- 2020-03-04 WO PCT/JP2020/009053 patent/WO2021176581A1/ja not_active Ceased
- 2020-03-04 US US17/799,378 patent/US12009855B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009037438A (ja) * | 2007-08-02 | 2009-02-19 | Hochiki Corp | 防災表示盤及び制御方法 |
| JP2016040685A (ja) * | 2014-08-12 | 2016-03-24 | ホーチキ株式会社 | 防災受信機 |
| JP2017134673A (ja) * | 2016-01-28 | 2017-08-03 | 日本ドライケミカル株式会社 | 火災、侵入、漏水等の検知及び照明手段を備えた検知および報知システム |
| JP2019537721A (ja) * | 2016-11-10 | 2019-12-26 | マーク アンドリュー エングルンド、 | デジタルデータを提供する音響方法及びシステム |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021176581A1 (ja) | 2021-09-10 |
| JP7533566B2 (ja) | 2024-08-14 |
| US12009855B2 (en) | 2024-06-11 |
| US20230061220A1 (en) | 2023-03-02 |
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