Title:
DISTRIBUTED OPTICAL FIBER SENSING TECHNIQUE-BASED DEVICE AND METHOD FOR SWELL MONITORING
Document Type and Number:
WIPO Patent Application WO/2022/161083
Kind Code:
A1
Abstract:
A distributed optical fiber sensing technique-based device and method for swell monitoring. The device comprises buoys (1), a Kevlar disturbance monitoring optical cable (2), mass blocks (3), an optical fiber demodulation system (4), and a signal transmission optical cable (5). The Kevlar disturbance monitoring optical cable (2) is connected to the buoys (1) and the mass blocks (3). The signal transmission optical cable (5) is connected to the Kevlar disturbance monitoring optical cable (2) and the optical fiber demodulation system (4). A connecting cable (6) is anchored to a rock mass and connects the multiple buoys (1) in series. The buoys (1) float within an area of water in which a potential landslide is found. The mass blocks (3) are suspended in water. The optical fiber demodulation system (4) is used for signal demodulation in the Kevlar disturbance monitoring optical cable (2). When swells occur, a monitoring signal threshold is compared with a monitoring alarm threshold by the optical fiber demodulation system (4). This solves the problem that undercurrents in the water and distribution characteristics thereof cannot be measured by existing swell monitoring utilizing water gauge point monitoring, leading to the underestimation of coastal hazards posed by the magnitude of the undercurrents in the water. This is characterized by a simple structure, online and real-time monitoring and early warning with respect to swell hazards, and simple and convenient operations.
Inventors:
XIANG XIN (CN)
ZHOU WENSONG (CN)
SUN ZHIYU (CN)
LI JINGHUA (CN)
LIU WEIKANG (CN)
ZHANG LI (CN)
HUO XUJIA (CN)
ZHOU WENSONG (CN)
SUN ZHIYU (CN)
LI JINGHUA (CN)
LIU WEIKANG (CN)
ZHANG LI (CN)
HUO XUJIA (CN)
Application Number:
PCT/CN2021/142248
Publication Date:
August 04, 2022
Filing Date:
December 29, 2021
Export Citation:
Assignee:
CHINA THREE GORGES CORP (CN)
HARBIN INST TECHNOLOGY (CN)
HARBIN INST TECHNOLOGY (CN)
International Classes:
G08B21/10; H04B10/071; H04B10/25
Foreign References:
| CN112785815A | 2021-05-11 | |||
| CN111983563A | 2020-11-24 | |||
| CN105300554A | 2016-02-03 | |||
| CN107449515A | 2017-12-08 | |||
| CN109061720A | 2018-12-21 | |||
| JP2013130483A | 2013-07-04 |
Attorney, Agent or Firm:
YICHANG THREE GORGES PATENT (CN)
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