Full-distributed optical fiber monitoring system and method for linear engineering safety monitoring

A fully distributed and safety monitoring technology, applied in the direction of using optical devices to transmit sensing components, measuring devices, instruments, etc., can solve the problems of difficult test requirements, high cost, and little effect, and achieve the effect of automatic measurement and analysis

Pending Publication Date: 2018-06-29
SHANDONG UNIV +1
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Problems solved by technology

The existing conventional testing technology shows in the long-term engineering application that it is very difficult for the traditional surface monitoring method and point monitoring technology to meet the above testing requirements. There are too many studies on corresponding protective measures, but the cost is expensive and the effect is very small

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  • Full-distributed optical fiber monitoring system and method for linear engineering safety monitoring
  • Full-distributed optical fiber monitoring system and method for linear engineering safety monitoring
  • Full-distributed optical fiber monitoring system and method for linear engineering safety monitoring

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[0042] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0043] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0044] A distributed optical fiber sensing system can be defined as an instrument or system that can sense the c...

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Abstract

The invention discloses a full-distributed optical fiber monitoring system and method for linear engineering safety monitoring. The full-distributed optical fiber monitoring system comprises full-distributed sensing optical fibers. The full-distributed sensing optical fibers are parallelly arranged in or on a linear engineering. The full-distributed sensing optical fibers are used for respectivelytransmitting collected signals to a laser and an electrooptic modulator in two routes. The electrooptic modulator is used for, after processing the received signals, successively transmitting to an optical detector, a data collecting device and a computer. The full-distributed optical fiber monitoring system has the advantages that first, the remote and long-distance monitoring can be realized byusing features of the optical fibers; second, the distributed monitoring can be realized, and a running state of the whole linear engineering can be mastered; third, the system can be used under severe environments, such as thunder and lightning, and humidity, because the optical fibers and optical signals are used; and fourth, the automation measurement and analysis can be realized, the deformation or temperature abnormity of the linear engineering is more rapidly obtained, an abnormal region is given in time, and a pre-warning is sent.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering monitoring, in particular to a fully distributed optical fiber monitoring system and method for linear engineering safety monitoring. Background technique [0002] Linear engineering generally has a long distance and a large range, and the environment in which the linear engineering is located is complex, requiring the sensing device to have waterproof, moisture-proof, and anti-electromagnetic interference performances. The existing conventional testing technology shows in the long-term engineering application that it is very difficult for the traditional surface monitoring method and point monitoring technology to meet the above testing requirements. There are too many studies on the corresponding protective measures, but the cost is expensive and the effect is very small. [0003] Compared with traditional sensing technologies, fiber optic sensors have the advantages of high se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/353G01D21/02
CPCG01D5/35306G01D21/02
Inventor 王静李姝凡张建清隋青美刘斌王正方李亦佳韩明娟蔡加兴
Owner SHANDONG UNIV
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