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Structural deformation measuring device and method based on optical fiber sensing

A technology for structural deformation and measuring devices, applied in measuring devices, optical devices, instruments, etc., can solve the problems of high cost, heavy maintenance workload, and numerous equipment

Active Publication Date: 2022-01-21
CHINA ACADEMY OF RAILWAY SCI CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For large-scale structures or strip facilities such as railway lines and mine roadways, the above-mentioned traditional measurement methods need to install a large number of sensors, and corresponding supporting power cables and signal cables. There are many equipments, high cost, and heavy maintenance workload.

Method used

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  • Structural deformation measuring device and method based on optical fiber sensing
  • Structural deformation measuring device and method based on optical fiber sensing
  • Structural deformation measuring device and method based on optical fiber sensing

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Embodiment Construction

[0049] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0050] Before the technical solution of the present invention is described in detail, the term conventions used in the present invention are first introduced as follows:

[0051] The chord measurement value is the sine vector value of the curve measured by a chord line of a certain length. The result of the chord measurement value can represent the lateral or...

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Abstract

The invention provides a structural deformation measuring device and method based on optical fiber sensing. Structural deformation serves as a measurement index, the optical fiber sensing technology is adopted, a chord measurement device and a measurement method are combined, the structural deformation value and position calculated according to the chord length are obtained by collecting optical fiber strain data in real time and processing the optical fiber strain data, early warning and alarming can be conducted according to a management threshold value, and online monitoring of structural deformation is achieved. The sensing optical fiber adopted in the invention has sensing and information transmission functions, does not need power supply, and is especially suitable for being used in the fields of long-distance strip-shaped distributed railways, rail transit, mine roadways, underground pipe galleries, dams and the like.

Description

【Technical field】 [0001] The present application relates to the technical field of structural deformation monitoring, in particular to a device and method for measuring structural deformation based on optical fiber sensing. 【Background technique】 [0002] Structural deformation monitoring is an important part of structural health monitoring. At present, the commonly used technical means in structural deformation monitoring include total station, displacement meter, GNSS and other monitoring methods. For large-scale structures or strip facilities such as railway lines and mine roadways, the above-mentioned traditional measurement methods need to install a large number of sensors, and corresponding supporting power cables and signal cables. There are many equipments, high cost, and heavy maintenance workload. [0003] For such applications, scholars at home and abroad have researched and developed optical fiber sensing measurement technology, which installs special optical fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 柴雪松王智超暴学志时佳斌蔡德钩曹生慧刘兴平冯毅杰凌烈鹏田德柱段培勇刘艳芬谢锦妹于国丞周游金花
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD
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