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Replaceable high-anti-fatigue fiber grating strain sensor

A strain sensor and optical fiber strain technology, which is applied to instruments, optical devices, measuring devices, etc., can solve the problems of non-replacement and difficult maintenance of optical fiber strain sensors, and achieve the effect of avoiding sensor failure, accurate temperature compensation, and prolonging use time.

Pending Publication Date: 2017-06-20
ZHIXING S&T
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the non-replaceable and difficult-to-maintain problems of traditional optical fiber strain sensors in the prior art, the present invention provides a replaceable, easy-to-maintain, plug-and-play optical fiber strain sensor

Method used

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  • Replaceable high-anti-fatigue fiber grating strain sensor
  • Replaceable high-anti-fatigue fiber grating strain sensor
  • Replaceable high-anti-fatigue fiber grating strain sensor

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Embodiment Construction

[0034] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] In order to achieve the purpose of the present invention, in some embodiments of a replaceable high-fatigue fiber grating strain sensor,

[0036] like figure 1 As shown, a replaceable high-fatigue fiber grating strain sensor includes: a central sensing element 1 , an anchor assembly, two sensor bases 2 arranged in pairs, and a position adjusting element 3 .

[0037] like figure 2 As shown, the central sensing element 1 is a sensing element 13 compounded with fiber gratings, and an optical fiber quick interface 11 is connected to the output end of the central sensing element 1 .

[0038] The anchoring assembly includes a tail anchoring cylinder 4, an end anchoring cylinder 5 and an outer anchor 6 of the anchor head. The outer anchor member 6 of the anchor head is sleeved in the middle area of ​​the central sensing member.

[0039...

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Abstract

The invention discloses a replaceable high-anti-fatigue fiber grating strain sensor comprising a central sensing element, an anchoring assembly, two sensor bases arranged in pair, and a position adjusting element. A quick fiber port is connected to the output terminal of the central sensing element. The anchoring assembly consists of a tail anchoring cylinder, an end anchoring cylinder and an anchor head; the tail anchoring cylinder sleeves the tail of the central sensing element; the end anchoring cylinder sleeves the end portion of the central sensing element; and the anchor head is arranged in the middle area of the central sensing element in a sleeve manner. The two sensor bases arranged at the surface of a to-be-measured object are used for fixing the two ends of the central sensing element; each sensor base is provided with a through hole; and the central sensing element passes through the through holes. The position adjusting element arranged at the central sensing element is used for adjusting the position of the central sensing element. On the basis of the design way of separation of the central sensing element with the sensor bases, replacement or maintenance of the central sensing element can be realized conveniently; and with the unique packaging process, the sensor structure has the better anti-fatigue performance.

Description

technical field [0001] The invention relates to the technical field of structural safety monitoring, in particular to a replaceable high-fatigue fiber grating strain sensor. Background technique [0002] Deformation is the direct representation of the working behavior of engineering structures. Taking reliable measures to monitor the deformation of engineering structures is of great significance for evaluating the health status of engineering structures and ensuring the safe operation of engineering structures. Optical fiber sensing technology has the advantages of low cost, low test workload and labor intensity, and easy to realize automatic testing. Because of its small size, light weight, small impact on structural stress field, anti-electromagnetic interference, stable test, high sensitivity, good durability, easy to achieve distributed and real-time online testing, and integration of sensing and data transmission due to the unique characteristics of sensitive components...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 欧进萍周智季玉玉谢朝晖马文龙
Owner ZHIXING S&T
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