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A tension expansion device for laying optical fiber and its measurement method

A technology of telescopic device and measurement method, which is applied in the direction of optical fiber/cable installation, measuring device, optical instrument test, etc., can solve the problems of unsatisfactory optical fiber stretchability, poor stretchability and bending resistance, etc., and achieve overall reliability Layout and the effect of reducing space requirements

Active Publication Date: 2021-07-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the optical fiber is extremely fragile, its stretchability and bending resistance are extremely poor. When encountering a movable structure, this traditional layout method cannot monitor the movable structure, such as a jack with a certain range. According to the traditional optical fiber laying method, the optical fiber cannot pass through the jack for overall monitoring of the structures at both ends of the jack; for example, the active parts of the aircraft wing, such as the leading edge slat, trailing edge flap and aileron, etc. will be damaged during operation. The rotation within 90° occurs, and the stretchability of the optical fiber cannot meet such a rotation angle

Method used

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  • A tension expansion device for laying optical fiber and its measurement method
  • A tension expansion device for laying optical fiber and its measurement method
  • A tension expansion device for laying optical fiber and its measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1 There is one tension expansion tube and the object to be tested is a one-way expansion body 2

[0042] Such as Figure 5 As shown, when the telescopic body 2 is arranged on one side of the telescopic fixed body 1, the object to be measured is a one-way telescopic body 2; the telescopic fixed body 1 is fixed, and the telescopic body 2 is scalable. The two ends of the tension expansion tube after the optical fiber is put in are respectively fixed on the telescopic fixed main body 1 and the expansion body 2 through cable ties 21, which is a tension expansion device for laying optical fibers.

[0043] In the above method of measuring the tension expansion device for laying optical fibers, the expansion body 2 is stretched in one direction, the tension expansion tube maintains a certain arc, and the distance between the two fixed feet 23 is determined to be D. Assuming that the maximum stroke of the expansion body 2 is L, set a Tolerance value ΔL=(1%~5%)L, then th...

Embodiment 2

[0044] Example 2 There is one tension expansion tube and the object to be tested is a two-way expansion body 2

[0045] Such as Figure 6 As shown, when the telescopic body 2 is arranged on both sides of the telescopic fixed body 1, the object to be measured is a two-way telescopic body 2; the telescopic fixed body 1 is fixed, and the telescopic body 2 is scalable, and the The two ends of the tension expansion tube after the optical fiber is inserted are respectively fixed on the expansion bodies 2 on both sides by cable ties 21, which is a tension expansion device for laying optical fibers.

[0046] The above method of measuring the tension expansion device for laying optical fibers determines that the distance between the two fixed feet 23 is D, assumes that the maximum stroke of the expansion body 2 is L, and sets a tolerance value ΔL=(1%~5%)L, then the tension The length of the telescopic tube is the arc length c≥L+D+ΔL of the arc.

Embodiment 3

[0047] Example 3 There are two tension expansion tubes and the object to be measured is a two-way expansion body 2

[0048] Such as Figure 7 As shown, when the telescopic body 2 is arranged on both sides of the telescopic fixed body 1, the object to be measured is a two-way telescopic body 2; There are two tubes arranged symmetrically, and the two ends of the stretched stretched tube after putting in the optical fiber are respectively fixed on the telescopic fixed main body 1 and the telescopic body 2 through cable ties 21, which is a tension stretchable device for laying optical fibers.

[0049] In the above method of measuring the tension expansion device for laying optical fibers, the expansion body 2 is bidirectionally stretched, the tension expansion tube maintains a certain radian, and the distance between the two fixed feet 23 of the two tension expansion tubes is D 1 、D 2 , assuming that the maximum stroke of the telescopic body is L, and setting a tolerance value Δ...

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Abstract

The invention discloses a tension expansion device for laying optical fibers, which belongs to the technical field of optical fiber grating monitoring, and comprises a tension expansion tube and a fixed main body. At least one end of the tension expansion tube is fixed on an object to be measured. tube and stretched tension telescopic tube; when the object to be measured is a telescopic body, the fixed body is a telescopic fixed body; when the object to be measured is a rotating body, the fixed body is a rotating fixed body, and the rotating body includes a non-rotating The body of rotation and the body of rotation after rotation. The present invention adopts the tension expansion tube device, which can well realize the optical fiber passing through the movable structure and effectively transmit signals and implement monitoring, etc., and realize the overall deployability of the optical fiber laying object with the movable structure; another purpose of the present invention is to provide The measuring method of the device is beneficial to control the length of the tension expansion tube, and reduces the required space requirement in the monitoring process of the present invention as much as possible.

Description

technical field [0001] The invention belongs to the technical field of optical fiber grating monitoring, and in particular relates to a tension expansion device for laying optical fibers and a measuring method thereof. Background technique [0002] At present, the optical fiber monitoring technology mainly lays optical fibers inside or on the surface of the structure, and the whole string of optical fibers is required to be fixed on the surface or inside of the structure during the laying process. [0003] Because the optical fiber is extremely fragile, its stretchability and bending resistance are extremely poor. When encountering a movable structure, this traditional layout method cannot monitor the movable structure, such as a jack with a certain range. According to the traditional optical fiber laying method, the optical fiber cannot pass through the jack for overall monitoring of the structures at both ends of the jack; for example, the active parts of the aircraft wing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/50G01M11/00
CPCG01M11/30G02B6/50
Inventor 秦伟戴国亮龚维明
Owner SOUTHEAST UNIV