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Optical fiber type high-precision tension detection device

A tension detection, high-precision technology, applied in the field of sensing, can solve the problems of limiting the range of use of electronic tension sensing devices, not being able to use it for a long time, and difficulty in precision, and achieve the benefits of popularization and use, good use effect, and high test accuracy Effect

Inactive Publication Date: 2012-06-06
XIAN JINHE OPTICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the measurement of tension by the three-point bending method, the detection requirements for the installation accuracy of the three pulleys and the lateral displacement of the middle pulley are very strict. It is difficult for the existing electronic detection devices to achieve high accuracy. occasions, it is not yet possible to use this method to detect
In addition, electronic tensiometers cannot be used for a long time in some harsh environments, such as electromagnetic interference and dusty places, which limit the scope of use of electronic tension sensing devices

Method used

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  • Optical fiber type high-precision tension detection device
  • Optical fiber type high-precision tension detection device
  • Optical fiber type high-precision tension detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 2 and 3 An optical fiber type high-precision tension detection device shown includes a housing 6 and a pulley 13 arranged above the housing 6. The number of the pulleys 13 is three, and two of the pulleys 13 are arranged on both sides and Both are fixedly connected to the housing 6 through a fixed rod, the other of the pulleys 13 is an intermediate pulley 12, the intermediate pulley 12 is located between the two pulleys and fixed on the upper end of the transmission rod 8, and the transmission rod 8 is installed on the housing 6, the transmission rod 8 is slidingly matched with the housing 6, the lower end of the transmission rod 8 is located inside the housing 6, and an optical fiber bending sensing unit is also arranged inside the housing 6, and the optical fiber bending sensing unit is located at The lower end of the transmission rod 8, the optical fiber bending sensing unit includes a signal fiber 33, a curved test channel for the signal fiber 33 to...

Embodiment 2

[0045] Such as Figure 4 and 5 As shown, the difference between this embodiment and Embodiment 1 is that the curved support 19 is a spring, and the first deformed tooth 4-1 and the second deformed tooth 4-2 are correspondingly arranged between two adjacent coils of the spring wire of the linear support 19. Between, and deformed teeth 1 4-1 and deformed teeth 2 4-2 are alternately arranged. In this embodiment, the structures, connections and working principles of other parts are the same as those in Embodiment 1.

Embodiment 3

[0047] Such as Figure 6 and 7 As shown, the difference between this embodiment and Embodiment 1 is that the curved bracket 19 is a bellows, and the first deformed tooth 4-1 and the second deformed tooth 4-2 are correspondingly arranged in the inner recess on the pipe wall 41 of the bellows On the opposite two side surfaces of each other, the first deformed tooth 4-1 and the second deformed tooth 4-2 are arranged alternately. In this embodiment, the structures, connections and working principles of other parts are the same as those in Embodiment 1.

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Abstract

The invention discloses an optical fiber type high-precision tension detection device, which comprises a shell and pulleys arranged at the upper part of the shell, wherein two of the pulleys are arranged at the two sides and are fixedly connected with the shell through fixed rods, the rest middle pulley is positioned between the two pulleys and is fixed on the upper end of a transmission rod, the transmission rod is arranged on the shell, the shell is also internally provided with an optical fiber curved sensing unit, the optical fiber curved sensing unit comprises signal optical fibers, a curved testing passage for the signal optical fibers to pass through and a testing unit butted with the signal optical fibers, the testing unit is also connected with a processing unit, and the curved testing passage also comprises a curved bracket, and a plurality of deformation teeth I and a plurality of deformation teeth II which are continuously arranged at opposite two sides in the curved bracket, and are in corresponding staggered arrangement, and the signal optical fibers are arranged between the deformation teeth I and the deformation teeth II. The optical fiber type high-precision tension detection device disclosed by the invention has the advantages that the design is reasonable, the manufacture is convenient, the suitability is strong, and the measurement to the tension of a cable can be realized.

Description

technical field [0001] The invention belongs to the field of sensing technology, and in particular relates to an optical fiber type high-precision tension detection device. Background technique [0002] Tension meters are widely used in many industries, such as papermaking, steel mills, textiles and cable processing industries. There are many monitoring principles and detection methods for tensiometers, but currently the most commonly used ones are electronic detection, and the most widely used are three points bending method, such as figure 1 , is to contact the three pulleys on the sensor with the surface of the tested cable, and add a certain lateral force to make the cable produce local deformation similar to 3-point bending. During the measurement, the sensor is clamped on the cable. During the process of pressing the middle pulley relative to the two pulleys on both sides, the middle pulley produces displacement changes and pressure changes. Experimental and theoretic...

Claims

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Application Information

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IPC IPC(8): G01L1/24G01L5/04
Inventor 杜兵
Owner XIAN JINHE OPTICAL TECH
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