CN217819125U - Optical fiber stress and vibration detection device - Google Patents
Optical fiber stress and vibration detection device Download PDFInfo
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- CN217819125U CN217819125U CN202221545057.6U CN202221545057U CN217819125U CN 217819125 U CN217819125 U CN 217819125U CN 202221545057 U CN202221545057 U CN 202221545057U CN 217819125 U CN217819125 U CN 217819125U
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Abstract
The utility model relates to the technical field of optical fiber detection, in particular to an optical fiber stress and vibration detection device, which comprises a sensing optical cable and an optical fiber sensor, wherein one end of the sensing optical cable is connected with the optical fiber sensor, and the other end of the sensing optical cable is arranged on a surface to be detected; the above-described arrangements include, but are not limited to, "S" type arrangements and "loop" type arrangements. The utility model discloses simple structure, simple to operate, test data is accurate, and to the stress that the displacement that awaits measuring leads to and the test of vibrations situation of change homoenergetic.
Description
Technical Field
The utility model belongs to the technical field of the fiber detection technique and specifically relates to indicate an optic fibre stress and vibrations detection device.
Background
The stress detection comprises the steps of detecting the surface stress of the workpiece, detecting the stress at a certain depth and carrying out qualitative and quantitative analysis on the stress. The method is often used for quality detection in the production process of products, and the stress is divided into various stresses such as tensile stress, compressive stress, torsional stress, shear stress, shearing stress and the like. The optical fiber sensing technology started from 1977 and developed rapidly along with the development of the optical fiber communication technology, and the optical fiber sensing technology is an important mark for measuring the informatization degree of a country. In the prior art, an optical fiber sensing technology is used for stress detection, but the existing detection equipment has the disadvantages of complex structure, inconvenient installation and single test function.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an optic fibre stress and vibrations detection device, simple structure, simple to operate, test data is accurate, and to the stress that the displacement that awaits measuring leads to and the test of vibrations situation of change homoenergetic.
In order to solve the technical problem, the utility model discloses a following technical scheme:
an optical fiber stress and vibration detection device comprises a sensing optical cable and an optical fiber sensor, wherein one end of the sensing optical cable is connected with the optical fiber sensor, and the other end of the sensing optical cable is arranged on a surface to be detected; the above-described arrangements include, but are not limited to, "S" type arrangements and "return" type arrangements.
Furthermore, the sensing optical cable is a strain and vibration composite sensing optical cable, the sensing optical cable comprises a micro-strain sensing optical fiber inner core, a plurality of steel wire reinforcements are arranged around the outer ring of the micro-strain sensing optical fiber inner core, and a PE outer sheath is sleeved outside the micro-strain sensing optical fiber inner core and the steel wire reinforcements.
Furthermore, the PE outer sheath of the sensing optical cable is bonded on the surface to be measured by epoxy resin AB glue.
Further, when the surface to be measured is formed by splicing a plurality of units to be measured which are laid in parallel, the sensing optical cable is laid to cover the surfaces of the adjacent units to be measured.
Further, the sensing optical cable 1 is linearly arranged on a surface to be detected to detect a vibration event.
The utility model has the advantages that:
in an actual use situation, the sensing optical cable is arranged on a surface to be measured, when the surface to be measured has displacement events such as deformation and sedimentation, the sensing optical cable arranged on the surface to be measured has stress change, and a change signal is received and analyzed by the optical fiber sensor; in the detection application environments of pipe corridors, tunnels and the like, the sensing optical cables are arranged on the pipe piece (namely the surface to be detected) in an S-shaped or return-shaped manner, and when a displacement event drives the pipe piece to displace, the sensing optical cables 1 are stretched or extruded to realize detection; when the surface to be measured has vibration events such as construction, damage and the like, the vibration signal is transmitted to the sensing optical cable, and the optical fiber sensor receives and analyzes the vibration signal. The utility model discloses can be fast accurate displacement and the vibrations to the face that awaits measuring detect. The device has the advantages of simple structure, convenience in installation and accurate test data, and can test the stress and vibration change conditions caused by the displacement to be tested.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the installation cross-section structure of the present invention;
fig. 3 is a schematic view of the installation structure of the pipe gallery of the present invention;
FIG. 4 is a schematic view of three layout methods of the present invention;
fig. 5 is a schematic perspective view of the sensing optical cable of the present invention;
fig. 6 is a schematic cross-sectional structure diagram of the sensing optical cable of the present invention.
Reference numerals:
1-a sensing optical cable; 11-micro strain sensing optical fiber inner core; 12-steel wire reinforcement; 13-PE outer sheath; 2-a fiber optic sensor; 3-surface to be measured; 4-epoxy resin AB glue.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
As shown in fig. 1-4, the utility model provides an optical fiber stress and vibration detecting device, which comprises a sensing optical cable 1 and an optical fiber sensor 2, wherein one end of the sensing optical cable 1 is connected with the optical fiber sensor 2, and the other end of the sensing optical cable 1 is arranged on a surface to be detected 3; the above-described arrangements include, but are not limited to, "S" type arrangements and "return" type arrangements.
In the embodiment, the sensing optical cable 1 is arranged on the surface 3 to be measured, when the surface 3 to be measured has displacement events such as deformation and sedimentation, the sensing optical cable 1 arranged on the surface 3 to be measured has stress change, and the change signal is received and analyzed by the optical fiber sensor 2; in the detection application environments of pipe corridors, tunnels and the like, the sensing optical cable 1 is arranged on the pipe piece, namely the surface 3 to be detected, in an S-shaped or return-shaped manner, and when a displacement event drives the pipe piece to displace, the sensing optical cable 1 is stretched or extruded to realize detection; when the surface to be measured has vibration events such as construction, damage and the like, the vibration signal is transmitted to the sensing optical cable 1, and the optical fiber sensor 2 receives and analyzes the vibration signal. The device can quickly and accurately detect the displacement and the vibration of the surface to be detected. The device has the advantages of simple structure, convenience in installation and accurate test data, and can test the stress and vibration change conditions caused by the displacement to be tested.
As shown in fig. 5-6, the sensing optical cable 1 is a strain and vibration composite sensing optical cable, the sensing optical cable 1 includes a micro-strain sensing optical fiber inner core 11, a plurality of steel wire reinforcements 12 are arranged around an outer ring of the micro-strain sensing optical fiber inner core 11, and a PE outer sheath 13 is sleeved outside the micro-strain sensing optical fiber inner core 11 and the steel wire reinforcements 12; in this embodiment, the sensing optical cable 1 adopts a strain and vibration composite sensing optical cable, and is tightly attached to the surface to be measured 3, so that displacement and vibration events can be effectively transmitted to the optical cable, and the detection result can be conveniently and accurately analyzed.
As shown in fig. 2 and 6, the PE outer sheath 13 of the sensing optical cable 1 is bonded to the surface to be measured 3 by using an epoxy AB glue 4; in this embodiment, adopt epoxy AB glue to glue and connect, it is more firm, can prevent not hard up influence test effect.
As shown in fig. 3, when the surface to be measured 3 is formed by splicing a plurality of units to be measured which are laid in parallel, the sensing optical cable 1 is laid to cover the surfaces of the adjacent units to be measured; in this embodiment, when a plurality of units to be tested are spliced, in order to make the test more accurate, the sensing optical cable 1 is laid to cover the surfaces of the adjacent units to be tested, so as to comprehensively cover the test, and the surface 3 to be tested with the potential risk of the displacement event can be effectively detected.
As shown in fig. 4, the sensing optical cable 1 is linearly arranged on the surface 3 to be detected to detect a vibration event; in this embodiment, the sensing optical cable 1 is arranged in a linear manner on the surface 3 to be detected to detect the vibration event, so that the vibration data can be transmitted quickly.
All technical features in the embodiment can be subjected to appearance modification according to actual needs.
The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.
Claims (5)
1. The utility model provides an optic fibre stress and vibrations detection device which characterized in that: the optical fiber sensor comprises a sensing optical cable (1) and an optical fiber sensor (2), wherein one end of the sensing optical cable (1) is connected with the optical fiber sensor (2), and the other end of the sensing optical cable (1) is arranged on a surface to be detected (3);
the above-described arrangements include, but are not limited to, "S" type arrangements and "return" type arrangements.
2. The optical fiber stress and vibration detecting device according to claim 1, wherein: sensing optical cable (1) adopts strain, compound sensing optical cable of vibrations, sensing optical cable (1) is including microstrain sensing optic fibre inner core (11), the outer lane of microstrain sensing optic fibre inner core (11) encloses and is equipped with a plurality of steel wire reinforcement (12), microstrain sensing optic fibre inner core (11) and steel wire reinforcement (12) overcoat are equipped with PE oversheath (13).
3. The optical fiber stress and vibration detecting device according to claim 2, wherein: and the PE outer sheath (13) of the sensing optical cable (1) is bonded on the surface to be detected (3) by adopting epoxy resin AB glue (4).
4. The optical fiber stress and vibration detecting device according to claim 1, wherein: when the surface to be measured (3) is formed by splicing a plurality of units to be measured which are laid in parallel, the sensing optical cable (1) is laid to cover the surfaces of the adjacent units to be measured.
5. The optical fiber stress and vibration detecting device according to claim 1, wherein: the sensing optical cable (1) is linearly arranged on the surface to be detected (3) to detect the vibration event.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221545057.6U CN217819125U (en) | 2022-06-20 | 2022-06-20 | Optical fiber stress and vibration detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221545057.6U CN217819125U (en) | 2022-06-20 | 2022-06-20 | Optical fiber stress and vibration detection device |
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| Publication Number | Publication Date |
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| CN217819125U true CN217819125U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221545057.6U Active CN217819125U (en) | 2022-06-20 | 2022-06-20 | Optical fiber stress and vibration detection device |
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| CN (1) | CN217819125U (en) |
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2022
- 2022-06-20 CN CN202221545057.6U patent/CN217819125U/en active Active
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