CN204555925U - A kind of fiber grating surface-type crack sensors - Google Patents
A kind of fiber grating surface-type crack sensors Download PDFInfo
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- CN204555925U CN204555925U CN201520246741.8U CN201520246741U CN204555925U CN 204555925 U CN204555925 U CN 204555925U CN 201520246741 U CN201520246741 U CN 201520246741U CN 204555925 U CN204555925 U CN 204555925U
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- optical fiber
- elastic construction
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Abstract
The utility model discloses a kind of fiber grating surface-type crack sensors, comprise main body cover, L-type fixed support support is installed in described main body cover, the vertical sway brace of described L-type fixing support rack is bolted on the side of installation main body cover, horizontal support arms is mounted by means of bolts on the rear wall of main body cover, the end of described vertical sway brace is provided with the elastic construction one of parallel horizontal support arm, and stress grating is equipped with in the gluing of described elastic construction one; Pulley and elastic construction two are installed in the end of described horizontal support arms, and temperature compensation grating is equipped with in the gluing of described elastic construction two; Described main body cover dual-side is also arranged with the hole passed through for optical fiber, hole is connected with and is provided with tail optical fiber sleeve pipe, also comprise optical fiber and wire rope.The temperature that eliminates of the utility model precision affects; Adopted by parts aluminium shell to encapsulate, intensity is high, good endurance, and encapsulation is simple, adapts to various engineering and installs occasion.
Description
Technical field
The utility model relates to a kind of crack sensors, particularly relate to the opening degree, the concrete construction joint that are applied in precision measurement surface seam, also can measure the stretch-draw seam of the soil body and the fiber grating surface-type crack sensors with temperature compensation function in rock and concrete crack.
Background technology
At present, crack sensing technology based on fiber grating principle is rapidly developed, fiber grating has advantages such as preventing electromagnetic interference (EMI), non-electric detection, anti-lightning, and fibre-optical raster crack sensor is widely applied in measurement is as civil engineering structure crack measurements such as bridge, dam, tunnel and heavy constructions.
In existing civil engineering work practical application, the fibre-optical raster crack sensor with temperature compensation function that main flow uses is less.But, Grating Properties determines grating wavelength change temperature influence to be affected much larger than the strain caused by crack, in monitoring works is implemented, fibre-optical raster crack sensor not with temperature compensation needs incidentally to install a fiber-optical grating temperature sensor and carrys out measures ambient temperature, to play the effect of temperature compensation.
Due to reasons such as field environment and sensor mounting processs, under some temperature environment change complicated situation, temperature sensor can not eliminate the changing unit of crack sensors wavelength temperature influence accurately, thus causes crack value to calculate the larger error of generation.In existing main flow crack sensors product, mostly well cannot solve that these are a series of because of by the crack precision problem of influence of temperature change.
Utility model content
The utility model, for the defect of prior art and deficiency, proposes a kind of fibre-optical raster crack sensor with temperature compensation.
The technical solution adopted in the utility model is as follows:
A kind of fiber grating surface-type crack sensors, comprise main body cover, L-type fixed support support is installed in described main body cover, the vertical sway brace of described L-type fixing support rack is bolted on the side of installation main body cover, horizontal support arms is mounted by means of bolts on the rear wall of main body cover, the end of described vertical sway brace is provided with the elastic construction one of parallel horizontal support arm, and stress grating is equipped with in the gluing of described elastic construction one; Pulley and elastic construction two are installed in the end of described horizontal support arms, and temperature compensation grating is equipped with in the gluing of described elastic construction two; Described main body cover dual-side is also arranged with the hole passed through for optical fiber, hole is connected with and is provided with tail optical fiber sleeve pipe, the optical fiber of the armored optical cable outside main body cover enters in main body cover from the hole of main body cover side and tail optical fiber sleeve pipe, and mucilage binding stretches out main body cover from the hole of main body cover opposite side and tail optical fiber sleeve pipe after elastic construction one and elastic construction two successively, also comprise wire rope, the other end being fixed on elastomeric element one is buckled in described wire rope one end by aluminium, the other end passes main body cover through level after pulley.
When described wire rope passes main body cover, fixing to guarantee that wire rope is in extended state by aluminium button on main body cover side.
Described main body cover is aluminum hull; Described L-type fixed support support is aluminum frame.Described tail optical fiber sleeve pipe is 304 stainless steel tail optical fiber sleeve pipes.Described elastomeric element one and elastomeric element two are equicohesive butterfly elastomeric element.
The beneficial effects of the utility model are embodied in:
The utility model designs based on fiber grating, adopts two equicohesive butterfly elastomeric element mucilage binding stress gratings and temperature compensation grating, and accurate eliminates temperature impact; Aluminium shell is adopted by parts to encapsulate, intensity is high, good endurance, encapsulation is simple, and fixation of sensor mode is flexible, adjustment range and precision can be carried out according to on-site actual situations, applied range, sensor all uses optical element, and waterproof effect is good, and be easy to networking, can real-time online measuring be realized.Adapt to various engineering and occasion is installed.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model;
In figure: 1, base, 2, main body cover, 3, pulley support block, 4, tail optical fiber sleeve pipe, 5, optical fiber, 6, stress grating, 7, temperature compensation grating, 8, elastomeric element one, 9, sheathed structure, 10, pulley structure, 11, wire rope, 12, aluminium button one, 13, aluminium button two, 14, elastomeric element two.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in detail.
A kind of fiber grating surface-type crack sensors, comprise main body cover 2, L-type fixed support support 3 is installed in described main body cover 2, the vertical sway brace of described L-type fixing support rack 3 is bolted on the side of installation main body cover, horizontal support arms is mounted by means of bolts on the rear wall of main body cover, the end of described vertical sway brace is provided with the elastic construction 1 of parallel horizontal support arm, and stress grating 6 is equipped with in the gluing of described elastic construction 1; Pulley 10 and elastic construction 2 14 are installed in the end of described horizontal support arms, and temperature compensation grating 7 is equipped with in the gluing of described elastic construction 2 14; Described main body cover 2 dual-side is also arranged with the hole passed through for optical fiber, hole is connected with and is provided with tail optical fiber sleeve pipe 4, the optical fiber 5 of the armored optical cable 9 outside main body cover 2 enters in main body cover 2 from the hole of main body cover 2 side and tail optical fiber sleeve pipe 4, and mucilage binding stretches out main body cover 2 from the hole of main body cover 2 opposite side and tail optical fiber sleeve pipe 4 after elastic construction 1 and elastic construction 2 14 successively, also comprise wire rope 11, one end that 12 are fixed on elastomeric element 1 is buckled by aluminium in described wire rope 11 one end, and the other end passes main body cover 2 through level after pulley 10.
When described wire rope 11 passes main body cover 2, fixing to guarantee that wire rope 11 is in extended state by aluminium button 13 on main body cover 2 side.
Described main body cover 2 is aluminum hull; Described L-type fixed support support 3 is aluminum frame.Described tail optical fiber sleeve pipe 4 is 304 stainless steel tail optical fiber sleeve pipes.Described elastomeric element 1 and elastomeric element 2 14 are equicohesive butterfly elastomeric element.
Claims (4)
1. a fiber grating surface-type crack sensors, comprise main body cover, L-type fixed support support is installed in described main body cover, the vertical sway brace of described L-type fixing support rack is bolted on the side of installation main body cover, horizontal support arms is mounted by means of bolts on the rear wall of main body cover, the end of described vertical sway brace is provided with the elastic construction one of parallel horizontal support arm, and stress grating is equipped with in the gluing of described elastic construction one; Pulley and elastic construction two are installed in the end of described horizontal support arms, and temperature compensation grating is equipped with in the gluing of described elastic construction two; Described main body cover dual-side is also arranged with the hole passed through for optical fiber, hole is connected with and is provided with tail optical fiber sleeve pipe, the optical fiber of the armored optical cable outside main body cover enters in main body cover from the hole of main body cover side and tail optical fiber sleeve pipe, and mucilage binding stretches out main body cover from the hole of main body cover opposite side and tail optical fiber sleeve pipe after elastic construction one and elastic construction two successively, also comprise wire rope, the other end being fixed on elastomeric element one is buckled in described wire rope one end by aluminium, the other end passes main body cover through level after pulley.
2. a kind of fiber grating surface-type crack sensors according to claim 1, is characterized in that: when described wire rope passes main body cover, fixing to guarantee that wire rope is in extended state by aluminium button on main body cover side.
3. a kind of fiber grating surface-type crack sensors according to claim 1, is characterized in that: described main body cover is aluminum hull; Described L-type fixed support support is aluminum frame, and described tail optical fiber sleeve pipe is 304 stainless steel tail optical fiber sleeve pipes.
4. a kind of fiber grating surface-type crack sensors according to claim 1, is characterized in that: described elastomeric element one and elastomeric element two are equicohesive butterfly elastomeric element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520246741.8U CN204555925U (en) | 2015-04-22 | 2015-04-22 | A kind of fiber grating surface-type crack sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520246741.8U CN204555925U (en) | 2015-04-22 | 2015-04-22 | A kind of fiber grating surface-type crack sensors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204555925U true CN204555925U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520246741.8U Expired - Fee Related CN204555925U (en) | 2015-04-22 | 2015-04-22 | A kind of fiber grating surface-type crack sensors |
Country Status (1)
| Country | Link |
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| CN (1) | CN204555925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197486A (en) * | 2016-07-21 | 2016-12-07 | 大连海事大学 | A kind of construction method of miter gate's optical fiber crack sensor |
-
2015
- 2015-04-22 CN CN201520246741.8U patent/CN204555925U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197486A (en) * | 2016-07-21 | 2016-12-07 | 大连海事大学 | A kind of construction method of miter gate's optical fiber crack sensor |
| CN106197486B (en) * | 2016-07-21 | 2018-08-31 | 大连海事大学 | A kind of construction method of miter gate's optical fiber crack sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20160422 |