CN202350745U - Optical grating displacement meter - Google Patents
Optical grating displacement meter Download PDFInfo
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- CN202350745U CN202350745U CN2011204939631U CN201120493963U CN202350745U CN 202350745 U CN202350745 U CN 202350745U CN 2011204939631 U CN2011204939631 U CN 2011204939631U CN 201120493963 U CN201120493963 U CN 201120493963U CN 202350745 U CN202350745 U CN 202350745U
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- strain
- strain beam
- optical fiber
- optical grating
- displacement meter
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Abstract
The utility model discloses an optical grating displacement meter, belonging to the field of a sensor. The optical grating displacement meter comprises a support, a sleeve, a strain beam, a fixing pressing block, a first strain optical grating, a second strain optical grating, an optical fiber and a steel wire rope, wherein the support comprises an optical fiber support, a spring pipe adapter and a mounting support; the sleeve is mounted between the optical fiber support and the spring pipe adapter; the strain beam is an L-shaped strain beam and is mounted on the mounting support to be fixed through the fixing pressing block; the first strain optical grating and the second strain optical grating are respectively adhered to an extruded surface and a stretched surface of the strain beam; a starting end of the optical fiber stretches in from the optical fiber support and finally stretches out from the optical fiber support; and one end of the steel wire rope is fixedly arranged on the strain beam, and the other end of the steel wire rope stretches out from the spring pipe adapter. The optical grating displacement meter disclosed by the utility model has the advantages of good lightning stroke resistance, strong anti-electromagnetic interference performance, longer measurement distance, good reliability, wide measurement range and high measurement precision; the direction of the force does not need to be changed through an external structure; and the optical grating displacement meter has flexible expandability of different measuring ranges.
Description
Technical field
The utility model relates to a kind of sensor, particularly a kind of pattern displacement meter.
Background technology
At present; The normal measurer that adopts of the displacement deformation of monitoring building structure is an electronic sensor; The folding degree of the structural cracks of covil construction, hydraulic engineering or seam for example, and building foundation or the road and rail roadbed bankets or the soil body settling amount of other similar structures all obtains through the Displacement Measurement distortion.
Because electronic sensor self exists anti-thunderbolt poor performance, anti-electromagnetic interference performance is poor, measuring distance is nearer defective, so caused poor reliability, measurement range is little, measuring accuracy is not high problem.
The utility model content
Receive the electronic sensor self-defect in the prior art in order to overcome, the problem that poor reliability, measurement range are little, measuring accuracy is not high that causes, the utility model embodiment provides a kind of pattern displacement meter.Said technical scheme is following:
A kind of pattern displacement meter comprises bearing, sleeve pipe, strain beam, fixedly briquetting, the first strain grating, the second strain grating, optical fiber and wire rope,
Said bearing is structure as a whole, and said bearing comprises the optic fibre adminiculum and the bourdon tube adapter at two ends, and middle erection support;
Said sleeve pipe is installed between said optic fibre adminiculum and the said bourdon tube adapter;
Said strain beam is installed on the said erection support, and said strain beam is fixed through said fixedly briquetting, and said strain beam is a L type strain beam;
The said first strain grating sticks on extruded surface in the said strain beam, and the said second strain grating sticks on the surface that is stretched in the said strain beam;
The initiating terminal of said optical fiber is stretched into by said optic fibre adminiculum; Turn round through said erection support and the said first strain grating to said bourdon tube adapter; Stretched out by said optic fibre adminiculum through said strain beam, the said second strain grating and said fixedly briquetting, said fiber optic rotary end sticks on the said erection support again;
Said wire rope one end is fixed on the said strain beam, and the other end of said wire rope is stretched out by said bourdon tube adapter.
Further, said bourdon tube adapter and said sleeve pipe touching position are provided with O-ring seal.
Further, said optic fibre adminiculum and said sleeve pipe touching position are provided with O-ring seal.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is: compare electronic sensor of the prior art, the said pattern displacement meter of the utility model self has that good, the anti-electromagnetic interference performance of anti-thunderbolt performance is strong, measuring distance is far away, good reliability, measurement range is big, measuring accuracy is high advantage; Said L type strain beam need be through the direction of extraneous structural change power; The utility model is measured the accurate measurement of actual springs displacement through the surface strain amount of L type strain beam; Through the bourdon tube adapter, the spring of different ranges can be installed in addition, have the flexible expansion property of different ranges.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the front view of the utility model embodiment 1 said pattern displacement meter;
Fig. 2 is the echelon sectional view along A-A line among Fig. 1.
Among the figure: 1 optical fiber outlet, the initiating terminal of 2B optical fiber, the terminal of 2C optical fiber, 3 fixing briquettings, 4 first strain gratings, 5 second strain gratings, 6 bourdon tube adapters, 7 erection supports, 8 sleeve pipes, 9 strain beams, 10 wire rope, 11 O-ring seals, 12 optic fibre adminiculums.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model embodiment is done to describe in detail further below.
Shown in Fig. 1-2; The described a kind of pattern displacement meter of the utility model; Comprise bearing, sleeve pipe 8, strain beam 9, fixedly briquetting 3, the first strain grating 4, the second strain grating 5, optical fiber and wire rope 10; Said bearing is structure as a whole, and said bearing comprises the optic fibre adminiculum 12 and bourdon tube adapter 6 at two ends, and middle erection support 7; Said sleeve pipe 8 is installed between said optic fibre adminiculum 12 and the said bourdon tube adapter 6; Said strain beam 9 is installed on the said erection support 7, and said strain beam 9 is fixed through said fixedly briquetting 3, and said strain beam 9 is a L type strain beam; The said first strain grating 4 sticks on extruded surface in the said strain beam 9, and the said second strain grating 5 sticks on the surface that is stretched in the said strain beam 9; The initiating terminal 2B of said optical fiber is stretched into by said optic fibre adminiculum 12; Turn round through said erection support 7 and the said first strain grating 4 to said bourdon tube adapter 6; Stretch out by said optic fibre adminiculum 12 through said strain beam 9, the said second strain grating 5 and said fixedly briquetting 3 again; The terminal 2C that is optical fiber is stretched out by optical fiber outlet 1, and said fiber optic rotary end sticks on the said erection support 7; Said wire rope 10 1 ends are fixed on the said strain beam 9, and the other end of said wire rope 10 is stretched out by said bourdon tube adapter 6.
Compare electronic sensor of the prior art, the said pattern displacement meter of the utility model self has that good, the anti-electromagnetic interference performance of anti-thunderbolt performance is strong, measuring distance is far away, good reliability, measurement range is big, measuring accuracy is high advantage.
In addition; Said L type strain beam receives under the horizontal pull F effect; Because the architectural characteristic of L type strain beam can be divided into horizontal pull F two power of horizontal direction and vertical direction around the corner; The power of vertical direction is the main power that L type strain beam is bent, thereby does not need external structure and change the direction of power; The utility model is measured the accurate measurement of actual springs displacement through the surface strain amount of L type strain beam.
In addition,, the spring of different ranges can be installed,, realize that the flexible expansion property of different ranges makes product realize seriation more easily through changing the length of the spring of hanging through bourdon tube adapter 6.
Because unavoidably can produce temperature in the practical application, and the directly drift of influence measurement numerical value of variation of temperature, the utility model has adopted the first strain grating 4 and the second strain grating 5 in order to revise Influence of Temperature, and adopts differential technique to calculate.Specify: in the time of in actual measurement; The temperature that the long limit upper and lower surfaces of L type strain beam receives is identical; When L type strain beam receives under the effect of tensile force f, the upper and lower surface on long limit can be extruded respectively and stretch, and it is bent; The bending change amount can be delivered to signal on the grating analytical instrument by the first strain grating 4 and 5 perception of the second strain grating; We can see that the first strain grating, 4 wavelength of the face of being squeezed diminish on the grating analytical instrument, and the second strain grating, 5 wavelength that receive stretching face become big, because the first strain grating 4 is consistent with the second strain grating, 5 temperature influences; So when temperature variation, the wavelength of the first strain grating 4 deducts the wavelength difference of the second strain grating 5 just can compensate for temperature effects.
Further, as shown in Figure 2 in order to increase the sealing of the utility model, said bourdon tube adapter 6 is provided with O-ring seal 11 with said sleeve pipe 8 touching positions.
Further, in order to increase the sealing of the utility model, referring to Fig. 2, said optic fibre adminiculum 12 is provided with O-ring seal with said sleeve pipe 8 touching positions.
The principle of work of the utility model: as shown in Figure 2, wire rope 10 is under the effect of external force F; Exerting all one's strength acts on the strain beam 9, and strain beam 9 occurs bending and deformation under the effect of power F; The deformation that strain beam 9 is produced is bonded to 4 perception of the first strain grating on it, and the first strain grating 4 is sent to the variable shaped beam size that perceives to signal through the initiating terminal 2B of optical fiber the signal analysis device of far-end; Connect the steel pipe that there is spring an inside at bourdon tube adapter 6 places, the spring in the steel pipe is connected with wire rope 10, when the different length of springs; The pulling force that is produced will pass to strain beam 9 through wire rope 10; First bonding on the strain beam 9 strain grating 4 will be measuring the grating analytical instrument that different strain values is delivered to a distant place, and the deflection of strain beam 9 and the elongation of spring are directly proportional, so the elongation of spring is exactly actual displacement; So, will know the length that spring stretches through of the analysis of grating analytical instrument to the different wavelengths light signal.
In addition, the utlity model has the many characteristics of distributed measurement point, can transmission range reach 35 kms, be fit to static state and dynamic test, be easy to set up the distributed sensing network.
Therefore, the utility model can be used for monitoring the folding degree of crack on the structures such as covil construction, hydraulic engineering or seam; Highway or railway bed, banket or the soil body settlement monitoring of other similar structures.
Range: 12mm, 25mm, 50mm, 100mm, 150mm or customization.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (3)
1. a pattern displacement meter is characterized in that, comprises bearing, sleeve pipe, strain beam, fixedly briquetting, the first strain grating, the second strain grating, optical fiber and wire rope,
Said bearing is structure as a whole, and said bearing comprises the optic fibre adminiculum and the bourdon tube adapter at two ends, and middle erection support;
Said sleeve pipe is installed between said optic fibre adminiculum and the said bourdon tube adapter;
Said strain beam is installed on the said erection support, and said strain beam is fixed through said fixedly briquetting, and said strain beam is a L type strain beam;
The said first strain grating sticks on extruded surface in the said strain beam, and the said second strain grating sticks on the surface that is stretched in the said strain beam;
The initiating terminal of said optical fiber is stretched into by said optic fibre adminiculum; Turn round through said erection support and the said first strain grating to said bourdon tube adapter; Stretched out by said optic fibre adminiculum through said strain beam, the said second strain grating and said fixedly briquetting, said fiber optic rotary end sticks on the said erection support again;
Said wire rope one end is fixed on the said strain beam, and the other end of said wire rope is stretched out by said bourdon tube adapter.
2. pattern displacement meter as claimed in claim 1 is characterized in that, said bourdon tube adapter and said sleeve pipe touching position are provided with O-ring seal.
3. according to claim 1 or claim 2 pattern displacement meter is characterized in that said optic fibre adminiculum and said sleeve pipe touching position are provided with O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204939631U CN202350745U (en) | 2011-12-01 | 2011-12-01 | Optical grating displacement meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204939631U CN202350745U (en) | 2011-12-01 | 2011-12-01 | Optical grating displacement meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202350745U true CN202350745U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204939631U Expired - Lifetime CN202350745U (en) | 2011-12-01 | 2011-12-01 | Optical grating displacement meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202350745U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680115A (en) * | 2018-07-25 | 2018-10-19 | 深圳市简测科技有限公司 | A kind of device for monitoring the deformation of piping lane bidirectional displacement |
| CN110186355A (en) * | 2019-04-30 | 2019-08-30 | 江汉大学 | Gap round the auto door measures tooling |
| CN113340223A (en) * | 2021-06-02 | 2021-09-03 | 桂林理工大学 | Fiber grating strain sensor with adjustable measuring range and preparation and use methods thereof |
| CN114046722A (en) * | 2021-10-12 | 2022-02-15 | 中车唐山机车车辆有限公司 | Displacement meter |
| CN114543694A (en) * | 2021-12-03 | 2022-05-27 | 国网新源控股有限公司 | Wide-range panel parting measuring device |
-
2011
- 2011-12-01 CN CN2011204939631U patent/CN202350745U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680115A (en) * | 2018-07-25 | 2018-10-19 | 深圳市简测科技有限公司 | A kind of device for monitoring the deformation of piping lane bidirectional displacement |
| CN110186355A (en) * | 2019-04-30 | 2019-08-30 | 江汉大学 | Gap round the auto door measures tooling |
| CN113340223A (en) * | 2021-06-02 | 2021-09-03 | 桂林理工大学 | Fiber grating strain sensor with adjustable measuring range and preparation and use methods thereof |
| CN113340223B (en) * | 2021-06-02 | 2022-12-09 | 桂林理工大学 | Fiber grating strain sensor with adjustable measuring range and preparation and use methods thereof |
| CN114046722A (en) * | 2021-10-12 | 2022-02-15 | 中车唐山机车车辆有限公司 | Displacement meter |
| CN114543694A (en) * | 2021-12-03 | 2022-05-27 | 国网新源控股有限公司 | Wide-range panel parting measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |