CN205027314U - Novel experiment of fiber grating displacement sensing device - Google Patents
Novel experiment of fiber grating displacement sensing device Download PDFInfo
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- CN205027314U CN205027314U CN201520832422.5U CN201520832422U CN205027314U CN 205027314 U CN205027314 U CN 205027314U CN 201520832422 U CN201520832422 U CN 201520832422U CN 205027314 U CN205027314 U CN 205027314U
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- fiber grating
- displacement sensor
- sensor
- grating displacement
- fiber
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Abstract
The utility model discloses a novel experiment of fiber grating displacement sensing device, the last fiber grating displacement sensor that is provided with of fixed platform, the last slide caliper that is provided with of fiber grating displacement sensor, slide caliper one side is provided with the movable block, the printer passes through wavelength collection appearance and is connected with fiber grating demodulation appearance, fiber grating demodulation appearance opposite side is connected with fiber grating displacement sensor, the removal end that changes slide caliper and sensor can carry out displacement sensor's demarcation, sensor after the demarcation can directly be used for the measurement of displacement, use scanning laser wavelength demodulation appearance reading sensor's center wavelength, laser lamp -house has very high SNR, the experimental apparatus does not influence measurement accuracy because of the more messenger's light intensity of sensor network measurement station descends, the light intemsity variation that can avoid traditional intensity type optic fibre displacement sensor influences the problem, and is simple in structure, convenient mounting and convenient operation are realized, reading accuracy is high together, unique advantages such as data processing automation.
Description
[technical field]
The utility model relates to method using in optic fiber displacement sensor field, specifically a kind of novel fiber grating displacement sensing experimental provision.
[background technology]
Optical fibre displacement sensor is the New Displacement Transducer that developed recently gets up, there is the electromagnetism interference not available for common machinery and electronic displacement sensor, electrical isolation, good endurance, the advantages such as volume is little, thus paid much attention in displacement measurement application, along with more and more meticulousr to the requirement of optical fibre displacement sensor in engineering and experiment test, weak point based on the displacement transducer of measured intensity principle displays gradually, as: linear measurement range is little, contradiction is there is between probe size and range, temperature compensation mechanism is complicated, the stability of sensor and precision are subject to the influence of fluctuations of the intensity of light source large, the impact of environment light disturbance is measured, reflecting surface is subject to the environment parameter impacts such as dust, debug accuracy requirement high, be subject to mechanical vibration impact etc., optical fibre displacement sensor is made to be subject to serious impact in the engineer applied of reality, hamper the performance of Fibre Optical Sensor particular advantages.
Therefore, for overcome above-mentioned technology deficiency and design can self calibration, measuring accuracy high, not by a kind of novel fiber grating displacement sensing experimental provision of the environmental impacts such as light intensity, inventor's problem to be solved just.
[utility model content]
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of novel fiber grating displacement sensing experimental provision, this experimental provision simplifies the installation process of conventional strength coded optical fibres sensor, there is environment resistant vibration and temperature compensation function, can self calibration, measuring accuracy high, not by environmental impacts such as light intensity, to grasping Novel fiber grating displacement sensor principle and using method fast, improving Fibre Optical Sensor and using technical ability to have practical significance.
The utility model solves the technical scheme that its technical matters adopts: a kind of novel fiber grating displacement sensing experimental provision, it comprises printer, wavelength Acquisition Instrument, fiber Bragg grating (FBG) demodulator, optical fiber displacement sensor, demarcation vernier caliper, movable block, stationary platform, described stationary platform is provided with fiber grating displacement sensor, described fiber grating displacement sensor is provided with vernier caliper, described vernier caliper side is provided with movable block, described printer is connected with fiber Bragg grating (FBG) demodulator by wavelength Acquisition Instrument, described fiber Bragg grating (FBG) demodulator opposite side is connected with fiber grating displacement sensor.
Further, described fiber Bragg grating (FBG) demodulator is hyperchannel scanning laser (FBG) demodulator.
Further, described fiber grating displacement sensor is rod-pulling type fiber grating displacement sensor.
The beneficial effects of the utility model are:
1, the passive device of the utility model employing is as fiber grating, and the band inverse filter made in light-sensitive optical fibre in-core formation refractive index periodic modulation profile by Ultra-Violet Laser, can provide accurate perceptual signal to the change of temperature and stress and so on physical quantities.
2, the LASER Light Source that the utility model device adopts has very high signal to noise ratio (S/N ratio), and experimental provision does not make light intensity decline and affect measuring accuracy because sensing network measuring point is more, the light-intensity variation of traditional intensity type optical fibre displacement sensor can be avoided to affect problem.
3, the utility model has multiple alternate channel, and accessible fiber-optical grating temperature sensor carries out temperature compensation, is suitable for practical application.
4, the utility model directly can dock with the engineer applied of sensor, has directive significance to practical application.
5, the rod-pulling type fiber grating displacement sensor of the utility model employing, the variable quantity of the corresponding fiber bragg grating center wavelength of parallel displacement amount of pull bar, only need read displacement variable by vernier caliper, facilitate reading.
[accompanying drawing explanation]
Fig. 1 is the utility model one-piece construction schematic diagram.
Description of reference numerals: 1-printer; 2-wavelength Acquisition Instrument; 3-fiber Bragg grating (FBG) demodulator; 4-fiber grating displacement sensor; 5-vernier caliper; 6-movable block; 7-stationary platform.
[embodiment]
Below in conjunction with specific embodiment, set forth the utility model further, should be understood that these embodiments are only not used in restriction scope of the present utility model for illustration of the utility model.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values drop on application appended claims limited range equally.
The utility model one-piece construction schematic diagram see Fig. 1, comprise printer 1, wavelength Acquisition Instrument 2, fiber Bragg grating (FBG) demodulator 3, fiber grating displacement sensor 4, vernier caliper 5, movable block 6, stationary platform 7, stationary platform 7 is provided with fiber grating displacement sensor 4, on fiber grating displacement sensor, 4 are provided with vernier caliper 5, vernier caliper 5 side is provided with movable block 6, printer 1 is connected with fiber Bragg grating (FBG) demodulator 3 by wavelength Acquisition Instrument 2, and fiber Bragg grating (FBG) demodulator 3 opposite side is connected with fiber grating displacement sensor 4.
The utility model adopts magnet base fixation of sensor 4 and vernier caliper 5, when the relative stiff end of pull bar reference edge is moved, displacement variable can be read by vernier caliper 5, read the centre wavelength of fiber-optic grating sensor 4 by fiber Bragg grating (FBG) demodulator 3 simultaneously, in fiber grating displacement sensor 4 arrangement, adjustment that need not be complicated, directly place parallel with vernier caliper 5 for fiber grating displacement sensor 4, wide range vernier caliper 5 is adopted to demarcate, the demarcation of fiber grating displacement sensor 4 can be carried out in the mobile terminal changing vernier caliper 5 and fiber grating displacement sensor 4, calibrated fiber grating displacement sensor 4 can be directly used in the measurement of displacement, fiber Bragg grating (FBG) demodulator 3 is used to read the centre wavelength of fiber grating displacement sensor 4, LASER Light Source has very high signal to noise ratio (S/N ratio), experimental provision does not make light intensity decline and affect measuring accuracy because sensing network measuring point is more, the light-intensity variation of traditional intensity type optical fibre displacement sensor can be avoided to affect problem, instrument has multiple alternate channel, accessible fiber-optical grating temperature sensor carries out temperature compensation, be suitable for practical application.
The utility model Fiber Bragg Grating Displacement Sensor experimental provision, have structure simple, install easy to operate, measuring accuracy is high, not by particular advantages such as environmental impact, datamation such as light intensity.
Claims (3)
1. a novel fiber grating displacement sensing experimental provision, it is characterized in that: it comprises printer, wavelength Acquisition Instrument, fiber Bragg grating (FBG) demodulator, fiber grating displacement sensor, demarcation vernier caliper, movable block, stationary platform, described stationary platform is provided with fiber grating displacement sensor, described fiber grating displacement sensor is provided with vernier caliper, described vernier caliper side is provided with movable block, described printer is connected with fiber Bragg grating (FBG) demodulator by wavelength Acquisition Instrument, described fiber Bragg grating (FBG) demodulator opposite side is connected with fiber grating displacement sensor.
2. a kind of novel fiber grating displacement sensing experimental provision according to claim 1, is characterized in that: described fiber Bragg grating (FBG) demodulator is hyperchannel scanning laser (FBG) demodulator.
3. a kind of novel fiber grating displacement sensing experimental provision according to claim 1, is characterized in that: described fiber grating displacement sensor is rod-pulling type fiber grating displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832422.5U CN205027314U (en) | 2015-10-19 | 2015-10-19 | Novel experiment of fiber grating displacement sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832422.5U CN205027314U (en) | 2015-10-19 | 2015-10-19 | Novel experiment of fiber grating displacement sensing device |
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| Publication Number | Publication Date |
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| CN205027314U true CN205027314U (en) | 2016-02-10 |
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| CN201520832422.5U Expired - Fee Related CN205027314U (en) | 2015-10-19 | 2015-10-19 | Novel experiment of fiber grating displacement sensing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737741A (en) * | 2016-02-25 | 2016-07-06 | 上海大学 | Integrated interference type micro-displacement optical fiber sensor, calibration device thereof and calibration method thereof |
| CN107238350A (en) * | 2017-06-26 | 2017-10-10 | 郑嘉麒 | A kind of utilization fiber grating measures the device of workpiece surface displacement |
| CN108844482A (en) * | 2018-08-23 | 2018-11-20 | 北京通为科技有限公司 | The calibration platform of fiber-optic grating sensor |
-
2015
- 2015-10-19 CN CN201520832422.5U patent/CN205027314U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737741A (en) * | 2016-02-25 | 2016-07-06 | 上海大学 | Integrated interference type micro-displacement optical fiber sensor, calibration device thereof and calibration method thereof |
| CN105737741B (en) * | 2016-02-25 | 2018-08-07 | 上海大学 | Integrated interference-type micro-displacement fibre optical sensor and its caliberating device and scaling method |
| CN107238350A (en) * | 2017-06-26 | 2017-10-10 | 郑嘉麒 | A kind of utilization fiber grating measures the device of workpiece surface displacement |
| CN107238350B (en) * | 2017-06-26 | 2019-08-23 | 郑嘉麒 | A kind of device using fiber grating measurement workpiece surface displacement |
| CN108844482A (en) * | 2018-08-23 | 2018-11-20 | 北京通为科技有限公司 | The calibration platform of fiber-optic grating sensor |
| CN108844482B (en) * | 2018-08-23 | 2024-01-19 | 北京通为科技有限公司 | Calibration platform of fiber grating sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20161019 |
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| CF01 | Termination of patent right due to non-payment of annual fee |