CN207730354U - A kind of pressure fibre-optical sensing device - Google Patents
A kind of pressure fibre-optical sensing device Download PDFInfo
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- CN207730354U CN207730354U CN201820101983.1U CN201820101983U CN207730354U CN 207730354 U CN207730354 U CN 207730354U CN 201820101983 U CN201820101983 U CN 201820101983U CN 207730354 U CN207730354 U CN 207730354U
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- Measuring Fluid Pressure (AREA)
- Optical Transform (AREA)
Abstract
The utility model is related to sensory field of optic fibre, are in particular a kind of pressure fibre-optical sensing devices.The pressure that can real-time, be efficiently generated to optical fiber local environment senses, and solves the problems, such as that sensor local environment generates slight pressure and is not easy to find detection.The present apparatus is made of light source, light source tail optical fiber, gradual change multimode fibre and spectrometer；The output end of light source is connected to the input terminal of light source tail optical fiber, the output end fiber end face of light source tail optical fiber is welded with the input end fiber end surface dislocation of gradual change multimode fibre, the input terminal of the output end connection spectrometer of gradual change multimode fibre, the pressure F1 that simulated environment generates is generated by three-dimensional micro-displacement platform.The pressure change that the sensitive zones of the utility model progress sensing device are subject to is detected, and can carry out sensing detection to the deformation of the environment residing for sensing device indirectly.
Description
Technical field
The utility model is related to sensory field of optic fibre, are in particular a kind of pressure fibre-optical sensing devices.
Background technology
Optical fiber is widely applied in our daily life, in fields such as biomedical, sensing, communication and detections
Paid attention to；Optical fiber has many merits as transmission medium, as electrical insulating property is good, chemical property is stable, transmission speed is fast
Deng, and can work under the rugged environments such as inflammable and explosive, toxic, high temperature and pressure, with wide Research Prospects.
Optical fiber surface plasmon resonance body (Surface Plasmon Resonance, SPR) sensor is mainly to the external world
The variation of a certain physical quantity of environment is perceived and is transmitted, and physical quantity can be temperature, liquid refractivity, pressure etc..With society
The development and progress of meeting, it is higher and higher to the requirement liquid of the safety standard of people, such as the deformation of building body, the shape of bridge and bridge floor
Become, the safety all concerning people such as deformation of rail.The utility model is using on-line normalization formula optical fiber SPR sensor as base
Plinth makes pressure SPR sensorgram device, and the pressure generated to optical fiber local environment or the deformation of high sensitivity are capable of by this device
It is sensed.
Invention content
What a kind of pressure fibre-optical sensing device of the utility model can real-time, efficiently generate optical fiber local environment
Pressure is sensed, and solves the problems, such as that sensor local environment generates slight pressure and is not easy to find detection.
In order to solve the above technical problems, a kind of pressure fibre-optical sensing device of the utility model is by light source, light source tail optical fiber, gradual change
Multimode fibre and spectrometer composition；
Light source is the super continuum source of spectral width 450nm -1100nm, the excitation for generating excitation SPR phenomenons
Light；Light source tail optical fiber is used for transmission light source light spectrum；Gradual change multimode fibre changes for sensed pressure, and excitation SPR phenomenons generate SPR and pass
Photosensitive spectrum；Spectral width 450nm -1100nm of spectrometer, for receiving, showing and record SPR sensorgram spectrum；
The output end of light source is connected to the input terminal of light source tail optical fiber, output end fiber end face and the gradual change multimode of light source tail optical fiber
The input end fiber end surface dislocation of optical fiber is welded, and the input terminal of the output end connection spectrometer of gradual change multimode fibre passes through three-dimensional
Micro-displacement platform generates the pressure F1 that simulated environment generates.
As advanced optimizing for the utility model, the gradual change described in a kind of pressure fibre-optical sensing device of the utility model is more
Mode fiber side is provided with SPR sensorgram area I, and SPR sensorgram area I is made of fibre core, nanoporous metal membrane and environmental liquids, and fibre core is located at
The sensing groove bottom in SPR sensorgram area I, environmental liquids are located at the outer end in SPR sensorgram area I, and nanoporous metal membrane is located at fibre core and ring
Between the liquid of border, the pressure F1 that SPR sensorgram area I senses acts on nano metal film surface, direction vertically downward, perpendicular to receiving
Face where rice metal film.
As advanced optimizing for the utility model, the nanogold described in a kind of pressure fibre-optical sensing device of the utility model
It is golden film or silverskin or other nanometer metallic films for exciting SPR phenomenons to belong to film.
As advanced optimizing for the utility model, the environment liquid described in a kind of pressure fibre-optical sensing device of the utility model
Body is made of glycerine and distilled water, ranges of indices of refraction 1.333-1.385.
A kind of this pressure fibre-optical sensing device of the utility model has the beneficial effect that：
1. a kind of pressure fibre-optical sensing device of the utility model can real-time, efficiently generate optical fiber local environment
Pressure sensed, solve the problems, such as sensor local environment generate slight pressure be not easy find detection.
2. the pressure change that the sensitive zones of the utility model progress sensing device are subject to is detected.
3. the utility model can carry out sensing detection to the deformation of the environment residing for sensing device indirectly.
4. the utility model uses the sensing principle of optical fiber SPR sensor, high sensitivity.
5. the utility model making material is simply easily sought, operating process is simple, of low cost.
6. the utility model can be repeatedly used with continuous work, cost-effective, highly reliable.
Description of the drawings
The utility model is described in more detail with specific implementation method below in conjunction with the accompanying drawings.
Fig. 1 is a kind of structural schematic diagram of pressure fibre-optical sensing device of the utility model.
Schematic diagram when Fig. 2 is SPR sensorgram area 3-1 structure no pressures.
Schematic diagram when Fig. 3 has pressure for SPR sensorgram area 3-1 structures.
Fig. 4 is the structural schematic diagram of SPR sensorgram area 3-1.
Fig. 5 be by when different pressures in SPR sensorgram area 3-1 light transmission locus schematic diagram.
In figure：Light source 1；Light source tail optical fiber 2；I 2-1 of fibre core；Gradual change multimode fibre 3；SPR sensorgram area 3-1；II 3-1-1 of fibre core；
Nanoporous metal membrane 3-1-2；Environmental liquids 3-1-3；Three-dimensional micro-displacement platform 4；Spectrometer 5；I F1 of pressure；II F2 of pressure；It is different
Optical fiber transmission locus A, B when pressure, corresponding SPR incident angle αs, β；The fiber end face of light source tail optical fiber 2 and gradual change multimode fibre 3
Displacement L.
Specific implementation mode
Illustrate that present embodiment, the utility model relate to a kind of pressure fibre-optical sensing device energy with reference to Fig. 1,2,3,4,5
The enough pressure real-time, efficiently generated to optical fiber local environment senses, and it is micro- to solve the generation of sensor local environment
Small pressure is not easy the problem of finding detection.
In order to solve the above technical problems, a kind of pressure fibre-optical sensing device of the utility model is by light source 1, light source tail optical fiber 2, gradually
Become multimode fibre 3 and spectrometer 5 forms；
Light source 1 is the super continuum source of spectral width 450nm -1100nm, the excitation for generating excitation SPR phenomenons
Light, resonant wavelength ranging from 450nm -1100nm of traditional fiber spr sensor, the spectral width of light source 1 need to include
450nm -1100nm, at least 450nm -1100nm；Light source tail optical fiber 2 is used for transmission light source light spectrum；Gradual change multimode fibre 3 is used for
Sensed pressure changes, and I 3-1 of SPR sensorgram area is provided on gradual change multimode fibre 3, for exciting SPR phenomenons to generate SPR sensorgram light
Spectrum；Spectral width 450nm -1100nm of spectrometer 5, for receiving, showing and recording SPR sensorgram spectrum, the light of spectrometer 5
Spectral width includes at least spectral width 450nm -1100nm of light source 1, and guarantee can receive complete sensing spectrum；
The output end of light source 1 is connected to the input terminal of light source tail optical fiber 2, the output end fiber end face of light source tail optical fiber 2 and gradual change
The input end fiber end surface dislocation of multimode fibre 3 is welded, magnitude of misalignment L, and for the concrete numerical value of L, there is no limit ensure that light can be with
It is injected in gradual change multimode fibre 3 by light source tail optical fiber 2, the mistake of light source tail optical fiber 2 and gradual change multimode fibre 3 is completed by optical fiber bonding machine
Position welding, light source tail optical fiber 2 is fixed on by fiber clamp in optical fiber bonding machine with gradual change multimode fibre 3, by optical fiber bonding machine tune
To manual mode, by adjusting the X of optical fiber bonding machine, the upper and lower or left and right of Y-direction so that the output end optical fiber end of source tail optical fiber 2
Face and the input end fiber end surface dislocation of gradual change multimode fibre 3 are welded；The output end connection spectrometer 5 of gradual change multimode fibre 3
Input terminal generates the pressure F1 that simulated environment generates, the pressure F1 of I 3-1 of SPR sensorgram area sensings by three-dimensional micro-displacement platform 4
Act on the surfaces nanoporous metal membrane 3-1-2, direction vertically downward, perpendicular to face where nanoporous metal membrane 3-1-2, because gradual change is more
The transmission path A of the light of mode fiber 3 can be seen that the transmission locus of light, only strong direction be power F1 can be by the transmission of light
Track has A to change into B, if the direction of power is the direction of F2, the transmission locus of light will not change it is apparent, to SPR incidences
The contribution of the change at angle is smaller, therefore the direction that the direction of power is F1.
3 side of gradual change multimode fibre described in a kind of pressure fibre-optical sensing device of the utility model is provided with the sensing units SPR
I 3-1, I 3-1 of SPR sensorgram area are made of fibre core 3-1-1, nanoporous metal membrane 3-1-2 and environmental liquids 3-1-3, fibre core 3-1-1
In the sensing groove bottom of I 3-1 of SPR sensorgram area, environmental liquids 3-1-3 is located at the outer end of I 3-1 of SPR sensorgram area, nano metal
For film 3-1-2 between fibre core 3-1-1 and environmental liquids 3-1-3, the pressure F1 of I 3-1 of SPR sensorgram area sensings acts on nanometer
The surfaces metal film 3-1-2, direction vertically downward, perpendicular to face where nanoporous metal membrane 3-1-2, the I making sides 3-1 of SPR sensorgram area
Method is：One section of gradual change multimode fibre 3 of 40cm-50cm is chosen first, is clamped using optical fiber at the 1cm-2cm of optical fiber both ends and is divested coating
Layer, the mixed liquor of alcohol and ether is dipped with non-woven fabrics, covering is wiped repeatedly and is cleaned, by optical fiber cutter by both ends of the surface
It cuts smooth, chooses I 3-1 of fiber segment making SPR sensorgram area of intermediate 1cm-2cm long, the position of sensing unit is close proximity to gradual change
The input terminal of multimode fibre 3 so that sensing is better；Then, the coat that sensing unit optical fiber is divested by optical fiber pincers, uses
Optical fiber side throwing method or hydrofluoric acid etch remove the fibre cladding of this section of 1cm-2cm, so that it is leaked out fibre core, sensing groove is made,
The mixed liquor that alcohol and ether are dipped with non-woven fabrics is wiped repeatedly covering and is cleaned, this section of sensing groove notch is solid upward
It is scheduled on glass slide, each sensing groove bottom surface for leaking out fibre core is being plated by nano metal by small ion sputtering respectively
Film, film thickness selection can excite SPR phenomenons, take out；It places it in environmental liquids 3-1-3, I 3-1 of SPR sensorgram area has made
At.
Nanoporous metal membrane 3-1-2 described in a kind of pressure fibre-optical sensing device of the utility model is golden film or silverskin or other
The nanometer metallic film that SPR phenomenons can be excited, when nanoporous metal membrane 3-1-2 is golden film, experiment shows that golden film thickness is 50nm-
Excellent effect is sensed when 55nm.
Environmental liquids 3-1-3 described in a kind of pressure fibre-optical sensing device of the utility model is made of glycerine and distilled water,
Ranges of indices of refraction is 1.333-1.385, production method：By the proportion adjustment environmental liquids 3-1-3 for adjusting glycerine and distilled water
Refractive index, the value of refractive index detected by Abbe refractometer analyzer；The device is advanced optimized, environmental liquids 3-1-3 can
It is replaced by uv-curable glue by 1.333-1.385 by ranges of indices of refraction, the environmental liquids 3-1-3 of the sensing device is excellent by liquid
Turning to solid so that sensing device is more easily encapsulated and is used, and experiment shows the no too big difference of the sensitivity of this two methods,
Therefore in the case where sensing sensitivity remains unchanged, the reliability and practicability of sensing device are enhanced.
The operation principle of the utility model is：
The light of light source 1 is injected by light source tail optical fiber 2 in gradual change multimode fibre 3, light source tail optical fiber 2 and gradual change multimode fibre 3
End surface dislocation weld, therefore in gradual change multimode fibre 3 light transmission locus in the form of sine and cosine onwards transmission, gradual change multimode fibre
SPR sensorgram area 3-1 is provided on 3, when pressure F1 sizes are 0 Newtonian time, the light in gradual change multimode fibre 3 is passed with normal trace A
Defeated, in SPR sensorgram area, 3-1 excites SPR phenomenons, generates sensing spectrum, and benchmark sensing spectrum is obtained in spectrometer 5；As pressure F1
When size has certain value, the transmission locus of the light track A that changes becomes B in gradual change multimode fibre 3, therefore SPR incidence angles are by α
Become β, the frequency of the resonance light of SPR phenomenons is caused to change, therefore the position of the resonance trough of SPR sensorgram spectrum becomes
Change, therefore the dress realizes the pressure sensing generated to local environment.
Certainly, above description is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
The variations, modifications, additions or substitutions that the those of ordinary skill in art field is made in the essential scope of the utility model, also belong to
In the scope of protection of the utility model.
Claims (4)
1. a kind of pressure fibre-optical sensing device, it is characterised in that：The pressure fibre-optical sensing device is by light source (1), light source tail optical fiber
(2), gradual change multimode fibre (3) and spectrometer (5) composition；
Light source (1) is the super continuum source of spectral width 450nm -1100nm, the exciting light for generating excitation SPR phenomenons；
Light source tail optical fiber (2) is used for transmission light source light spectrum；Gradual change multimode fibre (3) changes for sensed pressure, and excitation SPR phenomenons generate
SPR sensorgram spectrum；Spectral width 450nm -1100nm of spectrometer (5), for receiving, showing and record SPR sensorgram spectrum；
The output end of light source (1) is connected to the input terminal of light source tail optical fiber (2), the output end fiber end face of light source tail optical fiber (2) with gradually
Become the input end fiber end surface dislocation welding of multimode fibre (3), the output end connection spectrometer (5) of gradual change multimode fibre (3)
Input terminal.
2. a kind of pressure fibre-optical sensing device according to claim 1, it is characterised in that：The gradual change multimode fibre
(3) side is provided with SPR sensorgram area I (3-1), SPR sensorgram area I (3-1) by fibre core (3-1-1), nanoporous metal membrane (3-1-2) and
Environmental liquids (3-1-3) form, and fibre core (3-1-1) is located at the sensing groove bottom in SPR sensorgram area I (3-1), environmental liquids (3-
1-3) it is located at the outer end of SPR sensorgram area I (3-1), nanoporous metal membrane (3-1-2) is located at fibre core (3-1-1) and environmental liquids (3-1-
3) between.
3. a kind of pressure fibre-optical sensing device according to claim 2, it is characterised in that：Nanoporous metal membrane (the 3-
1-2) it is golden film or silverskin or other nanometer metallic films for exciting SPR phenomenons.
4. a kind of pressure fibre-optical sensing device according to claim 2, it is characterised in that：Environmental liquids (the 3-1-
3) it is made of glycerine and distilled water, ranges of indices of refraction 1.333-1.385.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820101983.1U CN207730354U (en) | 2018-01-22 | 2018-01-22 | A kind of pressure fibre-optical sensing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820101983.1U CN207730354U (en) | 2018-01-22 | 2018-01-22 | A kind of pressure fibre-optical sensing device |
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| Publication Number | Publication Date |
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| CN207730354U true CN207730354U (en) | 2018-08-14 |
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| CN201820101983.1U Active CN207730354U (en) | 2018-01-22 | 2018-01-22 | A kind of pressure fibre-optical sensing device |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141292A (en) * | 2018-09-14 | 2019-01-04 | 重庆三峡学院 | A kind of fibre cladding SPR microbend sensor and its caliberating device |
| CN114061801A (en) * | 2021-11-17 | 2022-02-18 | 重庆三峡学院 | Optical fiber V-groove cladding SPR strain sensor and manufacturing method thereof |
-
2018
- 2018-01-22 CN CN201820101983.1U patent/CN207730354U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141292A (en) * | 2018-09-14 | 2019-01-04 | 重庆三峡学院 | A kind of fibre cladding SPR microbend sensor and its caliberating device |
| CN109141292B (en) * | 2018-09-14 | 2024-07-30 | 重庆三峡学院 | Optical fiber cladding SPR microbend sensor and calibration device thereof |
| CN114061801A (en) * | 2021-11-17 | 2022-02-18 | 重庆三峡学院 | Optical fiber V-groove cladding SPR strain sensor and manufacturing method thereof |
| CN114061801B (en) * | 2021-11-17 | 2023-09-26 | 重庆三峡学院 | Optical fiber V-groove type cladding SPR strain sensor and manufacturing method thereof |
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Effective date of registration: 20190717 Address after: 200 000 Lane 1, 777, West Ring Road, Xinzhuang Town, Minhang District, Shanghai Patentee after: Jianbao Optical Fibre Technology Co., Ltd., Shanghai Address before: No. 83, Xiabeishan Village, Zhanyuan Street, Jiaojiang District, Taizhou City, Zhejiang Province, 318000 Patentee before: Zhang Qian |