CN204963881U - Film optical fiber sensor - Google Patents
Film optical fiber sensor Download PDFInfo
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- CN204963881U CN204963881U CN201520565705.8U CN201520565705U CN204963881U CN 204963881 U CN204963881 U CN 204963881U CN 201520565705 U CN201520565705 U CN 201520565705U CN 204963881 U CN204963881 U CN 204963881U
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- optical filters
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Abstract
The utility model provides a film optical fiber sensor, including fixed bolster, optical fiber device, cantilever beam (or outstanding membrane) and position ball, its characterized in that: the fixed bolster has circular concave hole and step, and cantilever beam (or outstanding membrane) is fixed on the step of support, and the position ball is fixed on circular concave hole and can rotation regulation, the optical fiber device is fixed on the position ball, through rotation regulation position ball, can change the angle of optical fiber device for cantilever beam (or outstanding membrane). The utility model discloses make the angle of optical fiber device to adjust in a flexible way to avoid the temperature stability that uses colloid fixed fiber device, improve the sensor.
Description
Technical field
The utility model relates to a kind of Fibre Optical Sensor with membrane structure, can be used for detecting pressure, stress, strain and acceleration etc.
Background technology
Fibre Optical Sensor is take light as carrier, optical fiber is medium, perception and transmission outer signals, be applicable to the detection [IEEESensorsJournal of acceleration in the environment such as inflammable and explosive, high temperature and high pressure, ess-strain and vibration, vol.8, pp.1184-1193,2008], the monitoring in mine, ocean and civil construction is widely used in.
At present, Fibre Optical Sensor adopts optical fiber grating structure usually, but fiber-optic grating sensor needs tunable laser or spectroanalysis instrument etc. to monitor reflection wavelength, and therefore system price is expensive.Further, fiber grating pair responsive to temperature, the cycle of grating can be caused to change owing to expanding with heat and contract with cold, corresponding reflection wavelength also with temperature change, thus reduces accuracy of detection.For thin film type optical fiber sensor (AppliedOptics, vol.52, pp.4223-4227,2013.), then need the spacing and the alignment angle that regulate optical fibre device and film, need complicated processing step, and need to adopt colloid to fix optical fibre device.Colloid at high temperature easily softens, and its temperature stability is poor.
Therefore, researching and developing the Fibre Optical Sensor of temperature-resistant high-performance, low cost, is that wound of the present utility model grinds motivation.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of to temperature-insensitive, prepare simple, the tunable and thin film optical filters sensor of low cost.
The utility model provides a kind of thin film optical filters sensor, and as shown in Figure 1, its main technical schemes is:
A kind of thin film optical filters sensor, comprise fixed support, optical fibre device, semi-girder (or outstanding film) and orientation ball, it is characterized in that: fixed support is with circular shrinkage hole and step, semi-girder (or outstanding film) is fixed on the step of support, and the circular shrinkage hole that orientation ball is fixed on support can rotate adjustment; Optical fibre device is fixed on orientation ball, regulating orientation ball, can change the angle of optical fibre device relative to semi-girder (or outstanding film) by rotating.The utility model makes the angle of optical fibre device can flexible, and avoids the temperature stability that uses colloid fixed fiber device, improve sensor.
A kind of thin film optical filters sensor provided by the utility model, also comprises following attached technical scheme:
Wherein, optical fibre device is used for emission detection light and receives the detection light be reflected back from semi-girder (or outstanding film).
Wherein, described in circular shrinkage hole constant bearing ball, adopt two or more fixed screw.
Wherein, described orientation ball, be made up of part (or whole) spheroid and plane, part sphere wherein and shrinkage pool are fitted, and planar section wherein can be triangle, quadrilateral or polygon.
Wherein, described orientation ball, by regulating the degree of tightness of different fixed screw, can rotate in circular shrinkage hole.
Wherein, described orientation ball, its inside has aperture, in order to fixed fiber device.
Wherein, described optical fibre device, is selected from ordinary optic fibre, with lensed optical fiber, optical fiber, tapered fiber or photonic crystal fiber with collimating apparatus.
Wherein, described semi-girder or outstanding film, its material is selected from metal strain plate, plated in the unorganic glass of metallic film, semiconductive thin film or organic film any one.
Wherein, described semi-girder shape is selected from any one in trapezoidal, rectangle or taper.
Wherein, described semi-girder or outstanding film, under the effect of the pressure in the external world, strain, stress or acceleration, can produce deformation.
Principle of work of the present utility model: be provided with semi-girder (namely one end is fixed, the other end can free deformation) or outstanding film (namely the edge of film is fixed, middle part can deformation) near the end face of optical fibre device, optical fibre device injection light beam through semi-girder or outstanding film reflection after turn back in optical fibre device, and detect by photo-detector; For the orientation ball of fixed fiber device, by regulating fixed screw can rotate in circular shrinkage hole, incident angle and the reflection angle of light beam therefore can be changed flexibly.
Technique effect of the present utility model: Fibre Optical Sensor of the present utility model, utilizes multiple screw to be fixed on circular hole by orientation ball, by tightening or unscrewing different fixed screws, and can flexible rotating orientation ball.Therefore, avoid traditional colloid and fix the brought problem (after colloid solidification, cannot regulate) cannot rotating adjustment, and eliminate the problem of the temperature stability difference of colloid.
Accompanying drawing explanation
Fig. 1 is the schematic diagram (sectional view) of cantilever beam type thin film optical filters sensor;
1, optical fibre device; 2, orientation ball; 3, fixed screw; 4, fixed support; 5, semi-girder.
Fig. 2 is the schematic diagram (sectional view) of outstanding membranous type thin film optical filters sensor;
1, optical fibre device; 2, orientation ball; 3, fixed screw; 4, fixed support; 5, outstanding film.
Fig. 3 is the structural representation (planimetric map) of orientation ball.
21, the planar section of orientation ball; 22, the spherical part of orientation ball; 3, fixed screw
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail, it is pointed out that described embodiment is only intended to be convenient to understanding of the present utility model, and any restriction effect is not play to it.
See the schematic diagram that accompanying drawing 1 and Fig. 2 are a kind of thin film optical filters sensor of the present embodiment.A kind of thin film optical filters sensor, comprises optical fibre device 1, orientation ball 2, fixed screw 3, fixed support 4, semi-girder (or outstanding film) 5.Wherein one end of semi-girder 5 to be fixed on support 4, and the other end can free deformation; The edge of outstanding film 5 to be fixed on support 4, and middle part can deformation; There is the through hole run through at the middle part of orientation ball 2, and optical fibre device 1 can be filled in wherein, and fixing; The spherical part 22 of orientation ball is fitted with the shrinkage pool on fixed support 4, and orientation ball can rotate in shrinkage pool; Fixed screw 3 passes orientation ball 2 and is screwed in the screw on fixed support 4; By regulating the degree of tightness of different fixed screws 3, the angle of orientation ball 2 can be regulated, thus regulate optical fibre device 1 relative to the angle of outstanding film (or film) 5.
Contrasting therewith, traditional thin film optical filters sensor, is, after optical fibre device 1 is adjusted to required orientation, be fixed on support 4 with glue.After adhesive curing, optical fibre device just secures relative to the angle of film, cannot adjust knot, and high temperature can make colloid deliquescing, causes the temperature stability of device poor.
In sum, thin film optical filters sensor of the present utility model, is not only easy to regulate, and eliminates the problem that traditional colloid solidifies the temperature stability difference caused, have the advantage that structure is simple, volume is little, cost is low.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection domain; although done to explain to the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (7)
1. a thin film optical filters sensor, comprise fixed support, optical fibre device, elastic body, orientation ball, it is characterized in that: fixed support is with circular shrinkage hole and step, and elastic body is fixed on the step of support, the circular shrinkage hole that orientation ball is fixed on support can be carried out rotation and regulated; Optical fibre device is fixed on orientation ball, regulating orientation ball, can change optical fibre device relative to elastomeric angle by rotating.
2. a kind of thin film optical filters sensor according to claim 1, is characterized in that: described optical fibre device is used for emission detection light beam and receives the detecting light beam be reflected back from elastic body.
3. according to the arbitrary described a kind of thin film optical filters sensor of claim 1 or 2, it is characterized in that: described elastic body comprises elastic suspended film and elastic cantilever, under the effect of described elastic suspended film and the pressure of described elastic cantilever in the external world, stress, strain or vibration, elastic deformation can occur.
4. a kind of thin film optical filters sensor according to claim 1, it is characterized in that: described orientation ball is made up of spheroid and plane, part sphere wherein and shrinkage pool are fitted, and planar section is wherein polygon.
5. according to the arbitrary described a kind of thin film optical filters sensor of claim 1 or 4, it is characterized in that: described orientation ball adopts two or more screw to be fixed in circular shrinkage hole, by regulating the degree of tightness of different screw can rotational orientation ball.
6. according to the arbitrary described a kind of thin film optical filters sensor of claim 1 or 2, it is characterized in that: described optical fibre device is selected from ordinary optic fibre, with lensed optical fiber, optical fiber, tapered fiber or photonic crystal fiber with collimating apparatus.
7., according to the arbitrary described a kind of thin film optical filters sensor of claim 1 or 2, it is characterized in that: described elastomeric material is selected from the organic film of metal strain plate, the unorganic glass of plated film, the semiconductive thin film of plated film or plated film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520565705.8U CN204963881U (en) | 2015-07-28 | 2015-07-28 | Film optical fiber sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520565705.8U CN204963881U (en) | 2015-07-28 | 2015-07-28 | Film optical fiber sensor |
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| Publication Number | Publication Date |
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| CN204963881U true CN204963881U (en) | 2016-01-13 |
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| CN201520565705.8U Active CN204963881U (en) | 2015-07-28 | 2015-07-28 | Film optical fiber sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199361A (en) * | 2021-11-16 | 2022-03-18 | 大连理工大学 | Integrated optical fiber acoustic wave sensor |
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2015
- 2015-07-28 CN CN201520565705.8U patent/CN204963881U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199361A (en) * | 2021-11-16 | 2022-03-18 | 大连理工大学 | Integrated optical fiber acoustic wave sensor |
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