CN206531479U - It is a kind of to measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle - Google Patents
It is a kind of to measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle Download PDFInfo
- Publication number
- CN206531479U CN206531479U CN201720022051.3U CN201720022051U CN206531479U CN 206531479 U CN206531479 U CN 206531479U CN 201720022051 U CN201720022051 U CN 201720022051U CN 206531479 U CN206531479 U CN 206531479U
- Authority
- CN
- China
- Prior art keywords
- inclination angle
- fiber grating
- equi intensity
- optical fiber
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
It is a kind of to measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, including housing, the lower surface center of the housing is provided with mass ball, the mass ball can be slided in housing, the symmetrical affixed mutually isostructural V-arrangement metal structure in the both sides of the mass ball, the lower surface both sides of the housing are equipped with a mutually isostructural equi intensity cantilever, the V-arrangement metal structure and equi intensity cantilever are in contact, the equi intensity cantilever can be bent, a cantilever beam support column is respectively and fixedly connected with the outside of two equi intensity cantilevers, the structure of two cantilever beam support columns is identical and symmetrical, the opposite side of two cantilever beam support columns is fixed in the inner side of housing, fiber grating is adhesive with the equi intensity cantilever.The utility model can apply the electronic compass in aircraft, and the static practical field such as correction and limb motion attitude detection certainly of levelling bench is simple in construction not by electromagnetic interference, is easily installed, easily realizes networking.
Description
Technical field
The utility model is related to structure measurement of dip angle and technical field of optical fiber sensing, more particularly to one kind can measure two dimension and incline
The optical fiber grating inclination angle sensor at oblique angle.
Background technology
Application of the obliquity sensor in reality widely, various buildings such as mansion, bridge, slope and tunnel
Road will often monitor their angle of inclination, and the electronic compass in aircraft can also be applied in addition, levelling bench
The static practical field such as correction and limb motion attitude detection certainly.Maturation and development recently as optical fiber sensing technology,
Obliquity sensor based on fiber grating gradually causes the interest of people.Compared with traditional obliquity sensor, fiber grating
Obliquity sensor has that anti-electromagnetic interference capability is strong, simple in construction, measurement accuracy is high, long-time stability good, multiplexing capacity is strong, can
The advantages of to realize distributed on line monitoring, with wide day application prospect.
In Chinese invention patent CN201410477101.8, a kind of piston type mercury optical fiber Bragg raster inclination angle is disclosed
Sensor and its application method, the sensor construction include mercury metal-back, mercury, mercury support frame, shell, optical fiber and drawn
Portal, export optical fiber, pressure transmission piston, fiber grating, equi intensity cantilever, base etc., mercury is filled into full mercury metal-back
Interior, mercury is enclosed within mercury metal-back by pressure transmission piston, and mercury metal-back is fixed in shell by mercury support frame,
Shell is welded on above base, and pressure transmission piston connects the upper end of transmission rod, the lower end connection equi intensity cantilever of transmission rod
Free end, optical fiber Bragg raster is pasted onto two wall above and below equi intensity cantilever, and equi intensity cantilever right-hand member is fixed on cantilever beam
On support column, export optical fiber is drawn by optical fiber fairlead and is connected with external optical cable, and optical fiber fairlead is sealed with epoxy resin
Close, cantilever beam support column is welded on the bottom in shell.The obliquity sensor is according to being pasted onto two wall above and below equi intensity cantilever
Fiber grating center reflection wavelength difference and the relational expression of sensorless tilt can calculate the inclination angle of sensor measurand
Change.Although sensitivity and the measurement range of obliquity sensor can be improved, mercury expands with heat and contract with cold and volatile needs
Higher encapsulation technology.In addition, the obliquity sensor is complicated and relatively heavier, its practicality is influenceed.
The content of the invention
In view of this, embodiment of the present utility model provides a kind of fiber grating at the two-dimentional inclination angle of energy high-acruracy survey
Obliquity sensor.
Embodiment of the present utility model provides a kind of optical fiber grating inclination angle sensor at the two-dimentional inclination angle of energy measurement, including shell
Body, the lower surface center of the housing is provided with mass ball, and the mass ball can be slided in housing, the both sides pair of the mass ball
Claim affixed V-arrangement metal structure, the lower surface both sides of the housing are equipped with a mutually isostructural equi intensity cantilever, the V
Shape metal structure and equi intensity cantilever are in contact, and the equi intensity cantilever can be bent, the outside point of two equi intensity cantilevers
Not affixed cantilever beam support column, the structure of two cantilever beam support columns is identical and symmetrical, and the opposite side of two cantilever beam support columns is equal
It is fixed on the inner side of housing, the equi intensity cantilever and is adhesive with fiber grating.
Further, the drift angle and mass ball of the V-arrangement metal structure are affixed, and two base angles of V-arrangement metal structure are respectively with two
One end of equi intensity cantilever is in contact.
Further, the length of the equi intensity cantilever is adapted with the width of housing, equi intensity cantilever and two V-arrangements gold
Belong to each of structure while constituting an isosceles triangle, two base angles of isosceles triangle on the inside of housing with being in contact.
Further, each one obtuse triangle of composition on one side of the equi intensity cantilever and two V-arrangement metal structures.
Further, the cantilever beam support column constitutes T-shaped structure with equi intensity cantilever.
Further, the cantilever beam support column is fixed in the centre of equi intensity cantilever.
Further, the housing is the cuboid metal structure of upper surface opening.
Further, the V-arrangement metal structure is formed by a sheet metal along center bending fold.
Further, the equi intensity cantilever is made up of the good metal material of pliability, the two ends of equi intensity cantilever
Structure is identical and symmetrical.
Further, the fiber grating is pre-stretched before pasting.
Compared with prior art, the utility model is simple in construction, is easily installed and reuses, with very strong practicality
Property, it is applied widely；Using wavelength decoding technology, it is to avoid the influence of light source power and loss to measurement, it is adapted to long-term prison
Survey；Using equi intensity cantilever structure, the measurement range of sensor can be increased, vacantly installed moreover, avoiding fiber grating
The loss brought；The measurement at two-dimentional inclination angle is realized using mass ball and V-arrangement metal structure, sensitivity is high, and dynamic range is big, linearly
Spend, electromagnetism interference, distributed on line monitoring is realized in easy networking, it is adaptable to complicated rugged environment.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the utility model one balance.
Fig. 2 is the embodiment of the utility model one inclined structural representation westwards.
Fig. 3 is the structural representation of the embodiment south dip of the utility model one.
Each label in figure：1- housings, 2- mass balls, 3-V shapes metal structure, 4- equi intensity cantilevers, the support of 5- cantilever beams
Post, 6- fiber gratings, 7- export optical fiber.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is further described.
Fig. 1 is refer to, embodiment of the present utility model provides a kind of fiber grating inclination angle at the two-dimentional inclination angle of energy measurement
Sensor, including housing 1, in one embodiment, housing 1 are the cuboid metal structure of upper surface opening.
The lower surface center of housing 1 is provided with mass ball 2, and mass ball 2 can be slided in housing 1, and the both sides of mass ball 2 are symmetrical
Affixed V-arrangement metal structure 3, the lower surface both sides of housing 1 are equipped with a mutually isostructural equi intensity cantilever 4, V-arrangement metal knot
Structure 3 and equi intensity cantilever 4 are in contact, and equi intensity cantilever 4 can be bent, in one embodiment, and V-arrangement metal structure 3 passes through one
Root sheet metal is formed along center bending fold, and the drift angle and mass ball 2 of V-arrangement metal structure 3 are affixed, and the two of V-arrangement metal structure 3
The same one end of base angle respectively with two equi intensity cantilevers 4 is in contact, in a preferred embodiment, the length of equi intensity cantilever 4
It is adapted with the width of housing 1, each one isosceles triangle of composition on one side of the V-arrangement metal structure 3 of equi intensity cantilever 4 and two, etc.
Two base angles of lumbar triangle shape are in contact with the inner side of housing 1, each composition on one side of the V-arrangement metal structure 3 of equi intensity cantilever 4 and two
One obtuse triangle.
The outside of two equi intensity cantilevers 4 is respectively and fixedly connected with a cantilever beam support column 5, the structure phase of two cantilever beam support columns 5
Same and symmetrical, the opposite side of two cantilever beam support columns 5 is fixed in the inner side of housing 1, in one embodiment, equi intensity cantilever
4 are made up of the good metal material of pliability, and the two-end structure of equi intensity cantilever 4 is identical and intensity is identical, cantilever beam support
Post 5 is fixed in the centre of equi intensity cantilever 4, and cantilever beam support column 5 constitutes T-shaped structure with equi intensity cantilever 4.Equal strength is hanged
Fiber grating 6 is adhesive with arm beam 4, fiber grating 6 is pre-stretched before pasting.
Fig. 1 is refer to, when optical fiber grating inclination angle sensor is balanced, mass ball 2 is in poised state, does not slide.
When optical fiber grating inclination angle sensor is tilted, optical fiber grating inclination angle sensor is measurable to incline to four corners of the world either direction
Oblique inclination angle.
Fig. 2 is refer to, exemplified by westwards tilting, mass ball 2 is in housing 1 to optical fiber grating inclination angle sensor incline direction
Slide, i.e., mass ball 2 is westwards slided in housing, mass ball 2 drives the west side part of V-arrangement metal structure 3 to slide, V-arrangement
The whole slide of the west side part of metal structure 3 drives the equi intensity cantilever 4 contacted therewith to bend, equal strength cantilever
The bending of beam 4 drives the fiber grating 6 pasted thereon to stretch vertically, and the stretching of fiber grating 6 makes the center of fiber grating 6
Reflection wavelength changes, and the reflection wavelength variable quantity of fiber grating 6 is measured by fiber Bragg grating (FBG) demodulator, so as to calculate
Go out the inclination angle that optical fiber grating inclination angle sensor surveys object.
Tilt eastwards similar with inclined process westwards.
Fig. 3 is refer to, by taking south dip as an example, mass ball 2 is in housing 1 to optical fiber grating inclination angle sensor incline direction
Slide, i.e., mass ball 2 is slided southwards in housing, mass ball 2 drives the V-arrangement metal structure 3 in southern side to deform upon, southern side V-arrangement
The deformation of metal structure 3 drives the equi intensity cantilever 4 contacted therewith to bend, and the bending of equi intensity cantilever 4 drives
Paste the fiber grating 6 thereon respectively to stretch vertically, the stretching of fiber grating 6 makes the center reflection wavelength of fiber grating 6
Change, the reflection wavelength variable quantity of fiber grating 6 is measured by fiber Bragg grating (FBG) demodulator, so as to calculate optical fiber light
Pitch of shed sensor surveys the inclination angle of object.
Northwards the process of inclination and south dip is similar.
The utility model can apply the electronic compass in aircraft, static correction and the limb motion certainly of levelling bench
The practical fields such as attitude detection, it is simple in construction not by electromagnetic interference, it is easily installed, easily realizes networking；Using wavelength decoding skill
Art, it is to avoid the influence of light source power and loss to measurement, is adapted to long term monitoring；Using equi intensity cantilever structure, Ke Yizeng
The measurement range of large sensor, moreover, avoiding fiber grating vacantly installs the loss brought.
Herein, the noun of locality such as involved East, West, South, North is to be located at parts in accompanying drawing in figure and zero
The position of part each other is intended merely to the clear of expression technology scheme and conveniently come what is defined.It should be appreciated that the noun of locality
Use should not limit the claimed scope of the application.
In the case where not conflicting, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (10)
1. a kind of can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, including housing, it is characterised in that the housing
Lower surface center is provided with mass ball, and the mass ball can be slided in housing, the symmetrical affixed V-arrangement gold in both sides of the mass ball
Belong to structure, the lower surface both sides of the housing are equipped with a mutually isostructural equi intensity cantilever, the V-arrangement metal structure and wait
Intensity cantilever beam is in contact, and the equi intensity cantilever can be bent, and a cantilever beam is respectively and fixedly connected with the outside of two equi intensity cantilevers
Support column, the structure of two cantilever beam support columns is identical and symmetrical, and the opposite side of two cantilever beam support columns is fixed in the interior of housing
Fiber grating is adhesive with side, the equi intensity cantilever.
2. according to claim 1 can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, it is characterised in that described
The drift angle of V-arrangement metal structure and mass ball are affixed, one end phase of two base angles of V-arrangement metal structure respectively with two equi intensity cantilevers
Contact.
3. according to claim 2 can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, it is characterised in that described
The length of equi intensity cantilever is adapted with the width of housing, each composition on one side of equi intensity cantilever and two V-arrangement metal structures
One isosceles triangle, two base angles of isosceles triangle on the inside of housing with being in contact.
4. according to claim 3 can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, it is characterised in that described
Each one obtuse triangle of composition on one side of equi intensity cantilever and two V-arrangement metal structures.
5. according to claim 1 can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, it is characterised in that described
Cantilever beam support column constitutes T-shaped structure with equi intensity cantilever.
6. according to claim 1 can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, it is characterised in that described
Cantilever beam support column is fixed in the centre of equi intensity cantilever.
7. according to claim 1 can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, it is characterised in that described
Housing is the cuboid metal structure of upper surface opening.
8. according to claim 1 can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, it is characterised in that described
V-arrangement metal structure is formed by a sheet metal along center bending fold.
9. according to claim 1 can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, it is characterised in that described
Equi intensity cantilever is made up of the good metal material of pliability, and the two-end structure of equi intensity cantilever is identical and symmetrical.
10. according to claim 1 can measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle, it is characterised in that institute
Fiber grating is stated to be pre-stretched before pasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720022051.3U CN206531479U (en) | 2017-01-09 | 2017-01-09 | It is a kind of to measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720022051.3U CN206531479U (en) | 2017-01-09 | 2017-01-09 | It is a kind of to measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206531479U true CN206531479U (en) | 2017-09-29 |
Family
ID=59917219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720022051.3U Expired - Fee Related CN206531479U (en) | 2017-01-09 | 2017-01-09 | It is a kind of to measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206531479U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036769A (en) * | 2018-01-11 | 2018-05-15 | 盐城工学院 | A kind of distinguishable direction from temperature compensation fiber grating deviational survey sensor |
| CN108917656A (en) * | 2018-07-24 | 2018-11-30 | 蚌埠学院 | A kind of Multi-Axis Fiber Bragg Gratings inclination sensor |
| CN109668526A (en) * | 2019-01-29 | 2019-04-23 | 北京理工大学 | The method at the high-acruracy survey inclination angle based on optical transfer function |
| CN109945806A (en) * | 2019-04-15 | 2019-06-28 | 沈阳建筑大学 | A kind of two-dimensional fiber bragg grating obliquity sensor |
| CN110823122A (en) * | 2018-08-08 | 2020-02-21 | 武汉理工大学 | Bending curvature measuring device and method based on fiber bragg grating and elastic body |
-
2017
- 2017-01-09 CN CN201720022051.3U patent/CN206531479U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036769A (en) * | 2018-01-11 | 2018-05-15 | 盐城工学院 | A kind of distinguishable direction from temperature compensation fiber grating deviational survey sensor |
| CN108917656A (en) * | 2018-07-24 | 2018-11-30 | 蚌埠学院 | A kind of Multi-Axis Fiber Bragg Gratings inclination sensor |
| CN108917656B (en) * | 2018-07-24 | 2024-05-17 | 蚌埠学院 | Double-shaft fiber bragg grating inclination sensor |
| CN110823122A (en) * | 2018-08-08 | 2020-02-21 | 武汉理工大学 | Bending curvature measuring device and method based on fiber bragg grating and elastic body |
| CN109668526A (en) * | 2019-01-29 | 2019-04-23 | 北京理工大学 | The method at the high-acruracy survey inclination angle based on optical transfer function |
| CN109945806A (en) * | 2019-04-15 | 2019-06-28 | 沈阳建筑大学 | A kind of two-dimensional fiber bragg grating obliquity sensor |
| CN109945806B (en) * | 2019-04-15 | 2023-09-26 | 沈阳建筑大学 | Two-dimensional fiber bragg grating inclination sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206531479U (en) | It is a kind of to measure the optical fiber grating inclination angle sensor at two-dimentional inclination angle | |
| CN104764438B (en) | Distinguishable circumference deviational survey sensor based on fiber grating | |
| CN108007553B (en) | Small-size fiber grating two-dimensional vibration sensor | |
| CA2747236C (en) | Shape-acceleration measurement device and method | |
| CN204740026U (en) | Fiber grating clinometer | |
| CN104296856B (en) | Enhanced sensitivity platform optical fiber raster vibration sensor | |
| CN104279986B (en) | Piston type hydrargyrum optical fiber Bragg grating tilt angle sensor and using method thereof | |
| CN109945806B (en) | Two-dimensional fiber bragg grating inclination sensor | |
| CN104976990A (en) | Fiber bragg grating inclinometer | |
| CN103278845B (en) | Based on the optical fiber grating earthquake acceleration detector of combination cantilever girder construction | |
| CN203732039U (en) | Integrated temperature self-compensation fiber raster strain sensor | |
| CN204128889U (en) | A kind of beam bending experiment loading unit | |
| CN103148894A (en) | Angle stress sensor based on optical fiber Bragg gratings | |
| Li et al. | Analysis on strain transfer of surface-bonding FBG on Al 7075-T6 alloy host | |
| CN102175185A (en) | Fiber bragg grating tilt sensor and calibrating method thereof | |
| CN107131833B (en) | High precision optical fiber grating displacement sensor and method of the distribution with temperature-compensating | |
| Cui et al. | High resolution inclinometer based on vertical pendulum and fiber Bragg grating Fabry–Perot cavity | |
| CN205593685U (en) | A fiber grating soil pressure sensor for measuring soil pressure | |
| CN117889898A (en) | Fiber bragg grating sensor for strain and temperature double-parameter measurement | |
| CN110081839A (en) | A kind of fiber grating wide range obliquity sensor of cam structure | |
| CN204461363U (en) | A kind of material surface strain fiber grating reversing differential detecting sensor part | |
| CN209877907U (en) | Fiber grating wide-range inclination angle sensor with cam structure | |
| CN210268626U (en) | High-precision inclination measuring rod based on fiber bragg grating all-dimensional monitoring pile body | |
| Gao et al. | Fiber Bragg grating sensor combined with silicone compliant cylinder for orientation identification of three-component geophone | |
| CN208607249U (en) | A kind of fiber grating air monitoring sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170929 Termination date: 20180109 |