CN108534809B - A kind of a wide range of fibre-optical bending controllable device - Google Patents
A kind of a wide range of fibre-optical bending controllable device Download PDFInfo
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- CN108534809B CN108534809B CN201810316652.4A CN201810316652A CN108534809B CN 108534809 B CN108534809 B CN 108534809B CN 201810316652 A CN201810316652 A CN 201810316652A CN 108534809 B CN108534809 B CN 108534809B
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- 238000005452 bending Methods 0.000 title claims abstract description 61
- 239000000835 fiber Substances 0.000 claims abstract description 58
- 239000013307 optical fiber Substances 0.000 claims abstract description 46
- 238000009987 spinning Methods 0.000 claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000009021 linear effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/341—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells controlling the movement of a following part
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
This hair provides a kind of a wide range of fibre-optical bending controllable device, including swing offset unit, control unit and optical fiber fixed cell；Swing offset unit includes X, Y screw slide, stepper motor X, Y, Z, mobile platform X, Y and fiber spinning fixed plate.Fiber spinning fixed plate is set on stepper motor Z, for controlling the rotation angle of optical fiber；By the optical fiber middle section part that optical fiber fixed cell is fixed, keep coplanar with the optical fiber front section being placed in fiber spinning fixed plate；Optical fiber one end is connect with light source, and the other end is connect with spectrometer or light power meter；Device controls the movement of each stepper motor by control unit, and then adjusts fibre-optical bending degree.Meanwhile the length that by micrometer caliper, can manually adjust bending section carrys out semi-automatic change bending radius.The present invention is used to control the radius of curvature and bending angle of optical fiber in a big way, provides reference data for other performance parameters experiment of optical fiber curvature, bending angle.
Description
Technical field
The invention belongs to control panel technical fields, and in particular to a kind of a wide range of fibre-optical bending controllable device.
Background technique
The advantages that fibre optical sensor is light-weight because small in size, electromagnetism interference, the attention by more and more scholars.
Wherein fiber grating detects stress by the change in small-scale curvature；In large-scale curvature application, fiber grating
It can paste on gastroscope and detect the shape of gastroscope, realize the three-dimensional reconstruction of optical fiber shape；Fibre optical sensor is a wide range of curved
There are also data glove, either multimode sensitizing type intensity demodulation type fibre optical sensor for the Application in Sensing of bent angle, or are based on cloth
The data glove of glug optic fiber grating wavelength Demodulation Type fibre optical sensor, bending radius and bending angle are all in wide variation.
Angular range changes more than 90 degree, and radius of curvature minimum reaches 2-3cm.
In original detection technique, variation for small curvature is typically chosen and optical fiber is affixed on flexible iron plate, and two
End is fixed to measure using displacement platform, when measurement, as the variation of displacement platform will cause the position of non-sensor fibre
Variation is set, other errors are introduced.The method that small curvature range measures general selection standard cylindrical body, the disadvantage is that, bending angle
It is uncontrollable, and the points measured are limited, change the form that can all change sensor fibre every time, introduce other errors.
Summary of the invention
The purpose of the present invention is to provide a kind of a wide range of fibre-optical bending controllable devices.Realize that bending radius is adjusted on a large scale
Whole, bending angle changes from 0-180 degree.
At the same time, it keeps non-sensing section not will receive the interference of other factors in adjustment process, guarantees sensing unit
Duan Yufei sensing section is tangent always, and sensing unit is circular arc, avoids the loss of other non-sensings.
In order to achieve the above object, it devises sensing unit and arc-shaped is presented, the non-sensing unit of real-time ensuring and sensing unit are always
Tangent control program changes the rotation angle of fiber spinning fixed plate, to change the bending radius and bending angle of sensitive zones
Degree.The position of fiber spinning fixed plate is adjusted by adjusting mobile platform Y and mobile platform X realization, ensure that sensing section
Can be tangent in real time with non-sensing section, curved section is a circular arc.
The technical scheme adopted by the invention is that
A kind of a wide range of fibre-optical bending controllable device, including swing offset unit, control unit and optical fiber fixed cell,
It is characterized in that, the swing offset unit, including X screw slide, Y screw slide, stepper motor X, stepper motor Y, stepping
Motor Z, mobile platform Y, mobile platform X and fiber spinning fixed plate (8)；Wherein, X screw slide is fixed by mobile platform Y
In in Y screw slide, by stepper motor Y control its in Y screw slide it is vertically moving；Stepper motor Z passes through movement
Platform X is fixed in X screw slide, is controlled it in X screw slide by stepper motor X and is moved in the horizontal direction；Fiber spinning
Fixed plate (8) is set on stepper motor Z, for controlling the rotation angle of optical fiber；Pass through the optical fiber that optical fiber fixed cell is fixed
Middle section part keeps coplanar with the optical fiber front section being placed in fiber spinning fixed plate；Optical fiber one end is connect with light source, another
End is connect with spectrometer or light power meter；Device controls the movement of each stepper motor by control unit, and then adjusts optical fiber
Bending degree.
Further, the optical fiber front section setting micro-displacement in above-mentioned fiber spinning fixed plate adjusts unit, along optical fiber
Length direction carries out trace regulation.
Further, above-mentioned micro-displacement adjusts unit and is fixed in fiber spinning fixed plate, and micro-displacement adjusts the shifting of unit
Moved end is connect with light source.
Further, it is micrometer caliper that above-mentioned micro-displacement, which adjusts unit,.Wherein micrometer caliper scope of activities 5-30mm.
Further, above-mentioned optical fiber fixed cell includes fibre clip A, fibre clip B and positioning plate；Optical fiber middle section part difference
It is fixed on fiber spinning fixed plate (8) by fibre clip A and is fixed on positioning plate by fibre clip B.
Further, the stroke accuracy of above-mentioned screw slide is 0.1mm, and the precision of stepper motor Z is 0.18 degree of step angle.
Further, above-mentioned control unit includes step motor control plate and order transmitting terminal, by calculating fibre-optical bending
Angle and length, control stepper motor precisely adjust.
The invention has the benefit that
(1) control of bending angle 0-180.
(2) control of curvature of the bending radius from 0 to L/ π is realized.
(3) during being automatically brought into operation, arc-shaped is presented in bending section, remains bending section and un-flexed section namely senses
It is tangent always between section and non-sensing section, avoid the non-tangent bending loss for leading to bending and introducing.
(4) during bending, non-sensing section remains tight, will not shake, be bent other will not occur
Deformation, so that experimental result is not introduced remaining interference, avoid introducing other errors.
Detailed description of the invention
Fig. 1 is structure chart of the invention；
Fig. 2 is optical fiber original state figure；
Fig. 3 fibre-optical bending curvature and bending angle geometrical relationship figure；
In Fig. 1: 1X screw slide；2Y screw slide；3 stepper motor X；4 stepper motor Y；5 stepper motor Z；6 is mobile flat
Platform Y；7 mobile platform X；8 fiber spinning fixed plates；9 stepper motor shaft couplings；10 micrometer calipers；11LED light source；12 optical fiber；
13 positioning plates；14 fibre clip B；15 spectrometers or light power meter；16 step motor control plates；17 computer command transmitting terminals；18
Fibre clip A.
In Fig. 2, optical fiber is original state, and a represents the fixing end of optical fiber and light source；B represents rotation node；Ab sections of generations of line segment
Mass color source obtains straightway, and length D1 is a relatively fixed value；C stationary nodes；Bc sections of line segment are fibre-optical bending section, long
Degree is L；D represents the connection end of optical fiber and flange；Line segment cd indicates optical fiber fixed straight line section；Optical fiber is original state, a, b,
C, d are horizontal linears on same straight line；
In Fig. 3, at is after t moment sets radius of curvature R or bending angle, and a is in the position of t moment；Bt is t moment b
Position；Dx is that mobile platform X compares mobile distance with first state of value；Dy is that mobile platform Y compares movement with original state
Distance.
Specific embodiment
The application method of apparatus of the present invention are as follows: xy sliding platform initially arrives system zero point first, and stepper motor Z is returned to initially
Zero point, optical fiber is divided into leading portion, middle section, back segment at this time, i.e. light source obtains straightway, bending section, fixed straight line section.Initial position can
It so that three sections of optical fiber are in alignment, and is a horizontal linear, the central point of stepper motor Z and fiber spinning are solid at this time
The distance of the right edge of fibre clip A on fixed board is D1.The length L, L for measuring bending section are fibre clip A right edge and light
The length of optical fiber between fibre folder B left side edge inputs L by the end PC of computer, the state of this when is original state.Stepping
The step angle of motor Z is 0.18 degree, so, can be bent angle is 0-180 degree, 1000 groups of data that step-length is 0.18
Measurement.
Bending angle is set, can finding out radius of curvature R=L/ θ, wherein R is bending radius, and θ indicates bending angle (radian
Tabulation is shown).So it can be concluded that comparing with original state, the offset of Y-axis is dy, and wherein Y lead screw is to move down as positive direction.
The offset d x of x-axis, wherein X lead screw is to move right as positive value.It seeks shown in formula such as formula (1)
XY screw slide first moves X-axis, then moves Y-axis, and stepper motor Z, which rotates corresponding angle, later can control bending
The change of angle.While bending angle changes, bending radius is also constantly to change.If it is desired to when control curvature, then
θ, dx, dy can be calculated according to L=R θ, be solved by (1), can choose automatic adjustment, also can choose semi-automatic tune
Section.Automatic adjustment, computer command transmitting terminal input R or θ, calculate dy, dx automatically, and Y lead screw and X lead screw is made to carry out corresponding position
It moves.
Semi-automatic adjusting can be finely adjusted radius of curvature under stationary curved angle, can first open fibre clip A, adjust
Micrometer caliper is saved, pushing LED light source move distance is D, it is specified that pushing ahead as positive value, and promoting backward is negative value, then newly
L value be equal to original L value add D.It is closed fibre clip A.Change bending segment length, new L value input computer command is sent
End, according to formula (1), calculates new dx, dy, serial ports software is passed to step motor control plate, and XY displacement platform is displaced originally
On the basis of, carry out smaller amendment.To control bending radius.
Embodiment
Device is as shown in Figure 1, a kind of a wide range of fibre-optical bending controllable device, including swing offset unit, control unit
With optical fiber fixed cell, which is characterized in that the swing offset unit, including X screw slide 1, Y screw slide 2, stepper motor
X3, stepper motor Y4, stepper motor Z5, mobile platform Y6, mobile platform X7 and fiber spinning fixed plate 8；Wherein, X lead screw is sliding
Platform 1 is fixed in Y screw slide 2 by mobile platform Y6, controls it in Y screw slide 2 along vertical side by stepper motor Y4
To movement；Stepper motor Z5 is fixed in X screw slide 1 by mobile platform X7, and it is sliding in X lead screw to control it by stepper motor X3
It is moved in the horizontal direction on platform 1；Fiber spinning fixed plate 8 is set on stepper motor Z5, for controlling the rotation angle of optical fiber；
The optical fiber fixed cell includes fibre clip A18, fibre clip B14 and positioning plate 13；Optical fiber middle section part passes through fibre clip respectively
A18 is fixed in fiber spinning fixed plate 8 and is fixed on positioning plate 13 by fibre clip B14.Optical fiber one end and LED light source connect
It connects, the other end is connect with spectrometer or light power meter；Micrometer caliper is fixed in fiber spinning fixed plate, micrometer caliper
Mobile terminal connect with light source；Device controls the movement of each stepper motor by control unit, and then adjusts fibre-optical bending degree.
The length for determining bending section L first inputs L in computer command transmitting terminal, inputs bending angle θ, can calculate dx,
Dx, dy, θ are sent step motor control plate by dy, and the stepper motor X being arranged in X screw slide, which can rotate, to be made to be installed on X
The mobile platform X of lead screw carries out the displacement of dx, and the stepper motor being arranged in Y screw slide, which can rotate, makes to be mounted on Y lead screw cunning
The mobile platform Y of platform carries out the displacement of dy, and the stepper motor Z for being installed on slide unit X can rotate θ angle, it is ensured that bending section is one section
Circular arc, and remaining two sections of non-sensor fibre can be tangent with circular arc.The solution formula of dx, dy can be obtained from formula (1).If it is desired to
Bending angle changes from 0-180, directly inputs angle value.It realizes and automatically controls bending angle.If it is desired to radius of curvature R from
0 arrives L/ π, inputs R.
Semi-automatic realization curvature fine tuning, fixes a fibre-optical bending angle first, by micrometer caliper, makes the distance of D1
Reduce or increase Δ d, so that the length L for changing crooked sensory section increases or reduces Δ d, therefore, it is desirable to be sent out in computer command
Sending end inputs new L, then repeatedly above-mentioned steps of front, realizes the manual adjustable of curvature.The calculation formula of radius of curvature:
Certainly, if angle changes from 0-180, the reduction of exponential type can be presented in curvature.To realize curvature on a large scale certainly
It moves adjustable.
Claims (10)
1. a kind of a wide range of fibre-optical bending controllable device, which is characterized in that including swing offset unit, control unit and optical fiber
Fixed cell, which is characterized in that the swing offset unit, including X screw slide (1), Y screw slide (2), stepper motor X
(3), stepper motor Y (4), stepper motor Z (5), mobile platform Y (6), mobile platform X (7) and fiber spinning fixed plate (8)；Its
In, X screw slide (1) is fixed on Y screw slide (2) by mobile platform Y (6), controls it at Y by stepper motor Y (4)
It is vertically moving on thick stick slide unit (2)；Stepper motor Z (5) is fixed on X screw slide (1) by mobile platform X (7), by
Stepper motor X (3) controls it and moves in the horizontal direction on X screw slide (1)；Fiber spinning fixed plate (8) is set to stepping
On motor Z (5), for controlling the rotation angle of optical fiber；By the optical fiber middle section part that optical fiber fixed cell is fixed, and it is placed in light
Optical fiber front section in fibre rotation fixed plate (8) keeps coplanar；Optical fiber one end is connect with light source, the other end and spectrometer or
Light power meter connection；Device controls the movement of each stepper motor by control unit, and then adjusts fibre-optical bending degree.
2. a kind of a wide range of fibre-optical bending controllable device according to claim 1, which is characterized in that fiber spinning is fixed
Optical fiber front section setting micro-displacement on plate adjusts unit, carries out trace regulation along fiber length.
3. a kind of a wide range of fibre-optical bending controllable device according to claim 2, which is characterized in that micro-displacement adjusts single
Member is fixed in fiber spinning fixed plate, and the mobile terminal that micro-displacement adjusts unit is connect with light source.
4. a kind of a wide range of fibre-optical bending controllable device according to claim 2 or 3, which is characterized in that described is micro-
It is micrometer caliper that displacement, which adjusts unit,.
5. a kind of a wide range of fibre-optical bending controllable device according to claim 1 or 2 or 3, which is characterized in that the light
Fine fixed cell includes fibre clip A (18), fibre clip B (14) and positioning plate (13)；Optical fiber middle section part passes through fibre clip A respectively
(18) it is fixed on fiber spinning fixed plate (8) and is fixed on positioning plate (13) by fibre clip B (14).
6. a kind of a wide range of fibre-optical bending controllable device according to claim 4, which is characterized in that the optical fiber is fixed
Unit includes fibre clip A (18), fibre clip B (14) and positioning plate (13)；It is solid that optical fiber middle section part passes through fibre clip A (18) respectively
It is fixed on positioning plate (13) due on fiber spinning fixed plate (8) and by fibre clip B (14).
7. a kind of a wide range of fibre-optical bending controllable device described according to claim 1 or 2 or 3 or 6, which is characterized in that institute
The stroke accuracy for stating screw slide is 0.1mm, and the precision of stepper motor Z is 0.18 degree of step angle.
8. a kind of a wide range of fibre-optical bending controllable device according to claim 4, which is characterized in that the screw slide
Stroke accuracy be 0.1mm, the precision of stepper motor Z is 0.18 degree of step angle.
9. a kind of a wide range of fibre-optical bending controllable device according to claim 5, which is characterized in that the screw slide
Stroke accuracy be 0.1mm, the precision of stepper motor Z is 0.18 degree of step angle.
10. a kind of a wide range of fibre-optical bending controllable device, feature described according to claim 1 or 2 or 3 or 6 or 8 or 9
It is, described control unit includes step motor control plate and order transmitting terminal, by calculating the angle and length of fibre-optical bending,
Control stepper motor is precisely adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810316652.4A CN108534809B (en) | 2018-04-08 | 2018-04-08 | A kind of a wide range of fibre-optical bending controllable device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810316652.4A CN108534809B (en) | 2018-04-08 | 2018-04-08 | A kind of a wide range of fibre-optical bending controllable device |
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| Publication Number | Publication Date |
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| CN108534809A CN108534809A (en) | 2018-09-14 |
| CN108534809B true CN108534809B (en) | 2019-07-12 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112985291A (en) * | 2019-12-12 | 2021-06-18 | 中国矿业大学 | Optical fiber curvature sensor calibration control equipment |
| CN116793260B (en) * | 2023-07-01 | 2024-06-07 | 中国矿业大学 | Fiber bragg grating curvature sensing testing device and testing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5274226A (en) * | 1992-11-17 | 1993-12-28 | The Babcock & Wilcox Co. | Optical rotary microbend position sensors having a rotatable movable shaft |
| CN103261930A (en) * | 2010-12-20 | 2013-08-21 | 株式会社巴川制纸所 | Optical transmission medium bend working device and optical transmission medium bend working method |
| CN104506232A (en) * | 2014-12-15 | 2015-04-08 | 上海交通大学 | Band service optical fiber low-frequency modulation generation device on basis of macrobend loss |
| CN106053030A (en) * | 2016-08-05 | 2016-10-26 | 西安理工大学 | Electric control test device used for fiber bending loss research |
-
2018
- 2018-04-08 CN CN201810316652.4A patent/CN108534809B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5274226A (en) * | 1992-11-17 | 1993-12-28 | The Babcock & Wilcox Co. | Optical rotary microbend position sensors having a rotatable movable shaft |
| CN103261930A (en) * | 2010-12-20 | 2013-08-21 | 株式会社巴川制纸所 | Optical transmission medium bend working device and optical transmission medium bend working method |
| CN104506232A (en) * | 2014-12-15 | 2015-04-08 | 上海交通大学 | Band service optical fiber low-frequency modulation generation device on basis of macrobend loss |
| CN106053030A (en) * | 2016-08-05 | 2016-10-26 | 西安理工大学 | Electric control test device used for fiber bending loss research |
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