CN107271142A - Real-time optical fiber positioning device and localization method based on center drilling type 4 quadrant detector - Google Patents
Real-time optical fiber positioning device and localization method based on center drilling type 4 quadrant detector Download PDFInfo
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- CN107271142A CN107271142A CN201710362698.5A CN201710362698A CN107271142A CN 107271142 A CN107271142 A CN 107271142A CN 201710362698 A CN201710362698 A CN 201710362698A CN 107271142 A CN107271142 A CN 107271142A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
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Abstract
The invention discloses a kind of real-time optical fiber positioning device based on center drilling type 4 quadrant detector, including：The astrology hot spot received from telescopic system；Convergent lens：For entering line convergence to astrology hot spot, the laser after convergence is irradiated on center drilling type 4 quadrant detector and forms hot spot；Center drilling type 4 quadrant detector：Center offers aperture, for determining spot center position, and spot center position is sent into optoelectronic position receiver afterwards；Optoelectronic position receiver：For receiving the spot center position that center drilling type 4 quadrant detector is sent, spot center position is sent to control platform afterwards；Control platform：For the position according to spot center position adjustment optical fiber；Optical fiber：Optical fiber one end is inserted in the central small hole of center drilling type 4 quadrant detector.The invention also discloses the method positioned using foregoing real-time optical fiber positioning device.The present invention is successfully realized the real-time closed-loop monitoring of optical fiber and fed back.
Description
Technical field
The present invention relates to fiber orientation technical field, more particularly to based on the real-time of center drilling type 4 quadrant detector
Optical fiber positioning device and localization method.
Background technology
Since the eighties in last century, optical fiber technology is gradually penetrated among astronomical observation, and astronomy enters " multiband, big
Sample, high information quantity " epoch, large-scale multi-object fiber spectrographs are toured the heavens the breach as astronomical observation, and the purpose is to obtain
Fetch by 100,000, million even necessarily in terms of celestial body spectrum, can obtain being imaged the more abundant day toured the heavens and can not provided
Body information.
Mainly there are the Ying Ao observatories of Australia equipped with multi objects fiber spectrograph telescope or the plan of touring the heavens in the world
(AAO) 2dF, AA Ω, 6dF, U.S. SDSS, the GAIA of European Space Agency, Japan SABURA etc..Domestic multi objects fiber spectrograph is hoped
Remote mirror has LAMOST telescopes.Wherein SDSS tour the heavens project galaxy formation and evolution in terms of achieve remarkable achievement,
The LAMOST of China is also just carrying out the fixed star sky patrol in phase milky way galaxy.
Among multi-object fiber spectrographs are toured the heavens, optical fibre positioning system occupies highly important status, the number of fiber orientation
Amount and accuracy directly influence the efficiency and quality of sky patrol.Ying Ao observatories 2dF projects optical fiber uses magnetic clasp surely
Positioning method, magnetic clasp positioning is that light path is turned into 90 ° by small prism to enter optical fiber incidence end, and one block of small magnetic is placed below prism
Stone, is adsorbed on iron-based focal plane substrate by mechanical arm, and optical fiber then lies on focal plane substrate incident light guiding to spectrum
In instrument.Its fiber orientation mode used of the SDSS digital sky surveys plan in the U.S. is carried out for the well plate method mode drilled by aluminium sheet
Fiber orientation is punched on the aluminium sheet of one piece of about 500 millimeters of diameter by coordinate set in advance, and it is that basis is waited to see that it, which punches coordinate,
Depending on Ce Tian areas celestial coordinates is by being converted on focal plane plate.The positioning method that LAMOST 4000 optical fiber are used is double
The parallel controllable optical fibre alignment system of swinging, in position fixing process, on the one hand optical fiber make center steering motion with eccentric stent, separately
On the one hand make again around eccentric axis of rotation in eccentric stent the optical fiber in eccentric gyration, motion process receive end face relative to
Telescope optic axis does not produce deflection, and is moved all the time on telescope focal plane, will not defocus.
Generally speaking, current optical fibre positioning system is not realized the real-time closed-loop monitoring of optical fiber successfully and fed back,
The demand of higher precision fiber orientation can not be met.
The content of the invention
Goal of the invention：It is an object of the invention to provide one kind by 4 quadrant detector center drilling, realizing that optical fiber connects
Connect and transmit the real-time optical fiber positioning device and localization method based on center drilling type 4 quadrant detector of spot signal.
Technical scheme：Real-time optical fiber positioning device of the present invention based on center drilling type 4 quadrant detector, bag
Include：
The astrology hot spot received from telescopic system；
Convergent lens：For entering line convergence to astrology hot spot, the laser after convergence is irradiated to the spy of center drilling type four-quadrant
Survey on device and form hot spot；
Center drilling type 4 quadrant detector：Center offers aperture, for determining spot center position, afterwards by hot spot
Center is sent to optoelectronic position receiver；
Optoelectronic position receiver：For receiving the spot center position that center drilling type 4 quadrant detector is sent, afterwards
Spot center position is sent to control platform；
Control platform：For the position according to spot center position adjustment optical fiber；
Optical fiber：Optical fiber one end is inserted in the central small hole of center drilling type 4 quadrant detector, another termination spectrometer.
Further, the center drilling type 4 quadrant detector determines spot center position by formula (1)
In formula (1),For m average value,For n average value,For p average value,
x0And y0It is the instantaneous value of spot center coordinate, σ2For the variance of two-dimensional Gaussian function；In the process, spot center point is limited
Position existIn region, the radius of the central small hole of open cell type 4 quadrant detector centered on wherein r.
Further, the size of the central small hole of center drilling type 4 quadrant detector is by center drilling type 4 quadrant detector
The distance between photosurface and optical fiber incidence end face, optics of telescope performance, dome seeing determine.
Further, the sunset glow real-time judge spot center position of four quadrants of center drilling type 4 quadrant detector is passed through
Put.
Positioned using the real-time optical fiber positioning device of the present invention based on center drilling type 4 quadrant detector
Method, the central coaxial of the center of center drilling type 4 quadrant detector central small hole and optical fiber is set, by control platform
It is set to carry out the data of center open cell type 4 quadrant detector the integration processing of once per second, real-time fitting three-dimensional Gaussian is bent
Face figure, and using the analysis completion technology of block image missing, the Gauss curved of missing is subjected to completion, with this final determination hot spot
Center, and in real time adjust center drilling type 4 quadrant detector focal plane angles and positions so that center drilling type four
The central small hole alignment spot center position of quadrant detector.
Beneficial effect：The invention discloses a kind of real-time optical fiber positioning device based on center drilling type 4 quadrant detector
And localization method, optical fiber is fixed by 4 quadrant detector center drilling, the coupling of more accurate astrology hot spot and optical fiber is realized
Positioning.Have the advantages that compared with prior art：One is proposed first based on center drilling type 4 quadrant detector
Optical fiber positioning device；Two be that open cell type 4 quadrant detector centre bore can just fix optical fiber, makes astrology hot spot and optical fiber more
Couple well, and the non-of 4 quadrant detector element after center drilling is solved using Gauss curve fitting algorithm combination image procossing
Mark sex chromosome mosaicism；Three be to be successfully realized the real-time closed-loop monitoring of optical fiber and feed back.
Brief description of the drawings
Fig. 1 be the specific embodiment of the invention in center drilling type 4 quadrant detector schematic diagram；
Fig. 1 (a) is the schematic diagram that astrology hot spot and center drilling type 4 quadrant detector center zero deflection sunset glow are fixed；
Fig. 1 (b) is that astrology hot spot and center drilling type 4 quadrant detector center have the schematic diagram that deviation sunset glow is fixed；
Fig. 2 be the specific embodiment of the invention in optical fiber positioning device structured flowchart；
Fig. 3 is the double back cyclone schematic diagram in the specific embodiment of the invention.
Embodiment
With reference to the accompanying drawings and detailed description, technical scheme is further introduced.
The specific embodiment of the invention discloses a kind of real-time fiber orientation based on center drilling type 4 quadrant detector
Device, as shown in Fig. 2 including：
The astrology hot spot 1 received from telescopic system；
Convergent lens 2：For entering line convergence to astrology hot spot 1, the laser after convergence is irradiated to center drilling type four-quadrant
Hot spot is formed on detector 3；
Center drilling type 4 quadrant detector 3：Center offers aperture, for determining spot center position, afterwards by light
Spot center is sent to optoelectronic position receiver 5；The schematic diagram of open cell type 4 quadrant detector 3, wherein Fig. 1 centered on Fig. 1
(a) schematic diagram fixed for astrology hot spot and the center zero deflection sunset glow of center drilling type 4 quadrant detector 3, Fig. 1 (b) is the astrology
There is the schematic diagram that deviation sunset glow is fixed at hot spot and the center of center drilling type 4 quadrant detector 3；
Optoelectronic position receiver 5：For receiving the spot center position that center drilling type 4 quadrant detector 3 is sent, it
Spot center position is sent to control platform 6 afterwards；
Control platform 6：For the position according to spot center position adjustment optical fiber 4, detailed process includes：Data Collection,
Gauss curve fitting, missing block image completion；
Optical fiber 4：The one end of optical fiber 4 is inserted in the central small hole of center drilling type 4 quadrant detector 3.
Wherein, center drilling type 4 quadrant detector 3 determines spot center position by formula (1)
The derivation of a following formula (1) is described below：
The Energy distribution of laser facula approximately meets dimensional gaussian distribution, and hot spot Luminance edge is fuzzy, therefore uses
Gauss curved fitting process based on gray scale determines spot center position.
If the hot spot intensity profile on center drilling type 4 quadrant detector 3 approximately meets two-dimensional Gaussian function：
In formula (2), x0, y0It is the instantaneous value of spot center coordinate, σ2For the variance of two-dimensional Gaussian function, with defocusing amount, thing
Relevant away from, focal length etc., A is undetermined coefficient, relevant with the property of hot spot.As can be seen from the above equation, peak value position is light
The center of spot.Above formula both sides are taken the logarithm：
Order
Former formula abbreviation is：
m(x2+y2)+nx+py-q=Inf (x, y) (5)
Using principle of least square method, formula (1) can be obtained by matrixing.
In present embodiment, highly sensitive center drilling type 4 quadrant detector 3 can record X, Y data, in
Heart open cell type 4 quadrant detector 3 is obtained after data, is transferred to optoelectronic position receiver 5, is carried out in control platform a series of
Later stage work, it is main to include two aspects：The fitting of three-dimensional Gaussian curved surface, the completion of missing image and the determination at center.
Because the sampling frequency of center drilling type 4 quadrant detector 3 is 2.5kHz, 2500 groups of numbers can be produced each second
According to data volume is larger, therefore, it is possible to the result being preferably fitted.Still further aspect, it is considered to which star spot is moved in 1 seconds
It is dynamic in small distance, therefore the influence of time span is equally smaller, therefore selected locating periodically is 1.0 seconds.What transmission per second was produced
The algorithm that 2500 groups of data enter pre-programmed mistake carries out three-dimensional Gaussian surface fitting, obtains the Gauss map of center circle domain missing
Picture.
Afterwards, three-dimensional Gaussian image enters the missing image completion stage.Because Gauss curved smoothness is fabulous, it can use
Gradient method is progressive close, and gradient is taken from each side of circle, the annular section that about 1 micron of forward prediction width, because perforate size is smaller,
About in 300-400 micron dimensions, thus by hundreds of time predictions can completion Gaussian image, run time is relatively fewer.
Finally, computer is analyzed the three-dimensional Gaussian image after improving, and luminous flux maximum is taken in limited range
Point (x0, y0) it is spot center position.It is driven by mechanical device, the adjustment alignment of focal plane, light spot received can be carried out in real time
Signal.
Mechanical device is using the similar double back cyclone of LAMOST telescopes, as shown in figure 3, device has two axles --- in
Heart gyroaxis and eccentric axis of rotation, focal plane rotated respectively with two axles can cover can be used for after larger area, coupling it is larger
The star spot signal acquisition in area sky day region.
Present embodiment is also disclosed using the real-time fiber orientation dress based on center drilling type 4 quadrant detector
The method positioned is put, the center of the central small hole of center drilling type 4 quadrant detector 3 and the central coaxial of optical fiber 4 are set
Put, control platform 6 is set to carry out the data of center open cell type 4 quadrant detector 3 to the integration processing of once per second, it is real
When be fitted three-dimensional Gaussian surface chart, and using the analysis completion technology of block image missing, the Gauss curved of missing is subjected to completion,
With this final center for determining hot spot, and the focal plane angles and positions of adjustment center drilling type 4 quadrant detector 3 in real time,
So that the central small hole alignment spot center position of center drilling type 4 quadrant detector 3.
Claims (5)
1. the real-time optical fiber positioning device based on center drilling type 4 quadrant detector, it is characterised in that：Including：
The astrology hot spot (1) received from telescopic system；
Convergent lens (2)：For entering line convergence to astrology hot spot (1), the laser after convergence is irradiated to center drilling type four-quadrant
Detector forms hot spot on (3)；
Center drilling type 4 quadrant detector (3)：Center offers aperture, for determining spot center position, afterwards by hot spot
Center is sent to optoelectronic position receiver (5)；
Optoelectronic position receiver (5)：For receiving the spot center position that center drilling type 4 quadrant detector (3) is sent, it
Spot center position is sent to control platform (6) afterwards；
Control platform (6)：For the position according to spot center position adjustment optical fiber (4)；
Optical fiber (4)：Optical fiber (4) one end is inserted in the central small hole of center drilling type 4 quadrant detector (3), another termination spectrum
Instrument.
2. the real-time optical fiber positioning device according to claim 1 based on center drilling type 4 quadrant detector, its feature
It is：The center drilling type 4 quadrant detector (3) determines spot center position by formula (1)
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In formula (1),For m average value,For n average value,For p average value,x0
And y0It is the instantaneous value of spot center coordinate, σ2For the variance of two-dimensional Gaussian function；In the process, spot center point is limited
Position existsIn region, the radius of the central small hole of open cell type 4 quadrant detector (3) centered on wherein r.
3. the real-time optical fiber positioning device according to claim 1 based on center drilling type 4 quadrant detector, its feature
It is：The size of the central small hole of center drilling type 4 quadrant detector (3) by center drilling type 4 quadrant detector (3) light
The distance between quick face and optical fiber incidence end face, optics of telescope performance, dome seeing are determined.
4. the real-time optical fiber positioning device according to claim 1 based on center drilling type 4 quadrant detector, its feature
It is：Pass through the sunset glow real-time judge spot center position of four quadrants of center drilling type 4 quadrant detector (3).
5. carried out using the real-time optical fiber positioning device according to claim 1 based on center drilling type 4 quadrant detector
The method of positioning, it is characterised in that：By in the center of center drilling type 4 quadrant detector (3) central small hole and optical fiber (4)
The heart is coaxially disposed, and control platform (6) is set to carry out once per second to the data of center open cell type 4 quadrant detector (3)
Integration is handled, real-time fitting three-dimensional Gaussian surface chart, and using the analysis completion technology of block image missing, the Gauss of missing is bent
Face carries out completion, with this final center for determining hot spot, and adjusts Jiao of center drilling type 4 quadrant detector (3) in real time
Face angles and positions so that the central small hole alignment spot center position of center drilling type 4 quadrant detector (3).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427097A (en) * | 2018-01-26 | 2018-08-21 | 深圳班翟机器人有限公司 | Linear array sensor devices laser positioning method, apparatus, terminal and computer readable storage medium |
| CN109061831A (en) * | 2018-09-19 | 2018-12-21 | 西安理工大学 | A kind of reflective aiming tracking system of wireless laser communication and laser aiming tracking |
| CN110940487A (en) * | 2018-09-25 | 2020-03-31 | 横河电机株式会社 | Measuring device and measuring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0367331A2 (en) * | 1988-10-29 | 1990-05-09 | Philips Patentverwaltung GmbH | Method and arrangement for the determination of the position of the optical axis of an optical fibre |
| CN1779418A (en) * | 2004-11-25 | 2006-05-31 | 电子科技大学 | Omnibearing self-aligning method for detector-optical fiber coupling |
| CN2935330Y (en) * | 2006-06-08 | 2007-08-15 | 湖北众友科技实业股份有限公司 | Photoelectric directional experiment instrument |
| CN201699014U (en) * | 2010-06-11 | 2011-01-05 | 西安电子科技大学 | Photoelectric detecting component for wireless laser communication |
| CN202903329U (en) * | 2012-10-15 | 2013-04-24 | 重庆航伟光电科技有限公司 | Four-quadrant light detector |
-
2017
- 2017-05-22 CN CN201710362698.5A patent/CN107271142B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0367331A2 (en) * | 1988-10-29 | 1990-05-09 | Philips Patentverwaltung GmbH | Method and arrangement for the determination of the position of the optical axis of an optical fibre |
| CN1779418A (en) * | 2004-11-25 | 2006-05-31 | 电子科技大学 | Omnibearing self-aligning method for detector-optical fiber coupling |
| CN2935330Y (en) * | 2006-06-08 | 2007-08-15 | 湖北众友科技实业股份有限公司 | Photoelectric directional experiment instrument |
| CN201699014U (en) * | 2010-06-11 | 2011-01-05 | 西安电子科技大学 | Photoelectric detecting component for wireless laser communication |
| CN202903329U (en) * | 2012-10-15 | 2013-04-24 | 重庆航伟光电科技有限公司 | Four-quadrant light detector |
Non-Patent Citations (2)
| Title |
|---|
| 唐彦琴等: "四象限探测器基于高斯分布的激光光斑中心定位算法", 《红外激光工程》 * |
| 黄诗丰: "基于四象限探测器的光纤定位技术研究", 《中国优秀硕士学位论文全文数据库工程科技辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427097A (en) * | 2018-01-26 | 2018-08-21 | 深圳班翟机器人有限公司 | Linear array sensor devices laser positioning method, apparatus, terminal and computer readable storage medium |
| CN108427097B (en) * | 2018-01-26 | 2020-06-16 | 深圳班翟机器人有限公司 | Linear array photosensitive device laser positioning method, device, terminal and computer readable storage medium |
| CN109061831A (en) * | 2018-09-19 | 2018-12-21 | 西安理工大学 | A kind of reflective aiming tracking system of wireless laser communication and laser aiming tracking |
| CN109061831B (en) * | 2018-09-19 | 2021-01-15 | 西安理工大学 | Wireless laser communication reflection type aiming tracking system and laser aiming tracking method |
| CN110940487A (en) * | 2018-09-25 | 2020-03-31 | 横河电机株式会社 | Measuring device and measuring method |
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