CN104375274B - A kind of lunar rover laser dot-matrix device based on fiber optic network - Google Patents
A kind of lunar rover laser dot-matrix device based on fiber optic network Download PDFInfo
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- CN104375274B CN104375274B CN201410601965.6A CN201410601965A CN104375274B CN 104375274 B CN104375274 B CN 104375274B CN 201410601965 A CN201410601965 A CN 201410601965A CN 104375274 B CN104375274 B CN 104375274B
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- optical fiber
- control circuit
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0905—Dividing and/or superposing multiple light beams
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0994—Fibers, light pipes
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- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
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Abstract
The invention discloses a kind of lunar rover laser dot-matrix device based on fiber optic network, by master backup two tail optical fiber output type laser instruments, control circuit, two-way drive circuit, two-way temperature control circuit, fiber optic splitters, 16 optical fiber collimators and casing composition.The light that active and standby two laser instruments send is through 2 × 16 type fiber optic splitters, and it is 1 that two-way laser first closes 2, is separated into 16 bundles, and every Shu Jiguang carries out optical alignment through the optical fiber collimator being arranged on casing.By adjusting optical fiber collimator installation site on casing and exit direction, the laser dot-matrix of different distributions feature can be generated.Present invention achieves small-sized lunar rover laser dot-matrix device, energy density height and uniform laser dot-matrix can be generated, solve the bottleneck problem such as laser dot-matrix device high reliability and complicated space environment adaptability.
Description
Technical field
The invention belongs to lunar rover design field, in particular it relates to a kind of lunar rover based on fiber optic network is used
Laser dot-matrix device.
Background technology
In order to realize meeting the laser dot-matrix of requirement, predominantly not light splitting and the light splitting two kinds of current technology scheme
Scheme.Not light splitting scheme uses many laser instrument outputs, the collimated outgoing of laser of every laser instrument output
Forming a hot spot, 16 dot matrix then need 16 laser instruments.The program needs bigger space to arrange 16
Laser instrument and corresponding drive and temperature control circuit, and there is no redundancy and backup.
The laser that one laser instrument exports is divided into some bundles by light splitting scheme, often restraints and collimates it through optical fiber collimator
Rear output forms a hot spot, and spectroscopic modes mainly uses the mode of lens arra and grating beam splitting to realize.Should
The lens of scheme employing and grating beam splitting, optical element volume is big, and the uniformity is poor, and laser is certainly
By space propagation, mutual crosstalk, antijamming capability is inadequate.
Summary of the invention
Present invention mainly solves technical problem is that: overcome existing optical-mechanical system or prism system light splitting not enough
Defect, it is provided that a kind of lunar rover laser dot-matrix device based on fiber optic network.Present invention achieves small-sized
Lunar rover laser dot-matrix device, produces under strict volume, weight and power consumption requirements and has specific distribution
Laser dot-matrix, the laser dot-matrix of generation contains the index point of feature distribution as camera, may be used for lunar rover
And other exterior planets detector automatic obstacle avoidings, it is also possible to for acquisition and the identification of target signature.
The technical solution used in the present invention includes:
A kind of lunar rover laser dot-matrix device based on fiber optic network, including: main tail optical fiber output type laser instrument and
Backup tail optical fiber output type laser instrument, control circuit, the first drive circuit, the second drive circuit, the first temperature control
Circuit, the second temperature control circuit, fiber optic splitter, 16 optical fiber collimators and casing, wherein, main tail
Fine output type laser instrument and backup tail optical fiber output type laser instrument, control circuit, the first drive circuit, second drive
Dynamic circuit, the first temperature control circuit, the second temperature control circuit, fiber optic splitter, and 16 optical fiber collimators are equal
It is assemblied in casing；First drive circuit and the first temperature control circuit control the work of main tail optical fiber output type laser instrument；
Second drive circuit and the second temperature control circuit control the work of backup tail optical fiber output type laser instrument；After powering on, the
One drive circuit and the work of the first temperature control circuit, control main tail optical fiber output type laser instrument luminous；Control circuit is adopted
Collect the output signal of photodetector in main tail optical fiber output type laser instrument, and by this output signal with control electricity
The signal of road internal preset compares, it is judged that main tail optical fiber output type laser instrument the most normally works, if just
Often, then it is left intact；If abnormal, then switch to the second drive circuit and the second temperature control circuit,
Backup tail optical fiber output type laser instrument is controlled luminous by the second drive circuit and the second temperature control circuit；Main tail optical fiber exports
The light that type laser instrument or backup tail optical fiber output type laser instrument send is divided into 16 bundles, every Shu Guangjing through fiber optic splitter
It is irradiated on lunar surface after crossing an optical fiber collimator collimation.
Further, it is characterised in that low-expansion alloy selected by the structural metallic materials of optical fiber collimator
4J32B。
Further, the angle between laser beam axis and the casing bottom surface of 16 optical fiber collimators of definition is pitching
Angle, the angle between laser beam axis and the casing front surface of 16 optical fiber collimators is azimuth, then: first
The angle of pitch of optical fiber collimator is 41.91 °, second and the 8th the angle of pitch of optical fiber collimator be 42.29 °,
The angle of pitch of the 9th and the tenth six fibers collimater is 47.32 °, the pitching of the 3rd to the 7th optical fiber collimator
Angle is 42.43 °, and the angle of pitch of the ten to ten five optical fiber collimator is 47.49 °；The first to ten six fibers is accurate
The azimuth of straight device is followed successively by 43.03 °, 51.05 °, 61.60 °, 74.87 °, 90 ° ,-74.87 °,
-61.60 ° ,-51.05 °, 40.84 °, 50.28 °, 63.51 °, 80.57 ° ,-80.66 ° ,-63.51
° ,-50.28 ° and-40.84 °.
Present invention advantage compared with prior art is:
1, the present invention selects laser instrument that tail optical fiber exports as light source, laser instrument output optical fibre and fiber optic splitter
Input end fiber welding, the laser of laser instrument output transmits in fiber optic splitter, fiber optic splitter output
Optical fiber ceramic contact pin is connected with optical fiber collimator, and laser exports through collimated, and light propagates whole process for closing
Environment, beam quality is not by external environmental interference, and reliability is high.
2, complete machine uses master backup design, can improve the reliability of system.
3, the power consumption needed for the sluggish type temperature control design of wide temperature, reduction system is taked.
4, by the synergy of each several part, system bulk, weight and power consumption can be minimized, and ensure light
The reliability of the most even system of power.Product has passed through the performance test under various environment, space flight mechanics ring
Border test and spacecraft heat environmental test are examined, and successful Application in the avoidance of CE-3 lunar rover detects, at it
In the fields such as the avoidance detection of his planetary probe and target signature identification, can directly carry out technology transplant,
There is good promotion prospect.
Accompanying drawing explanation
Fig. 1 is the composition diagram of the present invention；
Fig. 2 is the apparatus sketch of the present invention；
Fig. 3 a-Fig. 3 c is optical fiber coil direction schematic diagram；
Fig. 4 is the master backup switching principle figure of the present invention；
Fig. 5 is the temperature control circuit schematic diagram of the present invention；
Fig. 6 is the driving circuit principle figure of the present invention；
Fig. 7 is the laser emitting direction schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments to the lunar rover based on fiber optic network according to the present invention with swashing
Light dot-matrix device is further described in detail.
Laser dot-matrix device according to the present invention can be used for lunar rover, at strict volume, weight and power consumption requirements
Lower generation has the high brightness laser dot matrix of specific distribution, may be used for lunar rover and the detection of other exterior planets
Device automatic obstacle avoiding, it is also possible to for acquisition and the identification of target signature.
Should lunar rover laser dot-matrix device based on fiber optic network, by two tail optical fiber output type laser instruments of master backup,
Control circuit, the first and second drive circuits, the first and second temperature control circuits, fiber optic splitter, 16 light
Fine collimater and casing composition.The light that active and standby two tail optical fiber output type laser instruments send divides through 2 × 16 type optical fiber
Bundle device, first closing 2 is 1, is separated into 16 bundles, and every Shu Jiguang enters through the optical fiber collimator being arranged on casing
Row optical alignment.By adjusting collimater installation site on casing and exit direction, difference can be generated
The laser dot-matrix of distribution characteristics.Tail optical fiber output type laser instrument uses constant-current source precision control realization light power stabilising
Output, takes the wide temperature sluggish type temperature control design of uniqueness, is substantially reduced system power dissipation.
Specifically, as shown in Figure 1, Figure 2 and Figure 4, the first drive circuit and the first temperature control circuit control main
The work of tail optical fiber output type laser instrument；Second drive circuit and the second temperature control circuit control backup tail optical fiber output type
The work of laser instrument；After powering on, the first drive circuit and the work of the first temperature control circuit, control the output of main tail optical fiber
Type laser instrument is luminous；Control circuit gathers the output signal of the photodetector in main tail optical fiber output type laser instrument,
And the signal of this output signal with control circuit internal preset is compared, it is judged that main tail optical fiber output type laser
Device the most normally works, if normally, is then left intact；If abnormal, then switch to second and drive
Dynamic circuit and the second temperature control circuit, controlled backup tail optical fiber output type by the second drive circuit and the second temperature control circuit
Laser instrument is luminous；The light that main tail optical fiber output type laser instrument or backup tail optical fiber output type laser instrument send divides through optical fiber
Bundle device is divided into 16 bundles, and every Shu Guang is irradiated on lunar surface after an optical fiber collimator collimation.
Present invention achieves small-sized lunar rover laser dot-matrix device, energy density can be generated high and swash uniformly
Light dot matrix, solves the bottleneck problem such as laser dot-matrix device high reliability and complicated space environment adaptability.
2 × 16 type fused biconical taper formula fiber optic splitters are selected to carry out light splitting.The light that active and standby two laser instruments send
It is separated into 16 bundles after 2 × 16 type fiber optic splitters are combined into 1 bundle.Spectroscopical effeciency (the power output of beam splitter
And with the ratio of input power) be better than 90%, energy uniformity (16 bundle Output of laser peak power and least works
The ratio of rate) it is better than 1.3.Optical fiber is flexible material, can the most freely coil, each parts space
Arrange more flexible, be substantially reduced requisite space.
Select tail optical fiber output type laser instrument as light source, laser instrument output optical fibre and fiber optic splitter input
Fused fiber splice, the laser of laser instrument output transmit in fiber optic splitter, after through ceramic contact pin output, warp
Collimated exports, and it is enclosed environment that light propagates whole process, and beam quality is not by external environmental interference, reliability
High.
Use and the complicated high and low temperature environment of exterior planets detection to adapt to lunar rover, the metal knot of optical fiber collimator
Structure material selection low-expansion alloy 4J32B.
As shown in Fig. 3 a-Fig. 3 c, optical fiber is flexible material, can the most freely coil, fiber reel around
Use annular disk to coil, around with the figure of eight, the mode combined, be fixed partially over structure, significantly subtract
Mini system requisite space.
Bigger power consumption is needed in view of realizing high precision temperature control at wide temperature range, as it is shown in figure 5, this
The sluggish type temperature control design of wide temperature is taked in invention, starts temperature control work the most in extreme temperature conditions.Temperature control circuit
The operating temperature of its LD (semiconductor diode) is monitored by the thermistor in tail optical fiber output type laser instrument,
Temperature signal is converted into the signal of telecommunication, and carries out judging and calculation process.When the temperature of LD is less than+15 DEG C,
Temperature control circuit adds reverse biased current to TEC (semiconductor cooler) integrated in tail optical fiber output type laser instrument,
LD is heated；When the temperature of LD is higher than+36 DEG C, temperature control circuit is to integrated in tail optical fiber output type laser instrument
TEC adds forward bias current, to LD refrigeration cool-down.Temperature control circuit uses pid algorithm to control the output of TEC
Power, it is achieved the temperature of LD controls.This temperature control circuit is designed with less temperature control power and achieves LD
Active temperature.
As shown in Figure 6, owing to Output optical power and the electric current of LD are similar to linear relationship, its driving must be adopted
Use Constant Current-Source Design.System is once powered as 5.5V, in order to improve the efficiency driving power supply, uses BUCK herein
Type switch buck circuit, first drops to 2V by a supply voltage；Then power transistor, electric current control are used
Circuit processed and sample resistance, be converted into current source, current feedback and electricity by higher level BUCK switching type voltage source road
Flow control function realizes LD and drives the constant current in source, current stabilization output design.Do a series of anti-specially for LD
Protecting measure: Current limited Control completes the overcurrent protection measure of LD, delay protection function makes LD avoid electrostatic charge
Accumulation and voltge surge, soft start function avoid being formed in start process to LD inrush current shock, electricity
Operating voltage on pressure feedback monitoring LD, carries out overvoltage protection to LD.
In the lunar rover laser dot-matrix device according to the present invention, the laser beam axis of 16 optical fiber collimators of definition
And the angle between casing bottom surface is the angle of pitch, the laser beam axis of 16 optical fiber collimators and casing front surface it
Between angle be azimuth, then: the angle of pitch of the first optical fiber collimator is 41.91 °, second and the 8th light
The angle of pitch of fine collimater is 42.29 °, and the angle of pitch of the 9th and the tenth six fibers collimater is 47.32 °,
The angle of pitch of the 3rd to the 7th optical fiber collimator is 42.43 °, the angle of pitch of the ten to ten five optical fiber collimator
It it is 47.49 °；The azimuth of the first to ten six fibers collimater is followed successively by 43.03 °, 51.05 °, and 61.60
°, 74.87 °, 90 ° ,-74.87 ° ,-61.60 ° ,-51.05 °, 40.84 °, 50.28 °, 63.51
°, 80.57 ° ,-80.66 ° ,-63.51 ° ,-50.28 ° and-40.84 °.
As in figure 2 it is shown, Laser Slabs 12 is only used for the installation of tail optical fiber output type laser instrument and fixes, drive temperature control
Plate 11 includes all of circuit.Casing 10 is front and back's two parts, and previous section is used for fixing tail optical fiber output type
Laser instrument 6 and 7, optical fiber collimator 9 and fiber optic splitter 8, latter half is used for fixed drive control panel
11, front and back two parts fasten, and connect with screw and form an entirety.
Here, it should be noted that the content not described in detail in this specification, be those skilled in the art
It is capable of by the description in this specification and prior art, therefore, does not repeats.
The foregoing is only the preferred embodiments of the present invention, be not used for limiting the scope of the invention.Right
For those skilled in the art, on the premise of not paying creative work, the present invention can be made
Some amendments and replacement, all such modifications and replacement all should be contained within protection scope of the present invention.
Claims (3)
1. a lunar rover laser dot-matrix device based on fiber optic network, it is characterised in that including: main tail optical fiber
Output type laser instrument and backup tail optical fiber output type laser instrument, control circuit, the first drive circuit, the second driving
Circuit, the first temperature control circuit, the second temperature control circuit, fiber optic splitter, 16 optical fiber collimators and casing,
Wherein, main tail optical fiber output type laser instrument and backup tail optical fiber output type laser instrument, control circuit, the first driving electricity
Road, the second drive circuit, the first temperature control circuit, the second temperature control circuit, fiber optic splitter and 16 optical fiber
Collimater is all assemblied in casing；
First drive circuit and the first temperature control circuit control the work of main tail optical fiber output type laser instrument；Second drives
Circuit and the second temperature control circuit control the work of backup tail optical fiber output type laser instrument；
After energising, the first drive circuit and the work of the first temperature control circuit, control main tail optical fiber output type laser instrument and send out
Light；Control circuit gathers the output signal of the photodetector in main tail optical fiber output type laser instrument, and this is defeated
The signal going out signal and control circuit internal preset compares, it is judged that main tail optical fiber output type laser instrument is the most just
Often work, if normally, is then left intact；If abnormal, then switch to the second drive circuit and
Second temperature control circuit, is controlled backup tail optical fiber output type laser instrument by the second drive circuit and the second temperature control circuit and sends out
Light；
The light that main tail optical fiber output type laser instrument or backup tail optical fiber output type laser instrument send is divided into through fiber optic splitter
16 bundles, every Shu Guang is irradiated on lunar surface after an optical fiber collimator collimation.
Lunar rover laser dot-matrix device based on fiber optic network the most according to claim 1, its feature exists
In, low-expansion alloy 4J32B selected by the structural metallic materials of optical fiber collimator.
Lunar rover laser dot-matrix device based on fiber optic network the most according to claim 1, its feature exists
In, the angle between laser beam axis and the casing bottom surface of 16 optical fiber collimators of definition is the angle of pitch, 16
Angle between laser beam axis and the casing front surface of optical fiber collimator is azimuth, and front surface is i.e. along going out light light
That face of road upper casing outermost；Then: the angle of pitch of the first optical fiber collimator is 41.91 °, second and
The angle of pitch of eight optical fiber collimators is 42.29 °, and the angle of pitch of the 9th and the tenth six fibers collimater is
47.32 °, the angle of pitch of the 3rd to the 7th optical fiber collimator is 42.43 °, the ten to ten five optical fiber collimator
The angle of pitch be 47.49 °；
The azimuth of the first to ten six fibers collimater is followed successively by 43.03 °, 51.05 °, 61.60 °,
74.87 °, 90 ° ,-74.87 ° ,-61.60 ° ,-51.05 °, 40.84 °, 50.28 °, 63.51 °,
80.57 ° ,-80.66 ° ,-63.51 ° ,-50.28 ° and-40.84 °.
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| CN201410601965.6A CN104375274B (en) | 2014-10-30 | 2014-10-30 | A kind of lunar rover laser dot-matrix device based on fiber optic network |
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| CN104375274B true CN104375274B (en) | 2016-08-24 |
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| CN106093911A (en) * | 2016-07-25 | 2016-11-09 | 北京理工大学 | A kind of dot matrix emitting-receiving system for Non-scanning mode laser imaging |
| CN108459382B (en) * | 2017-02-17 | 2021-02-12 | 光环科技股份有限公司 | High-speed multi-channel optical transceiver module |
| CN113869196B (en) * | 2021-09-27 | 2022-04-19 | 中远海运科技股份有限公司 | Vehicle type classification method and device based on laser point cloud data multi-feature analysis |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102466883A (en) * | 2010-11-12 | 2012-05-23 | 北京控制工程研究所 | Laser dot matrix device for obstacle avoidance of lunar rover |
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| JP4214656B2 (en) * | 2000-03-29 | 2009-01-28 | セイコーエプソン株式会社 | Projection display |
| US8248700B1 (en) * | 2008-10-20 | 2012-08-21 | Lockheed Martin Corporation | Systems and methods for coherent beam combining of laser arrays |
| US8861082B2 (en) * | 2012-02-21 | 2014-10-14 | Corning Incorporated | Method and apparatus for combining laser array light sources |
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| CN102466883A (en) * | 2010-11-12 | 2012-05-23 | 北京控制工程研究所 | Laser dot matrix device for obstacle avoidance of lunar rover |
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