CN104166235B - Doppler laser radar single-lens optical scanner - Google Patents
Doppler laser radar single-lens optical scanner Download PDFInfo
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- CN104166235B CN104166235B CN201410427264.5A CN201410427264A CN104166235B CN 104166235 B CN104166235 B CN 104166235B CN 201410427264 A CN201410427264 A CN 201410427264A CN 104166235 B CN104166235 B CN 104166235B
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Abstract
The invention relates to a Doppler laser radar single-lens optical scanner which comprises an optical-electricity encoder, an electromotor, a speed reducer, a supporting frame, a shell top cover, a shell base, a coupler, an upper small bearing press ring, an upper small bearing, a driving gear, a lower small bearing, a lower small bearing ring, a large bearing top press ring, an upper large bearing, a driven gear, a lower large bearing, a large bearing bottom press ring, a zero passage sensor, a wedge-shaped lens, a wedge-shaped press ring and a lens press ring. According to the Doppler laser radar single-lens optical scanner, the single wedge-shaped lens with the high index of refraction is used for achieving deflection of a fixed angle of pitch, the wedge-shaped lens is rotated through a power mechanism so that an emitted light beam can be conically scanned around the optical axis of the emitted light beam, and scanning with the fixed angle of pitch on the light beam emitted by a Doppler laser radar is achieved.
Description
Art
The present invention relates to laser radar, particularly a kind of Doppler lidar list mirror optical scanner.
Background technology
Doppler lidar is the effective means that a kind of clear sky measures wind field.Winds retrieval is obtained, in measurement process
It is middle to need for transmitting light beam to do multiple directions scanning to obtain the radial direction wind speed of different directions, so as to be synthesized to wind speed using multipath
Winds retrieval.The device of generally light beam scanning has bimirror optical scanner, it by two scanning mirrors respectively around vertical axises and
Orientation and pitching angle sweep are realized in trunnion axis rotation.Have the disadvantage that light path folding causes Beam Wave-Front easily to distort, volume, quality take
Resource is big, does not apply on less resource platform.
The content of the invention
Present invention is primarily aimed at solving the problems, such as the rapidly, continuously light beam scanning of Doppler lidar, there is provided a kind of
Doppler lidar list mirror optical scanner.The optical scanner utilizes simple lens, by the certain inclination angle of light beam deviation, and around
Optical axis does the one-dimensional conical scan for rotating and realizing fixed angle.Its advantage is that optical wavefront distortion is little, without light path folding, volume
It is little, meet light beam scanning and beam quality control is required.
The technical solution of the present invention is as follows：
A kind of Doppler lidar list mirror optical scanner, its feature is, including：Photoelectric encoder, motor, subtract
Fast device, bracing frame, shell top cover, outer casing base, shaft coupling, upper little bearing pressure ring, upper little bearing, driving gear, under little bearing,
Under little bearing pressure ring, big bearing top pressure ring, upper big bearing, driven gear, lower big bearing, big bearing base pressure ring, zero passage sensor,
Wedge-shaped lens, wedge shape pressure ring and lens chuck ring；
The annexation of above-mentioned each part is as follows：
Described photoelectric encoder is fixed on the top of described motor, the power transmission shaft lower end of the motor with it is described
Decelerator connects, and the decelerator is fixed on described bracing frame, and the bracing frame is fixed in described shell top cover；
The rotary shaft upper and lower ends of described driving gear respectively with described upper little bearing and under little bearing be connected, and lead to
Cross described upper little bearing pressure ring little bearing pressure ring with to compress respectively, the rotary shaft upper and lower ends of described driven gear are distinguished
It is connected with described upper big bearing and lower big bearing, and is pressed respectively by described big bearing top pressure ring and big bearing base pressure ring
Tightly；
The inside of described shell top cover has cannelure, for described upper little bearing pressure ring, upper little bearing, big bearing top
Pressure ring and upper big bearing are embedded, and the inside of described outer casing base has cannelure, for described driving gear, under little bearing,
Under little bearing pressure ring, under little bearing, driven gear, lower big bearing and big bearing base pressure ring be embedded in, described shell top cover and outer
Shell base is fixedly connected up and down；
Through hole is provided with the side wall of described outer casing base, described zero passage sensor is fixed on shell through the through hole
On the inwall of base, the outer of described big bearing base pressure ring is provided with a projection, and described driven gear inside is hollow circuit cylinder
Shape, and inwall is provided with boss, places for described wedge-shaped lens, is sequentially placed described wedge on the wedge-shaped lens from the bottom to top
Shape pressure ring and lens chuck ring；
Described photoelectric encoder, motor and zero passage sensor distinguish external drive control device, described decelerator Jing
It is arranged on the shaft coupling inside described bracing frame to be connected with described driving gear.
Described driving gear and driven gear is engaged by gear and drives described wedge-shaped lens to rotate.
Described wedge-shaped lens use high-index material, and surface precision is within a quarter of scanning light beam wavelength.
Described wedge shape pressure ring is identical with the angle of wedge of wedge-shaped lens.
More than 1000 lines, the gear ratio of driving gear and driven gear is 1 for the resolution of described photoelectric encoder:4
~1:Between 10, to ensure that light beam points to control accuracy and slewing rate.
Described shell top cover and outer casing base circumference on be evenly equipped with multiple counterbore fixed bits, by screw by institute
The outer casing base stated and shell top cover connect, and collectively form the shell of whole scanning device.
Multiple fixed counterbore fixed bits are provided with the outer wall of described shell top cover and outer casing base.
Compared with prior art, the invention has the beneficial effects as follows：
1) light beam is formed into the fixed angle of pitch by a wedge-shaped lens fixed angle of turning back, realizes the taper of the fixed angle of pitch
Scanning.
2) small volume, light weight, power consumption is little to reduce the demand to system resource.、
3) it is stable, superior performance.
Description of the drawings
Fig. 1. the structural representation of Doppler lidar list mirror optical scanner.
Fig. 2. driver composition.
Fig. 3. Doppler lidar list mirror optical scanner sectional view.
Fig. 4. Doppler lidar list mirror optical scanner schematic diagram.
In figure：1 photoelectric encoder, 2 motor, 3 decelerators, 4 bracing frames, 5, counterbore fixed bit, 6 shell top covers, 7 shells
Base, 8 shaft couplings, little bearing pressure ring on 9, little bearing on 10,11 driving gears, little bearing under 12, little bearing pressure ring under 13,
14th, big bearing top pressure ring, big bearing on 15,16 driven gears, big bearing under 17,18 big bearing base pressure rings, 19 zero passage sensors,
20 fix the wedge-shaped lens of counterbore fixed bit 21,22 wedge shape pressure rings, 23 lens chuck rings, 24 incident beams, 25 rotations axes of symmetry, 26 light
Line scans track, 27 emergent rays.
Specific embodiment
With reference to embodiment and accompanying drawing, the invention will be further described, but should not limit the present invention's with this embodiment
Protection domain.
A kind of Doppler lidar optical scanner device, it is main to include supporting fixed system, light scanning lens, power
Drive system, the part of angle sensor four composition：
Fixed system is supported to include：Bracing frame 4, fixed bit counterbore 5, shell top cover 6, outer casing base 7, little bearing pressure on 9
Ring, under little bearing pressure ring 13, big bearing top pressure ring 14, big bearing base pressure ring 18, wedge shape pressure ring 22, lens chuck ring 23, fixed bit
Counterbore fixes 20.
Light scanning lens are mainly made up of 21 wedge-shaped mirrors.
Power drive system by motor 2, decelerator 3, shaft coupling 8, little bearing on 10, under the driving tooth of little bearing 12,11
Wheel, big bearing, the driven gear of lower big bearing 17,16 composition on 15.
Angle sensor is by photoelectric encoder 1,19 two element compositions of zero passage sensor.
The fixed decelerator 3 in the top of bracing frame 4, bottom is fixed in shell top cover 6 by 6 M4 screws.Shell top cover 6
Mode connects for screw is used with outer casing base 7 by being distributed in some fixed bit counterbores 5 of circumference.The lower limb of outer casing base 7 is furnished with
Several fixed bit counterbores are used for and outside structural member fastening.Upper and lower little bearing 10,12 inward flanges pass through interference tolerance fit
Be symmetrically mounted on the rotary shaft two ends of driving gear 11, then using upper little bearing pressure ring 9 and under the female thread of little bearing pressure ring 13
Two ends precession respectively from the rotary shaft of driving gear 11, compression.Up and down big bearing 15,17 inward flanges pass through tolerance interference fit pair
Claim installed in the rotary shaft two ends of driven gear 16, then using big bearing top pressure ring 14 and the big female thread of bearing base pressure ring 18 from
The precession of rotary shaft two ends, compression, it is ensured that longitudinal direction is without vibration.The annular of two kinds of radiuses is milled with inside shell top cover 6 and outer casing base 7
Groove, fixes the outward flange of little bearing 10,12 and big bearing 15,17, to ensure it radially without translation by tolerance interference fit.
The outer of big bearing base pressure ring 18 mills out the projection of semi-cylindrical 0.5mm, for stirring zero passage sensor 19.Driven gear
Often rotate one week, the projection will stir zero passage sensor, for confirming the zero of scanning light beam rotation direction.Wedge-shaped lens
21 angle of wedge is identical with the angle of wedge of wedge shape pressure ring 22, and both are fixed on driven gear by lens chuck ring 23 with merging by external screw thread
Inside.
Doppler lidar list mirror optical scanner assembling process is as follows：
First little about a pair bearings 10,12 in power drive system are installed to into the two ends of driving gear 11, using power
Square spanner by upper little bearing pressure ring 9, under little bearing pressure ring 13 bearing is fastened；Secondly by big about a pair bearings 15,17 and from
Moving gear 16 is assembled, and with big bearing top pressure ring 14, big bearing base pressure ring 18 will distinguish the fastening of big bearing 15,17.Then distinguish
By in the big a pair bearings press-in corresponding inner groovy of outer casing base 7 on upper little a pair bearings and gear wheel of little gear.Again
Shell top cover 6 is pressed into its interior grooves by person size bearing from top to bottom, and is compressed downwards until seamless with outer casing base 7
Gap, is fastenedly connected outer casing base 7 and shell top cover 6 by fixed bit counterbore 5 with screw.Next decelerator 3 is passed through into spiral shell
Nail is fixed on bracing frame 4, and is compressed the rotary shaft of driving gear and the connection of decelerator rotary shaft with shaft coupling.Finally by electricity
Machine and encoder are fixed on decelerator.So complete assembling.In the course of work, photoelectric encoder 1 is connected with the mains first,
Motor 2 accesses drive control device, and the holding wire of the holding wire of encoder and zero passage sensor 19 is accessed into drive control device.Open
After machine starts, system is initialized first, and its process is that scanning device is rotated one week, and zero passage sensor 19 sends Zero position signal extremely
Drive control device, such system establishes inertial coodinate system and " 0 " spends position.The lasing light emitter transmitting of Doppler lidar is a branch of
The laser beam 24 of collimation, the laser light incident forms emergent ray 27 to wedge-shaped lens 21 and by one design angle of deviation.With
The rotation of motor, drive system drives wedge-shaped lens to rotate around rotation axes of symmetry 25.The emergent ray, spatially will form
Conical scan region, forms on the ground a circular light scanning track.This completes the scanning of light beam.
Claims (6)
1. a kind of Doppler lidar list mirror optical scanner, it is characterised in that include：Photoelectric encoder (1), motor
(2), decelerator (3), bracing frame (4), shell top cover (6), outer casing base (7), shaft coupling (8), upper little bearing pressure ring (9), on
Little bearing (10), driving gear (11), under little bearing (12), under little bearing pressure ring (13), big bearing top pressure ring (14), upper big axle
Hold (15), driven gear (16), lower big bearing (17), big bearing base pressure ring (18), zero passage sensor (19), wedge-shaped lens
(21), wedge shape pressure ring (22) and lens chuck ring (23)；
The annexation of above-mentioned each part is as follows：
Described photoelectric encoder (1) is fixed on the top of described motor (2), the power transmission shaft lower end of the motor (2) with
Described decelerator (3) connection, the decelerator (3) is fixed on described bracing frame (4), and the bracing frame (4) is fixed on described
Shell top cover (6) on；
The rotary shaft upper and lower ends of described driving gear (11) respectively with described upper little bearing (10) and under little bearing (12)
Connection, and by described upper little bearing pressure ring (9), little bearing pressure ring (13) compresses respectively with, described driven gear (16)
Rotary shaft upper and lower ends be connected with described upper big bearing (15) and lower big bearing (17) respectively, and by described big bearing
Top pressure ring (14) is compressed respectively with big bearing base pressure ring (18)；
The inside of described shell top cover (6) has cannelure, for described upper little bearing pressure ring (9), upper little bearing (10), big
Bearing top pressure ring (14) and upper big bearing (15) are embedded, and the inside of described outer casing base (7) has cannelure, for described master
Moving gear (11), under little bearing (12), under little bearing pressure ring (13), driven gear (16), lower big bearing (17) and big bearing bottom
Pressure ring (18) is embedded in, and described shell top cover (6) is fixedly connected up and down with outer casing base (7)；
Through hole is provided with the side wall of described outer casing base (7), described zero passage sensor (19) is fixed on through the through hole
On the inwall of outer casing base (7), the outer of described big bearing base pressure ring (18) is provided with a projection, described driven gear (16)
Inside is hollow cylindrical, and inwall is provided with boss, is placed for described wedge-shaped lens (21), on the wedge-shaped lens (21) by
Under supreme be sequentially placed described wedge shape pressure ring (22) and lens chuck ring (23)；
Described photoelectric encoder (1), motor (2) and zero passage sensor (19) external drive control device respectively, described subtracts
The configured shaft coupling (8) internal in described bracing frame (4) of fast device (3) is connected with described driving gear (11).
2. Doppler lidar list mirror optical scanner according to claim 1, it is characterised in that described driving tooth
Wheel (11) and driven gear (16) are engaged by gear and drive described wedge-shaped lens (21) to rotate.
3. Doppler lidar list mirror optical scanner according to claim 1, it is characterised in that described wedge pressure
Ring (22) is identical with the angle of wedge of wedge-shaped lens (21).
4. Doppler lidar list mirror optical scanner according to claim 1, it is characterised in that described photoelectricity is compiled
More than 1000 lines, the gear ratio of driving gear (11) and driven gear (16) is 1 for the resolution of code device:4-1:Between 10, with
Ensure that light beam points to control accuracy and slewing rate.
5. Doppler lidar list mirror optical scanner according to claim 1, it is characterised in that in described shell
Multiple counterbore fixed bits (5) are evenly equipped with the circumference of top cover (6) and outer casing base (7), by screw by described outer casing base
With the connection of shell top cover, the shell of whole scanning device is collectively formed.
6. Doppler lidar list mirror optical scanner according to claim 1, it is characterised in that in described shell
The outer wall of top cover (6) and outer casing base (7) is provided with multiple fixed counterbore fixed bits (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410427264.5A CN104166235B (en) | 2014-08-27 | 2014-08-27 | Doppler laser radar single-lens optical scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410427264.5A CN104166235B (en) | 2014-08-27 | 2014-08-27 | Doppler laser radar single-lens optical scanner |
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| Publication Number | Publication Date |
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| CN104166235A CN104166235A (en) | 2014-11-26 |
| CN104166235B true CN104166235B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410427264.5A Active CN104166235B (en) | 2014-08-27 | 2014-08-27 | Doppler laser radar single-lens optical scanner |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63253916A (en) * | 1987-04-10 | 1988-10-20 | Hitachi Ltd | Optical scanner |
| CN102073186B (en) * | 2011-01-21 | 2013-02-13 | 哈尔滨工业大学 | Large-angle, continuous and high-resolution beam deflection scanning device based on liquid crystal optical phased array and scanning method |
| JP2012231911A (en) * | 2011-04-28 | 2012-11-29 | Olympus Corp | Optical scanner and scan type observation device |
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Effective date of registration: 20151022 Address after: 210038 A seat, Longgang Science Park, Heng Yuan Road, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu Applicant after: NANJING INSTITUTE OF ADVANCED LASER TECHNOLOGY Address before: 201800 Shanghai, Shanghai, 800-211 post office box Applicant before: SHANGHAI INSTITUTE OF OPTICS AND FINE MECHANICS CHINESE ACADEMY OF SCIENCES |
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Effective date of registration: 20160113 Address after: 210038, Longgang economic and Technological Development Zone, Nanjing, Nanjing Heng Road, science and Technology Park, building A Applicant after: NANJING MOVELASER TECHNOLOGY Co.,Ltd. Address before: 210038 A seat, Longgang Science Park, Heng Yuan Road, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu Applicant before: NANJING INSTITUTE OF ADVANCED LASER TECHNOLOGY |
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Denomination of invention: Doppler laser radar single-lens optical scanner Effective date of registration: 20180612 Granted publication date: 20170517 Pledgee: Bank of Jiangsu Limited by Share Ltd. Nanjing Maigaoqiao branch Pledgor: NANJING MOVELASER TECHNOLOGY Co.,Ltd. Registration number: 2018320000083 |
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Date of cancellation: 20191029 Granted publication date: 20170517 Pledgee: Bank of Jiangsu Limited by Share Ltd. Nanjing Maigaoqiao branch Pledgor: NANJING MOVELASER TECHNOLOGY Co.,Ltd. Registration number: 2018320000083 |
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Denomination of invention: Doppler laser radar single-lens optical scanner Effective date of registration: 20191030 Granted publication date: 20170517 Pledgee: Bank of Jiangsu Limited by Share Ltd. Nanjing Maigaoqiao branch Pledgor: NANJING MOVELASER TECHNOLOGY Co.,Ltd. Registration number: Y2019320000242 |
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Date of cancellation: 20201023 Granted publication date: 20170517 Pledgee: Bank of Jiangsu Limited by Share Ltd. Nanjing Maigaoqiao branch Pledgor: NANJING MOVELASER TECHNOLOGY Co.,Ltd. Registration number: Y2019320000242 |
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Denomination of invention: Single mirror optical scanner for Doppler lidar Effective date of registration: 20201026 Granted publication date: 20170517 Pledgee: Bank of Jiangsu Limited by Share Ltd. Nanjing Maigaoqiao branch Pledgor: NANJING MOVELASER TECHNOLOGY Co.,Ltd. Registration number: Y2020980007175 |
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Address after: Room 0601, Building C, Xingzhi Science Park, Xingzhi Road, Nanjing Economic and Technological Development Zone, Jiangsu 210046 Patentee after: Nanjing Mulai Laser Technology Co.,Ltd. Address before: 210038 building a, Longgang science and Technology Park, Hengyuan Road, Nanjing Economic and Technological Development Zone, Nanjing City, Jiangsu Province Patentee before: NANJING MOVELASER TECHNOLOGY Co.,Ltd. |
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Address after: 210000 Building B2, Hongfeng Science Park, Kechuang Road, Nanjing Economic and Technological Development Zone, Jiangsu Province Patentee after: Nanjing Mulai Laser Technology Co.,Ltd. Address before: Room 0601, Building C, Xingzhi Science Park, Xingzhi Road, Nanjing Economic and Technological Development Zone, Jiangsu 210046 Patentee before: Nanjing Mulai Laser Technology Co.,Ltd. |
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Date of cancellation: 20230329 Granted publication date: 20170517 Pledgee: Bank of Jiangsu Limited by Share Ltd. Nanjing Maigaoqiao branch Pledgor: NANJING MOVELASER TECHNOLOGY Co.,Ltd. Registration number: Y2020980007175 |