CN113281724A - Laser radar and collimation debugging device - Google Patents

Laser radar and collimation debugging device Download PDF

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Publication number
CN113281724A
CN113281724A CN202110509018.4A CN202110509018A CN113281724A CN 113281724 A CN113281724 A CN 113281724A CN 202110509018 A CN202110509018 A CN 202110509018A CN 113281724 A CN113281724 A CN 113281724A
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CN
China
Prior art keywords
fixedly connected
box
inner cavity
laser
collimation
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CN202110509018.4A
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Chinese (zh)
Inventor
田斌
察豪
李联
周孟龙
李德阳
孙立东
范润龙
陈子豪
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Naval University of Engineering PLA
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Individual
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Priority to CN202110509018.4A priority Critical patent/CN113281724A/en
Publication of CN113281724A publication Critical patent/CN113281724A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/497Means for monitoring or calibrating
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481Constructional features, e.g. arrangements of optical elements
    • G01S7/4811Constructional features, e.g. arrangements of optical elements common to transmitter and receiver

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention discloses a laser radar and collimation debugging device, which comprises a base, a fixing box, an adapter box and a transmitting shell, wherein the top of the base is fixedly connected with the bottom of the fixing box; the laser radar collimation and adjustment device comprises a fixed box, a laser emitter, a laser follower and a first CCD camera, wherein the left side between the top and the bottom of an inner cavity of the fixed box is fixedly connected with the laser emitter, the top and the bottom of the surface of the laser emitter are fixedly connected with the laser follower, and the right side between the top and the bottom of the inner cavity of the fixed box is fixedly connected with the first CCD camera. This laser radar and collimation debugging device can realize simple structure, and convenient operation is swift, can realize not receiving external weather influence can accomplish the collimation of high accuracy and adjust laser radar's transmitting system in the laboratory.

Description

Laser radar and collimation debugging device
Technical Field
The invention relates to the technical field of laser radar collimation adjustment and calibration, in particular to a laser radar and a collimation adjustment device.
Background
The laser radar is an active detection system which takes laser as a light source and remotely senses the physical or chemical characteristics of a target object by detecting a radiation signal of the interaction of the laser and the target object. Due to the development of laser radars toward miniaturization and improvement of reliability, the carriers of laser radars have been developed from ground bases to vehicles, ships, vehicles and satellites, and these laser radars have been widely used for detecting targets, atmospheric aerosols, visibility, atmospheric pollution monitoring, water vapor, ozone, atmospheric wind fields, atmospheric temperature and atmospheric density, and the like. With the continuous development of laser radar technology, the laser radar has wider application prospect in the fields of atmospheric science, environmental protection, meteorology and climate, atmospheric remote sensing and the like. Any laser radar comprises a transmitting system and a receiving system, and the light path collimation of a transmitting and receiving system must be ensured firstly to ensure that the laser radar works normally and effectively.
The adjustment method for laser radar collimation is roughly divided into manual adjustment and automatic adjustment: the manual adjustment requires that an operator has very rich adjustment experience, and also needs to refer to information such as waveform, intensity and the like of an echo signal, so that higher collimation precision is difficult to achieve; the automatic adjustment generally utilizes a CCD camera and an automatic adjusting frame to scan and track signals, so that the collimation effect is achieved, although higher collimation precision can be achieved, the development difficulty of an algorithm and a control system is higher, the scanning time is too long in actual operation, and the cost of a debugging device is also higher. And manual adjustment and automatic adjustment are affected by weather conditions and signal-to-noise ratio, and most laser radars can only perform collimation adjustment on a transmitting system at clear night.
The laser debugging of current laser radar is more complicated, and is just not influencing the use few again of using at laser radar body installation debugging equipment moreover to lead to laser radar to use all very complicacy before debugging at every turn, need use a large amount of auxiliary assembly moreover to go to assisting the debugging, this is unfavorable for people to use.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a laser radar and a collimation debugging device, and solves the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a laser radar and collimation debugging device comprises a base, a fixing box, an adapter box and a transmitting shell, wherein the top of the base is fixedly connected with the bottom of the fixing box, the top of the fixing box is fixedly connected with the adapter box, the top of the adapter box is fixedly connected with the bottom of the transmitting shell, and the middle part of the bottom of an inner cavity of the fixing box is fixedly connected with a refraction assembly;
the left side between the top and the bottom of the inner cavity of the fixed box is fixedly connected with a laser emitter, the top and the bottom of the surface of the laser emitter are fixedly connected with laser followers, and the right side between the top and the bottom of the inner cavity of the fixed box is fixedly connected with a first CCD camera;
sliding plates penetrate through the surfaces of the two sides of the adapter box through sealing sleeves, one end between the two sliding plates is fixedly connected with a far mirror frame and a near mirror frame respectively, the other sides of the two sliding plates are fixedly connected with pushing plates, the two sides of the bottom of the transmitting box are provided with sliding rails, the top of each pushing plate is connected with the corresponding sliding rail in a sliding manner, and one side of each pushing plate is fixedly connected with a handle;
the device comprises a transmitting shell, a beam expanding cylinder, a focusing device, a transmitting shell, a switching box and a second CCD camera, wherein the middle part of the top of the inner cavity of the transmitting shell is fixedly connected with a shearing interferometer, the bottom of the left side of the inner cavity of the transmitting shell is fixedly connected with a fixing frame, the surface of the fixing frame is fixedly connected with the beam expanding cylinder under the shearing interferometer, the bottom of the beam expanding cylinder is fixedly connected with the focusing device, the bottom of the focusing device sequentially penetrates through the transmitting shell and the switching box and extends to the inner cavity of the switching box, and the top of.
Preferably, the surface at the top of the fixing frame is fixedly connected with a first refraction plate through a rotating part, the middle part of one side of the first refraction plate is fixedly connected with a telescopic rod through a connecting shaft, and one end of the telescopic rod is fixedly connected with the left top of the inner cavity of the transmitting shell through the connecting shaft.
Preferably, a diaphragm is fixedly connected to the right side between the top and the bottom of the inner cavity of the launching shell, and launching ports penetrate through the top and the bottom of the right side of the launching shell.
Preferably, the top and the bottom of the left side of the inner cavity of the emission shell are fixedly connected with a power module and a controller respectively.
Preferably, the refraction subassembly includes the support to the bottom fixed connection of connecting piece and fixed box inner chamber is passed through to the surface of support, the surperficial fixed connection of support has the second refraction board to the left bottom fixed connection of fixed box inner chamber has the stopper, the top of stopper and the surface contact of support, moving part fixedly connected with hydraulic stem is passed through to the bottom on support right side, and moving part and the bottom sliding connection of fixed box inner chamber are passed through to the bottom of hydraulic stem.
Preferably, the output end of the controller is bidirectionally connected with a computer through a wire.
(III) advantageous effects
The invention provides a laser radar and a collimation debugging device. The method has the following beneficial effects:
(1) this laser radar and collimation debugging device can realize simple structure, and convenient operation is swift, can realize not receiving external weather influence can accomplish the collimation of high accuracy and adjust laser radar's transmitting system in the laboratory.
(2) This laser radar and collimation debugging device can let laser radar collimation work before operation to the straightness that hangs down that laser ray jetted out test, detects whether it is in the sufficient state of drooping completely, avoids follow-up because of the inconsistent light refraction partial deviation that leads to of angle, so lets calibration speed faster, and the precision of calibration is higher, and this people of being convenient for use.
(3) This laser radar and collimation debugging device lets laser radar's detection and transmission become simpler, and in the whole body that all merges into laser radar, let the abundant utilization that obtains in space to the realization lets laser calibration simpler, can measure under the prerequisite that does not influence normal use, makes people use more convenient.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is a schematic diagram of an experimental calibration structure according to the present invention;
FIG. 4 is a schematic view of the structure of a refractive element of the present invention;
FIG. 5 is a schematic view of the working state of the laser follower of the present invention;
FIG. 6 is a diagram illustrating a focus diffusion state according to the present invention.
In the figure, 1-base, 2-fixed box, 3-adapter box, 4-emission shell, 5-refraction component, 6-laser emitter, 7-first CCD camera, 8-sliding plate, 9-far lens frame, 10-near lens frame, 11-pushing plate, 12-handle, 13-shearing interferometer, 14-fixed frame, 15-beam expanding cylinder, 16-focusing device, 17-first refraction plate, 18-telescopic rod, 19-diaphragm, 20-emission port, 21-power module, 22-controller, 23-support, 24-second refraction plate, 25-hydraulic rod, 26-computer, 27-second CCD camera and 28-laser follower.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention provides a technical solution: a laser radar and collimation debugging device comprises a base 1, a fixing box 2, an adapter box 3 and a transmitting shell 4, wherein the top of the base 1 is fixedly connected with the bottom of the fixing box 2, the top of the fixing box 2 is fixedly connected with the adapter box 3, the top of the adapter box 3 is fixedly connected with the bottom of the transmitting shell 4, and the middle part of the bottom of an inner cavity of the fixing box 2 is fixedly connected with a refraction component 5;
the left side between the top and the bottom of the inner cavity of the fixed box 2 is fixedly connected with a laser emitter 6, the top and the bottom of the surface of the laser emitter 6 are both fixedly connected with a laser follower 28, and the right side between the top and the bottom of the inner cavity of the fixed box 2 is fixedly connected with a first CCD camera 7;
sliding plates 8 penetrate through the surfaces of the two sides of the adapter box 3 through sealing sleeves, one end between the two sliding plates 8 is fixedly connected with a far mirror frame 9 and a near mirror frame 10 respectively, the other sides of the two sliding plates 8 are fixedly connected with pushing plates 11, the two sides of the bottom of the transmitting box 4 are provided with sliding rails, the top of each pushing plate 11 is connected with the corresponding sliding rail in a sliding manner, and one side of each pushing plate 11 is fixedly connected with a handle 12;
the middle part at the top of the inner cavity of the transmitting shell 4 is fixedly connected with a shearing interferometer 13, the bottom of the left side of the inner cavity of the transmitting shell 4 is fixedly connected with a fixing frame 14, the surface of the fixing frame 14 is fixedly connected with a beam expanding barrel 15 under the shearing interferometer 13, the bottom end of the beam expanding barrel 15 is fixedly connected with a focusing device 16, the bottom end of the focusing device 16 sequentially penetrates through the transmitting shell 4 and the adapter box 3 and extends to the inner cavity of the adapter box 3, and the top of the right side of the inner cavity of the transmitting shell 4 is fixedly connected with a second CCD camera 27.
In the invention, the surface of the top of the fixed frame 14 is fixedly connected with a first refraction plate 17 through a rotating part, the middle part of one side of the first refraction plate 17 is fixedly connected with an expansion link 18 through a connecting shaft, and one end of the expansion link 18 is fixedly connected with the top on the left side of the inner cavity of the emission shell 4 through the connecting shaft.
In the present invention, a diaphragm 19 is fixedly connected to the right side between the top and the bottom of the inner cavity of the launching shell 4, and launching ports 20 penetrate through the top and the bottom of the right side of the launching shell 4.
In the invention, the top and the bottom of the left side of the inner cavity of the transmitting shell 4 are respectively and fixedly connected with a power supply module 21 and a controller 22.
In the invention, the refraction component 5 comprises a support 23, the surface of the support 23 is fixedly connected with the bottom of the inner cavity of the fixed box 2 through a connecting piece, the surface of the support 23 is fixedly connected with a second refraction plate 24, the bottom of the left side of the inner cavity of the fixed box 2 is fixedly connected with a limiting block, the top of the limiting block is in contact with the surface of the support 23, the bottom of the right side of the support 23 is fixedly connected with a hydraulic rod 25 through a movable piece, and the bottom end of the hydraulic rod 25 is in sliding connection with the bottom of the inner cavity of the fixed box 2 through the movable piece.
In the present invention, the output of the controller 22 is bidirectionally coupled to a computer 26 via a wire.
Principle of operation
Calibrating the vertical foot degree of a laser light path; the hydraulic rod 25 is started first, the hydraulic rod 25 is contracted to change the angle of the second refraction mirror 24, the laser emitted by the laser emitter 6 changes the angle through a beam device arranged at the port of the laser emitter, then the light beam enters a phase acquisition area of the second CCD camera 27 along with the light path emitted by the laser follower 28, then the light beam is displayed on a computer, the transverse distance between the emitting positioning points of the two laser follower 28 is observed, and whether the laser light path is inclined or not is determined after determining whether the laser light path is positioned at the center position of the transverse distance.
Whether the laser light path is in a focusing or diverging state is calibrated and measured; firstly, a first refraction plate 17 is adjusted through a telescopic rod 18, a laser beam can be directly emitted into a shearing interferometer 13, a laser emitter 6 emits laser, a second refraction mirror 24 is adjusted to enable the laser to vertically refract and upwards enter a focusing device 16 and an expanding beam barrel 15, a beam splitter is arranged on the expanding beam barrel, the aperture size of the beam splitter is adjusted to enable an imaged light spot to be captured by a first CCD camera 7 after passing through the shearing interferometer 13, an image formed by the first CCD camera 7 on a computer 26 is observed, the relative positions of generated interference fringes and a central black line on the shearing interferometer are adjusted, if lines are parallel, the light path of an emission system achieves an alignment effect, if the lines are crossed, the light path is in a focusing or diverging state (as shown in figure 6), at the moment, if the light path is in the focusing or diverging state, the distance between two lenses of a far lens frame 9 and a near lens frame 10 can be adjusted simultaneously through the focusing device 16, and the distance between the distance and the distance can be reduced to achieve the proper distance, thereby the light path of the emission system can achieve the collimation effect.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a laser radar and collimation debugging device, includes base (1), fixed box (2), adapter box (3) and transmission shell (4), the top of base (1) and the bottom fixed connection of fixed box (2), the top and the adapter box (3) fixed connection of fixed box (2), the top of adapter box (3) and the bottom fixed connection of transmission shell (4), its characterized in that: the middle part of the bottom of the inner cavity of the fixed box (2) is fixedly connected with a refraction component (5);
a laser emitter (6) is fixedly connected to the left side between the top and the bottom of the inner cavity of the fixed box (2), the top and the bottom of the surface of the laser emitter (6) are both fixedly connected with a laser follower (28), and a first CCD camera (7) is fixedly connected to the right side between the top and the bottom of the inner cavity of the fixed box (2);
sliding plates (8) penetrate through the surfaces of the two sides of the adapter box (3) through sealing sleeves, one end between the two sliding plates (8) is fixedly connected with a far mirror frame (9) and a near mirror frame (10) respectively, the other sides of the two sliding plates (8) are fixedly connected with pushing plates (11), sliding rails are arranged on the two sides of the bottom of the transmitting box (4), the top of each pushing plate (11) is connected with the corresponding sliding rail in a sliding mode, and a handle (12) is fixedly connected to one side of each pushing plate (11);
the transmission device is characterized in that a shearing interferometer (13) is fixedly connected to the middle of the top of an inner cavity of the transmission shell (4), a fixing frame (14) is fixedly connected to the bottom of the left side of the inner cavity of the transmission shell (4), a beam expanding cylinder (15) is fixedly connected to the surface of the fixing frame (14) and is located right below the shearing interferometer (13), a focusing device (16) is fixedly connected to the bottom of the beam expanding cylinder (15), the bottom of the focusing device (16) sequentially penetrates through the transmission shell (4) and the adapter box (3) and extends to the inner cavity of the adapter box (3), and a second CCD camera (27) is fixedly connected to the top of the right side of the inner cavity of the transmission shell (4).
2. The lidar and collimation debugging device of claim 1, wherein: the surface at mount (14) top is through rotating first refraction board (17) of a fixedly connected with to the middle part of first refraction board (17) one side is through connecting axle fixedly connected with telescopic link (18), the left top fixed connection of connecting axle and transmission shell (4) inner chamber is passed through to the one end of telescopic link (18).
3. The lidar and collimation debugging device of claim 1, wherein: the right side fixedly connected with diaphragm (19) between transmission shell (4) inner chamber top and the bottom to transmission shell (4) right side top and bottom all run through and have transmission port (20).
4. The lidar and collimation debugging device of claim 1, wherein: the top and the bottom of the left side of the inner cavity of the transmitting shell (4) are respectively and fixedly connected with a power module (21) and a controller (22).
5. The lidar and collimation debugging device of claim 1, wherein: refraction subassembly (5) include support (23) to the bottom fixed connection of connecting piece and fixed box (2) inner chamber is passed through on the surface of support (23), the fixed surface of support (23) is connected with second refraction board (24), and the left bottom fixedly connected with stopper of fixed box (2) inner chamber, the top of stopper and the surface contact of support (23), moving part fixedly connected with hydraulic stem (25) are passed through to the bottom on support (23) right side, and the bottom sliding connection of moving part and fixed box (2) inner chamber is passed through to the bottom of hydraulic stem (25).
6. The lidar and collimation debugging device of claim 1, wherein: the output end of the controller (22) is bidirectionally connected with a computer (26) through a lead.
CN202110509018.4A 2021-05-11 2021-05-11 Laser radar and collimation debugging device Pending CN113281724A (en)

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CN202110509018.4A CN113281724A (en) 2021-05-11 2021-05-11 Laser radar and collimation debugging device

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CN202110509018.4A CN113281724A (en) 2021-05-11 2021-05-11 Laser radar and collimation debugging device

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CN113281724A true CN113281724A (en) 2021-08-20

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JPH05149708A (en) * 1991-11-27 1993-06-15 Jasco Corp Method and device for deciding reference position for double-beam interferometer
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CN109581336A (en) * 2019-01-02 2019-04-05 宁波傲视智绘光电科技有限公司 A kind of laser radar transmitting collimation adjustment device and method
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Publication number Priority date Publication date Assignee Title
JPH05149708A (en) * 1991-11-27 1993-06-15 Jasco Corp Method and device for deciding reference position for double-beam interferometer
US20020033941A1 (en) * 2000-07-21 2002-03-21 Seward George H. Method and system for aligning an optical fiber delivery system
CN109562902A (en) * 2016-08-08 2019-04-02 株式会社尼康 Substrate board treatment and substrate processing method using same
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