CN209784528U - laser radar and laser vertical calibration device thereof - Google Patents
laser radar and laser vertical calibration device thereof Download PDFInfo
- Publication number
- CN209784528U CN209784528U CN201921925536.9U CN201921925536U CN209784528U CN 209784528 U CN209784528 U CN 209784528U CN 201921925536 U CN201921925536 U CN 201921925536U CN 209784528 U CN209784528 U CN 209784528U
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- laser
- inner ring
- outer ring
- axis
- fixed base
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/497—Means for monitoring or calibrating
- G01S7/4972—Alignment of sensor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
the application provides a laser vertical calibration device, which is used for the vertical calibration of laser of a laser radar; the laser radar comprises a fixed base and a laser; the laser vertical calibration device comprises a universal moving part; the universal moving part comprises an outer ring part and an inner ring part, and the inner ring part is connected with the outer ring part in a rotating mode in the X-axis direction; the outer ring component is rotationally connected with the fixed base in the Y-axis direction; the inner ring component is fixedly connected with the laser below the inner ring component, and the axis of a laser emitting opening of the laser coincides with the axis of the inner ring component. The laser wind-measuring radar leveling device has the advantages of simple structure, high accuracy, low cost, good stability and the like, and can solve the problems that the laser wind-measuring radar needs to be subjected to complex leveling work before being used, the accuracy is inaccurate due to manual adjustment and the like. In addition, this application still provides a laser radar.
Description
Technical Field
The application relates to the technical field of laser radars, in particular to a laser vertical calibration device. The application also relates to a lidar.
Background
The laser wind radar is a detection system which uses laser as a detection medium, coherent detection as a frequency discrimination means, optical fibers as optical channels among devices, aerosol particles with the diameter of 0.01-1 mu m in the atmosphere as a detection target and remotely senses atmospheric wind field information. The system mainly comprises an optical system, a laser, a detector, a data processing system and the like. The working process is as follows: the laser sends high-energy laser to the atmosphere, the telescope (optical system) receives echo energy of the atmosphere backscattered laser, the detector receives the echo energy of the laser and responds, and the data processing system analyzes the echo data to obtain wind field information including wind direction, wind speed, wind shear cloud and the like.
The laser wind measuring radar measures wind field information, particularly wind speed and wind direction, so that the initial laser light emitting direction, which is generally perpendicular to the ground, must be calibrated at the beginning of measurement. According to the existing laser wind-finding radar, a circular window at the top is a light-emitting window, and the anchor consists of 4 movable anchors with adjustable heights. Before the installation is used, need use the spirit level, make the light-emitting window completely level, light-emitting direction is perpendicular upwards through adjusting 4 lower margins. Because perpendicularity directly affects the accuracy of measured wind field information, existing lidar systems must be calibrated before use. The maneuverability of the laser radar is greatly reduced, the use complexity is greatly increased, the measured wind field information is greatly influenced by the calibration degree, and the existing laser radar cannot realize quick response and high maneuverability. Especially in the aspect of military confrontation, the requirement of competing for seconds on a battlefield cannot be met, so that the military aspect now mostly utilizes microwave radars to measure wind field information, but the microwave divergence is good, the microwave radars are easy to intercept, and the exposure risk is undoubtedly increased. The laser radar emits invisible mid-infrared laser beams, the beam divergence is extremely small, the directivity is strong, and the detection and the discovery are almost impossible, so the maneuverability of the laser radar is very important.
SUMMERY OF THE UTILITY MODEL
The application provides a perpendicular calibrating device of laser, it has advantages such as simple structure, accuracy height, with low costs, stability are good, can solve laser anemometry radar and need carry out complicated levelling work before using to and the inaccurate scheduling problem of precision that manual regulation can bring. In addition, this application still provides a laser radar.
In order to solve the above technical problem, a first aspect of the present application provides a laser vertical calibration apparatus for vertical calibration of laser of a laser radar; the laser radar comprises a fixed base and a laser; the laser vertical calibration device comprises a universal moving part;
the universal moving part comprises an outer ring part and an inner ring part, and the inner ring part is connected with the outer ring part in a rotating mode in the X-axis direction; the outer ring component is rotationally connected with the fixed base in the Y-axis direction;
The inner ring component is fixedly connected with the laser below the inner ring component, and the axis of a laser emitting opening of the laser coincides with the axis of the inner ring component.
Optionally, one of the outer ring part and the inner ring part is provided with a first shaft hole, and the other is provided with a first bearing matched with the first shaft hole.
Optionally, the first shaft hole is opened on the outer ring component, and the first bearing is opened on the inner ring component.
Optionally, one of the fixed base and the outer ring member is provided with a second shaft hole, and the other is provided with a second bearing matched with the second shaft hole.
optionally, the second shaft hole is provided in the fixed base, and the second bearing is provided in the outer ring member.
Optionally, the laser vertical calibration device further comprises a connecting chassis, the connecting chassis is coaxial with the inner ring part and is fixedly connected below the inner ring part;
The inner ring part is fixedly connected with the laser through the connecting chassis.
Optionally, the laser vertical calibration device further includes a plurality of connecting columns, and each connecting column is located between the inner ring component and the connecting chassis and realizes fixed connection therebetween.
Optionally, the outer ring part and the inner ring part are further connected by an electrically conductive slip ring.
in addition, in order to solve the above technical problem, the present application further provides a laser radar, including a fixed base and a laser; the laser radar also comprises the laser vertical calibration device of any one of the above parts;
the outer ring component is rotationally connected with the fixed base in the Y-axis direction;
The inner ring component is fixedly connected with the laser below the inner ring component, and the axis of a laser emitting opening of the laser coincides with the axis of the inner ring component.
Optionally, the laser includes a telescope disposed at the laser emitting port, and an axis of the telescope coincides with an axis of the inner ring member.
In the present application, the laser vertical alignment device includes a gimbal; the universal moving part comprises an outer ring part and an inner ring part, and the inner ring part is connected with the outer ring part in a rotating mode in the X-axis direction; the outer ring component is rotationally connected with the fixed base in the Y-axis direction; the inner ring component is fixedly connected with the laser below the inner ring component, and the axis of a laser emitting opening of the laser coincides with the axis of the inner ring component.
In the structural design, through the universal movable link between the inner ring part and the outer ring part, when the laser meets uneven ground, the inner ring part can rotate around an X axis relative to the outer ring part, and the outer ring part can rotate around a Y axis relative to the fixed base, so that the laser can be automatically leveled and vertically upwards under the action of gravity. Therefore, the laser wind measuring radar leveling device has the advantages of simple structure, high accuracy, low cost, good stability and the like, and can solve the problems that the laser wind measuring radar needs to be subjected to complex leveling work before being used, the manual adjustment can bring inaccurate accuracy and the like. In addition, this application still provides a laser radar.
Drawings
FIG. 1 is a schematic diagram of a laser vertical alignment apparatus shown in an exemplary embodiment of the present application;
FIG. 2 is a schematic diagram of a lidar shown in an exemplary embodiment of the present application;
Fig. 3 is a schematic structural diagram of the lidar shown in fig. 2 from another view angle.
Wherein, the corresponding relationship between the part names and the reference numbers in fig. 1 to 3 is:
A laser 1;
An outer ring member 2; a first shaft hole 201; a second bearing; 202;
An inner ring member 3; a first bearing 301;
A connecting chassis 4;
A column 5;
a telescope 6.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
As shown in fig. 1, 2 and 3, fig. 1 is a schematic structural diagram of a laser vertical alignment apparatus shown in an exemplary embodiment of the present application; FIG. 2 is a schematic diagram of a lidar shown in an exemplary embodiment of the present application; fig. 3 is a schematic diagram of the lidar shown in fig. 2 from another view angle.
In an embodiment of the present application, the laser vertical calibration apparatus provided in the present application is used for vertical calibration of laser of a laser radar; the laser radar comprises a fixed base and a laser 1; the laser vertical calibration device comprises a universal moving part; the universal moving part comprises an outer ring part 2 and an inner ring part 3, and the inner ring part 3 is rotatably connected with the outer ring part 2 in the X-axis direction; the outer ring component 2 is rotationally connected with the fixed base in the Y-axis direction; the inner ring member 3 is fixedly connected to the laser 1 at a lower portion thereof, and an axis of a laser emitting port of the laser 1 coincides with an axis of the inner ring member 3.
It should be noted that, in the present invention, the X-axis and the Y-axis are selected in a conventional manner, and in a horizontal plane, extending in the left-right direction is the X-axis direction, and on this basis, perpendicular to the X-axis direction is the Y-axis direction.
in the structural design, through the universal movable link between the inner ring part 3 and the outer ring part 2, when the ground is uneven, the inner ring part 3 can rotate around an X axis relative to the outer ring part 2, and the outer ring part 2 can rotate around a Y axis relative to a fixed base, so that the laser 1 can be automatically leveled and vertically upwards under the action of gravity. Therefore, the laser wind measuring radar leveling device has the advantages of simple structure, high accuracy, low cost, good stability and the like, and can solve the problems that the laser wind measuring radar needs to be subjected to complex leveling work before being used, the manual adjustment can bring inaccurate accuracy and the like. In addition, this application still provides a laser radar.
In the above-described embodiment, further design can be made as to how the rotational connection is achieved between the inner ring member 3 and the outer ring member 2, and between the outer ring member 2 and the fixed base.
For example, one of the outer ring member 2 and the inner ring member 3 is provided with a first shaft hole 201, and the other is provided with a first bearing 301 fitted to the first shaft hole 201. One of the fixed base and the outer ring member 2 is provided with a second shaft hole, and the other is provided with a second bearing 202 fitted to the second shaft hole. The present application does not limit which one of the two shaft holes and the other one of the two shaft holes is provided with the bearing, so that the two shaft holes and the bearing are within the protection scope of the present application.
Of course, as an alternative, as shown in fig. 1, the first shaft hole 201 is opened in the outer ring member 2, and the first bearing 301 is opened in the inner ring member 3. The second shaft hole is provided in the fixed base, and the second bearing 202 is provided in the outer ring member 2.
In the above described embodiments we can also make specific designs for the fixed connection between the inner ring part 3 and the laser 1. For example, as shown in fig. 2 and 3, the laser vertical alignment device further comprises a connecting base plate 4, wherein the connecting base plate 4 is coaxial with the inner ring part 3 and is fixedly connected below the inner ring part 3; the inner ring part 3 is fixedly connected to the laser 1 by means of a connection base plate 4.
further, as shown in fig. 2 and 3, the laser vertical alignment device further includes a plurality of connecting columns 5, and each connecting column 5 is located between the inner ring member 3 and the connecting chassis 4 and realizes a fixed connection therebetween. The number of the upright posts 5 is at least three, and the upright posts are uniformly distributed along the circumferential direction of the connecting chassis 4 and the inner ring part 3. The structural design can realize the fixed connection between the connecting chassis 4 and the laser 1 very conveniently and efficiently, and the linkage is very good during automatic leveling.
further, as shown in fig. 1, the outer ring member 2 and the inner ring member 3 are further connected by an electrically conductive slip ring.
It should be noted that the conductive slip ring belongs to the application range of electrical contact sliding connection, and is also called slip ring, or called rotary joint, rotary electrical interface, slip ring, coil, commutator, and adaptor, and is a precision power transmission device for realizing image, data signal and power transmission of two relative rotating mechanisms. It is particularly suitable for use in locations where unlimited continuous rotation is required, while power or data is transmitted from a fixed position to a rotating position.
in this application, it is a problem how to derive the data in the laser 1. This can be achieved very easily by means of the conductive slip ring. Specifically, in the present application, the first bearing 301 and the second bearing 202 may be conductive slip ring components at the same time, so as to realize data and current transmission.
In this application, because the weight that adopts laser instrument 1 self replaces gravity pendulum top, the benefit has reduced complete machine weight, the volume has been reduced, the shortcoming is that laser instrument 1 needs the power supply, need data transmission, cause the cable fracture easily in the structure of activity, consequently, adopt the structural design of electrically conductive sliding ring in this scheme, as figure 1, laser instrument 1 data line is from connecting chassis 4 to interior ring part 3, an electrically conductive sliding ring that utilizes first bearing 301 to form is derived from interior ring part 3 to outer loop part 2, a electrically conductive sliding ring that recycles second bearing 202 formation is derived to the outside from outer loop part 2, lossless data transmission and noninterference motion have been realized.
In addition, the present application also provides a lidar, as shown in fig. 2 and 3, comprising a fixed base and a laser 1; the laser radar further comprises the laser vertical calibration device of any one of the above; the outer ring component 2 is rotationally connected with the fixed base in the Y-axis direction; the inner ring member 3 is fixedly connected to the laser 1 at a lower portion thereof, and an axis of a laser emitting port of the laser 1 coincides with an axis of the inner ring member 3.
Further, the laser 1 comprises a telescope 6 arranged at the laser emitting port, and the axis of the telescope 6 is coincident with the axis of the inner ring part 3.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (10)
1. A laser vertical calibration device is used for vertical calibration of laser of a laser radar; the laser radar comprises a fixed base and a laser; the laser vertical calibration device is characterized by comprising a universal motion part;
The universal moving part comprises an outer ring part and an inner ring part, and the inner ring part is connected with the outer ring part in a rotating mode in the X-axis direction; the outer ring component is rotationally connected with the fixed base in the Y-axis direction;
the inner ring component is fixedly connected with the laser below the inner ring component, and the axis of a laser emitting opening of the laser coincides with the axis of the inner ring component.
2. The laser vertical alignment device of claim 1, wherein one of the outer ring member and the inner ring member is provided with a first shaft hole, and the other is provided with a first bearing engaged with the first shaft hole.
3. The laser vertical alignment device of claim 2, wherein the first axial bore is formed in the outer ring member and the first bearing is formed in the inner ring member.
4. The laser vertical alignment device of claim 1, wherein one of the fixed base and the outer ring member is provided with a second shaft hole, and the other is provided with a second bearing engaged with the second shaft hole.
5. the laser vertical alignment device of claim 4, wherein the second shaft hole opens on the fixed base and the second bearing opens on the outer ring member.
6. the laser vertical alignment device of any one of claims 1 to 5, further comprising a connection chassis coaxial with the inner ring member and fixedly connected below the inner ring member;
The inner ring part is fixedly connected with the laser through the connecting chassis.
7. The laser vertical alignment device of claim 6, further comprising a plurality of connecting posts, each connecting post positioned between and fixedly connecting the inner ring member and the connecting chassis.
8. the laser vertical alignment device of any of claims 1-5, wherein the outer ring part and the inner ring part are further connected by a conductive slip ring.
9. a laser radar comprises a fixed base and a laser; characterized in that the lidar further comprises a laser vertical alignment device according to any of claims 1-8;
The outer ring component is rotationally connected with the fixed base in the Y-axis direction;
the inner ring component is fixedly connected with the laser below the inner ring component, and the axis of a laser emitting opening of the laser coincides with the axis of the inner ring component.
10. The lidar of claim 9, wherein the laser comprises a telescope disposed at the laser emitting port, an axis of the telescope being coincident with an axis of the inner ring member.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921925536.9U CN209784528U (en) | 2019-11-11 | 2019-11-11 | laser radar and laser vertical calibration device thereof |
| DE202020102241.5U DE202020102241U1 (en) | 2019-11-11 | 2020-04-22 | Lidar and laser vertical calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921925536.9U CN209784528U (en) | 2019-11-11 | 2019-11-11 | laser radar and laser vertical calibration device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209784528U true CN209784528U (en) | 2019-12-13 |
Family
ID=68789718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921925536.9U Active CN209784528U (en) | 2019-11-11 | 2019-11-11 | laser radar and laser vertical calibration device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209784528U (en) |
| DE (1) | DE202020102241U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740031A (en) * | 2021-08-31 | 2021-12-03 | 北京吉天仪器有限公司 | Light source adjusting device and method |
| CN115421162A (en) * | 2022-09-30 | 2022-12-02 | 上海能源科技发展有限公司 | Floating type continuous wave laser wind finding radar device and system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018549B (en) * | 2021-09-30 | 2024-06-21 | 昂纳科技(深圳)集团股份有限公司 | Polarization-dependent loss auxiliary measurement device and measurement system |
-
2019
- 2019-11-11 CN CN201921925536.9U patent/CN209784528U/en active Active
-
2020
- 2020-04-22 DE DE202020102241.5U patent/DE202020102241U1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740031A (en) * | 2021-08-31 | 2021-12-03 | 北京吉天仪器有限公司 | Light source adjusting device and method |
| CN115421162A (en) * | 2022-09-30 | 2022-12-02 | 上海能源科技发展有限公司 | Floating type continuous wave laser wind finding radar device and system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202020102241U1 (en) | 2020-05-04 |
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