Laser radar calibration device

Abstract

The utility model relates to the technical field of equipment calibration, and discloses a laser radar calibration device which comprises a machine body and a corner reflector. The machine body comprises a main body and a first adsorption part which are mutually connected; the corner reflector comprises a body and a second adsorption part which are connected with each other, and the first adsorption part and the second adsorption part can be adsorbed with each other; one of the machine body and the corner reflector comprises a positioning bulge, and the other one is provided with a positioning hole; and when the first adsorption piece and the second adsorption piece are mutually adsorbed, the positioning holes are inserted into the corresponding positioning holes. Through the arrangement, the technical problem that the corner reflector is difficult to disassemble relative to the main body in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of equipment calibration technology, and in particular to a lidar calibration device. Background Technology

[0002] Currently, in the field of Advanced Driver Assistance Systems (ADAS), Adaptive Cruise Control (ACC) is a widely used assistance function. Its working principle is to use onboard radar to measure the distance to the vehicle ahead in real time, compare the vehicle's speed with the speed of the vehicle ahead, and simultaneously control the vehicle's throttle, brakes, and other power systems to maintain a constant safe distance from the vehicle ahead.

[0003] The calibration of vehicle radar is mostly retrofit calibration, which means that after the vehicle has been delivered to the user for a period of time, due to objective reasons, it is necessary to calibrate the vehicle radar using a lidar calibration device.

[0004] In related technologies, a lidar calibration device generally includes a body and a corner reflector. The corner reflector is installed on the body, which can be used to emit laser signals. After the laser signals come into contact with the vehicle-mounted radar to be calibrated, they form reflected waves. The corner reflector is used to receive the reflected waves so that the lidar calibration device can locate the vehicle-mounted radar to be calibrated.

[0005] However, the high assembly precision between the corner reflector and the main body results in a relatively strong connection between them. This means that when the maximum test distance of the lidar calibration device needs to be changed, a corner reflector of a different size must be replaced, and the corner reflector is difficult to disassemble relative to the main body. Utility Model Content

[0006] This utility model aims to provide a lidar calibration device to solve the technical problem that corner reflectors are difficult to disassemble relative to the main body in the prior art.

[0007] The technical problem solved by this utility model embodiment is addressed by the following technical solution:

[0008] A lidar calibration device is provided, comprising:

[0009] The fuselage includes an interconnected main body and a first adsorption element;

[0010] A corner reflector, comprising a body and a second adsorption element connected to each other, wherein the first adsorption element and the second adsorption element are capable of adsorbing each other.

[0011] One of the body and the corner reflector includes a positioning protrusion, and the other has a positioning hole; when the first adsorption member and the second adsorption member adsorb each other, the positioning hole is inserted into the corresponding positioning hole.

[0012] In some embodiments, both the first and second adsorption components are magnetic components, the body is made of aluminum, the body includes a positioning protrusion, the second adsorption component has a positioning hole, and the positioning protrusion and the first adsorption component are located on the same side of the body.

[0013] In some embodiments, the number of positioning protrusions is at least two, and the number of positioning holes is the same as the number of positioning protrusions.

[0014] In some embodiments, all the positioning protrusions are arranged sequentially in a horizontal direction, and the first adsorption member includes two groups, one group of the first adsorption member located on the upper side of the positioning protrusion, and the other group of the first adsorption member located on the lower side of the positioning protrusion.

[0015] In some embodiments, there are two positioning protrusions, one of which is circular and the other is waist-shaped. The major axis of the waist-shaped positioning hole is parallel to the horizontal plane. The shape of the positioning protrusion matches the shape of the circular positioning hole, and the size of the minor axis of the waist-shaped positioning hole matches the size of the positioning protrusion. When the first adsorption member and the second adsorption member adsorb each other, the positioning protrusion is located in the middle of the waist-shaped positioning hole, and the upper and lower walls of the waist-shaped positioning hole clamp the corresponding positioning protrusion.

[0016] In some embodiments, the main body includes a laser emitter located within the main body. The main body has a first laser emission hole, and the corner reflector has a second laser emission hole. The second laser emission hole passes through the main body and the second adsorption member in sequence. When the positioning hole is inserted into the corresponding positioning hole, the first laser emission hole and the second laser emission hole are aligned, and the laser emitted by the laser emitter can pass through the first laser emission hole and the second laser emission hole in sequence.

[0017] In some embodiments, the body is a hollow triangular pyramid, one corner of the body is connected to the second adsorption member, the opening of the body faces away from the second adsorption member, and the central axis of the second laser emission hole is collinear with the central axis of the body.

[0018] In some embodiments, the corner reflector further includes a mounting bracket, the mounting bracket including a first support surface and a second support surface, the first support surface being connected to the body, the second support surface being connected to the second adsorption member, and the first support surface being spaced apart from the body.

[0019] In some embodiments, the mounting bracket has a hollow structure, and the first support surface is parallel to the second support surface.

[0020] In some embodiments, the mounting bracket has a hollow structure, and the first support surface and the second support surface form a preset angle.

[0021] Compared with existing technologies, when it is necessary to change the maximum test distance of the lidar calibration device, the size of the corner reflector needs to be changed. However, by simply pulling the corner reflector to move it away from the body, the first and second adsorption components separate, and the positioning protrusions extend out of the corresponding positioning holes, thus allowing the body and the corner reflector to be detached from each other.

[0022] Subsequently, another corner reflector with dimensions corresponding to the maximum test distance of the lidar calibration device is brought close to the main body, and the positioning protrusion is aligned with the corresponding positioning hole. The first and second suction components are then brought close together and attracted to each other, so that the new corner reflector is connected to the main body, thus completing the replacement of the corner reflector. In this embodiment, when the maximum test distance of the lidar calibration device needs to be changed, the corner reflector is easily detached and installed relative to the main body, accelerating the replacement speed of the corner reflector relative to the main body. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0024] Figure 1 This is a perspective view of a lidar calibration device according to one embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A 3D view of the mid-fuselage and corner reflectors being disassembled and reassembled;

[0026] Figure 3 This is a perspective view of the corner reflector in another embodiment of the present invention;

[0027] Figure 4 This is a perspective view of the corner reflector in another embodiment of this utility model.

[0028] Figure label:

[0029] 100. LiDAR calibration device; 10. Body; 12. Main body; 122. Positioning protrusion; 1202. First laser emission hole; 14. First suction element; 20. Corner reflector; 22. Main body; 24. Second suction element; 2402. Positioning hole; 26. Mounting bracket; 262. First support surface; 264. Second support surface; 266. Fixing plate; 202. Second laser emission hole. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements can exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0032] The lidar calibration device 100 provided in this application will be described in detail below with reference to all the accompanying drawings and specific embodiments.

[0033] Please refer to Figure 1 and Figure 2 One embodiment of this utility model discloses a lidar calibration device 100, including a body 10 and a corner reflector 20; the body 10 includes a main body 12 and a first adsorption member 14 connected to each other; the corner reflector 20 includes a main body 22 and a second adsorption member 24 connected to each other, and the first adsorption member 14 and the second adsorption member 24 can adsorb each other; one of the body 10 and the corner reflector 20 includes a positioning protrusion 122, and the other has a positioning hole 2402; when the first adsorption member 14 and the second adsorption member 24 adsorb each other, the positioning hole 2402 is inserted into the corresponding positioning hole 2402.

[0034] With the above structure, when it is necessary to change the maximum test distance of the lidar calibration device 100, the size of the corner reflector 20 needs to be changed. The corner reflector 20 only needs to be pulled to move it away from the body 10. The first suction member 14 and the second suction member 24 separate from each other, and the positioning protrusion 122 extends out of the corresponding positioning hole 2402, so that the body 10 and the corner reflector 20 can be disassembled.

[0035] Subsequently, another corner reflector 20, whose size corresponds to the maximum test distance of the lidar calibration device 100, is brought close to the body 10, and the positioning protrusion 122 is aligned with the corresponding positioning hole 2402. The first suction member 14 and the second suction member 24 are brought close to each other and attracted to each other, so that the new corner reflector 20 is connected to the body 10, thus completing the replacement of the corner reflector 20. In this embodiment, when the maximum test distance of the lidar calibration device 100 needs to be changed, the corner reflector 20 is easily installed and removed from the body 10, which speeds up the replacement speed of the corner reflector 20 relative to the body 10.

[0036] Specifically, in this embodiment, the main body 12 can be in the shape of a cuboid, the first adsorption member 14 can be a circular magnet, and the number of the first adsorption members 14 can be multiple. The body 10 includes a positioning protrusion 122, which can be a cylinder. The positioning protrusion 122 and the first adsorption member 14 are both located on the same side of the body 10.

[0037] The second adsorption element 24 is a circular iron sheet. The positioning hole 2402 is opened in the second adsorption element 24. The positioning hole 2402 is a through hole. The number of positioning protrusions 122 and positioning holes 2402 can be multiple. The positioning hole 2402 can include circular holes and waist-shaped holes. The body 22 has a hollow triangular pyramid structure. The opening of the triangular pyramid is located on the side away from the body 10. The body 22 can be connected to the second adsorption element 24 by welding.

[0038] In other embodiments, the main body 12 may be other structures, such as a cylinder; the first adsorption member 14 may be other structures, such as an iron sheet; correspondingly, the second adsorption member 24 is a magnet; the number of the first adsorption member 14 and the second adsorption member 24 may both be one; the positioning protrusion 122 may also be other structures, such as a cuboid; the number of the positioning hole 2402 and the positioning protrusion 122 may both be one.

[0039] In some embodiments, the first adsorption member 14 and the second adsorption member 24 are both magnetic adsorption members, the corner reflector 20 is made of aluminum material, the body 10 includes a positioning protrusion 122, the second adsorption member 24 has a positioning hole 2402, and the positioning protrusion 122 and the first adsorption member 14 are located on the same side of the body 12.

[0040] With the above structure, both the first adsorption member 14 and the second adsorption member 24 are magnetic, so that they can attract each other when they are close to each other. In addition, the body 22 is made of aluminum, which makes the body 22 lighter. When the hole wall of the positioning hole 2402 abuts against the positioning protrusion 122, it can more stably support the body 22, and the user can pick up the corner reflector 20 more easily. At the same time, the magnetic members will not attract the aluminum body 22, so that the positioning protrusion 122 can be aligned with the corresponding positioning hole 2402 during the installation of the corner reflector 20 and the body 10.

[0041] Specifically, the magnetic attractor can be a magnet or an alloy of iron, cobalt, nickel, or any of these three that can be attracted by a magnet. In this embodiment, the first attractor 14 is a magnet, and the second attractor 24 is an iron sheet. In other embodiments, both the first attractor 14 and the second attractor 24 are magnets; or the first attractor 14 is an iron sheet, and the second attractor 24 is a magnet.

[0042] In some embodiments, the number of positioning protrusions 122 is at least two, and the number of positioning holes 2402 is the same as the number of positioning protrusions 122.

[0043] With the above structure, when the corner reflector 20 is connected to the body 10, the positioning protrusion 122 is located in the corresponding positioning hole 2402, and the hole wall of the positioning hole 2402 abuts against the positioning protrusion 122, so that when the first adsorption member 14 and the second adsorption member 24 are in close contact with each other, the corner reflector 20 can be fixed to the body 10; the number of positioning protrusions 122 is at least two, so that the corner reflector 20 can be fixed to the body 10 more stably; in addition, the corner reflector 20 is difficult to rotate relative to the body 10.

[0044] Specifically, in this embodiment, there are two positioning protrusions 122, and the arrangement direction of the two positioning protrusions 122 is parallel to the horizontal plane. The positioning protrusions 122 are cylinders. There are two positioning holes 2402, one of which is a round hole and the other is an oblong hole.

[0045] In other embodiments, the number of positioning holes 2402 may be multiple, such as three, and the three positioning holes 2402 are respectively distributed at the three vertices of the triangle, or the three positioning holes 2402 are arranged sequentially along a straight line; the shape of the positioning holes 2402 may also be all circular holes.

[0046] In some embodiments, all positioning protrusions 122 are arranged sequentially in the horizontal direction, and the first adsorption member 14 includes two sets, one set of first adsorption members 14 is located on the upper side of the positioning protrusion 122, and the other set of first adsorption members 14 is located on the lower side of the positioning protrusion 122.

[0047] With the above structure, all the positioning protrusions 122 are arranged in sequence along the horizontal direction, so that the hole wall of each positioning hole 2402 can abut against the corresponding positioning protrusion 122, and the corner reflector 20 can be supported by each positioning protrusion 122 more evenly.

[0048] In addition, one set of first adsorption members 14 is located on the upper side of the positioning protrusion 122, and another set of first adsorption members 14 is located on the lower side of the positioning protrusion 122; both sets of first adsorption members 14 can adsorb and press against the second adsorption member 24, so that the second adsorption member 24 can be stably pressed against one side of the body 10, and the central axis of the positioning hole 2402 can be collinear with the central axis of the corresponding positioning protrusion 122 to avoid the corner reflector 20 tilting relative to the body 10.

[0049] Specifically, in this embodiment, there are two first adsorption elements 14 in each group, and the two first adsorption elements 14 in each group are arranged in sequence along the horizontal direction. The distance between the two first adsorption elements 14 in each group is less than the distance between the two positioning protrusions 122. One positioning protrusion 122 is located on one side of all the first adsorption elements 14, and the other positioning protrusion 122 is located on the other opposite side of all the first adsorption elements 14.

[0050] In other embodiments, the number of first adsorbents 14 in each group can be other, such as one or three; all the first adsorbents 14 in each group can also be arranged in other ways, such as three first adsorbents 14 in each group, and the three first adsorbents 14 are arranged at the three vertices of the triangle.

[0051] In some embodiments, there are two positioning protrusions 122, one of which is a circular positioning hole 2402 and the other is an oblong positioning hole 2402. The major axis of the oblong positioning hole 2402 is parallel to the horizontal plane. The shape of the positioning protrusion 122 is adapted to the shape of the circular positioning hole 2402, and the size of the minor axis of the oblong positioning hole 2402 is adapted to the size of the positioning protrusion 122. When the first adsorption member 14 and the second adsorption member 24 are adsorbed together, the positioning protrusion 122 is located in the middle of the oblong positioning hole 2402, and the upper and lower walls of the oblong positioning hole 2402 clamp the corresponding positioning protrusion 122.

[0052] With the above structure, one of the positioning holes 2402 is circular and the other is oblong. During the installation of the body 10 and the corner reflector 20, one of the positioning protrusions 122 is aligned with the circular positioning hole 2402. The angle between the corner reflector 20 and the body 10 is adjusted so that the other positioning protrusion 122 is located at the oblong positioning hole 2402. The length of the major axis of the oblong positioning hole 2402 is greater than the diameter of the positioning protrusion 122. The positioning protrusion 122 is located in the middle of the oblong positioning hole 2402 so that the two positioning protrusions 122 can be inserted into the corresponding positioning holes 2402 at the same time.

[0053] In addition, the long axis of the waist-shaped positioning hole 2402 is parallel to the horizontal plane. When the positioning protrusion 122 is inserted into the waist-shaped positioning hole 2402, the lower side wall of the waist-shaped positioning hole 2402 can abut against and support the positioning protrusion 122, so that the body 10 and the corner reflector 20 can be stably connected.

[0054] Specifically, the positioning protrusion 122 has a cylindrical structure, the diameter of the circular positioning hole 2402 is equal to the diameter of the positioning protrusion 122, and the length of the short axis of the waist-shaped positioning hole 2402 is equal to the diameter of the positioning protrusion 122, so that the upper and lower walls of the waist-shaped positioning hole 2402 clamp the corresponding positioning protrusion 122.

[0055] In some embodiments, the main body 12 includes a laser emitter located inside the main body 12. The main body 12 has a first laser emission hole 1202, and the corner reflector 20 has a second laser emission hole 202. The second laser emission hole 202 passes through the main body 22 and the second adsorption member 24 in sequence. When the positioning hole 2402 is inserted into the corresponding positioning hole 2402, the first laser emission hole 1202 and the second laser emission hole 202 are aligned, and the laser emitted by the laser emitter can pass through the first laser emission hole 1202 and the second laser emission hole 202 in sequence.

[0056] With the above structure, the laser emitter can emit laser light directly. The laser light can be transmitted to the device under test through the first laser emission hole 1202 and the second laser emission hole 202. After the laser light hits the device under test, it is reflected. The reflected wave formed by the laser reflection can be transmitted to the corner reflector 20. After receiving the reflected wave, the corner reflector 20 can transmit the signal to the main body 12, so that the computer in the main body 12 can obtain the position information of the device under test, and the laser radar calibration device 100 can calibrate the device under test.

[0057] Specifically, in this embodiment, both the first laser emitting hole 1202 and the second laser emitting hole 202 are circular through holes, and the diameter of the first laser emitting hole 1202 is equal to the diameter of the second laser emitting hole 202; the first laser emitting hole 1202 is located between the two positioning protrusions 122, and the second laser emitting hole 202 is located at the top corner of the body 22 facing the fuselage 10.

[0058] In other embodiments, the first laser emitting aperture 1202 and the second laser emitting aperture 202 may also be other shapes, such as elliptical; the aperture of the first laser emitting aperture 1202 may also be larger than the aperture of the second laser emitting aperture 202.

[0059] In some embodiments, the body 22 is a hollow triangular pyramid shape, one corner of the body 22 is connected to the second adsorption member 24, the opening of the body 22 faces away from the second adsorption member 24, and the central axis of the second laser emission hole 202 is collinear with the central axis of the body 22.

[0060] With the above structure, the central axis of the second laser emission aperture 202 is collinear with the central axis of the body 22, so that after the reflected wave formed by the laser reflection is transmitted to the corner reflector 20, the opening of the body 22 can uniformly receive the reflected wave, so that the lidar calibration device 100 can more accurately detect the position of the device under test.

[0061] Specifically, the second adsorption element 24 is a circular sheet structure; the body 22 is formed by three equilateral triangular sheet structures surrounding each other. The body 22 is a hollow triangular pyramid structure. The opening of the triangular pyramid is located on the side away from the fuselage 10. The apex of the body 22 facing the fuselage 10 can be connected to the second adsorption element 24 by welding. One central axis of the body 22 is parallel to the horizontal plane.

[0062] In some embodiments, the corner reflector 20 further includes a mounting bracket 26, which includes a first support surface 262 and a second support surface 264. The first support surface 262 is connected to the body 22, and the second support surface 264 is connected to the second adsorption member 24. There is a gap between the first support surface 262 and the body 12.

[0063] With the above structure, the body 22 of different models of corner reflectors 20 has different dimensions, and the mounting bracket 26 has a certain width so that the overall width of the corner reflector 20 remains consistent. Thus, when different models of corner reflectors 20 are installed on the fuselage 10, the overall size of the lidar calibration device 100 remains consistent.

[0064] Specifically, in this embodiment, the mounting bracket 26 includes two parallel fixing pieces 266, which are located between the first support surface 262 and the second support surface 264, so that there is a gap between the first support surface 262 and the main body 12.

[0065] In other embodiments, the mounting bracket 26 may also have other structures, such as the mounting bracket 26 including multiple support bars disposed between the first support surface 262 and the second support surface 264.

[0066] Please refer to Figure 3 In some embodiments, the mounting bracket 26 has a hollow structure, and the first support surface 262 is parallel to the second support surface 264.

[0067] With the above structure, when the mounting bracket 26 is hollow, the overall weight of the mounting bracket 26 is lighter, and consequently the weight of the corner reflector 20 is also lighter, which facilitates the positioning of the protrusion 122 to support the corner reflector 20. In addition, the first support surface 262 is parallel to the second support surface 264, and the laser emitted from the laser emitter inside the main body 12 can pass through the second support surface 264 and the first support surface 262 in sequence.

[0068] Specifically, the mounting bracket 26 has a hollow cuboid structure. The two opposite sides of the mounting bracket 26 are the first support surface 262 and the second support surface 264, respectively. The other two opposite sides of the mounting bracket 26 are the fixing pieces 266.

[0069] Please refer to Figure 4 In some embodiments, the mounting bracket 26 has a hollow structure, and the first support surface 262 and the second support surface 264 form a preset angle.

[0070] With the above structure, the laser emitted by the laser emitter can be emitted through one surface of the main body 12, and the positioning protrusion 122 protrudes from the other surface of the main body 12. The two surfaces of the main body 12 can have a certain angle. In order to make the laser emitted by the laser emitter pass through the first support surface 262 and the main body 22, the first support surface 262 and the second support surface 264 are set with a preset angle.

[0071] Specifically, in this embodiment, the angle between the first support surface 262 and the second support surface 264 is 90°, and the fixing piece 266 is a right-angled triangle in the shape of a sheet. In other embodiments, the first support surface 262 and the second support surface 264 may also form other angles, such as 60°.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lidar calibration device, characterized in that, include: The fuselage includes an interconnected main body and a first adsorption element; A corner reflector, comprising a body and a second adsorption element connected to each other, wherein the first adsorption element and the second adsorption element are capable of adsorbing each other. One of the body and the corner reflector includes a positioning protrusion, and the other has a positioning hole; when the first adsorption member and the second adsorption member adsorb each other, the positioning hole is inserted into the corresponding positioning hole.

2. The lidar calibration device according to claim 1, characterized in that, Both the first and second adsorption components are magnetic. The body is made of aluminum. The body includes a positioning protrusion. The second adsorption component has a positioning hole. The positioning protrusion and the first adsorption component are located on the same side of the body.

3. The lidar calibration device according to claim 2, characterized in that, The number of positioning protrusions is at least two, and the number of positioning holes is the same as the number of positioning protrusions.

4. The lidar calibration device according to claim 3, characterized in that, All the positioning protrusions are arranged sequentially in the horizontal direction. The first adsorption element includes two sets: one set of the first adsorption element is located on the upper side of the positioning protrusion, and the other set of the first adsorption element is located on the lower side of the positioning protrusion.

5. The lidar calibration device according to claim 4, characterized in that, There are two positioning protrusions, one of which is circular and the other is waist-shaped. The major axis of the waist-shaped positioning hole is parallel to the horizontal plane. The shape of the positioning protrusion matches the shape of the circular positioning hole, and the size of the minor axis of the waist-shaped positioning hole matches the size of the positioning protrusion. When the first adsorption member and the second adsorption member are adsorbed together, the positioning protrusion is located in the middle of the waist-shaped positioning hole, and the upper and lower walls of the waist-shaped positioning hole clamp the corresponding positioning protrusion.

6. The lidar calibration device according to claim 1, characterized in that, The main body includes a laser emitter located inside the main body. The main body has a first laser emission hole, and the corner reflector has a second laser emission hole. The second laser emission hole passes through the main body and the second adsorption member in sequence. When the positioning hole is inserted into the corresponding positioning hole, the first laser emission hole and the second laser emission hole are aligned, and the laser emitted by the laser emitter can pass through the first laser emission hole and the second laser emission hole in sequence.

7. The lidar calibration device according to claim 6, characterized in that, The main body is a hollow triangular pyramid shape, one corner of the main body is connected to the second adsorption element, the opening of the main body faces away from the second adsorption element, and the central axis of the second laser emission hole is collinear with the central axis of the main body.

8. The lidar calibration device according to claim 1, characterized in that, The corner reflector also includes a mounting bracket, which includes a first support surface and a second support surface. The first support surface is connected to the body, and the second support surface is connected to the second adsorption member. There is a gap between the first support surface and the body.

9. The lidar calibration device according to claim 8, characterized in that, The mounting bracket has a hollow structure, and the first support surface is parallel to the second support surface.

10. The lidar calibration device according to claim 8, characterized in that, The mounting bracket has a hollow structure, and the first support surface and the second support surface form a preset angle.

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