Laser radar testing device
By designing a track and fixture mechanism combined with a chart-moving mechanism, the multi-scenario adaptability of the LiDAR testing device was achieved, solving the problem that existing technologies cannot fully verify LiDAR performance and achieving more comprehensive testing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-31
AI Technical Summary
Existing lidar testing systems use fixed reflectance charts, which cannot fully verify the core performance indicators of lidar, such as ranging accuracy, point cloud density, and anti-interference capability.
A lidar testing device was designed, comprising a track, a clamping mechanism, and a card moving mechanism. By combining a sliding mechanism, a rotating device, and a card frame, the movement and rotation of the card are realized, simulating dynamic and complex scenarios for testing.
The adaptability of the lidar testing device has been improved, enabling it to more comprehensively simulate various testing scenarios and meet the testing needs of lidar.
Smart Images
Figure CN224066994U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lidar technology, and in particular to a lidar testing device. Background Technology
[0002] Currently, the development of lidar requires comprehensive verification of its core performance indicators, such as ranging accuracy, point cloud density, and anti-interference capability, through a professional testing system. At present, lidar testing systems generally use fixed reflectivity charts as standard test targets. However, this type of system has significant technical limitations and cannot meet testing requirements. Utility Model Content
[0003] The purpose of this invention is to provide a lidar testing device that can increase the number of testing scenarios and improve the adaptability of the lidar testing device to meet testing requirements.
[0004] To achieve the above objectives, this utility model provides a lidar testing device, comprising:
[0005] track;
[0006] A clamping mechanism, located at one end of the track, is used to mount a lidar.
[0007] The drawing card moving mechanism includes a sliding mechanism, a first rotating device, and a drawing card frame. The sliding mechanism is slidably connected to the track, and the drawing card frame and the sliding mechanism are rotatably connected through the first rotating device, so that the drawing card frame can rotate around the Z-axis. The drawing card frame is used to mount the drawing card.
[0008] In some embodiments:
[0009] The card moving mechanism also includes a support plate;
[0010] The sliding mechanism includes a slider and a first driving device. The slider is mounted on the bottom of the support plate and is slidably connected to the track. The first driving device is mounted on the support plate and drives the slider to move on the track. The first rotating device is connected to the slider through the support plate.
[0011] In some embodiments:
[0012] The first rotating device includes a turntable rotatably connected to the support plate, and the turntable is also connected to the drawing frame.
[0013] In some embodiments:
[0014] The clamping mechanism includes a support base, a clamp, and a second rotating device. The support base is disposed at one end of the track, the second rotating device is disposed on the support base, and the clamp is disposed on the second rotating device. The second rotating device can drive the clamp to rotate along the Z-axis.
[0015] In some embodiments:
[0016] The clamping mechanism further includes a third rotating device, and the clamp is connected to the second rotating device through the third rotating device. The third rotating device can drive the clamp to rotate along the Y-axis.
[0017] In some embodiments:
[0018] The clamping mechanism further includes an alignment auxiliary tool, which is detachably mounted on the second rotating device and is used to assist in the installation of the lidar.
[0019] In some embodiments:
[0020] The clamping mechanism further includes a fourth rotating device, and the clamp is connected to the third rotating device through the fourth rotating device. The fourth rotating device can drive the clamp to rotate along the X-axis.
[0021] In some embodiments:
[0022] The clamping mechanism further includes a fine-tuning device, through which the clamp is connected to the fourth rotating device. The fine-tuning device can drive the clamp to move along the X-axis, the Y-axis, and the Z-axis.
[0023] In some embodiments:
[0024] The clamping mechanism further includes a lifting device, and the second rotating device is connected to the support base through the lifting device. The lifting device can drive the second rotating device to move along the Z-axis.
[0025] In some embodiments:
[0026] The clamping mechanism also includes a fan, which is mounted on the second rotating device and is used to dissipate heat from the lidar.
[0027] This utility model provides a lidar testing device, which has the following advantages compared with the prior art:
[0028] The laser radar testing device of this utility model includes a track, a clamping mechanism, and a pattern card moving mechanism. The pattern card moving mechanism includes a sliding mechanism, a first rotating device, and a pattern card frame. The pattern card moving mechanism slides on the track through the sliding mechanism to change the distance between the pattern card installed on the pattern card frame and the clamping mechanism. The first rotating device allows the pattern card to rotate, thereby simulating dynamic and complex scenarios to test the laser radar, thus improving the functionality of the radar testing device, adding test scenarios, and improving the adaptability of the laser radar testing device to meet testing requirements. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of a lidar testing device according to an embodiment of the present invention.
[0030] Figure 2 This is a schematic diagram of the structure of the card moving mechanism in an embodiment of this utility model.
[0031] Figure 3 This is a schematic diagram of the card switching mechanism in an embodiment of this utility model.
[0032] Figure 4 This is a schematic diagram of the fixture mechanism according to an embodiment of the present invention.
[0033] Figure 5 yes Figure 4 Enlarged diagram of point A in the middle.
[0034] In the diagram, 1. Track; 2. Clamping mechanism; 3. Map moving mechanism; 4. Map switching mechanism; 21. Support base; 22. Clamp; 23. Second rotating device; 24. Third rotating device; 25. Alignment auxiliary tool; 26. Fourth rotating device; 27. Fine-tuning device; 28. Fan; 251. First magnet; 252. Second magnet; 271. First displacement device; 272. Second displacement device; 273. Third displacement device; 31. Sliding mechanism; 32. First rotating device; 33. Map frame; 34. Support plate; 311. Slider; 312. First drive device; 331. Hook; 41. Map compartment; 42. Switching frame; 43. Translation mechanism; 44. Gripper; 45. Second drive device. Detailed Implementation
[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0036] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are 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. They 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. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0039] Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0040] Please refer to Figure 1 A laser radar testing device according to an embodiment of the present invention includes a track 1, a clamp 22, a mechanism 2, and a card moving mechanism 3.
[0041] Track 1 is set to extend along the X-axis.
[0042] The clamp 22 mechanism 2 is located at one end of the track 1 and is used to install the lidar.
[0043] Please refer to Figure 2 The drawing card moving mechanism 3 includes a sliding mechanism 31, a first rotating device 32, and a drawing card frame 33. The sliding mechanism 31 is slidably connected to the track 1. The drawing card frame 33 and the sliding mechanism 31 are rotatably connected through the first rotating device 32, so that the drawing card frame 33 can rotate around the Z-axis. The drawing card frame 33 is used to install the drawing card.
[0044] The template frame 33 slides on the track 1 via the sliding mechanism 31, which in turn allows the template frame 33 to move on the track 1, thereby changing the distance between the template mounted on the template frame 33 and the fixture 22 mechanism 2. At the same time, the first rotating device 32 enables the template to rotate, thereby simulating dynamic and complex scenarios to test the lidar, thus improving the functionality of the lidar testing device, adding test scenarios, and enhancing the adaptability of the lidar testing device to meet testing requirements.
[0045] In some embodiments, the card moving mechanism 3 further includes a support plate 34, and the sliding mechanism 31 includes a slider 311 and a first driving device 312. The slider 311 is mounted on the bottom of the support plate 34 and is slidably connected to the track 1. The first driving device 312 is mounted on the support plate 34 and drives the slider 311 to move on the track 1. The first rotating device 32 is connected to the slider 311 through the support plate 34.
[0046] The first driving device 312 is equipped with a gear, and the track 1 is equipped with a pin. The gear and the pin cooperate, and the first driving device 312 drives the gear to rotate. The gear moves on the pin, thereby allowing the slider 311 to slide on the track 1, which drives the support plate 34 to move. The first rotating device 32 and the drawing frame 33 move with the movement of the support plate 34, realizing the movement of the drawing moving mechanism 3 on the track 1.
[0047] The first rotating device 32 includes a turntable rotatably connected to a support plate 34, and the turntable is also connected to a drawing frame 33.
[0048] A slewing bearing is also provided between the turntable and the support plate 34 to bear the weight of the drawing frame 33. The turntable can rotate on the slewing bearing. The rotation of the drawing frame 33 is achieved by the turntable, thereby simulating dynamic and complex scenarios to test the lidar.
[0049] The drawing frame 33 is formed by processing profiles, and a hook 331 is provided on the top of the drawing frame 33 for suspending the drawing.
[0050] Please refer to Figure 3The lidar testing device also includes a pattern switching mechanism 4, which is located on the track 1 at one end away from the fixture 22 mechanism 2. The pattern switching mechanism 4 includes a pattern compartment 41 for storing different patterns, a switching frame 42, a translation mechanism 43, and a lifting mechanism. The lifting mechanism includes a gripper 44 for grasping the pattern and a second drive device 45 for driving the gripper 44 to move along the Z-axis. The gripper 44 is slidably mounted on the switching frame 42, which is mounted on the translation mechanism 43. The translation mechanism 43 drives the switching frame 42 to move along the X-axis and is also mounted on the pattern compartment 41. This structure allows the switching frame 42 to remove the pattern from the pattern compartment 41, facilitating pattern replacement for the pattern moving mechanism 3.
[0051] Please refer to Figure 4 and Figure 5 The clamp mechanism 2 includes a support base 21, a clamp 22, and a second rotating device 23. The support base 21 is located at one end of the track 1, the second rotating device 23 is located on the support base 21, and the clamp 22 is located on the second rotating device 23. The second rotating device 23 can drive the clamp 22 to rotate along the Z-axis.
[0052] The support base 21 supports the clamp 22 and the device for controlling the movement of the clamp 22. The device for controlling the movement of the clamp 22 includes a second rotating device 23. The second rotating device 23 drives the clamp 22 to rotate along the Z-axis, providing a degree of freedom for the lidar mounted on the clamp 22.
[0053] The clamp 22 mechanism 2 also includes a third rotating device 24, through which the clamp 22 is connected to the second rotating device 23, and the third rotating device 24 can drive the clamp 22 to rotate along the Y-axis.
[0054] When the second rotating device 23 rotates, it can drive the third rotating device 24 and the clamp 22 to rotate together. The third rotating device 24 drives the clamp 22 to rotate along the Y-axis, providing a degree of freedom for the lidar installed on the clamp 22.
[0055] The clamp 22 mechanism 2 also includes a fourth rotating device 26, through which the clamp 22 is connected to the third rotating device 24. The fourth rotating device 26 can drive the clamp 22 to rotate along the X-axis.
[0056] When the third rotating device 24 rotates, it can drive the fourth rotating device 26 and the clamp 22 to rotate together. The fourth rotating device 26 drives the clamp 22 to rotate along the X-axis, providing a degree of freedom for the lidar installed on the clamp 22.
[0057] The clamping mechanism 2 also includes an alignment auxiliary tool 25, which is detachably mounted on the second rotating device 23. The alignment auxiliary tool 25 is used to assist in the installation of the lidar.
[0058] The alignment aid device assists in the alignment of the lidar. After alignment, the alignment aid tool 25 can be removed. Specifically, a first magnet 251 and a second magnet 252 that attract each other can be provided. The first magnet 251 is mounted on the second rotating device 23, and the second magnet 252 is connected to the alignment aid tool 25. Holes are drilled in the first magnet 251 and the second magnet 252, and the relative positions of the first magnet 251 and the second magnet 252 are positioned by alignment pins. Through this mechanism, the first magnet 251 is magnetically attracted to the second magnet 252, the alignment aid tool 25 is mounted on the second rotating device 23, and the first magnet 251 and the second magnet 252 are separated. The second magnet 252 and the alignment aid tool 25 are then disassembled.
[0059] The clamp 22 mechanism 2 also includes a fine-tuning device 27. The clamp 22 is connected to the fourth rotating device 26 through the fine-tuning device 27. The fine-tuning device 27 can drive the clamp 22 to move along the X-axis, the Y-axis and the Z-axis.
[0060] The fine-tuning device 27 includes a first displacement device 271, a second displacement device 272, and a third displacement device 273. The first displacement device 271 is connected to the fourth rotating device 26. The second displacement device 272 is mounted on the first displacement device 271. The third displacement device 273 is connected to the second displacement device 272 and is connected to the clamp 22. The first displacement device 271 can drive the second displacement device 272, the third displacement device 273, and the clamp 22 to move along the X-axis. The second displacement device 272 can drive the third displacement device 273 and the clamp 22 to move along the Z-axis. The third displacement device 273 can drive the clamp 22 to move along the Y-axis. With this structure, the position of the lidar on the clamp 22 can be fine-tuned.
[0061] The clamp 22 mechanism 2 also includes a lifting device. The second rotating device 23 is connected to the support base 21 through the lifting device. The lifting device can drive the second rotating device 23 to move along the Z-axis.
[0062] The lifting device can raise the overall height of the lidar on the fixture 22. The lifting device includes a worm gear, which is rotated to raise or lower the second rotating device 23.
[0063] The clamp 22 mechanism 2 also includes a fan 28, which is mounted on the second rotating device 23 and is used to dissipate heat from the lidar.
[0064] The fan 28 blows air towards the lidar on the clamp 22, thereby dissipating heat from the lidar. Furthermore, in this embodiment, the second rotating device 23, the third rotating device 24, and the fourth rotating device 26 are all hollow structures, further facilitating heat dissipation for the lidar.
[0065] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.
Claims
1. A lidar testing apparatus, characterized by, The laser radar test device comprises: a track; a clamp mechanism at one end of the track, the clamp mechanism being used for mounting a laser radar; a picture card moving mechanism, the picture card moving mechanism comprising a sliding mechanism, a first rotating device and a picture card frame, the sliding mechanism being slidably connected to the track, the picture card frame and the sliding mechanism being rotatably connected through the first rotating device, so that the picture card frame can rotate around the Z axis, the picture card frame being used for mounting a picture card.
2. The laser radar test device according to claim 1, wherein: the picture card moving mechanism further comprises a support plate; the sliding mechanism comprises a sliding block and a first driving device, the sliding block being mounted at the bottom of the support plate, the sliding block being slidably connected to the track, the first driving device being mounted on the support plate, the first driving device driving the sliding block to move on the track, the first rotating device being connected to the sliding block through the support plate.
3. The laser radar test device according to claim 2, wherein: the first rotating device comprises a rotating disc rotatably connected to the support plate, the rotating disc further connecting the picture card frame.
4. The laser radar test device according to claim 1, wherein: the clamp mechanism comprises a support seat, a clamp and a second rotating device, the support seat being arranged at one end of the track, the second rotating device being arranged on the support seat, the clamp being arranged on the second rotating device, the second rotating device being capable of driving the clamp to rotate along the Z axis.
5. The laser radar test device according to claim 4, wherein: the clamp mechanism further comprises a third rotating device, the clamp being connected to the second rotating device through the third rotating device, the third rotating device being capable of driving the clamp to rotate along the Y axis.
6. The laser radar test device according to claim 4, wherein: the clamp mechanism further comprises an alignment auxiliary tool, the alignment auxiliary tool being detachably arranged on the second rotating device, the alignment auxiliary tool being used for assisting the installation of the laser radar.
7. The laser radar test device according to claim 5, wherein: the clamp mechanism further comprises a fourth rotating device, the clamp being connected to the third rotating device through the fourth rotating device, the fourth rotating device being capable of driving the clamp to rotate along the X axis.
8. The laser radar test device according to claim 7, wherein: the clamp mechanism further comprises a fine adjustment device, the clamp being connected to the fourth rotating device through the fine adjustment device, the fine adjustment device being capable of driving the clamp to displace along the X axis direction, along the Y axis direction and along the Z axis direction.
9. The laser radar test device according to claim 4, wherein: the clamp mechanism further comprises a lifting device, the second rotating device being connected to the support seat through the lifting device, the lifting device being capable of driving the second rotating device to displace along the Z axis direction.
10. The laser radar test device according to claim 4, wherein: The clamp mechanism further comprises a fan, which is arranged on the second rotating device and used for dissipating heat for the laser radar.