Three-dimensional scanning laser radar based on MEMS micromirror

Abstract

The utility model discloses a three-dimensional scanning laser radar based on an MEMS micromirror, and relates to the technical field of laser detection. The device comprises a fixing block, a fixing device is arranged in the fixing block, and an installation assembly is arranged at the bottom of the fixing block. The fixing device comprises a clamping assembly and a fixing assembly, an adaptive groove is formed in the fixing block, the clamping assembly comprises a pressing rod, the pressing rod is in sliding fit with the bottom of the inner wall of the adaptive groove, and a toothed plate is arranged at the end, extending into the fixing block, of the pressing rod. The mounting block is placed in the adaptive groove by a worker, so that the pressing rod moves downwards to drive the fixing plate to move upwards, the fixing plate can be clamped with the mounting block through the fixing groove, and when the fixing plate moves, the clamping plate moves to fix the mounting block; and therefore, the stability of the fixing device is improved, the fixing effect is improved, and workers can operate conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of laser detection, specifically, it relates to a three-dimensional scanning lidar based on MEMS micromirrors. Background Technology

[0002] MEMS micromirror 3D scanning lidar is an important application of modern lidar technology. 3D scanning lidar can be used to detect target position, contour, and velocity. Its application areas are gradually expanding, including precision measurement, navigation and positioning, obstacle avoidance, and it is beginning to be applied to autonomous driving technology. 3D scanning lidar uses a rotating laser beam to form a scanning cross-section, thereby detecting the feature information of the object under test. Currently, 3D scanning lidar performs multi-layer scanning in the vertical direction, 360° in the horizontal direction, and up to 40° in the vertical direction, effectively reflecting the feature information of the object under test. It is suitable for multiple fields, such as navigation in autonomous driving and shape contour detection.

[0003] Existing 3D scanning LiDAR requires a fixed device for operation to increase its stability and improve scanning performance. However, the lack of suitable fixing devices makes it inconvenient for operators, resulting in low fixing efficiency and poor fixing effect. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a three-dimensional scanning lidar based on MEMS micromirrors, which solves the technical problems of low fixing efficiency and poor fixing effect of the fixing device in the prior art.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A three-dimensional scanning lidar based on MEMS micromirrors includes a fixing block, a fixing device installed inside the fixing block, and a mounting component installed at the bottom of the fixing block.

[0007] The fixing device includes a snap-fit ​​assembly and a fixing assembly. The fixing block has an adapter groove inside. The snap-fit ​​assembly includes a pressure rod that slides on the bottom of the inner wall of the adapter groove. A toothed plate is installed at one end of the pressure rod that extends into the fixing block. Two gears are meshed on the surface of the toothed plate. A rotating rod is installed on one side of the gears. A bevel gear one is installed on the surface of the rotating rod. A bevel gear two is meshed on the surface of the bevel gear one. A transmission rod is installed inside the bevel gear two. A fixing plate one is threaded on the surface of the transmission rod. The fixing plate one slides on the bottom of the inner wall of the adapter groove. The fixing assembly is installed inside the fixing plate one. A spring one is installed inside the fixing block. The end of the spring one near the toothed plate is fixedly connected to the toothed plate.

[0008] Optionally, the fixing assembly includes a U-shaped moving rod, a moving block is mounted on one side of the fixing plate, one end of the U-shaped moving rod is slidably fitted inside the moving block and extends to the outside of the moving block, the other end of the U-shaped moving rod is slidably fitted inside the fixing plate, a limiting groove is formed at the end of the U-shaped moving rod inside the fixing plate, a U-shaped sliding rod is slidably fitted inside the limiting groove, a locking plate is mounted on one side of the U-shaped sliding rod, a moving plate is mounted on the top of the U-shaped sliding rod, a moving groove is formed on the top of the fixing plate, the moving plate is slidably fitted inside the moving groove, the locking plate is slidably fitted with the 3D laser scanning instrument, a spring three is installed inside the fixing plate, the end of the spring three near the U-shaped sliding rod is fixedly connected to the U-shaped sliding rod, a spring two is installed inside the fixing plate, the end of the spring two near the U-shaped moving rod is fixedly connected to the U-shaped moving rod.

[0009] Optionally, the mounting assembly includes a support block, which is installed at the bottom of a fixed block. A mounting plate is installed at the bottom of the support block. One end of the mounting plate has a threaded groove. A mounting disc is slidably fitted on the surface of the mounting plate. A second fixed plate is installed at the bottom of the mounting disc. A fixing bolt is installed inside the second fixed plate. A rotating bolt is installed at the top of the mounting disc. A mounting groove is opened inside the mounting disc. The rotating bolt is slidably fitted inside the mounting groove. The rotating bolt engages with the threaded groove through the threaded thread.

[0010] Optionally, the adapter slot has a sliding mounting block inside, and the mounting block has two fixing slots inside. A fixing plate slides inside the fixing slots, and a 3D laser scanner is mounted on the top of the mounting block.

[0011] Optionally, the movable block is equipped with a second limiting block inside, which slides with one end of the U-shaped movable rod; the fixed plate is equipped with a first limiting block inside, which slides with the other end of the U-shaped movable rod; and the fixed plate is equipped with a third limiting block inside, which slides with the U-shaped sliding rod.

[0012] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0013] The operator places the mounting block into the adapter slot, causing the pressure rod to move downwards, which in turn moves the fixing plate upwards. This allows the fixing plate to engage with the mounting block through the fixing slot. As the fixing plate moves, the locking plate moves as well, thus fixing the mounting block in place. This improves the stability of the fixing device, enhances the fixing effect, and facilitates operation by the operator.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0016] Figure 1 This is a schematic diagram of the front structure of the fixing block of the three-dimensional scanning lidar based on MEMS micromirrors of this utility model;

[0017] Figure 2 This is a schematic diagram of the bottom structure of the fixing block of the three-dimensional scanning lidar based on MEMS micromirrors of this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the fixed block of the three-dimensional scanning lidar based on MEMS micromirrors of this utility model;

[0019] Figure 4 This is a schematic diagram of the side cross-sectional structure of the fixed block of the three-dimensional scanning lidar based on MEMS micromirrors of this utility model.

[0020] Figure 5 This is a schematic diagram of a cross-sectional view of one side of the fixing plate of the three-dimensional scanning lidar based on MEMS micromirrors of this utility model.

[0021] In the diagram: 1. Fixed block; 2. Mounting block; 3. Fixed groove; 4. 3D laser scanner; 5. Fixed plate one; 6. Fixed plate two; 7. Mounting plate; 8. Fixed bolt; 9. Rotating bolt; 10. Mounting groove; 11. Support block; 12. Mounting plate; 13. Threaded groove; 14. Clamping plate; 15. Moving groove; 16. Moving plate; 17. Moving block; 18. U-shaped moving rod; 19. Pressure rod; 20. Toothed plate; 21. Spring one; 22. Gear; 23. Rotating rod; 24. Bevel gear one; 25. Bevel gear two; 26. Transmission rod; 27. Spring two; 28. Limiting block one; 29. ​​Limiting groove; 30. U-shaped sliding rod; 31. Limiting block two; 32. Limiting block three; 33. Adaptor groove; 34. Spring three.

[0022] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Please see Figure 1-5 As shown, this embodiment provides a three-dimensional scanning lidar based on MEMS micromirrors, including a fixing block 1, a fixing device installed inside the fixing block 1, and an installation component installed at the bottom of the fixing block 1.

[0025] The fixing device includes a snap-fit ​​assembly and a fixing assembly. The fixing block 1 has an adapter groove 33 inside. The snap-fit ​​assembly includes a pressure rod 19, which is slidably fitted to the bottom of the inner wall of the adapter groove 33. One end of the pressure rod 19 extending into the fixing block 1 is equipped with a toothed plate 20. Two gears 22 are meshed on the surface of the toothed plate 20. A rotating rod 23 is installed on one side of the gears 22. A bevel gear 24 is installed on the surface of the rotating rod 23. A bevel gear 25 is meshed on the surface of the bevel gear 24. A transmission rod 26 is installed inside the bevel gear 25. A fixing plate 5 is threaded onto the surface of the transmission rod 26. The fixing plate 5 is slidably fitted to the bottom of the inner wall of the adapter groove 33. The fixing assembly is installed inside the fixing plate 5. A spring 21 is installed inside the fixing block 1. The end of the spring 21 near the toothed plate 20 is fixedly connected to the toothed plate 20.

[0026] One application of this embodiment is as follows: In use, firstly, the worker fixes the device to the required equipment using the fixing plate 6 and fixing bolts 8. The worker connects the mounting plate 12 and mounting groove 10. The worker rotates the fixing block 1 so that the threaded groove 13 corresponds to the rotating bolt 9. The worker rotates the rotating bolt 9 to fix the fixing block 1. The worker places the mounting block 2 into the fitting groove 33. The worker presses the mounting block 2, causing the pressure rod 19 to move downwards. The movement of the pressure rod 19 moves the toothed plate 20, which in turn moves the gear 22. The rotation of the gear 22 moves the rotating rod 23, which in turn moves the first bevel gear 24. The rotation of the first bevel gear 24 moves the second bevel gear 25, which in turn moves the transmission rod 26. The rotation of the transmission rod 26 moves the fixing plate 5 upwards, and the movement of the fixing plate 5 moves the moving block 17. The movement of the moving block 17 causes the U-shaped moving rod 18 to move. When the U-shaped moving rod 18 moves to contact the mounting block 2, it moves downward. The U-shaped moving rod 18 causes the limiting groove 29 to move. When the limiting groove 29 moves to match the U-shaped sliding rod 30, the U-shaped sliding rod 30 moves under the action of the spring 34. The movement of the U-shaped sliding rod 30 causes the locking plate 14 to move. When the locking plate 14 moves to the top of the mounting block 2, the mounting block 2 is fixed. When the operator needs to release the mounting block 2, the operator moves the moving plate 16. The movement of the moving plate 16 causes the U-shaped sliding rod 30 to move out of the limiting groove 29. Under the action of the spring 27, the U-shaped moving rod 18 moves upward, thereby limiting the U-shaped sliding rod 30. The movement of the U-shaped sliding rod 30 causes the locking plate 14 to move, thereby releasing the fixing of the mounting block 2.

[0027] The fixing assembly of this embodiment includes a U-shaped moving rod 18. A moving block 17 is installed on one side of the fixing plate 1 5. One end of the U-shaped moving rod 18 is slidably engaged inside the moving block 17 and extends to the outside of the moving block 17. The other end of the U-shaped moving rod 18 is slidably engaged inside the fixing plate 1 5. A limiting groove 29 is opened at the end of the U-shaped moving rod 18 inside the fixing plate 1 5. A U-shaped sliding rod 30 is slidably engaged inside the limiting groove 29. A locking plate 14 is installed on one side of the U-shaped sliding rod 30. A moving plate 16 is installed on the top of the U-shaped sliding rod 30. A moving groove 15 is opened on the top of the fixing plate 1 5. The moving plate 16 is slidably engaged inside the moving groove 15. The locking plate 14 is slidably engaged with the three-dimensional laser scanning device 4. A spring 34 is installed inside the fixing plate 1 5. The end of the spring 34 near the U-shaped sliding rod 30 is fixedly connected to the U-shaped sliding rod 30. A spring 27 is installed inside the fixing plate 1 5. The end of the spring 27 near the U-shaped moving rod 18 is fixedly connected to the U-shaped moving rod 18. When the U-shaped moving rod 18 moves to contact the mounting block 2, it moves downward. The U-shaped moving rod 18 drives the limiting groove 29 to move. When the limiting groove 29 moves to match the U-shaped sliding rod 30, the U-shaped sliding rod 30 moves under the action of the spring 34. The movement of the U-shaped sliding rod 30 drives the clamping plate 14 to move. When the clamping plate 14 moves to the top of the mounting block 2, the mounting block 2 can be fixed.

[0028] The mounting assembly in this embodiment includes a support block 11, which is mounted on the bottom of a fixing block 1. A mounting plate 12 is mounted on the bottom of the support block 11. One end of the mounting plate 12 has a threaded groove 13. A mounting disc 7 is slidably fitted onto the surface of the mounting plate 12. A fixing plate 6 is mounted on the bottom of the mounting disc 7. A fixing bolt 8 is disposed inside the fixing plate 6. A rotating bolt 9 is disposed on the top of the mounting disc 7. A mounting groove 10 is disposed inside the mounting disc 7. The mounting plate 12 is slidably fitted inside the mounting groove 10. The rotating bolt 9 is threadedly engaged with the mounting plate 12 through the threaded groove 13. Workers can fix the mounting plate 12 to the equipment they need using the fixing plate 6 and the fixing bolt 8. Workers can connect the mounting plate 12 to the mounting groove 10.

[0029] In this embodiment, the movable block 17 is equipped with a second limiting block 31, which slides with one end of the U-shaped movable rod 18. The fixed plate 5 is equipped with a first limiting block 28, which slides with the other end of the U-shaped movable rod 18. The fixed plate 5 is equipped with a third limiting block 32, which slides with the U-shaped sliding rod 30. By setting the second limiting block 31, the first limiting block 28, and the third limiting block 32, the U-shaped movable rod 18 and the U-shaped sliding rod 30 can be limited, maintaining stability during operation.

[0030] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A three-dimensional scanning lidar based on MEMS micromirrors, characterized in that, The device includes a fixing block (1), a fixing device is installed inside the fixing block (1), and an installation component is installed at the bottom of the fixing block (1). The fixing device includes a snap-fit ​​component and a fixing component. An adapter groove (33) is opened inside the fixing block (1). The snap-fit ​​component includes a pressure rod (19). The pressure rod (19) is slidably fitted on the bottom of the inner wall of the adapter groove (33). A toothed plate (20) is installed at one end of the pressure rod (19) extending into the interior of the fixing block (1). Two gears (22) are meshed on the surface of the toothed plate (20). A rotating rod (23) is installed on one side of the gears (22). The rotating rod (23) is equipped with a bevel gear 1 (24), and a bevel gear 2 (25) is meshed on the surface of the bevel gear 1 (24). A transmission rod (26) is installed inside the bevel gear 2 (25). A fixing plate 1 (5) is threaded on the surface of the transmission rod (26). The fixing plate 1 (5) is slidably fitted on the bottom of the inner wall of the adapter groove (33). A fixing component is installed inside the fixing plate 1 (5). A spring 1 (21) is installed inside the fixing block (1). The end of the spring 1 (21) near the toothed plate (20) is fixedly connected to the toothed plate (20).

2. The three-dimensional scanning lidar based on MEMS micromirrors according to claim 1, characterized in that, The fixing assembly includes a U-shaped moving rod (18), a moving block (17) is installed on one side of the fixing plate (5), one end of the U-shaped moving rod (18) is slidably fitted inside the moving block (17) and extends to the outside of the moving block (17), the other end of the U-shaped moving rod (18) is slidably fitted inside the fixing plate (5), a limiting groove (29) is opened at one end of the U-shaped moving rod (18) inside the fixing plate (5), a U-shaped sliding rod (30) is slidably fitted inside the limiting groove (29), a retaining plate (14) is installed on one side of the U-shaped sliding rod (30), and the U-shaped sliding rod (30) is slidably fitted inside the limiting groove (29). The top of the 0) is equipped with a movable plate (16), and the top of the fixed plate (5) is provided with a movable groove (15). The movable plate (16) is slidably fitted inside the movable groove (15). The card plate (14) is slidably fitted with the three-dimensional laser scanner (4). The fixed plate (5) is equipped with a spring three (34). The end of the spring three (34) near the U-shaped sliding rod (30) is fixedly connected to the U-shaped sliding rod (30). The fixed plate (5) is equipped with a spring two (27). The end of the spring two (27) near the U-shaped movable rod (18) is fixedly connected to the U-shaped movable rod (18).

3. The three-dimensional scanning lidar based on MEMS micromirrors according to claim 1, characterized in that, The mounting assembly includes a support block (11), which is mounted on the bottom of a fixed block (1). A mounting plate (12) is mounted on the bottom of the support block (11). A threaded groove (13) is provided at one end of the mounting plate (12). A mounting disc (7) is slidably fitted on the surface of the mounting plate (12). A second fixed plate (6) is mounted on the bottom of the mounting disc (7). A fixing bolt (8) is provided inside the second fixed plate (6). A rotating bolt (9) is provided on the top of the mounting disc (7). A mounting groove (10) is provided inside the mounting disc (7). The mounting plate (12) is slidably fitted inside the mounting groove (10). The rotating bolt (9) is threadedly fitted with the mounting plate (12) through the threaded groove (13).

4. The three-dimensional scanning lidar based on MEMS micromirrors according to claim 1, characterized in that, The adapter slot (33) has a sliding fit with the mounting block (2), and the mounting block (2) has two fixing slots (3) inside. The fixing plate (5) is slidably fitted inside the fixing slot (3), and the top of the mounting block (2) is equipped with a three-dimensional laser scanner (4).

5. The three-dimensional scanning lidar based on MEMS micromirrors according to claim 1, characterized in that, The movable block (17) is equipped with a limiting block two (31), which is slidably engaged with one end of the U-shaped movable rod (18). The fixed plate one (5) is equipped with a limiting block one (28), which is slidably engaged with the other end of the U-shaped movable rod (18). The fixed plate one (5) is equipped with a limiting block three (32), which is slidably engaged with the U-shaped sliding rod (30).

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