A laser radar photoelectric detector adjusting device

Abstract

The application discloses a kind of laser radar photoelectric detector adjusting device, it is related to laser radar technical field, including installation fixed ring, the bottom of the installation fixed ring is fixedly connected four equiangularly arranged support leg mechanism, the inner side of installation fixed ring is rotatably connected rotary ring, rotary ring and installation fixed ring between being equipped with rotary drive mechanism, first deflection ring mechanism is equipped in rotary ring, second deflection ring mechanism is equipped in first deflection ring mechanism, rotary ring and first deflection ring mechanism between being equipped with deflection adjusting mechanism, height adjusting mechanism is equipped in second deflection ring mechanism, height adjusting mechanism connects adjusting seat mechanism, adjusting seat mechanism is equipped with detector body, the application can be adjusted to horizontal state by setting support leg mechanism to the height of installation fixed ring is adjusted, improves the efficiency of laser radar photoelectric detector adjusting.

Description

Technical Field

[0001] This invention relates to the field of lighting equipment technology, specifically to a lidar photoelectric detector adjustment device. Background Technology

[0002] LiDAR, as a high-precision detection sensor, is widely used in fields such as autonomous driving, 3D mapping, and robot navigation. The photodetector is one of the core components of LiDAR, used to receive reflected laser signals and convert them into electrical signals. In practical applications, the position and angle of the photodetector need to be precisely adjusted to ensure that its photosensitive surface is accurately aligned with the incident laser beam, thereby guaranteeing detection sensitivity and measurement accuracy. Existing LiDAR photodetector adjustment devices mainly have the following shortcomings: Limited degrees of freedom of adjustment: Traditional adjustment devices can usually only achieve adjustment in a single direction (such as pitch or horizontal), which is difficult to meet the needs of complex optical path systems for precise alignment with multiple degrees of freedom.

[0003] Low adjustment accuracy: The adjustment accuracy is greatly affected by human factors when using manual adjustment or simple mechanical structure, making it difficult to achieve precise adjustment at the micrometer or arcsecond level.

[0004] Poor stability: After locking, the adjustment mechanism is prone to drift due to vibration or external force, which affects the stability of the detector during long-term operation.

[0005] Limited adaptability: Different models of lidar have different requirements for the installation position and angle of the detector, and traditional devices cannot quickly adapt to different installation needs.

[0006] Installation and debugging are cumbersome: lacking a systematic adjustment mechanism, the installation and debugging process relies on the operator's experience, which is time-consuming and labor-intensive.

[0007] Inconvenient leveling adjustment: When used on a non-horizontal mounting surface, there is a lack of an effective leveling adjustment mechanism, making it difficult to ensure the levelness of the detector's reference surface. Summary of the Invention

[0008] This invention provides a lidar photoelectric detector adjustment device, which solves the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: A lidar photoelectric detector adjustment device includes a mounting ring, four support legs fixedly connected to the bottom of the mounting ring at equal angles, a rotating ring rotatably connected to the inner side of the mounting ring, a rotation drive mechanism between the rotating ring and the mounting ring, a first deflection ring mechanism within the rotating ring, a second deflection ring mechanism within the first deflection ring mechanism, a deflection adjustment mechanism between the rotating ring and the first deflection ring mechanism, a height adjustment mechanism within the second deflection ring mechanism, and an adjustment seat mechanism connected to the height adjustment mechanism. A detector body is mounted on the adjustment seat mechanism. The support legs are used to adjust the state of the mounting ring, the rotation drive mechanism is used to drive the rotating ring to rotate, the deflection adjustment mechanism is used to adjust the deflection state of the first deflection ring mechanism, the first and second deflection ring mechanisms are used to adjust the deflection angle of the detector body, the height adjustment mechanism is used to adjust the state of the adjustment seat mechanism, and the adjustment seat mechanism is used to adjust the state of the detector body.

[0010] As a preferred embodiment of the present invention, the support leg mechanism includes a fixed frame fixed to the bottom of the mounting ring, the fixed frame being rotatably connected to an adjustment shaft, an adjustment handle being fixedly connected to one end of the adjustment shaft located on the fixed frame, a first bevel gear being fixedly connected to the end of the adjustment shaft away from the adjustment handle, the first bevel gear meshing with a second bevel gear, a threaded sleeve being coaxially fixedly connected to the second bevel gear, a support threaded rod being internally threaded connected to the threaded sleeve, and a support block being fixedly connected to the bottom of the support threaded rod.

[0011] As a preferred embodiment of the present invention, the rotary drive mechanism includes a first motor base fixed to the side of the mounting ring, the first motor base being connected to a first motor, the output shaft of the first motor being fixedly connected to a first gear, the first gear meshing with a gear ring, and the gear ring being fixed to the outside of the rotary ring.

[0012] As a preferred embodiment of the present invention, the first deflection ring mechanism includes two symmetrically arranged first deflection shafts that are rotatably connected to the rotating ring, and the first deflection ring is fixedly connected between the two first deflection shafts.

[0013] As a preferred embodiment of the present invention, the second deflection ring mechanism includes two symmetrically arranged second deflection shafts that are rotatably connected to the first deflection ring. The second deflection ring is fixedly connected between the two second deflection shafts. The first deflection shaft and the second deflection shaft are perpendicular to each other. A second motor is provided on the outer side of the first deflection ring. The output shaft of the second motor is fixedly connected to one of the second deflection shafts.

[0014] As a preferred embodiment of the present invention, the deflection adjustment mechanism includes a third motor base fixed on a rotating ring, a third motor is provided on the third motor base, the output shaft of the third motor is fixedly connected to a second gear, the second gear meshes with the third gear, and the third gear and the first deflection shaft are coaxially fixedly connected.

[0015] As a preferred embodiment of the present invention, the height adjustment mechanism includes a fixed frame fixed to the inner side of the second deflection ring, a fourth motor provided in the middle of the fixed frame, the output shaft of the fourth motor fixedly connected to a third bevel gear, the third bevel gear meshing with two fourth bevel gears, the fourth bevel gears being coaxially fixedly connected to a threaded rod, the threaded rod being rotatably connected to the fixed frame, the threaded rod being threadedly connected to an adjusting block, and the adjusting block being slidably connected to the fixed frame.

[0016] As a preferred embodiment of the present invention, the adjustment seat mechanism includes a first deflection seat fixed on the adjustment block. Two first deflection seats are provided. The first deflection seats are rotatably connected to the adjustment rod. The end of the adjustment rod away from the first deflection seat is rotatably connected to the second deflection seat. The second deflection seat is fixedly connected to the mounting seat. The detector body is located in the mounting seat.

[0017] The present invention has the following advantages: 1. Multi-degree-of-freedom precision adjustment for high alignment accuracy: A rotary drive mechanism enables continuous 360-degree rotation of the detector around its vertical axis; a deflection adjustment mechanism drives a first deflection ring mechanism to achieve deflection of the detector around a first horizontal axis; a second deflection ring mechanism achieves deflection of the detector around a second horizontal axis; a height adjustment mechanism enables vertical raising and lowering of the detector; and a linkage structure of the adjustment seat mechanism enables fine-tuning of the detector's end-effector's attitude. This multi-degree-of-freedom combined adjustment allows the detector's photosensitive surface to be precisely aligned with the incident laser beam, significantly improving detection accuracy.

[0018] 2. Independently adjustable support legs for easy level control: The support leg mechanism uses bevel gear transmission. The threaded sleeve rotates via an adjustment handle, raising and lowering the support threaded rod, allowing independent adjustment of the height of each support leg. The four support legs are set at equal angles, enabling flexible adjustment of the overall level of the device, adapting to uneven mounting surfaces, and ensuring the horizontal stability of the detector's reference surface.

[0019] 3. Precision transmission structure and good adjustment stability: Each adjustment mechanism adopts precision transmission methods such as gear meshing, bevel gear transmission, and thread transmission, combined with motor drive, to achieve precise control. After adjustment, each transmission mechanism has good self-locking properties, effectively preventing drift caused by vibration or external force, and ensuring the stability of the detector during long-term operation.

[0020] 4. High adaptability and good compatibility: The adjustment mechanism is connected to the mounting base via a linkage structure, which can adapt to the installation requirements of different detector models. Each adjustment mechanism has a large adjustment range, which can meet the requirements of various optical path layouts for detector position and angle.

[0021] 5. High degree of automation and convenient operation: All adjustment mechanisms are driven by motors, and can be automatically adjusted and remotely controlled through the control system, reducing manual intervention and improving debugging efficiency and accuracy.

[0022] 6. Compact structure and high space utilization: It adopts a nested deflection ring structure (the first deflection ring mechanism contains the second deflection ring mechanism), and all adjustment mechanisms are integrated in a limited space. The structure is compact, occupies little space, and is easy to integrate into the lidar system. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the first-view structure of a lidar photoelectric detector adjustment device.

[0025] Figure 2 This is a schematic diagram of the second-view structure of a lidar photoelectric detector adjustment device.

[0026] Figure 3 This is a schematic diagram of a third-view structure of a lidar photoelectric detector adjustment device.

[0027] Figure 4 This is a schematic diagram of the support leg mechanism in a lidar photoelectric detector adjustment device.

[0028] In the diagram: 1. Mounting ring; 2. Support leg mechanism; 201. Fixing frame; 202. Adjusting shaft; 203. Adjusting handle; 204. First bevel gear; 205. Second bevel gear; 206. Threaded sleeve; 207. Support threaded rod; 208. Support block; 3. Rotating ring; 4. Rotation drive mechanism; 401. First motor base; 402. First motor; 403. First gear; 404. Gear ring; 5. First deflection ring mechanism; 501. First deflection shaft; 502. First deflection ring; 6. Second deflection ring mechanism; 601. Second deflection shaft; 602, second deflection ring; 603, second motor; 7, deflection adjustment mechanism; 701, third motor base; 702, third motor; 703, second gear; 704, third gear; 8, height adjustment mechanism; 801, fixed frame; 802, fourth motor; 803, third bevel gear; 804, fourth bevel gear; 805, threaded rod; 806, adjusting block; 9, adjusting seat mechanism; 901, first deflection seat; 902, adjusting rod; 903, second deflection seat; 904, mounting base; 10, detector body. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0030] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they should not be construed as limitations on the present invention.

[0031] For examples, please refer to Figures 1-4 A laser radar photoelectric detector adjustment device includes a mounting ring 1. Four equally angled support leg mechanisms 2 are fixedly connected to the bottom of the mounting ring 1. A rotating ring 3 is rotatably connected to the inner side of the mounting ring 1. A rotation drive mechanism 4 is provided between the rotating ring 3 and the mounting ring 1. A first deflection ring mechanism 5 is provided inside the rotating ring 3. A second deflection ring mechanism 6 is provided inside the first deflection ring mechanism 5. A deflection adjustment mechanism 7 is provided between the rotating ring 3 and the first deflection ring mechanism 5. A height adjustment mechanism 8 is provided inside the second deflection ring mechanism 6. The height adjustment mechanism 8 is connected to an adjustment seat mechanism 9. A detector body 10 is mounted on the adjustment seat mechanism 9. The support leg mechanisms 2 are used to adjust the state of the mounting ring 1. The rotation drive mechanism 4 is used to drive the rotating ring 3 to rotate. The deflection adjustment mechanism 7 is used to adjust the deflection state of the first deflection ring mechanism 5. The first deflection ring mechanism 5 and the second deflection ring mechanism 6 are used to adjust the deflection angle of the detector body 10. The height adjustment mechanism 8 is used to adjust the state of the adjustment seat mechanism 9. The adjustment seat mechanism 9 is used to adjust the state of the detector body 10.

[0032] The support leg mechanism 2 includes a fixed frame 201 fixed to the bottom of the mounting ring 1. The fixed frame 201 is rotatably connected to an adjustment shaft 202. An adjustment handle 203 is fixedly connected to one end of the adjustment shaft 202 located on the fixed frame 201. A first bevel gear 204 is fixedly connected to the other end of the adjustment shaft 202 away from the adjustment handle 203. The first bevel gear 204 meshes with a second bevel gear 205. The second bevel gear 205 is coaxially fixedly connected to a threaded sleeve 206. A support threaded rod 207 is internally threaded into the threaded sleeve 206. A support block 208 is fixedly connected to the bottom of the support threaded rod 207.

[0033] Specifically, when the adjusting handle 203 is rotated, the threaded sleeve 206 is driven to rotate through the meshing transmission of the first bevel gear 204 and the second bevel gear 205, causing the supporting threaded rod 207 to rise or fall, thereby adjusting the height of the supporting leg. By independently adjusting the height of the four supporting legs, the mounting ring 1 can be adjusted to a horizontal position.

[0034] The rotary drive mechanism 4 includes a first motor base 401 fixed to the side of the mounting ring 1, the first motor base 401 is connected to a first motor 402, the output shaft of the first motor 402 is fixedly connected to a first gear 403, the first gear 403 meshes with a gear ring 404, and the gear ring 404 is fixed to the outside of the rotary ring 3.

[0035] Specifically, when the first motor 402 starts, it drives the rotating ring 3 to rotate relative to the mounting and fixing ring 1 through gear transmission.

[0036] The first deflection ring mechanism 5 includes two symmetrically arranged first deflection shafts 501 rotatably connected to the rotating ring 3, and a first deflection ring 502 is fixedly connected between the two first deflection shafts 501. The second deflection ring mechanism 6 includes two symmetrically arranged second deflection shafts 601 rotatably connected to the first deflection ring 502, and a second deflection ring 602 is fixedly connected between the two second deflection shafts 601. The first deflection shafts 501 and the second deflection shafts 601 are perpendicular to each other. A second motor 603 is provided on the outer side of the first deflection ring 502, and the output shaft of the second motor 603 is fixedly connected to one of the second deflection shafts 601. The deflection adjustment mechanism 7 includes a third motor base 701 fixed to the rotating ring 3, a third motor 702 provided on the third motor base 701, a second gear 703 fixedly connected to the output shaft of the third motor 702, the second gear 703 meshing with a third gear 704, and the third gear 704 coaxially and fixedly connected to the first deflection shaft 501.

[0037] Specifically, when the third motor 702 starts, it drives the first deflection shaft 501 to rotate via gear transmission, thereby causing the first deflection ring 502 and the second deflection ring mechanism 6 installed therein to deflect as a whole. Through the coordinated action of the first deflection ring mechanism 5 and the second deflection ring mechanism 6, the detector body 10 can be adjusted in two mutually perpendicular directions, covering any direction in space.

[0038] The height adjustment mechanism 8 includes a fixed frame 801 fixed inside the second deflection ring 602. A fourth motor 802 is provided in the middle of the fixed frame 801. The output shaft of the fourth motor 802 is fixedly connected to a third bevel gear 803. The third bevel gear 803 meshes with two fourth bevel gears 804. The fourth bevel gears 804 are coaxially fixedly connected to a threaded rod 805. The threaded rod 805 and the fixed frame 801 are rotatably connected. The threaded rod 805 is threadedly connected to an adjusting block 806. The adjusting block 806 and the fixed frame 801 are slidably connected. The adjustment seat mechanism 9 includes a first deflection seat 901 fixed on the adjusting block 806. There are two first deflection seats 901. The first deflection seat 901 is rotatably connected to an adjusting rod 902. The end of the adjusting rod 902 away from the first deflection seat 901 is rotatably connected to a second deflection seat 903. The second deflection seat 903 is fixedly connected to a mounting base 904. The detector body 10 is located inside the mounting base 904.

[0039] Specifically, when the fourth motor 802 starts, it drives the two threaded rods 805 to rotate synchronously in opposite directions through bevel gear transmission, causing the two adjusting blocks 806 to move towards or away from each other. When the two adjusting blocks 806 move towards or away from each other, the mounting base 904 is deflected through the linkage of the adjusting rod 902, thereby fine-tuning the pitch attitude of the detector body 10.

[0040] The workflow of this invention is as follows: Leveling adjustment: Place the device in the installation position and adjust the height of the four support leg mechanisms 2 by adjusting the handle 203 to make the mounting ring 1 level.

[0041] Horizontal rotation adjustment: Start the first motor 402 to drive the rotating ring 3 to rotate, so that the detector body 10 is aligned with the target direction in the horizontal plane.

[0042] Deflection angle adjustment: Start the third motor 702 to drive the first deflection ring 502 to deflect around the first horizontal axis; start the second motor 603 to drive the second deflection ring 602 to deflect around the second horizontal axis, so that the photosensitive surface of the detector body 10 is roughly aligned with the incident laser beam.

[0043] Height adjustment: Start the fourth motor 802 to drive the two adjustment blocks 806 to move, and finely adjust the height and pitch attitude of the detector body 10 through the adjustment seat mechanism 9.

[0044] Fine-tuning and locking: Through precise adjustments of each adjustment mechanism, the photosensitive surface of the detector body 10 is precisely aligned with the laser beam. The self-locking performance of each transmission mechanism ensures the stability of the position after adjustment.

[0045] Debugging complete: Once the position and angle of the detector body 10 are adjusted to the correct position, subsequent photoelectric detection operations can be carried out.

[0046] Through the above-mentioned multi-degree-of-freedom precision adjustment design, this invention achieves precise alignment of the lidar photodetector in space, significantly improving the detection accuracy and debugging efficiency of lidar.

[0047] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser radar photoelectric detector adjustment device, comprising a mounting and fixing ring, characterized in that, The bottom of the mounting ring is fixedly connected to four support legs arranged at equal angles. A rotating ring is rotatably connected to the inner side of the mounting ring. A rotation drive mechanism is provided between the rotating ring and the mounting ring. A first deflection ring mechanism is provided inside the rotating ring. A second deflection ring mechanism is provided inside the first deflection ring mechanism. A deflection adjustment mechanism is provided between the rotating ring and the first deflection ring mechanism. A height adjustment mechanism is provided inside the second deflection ring mechanism. The height adjustment mechanism is connected to an adjustment seat mechanism. The detector body is provided on the adjustment seat mechanism. The support legs mechanism is used to adjust the state of the mounting ring. The rotation drive mechanism is used to drive the rotating ring to rotate. The deflection adjustment mechanism is used to adjust the deflection state of the first deflection ring mechanism. The first and second deflection ring mechanisms are used to adjust the deflection angle of the detector body. The height adjustment mechanism is used to adjust the state of the adjustment seat mechanism. The adjustment seat mechanism is used to adjust the state of the detector body.

2. The lidar photodetector adjustment device according to claim 1, characterized in that, The support leg mechanism includes a fixed frame fixed to the bottom of the mounting ring, the fixed frame is rotatably connected to an adjustment shaft, an adjustment handle is fixedly connected to one end of the adjustment shaft located on the fixed frame, a first bevel gear is fixedly connected to the end of the adjustment shaft away from the adjustment handle, the first bevel gear meshes with a second bevel gear, the second bevel gear is coaxially fixedly connected to a threaded sleeve, a support threaded rod is internally threaded to the threaded sleeve, and a support block is fixedly connected to the bottom of the support threaded rod.

3. The lidar photodetector adjustment device according to claim 1, characterized in that, The rotary drive mechanism includes a first motor base fixed to the side of the mounting ring, the first motor base being connected to a first motor, the output shaft of the first motor being fixedly connected to a first gear, the first gear meshing with a gear ring, and the gear ring being fixed to the outside of the rotary ring.

4. The lidar photodetector adjustment device according to claim 1, characterized in that, The first deflection ring mechanism includes two symmetrically arranged first deflection shafts that are rotatably connected to the rotating ring, and the first deflection ring is fixedly connected between the two first deflection shafts.

5. The lidar photodetector adjustment device according to claim 4, characterized in that, The second deflection ring mechanism includes two symmetrically arranged second deflection shafts that are rotatably connected to the first deflection ring. The second deflection ring is fixedly connected between the two second deflection shafts. The first deflection shaft and the second deflection shaft are perpendicular to each other. A second motor is provided on the outer side of the first deflection ring. The output shaft of the second motor is fixedly connected to one of the second deflection shafts.

6. The laser radar photodetector adjustment device according to claim 4, characterized in that, The deflection adjustment mechanism includes a third motor base fixed on a rotating ring, a third motor on the third motor base, a second gear fixedly connected to the output shaft of the third motor, the second gear meshing with the third gear, and the third gear and the first deflection shaft being coaxially fixedly connected.

7. The lidar photodetector adjustment device according to claim 5, characterized in that, The height adjustment mechanism includes a fixed frame fixed inside the second deflection ring, a fourth motor in the middle of the fixed frame, the output shaft of the fourth motor fixedly connected to a third bevel gear, the third bevel gear meshing with two fourth bevel gears, the fourth bevel gears coaxially fixedly connected to a threaded rod, the threaded rod and the fixed frame being rotatably connected, the threaded rod being threadedly connected to an adjusting block, and the adjusting block and the fixed frame being slidably connected.

8. The lidar photodetector adjustment device according to claim 7, characterized in that, The adjustment seat mechanism includes a first deflection seat fixed on the adjustment block. There are two first deflection seats. The first deflection seat is rotatably connected to the adjustment rod. The end of the adjustment rod away from the first deflection seat is rotatably connected to the second deflection seat. The second deflection seat is fixedly connected to the mounting base. The detector body is located in the mounting base.

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