Three-dimensional scanning type laser radar lens rotating structure

Abstract

The utility model discloses a three-dimensional scanning type laser radar lens rotating structure, comprising a rear support which comprises a bottom plate, a motor seat plate vertically fixed on the bottom plate, and a lens plate with two ends respectively fixedly connected with the bottom plate and the motor seat plate; the hollow servo motor is fixed on the motor base plate, and hollow holes are formed in the motor base plate and the hollow servo motor; the front bracket is connected with the output end of the motor and is provided with a reflecting lens II, an emergent lens and a heating film; the electricity taking assembly is composed of a connecting rod, a movable ring and a static ring, the static ring is fixed, and the movable ring and the static ring take electricity in a sliding mode and are connected with the heating film. According to the structure, the hollow servo motor is adopted, high-precision rotation control is achieved, position information can be fed back in real time, and the high-precision measurement requirement is met; the electricity-taking assembly solves the problem that a heating film electricity-taking wire is wound and broken, the reliability of equipment is improved, and the service life is prolonged. The heating film prevents the lens from fogging and icing, and the environmental adaptability is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of lidar technology, specifically a three-dimensional scanning lidar lens rotation structure. Background Technology

[0002] In today's era of rapid technological advancement, LiDAR, as an important sensor technology, is widely used in numerous fields such as autonomous driving, robot navigation, and surveying. Among these applications, the rotating structure of the 3D scanning LiDAR lens plays a crucial role in the performance of the LiDAR.

[0003] Currently, most traditional 3D scanning LiDAR lens rotation structures employ stepper motors and gear drives. This traditional approach has several drawbacks. Firstly, it struggles to meet the demands of modern high-precision measurement. As industries increasingly demand higher measurement accuracy, the limitations of traditional structures become more apparent, failing to provide reliable data support for applications with extremely high precision requirements, such as autonomous driving. Secondly, its position feedback capabilities are very limited, unable to provide real-time and accurate feedback on the position information of the rotating components. For LiDAR applications requiring precise angular data, accurate position feedback is crucial, and this deficiency undoubtedly represents a significant obstacle to the further development of LiDAR in related fields.

[0004] In addition, in traditional structures, the heating film is powered by wires. During the rotation of the lens, the wires will twist repeatedly, which can easily lead to the wires getting tangled and breaking, greatly reducing the service life of the equipment and increasing maintenance costs and usage risks.

[0005] To address the above technical issues, this application proposes a rotating structure for a three-dimensional scanning lidar lens. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a three-dimensional scanning lidar lens rotation structure.

[0007] The technical solution adopted in this utility model is: a three-dimensional scanning lidar lens rotation structure, comprising:

[0008] The rear support includes a base plate, a motor base plate vertically fixed on the base plate, and a lens plate whose two ends are respectively fixed to the base plate and the motor base plate.

[0009] A hollow servo motor is fixedly mounted on a motor base plate, and both the motor base plate and the hollow servo motor are provided with hollow holes.

[0010] A front bracket is connected to the output end of a hollow servo motor. A second reflective lens is provided on the front bracket located on one side of the hollow hole. An output lens is provided on the light-emitting hole below the second reflective lens. A heating film is provided on the second reflective lens and the output lens.

[0011] The power-gathering assembly includes a connecting rod, a moving ring, and a stationary ring. The stationary ring is fixed to the motor base plate. The moving ring and the stationary ring slide to draw power. One end of the connecting rod is connected to the output end of the hollow servo motor, and the other end is fixedly connected to the moving ring. The moving ring is electrically connected to the heating film through a wire.

[0012] Furthermore, there are multiple connecting rods arranged in a circumferential array within the hollow hole.

[0013] Furthermore, a reflective lens is mounted on the lens plate. The reflective lens is tilted and located at the intersection of the hollow hole and the light-entry hole on the base plate.

[0014] Furthermore, the moving ring is provided with two power-taking rings, and the stationary ring is provided with a contact located between the two power-taking rings.

[0015] Furthermore, it also includes an outer cover fixed to the rear support, which is rotatably engaged with the front support.

[0016] The beneficial effects of this utility model are:

[0017] 1. High-precision rotation control: This application employs a hollow servo motor, which offers higher rotational accuracy compared to traditional stepper motors with gear transmission. The hollow servo motor enables more precise angle control, providing the LiDAR with a more stable and accurate scanning angle, meeting high-precision measurement requirements. Simultaneously, it possesses a powerful position feedback function, providing real-time feedback on the position information of rotating components, allowing the LiDAR system to quickly adjust according to actual conditions. This significantly improves the system's responsiveness to environmental changes, offering significant advantages in scenarios with extremely high precision requirements, such as autonomous driving and industrial inspection.

[0018] 2. Improved Reliability of Power Supply for Heating Film: The power supply component of this application includes a design that integrates a connecting rod, a rotating ring, and a stationary ring. The stationary ring is fixed to the motor mount, and the rotating ring slides alongside the stationary ring for power supply. The rotating ring is electrically connected to the heating film via a wire. This power supply method allows the wire to rotate with the rotating ring, effectively solving the problem of wire breakage due to repeated twisting during power supply to the heating film in traditional structures. This significantly extends the lifespan of the equipment, reduces downtime and maintenance frequency caused by wire failures, lowers maintenance costs and operational risks, and ensures the stability and reliability of the lidar during long-term operation, providing strong support for its continuous operation in various complex environments.

[0019] 3. Enhanced Environmental Adaptability: The heating films on the reflecting and emitting lenses are prone to fogging and icing in harsh environments such as cold and humid conditions. This severely affects laser propagation and reflection, reducing the performance of the lidar. The heating films generate heat through electrical current, effectively preventing fogging and icing on the lens surfaces, ensuring the lenses maintain a clear optical state, and guaranteeing normal operation of the lidar in various harsh environments. This significantly improves the environmental adaptability and reliability of the equipment.

[0020] 4. Increase the light measurement distance: By increasing the size of the reflecting and exiting mirrors and combining them with a hollow servo motor solution, the maximum light measurement distance of the radar can be increased.

[0021] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of this utility model after the outer cover is removed.

[0024] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the moving ring and the stationary ring.

[0026] Figure 5 This is a structural schematic diagram of the moving ring and the stationary ring from another perspective.

[0027] Figure 1-5 Components: 1. Base plate; 2. Motor base plate; 3. Lens plate; 4. Hollow servo motor; 5. Hollow hole; 6. Front bracket; 7. Second reflector lens; 8. Light exit hole; 10. Emission lens; 11. Connecting rod; 12. Moving ring; 13. Stationary ring; 14. First reflector lens; 15. Power take-up ring; 16. Contact; 17. Outer cover; 19. Light inlet hole. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] This invention provides a rotating structure for a three-dimensional scanning lidar lens.

[0031] In this embodiment, refer to Figure 1-5 The rotating structure of the three-dimensional scanning lidar lens includes:

[0032] The rear support includes a base plate 1, a motor base plate 2 vertically fixed on the base plate 1, and a lens plate 3 whose two ends are respectively fixed to the base plate and the motor base plate.

[0033] Hollow servo motor 4 is fixedly mounted on a motor base plate, and both the motor base plate and the hollow servo motor are provided with hollow holes 5.

[0034] A front bracket 6 is connected to the output end of a hollow servo motor. A second reflective lens 7 is provided on the front bracket located on one side of the hollow hole. An output lens 10 is provided on the light-emitting hole 8 below the second reflective lens 7. A heating film is provided on the second reflective lens and the output lens 10.

[0035] The power-gathering assembly includes a connecting rod 11, a moving ring 12, and a stationary ring 13. The stationary ring is fixed on the motor base plate, and the moving ring and the stationary ring slide to draw power. One end of the connecting rod is connected to the output end of the hollow servo motor, and the other end is fixedly connected to the moving ring. The moving ring is electrically connected to the heating film through a wire.

[0036] The aforementioned technical solution employs a hollow servo motor, which offers higher rotational accuracy compared to traditional stepper motors and gear transmissions. The hollow servo motor enables more precise angle control, providing the LiDAR with a more stable and accurate scanning angle, meeting high-precision measurement requirements. Simultaneously, it possesses powerful position feedback capabilities, providing real-time feedback on the position information of rotating components, allowing the LiDAR system to quickly adjust according to actual conditions. This significantly enhances the system's responsiveness to environmental changes, offering substantial advantages in scenarios with extremely high precision requirements, such as autonomous driving and industrial inspection.

[0037] In addition, the heating film installed on the second and third lenses can generate heat by electricity, effectively preventing fogging and icing on the lens surface, ensuring that the lens always maintains a clear optical state, and ensuring that the lidar can work normally in various harsh environments, greatly improving the environmental adaptability and reliability of the equipment.

[0038] Secondly, the heating film draws power through a power-collecting component. The sliding power-collecting design of the moving and stationary rings of the power-collecting component solves the problem of wire entanglement and breakage when the heating film draws power, thus improving the reliability and service life of the equipment.

[0039] Specifically, there are multiple connecting rods arranged in a circumferential array within the hollow hole.

[0040] In this embodiment, multiple connecting rods are arranged in a circumferential array within the hollow hole, enhancing the stability of the connection between the moving ring and the output end of the hollow servo motor. During high-speed rotation of the motor, the evenly distributed connecting rods can better disperse torque, preventing structural deformation or loosening caused by uneven force.

[0041] Specifically, a reflective lens 14 is mounted on the lens plate. The reflective lens 14 is tilted and located at the intersection of the hollow hole and the light inlet hole 19 on the base plate.

[0042] In this embodiment, a reflective lens one, tilted and positioned on the lens plate, is located at the intersection of the hollow hole and the light-entry hole on the base plate, optimizing the optical path design of the lidar. It can accurately reflect the laser beam entering from the light-entry hole back to the hollow hole, guiding the laser smoothly into subsequent optical components, improving laser utilization, and enhancing the lidar's detection sensitivity and measurement accuracy.

[0043] Specifically, the moving ring is provided with two power-taking rings 15, and the stationary ring is provided with a contact 16 located between the two power-taking rings.

[0044] In this embodiment, the power-collecting ring on the moving ring slides into contact with the contact on the stationary ring. This specific power-collecting structure design makes the power-collecting process more stable and reliable. The close contact between the contact and the power-collecting ring effectively reduces contact resistance, reduces power loss, improves power-collecting efficiency, ensures a stable power supply for the heating film, and maintains the normal operating temperature of the second reflector and the exiting lens.

[0045] Specifically, it also includes an outer cover 17 fixed on the rear support, which is rotatably engaged with the front support.

[0046] In this embodiment, the outer cover fixed to the rear support rotates with the front bracket to provide protection for the internal precision optical and electrical components, preventing dust, moisture, and other contaminants from entering and extending the equipment's service life. Those skilled in the art should note that although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modifications using the concept of this utility model will be included within the scope of protection of this patent.

Claims

1. A three-dimensional scanning laser radar lens rotation structure, characterized in that include: The rear support includes a base plate, a motor base plate vertically fixed on the base plate, and a lens plate whose two ends are respectively fixed to the base plate and the motor base plate. A hollow servo motor is fixedly mounted on a motor base plate, and both the motor base plate and the hollow servo motor are provided with hollow holes. A front bracket is connected to the output end of a hollow servo motor. A second reflective lens is provided on the front bracket located on one side of the hollow hole. An output lens is provided on the light-emitting hole below the second reflective lens. A heating film is provided on the second reflective lens and the output lens. The power-gathering assembly includes a connecting rod, a moving ring, and a stationary ring. The stationary ring is fixed to the motor base plate. The moving ring and the stationary ring slide to draw power. One end of the connecting rod is connected to the output end of the hollow servo motor, and the other end is fixedly connected to the moving ring. The moving ring is electrically connected to the heating film through a wire.

2. The three-dimensional scanning laser radar lens rotating structure according to claim 1, characterized in that: The connecting rods are multiple, and the multiple connecting rods are arranged in a circumferential array inside the hollow hole.

3. The three-dimensional scanning laser radar lens rotating structure according to claim 1, characterized in that: A reflective lens is mounted on the lens plate. The reflective lens is tilted and located at the intersection of the hollow hole and the light-entry hole on the base plate.

4. The three-dimensional scanning laser radar lens rotating structure according to claim 1, characterized in that: The moving ring is provided with two power-taking rings, and the stationary ring is provided with a contact located between the two power-taking rings.

5. The three-dimensional scanning laser radar lens rotating structure according to claim 1, characterized in that: It also includes an outer cover fixed to the rear support, which is rotatably engaged with the front support.

Images