Lidar

Abstract

The utility model is suitable for radar technical field provides a kind of laser radar, above-mentioned laser radar includes shell, first laser assembly, rotary reflection mechanism and second laser assembly.Through drive unit drive rotating component rotates around first axis, reflection portion also rotates along with rotating component, first laser assembly can be cooperated with reflection portion and realize scanning to the four around of laser radar.In addition, second laser assembly rotates along with rotating component, and scanning to the four around of laser radar can also be realized.Another.Compared with prior art laser radar, two scanning signals can be comprehensively processed and analyzed by scanning the four around in different positions through first laser assembly and second laser assembly, and the purpose of scanning target object from two different angles at the same time can be realized, the description of the contour, shape and position of object is more accurate and detailed, and the scanning precision of laser radar is improved.

Description

Technical Field

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

[0002] LiDAR technology is a high-precision, high-reliability sensor technology. LiDAR works by emitting a laser beam towards a target and then processing the received laser signal reflected back from the target to obtain information about the target, such as its distance and shape, thereby detecting and identifying targets in the surrounding environment. Because of its ability to accurately measure target position, motion, and shape, LiDAR is widely used in autonomous driving, intelligent manufacturing, and security monitoring. However, most existing LiDAR systems suffer from poor scanning accuracy, severely impacting the user experience. Utility Model Content

[0003] The purpose of this invention is to provide a lidar that addresses the technical problem of poor scanning accuracy in most existing lidar systems.

[0004] This utility model is implemented as follows: a lidar includes:

[0005] The outer casing includes a base and a protective cover fastened to the base;

[0006] A first laser component is located inside the protective cover and disposed on the base. The first laser component is used to emit a first detection light and is also used to receive and process a first reflected light.

[0007] A rotary reflection mechanism includes a mounting base, a rotating assembly, and a drive unit. The mounting base is connected to the inner wall of the protective cover. The rotating assembly has a degree of freedom to rotate about a first axis relative to the mounting base. The drive unit is used to drive the rotating assembly to rotate. The rotating assembly has a reflective part for reflecting a first detection light and a first reflected light.

[0008] The second laser component is disposed on the rotating component and can rotate together with the rotating component. The second laser component is used to emit a second detection light and also to receive and process a second reflected light.

[0009] In one alternative embodiment, the second laser component is movably connected to the rotating component, and the rotating component is provided with a first adjustment mechanism for adjusting the position of the second laser component to change the angle between the first probe light and the first axis.

[0010] In an optional embodiment, the first adjustment mechanism includes an adjustment support and an adjustment knob. The adjustment knob is rotatably mounted on the rotating assembly, and the rotation axis of the adjustment knob is set at an angle to the first axis. The adjustment support is connected to the adjustment knob and can swing around the rotation axis of the adjustment knob under the action of the adjustment knob. The second laser assembly is connected to the adjustment support and can move together with the adjustment support.

[0011] In an optional embodiment, the adjusting support is provided with a receiving mounting hole, the adjusting knob passes through the receiving mounting hole, and the inner wall of the receiving mounting hole is provided with a toothed structure, the toothed structure being used for engagement adjustment between the adjusting knob and the adjusting support.

[0012] In an alternative embodiment, the rotating assembly includes a rotating bracket and a reflector, with a first end of the rotating bracket rotatably connected to the mounting base and a second end extending toward the first laser assembly, and the reflector disposed on the second end of the rotating bracket.

[0013] In an optional embodiment, the reflector is movably connected to the second end of the rotating bracket, the reflector has a degree of freedom to rotate about a second axis relative to the rotating bracket, the second axis intersects the first axis and is set at an angle to each other, and a second adjustment mechanism for adjusting the angle of the reflector is provided between the rotating bracket and the reflector.

[0014] In an optional embodiment, the second adjustment mechanism includes a pusher and an elastic element. The first end of the pusher is threadedly connected to the rotating bracket, and the second end of the pusher abuts against the reflector. The elastic element is disposed between the rotating bracket and the reflector and is used to push the reflector to rotate in the direction of pressing the second end of the pusher.

[0015] In an optional embodiment, the elastic element includes an elastic pin disposed on the rotating bracket, the elastic end of the elastic pin abutting against the reflector, and the elastic pin and the pusher are respectively located on opposite sides of the second axis.

[0016] In an optional embodiment, the rotary reflection mechanism further includes a wireless power supply component and a wireless communication component. The wireless power supply component includes a wireless power supply end and a power supply receiver end. The wireless power supply end is disposed on the mounting base, and the power supply receiver end is disposed on the rotating component and electrically connected to the second laser component. The wireless communication component includes a communication transmitter end and a communication receiver end. The communication receiver end is disposed on the mounting base, and the communication transmitter end is disposed on the rotating component and electrically connected to the second laser component.

[0017] In an optional embodiment, an angle detection component is provided between the mounting base and the rotating assembly. The angle detection component includes an encoder and an encoder disk. The encoder is fixedly mounted on the mounting base, and the encoder disk is fixedly mounted on the rotating assembly.

[0018] The technical advantages of this invention compared to existing technologies are as follows: A housing with an installation space is formed by a base and a protective cover. A first laser component is mounted on the base, which can emit a first detection light and receive and process a first reflected light. A rotary reflection mechanism is mounted on the protective cover, comprising a mounting base, a rotating component, and a drive unit. The mounting base is connected to the inner wall of the protective cover. The rotating component has a degree of freedom to rotate around a first axis relative to the mounting base. The drive unit drives the rotating component to rotate. The rotating component has a reflective part that reflects both the first detection light and the first reflected light. Furthermore, a second laser component is mounted on the rotating component, which can emit a second detection light and receive and process the second reflected light. When the lidar is operating, the drive unit can drive the rotating component to rotate around the first axis. The reflective part also rotates with the rotating component. The first laser component, in conjunction with the reflective part, can scan the lidar's perimeter. Additionally, the second laser component, also rotating with the rotating component, can also scan the lidar's perimeter. Compared to existing lidar technologies, this new method allows for scanning of the surrounding area from different positions using a first and second laser component, followed by comprehensive processing and analysis of the two scan signals. This enables simultaneous scanning of the target object from two different angles, resulting in a more accurate and detailed description of the object's outline, shape, and position, thus improving the precision of lidar scanning. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the lidar provided in this embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the rotary reflection mechanism used in this embodiment of the utility model;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along line AA;

[0023] Figure 4 This is a schematic diagram of the adjusting support and the second laser assembly used in this embodiment of the utility model;

[0024] Figure 5 This is a cross-sectional view of the second laser component used in this embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the rotating bracket used in the embodiment of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the reflector used in the embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Outer shell; 11. Base; 12. Protective cover; 121. Light-transmitting tube; 122. Light-shielding cover; 2. Rotary reflection mechanism; 21. Mounting base; 22. Rotating assembly; 221. Rotating bracket; 222. Reflector; 223. First hinge; 224. Second hinge; 225. Hinge shaft; 23. Drive unit; 24. Mounting groove; 25. Limiting structure; 26. Receiving groove; 27. First adjustment mechanism; 271. Adjustment support; 272. Adjustment knob; 273. Receiving mounting hole; 274. Tooth structure; 275. Arc-shaped guide groove ; 28. Second adjustment mechanism; 281. Pushing component; 282. Elastic top pin; 3. First laser assembly; 4. Second laser assembly; 41. Laser transceiver board; 42. Laser transmitter; 43. Laser receiver; 44. Transmitting collimating tube; 45. Transmitting lens; 46. Receiving collimating tube; 47. Receiving lens; 5. Wireless power supply assembly; 51. Wireless power supply terminal; 52. Power supply receiving terminal; 6. Wireless communication assembly; 61. Communication receiving terminal; 62. Communication transmitting terminal; 7. Angle detection assembly; 71. Encoder; 72. Encoder disk; 8. Light guide channel. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 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. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] Please refer to Figures 1 to 3 As shown in this embodiment of the present invention, a lidar is provided, comprising a housing 1, a first laser component 3, a rotary reflection mechanism 2, and a second laser component 4. The housing 1 includes a base 11 and a protective cover 12 fastened to the base 11. The first laser component 3 is located inside the protective cover 12 and disposed on the base 11. The first laser component 3 is used to emit a first detection light and also to receive and process the first reflected light. The rotary reflection mechanism 2 includes a mounting base 21, a rotating component 22, and a driving unit 23. The mounting base 21 is connected to the inner wall of the protective cover 12. The rotating component 22 has a degree of freedom to rotate about a first axis relative to the mounting base 21. The driving unit 23 is used to drive the rotating component 22 to rotate. The rotating component 22 has a reflective part for reflecting the first detection light and the first reflected light. The second laser component 4 is disposed on the rotating component 22 and can rotate together with the rotating component 22. The second laser component 4 is used to emit a second detection light and also to receive and process the second reflected light.

[0035] Specifically, the base 11 refers to a supporting component with a certain volume, and there can be installation space inside the base 11. The protective cover 12 refers to a shell-shaped component with a certain accommodating space. The opening of the protective cover 12 faces the base 11 and is fastened to the base 11. The protective cover 12 can be connected to the base 11 by means of snap-fit, adhesive, or fastener connection. The protective cover 12 and the base 11 form a shell 1, and the interior of the shell 1 has space for arranging the internal components of the lidar. In order to allow the laser to pass through the protective cover 12, there can be a light-transmitting area surrounding the protective cover 12. The protective cover 12 can be a one-piece molded structure, and some areas can be made into light-transmitting areas during the manufacturing process, while other parts are generally opaque areas. The protective cover 12 can also be composed of multiple parts connected by snap-fit, adhesive, or fastener connection. For example, the protective cover 12 can be composed of two parts: a light-transmitting tube 121 and a light-shielding cover 122.

[0036] Mounting base 21 refers to a component with a certain volume. Mounting base 21 can be plate-shaped, block-shaped, or disc-shaped. Mounting base 21 can be connected to the protective cover 12 by snap-fit, adhesive, or fasteners. When the protective cover 12 consists of a light-transmitting cylinder 121 and a light-shielding cover 122, mounting base 21 can be connected to the light-shielding cover 122. Mounting base 21 can also be integrally formed with the protective cover 12. Rotating component 22 refers to a component with a certain height. Rotating component 22 can be rotatably connected to mounting base 21 via a rotating shaft or other components, and the first axis is generally set vertically. Driving unit 23 refers to a component or assembly that can drive an object to rotate, where driving unit 23 can be a motor, etc.

[0037] Both the first laser component 3 and the second laser component 4 refer to components or parts that can emit detection lasers and receive and process reflected lasers. The first laser component 3 and the second laser component 4 typically include a transmitter, a receiver, and a processing unit. The processing unit is electrically connected to both the transmitter and the receiver. The processing unit can be a circuit board, and the transmitter and the receiver are directly mounted and fixed on the circuit board.

[0038] The lidar provided in this embodiment of the invention comprises a housing 1 with an installation space, consisting of a base 11 and a protective cover 12. A first laser component 3 is mounted on the base 11, which can emit a first detection light and receive and process a first reflected light. A rotary reflection mechanism 2 is mounted on the protective cover 12, comprising a mounting base 21, a rotating component 22, and a drive unit 23. The mounting base 21 is connected to the inner wall of the protective cover 12. The rotating component 22 has a degree of freedom to rotate around a first axis relative to the mounting base 21. The drive unit 23 drives the rotating component 22 to rotate. The rotating component 22 has a reflective part that reflects the first detection light and the first reflected light. Furthermore, a second laser component 4 is mounted on the rotating component 22, which can emit a second detection light and receive and process the second reflected light. When the lidar is operating, the drive unit 23 drives the rotating component 22 to rotate around the first axis, and the reflective part rotates along with the rotating component 22. The first laser component 3, in conjunction with the reflective part, can scan the perimeter of the lidar. Furthermore, the second laser component 4 rotates together with the rotating component 22, enabling scanning of the surrounding area of ​​the lidar. Compared to existing lidar technologies, this method allows for scanning of the surrounding area from different positions using the first laser component 3 and the second laser component 4, followed by comprehensive processing and analysis of the two scan signals. This enables simultaneous scanning of the target object from two different angles, resulting in a more accurate and detailed description of the object's outline, shape, and position, thereby improving the lidar's scanning accuracy.

[0039] It should be noted that during the operation of the lidar, the first laser component 3 and the second laser component 4 can be selected to work simultaneously, or only one of the first laser component 3 and the second laser component 4 can be selected for scanning, which can improve the functionality of the lidar.

[0040] In one embodiment, see Figure 3 The second laser component 4 is movably connected to the rotating component 22. The rotating component 22 is equipped with a first adjustment mechanism 27, which is used to adjust the position of the second laser component 4 to change the angle between the first detection light and the first axis. Specifically, the first adjustment mechanism 27 refers to a component or assembly that can adjust the position or angle of an object. In this embodiment, by providing the first adjustment mechanism 27 on the rotating component 22, the position of the second laser component 4 can be adjusted to change the angle between the first detection light and the first axis. This allows the scanning angle of the second laser component 4 to be adjusted during the rotation of the rotating component 22. Combined with the fixed scanning angle of the first laser component 3, this greatly enriches the usage modes of the lidar, making its use more flexible and convenient.

[0041] In an optional embodiment, please refer to Figure 3 and Figure 6 The rotating assembly 22 is provided with a mounting groove 24 for accommodating the second laser assembly 4, and the second laser assembly 4 is at least partially located within the mounting groove 24 after installation. This allows the second laser assembly 4 and the rotating assembly 22 to occupy less space after installation, saving space inside the protective cover 12 and making the internal structure of the lidar more compact.

[0042] In one embodiment, see Figure 1 , Figure 3 and Figure 4The first adjustment mechanism 27 includes an adjustment support 271 and an adjustment knob 272. The adjustment knob 272 is rotatably mounted on the rotating assembly 22, and the rotation axis of the adjustment knob 272 forms an angle with the first axis. The adjustment support 271 is connected to the adjustment knob 272 and can swing around the rotation axis of the adjustment knob 272 under the action of the adjustment knob 272. The second laser assembly 4 is connected to the adjustment support 271 and can move together with the adjustment support 271. Specifically, the adjustment support 271 refers to a component with a certain length, and the adjustment support 271 can be plate-shaped, column-shaped, or block-shaped. The adjustment support 271 can be connected to the second laser assembly 4 by means of snap-fit, adhesive, or fastener connection, for example, connected to the control circuit board of the second laser assembly 4. The adjustment knob 272 refers to a columnar component with a certain length. The rotating assembly 22 can be provided with an insertion hole for installing the adjustment knob 272, and the adjustment knob 272 is rotatably inserted into the insertion hole. The angle between the rotation axis of the adjustment knob 272 and the first axis is usually a right angle. For example, when the first axis is set vertically, the rotation axis of the adjustment knob 272 is set horizontally. Furthermore, the adjustment knob 272 can be fixedly connected to the adjustment support 271 by snap-fit, adhesive, or fastener connection. In this embodiment, the second laser component 4 is connected to the adjustment support 271, and the adjustment support 271 is simultaneously connected to the adjustment knob 272. The adjustment knob 272 is rotatably mounted on the rotation assembly 22, and its rotation axis forms an angle with the first axis. When the scanning angle of the second laser component 4 needs to be adjusted, rotating the adjustment knob 272 will cause the adjustment support 271 and the second laser component 4 to move together, ultimately achieving the purpose of adjusting the scanning angle of the second laser component 4, making angle adjustment more convenient.

[0043] It should be noted that the adjusting knob 272 and the rotating assembly 22 can also be equipped with a locking structure, such as a locking screw. When the adjusting knob 272 needs to be fixed, it can be fixed to the rotating assembly 22.

[0044] In an optional embodiment, please refer to Figure 6 The rotating assembly 22 is also provided with a limiting structure 25 for limiting the adjustment support 271. At least a portion of the adjustment support 271 is located within the limiting structure 25. Under the action of the limiting structure 25, the adjustment support 271 only has the degree of freedom to swing around the adjustment knob 272. Specifically, the limiting structure 25 can be a limiting groove. The adjustment support 271 is disposed inside the limiting groove. The side wall of the limiting groove can limit the adjustment support 271, so that the adjustment support 271 only has the degree of freedom to swing around the adjustment knob 272. This makes the movement of the adjustment support 271 more stable and the installation of the second laser assembly 4 more stable.

[0045] In one embodiment, see Figure 4 The adjusting support 271 is provided with a receiving mounting hole 273. An adjusting knob 272 passes through the receiving mounting hole 273. The inner wall of the receiving mounting hole 273 is provided with a toothed structure 274, which is used for the engagement and adjustment of the adjusting knob 272 with the adjusting support 271. Specifically, the receiving mounting hole 273 refers to a hole structure with a certain depth, which can penetrate the adjusting support 271. The toothed structure 274 is composed of multiple protruding structures arranged at intervals along a preset path. Similarly, a toothed structure 274 can also be provided on the outer periphery of the adjustment knob 272. When the adjustment knob 272 is inserted into the mounting hole, the toothed structure 274 can mesh with each other to adjust the adjustment knob 272 and the adjustment support 271. When the adjustment support 271 is not subjected to external force, it can remain fixed. When the second laser assembly 4 and the adjustment support 27 are subjected to external force, the toothed structure 274 on the outer periphery of the adjustment knob 272 and the toothed structure 274 on the inner wall of the mounting hole 273 can move back and forth to achieve the meshing adjustment of the adjustment knob 272 and the adjustment support 271, making the position adjustment of the adjustment support 271 more convenient.

[0046] Based on the aforementioned feature that accommodates mounting hole 273, please refer to Figure 4 An arc-shaped guide groove 275 is also provided on the adjusting support 271, and the arc-shaped guide groove 275 is concentrically arranged with the receiving mounting hole 273. A guide limiting part for sliding engagement with the arc-shaped guide groove 275 can also be provided on the rotating assembly 22. In this embodiment, by providing an arc-shaped guide groove 275 concentric with the receiving mounting hole 273 on the adjusting support 271, and by providing a guide limiting part for sliding engagement with the arc-shaped guide groove 275 on the rotating assembly 22, the guide limiting part can be located within the arc-shaped guide groove 275 after the adjusting support 271 is installed, and can slide along the length direction of the arc-shaped guide groove 275. Through the limiting engagement of the arc-shaped guide groove 275 and the guide limiting part, the movement of the adjusting support 271 is made more stable.

[0047] In an optional embodiment, please refer to Figures 3 to 5 The second laser assembly 4 includes a laser transceiver board 41, a laser transmitter 42, and a laser receiver 43. Both the laser transmitter 42 and the laser receiver 43 are mounted on the laser transceiver board 41 and are electrically connected to the circuitry on the laser transceiver board 41. A transmitting collimating tube 44 is also fitted around the laser transmitter 42, and a transmitting lens 45 is provided at the opening of the transmitting collimating tube 44. A receiving collimating tube 46 is also fitted around the laser receiver 43, and a receiving lens 47 is provided at the opening of the receiving collimating tube 46.

[0048] In one embodiment, see Figure 3 The rotating assembly 22 includes a rotating bracket 221 and a reflector 222. The first end of the rotating bracket 221 is rotatably connected to the mounting base 21, and the second end extends towards the first laser assembly 3. The reflector 222 is disposed on the second end of the rotating bracket 221. Specifically, the rotating bracket 221 refers to a component with a certain height, and can be columnar, block-shaped, or a combination of various shapes. The reflector 222 refers to a component that can reflect laser light. The reflector 222 can be a coated reflector 222 to improve its reflection effect. In this embodiment, by rotatably connecting the first end of the rotating bracket 221 to the mounting base 21, extending the second end towards the first laser assembly 3, and disposing the reflector 222 on the second end of the rotating bracket 221, the overall structure of the rotating assembly 22 is simplified, assembly is made more convenient, and the manufacturing cost of the equipment is reduced.

[0049] In an optional embodiment, please refer to Figure 3 The lidar also includes a light guide channel, which consists of an upper guide tube and a lower guide tube. The inclined surface in the middle of the light guide channel is tightly fitted to the reflector 222. The lower guide tube is aligned with the optical path of the first detection light emitted by the first laser component 3 on the base 11. There is a very small gap between the end of the upper guide tube and the inner wall of the protective cover 12. The light guide channel prevents the laser light from escaping to other parts of the lidar and prevents the laser from interfering with the operation of other components.

[0050] In one embodiment, see Figure 3The reflector 222 is movably connected to the second end of the rotating support 221. The reflector 222 has a degree of freedom to rotate about a second axis relative to the rotating support 221. The second axis intersects the first axis and is set at an angle to each other. A second adjustment mechanism 28 for adjusting the angle of the reflector 222 is provided between the rotating support 221 and the reflector 222. Specifically, the reflecting surface of the reflector 222 faces the first laser assembly 3, and the back of the reflector 222 can be hinged to the second end of the rotating support 221 via a hinge shaft 225, thereby giving the reflector 222 a degree of freedom to rotate about the second axis relative to the rotating support 221. The angle between the second axis and the first axis is generally a right angle; for example, when the first axis is vertical, the second axis can be set horizontally. The second adjustment mechanism 28 refers to a component or assembly that can adjust the position of an object. In this embodiment, the reflector 222 is movably connected to the second end of the rotating bracket 221, and the reflector 222 has a degree of freedom to rotate about a second axis relative to the rotating bracket 221. A second adjustment mechanism 28 is provided between the rotating bracket 221 and the reflector 222. When the scanning angle of the first laser component 3 needs to be adjusted, the angle of the reflector 222 can be adjusted through the second adjustment mechanism 28, allowing the scanning angle of the first laser component 3 to be freely adjusted according to actual needs, making the lidar more convenient to use.

[0051] It should be noted that the first probe light emitted by the first laser component 3 is positioned along the first axis at the leading edge of contact with the reflector 222. The first probe light intersects with the second axis, and after the angle of the reflector 222 changes, only the angle between the reflected first probe light and the horizontal plane needs to be adjusted.

[0052] In an optional embodiment, please refer to Figure 6 and Figure 7 A first hinge 223 is provided on the back of the reflector 222, and a second hinge 224 is provided at the second end of the rotating bracket 221. A hinge shaft 225 passes through both the first hinge 223 and the second hinge 224 to achieve a movable connection between the reflector 222 and the rotating bracket 221. Furthermore, there can be two second hinges 224, spaced apart. During installation, the first hinge 223 can be inserted between the two second hinges 224, and the hinge shaft 225 passes through both the first hinge 223 and the two second hinges 224 simultaneously. This makes the connection between the reflector 222 and the rotating bracket 221 more stable and improves the safety of the equipment.

[0053] In one embodiment, see Figure 6The second adjusting mechanism 28 includes a pusher 281 and an elastic element. The first end of the pusher 281 is threadedly connected to the rotating bracket 221, and the second end of the pusher 281 abuts against the reflector 222. The elastic element is disposed between the rotating bracket 221 and the reflector 222, and is used to push the reflector 222 to rotate in the direction that presses against the second end of the pusher 281. Specifically, the pusher 281 refers to a component of a certain length, with threads on its outer periphery. A threaded hole may also be provided on the rotating bracket 221 to achieve the threaded connection between the first end of the pusher 281 and the rotating bracket 221. The elastic element refers to a component or assembly with a certain elasticity, such as a spring, torsion spring, or elastic pin 282. In this embodiment, by threading the first end of the pusher 281 to the rotating bracket 221 and the second end of the pusher 281 abutting against the reflector 222, when the angle of the reflector 222 needs to be adjusted, the pusher 281 can be rotated to move along its own axis, thereby pushing the reflector 222 to rotate around the second axis, thus achieving the adjustment of the angle of the reflector 222. Furthermore, an elastic element is provided between the rotating bracket 221 and the reflector 222. By pushing the reflector 222 towards the direction pressing the second end of the pusher 281, the position of the reflector 222 can always remain stable, improving the stability of the reflector 222 during use.

[0054] In one embodiment, see Figure 6 The elastic element includes an elastic pin 282, which is mounted on the rotating bracket 221. The elastic end of the elastic pin 282 abuts against the reflector 222, and the elastic pin 282 and the pusher 281 are located on opposite sides of the second axis. Specifically, the elastic pin 282 is a columnar component with a length that can extend and retract and is elastic. When installing the elastic pin 282, a pin hole can be provided on the rotating bracket 221, and the elastic pin 282 can be inserted into the pin hole. In this embodiment, by mounting the elastic pin 282 on the rotating bracket 221, with its elastic end abutting against the reflector 222, and with the elastic pin 282 and the pusher 281 located on opposite sides of the second axis, a pushing force can be applied to the reflector 222 to press against the second end of the pusher 281. The use of the elastic pin 282 in the elastic element extends its service life while ensuring sufficient elasticity.

[0055] In an optional embodiment, please refer to Figure 6 The number of elastic top pins 282 can be two, and the two elastic top pins 282 are symmetrically arranged with the symmetrical mid-plane of the rotating bracket 221 as the reference plane. By arranging the two elastic top pins 282 in this way, the thrust on the reflector 222 can be more uniform, thus improving the balance of the reflector 222.

[0056] In one embodiment, see Figure 1 The rotary reflection mechanism 2 also includes a wireless power supply component 5 and a wireless communication component 6. The wireless power supply component 5 includes a wireless power supply terminal 51 and a power supply receiver 52. The wireless power supply terminal 51 is mounted on the mounting base 21, and the power supply receiver 52 is mounted on the rotating assembly 22 and electrically connected to the second laser component 4. The wireless communication component 6 includes a communication transmitter 62 and a communication receiver 61. The communication receiver 61 is mounted on the mounting base 21, and the communication transmitter 62 is mounted on the rotating assembly 22 and electrically connected to the second laser component 4. Specifically, the wireless power supply component 5 refers to a component that can transmit electrical energy over long distances without contact, wherein the wireless power supply terminal 51 and the power supply receiver 52 can transmit electrical energy without contact through the principle of electromagnetic induction. The wireless communication component 6 refers to a component that can transmit signals in space using electromagnetic waves. In this embodiment, the wireless power supply terminal 51 is mounted on the mounting base 21 and connected to an external power supply unit, and the power supply receiver 52 is mounted on the rotating assembly 22 and electrically connected to the second laser component 4. Meanwhile, the communication receiver 61 is mounted on the mounting base 21 and connected to the controller, and the communication transmitter 62 is mounted on the rotating assembly 22 and electrically connected to the second laser assembly 4. This ensures that the second laser assembly 4 is provided with power and signals without affecting the rotation of the rotating assembly 22.

[0057] It should be noted that a receiving groove 26 is also provided at the first end of the rotating bracket 221. Both the wireless power supply component 5 and the wireless communication component 6 are set in the receiving groove 26. While protecting the wireless power supply component 5 and the wireless communication component 6, the installation of the wireless power supply component 5 and the wireless communication component 6 is more space-saving.

[0058] In one embodiment, see Figure 3 An angle detection component 7 is provided between the mounting base 21 and the rotating assembly 22. The angle detection component 7 includes an encoder 71 and an encoder disk 72. The encoder 71 is fixedly mounted on the mounting base 21, and the encoder disk 72 is fixedly mounted on the rotating assembly 22. In this embodiment, by providing an encoder 71 on the mounting base 21 and an encoder disk 72 on the rotating assembly 22 near the mounting base 21, the encoder disk 72 can rotate together with the rotating assembly 22. The optical signal sensor on the encoder 71 can monitor the relative position of the encoder disk 72. The encoder 71 processes the position signal and transmits it to the control unit inside the base 11. The control unit calculates the relative position of the encoder disk 72, thereby making the rotation position detection of the rotating assembly 22 more accurate and convenient.

[0059] In an optional embodiment, please refer to Figure 1The lidar also includes a conduction component, which comprises a conduction circuit board and a conduction cable. The conduction circuit board can be electrically connected to the control circuit board inside the base 11, for example, via a cable. One end of the conduction cable can be connected to the conduction circuit board via a connector, and the other end of the conduction cable can be connected to the drive unit 23 and the encoder 71. The encoder 71 is then connected to the wireless power supply terminal 51 and the communication receiver terminal 61 via a cable. External power is supplied to the conduction circuit board via the control circuit board on the base 11, and the conduction circuit board transmits the power to the wireless power supply terminal 51 via the conduction cable. The second laser component 4 can emit a second detection light. The second detection light shines on the guard object after passing through the light-transmitting area, and is received by the second laser component 4 after being reflected by the surrounding objects. The second laser component 4 processes the received second reflected light and converts it into an electrical pulse signal. The electrical pulse signal can be transmitted from the laser transceiver board 41 to the communication transmitter 62 through the cable, and then transmitted to the communication receiver 61. Finally, it is transmitted to the control circuit board on the base 11 through the conductive ribbon cable and the conductive circuit board, making the signal and power transmission more convenient.

[0060] It should be noted that during the rotation of the rotating assembly 22, the laser emitted by the first laser assembly 3 and / or the second laser assembly 4 may be blocked by the conductive assembly. In this case, by changing the position of the conductive cable on the conductive circuit board, the laser can scan the blocked position between the changes in the conductive component's position. In specific implementation, it is only necessary to disable the blocked position in the radar's built-in program so that the radar scan can function normally, which helps improve the ease of use of the lidar.

[0061] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A lidar, characterized in that, include: The outer casing includes a base and a protective cover fastened to the base; A first laser component is located inside the protective cover and disposed on the base. The first laser component is used to emit a first detection light and is also used to receive and process a first reflected light. A rotary reflection mechanism includes a mounting base, a rotating assembly, and a drive unit. The mounting base is connected to the inner wall of the protective cover. The rotating assembly has a degree of freedom to rotate about a first axis relative to the mounting base. The drive unit is used to drive the rotating assembly to rotate. The rotating assembly has a reflective part for reflecting a first detection light and a first reflected light. The second laser component is disposed on the rotating component and can rotate together with the rotating component. The second laser component is used to emit a second detection light and also to receive and process a second reflected light.

2. The lidar as described in claim 1, characterized in that, The second laser component is movably connected to the rotating component, and the rotating component is provided with a first adjustment mechanism. The first adjustment mechanism is used to adjust the position of the second laser component to change the angle between the first probe light and the first axis.

3. The lidar as described in claim 2, characterized in that, The first adjustment mechanism includes an adjustment support and an adjustment knob. The adjustment knob is rotatably mounted on the rotating assembly, and the rotation axis of the adjustment knob is set at an angle to the first axis. The adjustment support is connected to the adjustment knob and can swing around the rotation axis of the adjustment knob under the action of the adjustment knob. The second laser assembly is connected to the adjustment support and can move together with the adjustment support.

4. The lidar as described in claim 3, characterized in that, The adjusting support is provided with a receiving mounting hole, and the adjusting knob passes through the receiving mounting hole. The inner wall of the receiving mounting hole is provided with a toothed structure, which is used for the engagement and adjustment of the adjusting knob with the adjusting support.

5. The lidar as described in claim 1, characterized in that, The rotating assembly includes a rotating bracket and a reflector. The first end of the rotating bracket is rotatably connected to the mounting base, and the second end extends toward the first laser assembly. The reflector is disposed on the second end of the rotating bracket.

6. The lidar as described in claim 5, characterized in that, The reflector is movably connected to the second end of the rotating bracket. The reflector has a degree of freedom to rotate about a second axis relative to the rotating bracket. The second axis intersects the first axis and is set at an angle to each other. A second adjustment mechanism for adjusting the angle of the reflector is provided between the rotating bracket and the reflector.

7. The lidar as described in claim 6, characterized in that, The second adjustment mechanism includes a pusher and an elastic element. The first end of the pusher is threadedly connected to the rotating bracket, and the second end of the pusher abuts against the reflector. The elastic element is disposed between the rotating bracket and the reflector and is used to push the reflector to rotate in the direction of pressing the second end of the pusher.

8. The lidar as described in claim 7, characterized in that, The elastic element includes an elastic pin, which is disposed on the rotating bracket. The elastic end of the elastic pin abuts against the reflector, and the elastic pin and the pusher are respectively located on both sides of the second axis.

9. The lidar as described in any one of claims 1 to 8, characterized in that, The rotary reflection mechanism further includes a wireless power supply component and a wireless communication component. The wireless power supply component includes a wireless power supply end and a power supply receiver end. The wireless power supply end is disposed on the mounting base, and the power supply receiver end is disposed on the rotating component and electrically connected to the second laser component. The wireless communication component includes a communication transmitter end and a communication receiver end. The communication receiver end is disposed on the mounting base, and the communication transmitter end is disposed on the rotating component and electrically connected to the second laser component.

10. The lidar as described in claim 8, characterized in that, An angle detection component is provided between the mounting base and the rotating component. The angle detection component includes an encoder and an encoder disk. The encoder is fixedly mounted on the mounting base, and the encoder disk is fixedly mounted on the rotating component.

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