Millimeter wave turntable for laser radar detection and laser detection shielding box

Abstract

The application relates to the technical field of laser radar detection, in particular to a millimeter wave turntable for laser radar detection and a laser detection shielding box, which comprises a base, one end of the surface of the base is provided with a double-shaft movement mechanism, the surface of the double-shaft movement mechanism is fixedly provided with a pitching mechanism; the surface of the pitching mechanism is provided with a connected rotating mechanism, both ends of the connected rotating mechanism are provided with millimeter wave mechanisms; one end of the surface of the base is provided with a receiving mechanism. The application improves the automation degree of the laser radar during detection, does not need manual auxiliary operation during the detection process, reduces the labor intensity, can simultaneously detect two products, improves the work efficiency during laser radar detection, and further has the functions of multi-shaft movement of the same machine and finding a reference during use through the setting of a gyroscope, a DD motor and laser transmission, so that the accuracy during detection is improved.

Description

Technical Field

[0001] This invention relates to the field of lidar detection technology, specifically to a millimeter-wave turntable and a lidar detection shielding box for lidar detection. Background Technology

[0002] A lidar (Light Detection and Ranging) system is a radar system that uses laser beams to detect the position, velocity, and other characteristics of a target. In terms of working principle, it is not fundamentally different from microwave radar: it emits a detection signal (laser beam) towards the target, then compares the received signal reflected back from the target (target echo) with the emitted signal, and after appropriate processing, obtains relevant information about the target. Lidar requires signal strength detection during detection; the detection range is generally ±15° for elevation and ±80° for yaw.

[0003] Currently, existing LiDAR inspections are all manually operated, with a low degree of automation in the inspection process. This increases the labor intensity of LiDAR inspections and makes it impossible to simultaneously inspect two products, thus reducing work efficiency. In addition, existing LiDARs cannot achieve multi-axis motion functions on the same machine during inspection, and they cannot perform benchmark finding functions during use, thereby reducing the accuracy of inspections. Summary of the Invention

[0004] The purpose of this invention is to provide a millimeter-wave turntable and a laser detection shielding box for lidar detection, so as to solve the problems mentioned in the background art, such as low working efficiency, inability to realize multi-axis movement of the same machine, and inability to realize the reference finding function.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a millimeter-wave turntable and a laser detection shielding box for lidar detection, comprising a base, a dual-axis motion mechanism mounted on one end of the surface of the base, a pitch mechanism fixed on the surface of the dual-axis motion mechanism; an integrated rotation mechanism provided on the surface of the pitch mechanism, millimeter-wave mechanisms mounted on both ends of the integrated rotation mechanism, and a lidar product to be tested mounted on the surface of the millimeter-wave mechanism; a receiving mechanism mounted on one end of the surface of the base, the receiving mechanism being used for detecting the pitch state of the lidar product to be tested;

[0006] During testing, the lidar product under test is mounted on the surface of the millimeter-wave mechanism. The dual-axis motion mechanism drives the lidar product under test to slide and rotate. The pitch mechanism drives the lidar product under test to adjust its pitch state. After adjustment, it cooperates with the receiving mechanism to perform the testing. After testing one side, the millimeter-wave mechanism drives the lidar product under test to flip and test the other side.

[0007] Preferably, the receiving mechanism includes a simulator bracket and a receiving module, the simulator bracket is fixed to the surface of the base, and the receiving module is installed on one side of the top of the simulator bracket.

[0008] Preferably, the dual-axis motion mechanism consists of a linear module, a slide table, and a bottom servo motor, with the linear module fixed to the surface of the base.

[0009] Preferably, the sliding end of the linear module is equipped with a slide table, and a bottom servo motor is mounted on the surface of the slide table.

[0010] Preferably, the pitch mechanism is composed of a rotating frame, a top servo motor, and a pitch frame, with the rotating frame fixed to the output end of the bottom servo motor.

[0011] Preferably, a pitching frame is hinged to the surface of the rotating frame, and a top servo motor is installed at one end of the surface of the rotating frame, with the output end of the top servo motor passing through the rotating frame and fixedly connected to the surface of the pitching frame.

[0012] Preferably, the integrated rotation mechanism includes a tilting servo motor, a support plate, a DD motor, and a mounting plate, wherein the tilting servo motor is fixedly connected to the surface of the pitching frame.

[0013] Preferably, the support plate is rotatably connected to the surface of the pitch frame, and one end of the support plate is fixedly connected to the output end of the tilt servo motor; a DD motor is fixed to the surface of the support plate, and mounting plates are installed on both output ends of the DD motor; a gyroscope is fixed to the surface of the mounting plates.

[0014] Preferably, the millimeter-wave mechanism is composed of a pad module, a product gripper module, and a product mating module. The pad module is installed on the surface of the mounting plate, the product mating module is installed inside the pad module, and the product gripper module is fixed on the surface of the pad module. The product gripper module and the product mating module are used for quick mating of the lidar product under test.

[0015] The present invention also provides a laser detection shielding box for lidar detection, including a shielding box body.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: When implementing the millimeter-wave turntable and laser detection shielding box for lidar testing, the lidar product under test is mounted on the surface of the millimeter-wave mechanism. A dual-axis motion mechanism drives the lidar product to slide and rotate. A pitch mechanism adjusts the pitch of the lidar product. After adjustment, it cooperates with the receiving mechanism to perform the testing. After testing one side, the millimeter-wave mechanism flips the lidar product to test the other side. This invention improves the automation level of lidar testing, eliminating the need for manual operation and reducing labor intensity. It also allows for simultaneous testing of two products, improving efficiency. Furthermore, by incorporating a gyroscope, DD motor, and laser beam, this invention achieves multi-axis motion functionality on the same machine and enables reference finding during use, thereby increasing testing accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional left-view structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the three-dimensional right-view structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the separated state structure of the present invention;

[0020] Figure 4 This is a partially enlarged structural schematic diagram of the present invention;

[0021] Figure 5 This is a schematic diagram of a partial explosion structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the oblique explosion structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the integrated rotating mechanism of the present invention;

[0024] Figure 8 This is a schematic diagram of the millimeter-wave mechanism structure of the present invention;

[0025] Figure 9 This is a three-dimensional structural diagram of the shielding box of the present invention;

[0026] Figure 10 This is a cross-sectional structural diagram of the shielding box of the present invention.

[0027] In the diagram: 1. Base; 2. Receiving mechanism; 21. Simulator bracket; 22. Receiving module; 3. Dual-axis motion mechanism; 31. Linear module; 32. Slide table; 33. Bottom servo motor; 4. Pitch mechanism; 41. Rotating frame; 42. Top servo motor; 43. Pitch frame; 5. Integrated rotation mechanism; 51. Tilting servo motor; 52. Support plate; 53. DD motor; 54. Mounting plate; 55. Gyroscope; 6. Millimeter wave mechanism; 61. Pad module; 62. Product gripper module; 63. Product mating module; 7. LiDAR product under test; 8. Shielding enclosure. 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, not all embodiments. In addition, the terms "first," "second," "third," "upper," "lower," "left," "right," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. 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] The present invention provides a structure for a millimeter-wave turntable and a laser detection shielding box for lidar detection, as shown below. Figure 1 as well as Figure 5 As shown, the device includes a base 1, and a dual-axis motion mechanism 3 is installed at one end of the surface of the base 1. The dual-axis motion mechanism 3 is composed of a linear module 31, a slide table 32 and a bottom servo motor 33. The linear module 31 is fixed to the surface of the base 1, and the slide table 32 is installed at the sliding end of the linear module 31. The bottom servo motor 33 is installed on the surface of the slide table 32.

[0030] Specifically, the surface of the slide table 32 is provided with three sets of photoelectric switches. The three sets of photoelectric switches are respectively set in the horizontal 0° and ±80° directions to realize the horizontal swing ±80° movement of the lidar product 7 under test. The surface of the rotating frame 41 is provided with a sensing plate that works in conjunction with the photoelectric switches.

[0031] During implementation, the linear module 31 drives the slide table 32 to move to a suitable distance, and the bottom servo motor 33 drives the rotating frame 41 to rotate, realizing movement in the horizontal angle ±80° direction.

[0032] Furthermore, such as Figure 4as well as Figure 5 As shown, a pitch mechanism 4 is fixed to the surface of the dual-axis motion mechanism 3. The pitch mechanism 4 is composed of a rotating frame 41, a top servo motor 42, and a pitch frame 43. The rotating frame 41 is fixed to the output end of the bottom servo motor 33. The pitch frame 43 is hinged to the surface of the rotating frame 41. The top servo motor 42 is installed at one end of the surface of the rotating frame 41, and the output end of the top servo motor 42 passes through the rotating frame 41 and is fixed to the surface of the pitch frame 43.

[0033] Specifically, the surface of the pitch mount 43 is provided with a sensor plate, and one side of the surface of the rotating mount 41 is provided with three sets of photoelectric switches that cooperate with the sensor plate. The three sets of photoelectric switches are respectively set in the horizontal 0° and ±15° directions to realize the pitch 15° movement of the lidar product 7 under test.

[0034] Specifically, three sets of photoelectric switches are also provided on one side of the surface of the pitch mount 43. The three sets of photoelectric switches are respectively set in the horizontal 0° and ±45° directions. The horizontal 0° direction is used for detection, while the ±45° direction is used for loading the two lidar products 7 under test. The surface of the support plate 52 is provided with a sensing sheet that works in conjunction with the photoelectric switches.

[0035] During implementation, the top servo motor 42 drives the pitching frame 43 to perform pitching motion, and the receiving module 22 detects the signal strength of the LiDAR product 7 under test by pitching 15°.

[0036] Furthermore, such as Figure 6 as well as Figure 7 As shown, the surface of the pitch mechanism 4 is provided with an integrated rotation mechanism 5. The integrated rotation mechanism 5 includes a flip servo motor 51, a support plate 52, a DD motor 53, and a mounting plate 54. The flip servo motor 51 is fixedly connected to the surface of the pitch frame 43, and the support plate 52 is rotatably connected to the surface of the pitch frame 43. One end of the support plate 52 is fixedly connected to the output end of the flip servo motor 51. The DD motor 53 is fixedly mounted on the surface of the support plate 52. The two output ends of the DD motor 53 are both mounted with mounting plates 54. The surface of the mounting plate 54 is fixed with a gyroscope 55.

[0037] During implementation, the reference of the lidar product 7 under test is positioned by the gyroscope 55 and the laser beam, and then the reference is adjusted by the DD motor 53 and the flip servo motor 51 to make the reference level.

[0038] Furthermore, such as Figure 3 as well as Figure 8As shown, millimeter-wave mechanisms 6 are installed at both ends of the integrated rotating mechanism 5, and the laser radar product 7 under test is installed on the surface of the millimeter-wave mechanism 6. The millimeter-wave mechanism 6 is composed of a pad module 61, a product gripper module 62, and a product mating module 63. The pad module 61 is installed on the surface of the mounting plate 54, and the product mating module 63 is installed inside the pad module 61. The product gripper module 62 is fixed on the surface of the pad module 61. The product gripper module 62 and the product mating module 63 are used for quick mating of the laser radar product 7 under test.

[0039] During implementation, the lidar product 7 to be tested is placed on the surface of the pad module 61. After placement, if the interface of the lidar product 7 to be tested is facing down, it is connected to the lidar product 7 to be tested through the product mating module 63. Alternatively, if the interface of the lidar product 7 to be tested is facing to the side, it is connected to the lidar product 7 through the product clamping module 62.

[0040] Furthermore, such as Figure 2 as well as Figure 5 As shown, a receiving mechanism 2 is installed at one end of the surface of the base 1. The receiving mechanism 2 is used for detecting the pitch state of the lidar product 7 under test. The receiving mechanism 2 includes a simulator bracket 21 and a receiving module 22. The simulator bracket 21 is fixed to the surface of the base 1, and the receiving module 22 is installed on one side of the top of the simulator bracket 21. Laser heads are installed on the surface of the simulator bracket 21, directly below the receiving module 22, and on the surface of the mounting plate 54. The laser head is used for finding the reference point of the lidar product 7 under test. When the laser is pointed at the reference point, it indicates that the lidar product 7 under test has found the reference point.

[0041] During implementation, the signal strength of the LiDAR product 7 under test is detected by the receiving module 22 on the top of the simulator bracket 21 at an elevation of 15° and a horizontal angle of ±80°.

[0042] Furthermore, such as Figure 9 as well as Figure 10 As shown, the present invention also provides a laser detection shielding box for lidar detection, including a shielding box body 8.

[0043] Working principle: In use, the lidar product 7 to be tested is first placed on the surface of the pad module 61. After placement, if the interface of the lidar product 7 to be tested is facing down, it is connected to the lidar product 7 through the product mating module 63. If the interface of the lidar product 7 to be tested is facing to the side, it is connected through the product gripper module 62. Then, the reference of the lidar product 7 to be tested is positioned by the gyroscope 55 and the laser beam. Then, the reference is adjusted by the DD motor 53 and the flip servo motor 51 to make the reference horizontal, that is, the two laser heads can be successfully aligned.

[0044] Subsequently, the linear module 31 drives the slide 32 to move to a suitable distance, and the bottom servo motor 33 drives the rotating frame 41 to rotate, realizing horizontal angular movement. During the movement, the receiving module 22 detects the signal strength of the LiDAR product 7 under test in the horizontal direction. At the same time, the top servo motor 42 drives the pitch frame 43 to perform pitch movement, and the receiving module 22 detects the pitch direction of the signal strength of the LiDAR product 7 under test.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A millimeter-wave turntable for lidar detection, comprising a base (1), characterized in that: A dual-axis motion mechanism (3) is installed at one end of the surface of the base (1), and a pitch mechanism (4) is fixed on the surface of the dual-axis motion mechanism (3); a combined rotation mechanism (5) is provided on the surface of the pitch mechanism (4), and millimeter-wave mechanisms (6) are installed at both ends of the combined rotation mechanism (5), and the laser radar product (7) under test is installed on the surface of the millimeter-wave mechanism (6); a receiving mechanism (2) is installed at one end of the surface of the base (1), and the receiving mechanism (2) is used for detection of the pitch state of the laser radar product (7) under test; The integrated rotating mechanism (5) includes a tilting servo motor (51), a support plate (52), a DD motor (53), and a mounting plate (54). The tilting servo motor (51) is fixedly connected to the surface of the pitch frame (43). The support plate (52) is rotatably connected to the surface of the pitch frame (43), and one end of the support plate (52) is fixedly connected to the output end of the tilting servo motor (51). The DD motor (53) is fixedly mounted on the surface of the support plate (52), and mounting plates (54) are installed on both output ends of the DD motor (53). A gyroscope (55) is fixed on the surface of the mounting plate (54); the millimeter-wave mechanism (6) is composed of a pad module (61), a product gripper module (62) and a product mating module (63). The pad module (61) is installed on the surface of the mounting plate (54). The product mating module (63) is installed inside the pad module (61). The product gripper module (62) is fixed on the surface of the pad module (61). The product gripper module (62) and the product mating module (63) are used for quick insertion of the laser radar product (7) under test. During testing, the lidar product under test (7) is mounted on the surface of the millimeter-wave mechanism (6). The dual-axis motion mechanism (3) drives the lidar product under test (7) to slide and rotate. The pitch mechanism (4) drives the lidar product under test (7) to adjust its pitch state. After adjustment, it cooperates with the receiving mechanism (2) to perform the testing. After testing one side, the millimeter-wave mechanism (6) drives the lidar product under test (7) to flip and perform testing on the other side.

2. The millimeter-wave turntable for lidar detection according to claim 1, characterized in that: The receiving mechanism (2) includes a simulator bracket (21) and a receiving module (22). The simulator bracket (21) is fixed to the surface of the base (1), and the receiving module (22) is installed on one side of the top of the simulator bracket (21).

3. The millimeter-wave turntable for lidar detection according to claim 1, characterized in that: The dual-axis motion mechanism (3) is composed of a linear module (31), a slide (32) and a bottom servo motor (33), and the linear module (31) is fixed to the surface of the base (1).

4. A millimeter-wave turntable for lidar detection according to claim 3, characterized in that: The sliding end of the linear module (31) is equipped with a slide table (32), and a bottom servo motor (33) is installed on the surface of the slide table (32).

5. A millimeter-wave turntable for lidar detection according to claim 1, characterized in that: The pitch mechanism (4) is composed of a rotating frame (41), a top servo motor (42) and a pitch frame (43), with the rotating frame (41) fixed to the output end of the bottom servo motor (33).

6. A millimeter-wave turntable for lidar detection according to claim 5, characterized in that: The surface of the rotating frame (41) is hinged to a pitching frame (43). A top servo motor (42) is installed at one end of the surface of the rotating frame (41), and the output end of the top servo motor (42) passes through the rotating frame (41) and is fixedly connected to the surface of the pitching frame (43).

7. A laser detection shielding box for lidar detection, comprising a shielding box body (8), characterized in that: The shielding enclosure (8) includes a millimeter-wave turntable for lidar detection as described in any one of claims 1 to 6.

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