A vehicle-mounted laser radar anti-interference testing device

Abstract

The utility model relates to vehicle-mounted laser radar anti-interference test technical field especially relates to a vehicle-mounted laser radar anti-interference testing device.The utility model provides a vehicle-mounted laser radar anti-interference testing device, including support frame, fixed plate, radar, motor and big gear, support frame top fixedly connected with fixed plate, and the radar is placed in fixed plate top, and the motor is installed in support frame right part, and the output shaft of motor is provided with pinion, and support frame lower part rotatoryly provided with big gear.Through driving interference equipment to do the circular motion around radar, and make it on the motion path constantly experience the vibration, impact and displacement change brought by the bump of protruding block, thereby make interference equipment produce high dynamic, close to the compound interference of real scene, in this kind of dynamic compound interference field that simulates real vehicle-mounted environment, the device can more comprehensive, more reliably test and evaluate the anti-interference ability of radar.

Description

Technical Field

[0001] This utility model relates to the field of anti-interference testing technology for vehicle-mounted lidar, and in particular to an anti-interference testing device for vehicle-mounted lidar. Background Technology

[0002] With the rapid development of autonomous driving technology, vehicle-mounted LiDAR, as a core sensor for environmental perception, directly impacts driving safety due to its anti-interference capabilities. In real-world road scenarios, LiDAR not only faces static environmental interference but also needs to cope with the coupling effect of time-varying signal interference and physical disturbances generated by dynamic interference sources (such as LiDAR signals from nearby vehicles) under complex relative motion and mechanical vibration environments. This composite interference can lead to safety issues such as point cloud distortion, missed target detection, or misidentification.

[0003] Therefore, during the automobile production process, it is necessary to conduct anti-interference tests on vehicle-mounted LiDAR to ensure vehicle safety. However, most existing testing equipment for LiDAR anti-interference capabilities can only realize static or simple uniform relative motion between the interference source and the radar. It cannot reproduce the non-uniform, multi-degree-of-freedom dynamic pose changes and random vibration environment between real vehicles, and thus cannot simulate highly dynamic and near-real-world composite interference. Consequently, it cannot comprehensively and reliably test and evaluate its anti-interference capabilities, reducing the accuracy of the test.

[0004] Therefore, an anti-interference testing device for vehicle-mounted lidar is needed. Utility Model Content

[0005] To overcome the shortcomings of existing testing equipment for LiDAR anti-interference capabilities, which can only realize static or simple uniform relative motion between the interference source and the radar, and cannot reproduce the non-uniform, multi-degree-of-freedom dynamic pose changes and random vibration environment between real vehicles, and thus cannot simulate highly dynamic and near-real-world composite interference, the present invention provides a vehicle-mounted LiDAR anti-interference testing device.

[0006] The technical solution of this utility model is: a vehicle-mounted lidar anti-interference testing device, comprising a support frame, a fixed plate, a radar, a motor, a large gear, a small gear, a fixed frame, a movable frame, a first spring, and protrusions. A fixed plate is fixedly connected to the top of the support frame, and the radar is placed on the top of the fixed plate. A motor is installed on the right side of the support frame, and a small gear is provided on the output shaft of the motor. A large gear is rotatably provided on the lower part of the support frame, and the large gear meshes with the small gear. A fixed frame is fixedly connected to the large gear. A movable frame is slidably provided on the upper part of the fixed frame. The movable frame is used to place the interference device. A first spring connects the movable frame and the fixed frame. Multiple protrusions are snapped onto the top of the fixed plate, and the movable frame can contact the protrusions.

[0007] Preferably, the support frame also includes a limiting plate, a contact plate, a mounting plate, a moving rod, a connecting plate, and a second spring. The limiting plate is fixedly connected to the lower part of the support frame, and the contact plate is fixedly connected to the fixed frame. Multiple mounting plates are installed on the limiting plate, and a moving rod is slidably provided on the mounting plate. The moving rod can contact the contact plate, and a connecting plate is fixedly connected to the upper part of the moving rod. Two second springs are connected between the connecting plate and the mounting plate.

[0008] Preferably, the device also includes a placement frame and a battery, with the placement frame installed on the left side of the support frame and the battery placed inside the placement frame.

[0009] Preferably, it also includes rubber plates, with multiple rubber plates fixedly connected to the top center of the fixing plate, and the rubber plates are in contact with the radar.

[0010] Preferably, it also includes a retaining ball, with a retaining ball provided at the lower part of the protrusion, and the retaining ball contacting the fixing plate.

[0011] Preferably, a protective plate is also included, with the right side of the support frame having a protective plate and the motor located inside the protective plate.

[0012] Compared with the prior art, this utility model provides a vehicle-mounted lidar anti-interference testing device with the following beneficial effects: 1. By driving the interference device to move in a circle around the radar and making it continuously experience vibration, impact and displacement changes caused by bump collisions on the movement path, the interference device generates highly dynamic composite interference that is close to the real scene. In this dynamic composite interference field that simulates the real vehicle environment, the device can more comprehensively and reliably test and evaluate the radar's anti-interference capability.

[0013] 2. By pushing the moving rod to slide on the contact plate, the mechanical constraints when the steering mechanism or moving parts encounter physical limits (such as obstacles) during vehicle operation are simulated.

[0014] 3. Connect the battery to the device's control system, radar, and motor. The battery provides the power required for the entire device (including the control system, radar, and motor) to operate, allowing the device to operate independently without relying on an external power source. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a partial sectional view of the support frame, fixing plate, radar, and other components of this utility model.

[0017] Figure 3 This is a partial sectional view of the fixed frame, movable frame, and first spring component of this utility model.

[0018] Figure 4 This is a partial sectional view of the limiting plate, contact plate, and second spring components of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the support frame, placement frame, and battery components of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Support frame, 2. Fixing plate, 3. Radar, 4. Rubber plate, 5. Motor, 6. Large gear, 7. Small gear, 8. Fixing frame, 9. Moving frame, 10. First spring, 11. Protrusion, 12. Ball retainer, 13. Limiting plate, 131. Contact plate, 14. Mounting plate, 15. Moving rod, 151. Connecting plate, 16. Second spring, 17. Placement frame, 18. Battery, 19. Protective plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: An anti-interference testing device for vehicle-mounted lidar, please refer to... Figures 1-5 The system includes a support frame 1, a fixed plate 2, a radar 3, a motor 5, a large gear 6, a small gear 7, a fixed frame 8, a movable frame 9, a first spring 10, and a protrusion 11. The fixed plate 2 is fixedly connected to the top of the support frame 1, and the radar 3 is placed on top of the fixed plate 2. The motor 5 is installed on the right side of the support frame 1, and a small gear 7 is installed on the output shaft of the motor 5. A large gear 6 is rotatably mounted on the lower part of the support frame 1, meshing with the small gear 7. The fixed frame 8 is fixedly connected to the large gear 6, and a movable frame 9 is slidably mounted on the upper part of the fixed frame 8. The movable frame 9 is used to hold the jamming equipment. A first spring 10 connects the movable frame 9 and the fixed frame 8. A protrusion 11 is snapped onto the top of the fixed plate 2. Four protrusions 11 are provided, and the movable frame 9 can contact the protrusions 11. Four rubber plates 4 are fixedly connected to the top middle position of the fixed plate 2. The rubber plates 4 contact the radar 3. The rubber plates 4 increase the friction with the radar 3 housing and provide a certain buffer through elastic deformation, which helps the radar 3 to remain stable during test vibration. A retaining ball 12 is provided at the lower part of the protrusions 11. The retaining ball 12 contacts the fixed plate 2, which facilitates the protrusions 11 to be locked and fixed on the fixed plate 2 and the position can be adjusted, thereby changing the collision point on the movement path of the interference device. A protective plate 19 is provided on the right side of the support frame 1. The motor 5 is located inside the protective plate 19 to prevent external collisions and improve the safety and durability of the equipment.

[0023] When this device is needed, the interference device is placed on the movable frame 9, and the motor 5 is started. The output shaft of the motor 5 rotates, driving the pinion 7 to rotate. The pinion 7 meshes with the large gear 6, which rotates accordingly and drives the fixed frame 8 to rotate. During the rotation, the movable frame 9 periodically contacts and collides with the protrusion 11 on the fixed plate 2. When a collision occurs, the movable frame 9 moves upward along the fixed frame 8, stretching the first spring 10. After the collision, under the reset action of the first spring 10, the movable frame 9, along with the interference device, returns to its original position. This process not only makes the interference device... The device moves in a circle around the radar 3 and continuously experiences vibrations, impacts, and displacement changes caused by collisions with the bump 11 along its path. This non-uniform, random vibration state effectively simulates the dynamic relative position changes of other interference sources (such as the radar 3 of a nearby vehicle) relative to the radar 3 under test during vehicle operation, as well as the real vibration environment. Therefore, the device can apply highly dynamic, near-realistic composite interference (including signal interference and physical vibration interference) to the lidar 3 under test, thereby more comprehensively and reliably testing and evaluating its anti-interference capability.

[0024] Example 2: Based on Example 1, please refer to... Figure 1 and Figure 4 It also includes a limiting plate 13, a contact plate 131, a mounting plate 14, a moving rod 15, a connecting plate 151, and a second spring 16. The lower part of the support frame 1 is fixedly connected to the limiting plate 13, and the contact plate 131 is fixedly connected to the fixing frame 8. Four mounting plates 14 are installed on the limiting plate 13. The moving rod 15 is slidably arranged on the mounting plate 14. The moving rod 15 can contact the contact plate 131. The upper part of the moving rod 15 is fixedly connected to the connecting plate 151, and two second springs 16 are connected between the connecting plate 151 and the mounting plate 14.

[0025] When the mounting bracket 8 rotates to a specific position, the contact plate 131 on it will contact the moving rod 15 and push the moving rod 15 to slide on the mounting plate 14. The second spring 16 will be stretched accordingly. This contact and pushing process simulates the mechanical constraint when the steering mechanism or moving part encounters a physical limit (such as an obstacle) during vehicle operation. When the contact plate 131 leaves the moving rod 15, the moving rod 15 (together with the connecting plate 151) is pushed back to its initial position under the reset action of the second spring 16.

[0026] Please see Figure 1 and Figure 5 It also includes a placement frame 17 and a battery 18. The placement frame 17 is installed on the left side of the support frame 1, and the battery 18 is placed inside the placement frame 17.

[0027] Before using the device, place the battery 18 into the placement frame 17 on the left side of the support frame 1. Then, connect the battery 18 to the device's control system, radar 3, and motor 5. The battery 18 provides the power required for the entire device (including the control system, radar 3, and motor 5) to operate, so that the device can operate independently without relying on an external power source.

[0028] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. A vehicle-mounted lidar anti-interference testing device, characterized in that: The device includes a support frame (1), a fixed plate (2), a radar (3), a motor (5), a large gear (6), a small gear (7), a fixed frame (8), a movable frame (9), a first spring (10), and protrusions (11). The top of the support frame (1) is fixedly connected to the fixed plate (2), and the radar (3) is placed on the top of the fixed plate (2). The right side of the support frame (1) is equipped with a motor (5), and the output shaft of the motor (5) is provided with a small gear (7). The lower part of the support frame (1) is rotatably provided with a large gear (6), which meshes with the small gear (7). The fixed frame (8) is fixedly connected to the large gear (6), and the movable frame (9) is slidably provided on the upper part of the fixed frame (8). The movable frame (9) is used to place the jamming device. The first spring (10) connects the movable frame (9) and the fixed frame (8). The top of the fixed plate (2) is snapped with multiple protrusions (11), and the movable frame (9) can contact the protrusions (11).

2. The anti-interference testing device for vehicle-mounted lidar as described in claim 1, characterized in that: It also includes a limiting plate (13), a contact plate (131), a mounting plate (14), a moving rod (15), a connecting plate (151), and a second spring (16). The lower part of the support frame (1) is fixedly connected to the limiting plate (13), and the contact plate (131) is fixedly connected to the fixing frame (8). Multiple mounting plates (14) are installed on the limiting plate (13). The moving rod (15) is slidably arranged on the mounting plate (14). The moving rod (15) can contact the contact plate (131). The upper part of the moving rod (15) is fixedly connected to the connecting plate (151), and two second springs (16) are connected between the connecting plate (15) and the mounting plate (14).

3. The anti-interference testing device for vehicle-mounted lidar as described in claim 2, characterized in that: It also includes a placement frame (17) and a battery (18). The placement frame (17) is installed on the left side of the support frame (1), and the battery (18) is placed inside the placement frame (17).

4. The vehicle-mounted lidar anti-interference testing device as described in claim 3, characterized in that: It also includes a rubber plate (4), and multiple rubber plates (4) are fixedly connected to the top middle position of the fixing plate (2), and the rubber plates (4) are in contact with the radar (3).

5. The anti-interference testing device for vehicle-mounted lidar as described in claim 4, characterized in that: It also includes a ball (12), which is provided at the lower part of the protrusion (11) and contacts the fixing plate (2).

6. The anti-interference testing device for vehicle-mounted lidar as described in claim 5, characterized in that: It also includes a protective plate (19), the right side of the support frame (1) is provided with a protective plate (19), and the motor (5) is located inside the protective plate (19).

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