Automobile wading laser radar multi-angle testing device

Abstract

The utility model provides an automobile wading laser radar multi-angle testing device, which belongs to the technical field of automobile part detection and comprises a base, a simulated wading cabin, a lifting adjusting mechanism, an angle adjuster, a vehicle-mounted mounting clamp and a water wheel mechanism. Different water levels are simulated by adding water into the simulated wading cabin; meanwhile, a water wheel mechanism is utilized, a scene of water surface fluctuation is simulated, a vehicle-mounted mounting clamp is combined, the actual working scene of the laser radar is restored to the maximum extent, high-precision angle adjustment in the vertical direction and the horizontal direction can be achieved, the angle testing requirement of the vehicle-mounted wading laser radar under the complex wading working condition is met, and the working efficiency is improved. The device overcomes the defects of the existing testing device in the aspects of water depth simulation, laser radar angle test data and the integrating degree of practical application, and has high popularization value.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts testing technology, and in particular, it is a multi-angle testing device for automotive wading lidar, which is a special device for testing the scanning angle, deflection range and stability of automotive wading lidar under simulated automotive wading conditions. Background Technology

[0002] With the development of autonomous driving technology, LiDAR, as a core component for vehicle environmental perception, needs to maintain high precision under various complex working conditions. When a vehicle is driving through water, the accuracy of the angle measurement and ranging accuracy of the vehicle-mounted water-wading LiDAR is crucial, as it directly affects the vehicle's ability to identify water depth and thus impacts driving safety.

[0003] However, existing vehicle-mounted wading radar detection technology has many shortcomings, such as:

[0004] 1. Insufficient simulation of water wading scenarios: Traditional testing devices are mainly designed for dry environments and cannot simulate water wading conditions under varying water levels, as well as multi-angle problems of vehicles, making it difficult to detect the angular stability of lidar in real water wading scenarios.

[0005] 2. The installation simulation is not realistic: it does not refer to the actual installation structure of a car, the installation of the lidar is significantly different, and it cannot reproduce the angle characteristics in the vehicle environment.

[0006] 3. Angle testing equipment has a complex structure, is cumbersome to operate, and is difficult to collect test data.

[0007] The aforementioned problems have led to significant discrepancies between existing vehicle-mounted water-wading lidar test data and actual applications. Therefore, there is an urgent need for a device that can realistically simulate water-wading conditions, is convenient, and allows for precise adjustment of the test angle. Utility Model Content

[0008] To address the aforementioned technical problems, this utility model provides a multi-angle testing device for automotive wading lidar, solving the problems of distorted testing scenarios and insufficient angle adjustment accuracy in the prior art, and providing accurate data for optimizing the performance of automotive wading lidar.

[0009] A multi-angle testing device for automotive wading lidar includes:

[0010] Base, simulated wading chamber, lifting and adjusting mechanism, angle adjuster, vehicle-mounted installation fixture, and water turbine mechanism;

[0011] The base serves as the basic structure for mounting the entire device.

[0012] As an example, the base is made of high-strength stainless steel and has an overall cuboid structure.

[0013] As an example, the base is provided with four sets of height-adjustable shock-absorbing feet around its bottom, which stabilize the entire device and ensure that the entire device is level.

[0014] The simulated wading chamber: located above the base, is a container structure used to simulate different wading depth environments for automobiles;

[0015] As an example, the simulated wading chamber is made of transparent plexiglass.

[0016] As an example, the simulated wading chamber is a square structure with waterproof sealing rings around its perimeter.

[0017] As an example, a height gauge is installed inside the simulated wading chamber.

[0018] The lifting and adjusting mechanism includes: an inverted U-shaped column and a horizontal bar mechanism;

[0019] The inverted U-shaped columns are installed on the upper sides of both sides of the base, such that the two side columns of the inverted U-shaped columns are located on both sides of the simulated wading tank.

[0020] The two sides of the inverted U-shaped column have through grooves.

[0021] As an example, the outer side of the grooves on both sides of the pillars is provided with scale lines to confirm the height of the vehicle-mounted wading lidar.

[0022] The crossbar mechanism includes: a crossbar body, a left guide post, a right guide post, a vertical angle adjuster fixing bracket, fixing screws, a main fastening bolt, and a secondary fastening bolt;

[0023] The left and right guide posts are symmetrically arranged on the left and right sides of the crossbar body and are inserted into the grooves inside the two side posts; this allows the crossbar body to move up and down, serving as a sliding connection.

[0024] The main fastening bolts and secondary fastening bolts are also respectively set on the left and right sides of the two columns and pass through the grooves on the left and right sides respectively. By adjusting the main fastening bolts and secondary fastening bolts, the main body of the crossbar is fixed and prevented from moving up and down.

[0025] The fixing screws are used to connect the vertical angle adjuster fixing bracket to the crossbar body.

[0026] As an example, the adjustable height travel of the crossbar mechanism is 1000-1500mm, which can precisely adjust the height of the angle adjuster to simulate different height positions of a car's lidar installation.

[0027] The angle adjuster includes: a vertical angle adjuster, a horizontal angle adjuster, and a horizontal angle adjuster mounting bracket;

[0028] One end of the horizontal angle adjuster mounting bracket is fixedly connected to one side of the vertical angle adjuster, the other end of the horizontal angle adjuster mounting bracket is connected to one side of the horizontal angle adjuster, and the other side of the vertical angle adjuster is connected to one side of the vertical angle adjuster mounting bracket.

[0029] As an example, the rotational accuracy of both the vertical and horizontal angle adjusters is 0.1°.

[0030] As an example, the vertical angle adjuster and the horizontal angle adjuster are installed perpendicular to each other, and this angle design can achieve optimal angle adjustment for the vehicle-mounted wading lidar.

[0031] As an example, the mounting bracket for the horizontal angle adjuster is a plate-type structure.

[0032] As an example, the vertical angle adjuster fixing bracket has a structure with a cuboid on one side and a cylindrical pin on the other side.

[0033] The vehicle-mounted mounting fixture is located on the other side of the horizontal angle adjuster and is used to mount the vehicle-mounted wading lidar.

[0034] As an example, the vehicle-mounted mounting fixture is designed according to the mounting point of the vehicle-mounted wading lidar, and can be adapted to various models of vehicle-mounted wading lidar.

[0035] The water turbine mechanism is installed inside the simulated wading chamber and includes: a water turbine body, a handle, and a drive shaft; used to simulate water flow and waves.

[0036] As an example, the water turbine body is provided with multiple water turbine scales.

[0037] The beneficial effects of this utility model are:

[0038] ① Water wading scenario simulation: By adding water into the simulated water wading chamber, different water levels are simulated; at the same time, the water turbine mechanism is used to simulate the water surface ripple scenario, combined with the vehicle-mounted installation fixture, to restore the actual working scenario of the lidar to the greatest extent.

[0039] ② Multi-angle high-precision adjustment: The angle adjuster allows for multi-angle adjustment, enabling high-precision angle adjustment in both vertical and horizontal directions, meeting the angle testing requirements of vehicle-mounted wading lidar under complex wading conditions.

[0040] ③ It solves the shortcomings of existing testing devices in terms of the consistency between water depth simulation, lidar angle test data and actual applications, and has a high degree of realism in the simulation environment; multi-angle high-precision adjustment can accurately simulate the angle of vehicle-mounted wading lidar, helping R&D personnel to optimize product design and improve the environmental perception accuracy of autonomous driving systems. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of a multi-angle testing device for a car wading lidar according to the present invention.

[0042] Figure 2 This is a schematic diagram of the angle adjuster structure of a multi-angle testing device for automotive wading lidar according to the present invention.

[0043] Figure 3 This is a schematic diagram of the water turbine mechanism of a multi-angle testing device for automotive wading lidar according to the present invention.

[0044] Figure 4 This is a schematic diagram of the crossbar mechanism of a multi-angle testing device for automotive wading lidar according to the present invention. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Figures 1 to 4 As shown.

[0046] A multi-angle testing device for automotive wading lidar includes:

[0047] Base 101, simulated wading tank 102, lifting and adjusting mechanism, angle adjuster, vehicle-mounted installation fixture 110, and water turbine mechanism;

[0048] The base 101 serves as the basic mounting structure for the entire device.

[0049] As an example, the base 101 is made of high-strength stainless steel and has an overall cuboid structure.

[0050] As an example, the base is provided with four sets of height-adjustable shock-absorbing feet 118 around its bottom, which stabilize the entire device and ensure that the entire device is level.

[0051] The simulated wading chamber 102 is located above the base and is a container structure used to simulate different wading depths of a car.

[0052] As an example, the simulated wading chamber 102 is made of transparent plexiglass.

[0053] As an example, the simulated wading chamber is a square structure with waterproof sealing rings 119 around its perimeter.

[0054] The lifting and adjusting mechanism includes: an inverted U-shaped column 103 and a crossbar mechanism; used to support and adjust the height of the vehicle-mounted wading lidar.

[0055] The inverted U-shaped column 103 is installed on the upper sides of both sides of the base, such that the two side columns of the inverted U-shaped column are located on both sides of the simulated wading tank 102.

[0056] The two sides of the inverted U-shaped column have through grooves.

[0057] As an example, the outer side of the grooves on both sides of the pillars is provided with scale lines to confirm the height of the vehicle-mounted wading lidar.

[0058] The crossbar mechanism includes: a crossbar body 106, a left guide post 121, a right guide post 122, a vertical angle adjuster fixing bracket 107, a fixing screw 123, a main fastening bolt 105, and a secondary fastening bolt 113.

[0059] The left guide post 121 and the right guide post 122 are symmetrically arranged on the left and right sides of the crossbar body 106 and are inserted into the grooves on the inner side of the two side posts; so that the crossbar body 106 can move up and down and play a sliding connection role.

[0060] The main fastening bolt 105 and the secondary fastening bolt 113 are also respectively set on the left and right sides of the two columns and pass through the grooves on the left and right sides respectively. By adjusting the main fastening bolt and the secondary fastening bolt, the crossbar body 106 is fixed and prevented from moving up and down.

[0061] The fixing screw 123 is used to connect the vertical angle adjuster fixing bracket 107 to the crossbar body 106.

[0062] As an example, the adjustable height travel of the crossbar mechanism is 1000-1500mm, which can precisely adjust the height of the angle adjuster to simulate different height positions of a car's lidar installation.

[0063] The angle adjuster includes: a vertical angle adjuster 108, a horizontal angle adjuster 110, and a horizontal angle adjuster mounting bracket 109;

[0064] One end of the horizontal angle adjuster mounting bracket 109 is fixedly connected to one side of the vertical angle adjuster 108, the other end of the horizontal angle adjuster mounting bracket 109 is connected to one side of the horizontal angle adjuster 110, and the other side of the vertical angle adjuster 108 is connected to one side of the vertical angle adjuster fixing bracket 107.

[0065] As an example, the rotational accuracy of both the vertical angle adjuster 108 and the horizontal angle adjuster 110 is 0.1°.

[0066] As an example, the vertical angle adjuster 108 and the horizontal angle adjuster 110 are mounted perpendicular to each other, and this angle design achieves optimal angle adjustment for the vehicle-mounted wading lidar.

[0067] As an example, the horizontal angle adjuster mounting bracket 109 is a plate-type structure.

[0068] As an example, the vertical angle adjuster fixing bracket 107 has a structure with a cuboid on one side and a cylindrical pin on the other side.

[0069] The vehicle-mounted mounting fixture 111 is located on the other side of the horizontal angle adjuster 110 and is used to mount the vehicle-mounted wading lidar.

[0070] As an example, the vehicle-mounted mounting fixture 111 is designed according to the mounting point of the vehicle-mounted wading lidar, and can be adapted to various models of vehicle-mounted wading lidar 112.

[0071] The water turbine mechanism is installed inside the simulated wading chamber and includes: a water turbine body 114, a handle 116, and a drive shaft 115; used to simulate water flow and waves.

[0072] As an example, the water turbine body 114 is provided with a plurality of water turbine scales 124.

[0073] To better illustrate the design principle of this utility model, specific embodiments are described below:

[0074] Example 1: Assembly process of a multi-angle testing device for automotive wading lidar;

[0075] a. Place the base 101 on a horizontal test site and adjust the shock-absorbing bracket 118 to make the base horizontal.

[0076] b. Fix the simulated wading chamber 102 onto the base 101, and install a waterproof sealing ring 119 between the two to check the waterproof seal and ensure that there is no leakage.

[0077] c. Install the water turbine mechanism inside the simulated wading chamber 102, and adjust the water turbine scale 124, connecting shaft 115, and handle 116;

[0078] c. Install the lifting and adjusting mechanism, and install the inverted U-shaped column 103, the crossbar body 106, the left guide column 121, and the right guide column 122 into place, and tighten them with the main fastening bolt 105 and the secondary fastening bolt 113; (the crossbar body 106 has corresponding bolt holes for the main fastening bolt 105 and the secondary fastening bolt 113 on both the left and right sides).

[0079] d. Install the vertical angle adjuster fixing bracket 107 on the crossbar body 106;

[0080] e. Install the angle adjusters, and install the vertical angle adjuster 108, the horizontal angle adjuster mounting bracket 109, and the horizontal angle adjuster 110 in sequence;

[0081] f. Fix the vehicle-mounted mounting clamp 111 onto the horizontal angle adjuster 110 of the angle adjuster, and adjust the mounting clamp according to the radar model.

[0082] g. Assembly complete, awaiting testing.

[0083] Example 2: Test process of a multi-angle testing device for automotive wading lidar;

[0084] a. Pump water into the simulated wading chamber 102 to the set water level using water pump 117 (the water level can be read directly from the scale on the height gauge of the simulated wading chamber 102).

[0085] b. Loosen the main fastening bolt 105 and the secondary fastening bolt 113, manually control the lifting crossbar mechanism to raise the angle adjuster to the height simulating a car wading through water, and then tighten the main fastening bolt 105 and the secondary fastening bolt 113 (the reading can be directly read through the scale line of the inverted U-shaped column 103).

[0086] c. Secure the radar 111 in the mounting fixture 110;

[0087] d. Manually adjust the knob on the multi-angle adjuster to adjust the angle, and switch at each angle, while simultaneously collecting test data from the vehicle-mounted wading radar;

[0088] e. Manually rotate the water wheel to make the water ripple, and simultaneously collect test data from the vehicle-mounted wading radar;

[0089] f. After the test is completed, drain the water from the simulated wading chamber, turn off all power, and disassemble the vehicle-mounted wading lidar.

[0090] Example 3: Material Selection;

[0091] a. The base, angle adjuster bracket, inverted U-shaped column, and crossbar main body, and other load-bearing components are made of 304 stainless steel, which is high in strength and corrosion-resistant;

[0092] b. The simulated wading chamber is made of 20mm thick plexiglass, which has good light transmission and impact resistance;

[0093] c. The waterproof sealing ring is made of fluororubber, which is resistant to water, oil, and high temperature.

[0094] d. The waterwheel body and handle are made of stainless steel and waterproofed, while the gears are made of transparent acrylic material.

[0095] f. All fastening screws are national standard screws.

[0096] The above description is only a preferred embodiment of the present utility model. It should be understood that the above description of the embodiments is only used to help understand the method and core idea of ​​the present utility model, and is not intended to limit the protection scope of the present utility model. Any modifications, equivalent substitutions, etc. made within the idea and principle of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-angle testing device for automotive wading lidar, characterized in that, include: Base, simulated wading chamber, lifting and adjusting mechanism, angle adjuster, vehicle-mounted installation fixture, and water turbine mechanism; The base serves as the basic structure for mounting the entire device. The simulated wading chamber: located above the base, is a container structure used to simulate different wading depth environments for automobiles; The lifting and adjusting mechanism includes: an inverted U-shaped column and a crossbar mechanism; used to support and adjust the height of the vehicle-mounted wading lidar. The angle adjuster includes: a vertical angle adjuster, a horizontal angle adjuster, and a horizontal angle adjuster mounting bracket; One end of the horizontal angle adjuster mounting bracket is fixedly connected to one side of the vertical angle adjuster, the other end of the horizontal angle adjuster mounting bracket is connected to one side of the horizontal angle adjuster, and the other side of the vertical angle adjuster is connected to one side of the vertical angle adjuster mounting bracket. The vehicle-mounted mounting fixture is located on the other side of the horizontal angle adjuster and is used to mount the vehicle-mounted wading lidar. The water turbine mechanism is installed inside the simulated wading chamber and includes: a water turbine body, a handle, and a drive shaft; used to simulate water flow and waves.

2. The multi-angle testing device for automotive wading lidar according to claim 1, characterized in that, The inverted U-shaped columns are installed on the upper sides of both sides of the base, such that the two side columns of the inverted U-shaped columns are located on both sides of the simulated wading tank. The two sides of the inverted U-shaped column have through grooves. The crossbar mechanism includes: a crossbar body, a left guide post, a right guide post, a vertical angle adjuster fixing bracket, fixing screws, a main fastening bolt, and a secondary fastening bolt; The left and right guide posts are symmetrically arranged on the left and right sides of the crossbar body and are inserted into the grooves inside the two side posts; this allows the crossbar body to move up and down, serving as a sliding connection. The main fastening bolts and secondary fastening bolts are also respectively set on the left and right sides of the two columns and pass through the grooves on the left and right sides respectively. By adjusting the main fastening bolts and secondary fastening bolts, the main body of the crossbar is fixed and prevented from moving up and down. The fixing screws are used to connect the vertical angle adjuster fixing bracket to the crossbar body.

3. The multi-angle testing device for automotive wading lidar according to claim 1, characterized in that, The base has four sets of height-adjustable shock-absorbing feet around its bottom.

4. The multi-angle testing device for automotive wading lidar according to claim 1, characterized in that, The simulated wading chamber is a square structure made of transparent plexiglass.

5. The multi-angle testing device for automotive wading lidar according to claim 1, characterized in that, A height gauge is installed inside the simulated wading chamber.

6. The multi-angle testing device for automotive wading lidar according to claim 2, characterized in that, The outer side of the grooves on both sides of the uprights is provided with scale lines.

7. The multi-angle testing device for automotive wading lidar according to claim 1, characterized in that, The main body of the water turbine is equipped with multiple water turbine scales.

8. The multi-angle testing device for automotive wading lidar according to claim 1, characterized in that, The rotational accuracy of both the vertical and horizontal angle adjusters is 0.1°.

9. A multi-angle testing device for automotive wading lidar according to claim 1, characterized in that, The vertical angle adjuster and the horizontal angle adjuster are installed perpendicular to each other.

10. A multi-angle testing device for automotive wading lidar according to claim 1, characterized in that, The vertical angle adjuster fixing bracket is a cuboid on one side and a cylindrical pin on the other side.

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