A lidar surface contamination test aid

Abstract

The utility model relates to laser radar technical field especially relates to a kind of laser radar surface pollution test auxiliary equipment, including chassis, test box, control box, mounting plate, servo motor, placement shell, acrylic plate and laser radar ontology, and chassis is fixedly connected with test box, control box is installed on test box, mounting plate is fixedly connected in test box, servo motor is installed on mounting plate, and placement shell is installed on the output shaft of servo motor, laser radar ontology is placed in placement shell, and acrylic plate is set in placement shell. By starting two pipeline pumps, liquid storage barrel is sprayed to acrylic plate surface by pipeline pump with liquid through atomizing spray head on first discharge pipe, to carry out liquid pollution auxiliary test, and powder storage barrel is sprayed to acrylic plate surface by pipeline pump with powder through electrostatic spray head on second discharge pipe, to carry out dust pollution auxiliary test, to have liquid and dust double pollution simulation function.

Description

Technical Field

[0001] This utility model relates to the field of lidar technology, and in particular to an auxiliary device for testing surface contamination in lidar. Background Technology

[0002] The surface contamination test for lidar is an experimental process that evaluates whether the performance of lidar degrades or fails when the optical window is affected by contaminants such as dust, water droplets, oil, ice, and snow.

[0003] Patent CN218068280U discloses an auxiliary device for testing surface contamination of lidar. It includes a liquid delivery mechanism and a nozzle. The liquid delivery mechanism comprises a pipe body and a power component. The pipe body has a receiving space, and one end of the power component passes through the receiving space. The nozzle includes an input end and a spraying end. The input end is connected to the pipe body and communicates with the receiving space. Using this patent, a contamination test liquid is sprayed onto the lidar surface via the nozzle through the liquid delivery mechanism. However, this existing patent only offers liquid contamination testing. During vehicle operation, lidar often faces combined liquid and solid particle contamination. While it can spray liquid, it cannot simulate solid or semi-solid contaminants such as dust and silt, leading to significant discrepancies between test results and actual usage.

[0004] Therefore, there is a need for an auxiliary device for testing surface contamination with lidar that simulates both liquid and dust. Utility Model Content

[0005] To overcome the shortcomings of existing patents that only offer liquid contamination testing, which is often the case when a vehicle is in motion, lidar often faces combined liquid and solid particle contamination, and while it can spray liquid, it cannot simulate solid or semi-solid pollutants such as dust and silt, resulting in significant deviations between test results and actual use, this utility model provides an auxiliary device for lidar surface contamination testing that simulates both liquid and dust.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: A laser radar surface contamination testing auxiliary device, comprising a base frame, a test box, a control box, a mounting plate, a servo motor, a placement shell, an acrylic plate, and a laser radar body. The test box is fixedly connected to the base frame, the control box is mounted on the test box, the mounting plate is fixedly connected inside the test box, the servo motor is mounted on the mounting plate, the placement shell is mounted on the output shaft of the servo motor, the laser radar body is placed inside the placement shell, and an acrylic plate is disposed inside the placement shell. The device further comprises a liquid storage tank, a first discharge pipe, an atomizing nozzle, a powder storage tank, a pipeline pump, a second discharge pipe, and an electrostatic nozzle. The liquid storage tank and the powder storage tank are fixedly connected to the test box. Pipeline pumps are installed on both the liquid and powder storage tanks. The first discharge pipe is connected to the pipeline pump near the liquid storage tank, and the second discharge pipe is connected to the pipeline pump near the powder storage tank. An atomizing nozzle is disposed on the first discharge pipe, and an electrostatic nozzle is disposed on the second discharge pipe.

[0007] Furthermore, it also includes ear plates, guide rods, slide plates, locking rods, and elastic elements. Two ear plates are installed on the lidar body, two guide rods are fixedly connected to the housing, a slide plate is slidably arranged between the two guide rods, two locking rods are fixedly connected to the slide plate, and elastic elements are sleeved on the guide rods, with the two ends of the elastic elements connected to the guide rods and the slide plate, respectively.

[0008] Furthermore, it also includes damping hinges and a protective door. The test box is equipped with two damping hinges, and a protective door is hinged between the two damping hinges.

[0009] Furthermore, it also includes observation boards; two observation boards are embedded in the test box.

[0010] Furthermore, it also includes guide plates, with two guide plates fixedly connected inside the shell.

[0011] Furthermore, it also includes sealing caps, with both liquid storage tanks and powder storage tanks covered with sealing caps.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. By starting two pipeline pumps, the liquid storage tank sprays liquid onto the surface of the acrylic plate through the atomizing nozzle on the first discharge pipe via the pipeline pump, thereby conducting liquid pollution auxiliary test. The powder storage tank sprays powder onto the surface of the acrylic plate through the electrostatic nozzle on the second discharge pipe via the pipeline pump, thereby conducting dust pollution auxiliary test, thus having the function of simulating both liquid and dust pollution.

[0013] 2. By releasing the slide plate, the elastic element rebounds, causing the slide plate and two locking rods to move upwards. This allows the slide plate to move the two locking rods upwards and engage with the two ear plates, facilitating quick sample replacement after testing and achieving rapid assembly and disassembly.

[0014] 3. The protective door, connected by a damping hinge, can be opened and closed slowly, providing a safe and convenient access point to the test chamber, facilitating operators to debug equipment, change samples, or perform maintenance. Attached Figure Description

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

[0016] Figure 2 This is a three-dimensional sectional view of the test box, mounting plate, and liquid storage tank of this utility model.

[0017] Figure 3 This is a three-dimensional cross-sectional view of the test box, placement shell, and powder storage bin of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the mounting plate, servo motor, and housing of this utility model.

[0019] Figure 5 This is a three-dimensional cross-sectional view of the mounting plate, housing, and lidar body of this utility model.

[0020] Figure 6 This is a three-dimensional cross-sectional view of the housing, guide rod, and slide plate of this utility model.

[0021] Figure 7 This is an exploded view of the lidar body, slide plate, and lever of this utility model.

[0022] In the attached diagrams: 1-Base frame, 2-Test box, 3-Control box, 4-Mounting plate, 5-Servo motor, 6-Placement shell, 7-Acrylic plate, 8-LiDAR body, 9-Liquid storage tank, 10-First discharge pipe, 11-Atomizing nozzle, 12-Powder storage tank, 13-Pipeline pump, 14-Second discharge pipe, 15-Electrostatic nozzle, 16-Ear plate, 17-Guide rod, 18-Slide plate, 19-Clamping rod, 20-Elastic element, 21-Damping hinge, 22-Protective door, 23-Observation plate, 24-Guide plate, 25-Sealing cover. Detailed Implementation

[0023] 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.

[0024] Example 1: An auxiliary device for testing surface contamination with lidar, see [reference] Figures 1-7 As shown, the system includes a base frame 1, a test chamber 2, a control box 3, a mounting plate 4, a servo motor 5, a housing 6, an acrylic plate 7, and a lidar body 8. The test chamber 2 is welded to the top of the base frame 1, and the control box 3 is bolted to the bottom of the test chamber 2. The mounting plate 4 is welded to the top of the test chamber 2, and the servo motor 5 is bolted to the lower part of the mounting plate 4. The housing 6 is mounted on the output shaft of the servo motor 5, and the lidar body 8 is placed inside the housing 6. The acrylic plate 7 is located at the front of the housing 6. The system also includes a liquid storage tank 9, a first discharge pipe 10, and an atomizing nozzle. 11. Powder storage tank 12, pipeline pump 13, second discharge pipe 14 and electrostatic nozzle 15. A liquid storage tank 9 is fixedly connected to the top left side of the test chamber 2, and a powder storage tank 12 is fixedly connected to the top right side of the test chamber 2. Pipeline pumps 13 are installed at the bottom of both the liquid storage tank 9 and the powder storage tank 12. A first discharge pipe 10 is connected to the pipeline pump 13 near the liquid storage tank 9, and a second discharge pipe 14 is connected to the pipeline pump 13 near the powder storage tank 12. An atomizing nozzle 11 is provided at the end of the first discharge pipe 10, and an electrostatic nozzle 15 is provided at the end of the second discharge pipe 14. The electrostatic nozzle 15 and the atomizing nozzle 11 are aligned with the acrylic plate 7.

[0025] See Figures 1-3 As shown, it also includes an observation plate 23, which is embedded on both the left and right sides of the test box 2.

[0026] See Figure 5 As shown, it also includes a guide plate 24, and the left and right sides of the housing 6 are fixedly connected to the guide plate 24.

[0027] See Figure 2 and Figure 3 As shown, it also includes a sealing cap 25, and the tops of the liquid storage tank 9 and the powder storage tank 12 are both covered with sealing caps 25.

[0028] When this device is needed, the contamination test liquid is poured into the liquid storage tank 9, and then the powder is added into the powder storage tank 12. The sealing cap 25 is then placed on the liquid storage tank 9 and the powder storage tank 12 to prevent contaminants from entering and to keep the test material pure. Then, the lidar body 8 is placed in the placement shell 6, with the acrylic plate 7 serving as a light-transmitting window to allow the signal to pass through. The servo motor 5 on the mounting plate 4 inside the test chamber 2 is then started, causing the output shaft of the servo motor 5 to drive the rotation of the placement shell 6 and the lidar body 8 inside it, simulating the working state of the vehicle-mounted antenna in different postures. At the same time, the pipeline pump 13 is started, and the liquid storage tank 9 is sprayed through the pipeline pump 13 onto the surface of the acrylic plate 7 via the atomizing nozzle 11 on the first discharge pipe 10, thus performing liquid contamination auxiliary testing. Then, another pipeline pump 13 is started, and the powder storage tank 12 is sprayed through the pipeline pump 13 onto the surface of the acrylic plate 7 via the electrostatic nozzle 15 on the second discharge pipe 14, thus performing dust contamination auxiliary testing. This provides a dual contamination simulation function for liquid and dust, increasing the diversity of testing.

[0029] Example 2: Based on Example 1, refer to Figures 5-7 As shown, it also includes ear plates 16, guide rods 17, slide plates 18, locking rods 19, and elastic elements 20. Ear plates 16 are installed on both the left and right sides of the lidar body 8. Guide rods 17 are symmetrically fixedly connected to the bottom of the housing 6. Slide plates 18 are slidably arranged between the two guide rods 17. Locking rods 19 are fixedly connected to both the left and right sides of the slide plates 18. The locking rods 19 are inserted into the adjacent ear plates 16. Elastic elements 20 are sleeved on the guide rods 17. The two ends of the elastic elements 20 are connected to the guide rods 17 and the slide plates 18, respectively.

[0030] When placing the lidar body 8 into the housing 6, first pull down the slide plate 18. The slide plate 18 moves downward, causing the two locking rods 19 to move downward. The guide rod 17 ensures that the slide plate 18 moves in a straight line, while simultaneously squeezing the elastic element 20. The elastic element 20 is then compressed. Then, the lidar body 8 is placed into the housing 6, so that the guide plate 24 guides it to slide accurately into the predetermined position when the lidar body 8 is installed. Then, release the slide plate 18. The elastic element 20 rebounds and causes the slide plate 18 and the two locking rods 19 to move upward, so that the slide plate 18 moves the two locking rods 19 upward and locks them into the two ear plates 16. This facilitates quick sample replacement after testing, thereby achieving the effect of quick assembly and disassembly.

[0031] See Figure 1 As shown, it also includes a damping hinge 21 and a protective door 22. The damping hinge 21 is symmetrically installed on the left side of the test box 2, and the protective door 22 is hinged between the two damping hinges 21.

[0032] After the lidar body 8 is placed, the protective door 22 connected by the damping hinge 21 can be opened and closed slowly, providing a safe and convenient access to the test chamber 2, which is convenient for operators to debug equipment, change samples or perform maintenance, while avoiding damage caused by the sudden closing of the door. The embedded observation plates 23 on both sides of the test chamber 2 are made of transparent material, allowing real-time monitoring of the internal testing process.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An auxiliary device for testing surface contamination of a lidar, comprising a base frame (1), a test box (2), a control box (3), a mounting plate (4), a servo motor (5), a placement shell (6), an acrylic plate (7), and a lidar body (8). The test box (2) is fixedly connected to the base frame (1), the control box (3) is mounted on the test box (2), the mounting plate (4) is fixedly connected inside the test box (2), the servo motor (5) is mounted on the mounting plate (4), the placement shell (6) is mounted on the output shaft of the servo motor (5), the lidar body (8) is placed inside the placement shell (6), and an acrylic plate (7) is disposed inside the placement shell (6). The device is characterized in that... It also includes a liquid storage tank (9), a first discharge pipe (10), an atomizing nozzle (11), a powder storage tank (12), a pipeline pump (13), a second discharge pipe (14), and an electrostatic nozzle (15). The liquid storage tank (9) is fixedly connected to the test box (2), and the powder storage tank (12) is fixedly connected to the test box (2). Both the liquid storage tank (9) and the powder storage tank (12) are equipped with pipeline pumps (13). The pipeline pump (13) near the liquid storage tank (9) is connected to the first discharge pipe (10), and the pipeline pump (13) near the powder storage tank (12) is connected to the second discharge pipe (14). The first discharge pipe (10) is equipped with an atomizing nozzle (11), and the second discharge pipe (14) is equipped with an electrostatic nozzle (15).

2. The auxiliary device for testing surface contamination with lidar according to claim 1, characterized in that, It also includes ear plates (16), guide rods (17), slide plates (18), locking rods (19) and elastic elements (20). Two ear plates (16) are installed on the laser radar body (8). Two guide rods (17) are fixedly connected to the housing (6). A slide plate (18) is slidably arranged between the two guide rods (17). Two locking rods (19) are fixedly connected to the slide plate (18). An elastic element (20) is sleeved on the guide rod (17). The two ends of the elastic element (20) are connected to the guide rod (17) and the slide plate (18) respectively.

3. The auxiliary device for testing surface contamination with lidar according to claim 2, characterized in that, It also includes a damping hinge (21) and a protective door (22). Two damping hinges (21) are installed on the test box (2), and a protective door (22) is hinged between the two damping hinges (21).

4. The auxiliary device for testing surface contamination with lidar according to claim 3, characterized in that, It also includes observation boards (23), and two observation boards (23) are embedded on the test box (2).

5. The auxiliary device for testing surface contamination with lidar according to claim 4, characterized in that, It also includes guide plates (24), and two guide plates (24) are fixedly connected inside the housing (6).

6. The auxiliary device for testing surface contamination with lidar according to claim 5, characterized in that, It also includes a sealing cap (25), and the liquid storage tank (9) and the powder storage tank (12) are both covered with sealing caps (25).

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