Device capable of testing PMCW millimeter wave radar in multi-axis mode

Abstract

The utility model relates to a testing device, belongs to the technical field of radar testing, and particularly relates to a device capable of testing a PMCW millimeter wave radar in a multi-axis mode, which comprises a bottom plate, a sliding rail is fixedly connected to the top of the bottom plate, a sliding frame is sleeved on the sliding rail in a sliding mode, and a U-shaped plate is fixedly connected to the top of the bottom plate. Through the arrangement of the testing mechanism, the driving motor is started to drive the driving shaft and the cam to rotate, the cam can shake under the action of centrifugal force, and the fixed plate, the sliding rod, the placing plate and the meter-wave radar vibrate under the action of the telescopic spring, so that the detection effect of the radar on the bumper when the vehicle is started can be simulated; a water pump pumps out water in a water tank, then the water is sprayed out through a connecting pipe due to a spray head, a cam rotates to drive a swing rod and the spray head to swing through a cylindrical rod, then the detection effect of a radar on a bumper in rainy days can be simulated, and the problems that the state of the radar is not adjusted, and the weather in rainy days is not simulated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of radar testing, in particular to a device for multi-axis testing of PMCW millimeter-wave radar. Background Technique

[0002] With the advent of the era of intelligent vehicles, millimeter-wave corner radar, as a key sensor for realizing intelligent driving functions, requires a large number of on-vehicle tests in the initial stage of product verification to verify the distance and angle relationship between the radar and the bumper, so as to find the optimal solution for the distance and angle between the radar and the bumper, enabling electromagnetic waves to penetrate the vehicle bumper more efficiently, increasing the detection distance of the radar, and making the performance more stable.

[0003] After retrieving the Chinese patent with the publication number CN217766825U, a device for multi-axis testing of millimeter-wave radar is disclosed, including a base, a driving mechanism, a rotating mechanism, and a mounting bracket for fixing the radar; the rotating mechanism is connected with a bracket for fixing the bumper, and the mounting bracket is arranged on the base; the driving mechanism is used to drive the horizontal and vertical movement of the rotating mechanism; the rotating mechanism includes a first angular position table and a second angular position table, the first angular position table is used to adjust the angle between the bumper and the radar center, and the second angular position table is used to adjust the pitch angle of the bumper.

[0004] Based on the above retrieval and combined with the existing technology, it is found that:

[0005] During the detection of the existing bumper and radar, most only adjust the position and angle of the bumper, without adjusting the state of the radar, nor simulating rainy weather, resulting in an unsatisfactory detection effect on the radar. Content of the Utility Model

[0006] To solve the above technical problems, the utility model proposes a device for multi-axis testing of PMCW millimeter-wave radar. The driving motor drives the driving shaft and the cam to rotate. Under the action of centrifugal force, the cam can generate jitter. Under the action of the telescopic spring, the fixing plate, the sliding rod, the placing plate, and the meter-wave radar vibrate, so as to simulate the detection effect of the radar on the bumper when the vehicle is moving.

[0007] The technical solution for realizing the purpose of the utility model is: a device for multi-axis testing of PMCW millimeter-wave radar, including a bottom plate, the top of the bottom plate is fixedly connected with a slide rail, a sliding frame is slidably sleeved on the slide rail, and the top of the bottom plate is fixedly connected with a U-shaped plate, and further includes;

[0008] A testing mechanism, the testing mechanism is located on the U-shaped plate;

[0009] The test mechanism includes a jitter unit and a swing unit. The jitter unit includes two sliding holes formed in the top of the U-shaped plate. Two sliding rods are slidably connected in the two sliding holes. The tops of the two sliding rods are fixedly connected together with a placement plate. Telescopic springs are sleeved on the two placement plates, and the two ends of the telescopic springs are fixedly connected to the U-shaped plate and the placement plate respectively. The bottoms of the two sliding rods are fixedly connected together with a fixed plate. A driving motor is fixedly connected to the top of the fixed plate. The output end of the driving motor is connected with a driving shaft through a coupling. One end of the driving shaft is fixedly connected with a cam.

[0010] In some embodiments, the swing unit includes a fixed column rotatably connected to one side of the U-shaped plate. One end of the fixed column is fixedly connected with a swing rod. The top of the swing rod is fixedly connected with a nozzle. A strip-shaped hole is formed in one side of the swing rod. One end of the cam is fixedly connected with a cylindrical rod, and one end of the cylindrical rod penetrates through the strip-shaped hole and extends to one side of the swing rod.

[0011] In some embodiments, a water tank is fixedly connected to the top of the bottom plate. A water pump is arranged on the top of the water tank. The water outlet end of the water pump and the water spraying end of the nozzle are fixedly connected together with a connecting pipe.

[0012] In some embodiments, a slider is slidably sleeved on the sliding frame. One end of the slider is fixedly connected with a fixed frame. A second servo motor is fixedly connected to the top of the fixed frame. The output end of the second servo motor is fixedly connected with a fixed arm.

[0013] In some embodiments, an electric telescopic rod is fixedly connected to one side of the sliding frame. The output end of the electric telescopic rod is fixedly connected to the bottom of the slider.

[0014] In some embodiments, a first servo motor is fixedly connected to the top of the slide rail. The output end of the first servo motor is connected with a threaded rod through a coupling. The sliding frame is screwed on the threaded rod.

[0015] Compared with the prior art, the remarkable advantages of this utility model are:

[0016] By setting the test mechanism, the driving motor is started to drive the driving shaft and the cam to rotate. The cam can generate jitter under the action of centrifugal force. Under the action of the telescopic spring, the fixed plate, the sliding rod, the placement plate and the meter-wave radar vibrate, so as to simulate the detection effect of the radar on the bumper when the vehicle is driving. The water pump pumps the water in the water tank out, and then the water is sprayed out through the nozzle due to the connecting pipe. The cam rotates to drive the swing rod and the nozzle to swing through the cylindrical rod, so as to simulate the detection effect of the radar on the bumper in rainy days;

[0017] It solves the problems that the existing technology does not adjust the state of the radar and does not simulate the rainy weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further explained below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure provided by the present utility model in an embodiment;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the test mechanism provided by the present utility model in an embodiment;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the swing unit provided by the present utility model in an embodiment.

[0022] Explanation of reference numerals:

[0023] 1. Base plate; 11. Slide rail; 12. Threaded rod; 13. Slide carriage; 14. First servo motor; 15. Electric telescopic rod; 16. Slide block; 17. Fixed frame; 18. Second servo motor; 19. Fixed arm; 2. U-shaped plate; 21. Slide bar; 22. Placement plate; 23. Telescopic spring; 24. Fixed plate; 25. Driving motor; 26. Driving shaft; 27. Cam; 28. Cylindrical rod; 3. Fixed column; 31. Swing rod; 32. Sprayer; 33. Connecting pipe; 34. Water pump; 35. Water tank. Specific embodiments

[0024] The present utility model will be described in detail below. The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] The present utility model provides an apparatus for multi-axis testing of a PMCW millimeter-wave radar through improvement. The technical solution of the present utility model is:

[0026] As Figures 1 - 3As shown in the figure, a device for multi-axis testing of PMCW millimeter-wave radar includes a bottom plate 1. A slide rail 11 is fixedly connected to the top of the bottom plate 1. A sliding frame 13 is slidably sleeved on the slide rail 11. A U-shaped plate 2 is fixedly connected to the top of the bottom plate 1. It also includes a testing mechanism located on the U-shaped plate 2. The testing mechanism includes a jitter unit and a swing unit. The jitter unit includes two sliding holes opened on the top of the U-shaped plate 2. Two sliding rods 21 are slidably connected in the two sliding holes. The top ends of the two sliding rods 21 are fixedly connected together to form a placement plate 22. Two telescopic springs 23 are sleeved on the two placement plates 22. The two ends of the telescopic spring 23 are respectively fixedly connected to the U-shaped plate 2 and the placement plate 22. The bottom ends of the two sliding rods 21 are fixedly connected together to form a fixing plate 24. A driving motor 25 is fixedly connected to the top of the fixing plate 24. The output end of the driving motor 25 is connected to a driving shaft 26 through a coupling. One end of the driving shaft 26 is fixedly connected to a cam 27. Through the setting of the jitter unit, the driving motor 25 drives the driving shaft 26 and the cam 27 to rotate. Under the action of centrifugal force, the cam 27 can generate jitter. Under the action of the telescopic spring 23, the fixing plate 24, the sliding rod 21, the placement plate 22 and the meter-wave radar vibrate, so as to simulate the detection effect of the radar on the bumper when the vehicle is moving.

[0027] As Figure 1 shown, in one embodiment, the swing unit includes a fixed column 3 rotatably connected to one side of the U-shaped plate 2. One end of the fixed column 3 is fixedly connected to a swing rod 31. The top end of the swing rod 31 is fixedly connected to a nozzle 32. A strip-shaped hole is opened on one side of the swing rod 31. One end of the cam 27 is fixedly connected to a cylindrical rod 28. One end of the cylindrical rod 28 passes through the strip-shaped hole and extends to one side of the swing rod 31. A water tank 35 is fixedly connected to the top of the bottom plate 1. A water pump 34 is arranged on the top of the water tank 35. The water outlet end of the water pump 34 and the water spraying end of the nozzle 32 are fixedly connected together by a connecting pipe 33. Through the setting of the swing unit, the water pump 34 pumps the water in the water tank 35 out. Then the water is sprayed out through the nozzle 32 through the connecting pipe 33. The cam 27 rotates to drive the swing rod 31 and the nozzle 32 to swing through the cylindrical rod 28, so as to simulate the detection effect of the radar on the bumper in rainy days.

[0028] As Figure 1 shown, in one embodiment, a slider 16 is slidably sleeved on the sliding frame 13. One end of the slider 16 is fixedly connected to a fixing frame 17. A second servo motor 18 is fixedly connected to the top of the fixing frame 17. The output end of the second servo motor 18 is fixedly connected to a fixed arm 19. Through the setting of the second servo motor 18, the second servo motor 18 can drive the fixed arm 19 to rotate.

[0029] As Figure 1As shown, in one embodiment, an electric telescopic rod 15 is fixedly connected to one side of the sliding frame 13, and the output end of the electric telescopic rod 15 is fixedly connected to the bottom of the slider 16; through the arrangement of the electric telescopic rod 15, the electric telescopic rod 15 can drive the slider 16, the fixed frame 17 and the fixed arm 19 to move up and down.

[0030] As Figure 1 shown, in one embodiment, a first servo motor 14 is fixedly connected to the top of the slide rail 11, the output end of the first servo motor 14 is connected to a threaded rod 12 through a coupling, and the sliding frame 13 is screwed onto the threaded rod 12; through the arrangement of the first servo motor 14, the first servo motor 14 can drive the sliding frame 13 to move through the threaded rod 12.

[0031] The specific working method is as follows: When in use, install the bumper on the fixed arm 19, install the meter wave radar on the placement plate 22. The first servo motor 14 can drive the sliding frame 13 to move through the threaded rod 12, the electric telescopic rod 15 can drive the slider 16, the fixed frame 17 and the fixed arm 19 to move up and down, and the second servo motor 18 can drive the fixed arm 19 to rotate, realizing multi-axis direction adjustment, comparing the performance at different positions and angles, so as to test the best values. Start the drive motor 25 to drive the drive shaft 26 and the cam 27 to rotate. Under the action of centrifugal force, the cam 27 can generate jitter. Under the action of the telescopic spring 23, the fixed plate 24, the sliding rod 21, the placement plate 22 and the meter wave radar vibrate, and thus can simulate the detection effect of the radar on the bumper when the vehicle is moving. The water pump 34 pumps the water in the water tank 35, and then the water sprays out through the nozzle 32 due to the connecting pipe 33. The cam 27 rotates to drive the swing rod 31 and the nozzle 32 to swing through the cylindrical rod 28, and thus can simulate the detection effect of the radar on the bumper in rainy days.

[0032] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed by the above technical means, but also include the technical solutions composed of equivalent replacements of the above technical features. The matters not covered in the present invention belong to the common general knowledge of those skilled in the art.

Claims

1. A device capable of multi-axis testing of a PMCW millimeter wave radar, comprising a base plate (1), a slide rail (11) being fixedly connected to the top of the base plate (1), a slide frame (13) being slidably sleeved on the slide rail (11), and a U-shaped plate (2) being fixedly connected to the top of the base plate (1), characterized in that: Also includes; A testing mechanism, the testing mechanism being located on the U-shaped plate (2); The testing mechanism comprises a shaking unit and a swinging unit. The shaking unit comprises two sliding holes opened at the top of the U-shaped plate (2). The two sliding holes are slidably connected with sliding rods (21). The top ends of the two sliding rods (21) are fixedly connected with a placement plate (22). The two placement plates (22) are sleeved with telescopic springs (23). The two ends of the telescopic springs (23) are respectively fixedly connected with the U-shaped plate (2) and the placement plate (22). The bottom ends of the two sliding rods (21) are fixedly connected with a fixed plate (24). The top of the fixed plate (24) is fixedly connected with a driving motor (25). The output end of the driving motor (25) is connected with a driving shaft (26) through a coupling. One end of the driving shaft (26) is fixedly connected with a cam (27).

2. The device for multi-axis testing of PMCW millimeter wave radar according to claim 1, characterized in that: The swing unit comprises a fixed column (3) rotatably connected to one side of the U-shaped plate (2); one end of the fixed column (3) is fixedly connected to a swing rod (31); the top end of the swing rod (31) is fixedly connected to a nozzle (32); one side of the swing rod (31) is provided with a strip hole; one end of the cam (27) is fixedly connected to a cylindrical rod (28); one end of the cylindrical rod (28) passes through the strip hole and extends to one side of the swing rod (31).

3. The device for multi-axis testing of PMCW millimeter wave radar according to claim 2, characterized in that: A water tank (35) is fixedly connected to the top of the bottom plate (1), a water pump (34) is provided on the top of the water tank (35), and a connecting pipe (33) is fixedly connected to the water outlet end of the water pump (34) and the water spraying end of the spray head (32).

4. The device for multi-axis testing of PMCW millimeter wave radar according to claim 3, characterized in that: A slider (16) is slidably sleeved on the sliding frame (13), one end of the slider (16) is fixedly connected to a fixing frame (17), the top of the fixing frame (17) is fixedly connected to a second servo motor (18), and the output end of the second servo motor (18) is fixedly connected to a fixing arm (19).

5. The device for multi-axis testing of PMCW millimeter wave radar according to claim 1, characterized in that: An electric telescopic rod (15) is fixedly connected to one side of the sliding frame (13), and an output end of the electric telescopic rod (15) is fixedly connected to the bottom of the sliding block (16).

6. The device for multi-axis testing of PMCW millimeter wave radar according to claim 5, characterized in that: A first servo motor (14) is fixedly connected to the top of the slide rail (11); an output end of the first servo motor (14) is connected to a threaded rod (12) via a coupling; and a sliding frame (13) is screwed onto the threaded rod (12).

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