An automatic testing device for automobile radar waveguide antenna

Abstract

The utility model provides an automatic testing device of automobile radar waveguide antenna relates to automobile radar technical field, including support platform, the top right side fixed mounting of support platform has signal generator, the top left side fixed connection of support platform has sliding assembly, the top sliding connection of sliding assembly has fixed platform, the top fixed mounting of fixed platform has the antenna under test. The utility model discloses when driving motor works drives transmission screw rod rotation, makes the connecting slide that screw connection is in transmission screw rod on along the left and right movement of sliding guide rod, and then drives fixed platform and the synchronous movement of the antenna under test of top, thereby changes the distance between antenna and signal generator, and the accurate control of driving motor can realize the automatic continuous regulation of distance, and the higher precision compared with manual regulation, can accurate simulation signal transmission scene under different distance, makes test data more comprehensive, accurate, solves the problem that the distance regulation precision of existing device is low, and the problem of insufficient automation degree.

Description

Technical Field

[0001] This utility model relates to the field of automotive radar technology, and in particular to an automatic testing device for automotive radar waveguide antennas. Background Technology

[0002] The automotive radar waveguide antenna is a key component of the automotive radar system. Its main function is to transmit and receive radar electromagnetic wave signals in a directional manner, which is equivalent to the "signal bridge" of the radar system. It can ensure that radar waves propagate efficiently in a specific direction, thereby realizing the detection and distance measurement of targets such as obstacles, pedestrians, and other vehicles around the vehicle. It is an important guarantee for the realization of functions such as autonomous driving and collision warning in automobiles.

[0003] In the production and R&D process of automotive radar waveguide antennas, it is necessary to conduct precise performance testing, which requires the use of testing equipment. Testing equipment is a device specifically designed to detect various performance parameters of automotive radar waveguide antennas. By simulating signal transmission under actual working conditions, it determines whether the antenna meets design standards and usage requirements, thereby ensuring product quality.

[0004] The existing automatic testing device for automotive radar waveguide antennas has the following shortcomings:

[0005] In existing devices, the distance adjustment between the antenna and the signal generator is mostly done manually. This not only results in low adjustment accuracy but also makes it impossible to achieve automated continuous adjustment. It is difficult to accurately simulate signal transmission scenarios at different distances, affecting the comprehensiveness and accuracy of test data. At the same time, due to the poor adaptability of the antenna fixing structure, it can usually only fix antennas of a specific size. When testing antennas of different specifications, the fixing components need to be replaced, which is cumbersome and time-consuming, resulting in low testing efficiency. Utility Model Content

[0006] This invention proposes an automatic testing device for automotive radar waveguide antennas, which can quickly fix antennas of different specifications, improve test adaptability, and automatically and accurately adjust the distance between the antenna and the signal generator, thereby improving test efficiency and data comprehensiveness, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an automatic testing device for automotive radar waveguide antennas, comprising a support platform, a signal generator fixedly installed on the top right side of the support platform, a sliding assembly fixedly connected to the top left side of the support platform, a fixed platform slidably connected to the top of the sliding assembly, and an antenna under test fixedly installed on the top of the fixed platform.

[0008] The sliding assembly includes a U-shaped bracket, which is fixedly connected to the top left side of the support platform. A drive motor is fixedly connected to the middle left side of the U-shaped bracket. The output shaft of the drive motor passes through the inner side of the U-shaped bracket and is fixedly connected to a transmission screw. A connecting slide is threaded onto the outer surface of the transmission screw. The upper surface of the connecting slide is fixedly connected to the lower surface of the fixed platform. A data analysis terminal is fixedly installed on the front side of the fixed platform. A signal receiver is fixedly installed on the top of the data analysis terminal. The antenna under test is electrically connected to the terminal of the signal receiver via a cable.

[0009] Preferably, the front and rear sides of the connecting slide are slidably connected with sliding guide rods that run through it from left to right, and the two sliding guide rods are respectively fixedly connected to the front and rear sides of the inner side of the U-shaped bracket.

[0010] Preferably, the fixed platform has a connecting groove inside, and four guide oblique grooves are arranged in a circular array on the upper surface of the connecting groove, with the top of the guide oblique grooves extending through to the upper surface of the fixed platform.

[0011] Preferably, a knob is rotatably connected to the right side of the fixed platform, and the left end of the knob extends through the interior of the connecting groove and is fixedly connected to a bidirectional screw. Threaded sliding plates are threadedly connected to both the left and right sides of the outer surface of the bidirectional screw, and the outer surface of the threaded sliding plates is slidably connected to the inner surface of the connecting groove.

[0012] Preferably, the upper surface of the threaded slide plate is provided with a limiting groove, and the inner surface of the limiting groove is slidably connected to both the front and rear sides of the limiting groove. The top of the limiting slider is fixedly connected to a connecting slide post.

[0013] Preferably, the lower outer surface of the connecting slide column is slidably connected to the inner surface of the guide inclined slide groove, and a rubber pad is fixedly connected to the upper outer surface of the connecting slide column extending to the top of the fixed platform.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. In this utility model, the automatic and precise adjustment of the distance between the antenna and the signal generator is achieved through the cooperation of the drive motor, transmission screw, connecting slide plate, and sliding guide rod of the sliding component. When the drive motor is working, it drives the transmission screw to rotate, causing the connecting slide plate, which is threaded onto the transmission screw, to move left and right along the sliding guide rod. This, in turn, drives the fixed platform and the antenna under test on the top to move synchronously, thereby changing the distance between the antenna and the signal generator. The sliding guide rod ensures the stability of the movement of the connecting slide plate. The precise control of the drive motor enables automatic and continuous adjustment of the distance, which is more accurate than manual adjustment. It can accurately simulate signal transmission scenarios at different distances, making the test data more comprehensive and accurate, and solving the problems of low distance adjustment accuracy and insufficient automation in existing devices.

[0016] 2. In this utility model, the rapid clamping and fixing of antennas of different specifications is achieved through the cooperation of the bidirectional screw, threaded sliding plate, limiting slider, connecting sliding column, and guide inclined slide groove within the fixing platform. The principle is as follows: After placing the antenna at the center of the top of the fixing platform, rotating the knob drives the bidirectional screw to rotate, causing the two threaded sliding plates on the left and right to move towards each other within the connecting slide groove. As the threaded sliding plates move, the limiting slider slides laterally within the limiting slide groove, driving the connecting sliding column to move synchronously. Simultaneously, the connecting sliding column slides along the guide inclined slide groove below. Because the guide inclined slide groove is inclined, the four connecting sliding columns gradually move towards the center while moving laterally, ultimately forming a stable clamp on the bottom outer wall of the antenna through the rubber pad. This structure can adapt to antennas of various sizes without replacing any parts, greatly improving the versatility and testing efficiency of the device, and solving the problem of poor adaptability of existing fixing structures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the automatic testing device for automotive radar waveguide antennas according to this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the sliding component of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the fixing platform of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the fixing platform of this utility model.

[0021] Legend: 1. Support platform; 2. Signal generator; 3. Sliding assembly; 31. U-shaped bracket; 32. Drive motor; 33. Transmission screw; 34. Connecting slide plate; 35. Sliding guide rod; 4. Fixed platform; 41. Data analysis terminal; 42. Signal receiver; 43. Connecting slide groove; 44. Guide oblique slide groove; 45. Knob; 46. Bidirectional screw; 47. Threaded slide plate; 48. Limiting slide groove; 49. Limiting slider; 410. Connecting slide column; 411. Rubber pad; 5. Antenna under test. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a technical solution: it includes a support platform 1, a signal generator 2 is fixedly installed on the top right side of the support platform 1, a sliding component 3 is fixedly connected to the top left side of the support platform 1, a fixed platform 4 is slidably connected to the top of the sliding component 3, and an antenna under test 5 is fixedly installed on the top of the fixed platform 4. The sliding component 3 includes a U-shaped bracket 31, which is fixedly connected to the top left side of the support platform 1. A drive motor 32 is fixedly connected to the middle left side of the U-shaped bracket 31. The output shaft of the drive motor 32 passes through the inner side of the U-shaped bracket 31 and is fixedly connected to a transmission screw 33. A connecting slide plate 34 is threadedly connected to the outer surface of the transmission screw 33. The upper surface of the connecting slide plate 34 is fixedly connected to the lower surface of the fixed platform 4. Sliding guide rods 35 that pass through the left and right sides are slidably connected to both the front and rear sides of the connecting slide plate 34. The two sliding guide rods 35 are respectively fixedly connected to the front and rear sides of the inner side of the U-shaped bracket 31.

[0025] The overall effect of Embodiment 1 is as follows: the drive motor 32 provides power, and in conjunction with the threaded transmission of the transmission screw 33 and the connecting slide plate 34, the fixed platform 4 and the antenna under test 5 are moved automatically. The sliding guide rod 35 guides and limits the movement of the connecting slide plate 34, effectively preventing the connecting slide plate 34 from deviating or shaking during the movement, ensuring that the antenna under test 5 can move stably along a straight line, thereby accurately adjusting the distance between it and the signal generator 2, and meeting the precise control requirements of distance parameters under different test scenarios.

[0026] Example 2: As Figure 3 and Figure 4 As shown, this utility model provides a technical solution: a data analysis terminal 41 is fixedly installed on the front side of the fixed platform 4, and a signal receiver 42 is fixedly installed on the top of the data analysis terminal 41. The antenna under test 5 is electrically connected to the terminal of the signal receiver 42 via a cable. A connecting groove 43 is provided inside the fixed platform 4. Four guide oblique grooves 44 are arranged in a ring array on the upper surface of the connecting groove 43. The top of the guide oblique grooves 44 extends through to the upper surface of the fixed platform 4. A knob 45 is rotatably connected to the right side of the fixed platform 4. The left end of the knob 45 extends through to the inside of the connecting groove 43 and is fixedly connected. There is a bidirectional screw 46, and threaded sliding plates 47 are threadedly connected to both the left and right sides of the outer surface of the bidirectional screw 46. The outer surface of the threaded sliding plate 47 is slidably connected to the inner surface of the connecting groove 43. A limiting groove 48 is opened on the upper surface of the threaded sliding plate 47. A limiting slider 49 is slidably connected to both the front and rear sides of the inner surface of the limiting groove 48. A connecting slide post 410 is fixedly connected to the top of the limiting slider 49. The lower part of the outer surface of the connecting slide post 410 is slidably connected to the inner surface of the guide inclined groove 44. The upper part of the outer surface of the connecting slide post 410 extends to the top of the fixed platform 4 and is fixedly connected to a rubber pad 411.

[0027] The effect achieved by the entire embodiment 2 is as follows: the knob 45 drives the bidirectional screw 46 to rotate, causing the two threaded slide plates 47 on the left and right to move towards or away from each other in the connecting slide groove 43. Then, the limiting slider 49 and the limiting slide groove 48 cooperate to drive the connecting slide column 410 to move. Combined with the inclined guiding effect of the guide slide groove 44, the four connecting slide columns 410 are simultaneously moved towards the center or opened outward. Thus, the rubber pad 411 is used to stably clamp or loosen the antennas 5 of different specifications. The rubber pad 411 can not only increase the friction between the antenna and improve the fixation stability, but also avoid scratching damage to the antenna surface. At the same time, the integrated fixing structure does not require replacement of parts, which significantly simplifies the operation process and improves the work efficiency of the test preparation stage.

[0028] The working principle of the entire device is as follows: When testing the automotive radar waveguide antenna, the antenna under test 5 is first placed at the top center of the fixed platform 4. The knob 45 is rotated, which drives the bidirectional screw 46 to rotate in the connecting slide groove 43. Since the threads on the left and right sides of the bidirectional screw 46 are opposite, its rotation will cause the two threaded slide plates 47 on the left and right sides to move towards each other along the connecting slide groove 43. During the movement of the threaded slide plates 47, the limiting slider 49 slides in the limiting slide groove 48, which in turn drives the connecting slide column 410 to move synchronously. At this time, the bottom of the connecting slide column 410 slides along the guide inclined slide groove 44. Because the guide inclined slide groove 44 is inclined, the connecting slide column 410 gradually moves towards the center while moving laterally. Finally, the rubber pads 411 on the top of the four connecting slide columns 410 clamp the bottom outer wall of the antenna under test 5 together, thus completing the fixation of the antenna.

[0029] After fixing, the signal generator 2 and the data analysis terminal 41 are started. The signal generator 2 emits radar signals with preset frequency and power. The antenna under test 5 receives the signal and transmits it to the signal receiver 42 through a cable. The signal receiver 42 converts the signal into an electrical signal and sends it to the data analysis terminal 41 for preliminary processing. If it is necessary to simulate the signal transmission at different distances, the drive motor 32 can be controlled to work. The output shaft of the drive motor 32 drives the transmission screw 33 to rotate, so that the connecting slide plate 34 threaded on the transmission screw 33 moves left and right along the sliding guide rod 35. The connecting slide plate 34 drives the fixing platform 4 and the antenna under test 5 to move synchronously, thereby changing the distance between the antenna under test 5 and the signal generator 2.

[0030] During the movement, the sliding guide rod 35 ensures that the connecting slide plate 34 always moves smoothly along a straight line, avoiding the antenna under test 5 from shifting and affecting the signal reception accuracy. Signal data at different distances are continuously transmitted to the data analysis terminal 41 via the signal receiver 42. The data analysis terminal 41 analyzes and processes the data, calculates the signal transmission efficiency, directivity and other performance parameters of the antenna under test 5 at different distances, compares them with preset standards, and finally generates a test report to complete the automated testing of the automotive radar waveguide antenna.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automatic testing device for automotive radar waveguide antennas, characterized in that: Includes a support platform (1), a signal generator (2) is fixedly installed on the top right side of the support platform (1), a sliding component (3) is fixedly connected to the top left side of the support platform (1), a fixed platform (4) is slidably connected to the top of the sliding component (3), and an antenna to be tested (5) is fixedly installed on the top of the fixed platform (4). The sliding assembly (3) includes a U-shaped bracket (31), which is fixedly connected to the top left side of the support platform (1). A drive motor (32) is fixedly connected to the middle left side of the U-shaped bracket (31). The output shaft of the drive motor (32) passes through the inner side of the U-shaped bracket (31) and is fixedly connected to a transmission screw (33). A connecting slide plate (34) is threadedly connected to the outer surface of the transmission screw (33). The upper surface of the connecting slide plate (34) is fixedly connected to the lower surface of the fixed platform (4). A data analysis terminal (41) is fixedly installed on the front side of the fixed platform (4). A signal receiver (42) is fixedly installed on the top of the data analysis terminal (41). The antenna under test (5) is electrically connected to the terminal of the signal receiver (42) through a cable.

2. The automatic testing device for automotive radar waveguide antennas according to claim 1, characterized in that: The front and rear sides of the connecting slide plate (34) are slidably connected with sliding guide rods (35) that run through the left and right sides. The two sliding guide rods (35) are respectively fixedly connected to the front and rear sides of the inner side of the U-shaped bracket (31).

3. The automatic testing device for automotive radar waveguide antennas according to claim 1, characterized in that: The fixed platform (4) has a connecting groove (43) inside. The upper surface of the connecting groove (43) has four guide oblique grooves (44) arranged in a ring array. The top of the guide oblique grooves (44) extends through to the upper surface of the fixed platform (4).

4. The automatic testing device for automotive radar waveguide antennas according to claim 3, characterized in that: A knob (45) is rotatably connected to the right side of the fixed platform (4). The left end of the knob (45) extends into the interior of the connecting groove (43) and is fixedly connected to a bidirectional screw (46). Threaded sliding plates (47) are threadedly connected to both the left and right sides of the outer surface of the bidirectional screw (46). The outer surface of the threaded sliding plate (47) is slidably connected to the inner surface of the connecting groove (43).

5. The automatic testing device for automotive radar waveguide antennas according to claim 4, characterized in that: The upper surface of the threaded slide plate (47) is provided with a limiting groove (48), and the front and rear sides of the inner surface of the limiting groove (48) are slidably connected to limiting sliders (49), and the top of the limiting sliders (49) is fixedly connected to a connecting slide post (410).

6. The automatic testing device for automotive radar waveguide antennas according to claim 5, characterized in that: The outer surface of the connecting slide column (410) is slidably connected to the inner surface of the guide inclined slide groove (44), and the outer surface of the connecting slide column (410) extends through to the top of the fixed platform (4) and is fixedly connected with a rubber pad (411).

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