A millimeter wave radar assembly calibration test device

Abstract

The application discloses a kind of millimeter wave radar assembly calibration test devices, belong to radar calibration technical field, including: including: calibration test chassis, the calibration test chassis top two ends are respectively provided with corner reflector assembly and calibration adjustment assembly, the calibration test chassis top between the corner reflector assembly and the calibration adjustment assembly is provided with corner wave-absorbing structure, the calibration adjustment assembly top is provided with positioning assembly, the corner reflector assembly, corner wave-absorbing structure and calibration adjustment assembly are closed by calibration test upper rack Setting, the calibration test upper rack is provided with operating port in calibration adjustment assembly and positioning assembly corresponding position;The positioning assembly includes: positioning machine base plate, the positioning machine base plate is set on the calibration adjustment assembly top, the positioning machine base plate top is close to one end and is provided with calibration workbench, one side of the calibration workbench is provided with calibration equipment assembly, and the calibration equipment assembly is set on the positioning machine base plate top.

Description

Technical Field

[0001] This invention discloses a millimeter-wave radar calibration assembly testing device, belonging to the field of radar calibration technology. Background Technology

[0002] With the development and popularization of autonomous vehicles, they are becoming increasingly intelligent and widely used. Both driver assistance and autonomous driving functions require various onboard radars for detection and perception to achieve their respective functions.

[0003] Currently, an increasing number of automakers are equipping their vehicles with forward-facing millimeter-wave radar and corner radar. To ensure the performance and quality of automotive electronics, various millimeter-wave radars need to be tested and calibrated.

[0004] When measuring the gain of the aforementioned millimeter-wave radar in an anechoic chamber, it is usually necessary to manually adjust the position of the corner reflector repeatedly, which leads to time-consuming and labor-intensive radar calibration and debugging work, high equipment costs, and demanding requirements for operators. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of high cost and low efficiency in the calibration and testing of existing millimeter-wave radar assemblies, and to propose a calibration and testing device for millimeter-wave radar assemblies.

[0006] The problem to be solved by this utility model is achieved by the following technical solution: A millimeter-wave radar assembly calibration and testing device includes: a calibration and testing base frame, with a corner reflector assembly and a calibration adjustment assembly respectively disposed at both ends of the top of the calibration and testing base frame, a corner cone absorbing structure disposed on the top of the calibration and testing base frame between the corner reflector assembly and the calibration adjustment assembly, and a positioning assembly disposed on the top of the calibration adjustment assembly; the corner reflector assembly, the corner cone absorbing structure and the calibration adjustment assembly are enclosed by a calibration and testing upper frame, and the calibration and testing upper frame is provided with operation ports at corresponding positions of the calibration adjustment assembly and the positioning assembly; wherein, the positioning assembly includes: a positioning base plate, the positioning base plate is disposed on the top of the calibration adjustment assembly, a calibration workbench is disposed near one end of the top of the positioning base plate, a calibration equipment assembly is disposed on one side of the calibration workbench, and the calibration equipment assembly is disposed on the top of the positioning base plate.

[0007] Further, the calibration adjustment assembly includes: a calibration adjustment base plate, which extends along a first preset direction, and a dovetail column is provided at one end of the top of the calibration adjustment base plate, the dovetail column extending along the preset direction; a linear drive device, which is located at the other end of the top of the calibration adjustment base plate, the moving direction of the actuator of the linear drive device being the same as the first preset direction; and a corner platform, one bottom end of which is connected to the actuator of the linear drive device, and the other bottom end of which is provided with a dovetail groove, the dovetail groove cooperating with the dovetail column; wherein, when the actuator drives the corner platform, the dovetail groove can move along the dovetail column.

[0008] Furthermore, the positioning assembly also includes a calibration blocking assembly, which is disposed on the top of the positioning base plate and on one side of the calibration equipment assembly.

[0009] Further, the calibration workbench includes: two first calibration support frames, the horizontal sides of which are parallel to each other on the top of the positioning machine base plate; a workbench plate, which is hinged to the vertical ends of the two first calibration support frames respectively; an adjusting electric cylinder, one end of which is hinged to one side of the workbench plate and the other end of which is hinged to the top of the positioning machine base plate; a limiting strip, which is disposed on the side of the workbench plate away from the two first calibration support frames, and is used to limit the horizontal movement of the millimeter-wave radar assembly under test on the workbench plate; and a limiting post, which is disposed on the side of the workbench plate away from the two first calibration support frames, and is used to limit the horizontal movement of the millimeter-wave radar assembly under test on the workbench plate.

[0010] Furthermore, the calibration equipment assembly includes: a calibration equipment bracket, on which a laser support and a code reader support are respectively provided. The laser support is equipped with a laser device, and the beam emitted by the laser device can be directed onto the corner reflector of the corner reflector assembly. The code reader support is equipped with a code reader, and the code reader can identify the identification code of the millimeter-wave radar assembly under test.

[0011] Further, the calibration shielding assembly includes: a calibration shielding bracket; a rotary cylinder disposed on the top of the calibration shielding bracket; and an L-shaped shielding plate, one end of which is connected to the side of the actuating end of the rotary cylinder; wherein, the rotation of the actuating end of the rotary cylinder drives the L-shaped shielding plate to rotate, the L-shaped shielding plate having a shielding position that prevents the laser beam emitted by the laser device from hitting the corner reflector of the corner reflector assembly, and the L-shaped shielding plate having an avoidance position that allows the laser beam emitted by the laser device to hit the corner reflector of the corner reflector assembly.

[0012] Furthermore, the cone-shaped absorbing structure includes several cone-shaped absorbing blocks, which are disposed on the top of the calibration test base.

[0013] The advantages of this utility model compared to existing technologies are as follows: This utility model discloses a millimeter-wave radar assembly calibration and testing device. By placing the millimeter-wave radar assembly to be tested on a calibration workbench, the calibration equipment assembly and the corner reflector assembly work together to perform calibration testing on the millimeter-wave radar assembly to be tested. No debugging is required, and the cost is low. As long as the positional accuracy of the corner reflector assembly is ensured, no maintenance is required later. The illumination position of the corner reflector can be adjusted by the calibration adjustment assembly, ensuring the smooth progress of the calibration process while meeting the needs of mass production. Attached Figure Description

[0014] Figure 1 This is an isometric side view of the first embodiment of the millimeter-wave radar assembly calibration and testing device of this utility model.

[0015] Figure 2 This is an isometric side view of the second embodiment of the millimeter-wave radar assembly calibration and testing device of this utility model.

[0016] Figure 3 This is an isometric side view of the first embodiment of the calibration and adjustment assembly in the millimeter-wave radar assembly calibration and testing device of this utility model.

[0017] Figure 4 This is an isometric side view of the first embodiment of the positioning assembly in the millimeter-wave radar assembly calibration and testing device of this utility model.

[0018] Figure 5 This is an isometric side view of the second embodiment of the positioning assembly in the millimeter-wave radar assembly calibration and testing device of this utility model.

[0019] Figure 6 This is an isometric side view of the third embodiment of the positioning assembly in the millimeter-wave radar assembly calibration and testing device of this utility model.

[0020] Figure 7This is an isometric side view of the fourth embodiment of the positioning assembly in the millimeter-wave radar assembly calibration and testing device of this utility model.

[0021] Figure 8 This is an isometric side view of the fifth embodiment of the positioning assembly in the millimeter-wave radar assembly calibration and testing device of this utility model.

[0022] Figure 9 This is an isometric side view of the sixth embodiment of the positioning assembly in the millimeter-wave radar assembly calibration and testing device of this utility model.

[0023] Figure 10 This is an isometric side view of the third embodiment of the millimeter-wave radar assembly calibration and testing device of this utility model.

[0024] Among them, 1-calibration test base frame, 2-calibration test upper frame, 3-corner reflector assembly, 4-corner cone absorbing structure, 5-positioning assembly, 6-calibration adjustment assembly, 7-millimeter-wave radar assembly under test, 21-operation port, 31-corner reflector, 41-corner cone absorbing block, 51-calibration shielding assembly, 52-calibration equipment assembly, 53-calibration workbench, 54-positioning base plate, 511-calibration shielding bracket, 512-rotary cylinder, 513- L-shaped baffle, 521-calibration equipment bracket, 522-laser support, 523-laser equipment, 524-code reader, 525-code reader support, 531-workbench, 532-first calibration support frame, 533-limit bar, 534-adjusting electric cylinder, 536-limit column, 61-calibration adjustment base plate, 62-dovetail groove, 63-actuator driven angle platform, 64-dovetail column, 65-linear drive device. Detailed Implementation

[0025] The following is based on the appendix Figure 1-10 Further explanation of this utility model: The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figure 1 and 2 As shown, the first embodiment of this utility model provides a millimeter-wave radar assembly calibration and testing device based on the prior art, including: a calibration and testing base frame 1, with a corner reflector assembly 3 and a calibration adjustment assembly 6 respectively installed at both ends of the top of the calibration and testing base frame 1, a corner cone absorbing structure 5 provided on the top of the calibration and testing base frame 1 between the corner reflector assembly 3 and the calibration adjustment assembly 6, and a positioning assembly 5 provided on the top of the calibration adjustment assembly 6, the corner reflector assembly 3, the corner cone absorbing structure 4 and the calibration adjustment assembly 6 being enclosed by a calibration and testing upper frame 2, and the calibration and testing upper frame 2 having operation ports 21 at corresponding positions of the calibration adjustment assembly 6 and the positioning assembly 5; wherein, the positioning assembly 5 includes: a positioning base plate 54, the positioning base plate 54 being disposed on the top of the calibration adjustment assembly 6, a calibration workbench 53 being disposed near one end of the top of the positioning base plate 54, a calibration equipment assembly 52 being disposed on one side of the calibration workbench 53, and the calibration equipment assembly 52 being disposed on the top of the positioning base plate 54.

[0029] In this embodiment, the millimeter-wave radar assembly 7 to be tested is placed on the calibration workbench 53. The calibration equipment assembly 52 and the corner reflector assembly 3 work together to calibrate the millimeter-wave radar assembly 7. No debugging is required, and the cost is low. As long as the positional accuracy of the corner reflector assembly 3 is ensured, no maintenance is required later. The illumination position of the corner reflector 3 can be adjusted by the calibration adjustment assembly 6, which ensures that the calibration process is carried out smoothly and meets the needs of mass production.

[0030] like Figures 3-10As shown, the calibration and adjustment assembly 6 includes: a calibration and adjustment base plate 61, which extends along a first preset direction, and a dovetail column 64 is provided at one end of the top of the calibration and adjustment base plate 61, extending along the preset direction; a linear drive device 65, which is located at the other end of the top of the calibration and adjustment base plate 61, and the moving direction of the actuator end of the linear drive device 65 is the same as the first preset direction; and a corner platform 63, one end of which is connected to the actuator end of the linear drive device 65, and the other end of which is provided with a dovetail groove 62, which cooperates with the dovetail column 64; wherein, when the actuator end drives the corner platform 63, the dovetail groove 62 can move along the dovetail column 64. The calibration and adjustment base plate 61, which extends along the first preset direction, provides a stable foundation support for the entire assembly, and its shape and setting direction are conducive to the reasonable layout of subsequent components. The dovetail column 64 at the top extends along a preset direction and cooperates with the dovetail groove 62 at the bottom of the corner platform 63. This dovetail structure design can not only accurately guide the movement direction of the corner platform 63 and ensure that it can only move along the preset direction, but also the dovetail structure has good stability and reliability when subjected to large pressure and lateral force, which can effectively prevent the corner platform 63 from deviating or shaking during movement.

[0031] The positioning assembly 5 also includes a calibration shielding assembly 51, which is located on the top of the positioning base plate 54 and on one side of the calibration equipment assembly 52. ​​The calibration shielding assembly 51, positioned on top of the positioning base plate 54 and on one side of the calibration equipment assembly 52, serves to protect the calibration equipment assembly 52. ​​In complex working environments, factors such as dust, foreign objects, and light interference may exist. The calibration shielding assembly 51 can block these adverse factors from affecting the calibration equipment assembly 52, ensuring that the calibration equipment assembly 52 operates in a stable and suitable environment, thereby improving the accuracy and reliability of calibration. Furthermore, in certain specific calibration processes, the calibration shielding assembly 51 may also play an auxiliary calibration role, for example, by blocking part of the light or signal, helping the calibration equipment assembly better acquire the required data and optimizing the calibration process.

[0032] The calibration workbench 53 includes: two first calibration support frames 532, the horizontal sides of which are parallel to each other on the top of the positioning base plate 54; a workbench plate 531, which is hinged to the vertical ends of the two first calibration support frames 532 respectively; an adjusting electric cylinder 534, one end of which is hinged to one side of the workbench plate 531 and the other end of which is hinged to the top of the positioning base plate 54; a limiting strip 533, which is located on the side of the workbench plate 531 away from the two first calibration support frames 532, and is used to limit the horizontal movement of the millimeter-wave radar assembly 7 under test on the workbench plate 531; and a limiting post 536, which is located on the side of the workbench plate 531 away from the two first calibration support frames 532, and is used to limit the horizontal movement of the millimeter-wave radar assembly 7 under test on the workbench plate 531.

[0033] The calibration equipment assembly 52 includes: a calibration equipment bracket 521, on which a laser support 522 and a code reader support 525 are respectively mounted. The laser support 522 is equipped with a laser device 523, whose beam can be directed onto the corner reflector 31 of the corner reflector assembly 3. The code reader support 525 is equipped with a code reader 524, which can identify the identification code of the millimeter-wave radar assembly 7 under test. The laser device 523 and the code reader 524 are integrated into the same calibration equipment assembly 52, enabling collaborative operation of different functional devices. This reduces the complexity of connections between devices and signal interference, improves the stability and reliability of the entire calibration system, and facilitates subsequent data analysis and processing, thereby improving the quality and efficiency of millimeter-wave radar calibration. The barcode reader 524 automatically scans the barcode, the equipment is powered on and communicates, the laser device 523 emits a laser, the millimeter-wave radar assembly 7 under test is calibrated by receiving millimeter waves, and the product function is tested after calibration.

[0034] The calibration shielding assembly 51 includes: a calibration shielding bracket 511; a rotary cylinder 512, which is disposed on the top of the calibration shielding bracket 511; and an L-shaped shielding plate 513, one end of which is connected to the side of the actuating end of the rotary cylinder 512. The rotary cylinder 512 rotates to drive the L-shaped shielding plate 513 to rotate. The L-shaped shielding plate 513 has a shielding position that prevents the light beam emitted by the laser device 523 from hitting the corner reflector 31 of the corner reflector assembly 3, and an avoidance position that allows the light beam emitted by the laser device 523 to hit the corner reflector 31 of the corner reflector assembly 3. A rotary cylinder 512 is mounted on top of the calibration shielding bracket 511, with its actuator connected to one side of an L-shaped shielding plate 513. This design allows the L-shaped shielding plate 513 to precisely switch between a shielding position and an avoidance position under the drive of the rotary cylinder 512. When it is necessary to shield the beam emitted by the laser device 523, the rotary cylinder 512 drives the L-shaped shielding plate 513 to rotate to the shielding position, accurately blocking the beam from reaching the corner reflector 31 of the corner reflector assembly 3. This provides precise light control for specific calibration testing procedures, meeting the stringent requirements for light shielding in different testing scenarios. Conversely, when normal laser reflection-based calibration is required, the L-shaped shielding plate 513 can be quickly rotated to the avoidance position without affecting the normal operation of the laser device 523. This flexible and convenient operation greatly improves the controllability of the calibration work.

[0035] The pyramidal absorbing structure 4 includes several pyramidal absorbing blocks 41, which are positioned on top of the calibration test base 1. Placing the pyramidal absorbing structure 4 on top of the calibration test base 1 creates a relatively clean electromagnetic environment for the calibration test of the millimeter-wave radar. In actual testing, various electromagnetic signal sources exist in the external environment, such as communication base station signals and radiation from other electronic devices, which may interfere with the calibration test. The pyramidal absorbing structure 4 can effectively absorb these stray signals, reduce electromagnetic noise in the test environment, and provide a test environment closer to the ideal state for the millimeter-wave radar. This helps engineers more accurately evaluate the performance of the millimeter-wave radar, thereby improving the quality and efficiency of the entire calibration test work.

[0036] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. A millimeter-wave radar assembly calibration and testing device, characterized in that, include: A calibration test base (1) is provided with a corner reflector assembly (3) and a calibration adjustment assembly (6) at its top two ends respectively. A corner cone absorbing structure (4) is provided on the top of the calibration test base (1) between the corner reflector assembly (3) and the calibration adjustment assembly (6). A positioning assembly (5) is provided on the top of the calibration adjustment assembly (6). The corner reflector assembly (3), the corner cone absorbing structure (4) and the calibration adjustment assembly (6) are enclosed by a calibration test upper frame (2). An operation port (21) is provided at the corresponding position of the calibration adjustment assembly (6) and the positioning assembly (5) in the calibration test upper frame (2). The positioning assembly (5) includes a positioning base plate (54), which is located on the top of the calibration adjustment assembly (6). A calibration workbench (53) is located near one end of the top of the positioning base plate (54), and a calibration equipment assembly (52) is located on one side of the calibration workbench (53). The calibration equipment assembly (52) is located on the top of the positioning base plate (54).

2. The millimeter-wave radar assembly calibration and testing device according to claim 1, characterized in that, The calibration adjustment assembly (6) includes: A calibration adjustment base plate (61) is provided, which extends along a first preset direction. A dovetail column (64) is provided at the top of the calibration adjustment base plate (61) near one end, and the dovetail column (64) extends along the preset direction. A linear drive device (65) is disposed on the top of the calibration adjustment base plate (61) near the other end, and the moving direction of the execution end of the linear drive device (65) is the same as the first preset direction. An angle platform (63) is provided with a dovetail groove (62) at one end of its bottom connected to the execution end of the linear drive device (65), and the dovetail groove (62) cooperates with the dovetail column (64). When the actuator drives the corner stage (63), the dovetail groove (62) can move along the dovetail column (64).

3. The millimeter-wave radar assembly calibration and testing device according to claim 1 or 2, characterized in that, The positioning assembly (5) further includes a calibration shielding assembly (51), which is located on the top of the positioning base plate (54) and is located on one side of the calibration equipment assembly (52).

4. The millimeter-wave radar assembly calibration and testing device according to claim 3, characterized in that, The calibration workbench (53) includes: Two first calibration support frames (532) are arranged parallel to each other on the top of the positioning base plate (54); The workbench (531) is hinged to the vertical ends of the two first calibration support frames (532); An adjusting electric cylinder (534) is provided, with one end of the adjusting electric cylinder (534) hinged to one side of the worktable plate (531) and the other end of the adjusting electric cylinder (534) hinged to the top of the positioning base plate (54). A limiting strip (533) is provided on the side of the worktable (531) away from the two first calibration support frames (532), and the limiting strip (533) is used to limit the horizontal movement of the millimeter-wave radar assembly (7) under test on the worktable (531); A limiting post (536) is provided on the side of the worktable (531) away from the two first calibration support frames (532), and the limiting post (536) is used to limit the horizontal movement of the millimeter-wave radar assembly (7) under test on the worktable (531).

5. The millimeter-wave radar assembly calibration and testing device according to claim 4, characterized in that, The calibration equipment assembly (52) includes: a calibration equipment bracket (521), on which a laser support (522) and a code reader support (525) are respectively provided. The laser support (522) is provided with a laser device (523), and the beam emitted by the laser device (523) can hit the corner reflector (31) of the corner reflector assembly (3). The code reader support (525) is provided with a code reader (524), and the code reader (524) can identify the identification code of the millimeter-wave radar assembly (7) to be tested.

6. The millimeter-wave radar assembly calibration and testing device according to claim 5, characterized in that, The calibration occlusion assembly (51) includes: Calibrate the shielding bracket (511); A rotary cylinder (512) is disposed on top of the calibration shielding bracket (511); L-shaped baffle plate (513), one end of which is connected to the side of the actuating end of the rotary cylinder (512); The rotating end of the rotary cylinder (512) rotates to drive the L-shaped shield (513) to rotate. The L-shaped shield (513) has a shielding position that prevents the light beam emitted by the laser device (523) from hitting the corner reflector (31) of the corner reflector assembly (3). The L-shaped shield (513) also has a clearance position that allows the light beam emitted by the laser device (523) to hit the corner reflector (31) of the corner reflector assembly (3).

7. The millimeter-wave radar assembly calibration and testing device according to claim 1, characterized in that, The cone-shaped absorbing structure (4) includes several cone-shaped absorbing blocks (41), which are arranged on the top of the calibration test base (1).

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