Radar sensor test equipment with multiple test functions

Abstract

The invention discloses radar sensor testing equipment with multiple testing functions, and relates to the technical field of intelligent sensor testing. Comprising an outer case, a sliding rail, an electric sliding block, a positioning support, a driving assembly and an electrifying clamping unit, initial section centering clamping is conducted on the two ends of a radar sensor through side clamping pieces, meanwhile, initial section clamping positions are located in the areas, close to the bottom, of the two ends of the sensor, and a radar signal emitting surface can be effectively avoided; the clamping effect is guaranteed, and meanwhile interference to radar signals is avoided. On the basis of initial section centered positioning, the hydraulic box continuously moves forwards, sliding of the piston rod is converted into downward displacement of the upper electrifying clamping piece, the upper electrifying clamping piece and the lower electrifying clamping piece achieve automatic alignment and clamping of a wiring end, automatic wiring is completed, two sections of the wiring end are clamped, electric connection of the sensor in the testing process is stable and reliable, and the testing efficiency is improved. Meanwhile, the overall posture keeping capacity is further enhanced, the deviation risk under the vibration working condition is reduced, and the detection stability is improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent sensor testing technology, specifically a radar sensor testing device with multiple testing functions. Background Technology

[0002] Radar sensor testing equipment is a type of experimental and testing device specifically designed to test the performance of radar sensors. By testing parameters such as distance detection, angle recognition, micro-motion sensing, response speed, and environmental adaptability, the testing equipment can comprehensively evaluate the working performance of radar sensors under actual application conditions, ensuring that the products meet the predetermined sensitivity, reliability, and stability requirements before leaving the factory.

[0003] During radar sensor testing, equipment operation is often accompanied by vibration, making the sensor prone to attitude deviation. Existing radar sensor testing equipment generally lacks a stable and reliable attitude control structure. Although some devices use clamping methods to fix the sensor, traditional clamping components often act directly on the sensor body, shielding or interfering with the radar signal transmission area, making it difficult to balance positioning accuracy and signal integrity. Furthermore, traditional structures often have spatial conflicts between the clamping position and the wiring terminals, making wiring inconvenient, resulting in unstable power supply, poor test result repeatability, and failing to meet the requirements of precision testing. Summary of the Invention

[0004] The purpose of this invention is to provide a radar sensor testing device with multiple testing functions to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a radar sensor testing device with multiple testing functions, including an outer casing, a slide rail installed inside the casing, an electric slider installed on the slide rail, a positioning bracket installed on the electric slider, a drive assembly installed on the positioning bracket, and energized clamping units symmetrically installed on the drive assembly; The energized clamping unit includes a lower stabilizing member, a connecting rod mounted on the lower stabilizing member, an upper stabilizing member mounted on the connecting rod, and the lower stabilizing member mounted on the drive assembly.

[0006] The external chassis houses several test units used to test various parameters of the radar sensor. The external chassis also contains a control system for controlling the entire testing equipment.

[0007] Furthermore, the upper stabilizing component includes a hydraulic tank, which is mounted on the connecting rod. A side clamp is slidably mounted on the hydraulic tank, and a sliding detection rod is slidably mounted inside the hydraulic tank. An upper energized clamp is mounted at the bottom of the sliding detection rod.

[0008] The upper and lower energized clips are connected to an external power source via wires.

[0009] Furthermore, the hydraulic tank is equipped with an expansion chamber and a compression chamber, which are connected to the expansion chamber. The side clamp is slidably connected to the expansion chamber, and the sliding detection rod is slidably installed in the compression chamber.

[0010] The extrusion chamber and expansion chamber are filled with hydraulic oil.

[0011] Furthermore, the side clamp includes a piston rod, which is slidably mounted in the expansion chamber. A clamping plate is mounted on the piston rod, and a return spring is installed between the clamping plate and the hydraulic chamber.

[0012] The drive assembly first drives the two sets of upper stabilizing members to move closer to each other, performing an initial displacement. The side clamps on them gradually come into contact with both ends of the radar sensor, and the clamping plates push the radar sensor inward from both sides to achieve the centering and positioning of the radar sensor, thus achieving the purpose of initial clamping.

[0013] After both clamping plates contact the radar sensor and complete centering, the initial displacement ends. The drive assembly then continues to drive the two sets of energized clamping units closer together, initiating the second displacement. At this point, the clamping plates stop moving due to contact with the sensor; only the hydraulic tank continues to move forward, creating relative displacement between the clamping plates and the hydraulic tank. Correspondingly, the piston rod connected to the clamping plates slides relative to each other within the expansion chamber. The return spring is compressed and begins to apply preload to both ends of the sensor. As the piston head of the piston rod moves, it squeezes the hydraulic oil within the expansion chamber, pushing the hydraulic oil into the compression chamber and increasing the pressure within it. The pressurized hydraulic oil pushes the sliding detection rod downwards, thereby causing the upper energized clamping plate to move downwards.

[0014] Simultaneously, the support plate slides along the guide towards the bottom of the radar sensor, supporting its lower end, while the lower energized clamp also moves synchronously to below the terminal. As the upper energized clamp moves downward, the upper and lower clamps converge, reliably clamping and fixing the radar sensor's terminal, achieving a two-stage clamping effect. This two-stage displacement ends, thus realizing double-stage clamping and automatic wiring of the terminal, improving the efficiency of the detection operation. At the same time, it effectively limits the radar sensor's attitude deviation under vibration-generating detection conditions, improving the stability of the detection process. Furthermore, the upper stabilizing component clamps the bottom areas at both ends of the radar sensor, ensuring clamping force while avoiding interference with the radar signal area.

[0015] Furthermore, the sliding detection rod includes a sliding shell, which is slidably mounted on the bottom of the hydraulic tank. A connecting slide column is slidably mounted inside the sliding shell. A piezoelectric element is mounted on the top of the sliding shell. A transmission plate is mounted inside the sliding shell. A test spring is installed between the transmission plate and the connecting slide column. The transmission plate is in close contact with the piezoelectric element.

[0016] After the second displacement, the drive assembly continues to control the two energized clamping units to move closer together, performing a third displacement. As the pressure in the compression chamber continues, the sliding shell on the sliding detection rod moves further downward. Because the upper and lower energized clamps are pressed together and cannot move further, the connecting slide column connected to them also remains stationary. The connecting slide column and the downward sliding shell generate relative displacement. The test spring is compressed and applies a preload to the terminal through the connecting slide column and the upper energized clamp. After being compressed, the test spring transmits its elastic force to the transmission plate, which squeezes the piezoelectric element. After being compressed, the piezoelectric element generates an electrical signal proportional to the pressure. The longer the three-stage displacement, the longer the relative displacement distance between the sliding shell and the connecting slide column, the greater the compression of the test spring and the return spring, the greater the preload applied to the terminal and the bottom of both sides of the sensor, and the stronger the generated electrical signal. The control system compares the electrical signal with the preset value. When the received electrical signal reaches the preset value, the drive assembly stops, thus completing the detection and adjustment of the preload on the terminal and the bottom of both sides of the sensor.

[0017] After the preload is adjusted, the control system starts and drives the slider. The electric slider slides along the slide rail and drives the radar sensor on it into the outer casing. Finally, several detection and testing units are activated to test the various parameters of the radar sensor one by one.

[0018] Furthermore, the lower stabilizing component includes a support plate, a connecting rod installed on one side of the support plate, a transmission block installed at the bottom of the support plate, the transmission block being installed on the drive assembly, and a lower energized clamp installed on one side of the support plate.

[0019] Furthermore, the drive assembly includes two end plates, which are symmetrically mounted on the positioning bracket. Positioning rods are symmetrically mounted between the end plates. A lead screw is rotatably mounted on the end plate. A motor is mounted on the end plate. The motor output shaft is connected to the lead screw. The transmission block is slidably connected to the positioning rod. The lead screw has symmetrical threads and is threadedly connected to the transmission block.

[0020] Before testing, the staff placed the radar sensor to be tested between the positioning bars. Then, the motor was turned on, and the motor output shaft drove the lead screw to rotate. The lead screw, through threaded transmission, caused the transmission blocks to slide on the positioning bars. Because the lead screw uses a symmetrical thread design, the two sets of transmission blocks move in opposite directions on the positioning bars. The two transmission blocks drive the support plate to move relative to each other and gradually approach each other. The support plate, through the connecting rod, further drives the upper stabilizing components to approach each other, thereby driving the electrically powered clamping unit.

[0021] Furthermore, positioning strips are symmetrically provided on the positioning bracket.

[0022] The positioning strips are movably mounted on the positioning bracket, and the spacing between the positioning strips can be symmetrically adjusted according to the specifications of the radar sensor.

[0023] Compared with the prior art, the beneficial effects of the present invention are: 1. By adopting a symmetrical threaded screw drive structure, the two sets of transmission blocks can slide synchronously in opposite directions on the positioning rod, thereby driving the support plate and the upper stabilizing component to produce a balanced and consistent retraction action, ensuring the force symmetry and attitude stability of the radar sensor during the clamping process.

[0024] 2. The radar sensor is initially clamped at both ends by side clamps, with the initial clamping position located in the lower part of both ends of the sensor. This effectively avoids the radar signal emitting surface, ensuring clamping effect while avoiding interference with the radar signal.

[0025] 3. Based on the initial centering positioning, the hydraulic box continues to move forward and converts the sliding of the piston rod into the downward displacement of the upper energized clamping plate, so that the upper and lower energized clamping plates can automatically align and clamp the wiring terminals, thereby completing automatic wiring and achieving two-stage clamping of the wiring terminals. This ensures that the electrical connection of the sensor is stable and reliable during the testing process, while further enhancing the overall attitude maintenance capability, reducing the risk of displacement under vibration conditions, and improving the detection stability.

[0026] 4. After completing the two-stage clamping, the drive assembly continues to drive the energized clamping units to move closer together, causing relative displacement between the sliding shell and the connecting sliding column and gradually compressing the test spring. Pressure is applied to the piezoelectric element through the transmission plate, generating an electrical signal proportional to the preload, thus achieving the purpose of preload detection. The control system automatically adjusts the clamping stroke according to the electrical signal, so that the terminal receives a precise and controllable preload, thereby ensuring the reliability of terminal crimping, improving test consistency, and avoiding poor electrical contact and terminal damage caused by insufficient or excessive crimping. Attached Figure Description

[0027] Figure 1 This is a three-dimensional view of the testing equipment of the present invention; Figure 2 This is a perspective view of the testing equipment of the present invention; Figure 3 This is a perspective view of the positioning bracket and drive assembly of the present invention; Figure 4 This is a perspective view of the driving component and the energized clamping unit of the present invention; Figure 5 This is a perspective view of the electrically powered clamping unit of the present invention; Figure 6 This is a cross-sectional view of the electrically conductive clamping unit of the present invention; Figure 7 This is a perspective view of the stabilizing component of the present invention; Figure 8 This is a perspective view of the sliding detection rod of the present invention.

[0028] In the diagram: 1. Outer casing; 2. Slide rail; 3. Electric slider; 4. Positioning bracket; 5. Drive assembly; 6. Powered clamping unit; 41. Positioning strip; 51. End plate; 52. Motor; 53. Positioning rod; 54. Lead screw; 61. Lower stabilizing component; 62. Connecting rod; 63. Upper stabilizing component; 611. Support plate; 612. Transmission block; 613. Lower powered clamp; 631. Hydraulic tank; 632. Side clamp; 633. Sliding detection rod; 634. Upper powered clamp; 6321. Clamping plate; 6322. Piston rod; 6323. Return spring; 6331. Sliding shell; 6332. Connecting slide column; 6333. Test spring; 6334. Transmission plate; 6335. Piezoelectric element; 6311. Extrusion chamber; 6312. Expansion chamber. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1-8 As shown, the present invention provides a radar sensor testing equipment with multiple testing functions: including an outer casing 1, a slide rail 2 installed inside the casing, an electric slider 3 installed on the slide rail 2, a positioning bracket 4 installed on the electric slider 3, a drive assembly 5 installed on the positioning bracket 4, and energized clamping units 6 symmetrically installed on the drive assembly 5. The energized clamping unit 6 includes a lower stabilizing member 61, a connecting rod 62 mounted on the lower stabilizing member 61, an upper stabilizing member 63 mounted on the connecting rod 62, and the lower stabilizing member 61 mounted on the drive assembly 5.

[0031] The outer casing 1 houses several test units used to test various parameters of the radar sensor. The outer casing 1 also contains a control system used to control the entire testing equipment.

[0032] Positioning strips 41 are symmetrically arranged on the positioning bracket 4. The positioning strips 41 are movably mounted on the positioning bracket 4, and the spacing between the positioning strips 41 can be adjusted symmetrically according to the specifications of the radar sensor.

[0033] The drive assembly 5 includes two end plates 51, which are symmetrically mounted on the positioning bracket 4. Positioning rods 53 are symmetrically mounted between the end plates 51. A lead screw 54 is rotatably mounted on the end plate 51. A motor 52 is mounted on the end plate 51. The output shaft of the motor 52 is connected to the lead screw 54. The transmission block 612 is slidably connected to the positioning rod 53. The lead screw 54 is provided with symmetrical threads and is threadedly connected to the transmission block 612.

[0034] The upper stabilizing component 63 includes a hydraulic tank 631, which is mounted on the connecting rod 62. A side clamp 632 is slidably mounted on the hydraulic tank 631, and a sliding detection rod 633 is slidably mounted inside the hydraulic tank 631. An upper energized clamp 634 is mounted at the bottom of the sliding detection rod 633. The upper energized clamp 634 and the lower energized clamp 613 are connected to an external power source via wires. During the test, the power source supplies power to the upper energized clamp 634 and the lower energized clamp 613 through the wires, thereby energizing the radar detector wiring terminals.

[0035] The hydraulic tank 631 contains an expansion chamber 6312 and a compression chamber 6311. The compression chamber 6311 is connected to the expansion chamber 6312. The side clamp 632 is slidably connected to the expansion chamber 6312. The sliding detection rod 633 is slidably installed in the compression chamber 6311. The compression chamber 6311 and the expansion chamber 6312 are filled with hydraulic oil.

[0036] The side clamp 632 includes a piston rod 6322, which is slidably mounted in the expansion chamber 6312. A clamping plate 6321 is mounted on the piston rod 6322, and a return spring 6323 is installed between the clamping plate 6321 and the hydraulic chamber.

[0037] The sliding detection rod 633 includes a sliding shell 6331, which is slidably installed at the bottom of the hydraulic tank 631. A connecting slide column 6332 is slidably installed inside the sliding shell 6331. A piezoelectric element 6335 is installed at the top of the sliding shell 6331. A transmission plate 6334 is installed inside the sliding shell 6331. A test spring 6333 is installed between the transmission plate 6334 and the connecting slide column 6332. The transmission plate 6334 and the piezoelectric element 6335 are in close contact.

[0038] The lower stabilizing component 61 includes a support plate 611, a connecting rod 62 installed on one side of the support plate 611, a transmission block 612 installed at the bottom of the support plate 611, the transmission block 612 installed on the drive assembly 5, and a lower energized clamp 613 installed on one side of the support plate 611.

[0039] The working principle of this invention is as follows: Before testing, the operator places the radar sensor to be tested between the positioning bars 41. Then, the motor 52 is turned on, and the output shaft of the motor 52 drives the lead screw 54 to rotate. The lead screw 54 drives the transmission block 612 to slide on the positioning rod 53 through threaded transmission. Since the lead screw 54 adopts a symmetrical threaded arrangement, the two sets of transmission blocks 612 move in opposite directions on the positioning rod 53. The two transmission blocks 612 drive the support plate 611 to move towards each other and gradually approach each other. The support plate 611 further drives the upper stabilizing member 63 to approach each other through the connecting rod 62, thereby realizing the driving of the energized clamping unit 6.

[0040] The drive assembly 5 first drives the two sets of upper stabilizing members 63 to move closer to each other and perform initial displacement. The side clamps 632 on them gradually come into contact with both ends of the radar sensor. The clamping plates 6321 push the radar sensor inward from both sides to achieve the centering and positioning of the radar sensor and achieve the purpose of initial clamping.

[0041] After both clamping plates 6321 contact the radar sensor and complete centering, the initial displacement ends. Then, the drive assembly 5 continues to drive the two sets of energized clamping units 6 closer together, initiating the second displacement. At this point, the clamping plates 6321 stop moving due to contact with the sensor; only the hydraulic tank 631 continues to move forward. A relative displacement occurs between the clamping plates 6321 and the hydraulic tank 631. Correspondingly, the piston rod 6322 connected to the clamping plates 6321 also slides relative to each other within the expansion chamber 6312. The return spring 6323 is compressed and begins to apply preload to both ends of the sensor. When the piston head of the piston rod 6322 moves, it squeezes the hydraulic oil in the expansion chamber 6312, pushing the hydraulic oil into the compression chamber 6311, increasing the pressure within the compression chamber 6311. The pressurized hydraulic oil pushes the sliding detection rod 633 downwards, thereby causing the upper energized clamping plate 634 to move downwards.

[0042] Simultaneously, the support plate 611 slides along the guide towards the bottom of the radar sensor, supporting its lower end, while the lower energized clamp 613 moves synchronously to below the terminal. As the upper energized clamp 634 moves downward, it and the lower energized clamp 613 converge, reliably clamping and fixing the radar sensor's terminal, achieving two-stage clamping. This completes the two-stage displacement, thus realizing double-stage clamping and automatic wiring of the terminal, improving detection efficiency. Furthermore, it effectively limits the radar sensor's attitude deviation under vibration-generating detection conditions, enhancing the stability of the detection process. In addition, the upper stabilizing member 63 clamps the bottom areas of both ends of the radar sensor, ensuring clamping force while avoiding interference with the radar signal area.

[0043] After the second displacement, the drive assembly 5 continues to control the two energized clamping units 6 to move closer together, performing a third displacement. As the pressure in the compression chamber 6311 continues, the sliding shell 6331 on the sliding detection rod 633 moves further downward. Because the upper energized clamp 634 and the lower energized clamp 613 are close together and cannot move further, the connecting slide column 6332 connected to it also remains stationary. The connecting slide column 6332 and the downward sliding shell 6331 generate relative displacement. The test spring 6333 is compressed and applies a preload to the terminal through the connecting slide column 6332 and the upper energized clamp 634. After being compressed, the test spring 6333 transmits the elastic force to the terminal. The transmission plate 6334 compresses the piezoelectric element 6335. After being compressed, the piezoelectric element 6335 generates an electrical signal proportional to the pressure. The longer the three-stage displacement, the longer the relative displacement distance between the sliding shell 6331 and the connecting slide column 6332, the greater the compression of the test spring 6333 and the return spring 6323, the greater the preload applied to the terminal and the bottom of both sides of the sensor, and the greater the generated electrical signal. The control system compares the electrical signal with the preset value. When the received electrical signal reaches the preset value, the drive assembly 5 is stopped, thereby completing the detection and adjustment of the preload applied to the terminal and the bottom of both sides of the sensor.

[0044] After the preload is adjusted, the control system starts and drives the slider 3 to slide along the slide rail 2, and drives the radar sensor on it into the outer casing 1. Finally, several detection and testing units are activated to test the various parameters of the radar sensor one by one.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A radar sensor testing device with multiple testing functions, comprising an outer casing (1), a slide rail (2) installed inside the casing, and an electric slider (3) installed on the slide rail (2), characterized in that: The electric slider (3) is equipped with a positioning bracket (4), the positioning bracket (4) is equipped with a drive assembly (5), and the drive assembly (5) is symmetrically equipped with an electric clamping unit (6). The energized clamping unit (6) includes a lower stabilizing member (61), a connecting rod (62) is mounted on the lower stabilizing member (61), an upper stabilizing member (63) is mounted on the connecting rod (62), and the lower stabilizing member (61) is mounted on the drive assembly (5).

2. The radar sensor testing device with multiple testing functions according to claim 1, characterized in that: The upper stabilizing component (63) includes a hydraulic tank (631), which is mounted on a connecting rod (62). A side clamp (632) is slidably mounted on the hydraulic tank (631), and a sliding detection rod (633) is slidably mounted inside the hydraulic tank (631). An upper energized clamp (634) is mounted at the bottom of the sliding detection rod (633).

3. The radar sensor testing device with multiple testing functions according to claim 2, characterized in that: The hydraulic tank (631) is provided with an expansion chamber (6312) and a compression chamber (6311). The compression chamber (6311) is connected to the expansion chamber (6312). The side clamp (632) is slidably connected to the expansion chamber (6312). The sliding detection rod (633) is slidably installed in the compression chamber (6311).

4. The radar sensor testing device with multiple testing functions according to claim 3, characterized in that: The side clamp (632) includes a piston rod (6322), which is slidably mounted in the expansion chamber (6312). A clamping plate (6321) is mounted on the piston rod (6322), and a return spring (6323) is installed between the clamping plate (6321) and the hydraulic chamber.

5. A radar sensor testing device with multiple testing functions according to claim 3, characterized in that: The sliding detection rod (633) includes a sliding shell (6331), which is slidably installed at the bottom of the hydraulic tank (631). A connecting slide column (6332) is slidably installed inside the sliding shell (6331). A piezoelectric element (6335) is installed at the top of the sliding shell (6331). A transmission plate (6334) is installed inside the sliding shell (6331). A test spring (6333) is installed between the transmission plate (6334) and the connecting slide column (6332). The transmission plate (6334) is in close contact with the piezoelectric element (6335).

6. A radar sensor testing device with multiple testing functions according to claim 1, characterized in that: The lower stabilizing member (61) includes a support plate (611), the connecting rod (62) is installed on one side of the support plate (611), a transmission block (612) is installed at the bottom of the support plate (611), the transmission block (612) is installed on the drive assembly (5), and a lower energized clamp (613) is installed on one side of the support plate (611).

7. A radar sensor testing device with multiple testing functions according to claim 6, characterized in that: The drive assembly (5) includes two end plates (51), which are symmetrically mounted on the positioning bracket (4). Positioning rods (53) are symmetrically mounted between the end plates (51). A lead screw (54) is rotatably mounted on the end plate (51). A motor (52) is mounted on the end plate (51). The output shaft of the motor (52) is connected to the lead screw (54). The transmission block (612) is slidably connected to the positioning rod (53). The lead screw (54) has symmetrical threads. The lead screw (54) is threadedly connected to the transmission block (612).

8. A radar sensor testing device with multiple testing functions according to claim 1, characterized in that: The positioning bracket (4) is symmetrically provided with positioning strips (41).

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