A millimeter wave radar test rack

Abstract

The utility model discloses a kind of millimeter wave radar test racks, belong to millimeter wave radar test technical field, including support frame, support frame top is fixedly connected with shield case, shield case side is equipped with through hole, transparent door is hinged in through hole, support frame top is rotatably connected with support table, and millimeter wave radar is installed in support table top surface;The present application is provided with shield case, electromagnetic seal rubber strip, copper foil shielding layer and limiting mechanism, when transparent door is closed, electromagnetic seal rubber strip will be extruded, the gap between transparent door and through hole can be tightly filled, effectively sealed to electromagnetic interference is realized, limiting mechanism is further used to limit the position of transparent door and fixed, avoid in the testing process to cause transparent door to open, so it can effectively improve the electromagnetic shielding capability of test rack, avoid external electromagnetic interference, affect millimeter wave radar's test precision, effectively improve millimeter wave radar's signal reception and processing capacity.

Description

Technical Field

[0001] This utility model specifically relates to a millimeter-wave radar test fixture, belonging to the field of millimeter-wave radar testing technology. Background Technology

[0002] Millimeter-wave radar is an active detection sensor that operates in the millimeter-wave frequency band. Due to its short wavelength, it has high range resolution, high angular resolution, and strong anti-interference capabilities. It can accurately acquire information such as the distance, speed, and angle of a target. Its small size and ability to penetrate fog, smoke, and dust are superior to optical sensors. It is widely used in fields such as intelligent connected vehicles, autonomous driving, security monitoring, industrial inspection, and aerospace.

[0003] Because millimeter-wave radar needs to meet stringent performance indicators in practical applications, such as detection range error, velocity measurement accuracy, and target recognition accuracy, its various performance parameters must be comprehensively tested using specialized equipment before leaving the factory or during the research and development process. The millimeter-wave radar test rack, as a core testing auxiliary device specifically used to fix and adjust the radar's position and attitude, can provide a stable test benchmark for the radar. Through the test rack, the relative position between the radar and the target simulator and signal acquisition equipment can be precisely controlled to simulate the detection environment under different scenarios.

[0004] In practical applications, millimeter-wave radar is highly sensitive to electromagnetic environments during testing. Therefore, external electromagnetic interference in the testing environment can severely affect the testing accuracy of millimeter-wave radar, interfere with its signal reception and processing, and lead to false targets and noise in the test results, thus reducing the reliability of the test. To address this, this application provides a millimeter-wave radar test fixture. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a millimeter-wave radar test fixture, thereby effectively preventing and controlling electromagnetic interference during the testing process.

[0006] To further achieve the above objectives, the following technical solution is adopted:

[0007] A millimeter-wave radar test fixture includes a support frame, a shielding cover fixedly connected to the top of the support frame, a through opening on one side of the shielding cover, a transparent door hinged within the through opening, a support platform rotatably connected to the top of the support frame, a millimeter-wave radar mounted on the top surface of the support platform, and fixed frames symmetrically fixedly connected to the top surface of the support frame. Two baffles are movably installed within each of the two fixed frames, which are located on opposite sides of the millimeter-wave radar. A limiting mechanism for fixing the position of the transparent door is installed on one side of the shielding cover. A clamping mechanism for stabilizing the millimeter-wave radar is installed on the top of the support platform, and a driving component is installed within the fixed frames.

[0008] Preferably, the limiting mechanism includes guide grooves respectively opened on one side of the shielding cover and the transparent door, the two guide grooves are on the same horizontal line, a U-shaped block is slidably connected inside the guide groove on the side of the shielding cover, a limiting rod is slidably connected through the U-shaped block, and a handle is fixedly connected to one end of the limiting rod, the handle is located outside the U-shaped block.

[0009] Preferably, a guide plate is fixedly connected to the outer wall of the limiting rod, the guide plate is slidably connected inside the U-shaped block, a spring is sleeved on the outer wall of the limiting rod, and the two ends of the spring are fixedly connected to the inner wall of the U-shaped block and one side of the guide plate, respectively. A limiting hole matching the size of one end of the limiting rod is symmetrically opened on one side of the transparent door.

[0010] Preferably, a frame is fixedly connected inside the through opening, an electromagnetic sealing strip is fixedly connected to one side of the frame, the electromagnetic sealing strip is located between the transparent door and the frame, and a copper foil shielding layer is provided inside the shielding cover.

[0011] Preferably, the driving component includes a lead screw rotatably connected inside the fixed frame, a T-shaped block threaded onto the lead screw with its bottom located inside the fixed frame, the T-shaped block allowing a baffle to move within the fixed frame via the lead screw, the baffle being slidably disposed on the top of the T-shaped block, and a motor fixedly connected to one side inside the fixed frame.

[0012] Preferably, a speed reducer is fixedly connected to the output end of the motor, the output end of the speed reducer is fixedly connected to one end of the lead screw, an elastic coupling is provided at the connection end between the speed reducer and the lead screw, and a buffer pad is fixedly connected to one side of the inner wall of the fixed frame.

[0013] Preferably, the clamping mechanism includes a sliding groove formed on the top surface of the support platform, a guide rod fixedly connected in the sliding groove, a clamping block one slidably connected to the outer wall of the guide rod, the clamping block one slidably connected in the sliding groove, a clamping block two fixedly connected to the top surface of the support platform, and a spring two sleeved on the outer wall of the guide rod, the two ends of the spring two being fixedly connected to one side of the clamping block one and the inner wall of the sliding groove, respectively.

[0014] Beneficial effects:

[0015] 1. This application includes a shielding cover, an electromagnetic sealing strip, a copper foil shielding layer, and a limiting mechanism. When the transparent door is closed, the electromagnetic sealing strip is compressed, which tightly fills the gap between the transparent door and the through-hole, effectively sealing against electromagnetic interference. At the same time, the limiting mechanism limits and fixes the position of the transparent door, preventing it from opening during testing. This effectively improves the electromagnetic shielding capability of the test fixture, avoids external electromagnetic interference that could affect the testing accuracy of the millimeter-wave radar, and effectively improves the signal reception and processing capabilities of the millimeter-wave radar.

[0016] 2. This application includes a drive unit. By adjusting the speed of the motor, the moving speed and position of the baffle can be effectively controlled. This allows for testing the relationship between the penetration effect and distance of baffles made of different materials using millimeter-wave radar. Furthermore, since the motor will generate slight vibrations during operation, the speed reducer, flexible coupling, and buffer pads can effectively absorb the vibration energy generated during motor operation, preventing the vibration force from being transmitted to the millimeter-wave radar and causing inaccurate test results. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the unfolding structure of the transparent door in this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 5 This is a three-dimensional structural diagram of the driving component in this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the clamping mechanism in this utility model.

[0023] In the diagram: 1. Support frame; 2. Shielding cover; 3. Transparent door; 4. Support platform; 7. Fixing frame; 8. Baffle plate; 9. Guide groove; 10. U-shaped block; 11. Limiting rod; 12. Handle; 13. Limiting hole; 14. Guide plate; 15. Spring 1; 16. Frame; 17. Electromagnetic sealing strip; 18. Copper foil shielding layer; 19. T-shaped block; 20. Lead screw; 21. Motor; 22. Reducer; 23. Flexible coupling; 24. Buffer pad; 25. Guide rod; 26. Clamping block 1; 27. Spring 2; 28. Clamping block 2. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6As shown, a millimeter-wave radar test frame includes a support frame 1, a shield 2 fixedly connected to the top of the support frame 1, a through opening on one side of the shield 2, a transparent door 3 hinged inside the through opening, a support platform 4 rotatably connected to the top of the support frame 1, a millimeter-wave radar mounted on the top surface of the support platform 4, and fixed frames 7 symmetrically fixedly connected to the top surface of the support frame 1. Baffles 8 are movably installed inside both fixed frames 7, and the two fixed frames 7 are located on both sides of the millimeter-wave radar. A limiting mechanism for fixing the position of the transparent door 3 is installed on one side of the shield 2. A clamping mechanism for stabilizing the millimeter-wave radar is installed on the top of the support platform 4. A driving component is installed inside the fixed frame 7, and a copper foil shielding layer 18 is provided inside the shield 2.

[0026] A frame 16 is fixedly connected inside the through opening, and an electromagnetic sealing strip 17 is fixedly connected to one side of the frame 16. The electromagnetic sealing strip 17 is located between the transparent door 3 and the frame 16.

[0027] During testing, the transparent door 3 can be opened first, and then the millimeter-wave radar can be fixed to the top of the support platform 4 using the clamping mechanism. Then, according to the testing requirements, baffles 8 of different materials can be installed on the mounting bracket 7. Once everything is ready, the transparent door 3 can be closed and pushed into the through-hole. This will cause the electromagnetic sealing strip 17 between the inner wall of the transparent door 3 and the frame 16 to fit tightly. When the transparent door 3 is closed, the electromagnetic sealing strip 17 will be compressed, tightly filling the gap between the transparent door 3 and the through-hole, achieving effective sealing against electromagnetic interference. After the transparent door 3 is closed, the limiting mechanisms on both sides of the shielding cover 2 can be pulled to limit the position of the transparent door 3, preventing it from opening during the test. This achieves overall sealing of the test frame. At this time, the shielding cover 2, copper foil shielding layer 18, and electromagnetic sealing strip 17 can effectively improve the electromagnetic shielding capability of the test frame, avoid external electromagnetic interference, and prevent it from affecting the test accuracy of the millimeter-wave radar. This effectively improves the signal reception and processing capability of the millimeter-wave radar. Finally, the driving component can be activated to move the baffles 8 of different materials toward the millimeter-wave radar to carry out a series of tests.

[0028] Reference Figure 1 The limiting mechanism includes guide grooves 9 respectively opened on one side of the shielding cover 2 and the transparent door 3. The two guide grooves 9 are on the same horizontal line. A U-shaped block 10 is slidably connected inside the guide groove 9 on the side of the shielding cover 2. A limiting rod 11 is slidably connected through the U-shaped block 10. A handle 12 is fixedly connected to one end of the limiting rod 11. The handle 12 is located outside the U-shaped block 10. A guide plate 14 is fixedly connected to the outer wall of the limiting rod 11. The guide plate 14 is slidably connected inside the U-shaped block 10. A spring 15 is sleeved on the outer wall of the limiting rod 11. The two ends of the spring 15 are fixedly connected to the inner wall of the U-shaped block 10 and one side of the guide plate 14, respectively. A limiting hole 13 matching the size of one end of the limiting rod 11 is symmetrically opened on one side of the transparent door 3.

[0029] In use, the U-shaped block 10 can be pulled from the guide groove 9 on one side of the shielding cover 2 to the guide groove 9 on the side of the transparent door 3 until the U-shaped block 10 is located at the connection between the two guide grooves 9. At this time, the limiting rod 11 will move to be on the same straight line as the limiting hole 13. According to the rebound of the spring 15, the guide plate 14 and the limiting rod 11 will be pushed forward to push the limiting rod 11 into the limiting hole 13. In this way, the position of the shielding cover 2 and the transparent door 3 is limited and fixed by the connection between the limiting rod 11 and the limiting hole 13, so as to prevent the transparent door 3 from opening during the test and thus achieve the overall sealing of the test frame.

[0030] Reference Figure 1 The driving component includes a lead screw 20 rotatably connected inside the fixed frame 7. A T-shaped block 19 is threaded onto the lead screw 20, and the bottom of the T-shaped block 19 is located inside the fixed frame 7. The T-shaped block 19 can move the baffle 8 inside the fixed frame 7 through the lead screw 20. The baffle 8 is slidably disposed on the top of the T-shaped block 19. A motor 21 is fixedly connected to one side inside the fixed frame 7. A reducer 22 is fixedly connected to the output end of the motor 21. The output end of the reducer 22 is fixedly connected to one end of the lead screw 20. An elastic coupling 23 is provided at the connection end between the reducer 22 and the lead screw 20. A buffer pad 24 is fixedly connected to one side of the inner wall of the fixed frame 7.

[0031] In use, the motor 21 and reducer 22 can be started to drive the lead screw 20 to rotate through the flexible coupling 23. Since the T-block 19 is threadedly connected to the lead screw 20, as the lead screw 20 rotates and is guided by the inside of the fixing frame 7, the T-block 19 and the baffle 8 will move closer to the millimeter-wave radar. By adjusting the speed of the motor 21, the moving speed and position of the baffle 8 can be effectively controlled. This allows the millimeter-wave radar to test the penetration effect and distance relationship of baffles 8 made of different materials. Furthermore, since the motor 21 will generate slight vibrations during operation, the reducer 22, flexible coupling 23, and buffer pad 24 can effectively absorb the vibration energy generated by the motor 21 during operation, preventing the vibration force from being transmitted to the millimeter-wave radar and causing inaccurate test results.

[0032] Reference Figure 1 The clamping mechanism includes a slide groove on the top surface of the support platform 4. A guide rod 25 is fixedly connected in the slide groove. A clamping block 26 is slidably connected to the outer wall of the guide rod 25. The clamping block 26 is slidably connected in the slide groove. A clamping block 28 is fixedly connected to the top surface of the support platform 4. A spring 27 is sleeved on the outer wall of the guide rod 25. The two ends of the spring 27 are fixedly connected to one side of the clamping block 26 and the inner wall of the slide groove, respectively.

[0033] In use, first pull clamping block 1 26 away from clamping block 28 according to the guide rod 25, and squeeze spring 27 to retract. At this time, the millimeter-wave radar can be placed on the top of the support platform 4. Then, clamping block 1 26 can be released. According to the rebound of spring 27, clamping block 1 26 will be pushed to fit with one side of the millimeter-wave radar and drive the millimeter-wave radar to fit with one side of clamping block 28. In this way, by clamping with clamping block 1 26 and clamping block 28, millimeter-wave radars of different models and sizes can be clamped and stabilized, so as to better complete the test.

[0034] As a technical optimization of this utility model: the transparent door 3 can be opened first, and then the clamping block 26 can be pulled away from the clamping block 28 according to the guide rod 25, and the spring 27 can be squeezed to retract. At this time, the millimeter-wave radar can be placed on the top of the support platform 4. Then the clamping block 26 can be released. According to the rebound of the spring 27, the clamping block 26 will be pushed to fit with the side of the millimeter-wave radar and the millimeter-wave radar will fit with the side of the clamping block 28. Then, according to the test requirements, the baffles 8 of different materials can be installed on the fixing frame 7. When everything is ready, the transparent door 3 can be closed and pushed into the through opening. At this time, the electromagnetic sealing strip 17 between the inner wall of the transparent door 3 and the frame 16 will fit tightly. When the transparent door 3 is closed, the electromagnetic sealing strip 17 will be squeezed, which can tightly fill the gap between the transparent door 3 and the through opening, and achieve effective sealing against electromagnetic interference.

[0035] Simultaneously, after the transparent door 3 is closed, the U-shaped block 10 can be pulled from the guide groove 9 on one side of the shielding cover 2 to the guide groove 9 on the other side of the transparent door 3 until the U-shaped block 10 is located at the connection between the two guide grooves 9. At this time, the limiting rod 11 will move to be on the same straight line as the limiting hole 13. According to the rebound of the spring 15, the guide plate 14 and the limiting rod 11 will be pushed forward to push the limiting rod 11 into the limiting hole 13. In this way, the position of the shielding cover 2 and the transparent door 3 is limited and fixed by the connection between the limiting rod 11 and the limiting hole 13, so as to prevent the transparent door 3 from opening during the test. This achieves the overall sealing of the test frame. At this time, the electromagnetic shielding capability of the test frame can be effectively improved by the shielding cover 2, the copper foil shielding layer 18 and the electromagnetic sealing strip 17, avoiding external electromagnetic interference that affects the test accuracy of the millimeter-wave radar and effectively improving the signal reception and processing capability of the millimeter-wave radar.

[0036] Finally, the motor 21 and reducer 22 can be started to drive the lead screw 20 to rotate through the flexible coupling 23. Since the T-block 19 is threadedly connected to the lead screw 20, as the lead screw 20 rotates and is guided by the inside of the fixing frame 7, the T-block 19 and the baffle 8 will move closer to the millimeter-wave radar. By adjusting the speed of the motor 21, the moving speed and position of the baffle 8 can be effectively controlled. This allows the millimeter-wave radar to test the penetration effect and distance relationship of baffles 8 made of different materials. Furthermore, since the motor 21 will generate slight vibrations during operation, the reducer 22, flexible coupling 23, and buffer pad 24 can effectively absorb the vibration energy generated by the motor 21 during operation, preventing the vibration force from being transmitted to the millimeter-wave radar and causing inaccurate test results.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A millimeter-wave radar test frame, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixedly connected to a shield (2). A through opening is provided on one side of the shield (2). A transparent door (3) is hinged in the through opening. The top of the support frame (1) is rotatably connected to a support platform (4). A millimeter-wave radar is installed on the top surface of the support platform (4). A fixed frame (7) is symmetrically fixedly connected to the top surface of the support frame (1). A baffle (8) is movably installed in both fixed frames (7). The two fixed frames (7) are located on both sides of the millimeter-wave radar. A limiting mechanism for fixing the position of the transparent door (3) is installed on one side of the shield (2). A clamping mechanism for stabilizing the millimeter-wave radar is installed on the top of the support platform (4). A driving component is installed in the fixed frame (7). A copper foil shielding layer (18) is provided inside the shield (2).

2. The millimeter-wave radar test fixture as described in claim 1, characterized in that: The limiting mechanism includes guide grooves (9) respectively opened on one side of the shield (2) and the transparent door (3). The two guide grooves (9) are on the same horizontal line. A U-shaped block (10) is slidably connected inside the guide groove (9) on one side of the shield (2). A limiting rod (11) is slidably connected through the U-shaped block (10). A handle (12) is fixedly connected to one end of the limiting rod (11). The handle (12) is located outside the U-shaped block (10).

3. The millimeter-wave radar test fixture as described in claim 2, characterized in that: The outer wall of the limiting rod (11) is fixedly connected to a guide plate (14), which is slidably connected inside the U-shaped block (10). A spring (15) is sleeved on the outer wall of the limiting rod (11). The two ends of the spring (15) are fixedly connected to the inner wall of the U-shaped block (10) and one side of the guide plate (14), respectively. A limiting hole (13) matching the size of one end of the limiting rod (11) is symmetrically opened on one side of the transparent door (3).

4. The millimeter-wave radar test fixture as described in claim 1, characterized in that: A frame (16) is fixedly connected inside the through opening, and an electromagnetic sealing strip (17) is fixedly connected to one side of the frame (16). The electromagnetic sealing strip (17) is located between the transparent door (3) and the frame (16).

5. A millimeter-wave radar test fixture as described in claim 1, characterized in that: The driving component includes a lead screw (20) rotatably connected inside the fixed frame (7). A T-shaped block (19) is threaded onto the lead screw (20), and the bottom of the T-shaped block (19) is located inside the fixed frame (7). The T-shaped block (19) can move the baffle (8) inside the fixed frame (7) through the lead screw (20). The baffle (8) is slidably disposed on the top of the T-shaped block (19). A motor (21) is fixedly connected to one side inside the fixed frame (7).

6. The millimeter-wave radar test fixture as described in claim 5, characterized in that: The output end of the motor (21) is fixedly connected to a reducer (22), the output end of the reducer (22) is fixedly connected to one end of the lead screw (20), the connection end of the reducer (22) and the lead screw (20) is provided with an elastic coupling (23), and a buffer pad (24) is fixedly connected to one side of the inner wall of the fixed frame (7).

7. A millimeter-wave radar test fixture as described in claim 1, characterized in that: The clamping mechanism includes a sliding groove on the top surface of the support platform (4), a guide rod (25) is fixedly connected in the sliding groove, a clamping block (26) is slidably connected to the outer wall of the guide rod (25), the clamping block (26) is slidably connected in the sliding groove, a clamping block (28) is fixedly connected to the top surface of the support platform (4), and a spring (27) is sleeved on the outer wall of the guide rod (25). The two ends of the spring (27) are fixedly connected to one side of the clamping block (26) and the inner wall of the sliding groove, respectively.

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