A device for testing a car radar

Abstract

The application discloses a kind of automobile radar testing devices, it is related to radar test field, including main test component, the main test component includes slope plate, the slope plate is fixed to the front of base plate, the front of base plate top end is rotatably connected with two rotating rollers, the two sides of base plate are provided with auxiliary test component one;The auxiliary test component one includes limit track one, placement mechanism, the placement mechanism is used to fix different kinds, shape barrier, the movement track of placement mechanism and barrier thereon is limited by limit track one, using part has sound-absorbing, light-absorbing material barrier, simulate actual driving, whether radar can be sensitive to such barrier, effectively expose the defect of radar, avoid part pedestrian wear dark, cotton and other sound-absorbing, light-absorbing clothes, radar cannot effectively receive sound wave, light wave, cause safety hazard.

Description

Technical Field

[0001] This invention relates to the field of radar testing technology, specifically to an automotive radar testing device. Background Technology

[0002] Based on available information, automotive radar is radar used in automobiles or other ground-based motor vehicles. Therefore, it includes various radars based on different technologies, such as laser, ultrasonic, and microwave. It is primarily an electronic device that assists vehicles in various road conditions, and all automotive radars undergo actual road testing before leaving the factory.

[0003] Existing authorized patents and existing equipment with the same or similar technologies still have the following problems in daily use:

[0004] 1. At present, extreme situations such as emergency automatic avoidance and emergency automatic braking can only be tested by placing dummies and obstacles in the test field. However, the test items only focus on whether the radar can successfully avoid or brake after identifying the obstacle. The test direction focuses on the radar's sensitivity and radiation distance, as well as the car's reaction. Although different radars work differently, the specific working principle of radar is the same. Most of them emit sound waves or light waves, which are reflected after contact with obstacles. The signals are received by the receiver and transmitted to the central processor for processing. However, different obstacles reflect sound waves and light waves to different degrees. For example, some dark-colored fabrics reflect light waves poorly, and some cotton fabrics or sponges will absorb sound waves. The receiver may have difficulty receiving light waves, causing the radar to fail and making it impossible to test the radar's monitoring of obstacles in different locations.

[0005] 2. In the current testing projects, obstacles are mostly placed at the front and rear of the vehicle. The main testing objective is to test the coordination between the radar and the vehicle's EPS and braking systems. However, in actual driving, the focus is on minor collisions. The radar is mostly designed for complex road environments to assist drivers. But in the road environment, the position of obstacles is uncontrollable, especially at the side of the vehicle. A large part of the side of the vehicle is a blind spot, making it difficult to detect obstacles in time. This puts great pressure on the radar's radiation range and recognition accuracy. Summary of the Invention

[0006] To address the aforementioned shortcomings, the present invention provides the following technical solution: an automotive radar testing device, comprising a main testing component, the main testing component comprising a ramp plate, the ramp plate being fixed to the front side of a substrate, two rotating rollers being rotatably connected to the front side of the top of the substrate, and a secondary testing component being provided on both sides of the substrate.

[0007] The sub-test component includes a defined track and a placement mechanism. The placement mechanism is used to fix obstacles of different types and shapes. The defined track defines the movement trajectory of the placement mechanism and the obstacles thereon. The defined track is wavy. The sub-test component is driven by a ramp to move the placement mechanism and the obstacles thereon up and down along the wavy defined track. The sub-test component also drives the obstacles to move back and forth in a cyclical manner.

[0008] Furthermore, a limiting groove is provided through the front of the limiting track, the limiting groove being the same shape as the limiting track, and a limiting block is slidably connected inside the limiting groove.

[0009] Furthermore, the placement mechanism includes a placement frame located on the side of the limiting track away from the substrate. The placement frame is fixedly connected to a limiting block on the same side. Fixing plates are fixed on both sides of the placement frame away from the substrate. The fixing plates are mirror-distributed, and a locking block engages at the opposite end of the fixing plate.

[0010] Furthermore, a connecting rod is fixed inside one of the rollers, with both ends of the connecting rod extending to both sides of the substrate. Drive wheels are rotatably connected to the front and rear positions of both sides of the substrate, and both ends of the connecting rod are fixedly connected to the drive wheels at the corresponding positions.

[0011] Furthermore, belts are provided on both sides of the substrate, and the belts are all wrapped around the surface of the drive wheel on the same side. The belts are made of a tough rubber material.

[0012] Furthermore, a secondary test component two is provided on the back side of the substrate. The secondary test component two includes a limiting track two. There are two limiting tracks two, which are respectively fixedly connected to the two sides of the substrate. A limiting groove two is opened through the surface of the limiting track two, and a limiting block two is slidably connected inside the limiting groove two.

[0013] Furthermore, both ends of the rotating roller near the second sub-test component are equipped with unidirectional rotating shafts. A winding roller is fixedly connected to the side of the unidirectional rotating shaft away from the rotating roller. A pull rope is fixedly connected to the side of the winding roller away from the substrate. One end of the pull rope is fixedly connected to the second limiting block on the same side.

[0014] Furthermore, a mounting post is provided in the middle of the second limiting track, and a transmission rod is fixedly connected in the middle of the mounting post. Both ends of the transmission rod are rotatably connected to the second limiting block on the same side. A magnet is fixedly connected to the rear of the middle of the second limiting track.

[0015] Furthermore, elastic ropes are provided on both sides below the magnet, with one end of the elastic rope fixedly connected to the magnet and the other end of the elastic rope fixedly connected to the transmission rod.

[0016] Compared with the known prior art, the technical solution provided by this invention has the following beneficial effects:

[0017] 1. By setting up the secondary test component two, users can set up different types of obstacles and approach the vehicle at the same speed to simulate different obstacles encountered during actual driving. This tests the reflection of sound waves or light waves emitted by the radar on different obstacles, thereby allowing for precise adjustment of radar performance. This device uses some obstacles with sound-absorbing and light-absorbing materials to simulate whether the radar can sensitively respond to such obstacles during actual driving, effectively exposing the radar's defects and preventing safety hazards caused by pedestrians wearing dark-colored, cotton, or other sound-absorbing and light-absorbing clothing, which may prevent the radar from effectively receiving sound waves and light waves.

[0018] 2. This device does not require testing in an open-air environment. It can be placed indoors to simulate the emission and reflection of radar light waves under different lighting conditions, and to test the receiver's reception capability in dim lighting conditions. It comprehensively tests the performance of the radar. Furthermore, through the secondary test component two, the experiment can be repeated multiple times in a short period of time to obtain a large amount of data, which can be averaged to obtain referential test data. Unlike traditional testing, it does not require manual driving of vehicles to continuously simulate the test, which greatly improves the testing efficiency and can maintain the same speed for each test, thus enhancing the persuasiveness of the test data.

[0019] 3. By setting up a secondary test component, the obstacle is moved along a wavy trajectory on the side of the vehicle to simulate obstacles at different positions on the side of the vehicle. This tests whether the radar can identify the existence of the obstacle in a timely and accurate manner, and whether it can locate the obstacle's position. It simulates obstacles in the blind spot of the vehicle's side view during actual driving. By recording data, the radar's speed of identifying obstacles on the side of the vehicle can be tested, as well as the accuracy of the radar's obstacle location. The data can be used to determine the actual degree of assistance the radar provides to the driver in actual driving.

[0020] 4. By continuously changing the size of obstacles, users can test the radar's ability to identify obstacles. By recording whether the radar can promptly identify obstacles of different sizes, the specific radiation range of the radar can be determined. By comparing the test data, the radar's sensitivity to identifying obstacles within its radiation range can be determined. Attached Figure Description

[0021] Figure 1 This is a frontal perspective view of the three-dimensional structure of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the sub-test component one in this invention;

[0023] Figure 3 This is a partial three-dimensional connection structure diagram of the sub-test component one in this invention;

[0024] Figure 4 This is a three-dimensional connection structure diagram of the placement mechanism in this invention;

[0025] Figure 5 This is a three-dimensional connection structure diagram of the transfer roller and drive wheel in this invention;

[0026] Figure 6 This is a three-dimensional structural view of the present invention from another angle;

[0027] Figure 7 This is a three-dimensional structural diagram of the secondary test component two in this invention;

[0028] Figure 8 This is a three-dimensional connection structure diagram of the winding roller and the second limiting block in this invention;

[0029] Figure 9 This is a partial three-dimensional bottom view of the sub-test component two in this invention.

[0030] The labels in the diagram represent:

[0031] 100. Main test assembly; 101. Substrate; 102. Slope plate; 103. Rotary roller;

[0032] 200. Secondary test component 1; 201. Limiting track 1; 202. Limiting groove 1; 203. Limiting block 1; 204. Placement mechanism; 2041. Placement frame; 2042. Fixing plate; 2043. Locking block; 205. Connecting rod; 206. Drive wheel; 207. Belt;

[0033] 300. Secondary test component 2; 301. Second limiting track 2; 302. Second limiting groove 2; 303. Second limiting block 2; 304. Winding roller; 305. Pull rope; 306. Mounting column; 307. Magnet; 308. Transmission rod; 309. Elastic rope; 310. One-way rotating shaft. Detailed Implementation

[0034] 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.

[0035] The present invention will be further described below with reference to embodiments.

[0036] This embodiment provides an automotive radar testing device, such as... Figures 1-9 As shown, it includes a main test assembly 100, which includes a ramp 102. The ramp 102 is fixed to the front side of the substrate 101. Two rollers 103 are rotatably connected to the front side of the top of the substrate 101. Sub-test assemblies 200 are provided on both sides of the substrate 101.

[0037] The sub-test component 200 includes a limiting track 201 and a placement mechanism 204. The placement mechanism 204 is used to fix obstacles of different types and shapes. The limiting track 201 limits the movement trajectory of the placement mechanism 204 and the obstacles thereon. The limiting track 201 is wavy. The sub-test component 200 is driven by the ramp 102 to move the placement mechanism 204 and the obstacles thereon up and down along the wavy limiting track 201. The sub-test component 200 also drives the obstacles to move back and forth in a cyclical manner.

[0038] As a preferred embodiment of this example, Figures 1-9 As shown, the placement mechanism 204 includes a placement frame 2041, which is located on the side of the limiting track 201 away from the substrate 101. The placement frame 2041 is fixedly connected to the limiting block 203 on the same side. Fixing plates 2042 are fixed on both sides of the side of the placement frame 2041 away from the substrate 101. The fixing plates 2042 are mirror-distributed. A locking block 2043 engages with the opposite end of the fixing plate 2042. The locking block 2043 engages the opposite ends of the fixing plates 2042 until they are in contact with each other. The fixing plates 2042 are made of elastic material.

[0039] As a preferred embodiment of this example, Figures 1-9 As shown, a limiting groove 202 is provided through the front of the limiting track 201. The limiting groove 202 has the same shape as the limiting track 201. A limiting block 203 is slidably connected inside the limiting groove 202.

[0040] One of the rollers 103 has a connecting rod 205 fixed inside. Both ends of the connecting rod 205 extend to both sides of the substrate 101. Both sides of the substrate 101 are rotatably connected to the front and rear positions of the drive wheel 206. Both ends of the connecting rod 205 are fixedly connected to the drive wheel 206 at the corresponding positions.

[0041] Both sides of the substrate 101 are provided with belts 207, which surround the surface of the drive wheel 206 on the same side. The belts 207 are made of tough rubber material.

[0042] Compared with existing authorized patents and devices with the same or similar technologies, the following effects are achieved:

[0043] 1: Simulate obstacles in the blind spot of the vehicle's side during actual driving. By recording data, the speed at which the radar can identify obstacles on the side of the vehicle can be tested, as well as the accuracy of the radar in locating obstacles. The data can be used to determine the actual level of assistance the radar provides to the driver in real driving.

[0044] 2: By recording whether the radar can promptly identify obstacles of different sizes, the specific radiation range of the radar can be determined. By comparing the test data, the radar's sensitivity to identifying obstacles within its radiation range can be determined.

[0045] At other levels, this embodiment also provides an automotive radar testing device, such as... Figures 1-9 As shown, a secondary test component 300 is provided on the back side of the substrate 101. The secondary test component 300 includes a limiting track 301. There are two limiting tracks 301. The two limiting tracks 301 are fixedly connected to the two sides of the substrate 101 respectively. A limiting groove 302 is opened through the surface of the limiting track 301. A limiting block 303 is slidably connected inside the limiting groove 302.

[0046] Both ends of the roller 103 near the secondary test component 300 are equipped with unidirectional rotating shafts 310. On the side of the unidirectional rotating shaft 310 away from the roller 103, a winding roller 304 is fixedly connected. On the side of the winding roller 304 away from the substrate 101, a pull rope 305 is fixedly connected. One end of the pull rope 305 is fixedly connected to the limiting block 303 on the same side. The unidirectional rotating shaft 310 is a known technology. The unidirectional rotating shaft 310 can only rotate unidirectionally with the roller 103 as a reference.

[0047] As a preferred embodiment of this example, Figures 1-9 As shown, a mounting post 306 is provided in the middle of the second track 301, and a transmission rod 308 is fixedly connected in the middle of the mounting post 306. Both ends of the transmission rod 308 are rotatably connected to the second limiting block 303 on the same side. A magnet 307 is fixedly connected to the rear of the middle of the second track 301. A placement mechanism 204 is also fixedly connected at equal intervals on the surface of the mounting post 306. The placement mechanism 204 is made of metal iron.

[0048] Elastic ropes 309 are provided on both sides below the magnet 307. One end of the elastic rope 309 is fixedly connected to the magnet 307, and the other end of the elastic rope 309 is fixedly connected to the transmission rod 308.

[0049] Compared with existing authorized patents and devices with the same or similar technologies, the following effects are achieved:

[0050] 1. This device uses obstacles with sound-absorbing and light-absorbing materials to simulate actual driving conditions and test whether the radar can respond sensitively to such obstacles. This effectively exposes the radar's shortcomings and prevents the radar from being unable to effectively receive sound and light waves when pedestrians are wearing dark-colored or cotton clothing with sound-absorbing and light-absorbing properties, thus avoiding potential safety hazards.

[0051] 2. Unlike traditional testing methods that rely on human drivers to continuously simulate tests, this method greatly improves testing efficiency and maintains the same speed for each test, thus enhancing the persuasiveness of the test data.

[0052] The complete working principle and process described above are as follows:

[0053] Please refer to Figures 1-9 When in use, the user first drives the vehicle from the ramp 102 onto the base plate 101, and places the front wheels of the vehicle between the two rollers 103. The vehicle is then fixed to the base plate 101 by a locking device. The vehicle throttle is fixed by the throttle of the car, so that the vehicle is in a driving state and maintains the set speed.

[0054] In the secondary test component 200, the user places obstacles of different volumes inside the placement frame 2041, which are then secured by a locking block 2043 and two fixing plates 2042. The two fixing plates 2042 clamp and fix the obstacles. The rotation of the vehicle's front wheels drives two rotating rollers 103 to rotate, which in turn drives a connecting rod 205 to rotate. The connecting rod 205 then drives a drive wheel 206 to rotate. The drive wheel 206 contacts a belt 207, and the friction between them drives the belt 207 to rotate. (Reference) Figure 5 It is known that the limiting block 203 is fixedly connected to the side of the belt 207. The belt 207 drives the limiting block 203 to move simultaneously. The limiting block 203 moves inside the limiting groove 202 and is driven to rise and fall by the wave shape of the limiting groove 202. Because the limiting block 203 is fixedly connected to the placement frame 2041, the limiting block 203 drives the entire placement mechanism 204 and the obstacles on it to rise and fall and keep moving forward. When the placement mechanism 204 and the obstacles are continuously restricted by the limiting groove 202, they move sequentially from the trough to the peak and then back to the trough. The above movement process is repeated by the belt 207. The vehicle side radar is tested by continuously changing the position of the obstacles on the side of the vehicle. The recorder records whether the radar can accurately identify the obstacles and the position of the obstacles. The recognition accuracy and radiation range of the radar are further tested by changing the volume of the obstacles on the placement mechanism 204.

[0055] In the second sub-test component 300, the surface of the mounting post 306 is also equidistantly fixed with placement mechanisms 204. Placement mechanisms 204 are made of iron. Users place obstacles of different shapes and materials onto the placement mechanisms 204 on the mounting post 306. Following the same principle as the placement mechanism 204 in the first sub-test component 200, the obstacles are also fixed by the placement mechanism 204. (Refer to...) Figure 5 During the rotation of the rotating roller 103, the one-way rotating shaft 310 is driven to rotate, which in turn drives the winding roller 304 to rotate. When the winding roller 304 rotates, the pull rope 305 is wound around it. The winding roller 304 pulls the limiting block 303 to move closer to the base plate 101. The limiting block 303 drives the transmission rod 308, the mounting post 306, and the placement mechanism 204 on the mounting post 306 to move in the same direction, causing the obstacle on the placement mechanism 204 to move closer to the vehicle on the base plate 101. Because the rotation speed of the rotating roller 103 is the same as the rotation speed of the vehicle wheel hub, which is the initially set vehicle speed, the rotating roller 103, through winding... The speed at which the obstacle is pulled by the winding roller 304 and the pull rope 305 is the same as the vehicle speed. As the obstacle approaches the vehicle, the radar's recognition distance is tested, as well as whether the vehicle can trigger the automatic avoidance or automatic braking system in time. When the transmission rod 308 moves, the elastic rope 309 is stretched and deformed. When the vehicle triggers automatic avoidance or automatic braking, the vehicle will stop. After the wheels brake, the rotating roller 103 stops rotating. Because the rotating roller 103 and the winding roller 304 are connected by a one-way rotating shaft 310, and the one-way rotating shaft 310 is a known technology, the one-way rotating shaft 310 can only rotate unidirectionally with the rotating roller 103 as a reference. The rotation direction of the 10th rotating shaft is opposite to the rotation direction of the rotating roller 103 driven by the wheel. After the rotating roller 103 drives the winding roller 304 to stop rotating, the unidirectional rotating shaft 310 is stretched and deformed by the elastic rope 309. At this time, the elastic rope 309 drives the above components to move in the opposite direction until they return to their initial position. Because the transmission rod 308 and the limiting block 2 303 are rotatably connected, the mounting post 306, the transmission rod 308, the placement mechanism 204 and the obstacles on it move in the direction away from the base plate 101 until the limiting block 2 303 is blocked by the limiting groove 2 302 and stops. At this time, the inertia will drive the mounting post 306, the transmission rod 308, the placement mechanism 204 and the obstacles on it to move away from the base plate 101. The mechanism 204 and the obstacles on it rotate and deflect. Because the placement mechanism 204 is made of metal iron, the placement mechanism 204 closest to the magnet 307 is attracted by the magnet 307, so that the four placement mechanisms 204 return to a horizontal state. That is, the four placement mechanisms 204 on the mounting column 306 form a right cross. This changes the type of obstacle facing the vehicle in each movement and keeps the obstacles in a parallel position, ensuring the realism of the test. By continuously changing the type of obstacle, it can detect the application of the light waves or sound waves emitted by the radar on different types of obstacles, and also test the radar's recognition distance and accuracy under different conditions.

[0056] 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 vehicle radar testing device, comprising: The main test assembly (100) includes a ramp (102) fixed to the front side of a substrate (101), and two rotating rollers (103) are rotatably connected to the front side of the top of the substrate (101). The main test assembly (100) is characterized in that a secondary test assembly (200) is provided on both sides of the substrate (101). The sub-test component 1 (200) includes a limiting track 1 (201) and a placement mechanism (204). The placement mechanism (204) is used to fix obstacles of different types and shapes. The limiting track 1 (201) limits the movement trajectory of the placement mechanism (204) and the obstacles thereon. The limiting track 1 (201) is wavy. The sub-test component 1 (200) is driven by the ramp (102) to move the placement mechanism (204) and the obstacles thereon up and down along the wavy limiting track 1 (201). The sub-test component 1 (200) also drives the obstacles to move back and forth in a cyclical manner.

2. The automotive radar testing device according to claim 1, characterized in that: The front of the limiting track 1 (201) is provided with a limiting groove 1 (202), the limiting groove 1 (202) has the same shape as the limiting track 1 (201), and a limiting block 1 (203) is slidably connected inside the limiting groove 1 (202).

3. The automotive radar testing device according to claim 1, characterized in that: The placement mechanism (204) includes a placement frame (2041), which is located on the side of the limiting track (201) away from the substrate (101). The placement frame (2041) is fixedly connected to the limiting block (203) on the same side. Fixing plates (2042) are fixed on both sides of the placement frame (2041) away from the substrate (101). The fixing plates (2042) are mirror-distributed, and a locking block (2043) is engaged at the opposite end of the fixing plate (2042).

4. The automotive radar testing device according to claim 1, characterized in that: One of the rollers (103) has a connecting rod (205) fixed inside. Both ends of the connecting rod (205) extend to both sides of the substrate (101). Both sides of the substrate (101) are rotatably connected to drive wheels (206) at the front and rear positions. Both ends of the connecting rod (205) are fixedly connected to the drive wheels (206) at the corresponding positions.

5. The automotive radar testing device according to claim 1, characterized in that: Both sides of the substrate (101) are provided with belts (207), and the belts (207) are all wrapped around the surface of the drive wheel (206) on the same side. The belts (207) are made of tough rubber material.

6. The automotive radar testing device according to claim 1, characterized in that: The back of the substrate (101) is provided with a secondary test component (300). The secondary test component (300) includes a limiting track (301). There are two limiting tracks (301). The two limiting tracks (301) are fixedly connected to the two sides of the substrate (101) respectively. A limiting groove (302) is opened through the surface of the limiting track (301). A limiting block (303) is slidably connected inside the limiting groove (302).

7. The automotive radar testing device according to claim 6, characterized in that: Both ends of the rotating roller (103) near the side of the secondary test component (300) are equipped with unidirectional rotating shafts (310). On the side of the unidirectional rotating shaft (310) away from the rotating roller (103), a winding roller (304) is fixedly connected. On the side of the winding roller (304) away from the substrate (101), a pull rope (305) is fixedly connected. One end of the pull rope (305) is fixedly connected to the limiting block (303) on the same side.

8. The automotive radar testing device according to claim 6, characterized in that: A mounting post (306) is provided in the middle of the second limiting track (301), and a transmission rod (308) is fixedly connected in the middle of the mounting post (306). Both ends of the transmission rod (308) are rotatably connected to the second limiting block (303) on the same side. A magnet (307) is fixedly connected to the rear of the middle of the second limiting track (301).

9. The automotive radar testing device according to claim 8, characterized in that: Elastic ropes (309) are provided on both sides below the magnet (307). One end of the elastic rope (309) is fixedly connected to the magnet (307), and the other end of the elastic rope (309) is fixedly connected to the transmission rod (308).

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