A trailer-towed transport system for ADAS testing

Abstract

This utility model relates to a trailer-mounted transport system for ADAS testing, comprising a guide rail module, a pallet module, a detachment module, and a buffer module. An inflatable target object is fixed to the upper part of the pallet module, and the lower part is slidably connected to the guide rail module, forming a temporary rigid unit with it via the detachment module. A buffer module is provided at the end of the guide rail module along the direction of movement after impact. The guide rail module is fixed to the towing vehicle hook via a trailer hitch connector. This application, through the coordinated design of the guide rail module, pallet module, detachment module, and buffer module, and the use of a rigid rail connection to effectively limit the pallet's movement trajectory, achieves the testing requirements of stable movement trajectory and precise uniform deceleration during high-speed towing, while also protecting the test vehicle and target object through buffering and force dissipation during impact, comprehensively improving the safety and reliability of ADAS testing.

Description

Technical Field

[0001] This utility model relates to the field of automotive testing technology, specifically to a trailer-mounted transport system for ADAS testing. Background Technology

[0002] As intelligent driving technology rapidly evolves to higher levels, the functional safety and reliability of Advanced Driver Assistance Systems (ADAS) have become a core focus of the industry. Corresponding testing regulations are also continuously iterating and upgrading, especially in testing standards for the critical and dangerous scenario of high-speed rear-end collisions, which impose stringent requirements on the performance limits and safety assurance capabilities of the equipment. According to the latest regulations, high-speed rear-end collision scenarios must simulate the complex working conditions of a "dynamic target vehicle" in real-world roads. The test vehicle must travel at a high speed of 130 km / h, while the target vehicle must begin uniform deceleration from an initial speed of 130 km / h, ultimately resulting in a collision between the rear vehicle and the decelerating target vehicle. More importantly, the entire testing process must not only accurately collect response data from the ADAS system (especially the Automatic Emergency Braking (AEB) system), but also strictly protect the safety of the test vehicle (avoiding damage to the front structure that could affect subsequent testing) and the simulated driver inside, eliminating secondary risks caused by equipment failure during the collision.

[0003] However, current mainstream testing solutions mostly involve a passenger car towing an inflatable hose to drag the air-supported membrane target vehicle. This solution has three major drawbacks in practical application, making it difficult to meet the testing requirements after regulatory upgrades: First, the test preparation process is extremely cumbersome. Before each test, a special air pump must be used to inflate the air-supported membrane target vehicle and the more than twenty sections of inflatable hose. After inflation, hose support frames must be installed section by section (to prevent the hoses from tearing and leaking due to their own weight during high-speed towing). The entire preparation process usually takes more than one hour, severely reducing testing efficiency. Second, the inflatable hose itself lacks rigid support. When towed at high speeds (especially exceeding 80 km / h), it is easily affected by airflow disturbances and differences in ground flatness, resulting in problems such as lateral swaying and trajectory deviation. It cannot accurately simulate the smooth motion of a real vehicle, leading to a significant reduction in the accuracy and repeatability of test data. Third, due to the flexible nature of the hose, the towing vehicle cannot achieve the required 3 m / s² speed by uniformly decelerating itself. When the tractor brakes, the hose is prone to stretching and shaking, and the deceleration process of the target vehicle exhibits non-linear fluctuations, which does not meet the dynamic accuracy requirements of the test scenario and thus the test results cannot be recognized by regulations. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a trailer-towed transportation system for ADAS testing.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A trailer-mounted transport system for ADAS testing includes a guide rail module, a pallet module, a detachment module, and a buffer module. The upper part of the pallet module is fixed with an inflatable target object, and the lower part is slidably connected to the guide rail module. The pallet module can form a temporary rigid whole with the guide rail module through the detachment module. The guide rail module is provided with a buffer module at its end along the direction of movement after the pallet module is impacted. The guide rail module is fixed to the towing vehicle hook through a trailer hook connector.

[0007] The beneficial effects of this utility model are:

[0008] Through the collaborative design of the guide rail module, tray module, disengagement module and buffer module, and the use of rigid rail connection to effectively limit the movement trajectory of the tray, it not only meets the testing requirements of stable movement trajectory and precise uniform deceleration during high-speed towing, but also protects the test vehicle and target object through buffering and unloading during impact, thus comprehensively improving the safety and reliability of ADAS testing.

[0009] Furthermore, the guide rail module includes several guide rail sections, which are assembled by bolts, and rollers are mounted on the bottom of the guide rails via pins. This assembly method facilitates disassembly and transportation of the guide rails, and the rollers reduce friction between the guide rails and the ground, allowing the guide rail vehicle to move more smoothly during traction.

[0010] Furthermore, the pallet module includes a pallet, which is L-shaped and assembled from a base plate and a baffle. Anti-collision blocks are fixedly installed on the side walls of the baffle, and a sliding unit and an anti-tipping unit are fixedly installed on the bottom of the base plate. The sliding unit slides in cooperation with the guide rail, and the anti-tipping unit restricts the pallet from tipping over.

[0011] Furthermore, the sliding unit includes a rear roller assembly and a front roller assembly, which are fixedly connected to the base plate via mounting brackets and bolts. The rear roller assembly and the front roller assembly, as sliding units, contact and roll with the guide rail, resulting in less rolling friction compared to other sliding methods.

[0012] Furthermore, the anti-tipping unit includes a front anti-tipping baffle and a rear anti-tipping baffle, which are arranged in a square groove shape and fixedly connected to the base plate by bolts. When the pallet is subjected to a lateral force and has a tendency to tilt, the square groove-shaped anti-tipping baffle can limit the tilt angle of the pallet, thereby effectively preventing the pallet from tipping over.

[0013] Furthermore, a limiter is also fixedly installed at the bottom of the base plate. The limiter can restrict the sliding range of the tray on the guide rail.

[0014] Furthermore, the disengagement module includes a docking seat, a magnetic seat, a spring rod, a base, a graphite bushing, and a spring. The spring rod is slidably mounted inside the base via the graphite bushing. The base is fixed to the bottom of the base plate by bolts. A spring is located on the outer side of the spring rod between the two bases, and a magnetic seat is fixed to the end of the spring rod. The docking seat is fixed to the guide rail via a connecting rod and engages with the magnetic seat. The design of the disengagement module allows the tray and the guide rail to form a temporary rigid whole. Under normal traction and deceleration conditions, the magnetic seat and the docking seat engage, and the target object can be uniformly decelerated through the uniform deceleration of the traction vehicle. When the target object is impacted, the instantaneous force is greater than the magnetic force, the disengagement mechanism disengages, and the tray can slide along the guide rail. This reduces the impact force of the test vehicle on the target object, protects the test vehicle from damage to the front, and also ensures the safety of the test personnel.

[0015] Furthermore, the buffer module includes a shock cylinder, a buffer spring, and a buffer frame. The shock cylinder and the buffer spring are fixed to the buffer frame via connecting seats. The buffer frame is fixedly mounted on a guide rail and connected to the tractor via a trailer hitch connector. When the pallet slides along the guide rail and impacts the buffer module, the pallet contacts the shock cylinder. The buffer spring absorbs and buffers the impact force, converting the impact energy into the elastic potential energy of the spring, thereby reducing the impact on the equipment and test vehicle.

[0016] Furthermore, the buffer module also includes a friction plate installed at the bottom of the base plate. It can form a buffer by frictional contact with the surface of the guide rail after the pallet is detached by an impact and slides along the guide rail. It works in conjunction with components such as the buffer spring to enhance the buffering effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the guide rail module structure according to an embodiment of the present utility model;

[0019] Figure 3 , Figure 4 This is a schematic diagram of the tray module and detachment module according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the buffer module structure according to an embodiment of the present utility model;

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Base plate, 2. Connecting rod, 3. Rear roller assembly, 4. Limiter, 5. Rear anti-roll baffle, 6. Docking seat, 7. Magnetic seat, 8. Spring rod, 9. Graphite bushing, 10. Base, 12. Spring, 13. Front anti-roll baffle, 15. Front roller assembly, 16. Baffle, 17. Anti-collision block, 18. Friction plate, 19. Guide rail, 20. Roller, 21. Impact cylinder, 22. Buffer spring, 23. Buffer frame, 24. Trailer hook connector, 100. Inflatable target, 200. Guide rail module, 300. Pallet module, 400. Disengagement module, 500. Buffer module. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 technology based on the specific circumstances.

[0026] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0027] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0028] like Figures 1 to 5 As shown, this embodiment provides a trailer-towed transport system for ADAS testing, including a guide rail module 200, a pallet module 300, a detachment module 400, and a buffer module 500. An inflatable target object 100 is fixed to the upper part of the pallet module 300, and its lower part is slidably connected to the guide rail module 200, forming a temporary rigid whole with the guide rail module 200 via the detachment module 400. The guide rail module 200 has a buffer module 500 at its end along the direction of movement after impact with the pallet module 300. The guide rail module 200 is fixed to the towing vehicle hook via a trailer hook connector 24. Specifically:

[0029] The guide rail module 200 includes several guide rail sections 19, which are bolted together. Rollers 20 are mounted on the bottom of each guide rail 19 via pins. This assembly method facilitates the disassembly and transportation of the guide rails 19, enabling easy transport of the equipment to different testing sites and rapid on-site assembly, thus improving the equipment's flexibility and mobility. The rollers 20 reduce friction between the guide rails 19 and the ground, allowing the guide rail 19 to move more smoothly during traction, reducing the power required for traction, and also contributing to improved stability of the railcar's movement.

[0030] The tray module 300 includes an L-shaped tray assembled from a base plate 1 and a baffle 16. Anti-collision blocks 17 are fixedly installed on the side walls of the baffle 16. A sliding unit and an anti-tipping unit are fixedly installed on the bottom of the base plate 1, and the sliding unit slides in conjunction with a guide rail 19. The anti-tipping unit prevents the tray from tipping over. The L-shaped structure provides stable support and protection for the inflatable target fixed on the upper part of the tray, preventing displacement or damage to the target due to collisions or other external forces during testing. The anti-collision blocks absorb and buffer impact forces when the tray collides with other objects, further protecting the tray and the target, while also reducing damage to other equipment in the testing environment.

[0031] In this embodiment, the sliding unit includes a rear roller assembly 3 and a front roller assembly 15, which are fixedly connected to the base plate 1 by mounting brackets and bolts. The rear roller assembly 3 and the front roller assembly 15 serve as sliding units, contacting and rolling with the guide rail 19. Compared with other sliding methods, the rolling friction is smaller, which can more effectively reduce the wear between the pallet and the rail and extend the service life of the equipment.

[0032] In this embodiment, the anti-tilt unit includes a front anti-tilt baffle 13 and a rear anti-tilt baffle 5, which are arranged in a square groove shape and are fixedly connected to the base plate 1 by bolts. When the pallet is subjected to a lateral force and has a tendency to tilt, the square groove-shaped anti-tilt baffle can limit the tilt angle of the pallet, thereby effectively preventing the pallet from tipping over.

[0033] In this embodiment, a limiter 4 is also fixedly installed at the bottom of the base plate 1, mounted on one side of the sliding unit. By contacting the guide rail, the limiter 4 can limit the sliding range of the tray on the guide rail 19, thereby ensuring the safety and accuracy of the test. For example, when the target object slides along the track after being impacted, the limiter can prevent the tray from sliding off the end of the track, avoiding accidents.

[0034] The disengagement module 400 includes a docking seat 6, a magnetic seat 7, a spring rod 8, a base 10, a graphite bushing 9, and a spring 12. The spring rod 8 is slidably mounted inside the base 10 via the graphite bushing 9. The base 10 is fixed to the bottom of the base plate 1 by bolts. A spring 12 is located on the outer side of the spring rod 8 between the two bases 10, and a magnetic seat 7 is fixed to the end of the spring rod 8. The docking seat 6 is fixed to the guide rail 19 via a connecting rod 2 and is correspondingly attracted to the magnetic seat 7. The design of the disengagement module 400 allows the tray and the guide rail 19 to form a temporary rigid whole. Under normal traction and deceleration conditions, the attraction between the magnetic seat 7 and the docking seat 6 allows the target object to decelerate uniformly through the uniform deceleration of the traction vehicle, meeting the deceleration requirements of regulations. When the target object is impacted, the instantaneous force is greater than the magnetic force, the disengagement mechanism disengages, and the tray can slide along the guide rail 19. This reduces the impact force of the test vehicle on the target object, protects the test vehicle from damage to the front, and also ensures the safety of the test personnel.

[0035] The buffer module 500 includes a shock cylinder 21, a buffer spring 22, and a buffer frame 23. The shock cylinder 21 and the buffer spring 22 are fixed to the buffer frame 23 via a connecting seat. The buffer frame 23 is fixedly mounted on the guide rail 19 and is connected to the tractor via a trailer hitch connector 24. When the pallet slides along the guide rail 19 and impacts the buffer module 500, the pallet contacts the shock cylinder 21. The buffer spring 22 absorbs and buffers the impact force, converting the impact energy into the elastic potential energy of the spring, thereby reducing the impact on the equipment and test vehicle and protecting the safety of the test equipment and test vehicle.

[0036] In this embodiment, the buffer module 500 also includes a friction plate 18, which is fixedly installed at the bottom of the base plate 1. After the pallet is detached by an impact, it can form a buffer by frictional contact with the surface of the guide rail 19 during the sliding process, further converting the kinetic energy of the pallet into heat energy to reduce the sliding speed. The friction plate 18 and other components such as the buffer spring 22 work together to enhance the buffering effect.

[0037] The working principle of the above structure:

[0038] I. Test Preparation Phase: Rapid Assembly and Target Fixation

[0039] 1. Guide rail assembly: Several detachable guide rail sections are spliced ​​together with bolts to form a rigid guide rail. The head of the guide rail is fixed to the hook of the tractor vehicle through the trailer hook connector.

[0040] 2. Installation of the pallet and the target object: Secure the inflated target object (such as a simulated car airbag) onto the pallet; the pallet is supported on the guide rail by the front and rear roller assemblies at the bottom, while the front and rear anti-tipping baffles hold the guide rail to prevent the pallet from tipping over.

[0041] 3. Magnetic locking: The magnetic seat on the tray and the docking seat on the guide rail are attracted by strong magnetic force, so that the tray, the tractor and the guide rail form a temporary rigid whole.

[0042] II. Normal Dragging Phase: Rigid Constraint Trajectory and Compliance Deceleration

[0043] 1. High-speed and stable towing: When the tractor drives the guide rail, pallet and target object at a maximum speed of 130km / h, the rigid guide rail forcibly restricts the movement trajectory of the pallet, avoiding the swaying and uncertain trajectory problems of traditional air hoses, and accurately simulating the stable driving state of real vehicles.

[0044] 2. Compliant Uniform Deceleration: When simulating "target vehicle deceleration" (such as the target vehicle decelerating from 130km / h in a high-speed rear-end collision scenario), the tractor performs uniform deceleration. At this time, the strong magnetic force of the magnetic seat counteracts the inertia of the tray, ensuring that the tray does not detach from the guide rail and the tractor, and simultaneously achieving uniform deceleration of 3m / s².

[0045] III. Impact Buffer Phase: Protecting the Test Vehicle and the Target Object

[0046] When the test vehicle collided with the target at 130 km / h, a dual protection mechanism was triggered:

[0047] 1. Disengagement and force relief: When the instantaneous impact force is greater than the magnetic force of the magnetic base, the magnetic lock between the tray and the guide rail is released, and the tray slides forward along the guide rail, preventing the test vehicle from being damaged due to impact with the rigid structure.

[0048] 2. Multi-stage buffer deceleration: During the sliding process of the pallet, the bottom friction plate rubs against the guide rail, converting some of the kinetic energy into heat energy, thus initially decelerating the pallet; when the pallet slides to the end of the guide rail, it impacts the buffer module, and the buffer spring further absorbs the remaining kinetic energy, protecting the target object (airbag) from being ruptured.

[0049] IV. Automatic Reset Phase: Quickly prepare for the next test

[0050] After the impact, the tray slides back to its original position along the guide rail under its own inertia and the rebound force of the buffer spring of the buffer module. When the magnetic seat of the tray comes into contact with the docking seat of the guide rail again, the strong magnetic force re-attaches and locks it, and the system returns to the initial dragging state. The next test can be started quickly without manual intervention.

[0051] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A trailer towed transport system for ADAS testing, characterized by, It includes a guide rail module, a tray module, a detachment module, and a buffer module; the upper part of the tray module is fixed with an inflatable target object, and the lower part is slidably connected to the guide rail module, and can form a temporary rigid whole with the guide rail module through the detachment module; the guide rail module is provided with a buffer module at the end along the direction of movement after the impact of the tray module, and the guide rail module is fixed to the towing vehicle hook through a trailer hook connector.

2. A trailer towed transport system for ADAS testing according to claim 1, characterized in that, The guide rail module includes several guide rail sections, which are spliced ​​together by bolts, and rollers are installed at the bottom of the guide rails by pins.

3. A trailer towed transport system for ADAS testing according to claim 1, characterized in that, The pallet module includes a pallet, which is L-shaped and assembled from a base plate and a baffle. Anti-collision blocks are fixedly installed on the side walls of the baffle. A sliding unit and an anti-tipping unit are fixedly installed on the bottom of the base plate. The sliding unit slides in cooperation with the guide rail, and the anti-tipping unit prevents the pallet from tipping over.

4. A trailer towed system for ADAS testing according to claim 3, characterized in that, The sliding unit includes a rear roller assembly and a front roller assembly, which are fixedly connected to the base plate by mounting brackets and bolts.

5. A trailer towed system for ADAS testing according to claim 3, characterized in that, The anti-roll unit includes a front anti-roll baffle and a rear anti-roll baffle, which are arranged in a square groove shape and are fixedly connected to the base plate by bolts.

6. A trailer towed system for ADAS testing according to claim 3, characterized in that, A limiter is also fixedly installed at the bottom of the base plate.

7. A trailer towed transport system for ADAS testing according to claim 1, characterized in that, The disengagement module includes a docking seat, a magnetic seat, a spring rod, a base, a graphite bushing, and a spring. The spring rod is slidably installed in the base through the graphite bushing. The base is fixed to the bottom of the base plate by bolts. A spring is provided on the outer side of the spring rod between the two bases. A magnetic seat is fixed at the end of the spring rod. The docking seat is fixed on the guide rail by a connecting rod and is attracted to the magnetic seat.

8. A trailer towed system for ADAS testing according to claim 1, characterized in that, The buffer module includes a shock cylinder, a buffer spring, and a buffer frame. The shock cylinder and the buffer spring are fixed to the buffer frame via a connecting seat. The buffer frame is fixedly installed on a guide rail and is connected to the tractor via a trailer hook connector.

9. A trailer towed system for ADAS testing according to claim 8, characterized in that, The buffer module also includes friction plates, which are installed at the bottom of the base plate.

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