A vehicle door soft target

Abstract

The utility model discloses a kind of vehicle door soft target, it is related to the technical field of intelligent driving auxiliary system test target, the soft target includes vehicle door body, rotary transmission shaft, driving motor and support column, vehicle door body is connected with rotary transmission shaft by magnetic attraction, rotary transmission shaft is fixed on the output shaft of driving motor, driving motor is installed on support column, driving motor is used to drive rotary transmission shaft rotation, and vehicle door body is rotated around support column by rotary transmission shaft to simulate the action and state of vehicle door opening and closing, restore the test scene under the real vehicle door opening state;The technical scheme in the utility model solves the problems, such as high cost and safety risk caused by lack of special soft vehicle door target in prior art, existing whole vehicle target cannot simulate vehicle door opening action and using real vehicle door to test in prior art, help to improve the identification ability and response effect under vehicle door related scene.

Description

Technical Field

[0001] This utility model relates to the technical field of test targets for intelligent driving assistance systems (ADAS), and more specifically, to a soft target for a car door. Background Technology

[0002] With the rapid development of automotive intelligence and autonomous driving technologies, Automatic Emergency Braking (AEB) systems have become a core function in the field of vehicle active safety. AEB systems typically rely on multimodal perception hardware such as millimeter-wave radar, cameras, lidar, and infrared sensors to detect obstacles ahead and in the surrounding environment in real time, and automatically apply braking when a potential collision risk is identified, significantly reducing the traffic accident rate. Therefore, various intelligent driving functions must undergo extensive road testing and scenario simulation verification before mass production to ensure the reliability and safety of the system in complex traffic environments.

[0003] To ensure the safety, repeatability, and standardization of testing, major global automotive safety assessment systems generally use soft targets instead of real vehicles or pedestrians as test subjects. These soft targets typically have compressible and impact-resistant structures, and through specific material and structural designs, they closely resemble real objects in terms of visual characteristics, millimeter-wave radar reflection characteristics, infrared reflection characteristics, and motion behavior, in order to meet the testing requirements in multi-sensor fusion environments.

[0004] However, existing technologies still have shortcomings in constructing AEB test scenarios related to car door opening, mainly manifested in the following aspects: 1) Existing solutions do not specifically design software door targets. In most cases, the AEB function test is incomplete and cannot reproduce real car door opening scenarios. Currently, existing software targets are mostly used to simulate whole vehicles, pedestrians, or cyclists. There are no software door targets specifically designed to simulate the geometry, opening and closing dynamics, and perception characteristics (such as radar reflectivity, infrared reflectivity, visual characteristics, etc.) of real car doors. The lack of such scenario reproduction means that in risky scenarios such as a parked vehicle suddenly opening its door or a vehicle reversing to open its door, the AEB system cannot obtain comprehensive test verification, resulting in incomplete test coverage and an inability to accurately evaluate the system's recognition capability and response effect in car door-related scenarios. 2) Existing vehicle software targets are all monolithic structures, lacking independently controllable door components. This fails to meet the experimental requirements for simulating door opening actions, making it unsuitable for verifying vehicle recognition and braking performance in lateral risk scenarios, such as a neighboring vehicle suddenly opening its door or a door opening from the inside in a parking lot. 3) In the absence of software door targets, testing organizations must use real vehicles and have personnel actually open the doors for verification. This testing method is costly, and if the AEB system fails to recognize the door, it could lead to a collision between the test vehicle and the real door, posing a significant risk and making it difficult to achieve a large-scale, repeatable, standardized verification process. Utility Model Content

[0005] The purpose of this invention is to address the problems in the existing technology of lacking a dedicated software door target, the inability of existing whole vehicle targets to simulate door opening actions, and the high cost and safety risks of using real car doors for testing. This invention provides a software door target that can simulate the shape, radar and infrared reflection characteristics, and opening action state of a real car door, thus solving the problems of insufficient simulation and inability to fully cover door-related risk conditions in multi-sensor fusion scenarios of existing test vehicles. This software door target can be used for high-precision functional verification of the vehicle's automatic emergency braking (AEB) system, providing a highly reliable, highly realistic, and safe verification method for intelligent driving testing.

[0006] The technical solution of this utility model is: to provide a car door soft target object, which includes: a car door body, a magnetic connection assembly, a rotary transmission shaft, a drive motor and a support column;

[0007] One side of the car door body is magnetically connected to a vertically arranged rotating drive shaft via a magnetic connection assembly. The rotating drive shaft is fixed on the output shaft of a drive motor. The drive motor is fixed to a vertically arranged support column via a motor mounting bracket. Suction cups are provided at the upper and lower ends of the support column, and the support column is fixed to the side of a pre-set car target object via the suction cups at the upper and lower ends. The drive motor is used to drive the rotating drive shaft to rotate, and the rotating drive shaft drives the car door body to rotate around the vertical axis of the support column.

[0008] Furthermore, a frame assembly is provided inside the door body. The frame assembly includes two horizontal bars and one vertical bar. The two horizontal bars are horizontally arranged at the lower part of the door body and are spaced apart from each other by a predetermined distance. The vertical bar is vertically arranged and fixed to the side of the two horizontal bars away from the supporting column. The two ends of the vertical bar are fixedly connected to the ends of the two horizontal bars on one side respectively.

[0009] Furthermore, the exterior of the door body is wrapped with a skin, on which a typical car door pattern is drawn. A functional material layer is also set in the skin to simulate the reflective properties of a real car door.

[0010] Furthermore, the magnetic connection assembly includes a magnetic mounting plate and two sets of magnets. The magnetic mounting plate is vertically set and fixed to the side of the two crossbars near the support column. The two ends of the magnetic mounting plate are fixedly connected to the ends of the two crossbars on one side, and the magnetic mounting plate is tightly fitted to the side of the door body. The upper and lower ends of the magnetic mounting plate near the support column are respectively provided with grooves for accommodating magnets, and the two sets of magnets are respectively attracted into the two grooves.

[0011] Furthermore, the drive motor is a dual-shaft extension motor, with the two output shafts of the dual-shaft extension motor arranged in the vertical direction.

[0012] Furthermore, the rotary drive shaft includes two sets, which are vertically arranged and fixed on the upper and lower output shafts of the dual-shaft extension motor, respectively. The ends of the two sets of rotary drive shafts away from the drive motor are respectively fixed perpendicularly to two sets of magnets.

[0013] Furthermore, the support column includes a height adjusting screw, which includes an inner screw and an outer screw. One end of the inner screw is provided with an external thread, and the other end is equipped with a suction cup. One end of the outer screw is provided with an internal thread, and the other end is equipped with a suction cup. The inner screw is inserted into the outer screw to adjust the length of the height adjusting screw by rotation.

[0014] Furthermore, the support column also includes a support base, which is fixed to the outer wall of the outer screw and is used to install the drive motor.

[0015] Furthermore, limiting bosses are provided on the upper and lower sides of the support seat on the external screw, which are used to limit and fix the support seat in the vertical direction.

[0016] Furthermore, the drive motor is fixed to the support base via a motor mounting bracket and secured with bolts.

[0017] The beneficial effects of this utility model are:

[0018] First, the technical solution of this utility model designs a soft target object for a car door, comprising a door body, a rotary transmission shaft, a drive motor, and a support column. The door body is magnetically connected to the rotary transmission shaft, which is fixed on the output shaft of the drive motor. The drive motor is mounted on the support column. After the support column is fixed in position, the drive motor can control the rotary transmission shaft to rotate, thereby driving the door body to rotate around the support column, simulating the opening and closing actions and states of a real car door, and restoring the test scenario of a real car door in an open state. The technical solution of this utility model solves the problems of the lack of a dedicated soft target object for a car door in the prior art, the inability of existing whole vehicle target objects to simulate the opening action of a car door, and the high cost and safety risks caused by using real car doors for testing. The soft target object for a car door in this utility model is used for testing intelligent driving assistance systems, which can solve the problems of insufficient simulation of existing test vehicles in multi-sensor fusion scenarios and the inability to fully cover car door-related risk conditions, and helps to improve the recognition ability and response effect in car door-related scenarios.

[0019] Secondly, the technical solution of this utility model uses foam material to make the door body, and its shape and size are designed with reference to the shape and size of a real car door. The outside is covered with a skin with a functional material layer, which can simulate the shape, radar and infrared reflection characteristics of a real car door. Using foam material to make the door body is low cost, light weight and easy to replicate. The door body is equipped with a frame, which can be enclosed with the magnetic mounting plate in the magnetic connection assembly to form an overall closed frame structure, so as to provide stable support for the door body, enhance its overall strength and prevent deformation during opening and closing or collision. The door body is connected to the rotating drive shaft by magnetic attraction, and can be easily detached in the event of a collision during testing without being easily damaged.

[0020] Third, the technical solution of this utility model uses a drive motor to control the opening and closing of the car door body. During testing, the car door body can be rotated to any angle to reproduce the scene of a real car door at different opening angles. There is no need to manually adjust the angle for each test, making it convenient to use. The technical solution of this utility model also provides a support column for the car door body, and suction cups are set at the upper and lower ends of the support column. The body adopts a two-stage height adjustment screw, which can adjust the support height by turning. It has strong adjustability and is suitable for installation positions at different heights, improving the adaptability of the car door soft target object. Attached Figure Description

[0021] The advantages of the above and additional aspects of this utility model will become apparent and readily understood in the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the overall structure of a car door soft target object according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a magnetic connection assembly and a rotary transmission shaft according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the skeleton assembly according to an embodiment of the present invention;

[0025] Figure 4 This is a structural schematic diagram of a car door body according to an embodiment of the present utility model.

[0026] Among them, 1-door body, 11-frame assembly, 111-horizontal bar, 112-vertical bar, 2-magnetic connection assembly, 21-magnetic mounting plate, 211-groove, 22-magnet, 3-rotary drive shaft, 4-drive motor, 5-support column, 51-suction cup, 52-height adjustment screw, 521-inner screw, 522-outer screw, 53-support base. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0028] In the following description, many specific details are set forth in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0029] like Figure 1As shown, this embodiment provides a car door software target object, which includes: a car door body 1, a magnetic connection assembly 2, a rotary transmission shaft 3, a drive motor 4, and a support column 5.

[0030] One side of the car door body 1 is magnetically connected to the rotary drive shaft 3 via the magnetic connection assembly 2. The rotary drive shaft 3 is vertically arranged and fixed on the output shaft of the drive motor 4. The drive motor 4 is fixed on the vertically arranged support column 5 via the motor mounting bracket. The support column 5 is provided with suction cups 51 at both the upper and lower ends, and is fixed to the side of the preset car target object via the suction cups 51 at both ends. The drive motor 4 is used to drive the rotary drive shaft 3 to rotate, and the rotary drive shaft 3 drives the car door body 1 to rotate around the vertical axis of the support column 5 to simulate the opening and closing action and state of the car door.

[0031] The door body 1 is equipped with a frame assembly 11, which includes two horizontal bars 111 and one vertical bar 112. The two horizontal bars 111 are horizontally arranged at the lower part of the door body 1 and are spaced apart from each other by a predetermined distance. The vertical bar 112 is vertically arranged and fixed to the side of the two horizontal bars 111 away from the supporting column 5. The two ends of the vertical bar 112 are respectively fixedly connected to the ends of the two horizontal bars 111 on one side.

[0032] The exterior of the door body 1 is covered with a skin, on which common car door patterns are drawn to simulate the visual appearance characteristics of a real car door, so that it has the same recognition effect as the actual car door under visual sensors such as cameras. The skin can also be provided with functional material layers with specific electromagnetic reflectivity or infrared reflectivity (such as a thin metal coating, an infrared reflective film, or an infrared enhancement coating, etc.) to simulate the reflection characteristics of a real car door under millimeter-wave radar and infrared sensors.

[0033] The door body 1 is made of foam material. Its shape and size are designed with reference to the shape and size of a real car door. It can simulate the shape of a real car door and restore the outline structure and geometric features of a real car door. At the same time, foam material has the advantages of low cost, easy processing and molding, light weight, good compressibility, convenient handling and placement, and good cushioning performance in the event of a collision. It is suitable for AEB test scenarios with high safety requirements.

[0034] In this embodiment, when setting the door body 1, the shape of a common sedan door is selected as a reference, and its typical size range is determined by statistical analysis of the door dimensions of multiple car models. Based on this, a three-dimensional structural model is established according to the determined outline and size parameters, and the door body 1 is molded and manufactured accordingly. The length of the door body 1 is 1080±20 mm, the width is 1050±20 mm, and the thickness is 150±10 mm. This size range can match the standard shape characteristics of a real sedan door well.

[0035] The magnetic connection assembly 2 includes a magnetic mounting plate 21 and two sets of magnets 22. The magnetic mounting plate 21 is vertically set and fixed to the side of the two crossbars 111 near the support column 5. The two ends of the magnetic mounting plate 21 are fixedly connected to the ends of the two crossbars 111 on one side, and the magnetic mounting plate 21 is tightly fitted to the side of the door body 1. The upper and lower ends of the magnetic mounting plate 21 near the support column 5 are respectively provided with grooves 211 for accommodating the magnets 22. The two sets of magnets 22 are respectively attracted into the two grooves 211 to realize the detachable magnetic connection between the door body 1 and the rotating drive shaft 3, which not only ensures the stability during opening and closing, but also facilitates assembly and maintenance. The grooves 211 can limit and fix the magnets 22 to prevent the magnets from slipping or shifting during use, thereby ensuring the stable and reliable magnetic connection between the door body 1 and the rotating drive shaft 3.

[0036] It should be noted that the magnetic mounting plate 21 and the two horizontal bars 111 and one vertical bar 112 in the frame assembly 11 are connected to each other through their ends to form an overall closed frame structure, which can provide stable support for the door body 1, enhance the overall strength, and prevent deformation during opening and closing or collision.

[0037] The drive motor 4 is a dual-shaft extension motor, with the two output shafts of the dual-shaft extension motor set along the vertical direction.

[0038] The rotary drive shaft 3 includes two sets. The two sets of rotary drive shaft 3 are vertically arranged and fixed on the upper and lower output shafts of the dual-shaft extension motor, respectively. The ends of the two sets of rotary drive shaft 3 away from the drive motor 4 are respectively fixed perpendicularly to the two sets of magnets 22.

[0039] In this embodiment, a dual-shaft extension motor is used to install two sets of rotary drive shafts 3 to support the door body 1, which provides high structural strength and stability, ensuring that the door remains stable during opening and closing movements or under external forces, and is not prone to swaying or deformation. At the same time, the door body 1 is connected to the rotary drive mechanism by magnetic attraction, which allows it to detach smoothly in the event of a collision during the test without damaging the test vehicle or the door body 1 itself.

[0040] The support column 5 includes a height adjustment screw 52, ​​which includes an inner screw 521 and an outer screw 522. One end of the inner screw 521 is provided with an external thread, and the other end is equipped with a suction cup 51. One end of the outer screw 522 is provided with an internal thread, and the other end is equipped with a suction cup 51. The inner screw 521 is inserted into the outer screw 522. By rotating the inner screw 521, the length of the height adjustment screw 52 can be adjusted, thereby completing the raising or lowering or fine adjustment of the support height.

[0041] The support column 5 also includes a support base 53, which is fixed on the outer wall of the outer screw 522 and is used to install the drive motor 4. Limiting bosses are provided on the upper and lower sides of the support base 53 on the outer screw 522 to limit and fix the support base 53 in the vertical direction, preventing it from shifting or shaking during use and ensuring the stable installation of the drive motor 4.

[0042] In this embodiment, the support column 5 forms a top and bottom support structure through the height adjustment screw 11, which can be firmly installed on the upper and lower surfaces corresponding to the installation position on the side of the pre-set car target object.

[0043] The drive motor 4 is fixed to the support base 53 by the motor mounting bracket (rigidly fixed with bolts), so that its output shaft will not be displaced when it rotates, and can drive the door body 1 to rotate.

[0044] In this embodiment, the process of testing the Advanced Driver Assistance System (ADAS) using a car door as a software target object is as follows:

[0045] Select a test site and place the pre-prepared car target (an existing target can be used directly) in the test site. Set the support column 5 at the installation position on the side of the car target. Rotate the inner screw 521 so that the suction cups 51 at the upper and lower ends of the support column 5 are attached to the upper and lower surfaces corresponding to the installation position on the side of the target. Start the drive motor 4 and control its rotation. Use the drive motor 4 to drive the rotary transmission shaft 3 to rotate, and through the rotary transmission shaft 3, drive the door body 1 to rotate around the vertical axis where the support column 5 is located, so that the door body 1 rotates to a predetermined angle to simulate the opening action of a real car door.

[0046] After the test begins, the experimental vehicle is started and driven along the predetermined path, passing the side where the soft target object is located on the door. The driver assistance system of the experimental vehicle is then activated to verify whether the vehicle's driver assistance system can recognize the soft target object on the door and take safety measures such as alarm and emergency braking if necessary to actively avoid a collision.

[0047] The units in this utility model device can be merged, divided, or reduced according to actual needs.

[0048] In this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0049] The shapes of the components in the accompanying drawings are schematic and may differ from their actual shapes. The drawings are only used to illustrate the principle of this utility model and are not intended to limit this utility model.

[0050] Although the present invention has been disclosed in detail with reference to the accompanying drawings, it should be understood that these descriptions are merely exemplary and not intended to limit the application of the present invention. The scope of protection of the present invention is defined by the appended claims and may include various modifications, alterations, and equivalents made to the invention without departing from the scope and spirit of the present invention.

Claims

1. A soft target object for a car door, characterized in that, The door software target includes: door body (1), magnetic connection assembly (2), rotary transmission shaft (3), drive motor (4) and support column (5); One side of the car door body (1) is magnetically connected to the vertically arranged rotating drive shaft (3) through the magnetic connection assembly (2). The rotating drive shaft (3) is fixed on the output shaft of the drive motor (4). The drive motor (4) is fixed on the vertically arranged support column (5) through the motor mounting seat. The support column (5) is provided with suction cups (51) at the upper and lower ends respectively, and is fixed to the side of the pre-set car target object through the suction cups (51) at the upper and lower ends. The drive motor (4) is used to drive the rotating drive shaft (3) to rotate, and through the rotating drive shaft (3) it drives the car door body (1) to rotate around the vertical axis where the support column (5) is located.

2. The vehicle door software target object as described in claim 1, characterized in that, The door body (1) is equipped with a frame assembly (11). The frame assembly (11) includes two horizontal bars (111) and one vertical bar (112). The two horizontal bars (111) are horizontally arranged at the lower part of the door body (1) and spaced apart by a predetermined distance. The vertical bar (112) is vertically arranged and fixed to the side of the two horizontal bars (111) away from the supporting column (5). The two ends of the vertical bar (112) are fixedly connected to the ends of the two horizontal bars (111) on one side.

3. The vehicle door software target object as described in claim 1, characterized in that, The door body (1) is covered with a skin, on which a normal car door pattern is drawn. A functional material layer is also provided in the skin to simulate the reflective properties of a real car door.

4. The vehicle door software target object as described in claim 2, characterized in that, The magnetic connection assembly (2) includes a magnetic mounting plate (21) and two sets of magnets (22). The magnetic mounting plate (21) is vertically set and fixed on the side of the two crossbars (111) near the support column (5). The two ends of the magnetic mounting plate (21) are fixedly connected to the ends of the two crossbars (111) on one side respectively, and the magnetic mounting plate (21) is tightly attached to the side of the door body (1). The upper and lower ends of the magnetic mounting plate (21) near the support column (5) are respectively provided with grooves (211) for accommodating magnets (22), and the two sets of magnets (22) are respectively attracted in the two grooves (211).

5. The vehicle door software target object as described in claim 4, characterized in that, The drive motor (4) is a dual-shaft extension motor, and the two output shafts of the dual-shaft extension motor are set along the vertical direction.

6. The vehicle door software target object as described in claim 5, characterized in that, The rotary transmission shaft (3) includes two sets. The two sets of rotary transmission shafts (3) are vertically arranged and fixed on the upper and lower output shafts of the dual-shaft extension motor respectively. The ends of the two sets of rotary transmission shafts (3) away from the drive motor (4) are respectively vertically fixed to two sets of magnets (22).

7. The vehicle door software target object as described in claim 1, characterized in that, The support column (5) includes a height adjustment screw (52), which includes an inner screw (521) and an outer screw (522). One end of the inner screw (521) is provided with an external thread, and the other end is equipped with a suction cup (51). One end of the outer screw (522) is provided with an internal thread, and the other end is equipped with a suction cup (51). The inner screw (521) is inserted into the outer screw (522) to adjust the length of the height adjustment screw (52) by rotation.

8. The vehicle door software target object as described in claim 7, characterized in that, The support column (5) also includes a support base (53), which is fixed on the outer wall of the outer screw (522) and is used to install the drive motor (4).

9. The vehicle door software target object as described in claim 8, characterized in that, Limiting bosses are provided on the upper and lower sides of the support seat (53) on the external screw (522), and the limiting bosses are used to limit and fix the support seat (53) in the vertical direction.

10. The vehicle door software target object as described in claim 8, characterized in that, The drive motor (4) is fixed on the support base (53) by a motor mounting base and fastened with bolts.

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