Automobile active safety performance test system

Abstract

The invention relates to the technical field of vehicle testing, in particular to an automobile active safety performance testing system. The driving platform comprises a driving platform body, the driving platform body is connected with a remote control base station in a wireless communication mode, the driving platform body comprises a shell and a power system, the shell is in a trapezoid shape, and side plates on the upper portion of the shell are obliquely arranged. The shell is flat, and the periphery of the shell is a gentle slope, so that a to-be-tested automobile can pass through the shell, and the to-be-tested automobile is prevented from being damaged due to collision with the platform body; the mobile platform has a four-wheel steering function, a route can be freely planned, and the test scene and the flexibility of the test scene are improved; the test vehicle state detection platform has storage and calculation functions and provides motion state information of the test vehicle in real time; and remotely transmitting the calculated control instruction to the soft target object moving platform to enable the soft target object moving platform to operate according to the calculated decision route and speed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle testing, and particularly to an automotive active safety performance testing system. Background Art

[0002] Currently, automotive technologies are rapidly developing towards intelligence and automation. During the research, development, testing process of advanced driver assistance systems (ADAS) and future autonomous driving technologies, a safe, accurate and reliable auxiliary testing device is required to support the development, optimization, verification and improvement of related technologies.

[0003] During the development stage of autonomous driving technologies, a large amount of preliminary testing work needs to be carried out. One of the key tasks is to simulate that when a vehicle detects a pedestrian or a potential danger, the system assists the driver to achieve emergency braking. Through testing, it can be evaluated whether the sensors and control systems installed on autonomous vehicles can accurately identify the road environment, pedestrian status and potential dangers, and make correct responses in a timely manner, and at the same time verify the effectiveness and accuracy of their integrated algorithms.

[0004] Existing testing devices generally adopt the design of traction or belt drive, and usually require laying fixed moving tracks. Such devices can only achieve the linear movement of pedestrians, lack flexibility, and the movement speed of the dummy is uncontrollable. In addition, the design of traction ropes or drive belts occupies a large amount of lane space, which not only interferes with the normal passage of other vehicles, but also limits the diversity and authenticity of test scenarios. At the same time, existing devices usually cannot communicate effectively with test vehicles and traffic facilities, and it is difficult to adjust the movement posture and behavioral intention of the dummy test platform in real time according to the vehicle movement state, traffic signal changes and the operation conditions of roadside devices. These deficiencies directly affect the reliability of experimental data and reduce the accuracy of technology verification. In addition, existing devices often have a high delay during data transmission and rely heavily on cloud computing resources; the steering flexibility of the devices is poor; and the disassembly and replacement of soft targets are not convenient enough. These problems significantly limit the application effect of testing devices in the development and verification of autonomous driving technologies and urgently need to be optimized and improved. Therefore, we propose an automotive active safety performance testing system. Summary of the Invention

[0005] The purpose of the present invention is to provide an automotive active safety performance testing system to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] Automotive active safety performance test system, including a driving platform body, the driving platform body is connected to a remote control base station through wireless communication, the driving platform body includes a housing and a power system, the housing is trapezoidal, and the side plates on the upper part of the housing are all inclined; inside the housing, there are a driving device, a wireless communication device, a control device and a positioning device, the driving device, the wireless communication device, the control device and the positioning device are all electrically connected to the power system, and the driving device, the wireless communication device and the positioning device are all electrically connected to the control device.

[0008] Preferably, the wireless communication device transmits the position, moving speed and acceleration information of the driving platform body to the remote control base station in real time, and receives the control instructions of the remote control base station and the position, moving speed and acceleration information of the vehicle to be tested. The control device calculates the travel route and travel speed of the driving platform body according to the position, moving speed and acceleration information of the vehicle to be tested and the control instructions of the remote control base station, and controls the driving device to make the driving platform body move according to the calculated travel route and speed.

[0009] The driving device includes a front suspension and a rear suspension. The front suspension and the rear suspension are connected with a steering device. The steering device includes a front steering gear and a rear steering gear, and the steering is transmitted to the wheel steering rod by a front transmission rod and a rear transmission rod respectively to control the direction of the driving platform body; the driving device is connected with two steering wheels, and the two steering wheels are also connected with a servo motor. The small gear connected by the servo motor drives the large gear to rotate through gear meshing, and then the kinetic energy is transmitted to the rotating shaft through belt transmission. The rotating shaft drives the axle, so that the wheels rotate and drive the driving platform body to drive normally.

[0010] The rear suspension is connected with a driving wheel. A servo motor is arranged inside the driving wheel. Through holes are arranged at the positions of the housing bottom corresponding to the driving wheel and the steering wheels. The lower ends of the driving wheel and the two steering wheels respectively pass through the through holes at the corresponding positions. When the vehicle to be tested gets on the driving platform body, the front suspension and the rear suspension are deformed, so that the driving wheel and the steering wheels retract into the housing interior, avoiding damage to the driving wheel and the steering wheels due to bearing the vehicle gravity and impact; the steering device and the servo motor are both electrically connected to the power system.

[0011] Preferably, the front suspension includes a first upper bracket, a first lower bracket and a first shock absorber spring. The first end of the first lower bracket is connected with the steering device, the second end is hinged with the first end of the first shock absorber spring, the second end of the first shock absorber spring extends obliquely upward and is connected with the first upper bracket. The second end of the first upper bracket rotates upward under the elastic force of the first shock absorber spring and abuts against the top of the housing.

[0012] Preferably, the positioning device uses a second GPS module and an inertial navigation system. By combining them, the position, moving speed, and acceleration information of the driving platform body are obtained, and this information is uploaded to the edge computing box through a wireless communication device. The positioning device transmits the movement trajectory of the driving platform body to the control device in real time. The control device compares the calculated travel route with the movement trajectory. When the movement trajectory deviates from the travel route, the operation state of the driving platform body is adjusted by the first single-chip microcomputer through the control device to ensure that the driving platform body moves along the travel route.

[0013] Preferably, an edge computing platform is further included. The edge computing platform receives the upper computer test task instructions of the communication device, as well as the position information, acceleration information, and speed information of the test vehicle detection platform and the driving platform body in real time. A data processing unit and a data acquisition unit are arranged in the test vehicle detection platform. The data acquisition unit uses a combination of an imu, a first GPS module, and a depth camera to obtain raw data. The edge computing platform with an additional lidar can provide point cloud data to assist in analyzing and calculating the behavior state of the test vehicle. Combining with the data acquisition unit in the test vehicle detection platform, a SLAM high-precision map can be constructed to provide more accurate position and speed information for the driving platform body.

[0014] Preferably, the optimization of the data processing unit includes algorithm optimization, distributed processing, and real-time data processing.

[0015] Preferably, a strong magnet is provided at the top of the outer shell to adsorb the soft target test object on the outer shell. The soft target test object is made of soft material.

[0016] Preferably, the power system on the driving platform body is composed of a battery pack. A groove is provided on one side of the outer shell. The shape of the groove is adapted to the shape of the battery pack. The battery pack extends into the groove and is fixedly clamped with the outer shell.

[0017] Preferably, the edge computing platform includes an edge computing box and a power system. The edge computing box is connected to the power system. The power system provides stable power support for the edge computing box and the wireless communication module. The edge computing box integrates a high-performance processor, a memory, and an interface module supporting multiple protocols.

[0018] Preferably, the edge computing box processes the information sent by the communication base station in the Nano upper computer and issues control instructions through the communication base station. The communication base station is connected to the mobile communication device and the communication device of the vehicle under test in a wireless transmission manner.

[0019] It can be seen without doubt that through the above technical solutions of the present application, the technical problems to be solved by the present application can surely be solved.

[0020] Meanwhile, through the above technical solutions, the present invention has at least the following beneficial effects:

[0021] 1. The outer shell of the present invention is trapezoidal, and all four sides are gentle slopes, which can be climbed by the vehicle to be tested, avoiding collision and damage between the vehicle to be tested and the platform body; when the vehicle to be tested climbs onto the platform body, the shock-absorbing springs on the front suspension and the rear suspension are compressed due to the vehicle gravity, and the spring stroke is shortened, so that all the driving wheels and steering wheels of the platform body enter the outer shell, without damaging the platform body;

[0022] 2. The platform body of the present invention is equipped with a steering device, a wireless communication device and a positioning device, which can freely perform path planning and upload position, speed and acceleration information in real time, improving the flexibility of the test scenarios and test situations;

[0023] 3. The platform body of the present invention is equipped with two groups of battery devices, which can realize the non-stop test state of the device and improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a structural block diagram of the present invention.

[0026] Figure 2 It is a schematic structural diagram of the upper part of the outer shell.

[0027] Figure 3 It is a schematic structural diagram with the top of the outer shell removed.

[0028] Figure 4 It is a schematic structural diagram of the lower part of the outer shell.

[0029] Figure 5 It is a schematic structural diagram of the front suspension, steering wheel, steering device and driving device.

[0030] Figure 6 It is a schematic structural diagram of the rear suspension and steering transmission device.

[0031] Figure 7 It is a schematic structural diagram of the test vehicle state detection platform.

[0032] Figure 8 It is a schematic external structural diagram of the edge computing platform.

[0033] Figure 9It is a schematic diagram of the internal structure of the edge computing platform.

[0034] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0035] In the figure: 1. First single-chip microcomputer; 2. Strong magnet; 3. Groove; 4. Test vehicle detection platform; 5. Data acquisition unit; 6. RTK module; 7. Magnetic absorption bearing device; 8. Driving platform body; 9. Driving device; 10. Servo steering device; 11. Control device; 12. Power supply device; 13. Positioning device; 14. Wireless communication unit; 15. Data processing unit; 16. Edge computing platform; 17. Edge computing module; 18. Cloud; 19. Data storage unit; 20. Host computer; 21. Wireless communication module; 22. Wireless communication device; 23. Control algorithm module; 24. imu; 25. First GPS module; 26. Depth camera; 27. Fixed interface; 28. Second single-chip microcomputer; 29. 5G module; 30. Omnidirectional antenna; 31. Edge computing box; 32. Power supply system; 33. Lidar; 34. Upper cover of the edge computing platform; 35. Driving wheel; 36. First upper support; 37. Outer shell; 38. Rear servo; 39. Steering wheel; 40. Axle; 41. Rotating shaft; 42. Wheel steering rod; 43. Rear transmission rod; 44. Servo motor; 45. Front servo; 46. Battery pack; 47. Belt drive; 48. Second GPS module; 49. Inertial navigation system; 50. Shock-absorbing spring; 51. Front transmission rod; 52. Large gear; 53. Small gear; 54. Front suspension; 55. Rear suspension; 56. First lower support. Specific implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] Embodiment

[0038] Refer to Figures 1-9, an active vehicle safety performance testing system. Inside the housing 37, there are a driving device 9, a wireless communication device 22, an electronic control device 11, a servo steering device 10, and a positioning device 13. The driving device 9 includes a front suspension 54 and a rear suspension 55. The front suspension 54 is connected to a steering device. The steering device includes a front steering gear 45 and a rear steering gear 38, which transfer the steering to the wheel steering rod 42 through the front transmission rod 51 and the rear transmission rod respectively to control the direction of the driving platform body 8. The driving device 9 is connected to two steering wheels 39. The two steering wheels 39 are also connected to a servo motor 44. The pinion gear 53 connected to the servo motor 44 drives the large gear 52 to rotate through gear meshing, and then transmits the kinetic energy to the rotating shaft 41 through the belt drive 47. The rotating shaft 41 drives the axle 40, so that the wheels rotate and drive the driving platform body 8 to drive normally. A first single-chip microcomputer 1 is arranged inside the housing 37, and a strong magnet 2 and a groove 3 are arranged outside the housing 37.

[0039] Through holes are provided at the positions of the housing 37 corresponding to the driving wheels 35 and the steering wheels 39 at the bottom. The lower ends of the driving wheels 35 and the steering wheels 39 respectively pass through the through holes at the corresponding positions. When the vehicle to be tested drives onto the driving platform body 8, the front suspension 54 and the rear suspension 55 are deformed, so that the driving wheels 35 and the steering wheels 39 retract into the housing 37 to avoid damage to the driving wheels 35 and the steering wheels 39 due to bearing the vehicle gravity and impact. The battery pack 46 extends into the groove 3 and is fixedly clamped with the housing 37.

[0040] The front suspension 54 includes a first upper bracket 36, a first lower bracket 56, and a first shock absorber spring 50. The first lower bracket 56 is fixedly connected to the bottom of the housing 37. The middle of the first lower bracket 56 is hinged to the first upper bracket 36. The first end of the first upper bracket 36 is connected to the steering device, and the second end is hinged to the first end of the first shock absorber spring 50. The second end of the first shock absorber spring 50 extends obliquely upward and is connected to the first lower bracket 56. The second end of the first upper bracket 36 rotates upward under the elastic force of the first shock absorber spring 50 and abuts against the top of the housing 37.

[0041] The steering device includes a steering motor, a motor reducer, a steering tie rod, and a steering knuckle. The output shaft of the steering motor is connected to a motor reducer. The motor reducer is connected to the steering tie rod. The steering tie rod is connected to the steering wheel 39. The electronic control device 11 changes the direction of the steering wheel 39 by controlling the rotation of the steering motor to change the movement direction of the driving platform body 8 and correct the deviation from the preset path. The electronic control device 11 is connected to a power supply device 12.

[0042] The positioning device 13 uses the second GPS module 48 and the inertial navigation system 49. By combining them, it obtains the position, moving speed, and acceleration information of the driving platform body 8, and uploads this information to the remote control base station through the wireless communication device 22. The positioning device 13 transmits the movement trajectory of the driving platform body 8 to the control device 11 in real time. The control device 11 compares the calculated travel route with the movement trajectory. When the movement trajectory deviates from the travel route, it adjusts the operating state of the driving platform body 8 through the control device 11 to ensure that the driving platform body 8 moves along the travel route.

[0043] The steering device, the servo motor 44, the wireless communication device 22, the control device 11, and the inertial navigation system 49 are all electrically connected to the power supply system 32. The steering device, the servo motor 44, the wireless communication device 22, and the inertial navigation system 49 are all electrically connected to the control device 11. The remote control base station includes a remote terminal and a communication base station. The remote terminal processes the information sent by the communication base station and issues control instructions through the communication base station. The wireless communication device 22 and the communication device of the vehicle to be tested are both connected to the communication base station in a wireless transmission manner. The wireless communication device 22 transmits the position, moving speed, and acceleration information of the driving platform body 8 to the communication base station in real time, and receives the control instructions of the communication base station and the position, moving speed, and acceleration information of the vehicle to be tested. The control device 11 calculates the travel route and travel speed of the driving platform body 8 according to the position, moving speed, and acceleration information of the vehicle to be tested and the control instructions of the communication base station, and controls the driving device 9 to make the driving platform body 8 move according to the calculated travel route and speed. A magnetic adsorption carrying device 7 and a driving device 9 are arranged inside the driving platform body 8.

[0044] The test vehicle detection platform 4 is connected to the test vehicle through the fixed interface 27 to ensure the accuracy of data. Moreover, the test vehicle detection platform 4 has comprehensively optimized the three key links of data acquisition, processing, and transmission. Data acquisition unit 5: The data acquisition unit 5 uses sensors such as the imu 24, the first GPS module 25, and the depth camera 26 to obtain raw data. A microprocessor is introduced into the acquisition unit, and edge computing technology is used to preliminarily screen, compress, and analyze the raw data, thereby reducing the burden on the subsequent data processing unit 15. Data processing unit 15: A prediction model based on machine learning is introduced into the second single-chip microcomputer 28 to dynamically detect and analyze the acquired data. The data is distributed to multiple nodes for parallel processing through a distributed computing architecture, and real-time analysis and compression are achieved in combination with a streaming data processing framework, effectively improving the processing efficiency. Wireless communication unit 14: Select a suitable wireless communication protocol (such as 5G URLLC), improve the communication quality by combining a signal amplifier and multi-antenna technology, preferentially transmit key status data through data grouping and priority strategies, introduce a data caching mechanism for batch transmission when the signal is unstable, and deploy redundant channels to enhance the reliability and fault tolerance of communication, thereby realizing the efficient and real-time detection and transmission of the test vehicle status.

[0045] The edge computing platform 16 includes an edge computing box 31 and a wireless communication module 21. The communication device includes a 5G module 29 and an omnidirectional antenna 30. The rotatable head of the omnidirectional antenna 30 is above the upper cover plate 34 of the edge computing platform to ensure stable communication. The edge computing platform 16 realizes wireless communication by connecting the 5G module 29 and the omnidirectional antenna 30 and is connected to the cloud 18. The test vehicle detection platform 4 and the driving platform body 8 are connected to the edge computing platform 16 in a wireless communication manner through the wireless communication unit 14 and the wireless communication device 22. The test vehicle detection platform 4 is connected with an RTK module 6. The wireless communication unit 14 and the wireless communication device 22 transmit the position information, acceleration information, and speed information of the test vehicle detection platform 4 and the driving platform body 8 to the wireless communication module 21 of the edge computing platform 16 in real time. The wireless communication module 21 is connected with an edge computing module 17, and the edge computing module 17 is connected with a control algorithm module 23. The edge computing platform 16 receives the test task instructions of the upper computer 20 of the communication device and the position information, acceleration information, and speed information of the test vehicle detection platform 4 and the driving platform body 8 in real time, calculates the driving route and driving speed of the driving platform body 8 in real time in the edge computing box 31, and sends the calculation results to the driving platform body 8 through the wireless communication module 21. The first single-chip microcomputer 1 controls the driving platform body 8 to execute the calculated driving route and driving speed. The additional lidar 33 of the edge computing platform 16 is placed above the upper cover plate 34 of the edge computing platform, which is convenient for scanning the overall environment, can provide point cloud data to assist in analyzing and calculating the behavior state of the test vehicle, and can construct a SLAM high-precision map in combination with the wireless communication device 22 in the test vehicle detection platform 4, providing more accurate position and speed information for the driving platform body 8, improving the understanding of the test environment by the automotive active safety performance test system, and enabling the system to have a more intelligent decision-making ability.

[0046] The upper computer 20 is connected to the edge computing platform 16 by wireless communication or wired communication. The upper computer 20 is connected to the cloud 18 by wireless communication. A data storage unit 19 is set in the cloud 18 to obtain the historical data and analysis results stored in the cloud 18. The upper computer 20 receives the position information, acceleration information, and speed information of the test vehicle detection platform 4 and the driving platform body 8 in real time through the edge computing platform 16 and issues control instructions to the edge computing platform 16 to adjust the test mode.

[0047] As can be seen from the above:

[0048] Technical problems addressed by the present invention: Existing testing equipment generally adopts a design of traction or belt drive, and usually requires laying fixed moving tracks. Such equipment can only achieve the linear movement of pedestrians, lacks flexibility, and the movement speed of the dummy is uncontrollable. In addition, the design of the traction rope or drive belt occupies a large amount of lane space, which not only interferes with the normal passage of other vehicles, but also significantly limits the diversity and authenticity of the test scenarios. At the same time, existing equipment usually cannot communicate effectively with test vehicles and traffic facilities, and it is difficult to adjust the movement posture and behavioral intention of the dummy test platform in real time according to the vehicle movement state, traffic signal changes, and the operation of roadside equipment. These deficiencies directly affect the reliability of the experimental data and reduce the accuracy of technical verification. In addition, existing equipment has a high delay during data transmission and relies heavily on cloud computing resources; the steering flexibility of the equipment is poor; and the disassembly and replacement of soft targets are not convenient enough. These problems significantly limit the application effect of the testing equipment in the development and verification of autonomous driving technology; By adopting the technical solutions of the above embodiments and through the above settings, this application will surely solve the above technical problems. At the same time, the following technical effects can be achieved:

[0049] 1. The outer shell of the present invention is trapezoidal, with gentle slopes on all four sides, which can allow the vehicle to be tested to drive onto it, avoiding collision and damage between the vehicle to be tested and the platform body; when the vehicle to be tested drives onto the platform body, the shock-absorbing springs 50 on the front suspension 54 and the rear suspension 55 are compressed due to the vehicle gravity, and the spring stroke is shortened, so that all the driving wheels and steering wheels of the platform body enter the outer shell, without damaging the platform body;

[0050] 2. The platform body of the present invention is equipped with a servo steering device 10, a wireless communication device 22, and a positioning device 13, which can freely perform path planning and upload position, speed, and acceleration information in real time, improving the flexibility of the test scenarios and test situations;

[0051] 3. The platform body of the present invention is equipped with two groups of battery devices, which can achieve a non-stop test state for the device, improving the test efficiency.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0053] Obviously, the embodiments described above are only a part of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are shown in the accompanying drawings, but they do not limit the scope of the patent of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure made by using the content of the specification and drawings of the present invention, directly or indirectly applied to other related technical fields, is equally within the scope of the patent protection of the present invention.

Claims

1. An active vehicle safety performance testing system, characterized in that It includes a driving platform body (8), and the driving platform body (8) is connected to a remote control base station through wireless communication. The driving platform body (8) includes a housing (37) and a power supply system (32). The housing (37) is trapezoidal in shape, and the side plates on the upper part of the housing (37) are all inclined. Inside the housing (37), there are a driving device (9), a wireless communication device (22), a control device (11), and a positioning device (13). The driving device (9), the wireless communication device (22), the control device (11), and the positioning device (13) are all electrically connected to the power supply system (32). The driving device (9), the wireless communication device (22), and the positioning device (13) are all electrically connected to the control device (11).

2. The automotive active safety performance testing system according to claim 1, wherein The wireless communication device (22) transmits the position, moving speed, and acceleration information of the driving platform body (8) to the remote control base station in real time, and receives the control instructions from the remote control base station and the position, moving speed, and acceleration information of the vehicle to be tested. The control device (11) calculates the traveling route and traveling speed of the driving platform body (8) according to the position, moving speed, and acceleration information of the vehicle to be tested and the control instructions from the remote control base station, and controls the driving device (9) to make the driving platform body (8) move according to the calculated traveling route and speed. The driving device (9) includes a front suspension (54) and a rear suspension (55). The front suspension (54) and the rear suspension (55) are connected with a steering device. The steering device includes a front steering gear (45) and a rear steering gear (38), and the steering is transmitted to the wheel steering rod (42) by a front transmission rod (51) and a rear transmission rod respectively to control the direction of the driving platform body (8). The driving device (9) is connected with two steering wheels (39). A servo motor (44) is also connected to the two steering wheels (39). The pinion gear (53) connected by the servo motor (44) drives the large gear (52) to rotate through gear meshing, and then the kinetic energy is transmitted to the rotating shaft (41) through a belt drive (47). The rotating shaft (41) drives the axle (40), so that the wheels rotate and drive the driving platform body (8) to travel normally. The rear suspension (55) is connected with a driving wheel (35). A servo motor (44) is arranged inside the driving wheel (35). Through holes are provided at the bottom of the housing (37) corresponding to the positions of the driving wheel (35) and the steering wheels (39). The lower ends of the driving wheel (35) and the two steering wheels (39) pass through the through holes at the corresponding positions respectively. When the vehicle to be tested gets on the driving platform body (8), the front suspension (54) and the rear suspension (55) are deformed, so that the driving wheel (35) and the steering wheels (39) retract into the housing (37) to avoid damage to the driving wheel (35) and the steering wheels (39) due to bearing the vehicle gravity and impact. The steering device and the servo motor (44) are all electrically connected to the power supply system (32).

3. The vehicle active safety performance test system according to claim 2, wherein The front suspension (54) includes a first upper bracket (36), a first lower bracket (56), and a first shock absorber spring (50). The first end of the first lower bracket (56) is connected to the steering device, and the second end is hinged to the first end of the first shock absorber spring (50). The second end of the first shock absorber spring (50) extends obliquely upward and is connected to the first upper bracket (36). The second end of the first upper bracket (36) rotates upward under the elastic force of the first shock absorber spring (50) and abuts against the top of the housing (37).

4. The vehicle active safety performance test system according to claim 1, characterized in that, The positioning device (13) uses a second GPS module (48) and an inertial navigation system (49). By combining them, it obtains the position, moving speed, and acceleration information of the driving platform body (8), and uploads this information to the edge computing box (31) through the wireless communication device (22). The positioning device (13) transmits the movement trajectory of the driving platform body (8) to the control device (11) in real time. The control device (11) compares the calculated travel route with the movement trajectory. When the movement trajectory deviates from the travel route, the operation state of the driving platform body (8) is adjusted by the first single-chip microcomputer (1) through the control device (11) to ensure that the driving platform body (8) moves along the travel route.

5. The vehicle active safety performance testing system according to claim 1, characterized in that, It further includes an edge computing platform (16). The edge computing platform (16) receives the test task instructions of the host computer (20) of the communication device, as well as the position information, acceleration information, and speed information of the test vehicle detection platform (4) and the driving platform body (8) in real time. A data processing unit (15) and a data acquisition unit (5) are provided in the test vehicle detection platform (4). The data acquisition unit (5) uses a combination of an imu (24), a first GPS module (25), and a depth camera (26) to obtain raw data. The edge computing platform (16) with an additional lidar (33) can provide point cloud data to assist in analyzing and calculating the behavior state of the test vehicle. Combining with the data acquisition unit (5) in the test vehicle detection platform (4) can construct a SLAM high-precision map to provide more accurate position and speed information for the driving platform body (8).

6. The vehicle active safety performance testing system according to claim 5, characterized in that, The optimization of the data processing unit (15) includes algorithm optimization, distributed processing, and real-time data processing.

7. The vehicle active safety performance testing system according to claim 1, characterized in that, A strong magnet (2) is provided at the top end of the housing (37) to adsorb the soft target test object on the housing (37). The soft target test object is made of a soft material.

8. The vehicle active safety performance test system according to claim 2, wherein The power system on the driving platform body (8) is composed of a battery pack (46). A groove (3) is provided on one side of the housing (37). The shape of the groove (3) is adapted to the shape of the battery pack (46). The battery pack (46) extends into the groove (3) and is snap-fitted and fixed to the housing (37).

9. The vehicle active safety performance testing system according to claim 5, wherein The edge computing platform (16) includes an edge computing box (31) and a power supply system (32). The edge computing box (31) is connected to the power supply system (32). The power supply system (32) provides stable power support for the edge computing box (31) and the wireless communication module (21). The edge computing box (31) integrates a high-performance processor, a memory, and an interface module supporting multiple protocols.

10. The automotive active safety performance testing system according to claim 9, wherein The edge computing box (31) processes the information sent by the communication base station in the upper computer (20) and issues control instructions through the communication base station. The communication base station is connected to the mobile communication device and the communication device of the vehicle to be tested in a wireless transmission manner.

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