Method and device for testing fusion function of intelligent driving and intelligent chassis

Abstract

The invention relates to the technical field of vehicle intelligent driving and intelligent chassis testing, and discloses a method and device for testing the fusion function of intelligent driving and intelligent chassis, and the device comprises an equipment trigger, an air bag assembly, an air bag housing, an air bag cover plate, an inflation hose, an air storage tank, and a miniature air compressor. The air bag assembly is arranged in the air bag shell in a foldable mode and connected with an inflation switch valve of the air storage tank through an inflation hose, the miniature air compressor inflates the air storage tank, and the air pressure is monitored through the pressure gauge. The equipment trigger detects a vehicle and sends a trigger signal, and obstacle spraying cloth of the air bag assembly is detachably connected with an air bag. According to the scheme, an obstacle suddenly appears from a hidden state through transient inflation, a sudden dangerous scene is simulated, multiple sensors of a vehicle can be cheated, multiple trigger modes are supported, different obstacles can be flexibly simulated, high-reality, high-repeatability and safe testing can be achieved, and the minimum loss decision-making capacity of the vehicle can be verified.

Description

Technical Field

[0001] This invention relates to the field of vehicle intelligent driving and intelligent chassis testing technology, and specifically to a method and apparatus for testing the integrated functions of intelligent driving and intelligent chassis. Background Technology

[0002] With the rapid development of automotive intelligence technology, the integration of intelligent driving systems and intelligent chassis technology has become a core direction for improving vehicle safety performance. Active Emergency Steering (AES), a key function of combined driver assistance systems, can avoid collision risks in emergency situations by steering to avoid collisions. However, activating this function may lead to vehicle instability, causing dynamic handling hazards such as skidding and rollover. Advances in intelligent chassis technology, through optimized chassis stability control strategies, provide greater safety margins for the safe application of AES. The integration of the control links between the intelligent driving domain and the chassis domain further expands the safety applicability of combined driver assistance systems, significantly improving the adaptability and reliability of AES.

[0003] To verify the actual effectiveness of the integrated control of intelligent driving and intelligent chassis, and to ensure that vehicles can safely and stably perform emergency braking or avoidance in extreme emergency scenarios, real-vehicle testing has become an indispensable key step in the industry. Currently, the mainstream testing methods in the industry mainly include three types: fixed obstacle testing, moving target vehicle testing, and manual throwing testing. However, all of these methods have shortcomings such as known obstacles and insufficient test consistency due to obstacle movement errors, making it difficult to meet the stringent requirements of integrated function testing. Firstly, the fixed obstacle test involves placing static dummy vehicles or obstacles directly on the vehicle's path. This method can only simulate static obstacle scenarios and cannot reproduce the dynamic, sudden appearance of obstacles. Vehicle sensors can identify obstacles from a distance in advance and have ample time to make braking or avoidance decisions, resulting in a serious lack of realism in the test scenario. Furthermore, due to the excessively long obstacle recognition distance, the test frequently triggers the vehicle's Automatic Emergency Braking (AEB) function, making it difficult to effectively verify the actual performance of the AES function.

[0004] Secondly, the moving target vehicle test uses a carrier vehicle to tow a dummy vehicle or dummy for lateral or longitudinal movement. Although this introduces dynamic elements, the movement trajectory of the obstacle is continuous and predictable. Vehicle sensors can track the movement state of the obstacle in advance and make predictions, but they cannot simulate extreme sudden situations of "appearing instantly from nothing." Furthermore, this method is difficult to control the consistency of the obstacle's appearance time, resulting in poor test repeatability.

[0005] Third, the manual throwing test involves throwing obstacles into the lane by hand or mechanical devices. This method not only has poor repeatability and low test accuracy, but also makes it difficult to accurately control the position, posture and timing of the obstacle's appearance. At the same time, it poses a high safety hazard and can easily cause injury to test vehicles and personnel, and cannot meet the requirements of standardized testing.

[0006] In summary, the core shortcoming of existing testing technologies lies in their inability to accurately reproduce scenarios where obstacles suddenly intrude, both temporally and spatially, within the previously unobstructed perception blind spot in front of the vehicle. Such scenarios are widespread in real-world road environments, including stationary obstacles caused by sudden accidents, obstacles suddenly appearing after traversing dense fog or tunnels, debris flying from oncoming vehicle crashes, and sudden hazards such as landslides and mudslides. These scenarios share the common characteristic of being completely outside the vehicle's sensor detection range before the obstacle appears, and having extremely short reaction time for the vehicle system after its appearance. These are critical scenarios for testing the integrated control performance of intelligent driving and intelligent chassis. Existing testing methods cannot effectively, repeatably, and safely reproduce these scenarios, resulting in a significant gap in testing the vehicle's extreme emergency avoidance capabilities. This hinders the iterative optimization and industrial application of integrated intelligent driving and intelligent chassis technologies. Therefore, there is an urgent need for a testing method and device that can accurately simulate sudden obstacle scenarios and possesses high repeatability and safety to fill this technological gap in the industry. Summary of the Invention

[0007] The present invention aims to provide a method and apparatus for testing the integrated functions of intelligent driving and intelligent chassis, in order to solve the problem that existing testing technologies cannot simulate unpredictable sudden obstacle scenarios in the blind spot of the vehicle's front perception, resulting in insufficient test authenticity, repeatability and test dimensions.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A device for testing the integration of intelligent driving and intelligent chassis functions includes: a device trigger, an airbag assembly, an airbag shell, an airbag cover, an inflation hose, an air tank, and a miniature air compressor; The airbag assembly can be folded and placed inside the airbag shell. The airbag cover plate covers the upper surface of the airbag shell. The airbag shell has an inflation tube through hole. The airbag assembly is connected to the inflation switch valve on the air tank through the inflation tube through hole via an inflation hose. The miniature air compressor is used to fill the air tank, and the air tank is equipped with a pressure gauge for monitoring the internal air pressure. The device trigger is set at a preset position in front of the driving path of the vehicle under test, and is used to detect the vehicle and send a trigger signal to the inflation switch valve. The airbag assembly includes a barrier sprayed cloth and an airbag, with the barrier sprayed cloth and the airbag being detachably connected.

[0009] The principle and advantages of this solution are as follows: In practical applications, the device trigger detects the vehicle under test, triggering the air tank to transiently inflate the airbag assembly, causing the folded airbag assembly to rapidly expand and form a three-dimensional obstacle. This can simulate extreme scenarios where obstacles suddenly intrude into real roads, solving the problem of insufficient scenario realism in existing tests. Through standardized electronic triggering and inflation procedures, the timing, position, and shape of the obstacle's appearance are precisely controlled, improving the repeatability and accuracy of the test. The inflatable flexible obstacle reduces the safety risks to vehicles and personnel during testing. The detachable obstacle coating supports multiple scenario simulations, expanding the testing dimensions and meeting the comprehensive testing needs of intelligent driving and intelligent chassis integration functions.

[0010] Preferably, as an improvement, the device trigger includes two trigger modes: a single-touch mode and a dual-touch speed measurement mode. In the single-touch mode, when a vehicle passes the device trigger, the device trigger immediately sends an opening signal to the inflation switch valve. In the dual-touch speed measurement mode, the device trigger is equipped with two probes. The vehicle speed is calculated by detecting the time difference between the two probes. The opening signal is only sent to the inflation switch valve when the vehicle speed is within a preset range.

[0011] Technical benefits: It supports precise adaptation to different testing needs. The single-touch mode can test the fastest response limit of the vehicle system, while the dual-touch speed measurement mode can specifically verify the risk avoidance capability at a specific vehicle speed, improving the flexibility and targeting of the test.

[0012] Preferably, as an improvement, the barrier spraying cloth is connected to the airbag via an easy-tear adhesive, allowing for the replacement of barrier spraying cloths with different reflective properties and patterns.

[0013] Technical benefits: Enables rapid disassembly and replacement of obstacle spraying cloth, allowing simulation of various obstacle types without replacing the entire equipment, reducing testing costs and improving the equipment's versatility and efficiency.

[0014] Preferably, as an improvement, a local area of ​​the obstacle spray coating is provided with an obstacle-shaped super reflective coating, and the area corresponding to the obstacle-shaped super reflective coating is printed with an obstacle pattern.

[0015] Technical effect: The obstacle spraying cloth creates areas with different radar reflection characteristics. By constructing a conflict scenario through the difference between the visual pattern and the radar reflection signal, it is used to test the vehicle's minimum loss decision-making ability.

[0016] Preferably, as an improvement, the airbag shell can be embedded in a pre-set groove in the road surface, and the upper surface of the airbag shell is flush with the road surface.

[0017] Technical benefits: It avoids interference from the protrusion of the equipment on the driving state of the tested vehicle (especially vehicles with intelligent suspension), prevents the active damping function of the vehicle suspension from being triggered, and ensures the consistency and accuracy of the initial test conditions.

[0018] Preferably, as an improvement, the inflation switch valve opens within 0.2-2 seconds after receiving the trigger signal, allowing the high-pressure gas in the gas tank to rush into the airbag, pushing the airbag assembly to inflate and open the airbag cover.

[0019] Technical effects: It enables the transient generation of obstacles from scratch, perfectly replicating the "sudden appearance" characteristics of unexpected obstacles on real roads, shortening the reaction time of vehicle systems, and simulating the most stringent emergency test scenarios.

[0020] A method for testing the fusion function of intelligent driving and intelligent chassis, implemented based on a device for testing the fusion function of intelligent driving and intelligent chassis, includes: S1, place the airbag shell and the built-in folded airbag assembly at the specified position on the test driving path of the vehicle under test. If conditions permit, embed the airbag shell into the preset groove on the road surface so that the upper surface of the airbag shell is flush with the road surface. S2, the air tank is filled to the test pressure using a miniature air compressor, and the air pressure is monitored by a pressure gauge; S3, set the device trigger at a preset trigger distance in front of the driving path of the vehicle under test; S4. According to the test requirements, set the trigger mode of the device trigger to single-touch mode or dual-touch speed measurement mode. S5, start the equipment to enter the test mode. When the equipment trigger is activated, the airbag assembly inflates to form a three-dimensional obstacle to test the vehicle's emergency braking and obstacle avoidance performance.

[0021] Technical effect: Through standardized operating procedures, the consistency and repeatability of test conditions are ensured, which can stably reproduce sudden obstacle scenarios and accurately verify the comprehensive emergency avoidance performance of vehicles under the integrated control of intelligent driving and intelligent chassis.

[0022] Preferably, as an improvement, in S4, when the dual-trigger speed measurement mode is set, a corresponding vehicle speed range is preset according to the test scenario, and the vehicle speed range includes the urban road vehicle speed range and the highway vehicle speed range.

[0023] Technical benefits: It adapts to the testing needs of different real-world driving scenarios such as urban roads and highways, making the test results more practical and valuable, and improving the coverage of testing scenarios.

[0024] Preferably, as an improvement, in S1, different types of obstacles, including vehicles, pedestrians, and foreign objects, are simulated by changing the obstacle spraying cloth.

[0025] Technical benefits: It enriches the diversity of test scenarios, eliminates the need for additional testing equipment, and enables the testing of obstacle avoidance performance for different obstacle types, thereby improving testing efficiency and cost-effectiveness.

[0026] Preferably, as an improvement, in step S1, an obstacle spraying cloth with an obstacle-shaped super-reflective coating is used. By using the strong reflective characteristics of its local area and the corresponding pattern, the vehicle's minimum loss decision-making ability in an unavoidable collision scenario is tested.

[0027] Technical benefits: Breaking away from the superficial verification of traditional testing that only focuses on "whether braking / avoidance is effective", this test delves into the multi-sensor fusion capabilities and ethical decision-making algorithms of the vehicle's autonomous driving system, expanding the depth and dimensions of the test. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the exploded structure of the obstacle assembly according to an embodiment of the present invention; Figure 2 This is a half-sectional structural diagram of the obstacle assembly according to an embodiment of the present invention; Figure 3 This is a front view of the device in an uninflated state according to an embodiment of the present invention; Figure 4 This is a front view structural diagram of the device in the inflation state according to an embodiment of the present invention; Figure 5 This is a top view of the device in the inflated state according to an embodiment of the present invention; Figure 6 This is a front view schematic diagram of the device inflation state pattern and reflection enhancement layout according to an embodiment of the present invention.

[0029] The reference numerals in the accompanying drawings include: device trigger 1, trigger bracket 2, airbag housing 3, inflation tube through hole 301, airbag cover plate 4, airbag assembly 5, obstacle spraying cloth 501, obstacle shape super reflective coating 502, airbag 503, inflation hose 6, air tank 7, pressure gauge 701, inflation switch valve 702, and miniature air compressor 8. Detailed Implementation

[0030] The following detailed description illustrates the specific implementation method: The basic implementation examples are as follows: Figure 1 , 2 As shown in Figure 3, a device for testing the integration function of intelligent driving and intelligent chassis includes: a device trigger 1, an airbag assembly 5, an airbag shell 3, an airbag cover 4, an inflation hose 6, an air tank 7, and a miniature air compressor 8.

[0031] The airbag assembly 5 is foldable and placed inside the airbag housing 3. The airbag cover 4 covers the upper surface of the airbag housing 3. The airbag housing 3 has an inflation tube through-hole 301. The airbag assembly 5 is connected to the inflation switch valve 702 on the air tank 7 through the inflation tube through-hole 301 via the inflation hose 6. When conditions permit, the airbag housing 3 is placed in a pre-set groove on the road surface, with the upper surface of the airbag housing 3 flush with the road surface. This way, for vehicles with intelligent suspension, the active damping function of the suspension will not be triggered.

[0032] like Figure 4 , 5 As shown, the miniature air compressor 8 is used to fill the air tank 7 with air, and the air tank 7 is equipped with a pressure gauge 701 for monitoring the internal air pressure.

[0033] The device trigger is positioned at a preset location ahead of the test vehicle's travel path via trigger bracket 2. This preset location can be manually defined or set according to test requirements. It is used to detect the vehicle and send a trigger signal to the inflation switch valve 702. Upon receiving the trigger signal, the inflation switch valve 702 opens within 0.2-2 seconds, allowing high-pressure gas from the gas tank 7 to rapidly rush into the airbag 503, pushing the airbag assembly 5 inflat and opening the airbag cover 4. The 0.2-2 seconds represents the waiting time between triggering and activating the obstacle, and also the time required for the obstacle to fully deploy.

[0034] The device trigger 1 includes two triggering modes: a single-touch mode and a dual-touch speed measurement mode. In the single-touch mode, when a vehicle passes the device trigger 1, the device trigger 1 immediately sends an opening signal to the inflation switch valve 702, the inflation valve opens, the airbag assembly 5 inflates and immediately expands, pushing open the airbag cover 4 and fully deploying. In the dual-touch speed measurement mode, the device trigger 1 is equipped with two probes. When a car passes the device trigger 1, the two probes on the device trigger 1 detect the time it takes for the vehicle to pass. The vehicle speed is calculated by detecting the time difference between the two probes. An opening signal is sent to the inflation switch valve 702 only when the vehicle speed is within a preset range. This mode is used to detect and measure whether a correct emergency risk avoidance response can be made at a specific vehicle speed.

[0035] like Figure 4 , 6 As shown, the airbag assembly 5 includes an obstacle sprayed cloth 501 and an airbag 503. The airbag 503 acts as a support, standing up when inflated to fully deploy the obstacle sprayed cloth 501. A local area of ​​the obstacle sprayed cloth 501 is provided with an obstacle-shaped super-reflective coating 502. The area corresponding to the obstacle-shaped super-reflective coating 502 is printed with obstacle patterns, making the obstacles more realistic and further testing the vehicle's decision-making ability to minimize losses, except for emergency avoidance or braking. For example, if the obstacle sprayed cloth 501 depicts a person and a tree branch, then choosing to hit the tree branch will result in the minimum loss.

[0036] The obstacle spraying cloth 501 and the airbag 503 are detachably connected by an easy-tear adhesive strip to facilitate the replacement of various types of cloth or patterns that can reflect radar signals, so as to simultaneously deceive the car's radar and camera, making the car mistake them for real obstacles.

[0037] It also includes a method for testing the fusion function of intelligent driving and intelligent chassis, implemented based on a device for testing the fusion function of intelligent driving and intelligent chassis, comprising: S1, place the airbag shell 3 and the built-in folded airbag assembly 5 at the specified position on the test driving path of the vehicle under test. If conditions permit, embed the airbag shell 3 into the preset groove of the road surface so that the upper surface of the airbag shell 3 is flush with the road surface. By replacing the obstacle spraying cloth 501, simulate different types of obstacles including vehicles, pedestrians and foreign objects. Use the obstacle spraying cloth 501 with an obstacle-shaped super reflective coating 502. Through its strong reflective characteristics in local areas and corresponding patterns, test the vehicle's minimum loss decision-making ability in unavoidable collision scenarios.

[0038] S2, the air tank 7 is filled with air to the test pressure by the miniature air compressor 8, and the air pressure is monitored by the pressure gauge 701; S3, set the device trigger 1 at a preset trigger distance in front of the driving path of the vehicle under test; S4. According to the test requirements, set the trigger mode of device trigger 1 to single-touch mode or dual-touch speed measurement mode; when set to dual-touch speed measurement mode, preset the corresponding vehicle speed range according to the test scenario, the vehicle speed range includes urban road vehicle speed range and highway vehicle speed range.

[0039] S5, start the equipment and put it into test mode. When the equipment trigger 1 is triggered, the airbag assembly 5 inflates to form a three-dimensional obstacle to test the vehicle's emergency braking and obstacle avoidance performance.

[0040] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for testing the fusion function of intelligent driving and intelligent chassis, characterized in that, include: Equipment trigger, airbag assembly, airbag shell, airbag cover, inflation hose, air tank, miniature air compressor; The airbag assembly can be folded and placed inside the airbag shell. The airbag cover plate covers the upper surface of the airbag shell. The airbag shell has an inflation tube through hole. The airbag assembly is connected to the inflation switch valve on the air tank through the inflation tube through hole via an inflation hose. The miniature air compressor is used to fill the air tank, and the air tank is equipped with a pressure gauge for monitoring the internal air pressure. The device trigger is set at a preset position in front of the driving path of the vehicle under test, and is used to detect the vehicle and send a trigger signal to the inflation switch valve. The airbag assembly includes a barrier sprayed cloth and an airbag, with the barrier sprayed cloth and the airbag being detachably connected.

2. The device for testing the fusion function of intelligent driving and intelligent chassis according to claim 1, characterized in that: The device trigger includes two trigger modes: single-touch mode and dual-touch speed measurement mode. In single-touch mode, when a vehicle passes the device trigger, the device trigger immediately sends an opening signal to the inflation switch valve. In dual-touch speed measurement mode, the device trigger is equipped with two probes. The vehicle speed is calculated by detecting the time difference between the two probes. The opening signal is only sent to the inflation switch valve when the vehicle speed is within a preset range.

3. The device for testing the fusion function of intelligent driving and intelligent chassis according to claim 1, characterized in that: The obstacle spraying cloth is connected to the airbag via an easy-tear adhesive strip, allowing for the replacement of obstacle spraying cloths with different reflective properties and patterns.

4. The device for testing the fusion function of intelligent driving and intelligent chassis according to claim 1, characterized in that: The obstacle spraying cloth has a local area with an obstacle-shaped super reflective coating, and the area corresponding to the obstacle-shaped super reflective coating is printed with an obstacle pattern.

5. The device for testing the fusion function of intelligent driving and intelligent chassis according to claim 1, characterized in that: The airbag shell can be embedded in a pre-set groove in the road surface, and the upper surface of the airbag shell is flush with the road surface.

6. The device for testing the fusion function of intelligent driving and intelligent chassis according to claim 1, characterized in that: After receiving the trigger signal, the inflation switch valve opens within 0.2-2 seconds, allowing the high-pressure gas in the gas tank to rush into the airbag, pushing the airbag assembly to inflate and open the airbag cover.

7. A method for testing the fusion function of intelligent driving and intelligent chassis, characterized in that: The device for testing the fusion function of intelligent driving and intelligent chassis as described in claims 1-6 includes: S1, place the airbag shell and the built-in folded airbag assembly at the specified position on the test driving path of the vehicle under test. If conditions permit, embed the airbag shell into the preset groove on the road surface so that the upper surface of the airbag shell is flush with the road surface. S2, the air tank is filled to the test pressure using a miniature air compressor, and the air pressure is monitored by a pressure gauge; S3, set the device trigger at a preset trigger distance in front of the driving path of the vehicle under test; S4. According to the test requirements, set the trigger mode of the device trigger to single-touch mode or dual-touch speed measurement mode; S5, start the equipment to enter the test mode. When the equipment trigger is activated, the airbag assembly inflates to form a three-dimensional obstacle to test the vehicle's emergency braking and obstacle avoidance performance.

8. The method for testing the fusion function of intelligent driving and intelligent chassis according to claim 7, characterized in that: In S4, when the dual-trigger speed measurement mode is set, a corresponding vehicle speed range is preset according to the test scenario. The vehicle speed range includes the urban road vehicle speed range and the highway vehicle speed range.

9. A method for testing the fusion function of intelligent driving and intelligent chassis according to claim 8, characterized in that: In S1, different types of obstacles, including vehicles, pedestrians, and foreign objects, are simulated by changing the obstacle spraying cloth.

10. A method for testing the fusion function of intelligent driving and intelligent chassis according to claim 9, characterized in that: In step S1, an obstacle spraying cloth with an obstacle-shaped super-reflective coating is used. By examining the strong reflective characteristics of its local area and the corresponding pattern, the vehicle's ability to make decisions with minimal loss in unavoidable collision scenarios is tested.

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