Intelligent auxiliary braking system testing device and method

Abstract

The present invention provides a device and method for testing an intelligent auxiliary braking system, wherein the testing device includes a support frame, a vehicle speed simulation mechanism, a pedal and booster operating mechanism, a control module angle adjustment mechanism, an instrument display fixing mechanism, an electronic parking operating mechanism, a brake state detection mechanism, a control system, and a CAN signal simulator. The vehicle speed simulation mechanism, the pedal and booster operating mechanism, the control module angle adjustment mechanism, the electronic parking operating mechanism, the brake state detection mechanism, and the CAN signal simulator are electrically connected to the control system. The present invention enables systematic verification of various intelligent auxiliary operating conditions in the braking system, making the verification more consistent with the user's actual usage scenarios; at the same time, it saves verification cycle and cost, improves test accuracy, and ensures consistency between test conditions and scenario simulation.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle testing, and in particular relates to a testing device and method for an intelligent auxiliary braking system. Background Art

[0002] With the development of intelligent technology, intelligent assisted driving technology, as an intermediate product of the development of autonomous driving, has been widely used in vehicles. Among them, auxiliary intelligent technology in the braking field has gradually become a standard feature of vehicles and is also an important guarantee for driving safety. That is, it can reduce the dangerous state of the vehicle to or ensure it is within a controllable risk range before the driver detects the danger or through precise calculations, taking measures that are superior to the driver's control, thereby ensuring the safety of the passengers. The braking system field has a large variety of hardware components and wiring harnesses, and the signals and working conditions that interact with the entire vehicle are relatively complex. The lack of any one of these signals or abnormal feedback from any component will not guarantee the normal operation of its intelligent functions. Therefore, it is difficult to test it at the level of a separate system, especially to conduct experimental tests under intelligent working conditions, and there are no industry attempts yet.

[0003] At present, the intelligent auxiliary function testing and verification of the braking system generally uses the whole vehicle. On the whole vehicle, only functional calibration and short-term repetitive verification of working conditions can be carried out. Reliability verification at the level of tens of thousands cannot be carried out continuously. Therefore, the stability and reliability verification of the intelligent auxiliary function under various working conditions cannot be effectively verified in kind.

[0004] Currently, in the industry, the verification of intelligent auxiliary functions of braking systems is usually based on non-systematic structural thinking, and is usually carried out in the form of a single component or a single function, adopting the following model:

[0005] (1) Using all signal modes to achieve functional verification:

[0006] For example, the control core of the intelligent assistance function is the control module. Usually, an HIL test bench, or hardware-in-the-loop simulation test bench, is used to trigger and start the control module using all virtual signals to detect the consistency of its output signal with the corresponding working condition under the triggering condition. In other words, all of this is signal simulation and comparison verification. The reliability verification adopted is also performed using the above method. It lacks the participation of physical mechanical functions and the influence caused by the unstable working condition of the trigger signal. It is a verification of purely ideal working conditions.

[0007] (2) Implementing functional verification using mechanical working mode:

[0008] For example, the control module mentioned above can load different pressures on the pressure output channel through external equipment to simulate the different pressures in the pipeline when different wheels are braked during driving, so as to reversely detect whether the control module adjusts the pressure according to the set function and feeds back different working condition signals. That is, the difference in mechanical working conditions is used to verify the normality and stability of different functions. However, with this mode, the stability of the working condition pressure cannot be effectively guaranteed, and it is difficult to simulate different working conditions, especially the superposition of multiple working conditions under one function.

[0009] The above methods have the following shortcomings: lack of system verification thinking, but only adopt single component verification, which cannot effectively guarantee the stability and reliability of the system function after the components are composed of the system; lack of real environment to simulate the actual system function adjustment and triggering factors. In the actual vehicle, the signal value of the speed, for example, is fluctuating and unstable. When simulating specific working conditions, the HIL bench usually gives a certain value. At the same time, the pipeline pressure during braking may have a variable pressurization rate due to the characteristics of the hose, which may increase the complexity of the system's pressure regulation. However, it is difficult to achieve the above simulation during simulation; lack of verification and evaluation of the mechanical structure and function of the simulated actual vehicle system. Since no systematic verification method is adopted and the assembly of the actual vehicle and the mechanical actions taken are not fully simulated, the verification and evaluation of the mechanical structure cannot be achieved.

[0010] Therefore, how to design an intelligent auxiliary braking system testing device and method to achieve systematic verification of various intelligent auxiliary functions of the braking system has become a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0011] The purpose of the present invention is to provide an intelligent auxiliary brake system testing device to solve the above technical problems in the prior art. Another purpose of the present invention is to provide an intelligent auxiliary brake system testing method.

[0012] To achieve the above object, the present invention provides the following technical solutions:

[0013] A test device for an intelligent auxiliary braking system, which includes a support frame, a vehicle speed simulation mechanism, a pedal and booster operating mechanism, a control module angle adjustment mechanism, an instrument display fixing mechanism, an electronic parking operating mechanism, a brake state detection mechanism, a control system and a CAN signal simulator, wherein the pedal and booster operating mechanism are arranged on the top front support rod of the support frame, and the pedal and booster operating mechanism are used to fix the brake pedal, clutch pedal, accelerator pedal and brake booster, and control the corresponding pedal actions in order according to the test requirements; the vehicle speed simulation mechanism is arranged on the top left support rod of the support frame, and the vehicle speed simulation mechanism is used to simulate the vehicle speed required for different working conditions; the control module angle adjustment mechanism is arranged at the front end of the top right support rod of the support frame, and the control module angle adjustment mechanism is used to adjust the angle of the brake control module to simulate the vehicle body posture under different working conditions; the instrument display fixing mechanism is provided It is located on the front side of the top support plate of the support frame, and the instrument display fixing mechanism is used to fix the vehicle-mounted instrument and the central control screen; the electronic parking control mechanism has four brakes, and each of the brakes is respectively arranged on the top support plate. The distribution position of each brake is the same as the distribution position of the brake on the actual vehicle, and the electronic parking control mechanism is used to lock and unlock the brake disc of each brake; the braking state detection mechanism is arranged on the rear side of the top support plate, and the braking state detection mechanism is used to detect whether the braking system is in a braking state or a released braking state; the CAN signal simulator is used to simulate signals other than the braking system on the vehicle that participate in the braking process; the vehicle speed simulation mechanism, the pedal and booster control mechanism, the control module angle adjustment mechanism, the electronic parking control mechanism, the braking state detection mechanism and the CAN signal simulator are respectively electrically connected to the control system.

[0014] Preferably, the middle positions of the two brake discs located on the rear side of the top support plate are connected by a connecting shaft, a support frame is provided on the rear side of the top support plate, vertical plates are provided on the left and right sides of the top of the support frame, and both vertical plates are provided with through holes for the connecting shaft to pass through, and the connecting shaft is rotatably engaged with the through holes.

[0015] Preferably, the braking state detection mechanism includes a power assembly, a rotating drive gear, and a rotating driven gear. The rotating driven gear is mounted on the connecting shaft. The power assembly is arranged on the support frame and is located behind the connecting shaft. The rotating drive gear is mounted on the output shaft of the power assembly; the rotating drive gear is engaged with the rotating driven gear.

[0016] Preferably, the power assembly includes a servo motor and a reducer, the servo motor is used to drive the reducer to rotate, and the rotation drive gear is mounted on the output shaft of the reducer; the servo motor is electrically connected to the control system.

[0017] Preferably, the support frame is a rectangular structure.

[0018] Preferably, rollers are provided at the bottom of the support frame.

[0019] Preferably, the top support plate is a steel plate.

[0020] A method for testing an intelligent auxiliary braking system, comprising:

[0021] Select the working condition of intelligent assistance of the braking system and select the corresponding signal in the CAN signal simulator;

[0022] Based on the test requirements of the selected working condition, the action requirements and working sequence of the control module angle adjustment mechanism, the vehicle speed simulation mechanism, the pedal and booster operating mechanism, the electronic parking operating mechanism, and the brake state detection mechanism are set in the control system of the test device;

[0023] Start the test to check whether the working state and set steps of the test device are in compliance with the standard action requirements according to the control system settings;

[0024] Check and confirm whether the working status of each mechanism meets the test requirements. If so, continue to carry out functional testing and reliability operation according to the set working conditions; if not, shut down for investigation and improvement.

[0025] The beneficial effects of the present invention are:

[0026] The auxiliary braking system testing device and method of the present invention realize the systematic verification of various intelligent auxiliary working conditions of the braking system, making the verification more in line with the user's actual usage scenario; at the same time, it avoids the disadvantages of the existing technology of adopting the mode of decomposing components for verification, saves verification cycle and cost, and improves the accuracy of the test; and avoids the problem in the existing technology of being unable to carry out repeated verification of specific working conditions on actual vehicles, or even reaching reliability verification of more than tens of thousands of times, thereby ensuring the consistency of test conditions and scenario simulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments, and further describe the specific embodiments of the present invention in detail in conjunction with the drawings, wherein

[0028] Figure 1A schematic diagram of an intelligent auxiliary braking system testing device provided in an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of a rotating driving gear and a rotating driven gear provided by an embodiment of the present invention when they are not engaged.

[0030] In the accompanying drawings:

[0031] 1. Support frame, 2. Vehicle speed simulation mechanism, 3. Pedal and booster operating mechanism,

[0032] 4. Control module angle adjustment mechanism, 5. Instrument display fixing mechanism, 6. Brake,

[0033] 7. Braking status detection mechanism, 8. Brake fixing mechanism, 9. Top support plate,

[0034] 10. Support frame, 11. Vertical plate, 12. Connecting shaft, 13. Rotating driven gear,

[0035] 14. Rotating drive gear, 15. Power assembly, 16. Brake disc,

[0036] 17. Top left support rod, 18. Top front support rod, 19. Top right support rod. DETAILED DESCRIPTION

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0038] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0039] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0040] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0041] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides an intelligent auxiliary braking system test device, which includes a support frame 1, a vehicle speed simulation mechanism 2, a pedal and booster operating mechanism 3, a control module angle adjustment mechanism 4, an instrument display fixing mechanism 5, an electronic parking operating mechanism, a brake state detection mechanism 7, a control system and a CAN signal simulator, wherein the pedal and booster operating mechanism 3 is arranged on the top front support rod 18 of the support frame, and the pedal and booster operating mechanism 3 is used to fix the brake pedal, clutch pedal, accelerator pedal and brake booster, and control the corresponding pedals to perform corresponding movements in an orderly manner according to the test requirements; the vehicle speed simulation mechanism 2 is arranged on the top left support rod 17 of the support frame, and the vehicle speed simulation mechanism 2 is used to simulate the vehicle speed required for different working conditions; the control module angle adjustment mechanism 4 is arranged at the front end of the top right support rod 19 of the support frame, and the control module angle adjustment mechanism 4 is used to adjust the angle of the brake control module to simulate the vehicle body posture under different working conditions. condition; the instrument display fixing mechanism 5 is arranged on the front side of the top support plate 9 of the support frame, and the instrument display fixing mechanism 5 is used to fix the vehicle-mounted instrument and the central control screen; the electronic parking control mechanism has four brakes 6, and each of the brakes 6 is respectively arranged on the top support plate 9, and the distribution position of each brake is the same as the distribution position of the brake on the actual vehicle, and the electronic parking control mechanism is used to lock and unlock the brake disc of each brake; the braking state detection mechanism 7 is arranged on the rear side of the top support plate, and the braking state detection mechanism 7 is used to detect whether the braking system is in a braking state or a released braking state; the CAN signal simulator is used to simulate signals other than the braking system on the vehicle that participate in the braking process; the vehicle speed simulation mechanism 2, the pedal and booster control mechanism 3, the control module angle adjustment mechanism 4, the electronic parking control mechanism, the braking state detection mechanism and the CAN signal simulator are respectively electrically connected to the control system.

[0042] It can be understood that the brake pedal, clutch pedal, accelerator pedal and brake booster in the pedal and booster operating mechanism 3 are the same as their installation position and status on the actual vehicle, and the on-board instrument and central control screen installed on the instrument display fixing mechanism 5 are the same as their installation position and status on the actual vehicle, and the on-board instrument and central control screen can be electrically connected to the control system.

[0043] Furthermore, the middle positions of the two brake discs 16 located at the rear side of the top support plate are connected by a connecting shaft 12. A support frame 10 is provided on the rear side of the top support plate. Vertical plates 11 are provided on the left and right sides of the top of the support frame 10. Both vertical plates 11 are provided with through holes for the connecting shaft to pass through, and the connecting shaft rotates with the through holes. This solution can better support the two brake discs located at the rear side of the top support plate. The same structure can also be used to support the two brake discs located in the middle of the top support plate, which will not be described here. Each brake in the electronic parking control mechanism brakes and releases the brake disc according to the signal sent by the control system. Each brake can be installed on the top support plate 9 through the brake fixing mechanism 8.

[0044] Specifically, the braking state detection mechanism includes a power assembly 15, a rotating drive gear 14, and a rotating driven gear 13. The rotating driven gear is mounted on the connecting shaft 12. The power assembly is arranged on the support frame 10 and is located behind the connecting shaft. The rotating drive gear is mounted on the output shaft of the power assembly. The rotating drive gear is meshed with the rotating driven gear. With this solution, when the brake disc is not locked, that is, when it is unlocked, that is, when the brake system is in the brake release state, when the control system controls the power assembly to work, it will drive the rotating drive gear to rotate through its output shaft, and drive the rotating driven gear to rotate, thereby rotating the connecting shaft and then driving the brake disc to rotate. When the brake disc is locked, that is, when the brake system is in the braking state, the power assembly will not be able to drive the brake disc to rotate through the rotating drive gear. Therefore, it is possible to detect whether the brake system is in the braking state or the brake release state.

[0045] Specifically, the power assembly 15 includes a servo motor and a reducer. The servo motor is used to drive the reducer to rotate. The rotation driving gear is mounted on the output shaft of the reducer. The servo motor is electrically connected to the control system.

[0046] Preferably, the support frame 1 is a rectangular structure. In this case, the support frame can be formed by cutting and splicing square aluminum profiles, and fences can be added around it to fix the vehicle wiring harness.

[0047] Furthermore, rollers are provided at the bottom of the support frame 1 to facilitate the movement of the testing device.

[0048] Specifically, the top support plate 9 is a steel plate, preferably a thin steel plate, which can be arranged on the upper part of the support frame and has a certain distance from the top of the support frame.

[0049] An embodiment of the present invention further provides a method for testing an intelligent auxiliary braking system, which includes the following steps:

[0050] Select the working condition of intelligent assistance of the braking system and select the corresponding signal in the CAN signal simulator;

[0051] Based on the test requirements of the selected working condition, the action requirements and working sequence of the control module angle adjustment mechanism 4, the vehicle speed simulation mechanism, the pedal and booster operating mechanism, the electronic parking operating mechanism, and the brake state detection mechanism are set in the control system of the test device;

[0052] Start the test device and start the test to check whether the test device complies with the set standard action requirements when it runs according to the working state and set steps set by the control system;

[0053] Check and confirm whether the working status of each mechanism meets the set test requirements. If so, continue to carry out functional testing and reliability operation according to the set working conditions; if not, shut down for investigation and improvement.

[0054] After completing the above steps, the intelligent auxiliary braking system can simulate actual working conditions and carry out performance and reliability tests.

[0055] The intelligent auxiliary braking system testing device and method provided by the embodiments of the present invention realize the systematic verification of various intelligent working conditions of the braking system, making the verification more in line with the user's actual usage scenarios; at the same time, it solves the problem that the intelligent auxiliary function of the braking system cannot be repeatedly verified under specific working conditions on a real vehicle, or even achieves reliability verification of more than tens of thousands of times, while ensuring the consistency of the working conditions and scenario simulations; and, it also solves the existing mode of verifying the intelligent auxiliary working conditions of the braking system by decomposing components and the existing drawbacks, saving verification cycle and cost, and improving the accuracy of the test.

[0056] Since it is necessary to simulate the intelligent assistance working conditions of the braking system, the information and communication interaction between the braking system and other systems of the vehicle body must be considered. In the present invention, all components and signals of the braking system are generated through physical movement. Communication signals other than the braking system that assist and participate in the logical operations and judgments of the braking system can refer to the signal list of the intelligent assistance function of the braking system and use the CAN signal simulator to compile corresponding communication DBC files under different working conditions. In this way, after selecting the intelligent assistance working condition of the braking system, the corresponding communication DBC file can be selected in the CAN signal simulator. After connecting the communication, it is necessary to ensure that the display of the instrument and other devices are normal and the operating functions are normal. At the same time, it is necessary to ensure that the communication DBC file and the control system of the test device are running simultaneously.

[0057] The CAN signal simulator and the vehicle's brake system can achieve communication connection and information exchange through the vehicle's diagnostic interface.

[0058] In a specific embodiment, such as the hill assist function verification: the communication DBC file is started to simulate the ignition state of the actual vehicle, and the vehicle is parked on the slope and in the D gear position and all communication signals of all the actual vehicle functions are in normal state; at this time, the control system will make the control module angle adjustment mechanism 4 simulate a certain slope, and put the brake pedal in the released state and the accelerator pedal in the stepped state. At this time, the electronic parking control mechanism should unlock the brake discs of each brake, that is, the intelligent auxiliary braking system should have automatically released the parking, and the control system controls the brake state detection mechanism to work to verify the intelligent auxiliary braking Whether the system has released the parking state, that is, the control system controls the servo motor to rotate. If the servo motor can drive the brake disc to rotate, it verifies that the intelligent auxiliary braking system has automatically released the parking state, that is, released the brake. Then, after the brake disc rotates for a certain period of time, the accelerator pedal is released and the brake pedal is pressed. At this time, the intelligent auxiliary braking system should have started the electronic parking control mechanism to brake and lock each brake disc. If the servo motor of the brake status detection mechanism cannot drive the brake disc to rotate, it verifies that the intelligent auxiliary braking system has automatically controlled the vehicle to achieve braking. Otherwise, it is necessary to stop the vehicle for investigation and improvement.

[0059] Specifically, the method for identifying the required components in the braking system can be as follows: based on the BOM of the entire vehicle, identify the list of all components of the braking system and understand the forms and requirements of their mutual assembly and fixation; the control logic of the intelligent auxiliary braking system can be obtained by the following method: based on the list of intelligent auxiliary functions of the braking system, identify the signals and trigger conditions for the interaction between the system and the outside world under different working conditions.

[0060] The test device designed in this invention can be used to build brake systems that match various vehicle models. It uses a universal method to verify, control, and test the intelligent auxiliary functions of the brake system, more closely matching the actual functions and scenarios used by users, and obtaining test results that are authentic, effective, and close to the actual user's use. This invention establishes a functionally stable intelligent auxiliary brake system test device that fully matches the actual vehicle system architecture, achieving the purpose of verifying the mechanical and functional stability and reliability of the system itself, which is of great significance to the safety and quality assurance of the entire vehicle.

[0061] All the moving mechanisms in the test device of the present invention are controlled by its control system, with the working sequence arranged according to different working conditions to achieve cyclic motion. According to the specific purpose of each mechanism of the test device, each mechanism is installed on the support frame in accordance with the actual vehicle state to ensure its stability. The control system of the test device can be used to individually control and debug the movement of different mechanisms to ensure their normal function and control. The electronic parking control mechanism can be used to simulate manual intervention or operate the brake system to lock or unlock the brake disc, that is, to achieve braking and release. The on-board instrument and central control screen installed on the instrument display fixing mechanism can be electrically connected to the control system to display the working status and abnormal conditions of the brake system.

[0062] The test device of the present invention assembles the main mechanisms in the braking system on the support frame in a manner that matches the actual vehicle, and utilizes the different mechanisms in the test device to achieve stable and reliable control through the control system of the test device, thereby simulating the logical operation of the intelligent auxiliary working condition in the braking system; in addition, an external CAN simulator is used to simulate the signals that interact and determine with the entire vehicle other than the braking system, ultimately achieving functional testing and reliability testing of the intelligent auxiliary working condition. The present invention allows the internal communication of the braking system to rely entirely on the interaction of physical components, ensuring the authenticity and accuracy of the system; at the same time, the external CAN simulator simulates the signals of the entire vehicle, compiles communication files based on the working conditions of the entire vehicle, and realizes accurate interaction between the control system and the outside; and the test device and the various internal fixing mechanisms are highly scalable, and only slight adjustments are required to meet the assembly requirements of the braking systems of all existing vehicle models, thereby improving the application and practical value of the test device.

[0063] The present invention uses an external CAN simulator to simulate all communication signals of the actual vehicle under this specific working condition, except for the braking system, to realize information interaction with the entire vehicle; the braking state detection mechanism is driven by a servo motor to realize the detection of both the braking state and the braking release state, thereby improving the accuracy of the test.

[0064] The present invention adopts a system verification approach, taking into account the verification of both software and hardware. At the same time, the verification of the working conditions is consistent with actual use, and the same working conditions can achieve stability verification; it can better obtain the evaluation of the integrity and consistency of the system. The present invention solves the problem of non-system-level verification of intelligent auxiliary working conditions in the braking system, ensuring that the verification of the entire braking system is more consistent with the actual working conditions and more simulates the actual vehicle environment, ensuring the comprehensiveness, compliance and scientific nature of the test; it can also be used for the detection and life test of the intelligent functions of other systems in mass-produced vehicles. At the same time, the ideas of this process and method can also be used to establish bench testing methods for the intelligent functions of other mechanical devices.

[0065] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An intelligent auxiliary brake system testing device, characterized in that: It includes a support frame, a vehicle speed simulation mechanism, a pedal and booster operating mechanism, a control module angle adjustment mechanism, an instrument display fixing mechanism, an electronic parking operating mechanism, a brake state detection mechanism, a control system and a CAN signal simulator. The pedal and booster operating mechanism is arranged on the top front support rod of the support frame. The pedal and booster operating mechanism is used to fix the brake pedal, clutch pedal, accelerator pedal and brake booster, and control the corresponding pedal actions in order according to the test requirements; the vehicle speed simulation mechanism is arranged on the top left support rod of the support frame, and the vehicle speed simulation mechanism is used to simulate the vehicle speed required under different working conditions; the control module angle adjustment mechanism is arranged on the front end of the top right support rod of the support frame, and the control module angle adjustment mechanism is used to adjust the angle of the brake control module to simulate the vehicle body posture under different working conditions; the instrument display fixing mechanism is arranged on the support frame On the front side of the top support plate of the frame, the instrument display fixing mechanism is used to fix the vehicle-mounted instrument and the central control screen; the electronic parking control mechanism has four brakes, each of which is respectively arranged on the top support plate, and the distribution position of each brake is the same as the distribution position of the brake on the actual vehicle, and the electronic parking control mechanism is used to lock and unlock the brake disc of each brake; the brake state detection mechanism is arranged on the rear side of the top support plate, and the brake state detection mechanism is used to detect whether the brake system is in a braking state or a released brake state; the CAN signal simulator is used to simulate signals other than the brake system on the vehicle that participate in the braking process; the vehicle speed simulation mechanism, the pedal and booster control mechanism, the control module angle adjustment mechanism, the electronic parking control mechanism, the brake state detection mechanism and the CAN signal simulator are respectively electrically connected to the control system; The testing methods include: Select the working condition of intelligent assistance of the braking system and select the corresponding signal in the CAN signal simulator; Based on the test requirements of the selected working condition, the actions and working sequence of the control module angle adjustment mechanism, the vehicle speed simulation mechanism, the pedal and booster operating mechanism, the electronic parking operating mechanism, and the brake state detection mechanism are set in the control system of the test device; Start the test to check whether the working state and set steps of the test device are in compliance with the standard action requirements according to the control system settings; Check and confirm whether the working status of each mechanism meets the test requirements. If so, continue to carry out functional testing and reliability operation according to the set working conditions; if not, shut down for investigation and improvement.

2. The intelligent auxiliary brake system testing device according to claim 1, characterized in that: The middle positions of the two brake discs located on the rear side of the top support plate are connected by a connecting shaft. A support frame is provided on the rear side of the top support plate. Vertical plates are provided on the left and right sides of the top of the support frame. Both vertical plates are provided with through holes for the connecting shaft to pass through, and the connecting shaft rotates in conjunction with the through holes.

3. The intelligent auxiliary brake system testing device according to claim 2, characterized in that: The braking state detection mechanism includes a power assembly, a rotating drive gear, and a rotating driven gear. The rotating driven gear is mounted on the connecting shaft. The power assembly is arranged on the support frame and is located behind the connecting shaft. The rotating drive gear is mounted on the output shaft of the power assembly; the rotating drive gear is engaged with the rotating driven gear.

4. The intelligent auxiliary brake system testing device according to claim 3, characterized in that: The power assembly includes a servo motor and a reducer. The servo motor is used to drive the reducer to rotate. The rotation driving gear is mounted on the output shaft of the reducer. The servo motor is electrically connected to the control system.

5. The intelligent auxiliary brake system testing device according to claim 1, characterized in that: The supporting frame is a rectangular structure.

6. The intelligent auxiliary brake system testing device according to claim 5, characterized in that: Rollers are provided at the bottom of the support frame.

7. The intelligent auxiliary brake system testing device according to any one of claims 1 to 6, characterized in that: The top support plate is a steel plate.

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