Method, device and system for testing vehicle brake auxiliary system

Abstract

The invention discloses a test method, device and system for a vehicle brake auxiliary system, and the method comprises the steps: collecting real-time operation parameters of a target vehicle through a target brake auxiliary system, carrying out the format conversion and data processing of the real-time operation parameters, comparing the obtained first operation data with a first operation threshold value, and when the operation data is greater than the operation threshold value, carrying out the testing of the vehicle brake auxiliary system. Braking the vehicle to obtain braking data, generating a braking deceleration-pedal force curve according to the braking data, and determining standard braking parameters according to the curve; and carrying out emergency braking on the vehicle, carrying out validity judgment on emergency braking data through the standard braking parameters, and outputting the judged data as braking test data. The adjustment flexibility and adaptability of the braking standard parameters are improved by customizing the standard braking parameters; through the test method, a test operation method and a test evaluation method are clear and optimized, and the accuracy and reliability of a test result are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile brake assist systems, and in particular to a testing method, device and system for a vehicle brake assist system. Background Art

[0002] The Brake Assist System (BAS) can monitor human driving behavior, actively identify dangerous vehicle conditions that require emergency braking, instantly increase braking force and achieve the vehicle's maximum braking efficiency, thereby effectively shortening the braking distance under emergency conditions, reducing the chance of accidents, and significantly improving vehicle safety. Usually the BAS system is installed at the same time as the vehicle's electronic stability control system and shares software and hardware.

[0003] At present, the existing BAS testing devices, equipment or systems are generally based on other brake standard test equipment, system integration or combination. Therefore, during the test process, the existing test equipment or system is relatively complex, with poor reliability, high cost, improper evaluation methods, unclear operation methods and other problems. Summary of the invention

[0004] The present invention provides a method, device and system for testing a vehicle braking assistance system, so as to achieve the technical effect of improving the accuracy, reliability and clarity of the braking assistance system test.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a method for testing a vehicle braking assistance system, comprising the following steps:

[0006] collecting real-time operating parameters of the target vehicle through the target brake assist system, performing data conversion and data processing on the real-time operating parameters, and comparing the processed operating data with a first operating threshold;

[0007] When the operating data is greater than or equal to the first operating threshold, performing a braking operation on the target vehicle, acquiring first braking data, and calculating and determining a standard braking parameter according to a braking deceleration-pedal force curve generated by the first braking data;

[0008] An emergency braking test is performed on the target vehicle to obtain emergency braking data, and validity judgment is performed on the emergency braking data according to the standard braking parameters, and the emergency braking data that passes the validity judgment is output as braking test data.

[0009] The test method provided by the present invention first obtains the real-time operating parameters of the target vehicle through the target brake assist system, that is, collects operating data of any vehicle through the brake assist system to be tested, and converts the collected operating data into a data format that meets the system requirements, and performs exception processing on the converted data to improve the accuracy and reliability of the processed data, and compares the processed data with the first operating threshold to determine whether the vehicle has reached a stable state, that is, has reached a preset speed threshold.

[0010] If it is determined that the speed of the vehicle has reached the preset speed threshold, that is, when the operating data is greater than or equal to the operating threshold, the vehicle is braked by the brake assist system to be tested, and the braking data of the vehicle in the braking state is obtained, and the vehicle's braking deceleration-pedal force curve is calculated and generated based on the obtained braking data, that is, the curve correlation relationship between the vehicle's braking deceleration and the pedal force is determined, and the standard braking parameters are calculated based on the determined curve correlation relationship, that is, the standard braking parameters of the target braking assist system are determined, which is equivalent to determining the standard parameters of the effective data of the braking assist system, and providing reference data for the subsequent effectiveness judgment of the braking data collected by the braking assist system. At the same time, since the standard braking parameters can be determined by the user, the adjustment flexibility and adaptability of the braking standard parameters are also improved, and the calibration value of the braking standard parameters can be determined by the user.

[0011] After determining the standard braking parameters, the system will perform an emergency braking test on the target vehicle, obtain emergency braking data, and determine whether the emergency braking data collected by the brake assist system is valid based on the established standard braking parameters. Only data that the system determines has passed the validity test can be output as braking test data. In other words, only data that has passed the validity test is usable test data. While clarifying the test operation method and test evaluation method and optimizing the test method of the brake assist system, it also improves the accuracy and reliability of the test results.

[0012] As a preferred example, the collecting of real-time operating parameters of the target vehicle by the target brake assist system and the data conversion and data processing of the real-time operating parameters specifically include:

[0013] Acquire the trigger parameter, pedal force data, pedal displacement data and speed data of the target vehicle through the trigger switch, pedal force sensor, pedal displacement sensor and high-precision inertial navigation module respectively;

[0014] The trigger parameter, the pedal force data, the pedal displacement data and the speed data are integrated into the real-time operation parameter, and the real-time operation parameter is subjected to data format conversion and abnormal value identification processing to obtain the processed operation data.

[0015] In order to ensure the accuracy and practicality of the calculated standard braking parameters, the operating parameters collected by the present invention include trigger parameters, pedal force, pedal displacement, vehicle speed and other parameter data, so that the operating data subsequently calculated based on the above-mentioned operating parameters is more in line with the actual operating state of the vehicle, while also improving the practicality and reliability of the operating data.

[0016] As a preferred example, after comparing the processed operation data with the first operation threshold, the method further includes:

[0017] When the operating data is less than the first operating threshold, the operating data is stored in an operating database, and the process returns to the step of acquiring the real-time operating parameter of the target vehicle through the target brake assist system.

[0018] If the comparison result determines that the operating data is less than the operating threshold, it means that the current operating state of the target vehicle has not yet reached the conditions for testing, and the operating state of the vehicle needs to be continuously monitored until it reaches the test conditions.

[0019] As a preferred example, performing a braking operation on the target vehicle to obtain first braking data includes:

[0020] Performing a braking operation on the brake pedal of the target vehicle so that the braking deceleration of the target vehicle increases at a uniform speed until the target brake assist system achieves a full cycle;

[0021] The real-time operating parameters of the target vehicle when achieving a full cycle are obtained through the target brake assist system and used as first operating data for validity judgment, and the first operating data that passes the validity judgment is output as first braking data.

[0022] When the system determines that the current operating state of the vehicle has met the test requirements based on the vehicle's operating data, the system performs a braking operation on the vehicle, that is, uniformly increases the vehicle's braking deceleration until the braking assist system achieves a full cycle, that is, the braking assist system has reached a stable braking state. The current operating data of the vehicle can be obtained through the auxiliary system, and it is used as the first operating data to judge its validity, and the first operating data that passes the judgment is output as the first braking data, that is, whether the operating data that passes the validity judgment can be used as reference data for calculating the standard braking parameters, thereby improving the accuracy and reliability of the standard braking parameters.

[0023] As a preferred example, the step of calculating and determining the standard braking parameters based on the braking deceleration-pedal force curve generated according to the first braking data includes:

[0024] generating the braking deceleration-pedal force curve by calculation according to the braking deceleration data and the pedal force data in the first braking data, and obtaining an average deceleration-pedal force curve by calculation according to the braking deceleration-pedal force curve;

[0025] According to the first braking deceleration threshold and the second braking deceleration threshold of the average deceleration-pedal force curve, a standard braking deceleration parameter is calculated, and the pedal force data corresponding to the standard braking deceleration on the average deceleration-pedal force curve is determined as a standard pedal force parameter, and then the standard braking deceleration parameter and the standard pedal force parameter are determined as standard braking parameters.

[0026] When obtaining the standard braking parameters through the calculation of the first braking data, the system will first calculate and generate a relationship curve between the braking deceleration and the pedal force data based on the first braking data, namely, the braking deceleration-pedal force curve, and calculate and determine the relationship curve between the average deceleration of the braking deceleration and the pedal force based on the curve, namely, the average deceleration-pedal force curve. Then, the standard deceleration parameters and the standard pedal force parameters are calculated based on the generated and determined average deceleration-pedal force curve, and the determined two standard braking parameters can be used as reference standards for subsequent judgments on whether the collected data is valid, thereby improving the accuracy, reliability and effectiveness of system testing.

[0027] As a preferred example, judging the validity of the emergency braking data according to the standard braking parameters includes:

[0028] Calculating the standard braking parameter to obtain a first standard braking parameter and a second standard braking parameter, and comparing the emergency braking data with the first standard braking parameter and the second standard braking parameter in sequence to obtain a first comparison result;

[0029] If the first comparison result is that the emergency braking data is less than the first standard braking parameter, or the emergency braking data is greater than the second standard braking parameter, triggering a first signal;

[0030] If the first comparison result is that the emergency braking data is greater than the first standard braking parameter, and the emergency braking data is less than the second standard braking parameter, a second signal is triggered.

[0031] When judging the validity of the emergency braking data through the determined standard braking parameters, the system will first calculate the first standard braking parameter and the second standard braking parameter based on the determined standard braking parameters, that is, calculate two thresholds based on the standard braking parameters, and determine the validity of the emergency braking data based on the comparison results between the two thresholds and the emergency braking data.

[0032] Through the comparison results, it can be determined that the emergency braking data is valid only when the comparison results show that the emergency braking data is between the first standard braking parameters and the second standard braking parameters. The emergency braking data can be used as valid test data to test and evaluate the auxiliary braking system, which improves the accuracy and reliability of the test and evaluation of the auxiliary braking system, reduces the complexity of test data acquisition, and improves the flexibility of adjusting the test content.

[0033] As a preferred example, when the first signal is triggered, it means that the validity judgment result of the emergency braking data is failed, and a data invalidity alarm signal will be triggered.

[0034] If the comparison result shows that the emergency braking data does not pass the validity judgment of the system, the system alarm signal, i.e., the invalid data alarm signal, will be triggered, prompting the user to troubleshoot the test system, while also improving the efficiency and accuracy of system fault detection.

[0035] As a preferred example, when the second signal is triggered, it means that the validity judgment result of the emergency braking data is passed, a data validity prompt signal will be triggered, and the emergency braking data will be stored and output as braking test data.

[0036] In order to improve the integrity of the test result display, the present invention also provides a response operation after the system triggers the second signal, that is, when the system triggers the validity detection pass signal, that is, the second signal, the system will also trigger a corresponding prompt signal that the data is valid, and store and output the emergency braking data as braking test data.

[0037] Among them, the emergency braking data is output as brake test data for users to view and subsequently test and evaluate the brake assist system, while the test data is stored to facilitate the system to detect the validity of the collected data. The vehicle's brake database can also be updated through the emergency braking data.

[0038] Accordingly, an embodiment of the present invention further provides a test device for a vehicle braking assistance system, the test device comprising a data acquisition module, a data processing module and a system test module; wherein:

[0039] The data acquisition module is used to collect real-time operating parameters of the target vehicle through the target brake assist system, perform data conversion and data processing on the real-time operating parameters, and compare the processed operating data with the first operating threshold;

[0040] The data processing module is used for performing a braking operation on the target vehicle, acquiring first braking data, and calculating and determining a standard braking parameter according to a braking deceleration-pedal force curve generated by the first braking data when the operating data is greater than or equal to the first operating threshold;

[0041] The system test module is used to perform an emergency braking test on the target vehicle, obtain emergency braking data, and make a validity judgment on the emergency braking data according to the standard braking parameters, and output the emergency braking data that passes the validity judgment as braking test data.

[0042] Correspondingly, an embodiment of the present invention also provides a vehicle braking assist system testing system, the testing system comprising a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements any one of the above vehicle braking assist system testing methods when processing the computer program. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 :A flow chart of an embodiment of a method for testing a vehicle braking assistance system provided by the present invention;

[0044] Figure 2 : A structural diagram of an embodiment of a testing device for a vehicle braking assistance system provided by the present invention;

[0045] Figure 3 : A flow chart of another embodiment of a vehicle brake assist system testing method provided by the present invention;

[0046] Figure 4 : A structural diagram of another embodiment of a vehicle brake assist system test system provided by the present invention;

[0047] Figure 5 : A schematic structural diagram of a multi-function display of a vehicle braking assist system provided by the present invention. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Embodiment 1

[0050] Please refer to Figure 1, which is a flow chart of an embodiment of a method for testing a vehicle braking assist system provided by the present invention, including steps 101 to 103, each of which is specifically as follows:

[0051] Step 101: collecting real-time operating parameters of a target vehicle through a target brake assist system, performing data conversion and data processing on the real-time operating parameters, and comparing the processed operating data with a first operating threshold.

[0052] The test method provided by the embodiment of the present invention first obtains the real-time operating parameters of the target vehicle through the target brake assist system, that is, collects operating data of any vehicle through the brake assist system to be tested, and converts the collected operating data into a data format that meets the system requirements, and performs exception processing on the converted data to improve the accuracy and reliability of the processed data, and compares the processed data with the first operating threshold to determine whether the vehicle has reached a stable state, that is, reaches a preset speed threshold.

[0053] Specifically, in this embodiment, the real-time operating parameters of the target vehicle are collected by the target brake assist system, and data conversion and data processing are performed on the real-time operating parameters, specifically including:

[0054] Acquire the trigger parameter, pedal force data, pedal displacement data and speed data of the target vehicle through the trigger switch, pedal force sensor, pedal displacement sensor and high-precision inertial navigation module respectively;

[0055] The trigger parameter, the pedal force data, the pedal displacement data and the speed data are integrated into the real-time operation parameter, and the real-time operation parameter is subjected to data format conversion and abnormal value identification processing to obtain the processed operation data.

[0056] In order to ensure the accuracy and practicality of the calculated standard braking parameters, the operating parameters collected by the present invention include trigger parameters, pedal force, pedal displacement, vehicle speed and other parameter data, so that the operating data subsequently calculated based on the above-mentioned operating parameters is more in line with the actual operating state of the vehicle, while also improving the practicality and reliability of the operating data.

[0057] Furthermore, after comparing the processed operation data with the first operation threshold value, the present embodiment further includes:

[0058] When the operating data is less than the first operating threshold, the operating data is stored in an operating database, and the process returns to the step of acquiring the real-time operating parameter of the target vehicle through the target brake assist system.

[0059] If the comparison result determines that the operating data is less than the operating threshold, it means that the current operating state of the target vehicle has not yet reached the conditions for testing, and the operating state of the vehicle needs to be continuously monitored until it reaches the test conditions.

[0060] Step 102: When the operating data is greater than or equal to the first operating threshold, a braking operation is performed on the target vehicle to obtain first braking data, and a standard braking parameter is calculated and determined based on a braking deceleration-pedal force curve generated by the first braking data.

[0061] If it is determined that the speed of the vehicle has reached the preset speed threshold, that is, when the operating data is greater than or equal to the operating threshold, the vehicle is braked by the brake assist system to be tested, and the braking data of the vehicle in the braking state is obtained, and the vehicle's braking deceleration-pedal force curve is calculated and generated based on the obtained braking data, that is, the curve correlation relationship between the vehicle's braking deceleration and the pedal force is determined, and the standard braking parameters are calculated based on the determined curve correlation relationship, that is, the standard braking parameters of the target braking assist system are determined, which is equivalent to determining the standard parameters of the effective data of the braking assist system, and providing reference data for the subsequent effectiveness judgment of the braking data collected by the braking assist system. At the same time, since the standard braking parameters can be determined by the user, the adjustment flexibility and adaptability of the braking standard parameters are also improved, and the calibration value of the braking standard parameters can be determined by the user.

[0062] Specifically, the step of performing a braking operation on the target vehicle to obtain first braking data in this embodiment includes:

[0063] Performing a braking operation on the brake pedal of the target vehicle so that the braking deceleration of the target vehicle increases at a uniform speed until the target brake assist system achieves a full cycle;

[0064] The real-time operating parameters of the target vehicle when achieving a full cycle are obtained through the target brake assist system and used as first operating data for validity judgment, and the first operating data that passes the validity judgment is output as first braking data.

[0065] When the system determines that the current operating state of the vehicle has met the test requirements based on the vehicle's operating data, the system performs a braking operation on the vehicle, that is, uniformly increases the vehicle's braking deceleration until the braking assist system achieves a full cycle, that is, the braking assist system has reached a stable braking state. The current operating data of the vehicle can be obtained through the auxiliary system, and it is used as the first operating data to judge its validity, and the first operating data that passes the judgment is output as the first braking data, that is, whether the operating data that passes the validity judgment can be used as reference data for calculating the standard braking parameters, thereby improving the accuracy and reliability of the standard braking parameters.

[0066] Furthermore, in this embodiment, the step of calculating and determining the standard braking parameter based on the braking deceleration-pedal force curve generated according to the first braking data includes:

[0067] generating the braking deceleration-pedal force curve by calculation according to the braking deceleration data and the pedal force data in the first braking data, and obtaining an average deceleration-pedal force curve by calculation according to the braking deceleration-pedal force curve;

[0068] According to the first braking deceleration threshold and the second braking deceleration threshold of the average deceleration-pedal force curve, a standard braking deceleration parameter is calculated, and the pedal force data corresponding to the standard braking deceleration on the average deceleration-pedal force curve is determined as a standard pedal force parameter, and then the standard braking deceleration parameter and the standard pedal force parameter are determined as standard braking parameters.

[0069] When obtaining the standard braking parameters through the calculation of the first braking data, the system will first calculate and generate a relationship curve between the braking deceleration and the pedal force data based on the first braking data, namely, the braking deceleration-pedal force curve, and calculate and determine the relationship curve between the average deceleration of the braking deceleration and the pedal force based on the curve, namely, the average deceleration-pedal force curve. Then, the standard deceleration parameters and the standard pedal force parameters are calculated based on the generated and determined average deceleration-pedal force curve, and the determined two standard braking parameters can be used as reference standards for subsequent judgments on whether the collected data is valid, thereby improving the accuracy, reliability and effectiveness of system testing.

[0070] Step 103: Perform an emergency braking test on the target vehicle to obtain emergency braking data, and perform validity judgment on the emergency braking data according to the standard braking parameters, and output the emergency braking data that passes the validity judgment as braking test data.

[0071] After determining the standard braking parameters, the system will perform an emergency braking test on the target vehicle, obtain emergency braking data, and determine whether the emergency braking data collected by the brake assist system is valid based on the established standard braking parameters. Only data that the system determines has passed the validity test can be output as braking test data. In other words, only data that has passed the validity test is usable test data. While clarifying the test operation method and test evaluation method and optimizing the test method of the brake assist system, it also improves the accuracy and reliability of the test results.

[0072] Specifically, the validity determination of the emergency braking data according to the standard braking parameters in this embodiment includes:

[0073] Calculating the standard braking parameter to obtain a first standard braking parameter and a second standard braking parameter, and comparing the emergency braking data with the first standard braking parameter and the second standard braking parameter in sequence to obtain a first comparison result;

[0074] If the first comparison result is that the emergency braking data is less than the first standard braking parameter, or the emergency braking data is greater than the second standard braking parameter, triggering a first signal;

[0075] If the first comparison result is that the emergency braking data is greater than the first standard braking parameter, and the emergency braking data is less than the second standard braking parameter, a second signal is triggered.

[0076] When judging the validity of the emergency braking data through the determined standard braking parameters, the system will first calculate the first standard braking parameter and the second standard braking parameter based on the determined standard braking parameters, that is, calculate two thresholds based on the standard braking parameters, and determine the validity of the emergency braking data based on the comparison results between the two thresholds and the emergency braking data.

[0077] Through the comparison results, it can be determined that the emergency braking data is valid only when the comparison results show that the emergency braking data is between the first standard braking parameters and the second standard braking parameters. The emergency braking data can be used as valid test data to test and evaluate the auxiliary braking system, which improves the accuracy and reliability of the test and evaluation of the auxiliary braking system, reduces the complexity of test data acquisition, and improves the flexibility of adjusting the test content.

[0078] Furthermore, in this embodiment, when the system triggers the first signal, it means that the validity judgment result of the emergency braking data is not passed, and a data invalidity alarm signal will be triggered.

[0079] If the comparison result shows that the emergency braking data does not pass the validity judgment of the system, the system alarm signal, i.e., the invalid data alarm signal, will be triggered, prompting the user to troubleshoot the test system, while also improving the efficiency and accuracy of system fault detection.

[0080] Correspondingly, when the system provided in this embodiment triggers the second signal, it means that the validity judgment result of the emergency braking data is passed, and a data validity prompt signal will be triggered, and the emergency braking data will be stored and output as braking test data.

[0081] In order to improve the integrity of the test result display, the present invention also provides a response operation after the system triggers the second signal, that is, when the system triggers the validity detection pass signal, that is, the second signal, the system will also trigger a corresponding prompt signal that the data is valid, and store and output the emergency braking data as braking test data.

[0082] Among them, outputting the emergency braking data as brake test data is convenient for users to view and subsequently test and evaluate the brake assist system, while storing the test data makes it easier for the system to detect the validity of the collected data. At the same time, the vehicle's brake database can also be updated through the emergency braking data.

[0083] Embodiment 2

[0084] As a supplementary example to the test method provided in Example 1, accordingly, see Figure 3 , Figure 3 This is a flow chart of another embodiment of the vehicle brake assist system testing method provided by the present invention. Figure 3 It can be seen that compared with the test method provided in Example 1, the test method provided in Example 2 introduces a driver prompt step to assist the driver in making judgments and operations, thereby improving the accuracy of the driver's judgment and operations and ensuring that the test process is reasonable and effective.

[0085] like Figure 3 As shown, the testing method provided in this embodiment includes the following five steps:

[0086] Step 1: Test system initialization parameter settings.

[0087] In this embodiment, the test system is initialized with parameter settings, that is, the test parameters of the test system are customized and adjusted according to the needs of the user, which reduces the limitations of the test system and enables the user's customized development test and parameter calibration.

[0088] Step 2: The data acquisition module of the test system collects the speed, vehicle deceleration, pedal force, pedal displacement and trigger parameters of the BAS test vehicle in real time, and transmits the collected data to the data processor through the CNA line for data processing and conversion, and outputs the converted data to the display, so that the driver can observe the vehicle's brake pedal force, vehicle speed, deceleration and other information through the display.

[0089] In this embodiment, if Figure 4 As shown, Figure 4 This is a structural diagram of another embodiment of the vehicle brake assist system test system provided by the present invention. Figure 4It can be seen that the test system provided in this embodiment is composed of a data acquisition module, a data processing module, a high-precision inertial navigation GPS module and a display screen, wherein the data acquisition module is composed of a trigger switch, a pedal displacement sensor and a pedal force sensor. The data acquisition module and the high-precision inertial navigation GPS module are connected to the data processor via a CAN line, and the data processor is connected to the PC via a LAN interface.

[0090] Step 3: When the driver determines through the display that the test vehicle has reached the predetermined speed, the driver can brake the test vehicle by slowly stepping on the brake pedal, while observing the changes in the brake pedal force on the display until the display shows that the braking deceleration increases at a uniform rate until the ABS works in a full cycle. Repeat the above operation for at least 5 effective operations, and the PC test system will record the test process.

[0091] In this embodiment, the ABS is an anti-lock braking system of the vehicle, that is, the driver can continuously observe the braking deceleration of the test vehicle through the display until the anti-lock braking system of the test vehicle enters a full-cycle working state.

[0092] Step 4: The test system collects and processes the above test process data to determine the corresponding standard braking parameters. ABS and F ABS If the deceleration-time curve of a certain test, that is, the braking deceleration-time curve, is not within the allowable range of the system, that is, the validity of the first operating data is judged as described in Example 1, the test needs to be repeated until the data meets the requirements.

[0093] In this embodiment, the system calculates the average of the curves corresponding to the average deceleration and the pedal force for several independent times, and obtains and outputs the corresponding curve maF of the average deceleration and the pedal force. The maximum braking deceleration value on the maF curve is ɑ max , by setting the braking deceleration value on the maF curve to 90%ɑ max and max The average of the two values ​​of ABS , and on the maF curve it corresponds to ɑ ABS The minimum pedal force is F ABS .

[0094] After obtaining the above data, the system will further detect and judge its effectiveness. First, the moment when the brake pedal force is 20N is defined as moment t0. Accordingly, in several tests, the test vehicle must realize ABS cycle work within 2.0s±0.5s after moment t0, that is, the braking deceleration curve that changes with time should fall within the range of ±0.5s of the line connecting the two points (t0, 0) and (t0+2, ɑABS). Therefore, if the test finds that the braking deceleration of the test vehicle in a certain test fails to fall within the preset connection range, the test needs to be repeated, that is, the number of tests is increased and the ɑABS is repeated. ABS and F ABS The calculation is repeated until the data obtained by the calculation passes the above validity judgment.

[0095] Step 5: Evaluation test: The test vehicle reaches the predetermined speed, simulates emergency braking conditions to activate the vehicle's BAS function, and the test system records the test process until the test is completed.

[0096] In this embodiment, the driver determines through the display whether the test vehicle has reached the predetermined speed. If the driver determines that the vehicle has reached the predetermined speed, the vehicle will be braked quickly to simulate emergency braking. At the same time, the data acquisition module of the test system can collect brake pedal force, pedal displacement and trigger parameters in real time, and the high-precision inertial navigation GPS module can collect parameter information such as speed and vehicle deceleration.

[0097] The brake pedal force F displayed in real time on the display 实时 The data processor can judge the real-time brake pedal force according to the parameters calculated and determined in step 4, and then use this to provide the driver with an operation prompt, that is, according to whether the real-time brake pedal force is maintained at 0.5F ABS to 0.7F ABS In this embodiment, the test system prompts and judgment rules are as follows:

[0098]

[0099] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of the multi-function display of the vehicle braking assistance system provided by the present invention. Figure 5 As shown, the driver can Figure 5 The indicator light on the display shown determines whether the test data meets the system requirements. If a red light appears on the display, the test result is invalid and needs to be retested. If a green or yellow light appears on the display, the test result is valid. The PC test system records the test process.

[0100] In order to better illustrate the working principle and step flow of the testing method, device and system of the vehicle brake assist system of the present invention, it is possible but not limited to refer to the relevant records above.

[0101] Accordingly, see Figure 2 , Figure 2 This is a structural diagram of an embodiment of a test device for a vehicle braking assistance system provided by the present invention. Figure 2 As shown, the test device includes a data acquisition module 201, a data processing module 202 and a system test module 203; wherein:

[0102] The data acquisition module 201 is used to collect real-time operating parameters of the target vehicle through the target brake assist system, perform data conversion and data processing on the real-time operating parameters, and compare the processed operating data with the first operating threshold.

[0103] Furthermore, the data acquisition module 201 acquires the real-time operating parameters of the target vehicle through the target brake assist system, and performs data conversion and data processing on the real-time operating parameters, specifically including:

[0104] Acquire the trigger parameter, pedal force data, pedal displacement data and speed data of the target vehicle through the trigger switch, pedal force sensor, pedal displacement sensor and high-precision inertial navigation module respectively;

[0105] The trigger parameter, the pedal force data, the pedal displacement data and the speed data are integrated into the real-time operation parameter, and the real-time operation parameter is subjected to data format conversion and abnormal value identification processing to obtain the processed operation data.

[0106] Furthermore, after comparing the processed operation data with the first operation threshold, the data acquisition module 201 further includes:

[0107] When the operating data is less than the first operating threshold, the operating data is stored in an operating database, and the process returns to the step of acquiring the real-time operating parameter of the target vehicle through the target brake assist system.

[0108] The data processing module 202 is used to perform a braking operation on the target vehicle when the operating data is greater than or equal to the first operating threshold, obtain first braking data, and calculate and determine standard braking parameters based on a braking deceleration-pedal force curve generated by the first braking data.

[0109] Furthermore, the data processing module 202 performs a braking operation on the target vehicle to obtain first braking data, including:

[0110] Performing a braking operation on the brake pedal of the target vehicle so that the braking deceleration of the target vehicle increases at a uniform speed until the target brake assist system achieves a full cycle;

[0111] The real-time operating parameters of the target vehicle when achieving a full cycle are obtained through the target brake assist system and used as first operating data for validity judgment, and the first operating data that passes the validity judgment is output as first braking data.

[0112] Furthermore, the data processing module 202 calculates and determines standard braking parameters according to the braking deceleration-pedal force curve generated by the first braking data, including:

[0113] generating the braking deceleration-pedal force curve by calculation according to the braking deceleration data and the pedal force data in the first braking data, and obtaining an average deceleration-pedal force curve by calculation according to the braking deceleration-pedal force curve;

[0114] According to the first braking deceleration threshold and the second braking deceleration threshold of the average deceleration-pedal force curve, a standard braking deceleration parameter is calculated, and the pedal force data corresponding to the standard braking deceleration on the average deceleration-pedal force curve is determined as a standard pedal force parameter, and then the standard braking deceleration parameter and the standard pedal force parameter are determined as standard braking parameters.

[0115] The system test module 203 is used to perform an emergency braking test on the target vehicle, obtain emergency braking data, and make a validity judgment on the emergency braking data according to the standard braking parameters, and output the emergency braking data that passes the validity judgment as braking test data.

[0116] Furthermore, the system testing module 203 performs validity judgment on the emergency braking data according to the standard braking parameters, including:

[0117] Calculating the standard braking parameter to obtain a first standard braking parameter and a second standard braking parameter, and comparing the emergency braking data with the first standard braking parameter and the second standard braking parameter in sequence to obtain a first comparison result;

[0118] If the first comparison result is that the emergency braking data is less than the first standard braking parameter, or the emergency braking data is greater than the second standard braking parameter, triggering a first signal;

[0119] If the first comparison result is that the emergency braking data is greater than the first standard braking parameter, and the emergency braking data is less than the second standard braking parameter, a second signal is triggered.

[0120] Furthermore, when the system test module 203 triggers the first signal, it means that the validity judgment result of the emergency braking data is not passed, and a data invalidity alarm signal will be triggered.

[0121] Furthermore, when the system test module 203 triggers the second signal, it means that the validity judgment result of the emergency braking data is passed, and a data validity prompt signal will be triggered, and the emergency braking data will be stored and output as braking test data.

[0122] Correspondingly, an embodiment of the present invention also provides a vehicle braking assist system testing system, the testing system comprising a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements any one of the above vehicle braking assist system testing methods when processing the computer program.

[0123] In summary, the embodiments of the present invention provide a method, device and system for testing a vehicle braking assist system. The target braking assist system collects and performs format conversion and data processing on the real-time operating parameters of the target vehicle, compares the first operating data obtained with the first operating threshold, and when the operating data is greater than the operating threshold, brakes the vehicle to obtain braking data, generates a braking deceleration-pedal force curve based on the braking data, and determines the standard braking parameters based on the curve; performs emergency braking on the vehicle, judges the validity of the emergency braking data through the standard braking parameters, and outputs the judged data as braking test data. By customizing the standard braking parameters, the adjustment flexibility and adaptability of the braking standard parameters are improved; through the above-mentioned testing method, the test operation method and test evaluation method are clarified and optimized, and the accuracy and reliability of the test results are improved.

[0124] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for testing a vehicle braking assistance system, characterized in that: The following steps are involved: collecting real-time operating parameters of the target vehicle through the target brake assist system, performing data conversion and data processing on the real-time operating parameters, and comparing the processed operating data with a first operating threshold; When the operating data is greater than or equal to the first operating threshold, performing a braking operation on the target vehicle, acquiring first braking data, and calculating and determining a standard braking parameter according to a braking deceleration-pedal force curve generated by the first braking data; An emergency braking test is performed on the target vehicle to obtain emergency braking data, and validity judgment is performed on the emergency braking data according to the standard braking parameters, and the emergency braking data that passes the validity judgment is output as braking test data.

2. A vehicle brake assist system testing method as claimed in claim 1, characterized in that: The step of collecting the real-time operating parameters of the target vehicle through the target brake assist system and performing data conversion and data processing on the real-time operating parameters specifically includes: Acquire the trigger parameter, pedal force data, pedal displacement data and speed data of the target vehicle through the trigger switch, pedal force sensor, pedal displacement sensor and high-precision inertial navigation module respectively; The trigger parameter, the pedal force data, the pedal displacement data and the speed data are integrated into the real-time operation parameter, and the real-time operation parameter is subjected to data format conversion and abnormal value identification processing to obtain the processed operation data.

3. A vehicle brake assist system testing method as claimed in claim 1, characterized in that: After comparing the processed operation data with the first operation threshold, the method further includes: When the operating data is less than the first operating threshold, the operating data is stored in an operating database, and the process returns to the step of acquiring the real-time operating parameter of the target vehicle through the target brake assist system.

4. A vehicle brake assist system testing method as claimed in claim 1, characterized in that: The step of performing a braking operation on the target vehicle to obtain first braking data includes: Performing a braking operation on the brake pedal of the target vehicle so that the braking deceleration of the target vehicle increases at a uniform speed until the target brake assist system achieves a full cycle; The real-time operating parameters of the target vehicle when achieving a full cycle are obtained through the target brake assist system and used as first operating data for validity judgment, and the first operating data that passes the validity judgment is output as first braking data.

5. A vehicle brake assist system testing method as claimed in claim 1, characterized in that: The calculating and determining the standard braking parameter according to the braking deceleration-pedal force curve generated according to the first braking data includes: generating the braking deceleration-pedal force curve by calculation according to the braking deceleration data and the pedal force data in the first braking data, and obtaining an average deceleration-pedal force curve by calculation according to the braking deceleration-pedal force curve; According to the first braking deceleration threshold and the second braking deceleration threshold of the average deceleration-pedal force curve, a standard braking deceleration parameter is calculated, and the pedal force data corresponding to the standard braking deceleration on the average deceleration-pedal force curve is determined as a standard pedal force parameter, and then the standard braking deceleration parameter and the standard pedal force parameter are determined as standard braking parameters.

6. A vehicle brake assist system testing method as claimed in claim 1, characterized in that: The determining the validity of the emergency braking data according to the standard braking parameters includes: Calculating the standard braking parameter to obtain a first standard braking parameter and a second standard braking parameter, and comparing the emergency braking data with the first standard braking parameter and the second standard braking parameter in sequence to obtain a first comparison result; If the first comparison result is that the emergency braking data is less than the first standard braking parameter, or the emergency braking data is greater than the second standard braking parameter, triggering a first signal; If the first comparison result is that the emergency braking data is greater than the first standard braking parameter, and the emergency braking data is less than the second standard braking parameter, a second signal is triggered.

7. A vehicle brake assist system testing method as claimed in claim 6, characterized in that: When the first signal is triggered, it means that the validity judgment result of the emergency braking data is not passed, and a data invalidity alarm signal will be triggered.

8. A vehicle brake assist system testing method as claimed in claim 6, characterized in that: When the second signal is triggered, it means that the validity judgment result of the emergency braking data is passed, a data validity prompt signal will be triggered, and the emergency braking data will be stored and output as braking test data.

9. A test device for a vehicle braking assist system, characterized in that: The test device includes a data acquisition module, a data processing module and a system test module; wherein: The data acquisition module is used to collect real-time operating parameters of the target vehicle through the target brake assist system, perform data conversion and data processing on the real-time operating parameters, and compare the processed operating data with the first operating threshold; The data processing module is used for performing a braking operation on the target vehicle, acquiring first braking data, and calculating and determining a standard braking parameter according to a braking deceleration-pedal force curve generated by the first braking data when the operating data is greater than or equal to the first operating threshold; The system test module is used to perform an emergency braking test on the target vehicle, obtain emergency braking data, and make a validity judgment on the emergency braking data according to the standard braking parameters, and output the emergency braking data that passes the validity judgment as braking test data.

10. A vehicle brake assist system test system, characterized in that: The test system includes a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor processes the computer program, it implements a vehicle brake assist system test method as described in any one of claims 1-8.

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