Road Durability Test Method, Equipment and Storage Medium for Vehicle Electronic Braking System

Abstract

The present invention relates to the field of data processing, and discloses a road durability test method, device and storage medium for a vehicle electronic braking system. The method includes: controlling a target vehicle to operate according to a preset test specification under a preset working condition, and monitoring preset parameters during the operation, wherein an electronic braking system (EBS) is installed on the target vehicle; determining a test result of the vehicle electronic braking system according to the data of the monitored preset parameters; wherein the preset test specification is determined based on the application scenario of the target vehicle and / or the driving behavior habits of the driver when driving the target vehicle. This embodiment improves the test accuracy.

Description

Technical Field

[0001] The present invention relates to the field of data processing, and particularly to a road durability test method, device and storage medium for a vehicle electronic braking system. Background Art

[0002] With the continuous upgrading of vehicle intelligence, there are more and more in-vehicle electronic control systems, such as electronic control unit (ECU), advanced driver assistance system (ADAS), electronic braking system (EBS) and electronic parking brake system (EPB).

[0003] Among them, in order to ensure that the electronic braking system (EBS) can work properly when installed on the target vehicle, a road durability test needs to be carried out on the vehicle electronic braking system.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a road durability test method, device and storage medium for a vehicle electronic braking system, which improves the test accuracy.

[0006] An embodiment of the present invention provides a road durability test method for a vehicle electronic braking system, the method comprising:

[0007] Controlling a target vehicle to run according to a preset test specification under a preset working condition, and monitoring preset parameters during the running process, wherein an electronic braking system (EBS) is installed on the target vehicle;

[0008] Determining a test result of the vehicle electronic braking system according to the data of the monitored preset parameters;

[0009] Wherein, the preset test specification is determined based on the application scenario of the target vehicle and / or the driving behavior habit of the driver when driving the target vehicle.

[0010] An embodiment of the present invention provides an electronic device, the electronic device comprising:

[0011] A processor and a memory;

[0012] The processor is configured to execute the steps of the road durability test method for the vehicle electronic braking system according to any one of the embodiments by calling a program or instruction stored in the memory.

[0013] An embodiment of the present invention provides a computer-readable storage medium, the computer-readable storage medium stores a program or instruction, and the program or instruction causes a computer to execute the steps of the road durability test method for the vehicle electronic braking system according to any one of the embodiments.

[0014] The embodiments of the present invention have the following technical effects:

[0015] By determining a preset working condition based on the application scenario of the target vehicle, and determining a preset test specification based on the application scenario of the target vehicle and / or the driving behavior habits of the driver when driving the target vehicle, then controlling the target vehicle to operate according to the preset test specification under the preset working condition, and monitoring preset parameters during the operation, and determining the test result of the vehicle electronic braking system according to the data of the monitored preset parameters, it overcomes the problems of incomplete assessment, long cycle, high cost, etc. of the EBS system in the vehicle durability test, thereby achieving a special assessment of the vehicle EBS system, improving the test accuracy, and being beneficial to the improvement of the product power of the EBS system. Description of the Drawings

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0017] Figure 1 It is a flowchart of a road durability test method for a vehicle electronic braking system provided by an embodiment of the present invention;

[0018] Figure 2 It is a schematic flowchart of a road durability test for a vehicle electronic braking system provided by an embodiment of the present invention;

[0019] Figure 3 It is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0021] The road durability test method for the vehicle electronic braking system provided by the embodiment of the present invention can be executed by an electronic device, aiming to timely discover various problems (including hardware and software) existing in the target vehicle through this test method, and then solve the problems to make the target vehicle meet the requirements for driving on the road.

[0022] Specifically, Figure 1It is a flowchart of a road durability test method for a vehicle electronic braking system provided by an embodiment of the present invention. The road durability test method for the vehicle electronic braking system specifically includes the following steps:

[0023] S110. Control the target vehicle to run according to a preset test specification under a preset working condition, and monitor preset parameters during the running process. An electronic braking system (EBS) is installed on the target vehicle.

[0024] The target vehicle refers to a vehicle to be tested equipped with an electronic braking system (EBS). Specifically, the target vehicle is usually a heavy commercial vehicle (such as a semi-trailer truck, a large muck truck).

[0025] The preset working condition refers to the road on which the target vehicle travels during the test, the weather, temperature at that time, and the load of the target vehicle, etc., which can be determined based on the application scenario of the target vehicle. For example, the roads on which heavy commercial vehicles generally travel include highways, national roads, provincial roads, and long downhill mountain roads, and the climate conditions include high temperature, plateau, and high cold, etc.

[0026] The preset test specification refers to information such as the vehicle speed when guiding the target vehicle to travel, the braking force during braking, and the braking frequency.

[0027] The preset parameters are, for example, the acceleration and traction force of the target vehicle.

[0028] The electronic braking system (EBS) can be installed on the target vehicle before the target vehicle leaves the factory, or can be installed on the target vehicle through modification after the target vehicle leaves the factory.

[0029] In order to overcome the problems of incomplete assessment of the EBS system in the vehicle durability road test, long cycle, high cost, etc., and achieve a special assessment of the vehicle EBS system, in the embodiment of the present invention, the preset working condition is determined according to the application scenario of the target vehicle, the preset test specification is determined according to the application scenario of the target vehicle and / or the driving behavior habits of the driver when driving the target vehicle, then control the target vehicle to run according to the preset test specification under the preset working condition, and monitor the preset parameters during the running process, and determine the test result of the vehicle electronic braking system according to the data of the monitored preset parameters.

[0030] Further, the preset working condition includes a test field working condition and a social road working condition, and the preset test specification includes a first specification adapted to the test field working condition and a second specification adapted to the social road working condition.

[0031] Among them, the road in the test field working condition refers to a road dedicated to testing, and only the target vehicle to be tested is allowed to drive in, while other vehicles are not allowed to drive in to ensure the safety of each vehicle.

[0032] The roads in the social road conditions refer to public social roads, such as national roads, provincial roads, highways, etc. that any vehicle can drive on.

[0033] In order to maximize the occurrence of problems in the target vehicle, the test site conditions include one or more test factors among road conditions (such as highways, national roads, provincial roads, long downhill roads), weather (such as sunny, cloudy, rainy, snowy), temperature, mileage, and load (such as unloaded, half-loaded, fully-loaded). The social road conditions include one or more test factors among road conditions (such as highways, national roads, provincial roads, long downhill roads), weather (such as sunny, cloudy, rainy, snowy), temperature, mileage, and load (such as unloaded, half-loaded, fully-loaded). By covering as comprehensively as possible the actual operating environment of the target vehicle, it is promoted that the target vehicle has test problems, and then corresponding improvements are made to the problems that occur to achieve the purpose of improving the driving safety of the target vehicle.

[0034] Based on the above test purposes, the preset test specifications are determined according to the driving behavior habits of driver masters in different scenarios. Under the premise of ensuring the safe driving of the target vehicle through the preset test specifications, the electronic braking system EBS is actuated as much as possible, and the intensity and frequency of operation execution are strengthened to test the reliability of the hardware and software of the electronic braking system EBS and the robustness of the entire system. In this way, the test cycle can be reduced and the cost can be lowered for the entire special road test.

[0035] Specifically, the target vehicle is usually a heavy commercial vehicle (such as a semi-trailer, a large muck truck). The roads on which these heavy commercial vehicles generally drive are highways / national roads / provincial roads / long downhill mountain roads, and the climatic conditions are high temperature / plateau / high cold. The test intensities of these three extreme environments have covered the test intensities of some conventional environments and are of representative significance. By designing the road / environment types of the test conditions based on the usage scenarios and extreme environment conditions after the user purchases the vehicle, it is of representative significance and can improve the test accuracy.

[0036] S120. Determine the test result of the vehicle electronic braking system according to the data of the monitored preset parameters.

[0037] The preset parameters include one or more of the braking force distributed to each axle, the mass of the target vehicle, and the speed of the target vehicle. Taking the mass of the target vehicle as an example of the preset parameter, if the error between the mass of the target vehicle determined by the vehicle electronic braking system and the mass of the target vehicle obtained by pre-weighing exceeds the threshold, it can be determined that there is a hardware failure in the vehicle electronic braking system, such as a failure of the acceleration sensor or a failure of the component for determining the traction force.

[0038] Exemplarily, refer to the corresponding table of a social road condition and a second specification adapted thereto as shown in Table 1.

[0039] Table 1: Correspondence Table of a Social Road Condition and the Adapted Second Specification

[0040]

[0041] The meaning expressed in the above Table 1 is as follows: The total test mileage of the target vehicle under social road conditions in high temperature or plateau areas should reach at least 15,000 kilometers. Among them, the test mileage on highways should reach at least 15,000×0.2 = 3,000 kilometers, and the total test mileage on national roads, provincial roads, and long downhill roads should reach at least 15,000×0.8 = 12,000 kilometers. During the test, the target vehicle is tested on highways in various weather conditions with no load, 30% load, half load, 20% load, and full load. It is required that when the target vehicle encounters a service area, it enters the service area and performs medium / light braking deceleration; among them, light braking means that the displacement of the brake pedal is 20% of the total displacement, medium braking means that the displacement of the brake pedal is 50% of the total displacement, heavy braking means that the displacement of the brake pedal is 80% of the total displacement, and full braking means that the displacement of the brake pedal is 100% of the total displacement. The target vehicle is tested on national roads and provincial roads in various weather conditions with no load, 30% load, half load, 20% load, and full load. It is required that the target vehicle performs medium braking every ten minutes, decelerating from 60 km / h to 30 km / h. The target vehicle is tested on long downhill roads in various weather conditions with no load, 30% load, half load, 20% load, and full load. It is required that the target vehicle performs heavy / medium / light / mixed braking, where mixed braking means using multiple braking methods simultaneously, such as using the electronic braking system and retarder braking simultaneously; when testing on long downhill roads, the driving comfort and braking heat fade performance of the target vehicle during braking are mainly tested. The meaning expressed by the test environment shown in Table 1 for social roads in cold regions is the same as that for the above high temperature / plateau social roads and will not be elaborated. Under social road conditions, the braking comfort of the vehicle's electronic braking system, verification of the coordination between the tractor and the trailer, verification of fault code output, mass estimation, ramp estimation, bridge control pressure response, mixed braking performance, braking heat fade performance, standby pressure valve status, etc. are mainly tested.

[0042] Refer to the correspondence table of a test field condition and the adapted first specification shown in Table 2 below.

[0043] Table 2: Correspondence Table of a Test Field Condition and the Adapted First Specification

[0044]

[0045] The meaning expressed in Table 2 above is as follows: The target vehicle drives a total mileage of 2000 km on gravel roads, slippery roads, ABS high-adhesion braking roads, standard slope roads, durability loops, connecting roads, and washboard roads with no load, 30% load, half load, 20% load, and full load respectively. During driving on gravel roads, full braking is performed from 40 km / h to 0 km / h, and this operation is continuously performed 4 times; during driving on slippery roads, full braking is performed from 50 km / h to 20 km / h, and then full braking to 0 km / h after waiting for 1 second, and this operation is continuously performed 4 times; during driving on ABS high-adhesion braking roads, full braking is performed from 80 km / h to 0 km / h, then medium acceleration to 80 km / h and driving for 1 km followed by full braking to 0 km / h, and this operation is continuously performed 6 times; on standard slope roads, continuous slope parking is performed 3 times on the 18% / 12% standard slope - uphill, waiting for 30 seconds between each two times, and continuous slope parking is performed 3 times on the downhill, waiting for 30 seconds between each two times; on washboard roads, mixed braking is continuously performed 2 times before each washboard; on durability loops, the vehicle speed is 60 km / h, and light / medium / heavy / mixed braking is continuously performed every 100 m (according to road signs) for 5 laps; on connecting roads, indeterminate force braking is performed at each intersection. Under the test field conditions, the ramp parking performance, tractor-trailer coordination verification, fault code output verification, ABS performance, axle control pressure response, mass estimation, ramp estimation, mixed braking performance, pressure valve state test, etc. of the vehicle's electronic braking system are mainly tested.

[0046] Generally speaking, the control target vehicle runs according to the preset test specifications under the preset working conditions, and monitors the preset parameters during the running process, including:

[0047] Control the target vehicle to run according to the first specification under the test field conditions, and monitor the preset parameters during the running process to obtain the first data of the preset parameters;

[0048] Determining the test result of the vehicle electronic braking system according to the data of the monitored preset parameters includes:

[0049] Determine the first result of the preset performance index of the vehicle electronic braking system according to the first data of the preset parameters; if the first result meets the first preset condition (for example, when the difference between the first result and the preset value is less than the set value, it is determined that the first result meets the first preset condition), then control the target vehicle to run according to the second specification under the social road conditions, and monitor the preset parameters during the running process; determine the second result of the preset performance index of the vehicle electronic braking system according to the second data of the monitored preset parameters; determine the test result of the vehicle electronic braking system according to the second result.

[0050] For example, the preset parameters are the acceleration and traction force of the target vehicle. According to the preset parameters, the estimated mass of the target vehicle (i.e., the preset performance index) can be determined, and whether the mass estimation function of the vehicle electronic braking system meets the requirements is determined according to the error between the estimated mass and the standard mass of the target vehicle.

[0051] Exemplarily, controlling the target vehicle to run according to the first specification under the test field conditions includes at least one of the following:

[0052] Controlling the target vehicle to continuously perform a first number of first braking actions under a first road condition, where the first braking action is to fully brake from a first speed to a speed of 0; for example, during driving on a gravel road, perform a full brake from 40 km / h to 0 km / h, and this operation is continuously performed 4 times.

[0053] Controlling the target vehicle to continuously perform a first number of second braking actions under a second road condition, where the second braking action is to fully brake from a second speed to a second sub-speed and then, after delaying for a first duration, fully brake to a speed of 0; for example, during driving on a slippery road, perform a full brake from 50 km / h to 20 km / h, wait for 1 second, and then fully brake to 0 km / h, and this operation is continuously performed 4 times.

[0054] Controlling the target vehicle to continuously perform a second number of third braking actions under a third road condition, where the third braking action is a hybrid braking; for example, on a washboard road, perform hybrid braking continuously 2 times before each washboard.

[0055] Controlling the target vehicle to continuously perform a third number of fourth braking actions under a fourth road condition, where the fourth braking action is to fully brake from a third speed to a speed of 0, then accelerate to the third speed, and after driving a first distance at the third speed, fully brake to a speed of 0; for example, during driving on an ABS high-adhesion braking road, perform a full brake from 80 km / h to 0 km / h, then accelerate to 80 km / h, and then, after driving 1 km, fully brake to 0 km / h, and this operation is continuously performed 6 times.

[0056] Controlling the target vehicle to continuously perform a fourth number of fifth braking actions under a fifth road condition, where the fifth braking action is a downhill parking action, and the downhill parking duration is a second duration; for example, on a downhill road, continuously park 3 times, and each parking duration is 30 seconds.

[0057] Controlling the target vehicle to continuously perform a fourth number of sixth braking actions under a sixth road condition, where the sixth braking action is an uphill parking action, and the uphill parking duration is a second duration; for example, on an uphill road, continuously park 3 times, and each parking duration is 30 seconds.

[0058] Control the target vehicle to continuously perform the seventh braking action for the fifth time under the seventh road condition. The seventh braking action is a hybrid braking from the fourth speed at the first frequency. For example, on a durability loop, the vehicle speed is 60 km / h for hybrid braking and runs continuously for 5 laps.

[0059] The control of the target vehicle to operate according to the second specification under the social road condition includes at least one of the following:

[0060] When controlling the target vehicle to drive on a highway, when passing by a service area, drive through the service area and perform hybrid braking while driving through the service area;

[0061] When controlling the target vehicle to drive on a national highway and / or a provincial highway, perform medium braking operations at the second frequency;

[0062] Control the target vehicle to perform hybrid braking on a downhill road.

[0063] The technical solution of the embodiment of the present invention: Through the special road test assessment of the vehicle EBS system, verify the reliability of the entire system hardware and the defects of the design. The reliability verification of the system hardware corresponds to the reliability road tests on the test field and social roads, including performing various complex specifications under various complex road conditions to verify the reliability of the system hardware in special environments. Discover problems through special tests and check whether the causes of the problems are due to hardware design defects, hardware quality defects, hardware process defects, etc. Thus, the purpose of comprehensively assessing the hardware is achieved. The execution of the working conditions refers to the test field working conditions and social road working conditions listed above until the mileage reaches the standard. All hardware problems occurring during this period will be checked and confirmed.

[0064] Through the long-term intensive road test of the vehicle EBS system, assess the accuracy of some parameter estimations such as quality estimation, adhesion estimation, and braking management at the software level of the vehicle EBS system. The accuracy and robustness at the software level are the same. It is mainly to comprehensively execute the test field and social road specifications, record the vehicle's messages through professional equipment, and then judge whether the EBS algorithm is executed accurately according to the driver's master's specifications, and whether there are problems such as performance decay or internal calculation error increase due to long-term and high-intensity road tests. Among them, quality estimation is calculated by F = MA, adhesion estimation refers to the calculation of wheel speed recovery, and braking management distributes braking force according to the load configuration.

[0065] By conducting long-term intensive road tests on the vehicle's EBS system, problems are discovered, investigated, solved, and verified to improve product strength. The improvement of product strength requires continuous testing and verification. The definition of the product reliability of the EBS system is that within a certain working time and mileage, the frequency of hardware and software failures of the product will not increase due to the intensification of the environment or working conditions. In other words, even if the environment or working conditions intensify, the vehicle's EBS system can maintain good performance, with a low failure rate, in good overall condition, and will not change its performance due to the harshness of the external environment or working conditions.

[0066] Based on the above technical solutions, referring to Figure 2 the schematic diagram of a road durability test process for a vehicle electronic control system shown as follows, specifically including: installation of the vehicle's EBS system - execution of test site working conditions - testing the reliability of the hardware and software of the vehicle's EBS system, the accuracy of the fault diagnosis of the vehicle's EBS system, and the ability to identify safety risks in advance; after passing the test site working condition test, execute the social road working conditions - test the stability of the vehicle's EBS system, performance degradation, quality estimation, and other internal data and hardware reliability. During the test, relevant data is transmitted to the EBS main control through the CAN communication module.

[0067] The test site working conditions are executed first mainly because in the environment of a closed road, intensive road tests are carried out to assess the reliability of the system and avoid the insecurity of directly conducting road tests on social roads. By performing standardized tests on various road surfaces in the test site to test the performance of the vehicle and the accuracy of internal algorithm calculations, it is determined whether the vehicle's EBS system meets the conditions for conducting tests on social roads.

[0068] The execution of social working conditions is mainly based on the vehicle's usage scenarios and driver operating habits, which can make the test closer to users and more realistic. By the driver's operations, it is judged whether the quality estimation, vehicle speed estimation, and braking force distribution at the software level of the vehicle are within a reasonable range. If problems occur, the causes are investigated in a timely manner, rectified, and verified. After ensuring that the verification is passed, the real vehicle is equipped. The hardware assessment mainly includes the main control PCBA board, front and rear axle valves, trailer valves, electronic foot valves, etc. The software assessment mainly includes the underlying software and application layer algorithms (fault diagnosis, quality estimation, braking management, vehicle speed estimation, etc.).

[0069] An embodiment of the present invention further provides a road durability test device for a vehicle electronic braking system. The device includes: a control module, configured to control a target vehicle to operate according to a preset test specification under a preset working condition, and monitor preset parameters during the operation. An electronic braking system (EBS) is installed on the target vehicle; a determination module, configured to determine a test result of the vehicle electronic braking system according to data of the monitored preset parameters; wherein, the preset working condition is determined based on an application scenario of the target vehicle, and the preset test specification is determined based on the application scenario of the target vehicle and / or driving behavior habits of a driver when driving the target vehicle.

[0070] Figure 3 It is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. As Figure 3 shown, the electronic device 400 includes one or more processors 401 and a memory 402.

[0071] The processor 401 may be a central processing unit (CPU) or other forms of processing units with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 400 to perform desired functions.

[0072] The memory 402 may include one or more computer program products, and the computer program products may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory, etc. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 401 may run the program instructions to implement the road durability test method of the vehicle electronic braking system according to any embodiment of the present invention described above and / or other desired functions. Various contents such as initial external parameters and thresholds may also be stored in the computer-readable storage medium.

[0073] In one example, the electronic device 400 may further include: an input device 403 and an output device 404, and these components are interconnected through a bus system and / or other forms of connection mechanisms (not shown). The input device 403 may include, for example, a keyboard, a mouse, etc. The output device 404 may output various information to the outside, including warning prompt information, braking force, etc. The output device 404 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0074] Of course, for simplicity, Figure 3Only some of the components related to the present invention in the electronic device 400 are shown, and components such as buses, input / output interfaces, etc. are omitted. In addition, according to specific application scenarios, the electronic device 400 may further include any other appropriate components.

[0075] In addition to the above methods and devices, an embodiment of the present invention may also be a computer program product, which includes computer program instructions that, when run by a processor, cause the processor to execute the steps of the road durability test method for a vehicle electronic braking system provided in any embodiment of the present invention.

[0076] The computer program product may be written in any combination of one or more programming languages for programming code to perform the operations of the embodiments of the present invention. The programming languages include object-oriented programming languages such as Java, C++, etc., and also include conventional procedural programming languages such as the "C" language or similar programming languages. The programming code may be executed entirely on the user computing device, partially on the user device, executed as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0077] In addition, an embodiment of the present invention may also be a computer-readable storage medium, on which computer program instructions are stored, and the computer program instructions, when run by a processor, cause the processor to execute the steps of the road durability test method for a vehicle electronic braking system provided in any embodiment of the present invention.

[0078] The computer-readable storage medium may adopt any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may include, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0079] It should be noted that the terms used in this invention are only for describing specific embodiments and do not limit the scope of this application. As shown in the specification of this invention, unless the context clearly indicates otherwise, words such as "a", "an", "one" and / or "the" do not specifically refer to the singular and may also include the plural. The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method or device comprising the said element.

[0080] It should also be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this invention can be understood according to specific circumstances.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this invention and not to limit them; although this invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of this invention.

Claims

1. A road durability test method for a vehicle's electronic braking system, characterized in that, the method includes: Controlling the target vehicle to operate according to a preset test specification under a preset working condition, and monitoring preset parameters during the operation. An electronic braking system (EBS) is installed on the target vehicle. It includes: controlling the target vehicle to operate according to a first specification under a test field working condition, and monitoring the preset parameters during the operation to obtain first data of the preset parameters; The controlling the target vehicle to operate according to the first specification under the test field working condition includes at least one of the following: Controlling the target vehicle to continuously perform a first number of first braking actions under a first road condition, where the first braking action is to fully brake from a first speed to a speed of 0; Controlling the target vehicle to continuously perform a first number of second braking actions under a second road condition, where the second braking action is to fully brake from a second speed to a second sub-speed, delay for a first duration, and then fully brake to a speed of 0; Controlling the target vehicle to continuously perform a second number of third braking actions under a third road condition, where the third braking action is a combined braking; Controlling the target vehicle to continuously perform a third number of fourth braking actions under a fourth road condition, where the fourth braking action is to fully brake from a third speed to a speed of 0, then accelerate to the third speed, and fully brake to a speed of 0 after driving a first distance at the third speed; Controlling the target vehicle to continuously perform a fourth number of fifth braking actions under a fifth road condition, where the fifth braking action is a downhill parking braking action, and the downhill parking braking duration is a second duration; Controlling the target vehicle to continuously perform a fourth number of sixth braking actions under a sixth road condition, where the sixth braking action is an uphill parking braking action, and the uphill parking braking duration is a second duration; Controlling the target vehicle to continuously perform a fifth number of seventh braking actions under a seventh road condition, where the seventh braking action is to perform combined braking from a fourth speed at a first frequency; Determining the test result of the vehicle's electronic braking system according to the monitored data of the preset parameters; wherein, the preset working condition is determined based on the application scenario of the target vehicle, and the preset test specification is determined based on the application scenario of the target vehicle and / or the driving behavior habits of the driver when driving the target vehicle.

2. The method according to claim 1, characterized in that, the preset working condition includes a test field working condition and a social road working condition, and the preset test specification includes a first specification adapted to the test field working condition and a second specification adapted to the social road working condition.

3. The method according to claim 2, characterized in that, the determining the test result of the vehicle's electronic braking system according to the monitored data of the preset parameters includes: Determining a first result of the preset performance index of the vehicle's electronic braking system according to the first data of the preset parameters; If the first result meets a first preset condition, then controlling the target vehicle to operate according to the second specification under the social road working condition, and monitoring the preset parameters during the operation; Determine the second result of the preset performance index according to the second data of the monitored preset parameter; Determine the test result of the vehicle electronic braking system according to the second result; Wherein, the data of the preset parameter includes the first data and the second data.

4. The method according to claim 3, wherein, The test site conditions include one or more test factors among road conditions, weather, temperature, mileage, and load, and the social road conditions include one or more test factors among road conditions, weather, temperature, mileage, and load.

5. The method according to claim 3, wherein, Controlling the target vehicle to run according to the second specification under the social road conditions includes at least one of the following: When controlling the target vehicle to drive on a highway, passing through the service area when passing by the service area, and performing hybrid braking when passing through the service area; When controlling the target vehicle to drive on a national highway and / or provincial highway, performing medium braking operations at a second frequency; Controlling the target vehicle to perform hybrid braking on a downhill road.

6. The method according to claim 1, wherein, The preset parameter includes one or more of the braking force allocated to each axle, the mass of the target vehicle, and the speed of the target vehicle.

7. A road durability test device for a vehicle electronic braking system, wherein, The device includes: A control module for controlling the target vehicle to run according to a preset test specification under preset conditions, and monitoring the preset parameter during the running process. Among them, an electronic braking system EBS is installed on the target vehicle; including: controlling the target vehicle to run according to the first specification under the test site conditions, and monitoring the preset parameter during the running process to obtain the first data of the preset parameter; The controlling the target vehicle to run according to the first specification under the test site conditions includes at least one of the following: Controlling the target vehicle to continuously perform the first number of first braking actions under the first road condition, and the first braking action is to fully brake from the first speed to a speed of 0; Controlling the target vehicle to continuously perform the first number of second braking actions under the second road condition, and the second braking action is to fully brake from the second speed to the second sub-speed, delay for the first duration, and then fully brake to a speed of 0; Controlling the target vehicle to continuously perform the second number of third braking actions under the third road condition, and the third braking action is hybrid braking; Controlling the target vehicle to continuously perform the third number of fourth braking actions under the fourth road condition, and the fourth braking action is to fully brake from the third speed to a speed of 0, then accelerate to the third speed, and fully brake to a speed of 0 after driving the first distance at the third speed; Controlling the target vehicle to continuously perform the fourth number of fifth braking actions under the fifth road condition, and the fifth braking action is a downhill parking action, and the downhill parking duration is the second duration; Controlling the target vehicle to continuously perform the fourth number of sixth braking actions under the sixth road condition, and the sixth braking action is an uphill parking action, and the uphill parking duration is the second duration; Control the target vehicle to continuously perform the seventh braking action for the fifth time under the seventh road condition, where the seventh braking action is hybrid braking from the fourth speed at the first frequency; A determination module, configured to determine the test result of the vehicle electronic braking system according to the data of the monitored preset parameters; Wherein, the preset working condition is determined based on the application scenario of the target vehicle, and the preset test specification is determined based on the application scenario of the target vehicle and / or the driving behavior habits of the driver when driving the target vehicle.

8. An electronic device, Characterized in that, The electronic device includes: A processor and a memory; The processor is configured to execute the steps of the road durability test method for the vehicle electronic braking system according to any one of claims 1 to 6 by calling the program or instruction stored in the memory.

9. A computer-readable storage medium, Characterized in that, The computer-readable storage medium stores a program or instruction, and the program or instruction causes a computer to execute the steps of the road durability test method for the vehicle electronic braking system according to any one of claims 1 to 6.

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