Distributed regulation and control method and system for durability test of programmable EBS system

Abstract

The invention discloses a programmable EBS system durability test distributed regulation and control method and system, and relates to the technical field of vehicle braking system tests.Variable test parameters are loaded to an electric cylinder and a central controller through an upper computer, diversified driving habits of a user can be accurately simulated, such as braking operations of different strengths and speeds, and the driving experience of the user is improved. And ABS intervention working conditions with different frequencies are adopted, so that the durability test condition is closer to an actual use scene. The upper computer interacts with the central controller in real time, automatically monitors the test process and accumulates the number of actions, and automatically switches the environment temperature when the conditions are met, so that the full-automatic durability test cycle is realized, the development and verification period is remarkably shortened, and the test efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle braking system testing, and particularly to a programmable EBS system durability test distributed control method and system. Background Art

[0002] With the rapid development of intelligent connected vehicles and the increasing perfection of regulations, commercial vehicles are gradually developing towards the intelligent direction, and the proportion of trucks with intelligent assisted driving and driverless features is increasing. At the same time, the domestic transportation industry has higher and higher requirements for the safety and comfort of commercial vehicles, and the electronic braking control system (EBS) has emerged as the times require.

[0003] As a key component of vehicle safety, the reliability and durability of the EBS system are directly related to driving safety. Therefore, it is particularly important to conduct a comprehensive durability test verification on the EBS system. The existing EBS system durability test schemes are usually relatively fixed and cannot flexibly simulate the complex braking habits of users during daily driving, such as braking operations with different forces and frequencies, and comprehensive working conditions at different ambient temperatures. This results in a longer development verification time for the durability test, and the test conditions are not sufficient enough to comprehensively cover the actual usage scenarios, thus possibly affecting the accurate evaluation of the long-term reliability of the EBS system. Summary of the Invention

[0004] To solve the technical problems existing in the background art, the present invention proposes a programmable EBS system durability test distributed control method and system.

[0005] A programmable EBS system durability test distributed control method proposed by the present invention includes the following steps: Step 1: Place the braking signal transmitter, front axle module, rear axle module, ABS solenoid valve, trailer module, and central controller in the待测 electronic braking control system in an environmental test chamber; connect the air supply port of the待测 electronic braking control system to an air compressor and an air storage tank; establish a communication connection between the central controller and a host computer through a bus; and mechanically connect the push rod of the braking signal transmitter to the telescopic end of an electric cylinder. Step 2: Load a first test parameter including the extension speed, extension displacement, and number of actions of the push rod to the electric cylinder through the host computer, and load a second test parameter including the number of electric braking times, the number of air braking times, the number of actions and action modes of the ABS solenoid valve to the central controller. Step 3: The electric cylinder drives the push rod according to the first test parameters to simulate the action of the brake pedal; the central controller responds to the action of the push rod and controls the brake signal transmitter, the front axle module, the rear axle module, the ABS solenoid valve and the trailer module to perform corresponding braking actions and ABS adjustment actions according to the second test parameters; Step 4: During the test, the central controller monitors the operating status of each module in the electronic braking control system under test in real time, accumulates the actual number of actions of each module, and sends the status information containing the actual number of actions to the host computer through the bus. Step 5: When the host computer determines that the number of actual actions received from the central controller has reached the target number of actions set for the current test stage, the host computer sends a first control command to the environmental test chamber to switch the internal temperature of the environmental test chamber to the next preset temperature value, and returns to step 3 until all durability test cycles at preset temperature values ​​are completed.

[0006] Preferably, in step two, the first test parameter and the second test parameter are generated based on the collected actual driving route information of the user, and the number of times the push rod is moved in the first test parameter corresponds to the number of times the electric control brake and the number of times the pneumatic control brake are moved in the second test parameter.

[0007] Preferably, in step three, the central controller controls the ABS solenoid valve to perform ABS adjustment actions according to the second test parameters. Specifically, the central controller controls the ABS solenoid valve to perform periodic pressurization, pressure holding, and pressure reduction operations when the air pressure output by the brake signal transmitter reaches the trigger condition, based on the operating mode of the ABS solenoid valve set in the second test parameters.

[0008] Preferably, in step four, the central controller accumulates the actual number of actions of each module, specifically including: the central controller accumulates the actual number of electrical control actions, the number of pneumatic control actions, and the actual number of pressurization, pressure holding, and pressure reduction actions of the ABS solenoid valve.

[0009] Preferably, in step five, the host computer determines that the actual number of actions has reached the target number of actions set for the current test phase. Specifically, the host computer compares the received actual number of actions with the target number of actions corresponding to the current test phase, which is pre-stored in the host computer. When the actual number of actions is greater than or equal to the target number of actions, it is determined that the switching condition is met.

[0010] Preferably, in step five, the host computer sends a first control command to the environmental test chamber to switch the internal temperature of the environmental test chamber to the next preset temperature value. Specifically, the host computer queries a pre-stored temperature cycle configuration file, obtains the next temperature value corresponding to the current test stage, and sends a command containing the next temperature value to the temperature controller of the environmental test chamber.

[0011] Preferably, the method further includes step six, test data recording: the host computer receives and stores the status information from the central controller in real time during the test, and generates a test report containing all the status information after completing all durability test cycles.

[0012] Preferably, the bus is a controller area network (MAN) bus.

[0013] Preferably, the environmental test chamber is a high and low temperature test chamber.

[0014] A distributed control system for endurance testing of a programmable EBS system, comprising: Durability testing environment construction module: The brake signal transmitter, front axle module, rear axle module, ABS solenoid valve, trailer module and central controller of the electronic braking control system under test are placed in an environmental test chamber; the air supply port of the electronic braking control system under test is connected to an air compressor and an air tank; the central controller is connected to the host computer via a bus; and the push rod of the brake signal transmitter is mechanically connected to the extension end of the electric cylinder. Test condition parameter loading module: The host computer loads first test parameters, including the extension speed, extension displacement and number of actions of the push rod, onto the electric cylinder, and loads second test parameters, including the number of electric control braking, the number of pneumatic control braking, and the number of actions and action mode of the ABS solenoid valve, onto the central controller. Distributed durability test execution module: The electric cylinder drives the push rod according to the first test parameters to simulate the action of the brake pedal; The central controller responds to the action of the push rod and controls the brake signal transmitter, the front axle module, the rear axle module, the ABS solenoid valve and the trailer module to perform corresponding braking actions and ABS adjustment actions according to the second test parameters; Real-time monitoring and status feedback module: During the test, the central controller monitors the operating status of each module in the electronic braking control system under test in real time, accumulates the actual number of actions of each module, and sends the status information containing the actual number of actions to the host computer through the bus; Judgment and Switching Test Module: When the host computer determines that the number of actual actions received from the central controller has reached the target number of actions set in the current test stage, the host computer sends a first control command to the environmental test chamber to switch the internal temperature of the environmental test chamber to the next preset temperature value, and returns to step three, until all durability test cycles under preset temperature values ​​are completed.

[0015] The distributed control method and system for endurance testing of programmable EBS systems proposed in this invention have the following beneficial technical effects: 1. By loading variable test parameters onto the electric cylinder and central controller via a host computer, diverse driving habits can be accurately simulated, such as braking operations with different force and speed, and ABS intervention conditions at different frequencies, making the durability test conditions closer to actual use scenarios. The host computer and central controller interact in real time, automatically monitoring the test progress and accumulating the number of actions. When conditions are met, the ambient temperature is automatically switched, realizing a fully automated durability test cycle, significantly shortening the development and verification cycle and improving testing efficiency.

[0016] 2. Combined with a high and low temperature test chamber, the EBS system can be subjected to durability tests at different ambient temperatures, verifying its reliability under extreme climatic conditions, making the verification conditions more sufficient and comprehensive. By separating the action execution (e.g., electric cylinders), core control (e.g., central controller), and monitoring and decision-making (e.g., host computer), a clear distributed control architecture is formed, resulting in a clear system structure that is easy to expand and maintain. Attached Figure Description

[0017] Figure 1 This is a flowchart of a distributed control method for endurance testing of a programmable EBS system according to the present invention; Figure 2 This is a schematic diagram of a distributed control system for endurance testing of a programmable EBS system according to the present invention. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] like Figure 1 The distributed control method for endurance testing of a programmable EBS system, as shown, includes the following steps: Step 1: Place the brake signal transmitter, front axle module, rear axle module, ABS solenoid valve, trailer module, and central controller of the electronic braking control system under test in an environmental test chamber; connect the air supply port of the electronic braking control system under test to an air compressor and an air tank; establish a communication connection between the central controller and the host computer via a bus; and mechanically connect the push rod of the brake signal transmitter to the telescopic end of the electric cylinder. Step 2: The host computer loads first test parameters, including the extension speed, extension displacement, and number of actions of the push rod, onto the electric cylinder, and loads second test parameters, including the number of electric braking actions, the number of pneumatic braking actions, and the number of actions and action modes of the ABS solenoid valve, onto the central controller. Step 3: The electric cylinder drives the push rod according to the first test parameters to simulate the action of the brake pedal; the central controller responds to the action of the push rod and controls the brake signal transmitter, the front axle module, the rear axle module, the ABS solenoid valve and the trailer module to perform corresponding braking actions and ABS adjustment actions according to the second test parameters; Step 4: During the test, the central controller monitors the operating status of each module in the electronic braking control system under test in real time, accumulates the actual number of actions of each module, and sends the status information containing the actual number of actions to the host computer through the bus. Step 5: When the host computer determines that the number of actual actions received from the central controller has reached the target number of actions set for the current test stage, the host computer sends a first control command to the environmental test chamber to switch the internal temperature of the environmental test chamber to the next preset temperature value, and returns to step 3 until all durability test cycles at preset temperature values ​​are completed.

[0020] In an optional embodiment, in step two, the first test parameter and the second test parameter are generated based on the collected actual driving route information of the user, and the number of push rod movements in the first test parameter corresponds to the number of electric control braking and the number of pneumatic control braking in the second test parameter.

[0021] In an optional embodiment, in step three, the central controller controls the ABS solenoid valve to perform ABS adjustment actions according to the second test parameters. Specifically, the central controller controls the ABS solenoid valve to perform periodic pressurization, pressure holding, and pressure reduction operations when the air pressure output by the brake signal transmitter reaches the trigger condition, based on the operating mode of the ABS solenoid valve set in the second test parameters.

[0022] In an optional embodiment, in step four, the central controller accumulates the actual number of actions of each module, specifically including: the central controller accumulates the actual number of electric control actions, the number of pneumatic control actions, and the actual number of pressurization, pressure holding, and pressure reduction actions of the ABS solenoid valve.

[0023] In an optional embodiment, in step five, the host computer determines that the actual number of actions has reached the target number of actions set for the current test phase. Specifically, the host computer compares the received actual number of actions with the target number of actions corresponding to the current test phase, which is pre-stored in the host computer. When the actual number of actions is greater than or equal to the target number of actions, it is determined that the switching condition is met.

[0024] In an optional embodiment, in step five, the host computer sends a first control command to the environmental test chamber to switch the internal temperature of the environmental test chamber to the next preset temperature value. Specifically, the host computer queries a pre-stored temperature cycle configuration file, obtains the next temperature value corresponding to the current test stage, and sends a command containing the next temperature value to the temperature controller of the environmental test chamber.

[0025] In an optional embodiment, the method further includes step six, test data recording: the host computer receives and stores the status information from the central controller in real time during the test, and generates a test report containing all the status information after completing all durability test cycles.

[0026] In an optional embodiment, the bus is a controller area network bus.

[0027] In an optional embodiment, the environmental test chamber is a high and low temperature test chamber.

[0028] By loading variable test parameters onto the electric cylinder and central controller via a host computer, diverse driving habits can be accurately simulated, such as braking operations with varying force and speed, and ABS intervention at different frequencies. This makes the durability test conditions closer to real-world usage scenarios. The host computer and central controller interact in real time, automatically monitoring the test progress and accumulating the number of actions. When conditions are met, the ambient temperature is automatically switched, achieving a fully automated durability test cycle. This significantly shortens the development and verification cycle and improves testing efficiency.

[0029] By combining high and low temperature test chambers, durability tests can be conducted on the EBS system under different ambient temperatures, verifying its reliability under extreme climatic conditions and making the verification conditions more sufficient and comprehensive. By separating the action execution (e.g., electric cylinders), core control (e.g., central controller), and monitoring and decision-making (e.g., host computer), a clear distributed control architecture is formed, resulting in a clear system structure that is easy to expand and maintain.

[0030] like Figure 2 The programmable EBS system endurance testing distributed control system shown includes: Durability testing environment construction module: The brake signal transmitter, front axle module, rear axle module, ABS solenoid valve, trailer module and central controller of the electronic braking control system under test are placed in an environmental test chamber; the air supply port of the electronic braking control system under test is connected to an air compressor and an air tank; the central controller is connected to the host computer via a bus; and the push rod of the brake signal transmitter is mechanically connected to the extension end of the electric cylinder. Test condition parameter loading module: The host computer loads first test parameters, including the extension speed, extension displacement and number of actions of the push rod, onto the electric cylinder, and loads second test parameters, including the number of electric control braking, the number of pneumatic control braking, and the number of actions and action mode of the ABS solenoid valve, onto the central controller. Distributed durability test execution module: The electric cylinder drives the push rod according to the first test parameters to simulate the action of the brake pedal; The central controller responds to the action of the push rod and controls the brake signal transmitter, the front axle module, the rear axle module, the ABS solenoid valve and the trailer module to perform corresponding braking actions and ABS adjustment actions according to the second test parameters; Real-time monitoring and status feedback module: During the test, the central controller monitors the operating status of each module in the electronic braking control system under test in real time, accumulates the actual number of actions of each module, and sends the status information containing the actual number of actions to the host computer through the bus; Judgment and Switching Test Module: When the host computer determines that the number of actual actions received from the central controller has reached the target number of actions set in the current test stage, the host computer sends a first control command to the environmental test chamber to switch the internal temperature of the environmental test chamber to the next preset temperature value, and returns to step three, until all durability test cycles under preset temperature values ​​are completed.

[0031] For clarification, "acquisition" in this application refers to obtaining the required content or data using existing technical means.

[0032] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0033] In the embodiments provided by this invention, it should be understood that the disclosed system or method can be implemented in other ways. For example, the embodiments of the invention described above are merely illustrative; for instance, the division of modules is only a logical functional division, and there may be other division methods in actual implementation.

[0034] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0035] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated module can be implemented in hardware or in the form of hardware plus software functional modules.

[0036] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the basic characteristics of the present invention.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A distributed control method for endurance testing of a programmable EBS system, characterized in that, Includes the following steps: Step 1: Place the brake signal transmitter, front axle module, rear axle module, ABS solenoid valve, trailer module, and central controller of the electronic braking control system under test in an environmental test chamber; connect the air supply port of the electronic braking control system under test to an air compressor and an air tank; establish a communication connection between the central controller and the host computer via a bus; and mechanically connect the push rod of the brake signal transmitter to the telescopic end of the electric cylinder. Step 2: The host computer loads first test parameters, including the extension speed, extension displacement, and number of actions of the push rod, onto the electric cylinder, and loads second test parameters, including the number of electric braking actions, the number of pneumatic braking actions, and the number of actions and action modes of the ABS solenoid valve, onto the central controller. Step 3: The electric cylinder drives the push rod according to the first test parameters to simulate the action of the brake pedal; the central controller responds to the action of the push rod and controls the brake signal transmitter, the front axle module, the rear axle module, the ABS solenoid valve and the trailer module to perform corresponding braking actions and ABS adjustment actions according to the second test parameters; Step 4: During the test, the central controller monitors the operating status of each module in the electronic braking control system under test in real time, accumulates the actual number of actions of each module, and sends the status information containing the actual number of actions to the host computer through the bus. Step 5: When the host computer determines that the number of actual actions received from the central controller has reached the target number of actions set for the current test stage, the host computer sends a first control command to the environmental test chamber to switch the internal temperature of the environmental test chamber to the next preset temperature value, and returns to step 3 until all durability test cycles at preset temperature values ​​are completed.

2. The distributed control method for endurance testing of a programmable EBS system according to claim 1, characterized in that, In step two, the first test parameter and the second test parameter are generated based on the collected actual driving route information of the user. The number of times the push rod is moved in the first test parameter corresponds to the number of times the electric control brake and the number of times the pneumatic control brake are moved in the second test parameter.

3. The distributed control method for endurance testing of a programmable EBS system according to claim 1, characterized in that, In step three, the central controller controls the ABS solenoid valve to perform ABS adjustment actions according to the second test parameters. Specifically, the central controller controls the ABS solenoid valve to perform periodic pressurization, pressure holding, and pressure reduction operations when the air pressure output by the brake signal transmitter reaches the trigger condition, based on the operating mode of the ABS solenoid valve set in the second test parameters.

4. The distributed control method for endurance testing of a programmable EBS system according to claim 1, characterized in that, In step four, the central controller accumulates the actual number of actions of each module, specifically including: the central controller accumulates the actual number of electric control actions, the number of pneumatic control actions, and the actual number of pressurization, pressure holding, and pressure reduction actions of the ABS solenoid valve.

5. The distributed control method for endurance testing of a programmable EBS system according to claim 1, characterized in that, In step five, the host computer determines that the actual number of actions has reached the target number of actions set for the current test phase. Specifically, the host computer compares the received actual number of actions with the target number of actions corresponding to the current test phase, which is pre-stored in the host computer. When the actual number of actions is greater than or equal to the target number of actions, it is determined that the switching condition is met.

6. The distributed control method for endurance testing of a programmable EBS system according to claim 1, characterized in that, In step five, the host computer sends a first control command to the environmental test chamber to switch the internal temperature of the environmental test chamber to the next preset temperature value. Specifically, the host computer queries a pre-stored temperature cycle configuration file, obtains the next temperature value corresponding to the current test stage, and sends an instruction containing the next temperature value to the temperature controller of the environmental test chamber.

7. The distributed control method for endurance testing of a programmable EBS system according to claim 1, characterized in that, The method further includes step six, test data recording: the host computer receives and stores the status information from the central controller in real time during the test, and generates a test report containing all the status information after completing all durability test cycles.

8. The distributed control method for endurance testing of a programmable EBS system according to claim 1, characterized in that, The bus is a controller area network bus.

9. The distributed control method for endurance testing of a programmable EBS system according to claim 1, characterized in that, The environmental test chamber is a high and low temperature test chamber.

10. A distributed control system for endurance testing of a programmable EBS system, used with the distributed control method for endurance testing of a programmable EBS system as described in any one of claims 1 to 9, characterized in that, include: Durability testing environment construction module: The brake signal transmitter, front axle module, rear axle module, ABS solenoid valve, trailer module and central controller of the electronic braking control system under test are placed in an environmental test chamber; the air supply port of the electronic braking control system under test is connected to an air compressor and an air tank; the central controller is connected to the host computer via a bus; and the push rod of the brake signal transmitter is mechanically connected to the extension end of the electric cylinder. Test condition parameter loading module: The host computer loads first test parameters, including the extension speed, extension displacement and number of actions of the push rod, onto the electric cylinder, and loads second test parameters, including the number of electric control braking, the number of pneumatic control braking, and the number of actions and action mode of the ABS solenoid valve, onto the central controller. Distributed durability test execution module: The electric cylinder drives the push rod according to the first test parameters to simulate the action of the brake pedal; The central controller responds to the action of the push rod and controls the brake signal transmitter, the front axle module, the rear axle module, the ABS solenoid valve and the trailer module to perform corresponding braking actions and ABS adjustment actions according to the second test parameters; Real-time monitoring and status feedback module: During the test, the central controller monitors the operating status of each module in the electronic braking control system under test in real time, accumulates the actual number of actions of each module, and sends the status information containing the actual number of actions to the host computer through the bus; Judgment and Switching Test Module: When the host computer determines that the number of actual actions received from the central controller has reached the target number of actions set in the current test stage, the host computer sends a first control command to the environmental test chamber to switch the internal temperature of the environmental test chamber to the next preset temperature value, and returns to step three, until all durability test cycles under preset temperature values ​​are completed.

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