Vehicle brake air pressure warning method, device, equipment and storage medium

Abstract

The present invention discloses a vehicle brake pressure warning method, device, equipment, and storage medium, wherein the method includes the following steps: determining whether the vehicle's current operating pressure is greater than a set pressure; if so, outputting the actual driving warning pressure based on the current vehicle load signal and a calibrated load-pressure map; fitting a curve of theoretical pressure and actual pressure after leakage based on the circuit pressure before and after driving, and calculating the vehicle brake pressure warning value using the curve and the actual driving warning pressure to issue a warning. The present application can adaptively calibrate warning values ​​according to different operating conditions, effectively reminding the user of the current brake pressure, supporting driving deceleration requirements, and reducing the risk of false alarms.

Description

Technical Field

[0001] The present invention relates to the field of vehicle brake safety technology, and in particular to a vehicle brake air pressure early warning method, device, equipment and storage medium. Background Art

[0002] According to GB12676, the Type 0 test for engine disengagement of M / N vehicles requires an average deceleration of at least 5 m / s^2. Combined with functional safety analysis, if the average deceleration of the vehicle's driving air pressure support does not meet the requirement of greater than or equal to 5 m / s^2, the driver should be notified through the instrument panel, which can effectively improve vehicle braking safety.

[0003] The current fixed air pressure warning thresholds used by domestic OEMs for vehicles may not be able to meet the requirements for deceleration greater than or equal to 5m / s² under different vehicle operating conditions. For example, when the vehicle is unloaded, a lower air pressure can meet the requirement, while a fully loaded vehicle requires a higher air pressure, which can differ by 2 to 3 times. The existing technology, however, suffers from the problem that using fixed values ​​for warnings may not effectively alert users under certain operating conditions if the brake pressure currently cannot support the required deceleration, potentially compromising vehicle safety and leading to rear-end collisions or crashes.

[0004] Therefore, how to adaptively calibrate warning values ​​according to different working conditions to effectively remind users of the current brake air pressure and support driving deceleration requirements is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The main purpose of the present invention is to provide a vehicle brake air pressure warning method, device, equipment and storage medium, which can adaptively calibrate warning values ​​according to different working conditions, effectively remind users of the current brake air pressure, support driving deceleration requirements, and reduce the risk of false alarms.

[0006] In a first aspect, the present application provides a vehicle brake air pressure warning method, wherein the method comprises the steps of:

[0007] Determine whether the vehicle's current driving condition air pressure is greater than the set air pressure;

[0008] If so, the actual driving warning air pressure is output based on the current vehicle load signal and the calibrated load-air pressure MAP;

[0009] Based on the circuit air pressure before and after driving, a curve of theoretical pressure and actual pressure after leakage is fitted, and the vehicle brake air pressure warning value is calculated through the curve and the actual driving warning air pressure to provide warning.

[0010] In combination with the first aspect above, as an optional implementation, it is determined whether the output brake air pressure warning value is less than a maximum value of a preset range;

[0011] If so, identifying the status of the gas-consuming equipment of the vehicle and determining the gas consumption of the gas-consuming equipment;

[0012] Adding the air consumption of the air-consuming equipment to the vehicle brake air pressure warning value to obtain a final air pressure warning calibration value, wherein the air-consuming equipment includes: air suspension, gearbox, solenoid valve, retarder, air horn, vehicle aftertreatment, cab suspension and seat;

[0013] If not, the intelligent cockpit controller will be used to prompt the vehicle to load abnormally and check the cargo status.

[0014] In combination with the first aspect above, as an optional implementation, if the final air pressure warning calibration value is greater than or equal to the maximum value, the intelligent cockpit controller is used to prompt the vehicle load abnormality to check the cargo status;

[0015] If the final air pressure warning calibration value is less than the maximum value, the MCU is used to record the final air pressure warning calibration value at this time, and the air pressure value of the smart cockpit controller is updated to the final air pressure warning calibration value.

[0016] In combination with the first aspect above, as an optional implementation method, if the final air pressure warning calibration value is less than the minimum value of the preset interval, the minimum value is used as the vehicle's current brake air pressure warning value and output.

[0017] In conjunction with the first aspect above, as an optional implementation, when the vehicle's static time reaches a set time, the time series of the vehicle's circuit air pressure before and after driving are recorded via CAN signals to fit a curve between the theoretical pressure and the actual pressure after the leak;

[0018] The actual driving warning air pressure is substituted into the curve to calculate the vehicle brake air pressure warning value.

[0019] In combination with the first aspect above, as an optional implementation method, establish a vehicle configuration and environmental parameter Dataset working condition for different vehicles, and drive the host computer to perform HIL testing through cloud services to output the vehicle's load-vehicle driving air pressure MAP diagram;

[0020] The MCU is used to obtain the CVW load signal through the CAN bus, and the actual driving warning air pressure is determined from the MAP diagram by looking up the table and output.

[0021] In conjunction with the first aspect above, as an optional implementation method, the EBS is used to broadcast the vehicle's load signal during driving, and the vehicle MCU is used to make a judgment based on the current driving air pressure signal from the body domain controller;

[0022] If it is determined that the vehicle's current driving operating air pressure is lower than the threshold, the MCU outputs the driving alarm air pressure calibration value to the smart cockpit controller, and the smart cockpit controller is used to prompt that the vehicle's air pressure is too low.

[0023] In a second aspect, the present application provides a vehicle brake air pressure warning device, which includes:

[0024] A judgment module is used to judge whether the vehicle's current driving condition air pressure is greater than a set air pressure;

[0025] an output module for outputting the actual driving warning air pressure based on the current vehicle load signal and a calibrated load-air pressure MAP diagram;

[0026] The processing module is used to fit the curve of theoretical pressure and actual pressure after leakage based on the circuit air pressure before and after driving, and calculate the vehicle brake air pressure warning value through the curve and the actual driving warning air pressure to provide warning.

[0027] In a third aspect, the present application further provides an electronic device comprising: a processor; and a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method described in any one of the first aspects is implemented.

[0028] In a fourth aspect, the present application further provides a computer-readable storage medium storing computer program instructions, which, when executed by a computer, enables the computer to execute any one of the methods described in the first aspect.

[0029] The present application provides a vehicle brake air pressure warning method, device, equipment, and storage medium, wherein the method includes the following steps: determining whether the vehicle's current driving operating pressure is greater than a set pressure; if so, outputting the actual driving warning pressure based on the current vehicle load signal and a calibrated load-air pressure MAP; fitting a curve of theoretical pressure and actual pressure after leakage based on the circuit pressure before and after driving, and calculating the vehicle brake air pressure warning value using the curve and the actual driving warning pressure to issue a warning. The present application can adaptively calibrate warning values ​​according to different operating conditions, effectively reminding the user of the current brake pressure, supporting driving deceleration requirements, and reducing the risk of false alarms.

[0030] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0032] Figure 1 This is a flow chart of a vehicle brake air pressure warning method provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of a vehicle brake air pressure warning device provided in an embodiment of the present application;

[0034] Figure 3 This is a schematic diagram of the brake air pressure warning provided in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0036] Figure 5 A schematic diagram of a computer-readable program medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0038] Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. Some of the blocks shown in the drawings are functional entities that do not necessarily correspond to physically or logically separate entities.

[0039] The embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0040] Reference Figure 1 , Figure 1 The figure shows a flow chart of a vehicle brake air pressure warning method provided by the present invention, as shown in FIG. Figure 1 As shown, the method includes the steps of:

[0041] Step S101: Determine whether the vehicle's current driving operating pressure is greater than the set pressure.

[0042] Specifically, the EBS is used to broadcast the vehicle's load signal during driving, and the vehicle MCU is used to make a judgment based on the current driving air pressure signal from the body domain controller;

[0043] If it is determined that the vehicle's current driving operating air pressure is lower than the threshold, the MCU outputs the driving alarm air pressure calibration value to the smart cockpit controller, and the smart cockpit controller is used to prompt that the vehicle's air pressure is too low.

[0044] Step S102: If yes, then based on the current vehicle load signal and the calibrated load-air pressure MAP diagram, the actual driving warning air pressure is output.

[0045] Specifically, a dataset of vehicle configurations (wheelbase, engine drive type, axle load, maximum torque provided by the engine, tire radius, etc.) and environmental parameters of different vehicles is established, and the host computer is driven by cloud services to perform HIL testing to output the vehicle's load-vehicle driving pressure MAP diagram; the MCU is used to obtain the CVW load signal through the CAN bus, and the actual driving warning pressure is determined from the MAP diagram by looking up the table and output.

[0046] For the convenience of understanding the specific instructions, when the vehicle is driving, the EBS controller broadcasts the load signal through CAN, and the MCU judges based on the driving air pressure signal of the current body domain controller. If the driving air pressure is less than or equal to 5.9 bar, the MCU outputs the driving alarm air pressure calibration value to the smart cockpit controller. The smart cockpit controller prompts that the vehicle air pressure is too low. When it is greater than 5.9 bar, the MCU outputs the driving alarm air pressure calibration value P1 according to the load signal and the MAP diagram of the theoretical value of the minimum brake air pressure required for the braking deceleration to reach -5m / s^2. If P1 is greater than or equal to 12 bar, the smart cockpit controller prompts that the vehicle load is abnormal and please check the cargo status; if it is less than 12 bar, the MCU records the P1 value at this time.

[0047] That is, by establishing a dataset of different vehicles, the cloud service can be used to drive the host computer to set the vehicle model in the early stage of design, conduct HIL testing, and output a high-precision load-vehicle driving pressure MAP.

[0048] Step S103: Based on the circuit air pressure before and after driving, a curve of theoretical pressure and actual pressure after leakage is fitted, and the vehicle brake air pressure warning value is calculated through the curve and the actual driving warning air pressure to provide a warning.

[0049] Specifically, when the vehicle's static time reaches the set time, the time series of the vehicle's pre-driving circuit air pressure and post-driving circuit air pressure are recorded through the CAN signal to fit the theoretical pressure and the actual pressure curve after leakage; the actual driving warning air pressure is substituted into the curve to calculate the vehicle's brake air pressure warning value.

[0050] For easier understanding, consider the fact that air pressure leakage in actual vehicles varies due to factors such as assembly layout. Parameter identification is performed on the entire vehicle while the vehicle is stationary. Over a period of time, the CAN signals are recorded and output, representing the time series Pf1...Pf1n and Pr...Prn of the front-circuit air pressure (Pf) and rear-circuit air pressure (Pr) in AIR1. The parameter identification module then fits the curve representing the theoretical pressure (Pth) against the actual pressure (Pact) after a leak. P1 is substituted into the fitted curve to output the maximum theoretical pressure (P2) between the front and rear circuits (the vehicle's brake pressure warning value). If P2 is greater than or equal to 12 bar, the intelligent cockpit controller prompts the user to check the cargo load. If P2 is less than 12 bar, the MCU records the current P2 value. The MCU then fits the curve representing the theoretical pressure (Pth) against the actual pressure (Pact) after a leak, yielding the second preset value (P2) for the driving warning air pressure.

[0051] After outputting the vehicle brake pressure warning value, it also includes:

[0052] Determining whether the output brake air pressure warning value is less than a maximum value of a preset range;

[0053] If so, the status of the vehicle's gas-consuming equipment is identified and the gas consumption of the gas-consuming equipment is determined; the gas consumption of the gas-consuming equipment is added to the vehicle's brake air pressure warning value to obtain the final air pressure warning calibration value, wherein the gas-consuming equipment includes: air suspension, gearbox, solenoid valve, retarder, air horn, vehicle after-treatment, cab suspension and seat; if not, the intelligent cockpit controller is used to prompt the vehicle load abnormality to check the cargo status.

[0054] If the final air pressure warning calibration value is greater than or equal to the maximum value, the smart cockpit controller is used to prompt the vehicle load abnormality to check the cargo status; if the final air pressure warning calibration value is less than the maximum value, the MCU is used to record the final air pressure warning calibration value at this time, and the air pressure value of the smart cockpit controller is updated to the final air pressure warning calibration value.

[0055] If the final air pressure warning calibration value is less than the minimum value of the preset interval, the minimum value is used as the current brake air pressure warning value of the vehicle and is output.

[0056] It is understandable that when the retarder, air horn, gearbox, etc. are turned on during driving, the operating status of the very gas-consuming equipment is sent through the relevant controller, and the gas consumption calibration value of its components is added to P2 to obtain the final air pressure calibration value P3. If P3 is greater than or equal to 12 bar, the smart cockpit controller prompts that the vehicle load is abnormal and please check the cargo status; if it is less than 12 bar, the MCU records the P3 value at this time and updates the low air pressure alarm value of the smart cockpit controller to P3.

[0057] It needs to be explained that P1 can be understood as the output of the actual driving warning air pressure, P2 can be understood as the vehicle brake air pressure warning value, and P3 can be understood as the final air pressure warning calibration value.

[0058] Reference Figure 2 , Figure 2 FIG. 1 is a schematic diagram of a vehicle brake air pressure warning device provided by the present invention, as shown in FIG. Figure 2 As shown, the device includes:

[0059] The judgment module 201 is used to judge whether the vehicle's current driving condition air pressure is greater than the set air pressure.

[0060] Output module 202: If yes, then output the actual driving warning air pressure based on the current vehicle load signal and the calibrated load-air pressure MAP diagram.

[0061] Processing module 203: It is used to fit the curve of theoretical pressure and actual pressure after leakage based on the circuit air pressure before and after driving, and calculate the vehicle brake air pressure warning value through the curve and the actual driving warning air pressure to issue a warning.

[0062] Furthermore, in a possible implementation manner, the processing module is further configured to determine whether the outputted brake air pressure warning value is less than a maximum value of a preset range;

[0063] If so, identifying the status of the gas-consuming equipment of the vehicle and determining the gas consumption of the gas-consuming equipment;

[0064] Adding the air consumption of the air-consuming equipment to the vehicle brake air pressure warning value to obtain a final air pressure warning calibration value, wherein the air-consuming equipment includes: air suspension, gearbox, solenoid valve, retarder, air horn, vehicle aftertreatment, cab suspension and seat;

[0065] If not, the intelligent cockpit controller will be used to prompt the vehicle to load abnormally and check the cargo status.

[0066] Furthermore, in a possible implementation, the processing module is further configured to, if the final air pressure warning calibration value is greater than or equal to the maximum value, use the intelligent cockpit controller to prompt the vehicle to check the cargo status due to abnormal load;

[0067] If the final air pressure warning calibration value is less than the maximum value, the MCU is used to record the final air pressure warning calibration value at this time, and the air pressure value of the smart cockpit controller is updated to the final air pressure warning calibration value.

[0068] Furthermore, in a possible implementation manner, the processing module is further configured to, if the final air pressure warning calibration value is less than a minimum value of a preset interval, use the minimum value as the current brake air pressure warning value of the vehicle and output it.

[0069] Furthermore, in one possible embodiment, the processing module is further configured to record the time series of the vehicle's circuit air pressure before and after driving via CAN signals when the vehicle's static time reaches a set time, so as to obtain a curve of theoretical pressure and actual pressure after leakage by fitting;

[0070] The actual driving warning air pressure is substituted into the curve to calculate the vehicle brake air pressure warning value.

[0071] Furthermore, in a possible implementation, the output module is further used to establish vehicle configuration and environmental parameter Dataset conditions for different vehicles, and drive the host computer to perform HIL testing through cloud services to output the vehicle's load-vehicle driving air pressure MAP diagram;

[0072] The MCU is used to obtain the CVW load signal through the CAN bus, and the actual driving warning air pressure is determined from the MAP diagram by looking up the table and output.

[0073] Furthermore, in a possible implementation, the judgment module is further configured to broadcast a load signal during vehicle travel using the EBS, and to make a judgment using the vehicle MCU in combination with a current vehicle pressure signal from the vehicle body domain controller;

[0074] If it is determined that the vehicle's current driving operating air pressure is lower than the threshold, the MCU outputs the driving alarm air pressure calibration value to the smart cockpit controller, and the smart cockpit controller is used to prompt that the vehicle's air pressure is too low.

[0075] Reference Figure 3 , Figure 3 The figure shows a schematic diagram of the brake air pressure warning provided by the present invention, as shown in FIG. Figure 3 As shown:

[0076] Specifically, by establishing a dataset of vehicle configurations and environmental parameters for different vehicles, the cloud service is used to drive the host computer to perform HIL testing. The full braking stroke produces an average deceleration of 5m / s^2, and a MAP diagram of the vehicle's load and minimum driving air pressure is output.

[0077] The MCU outputs the first preset threshold value P1 of the vehicle driving air pressure through the MAP map in step 1 of the CVW load signal mapping of the actual vehicle CAN bus.

[0078] The MCU monitors the AIR1 signal in the static state of the actual vehicle, records a time series, and performs fitting to obtain the fitting curve of the theoretical pressure P theoretical - the actual pressure after leakage P actual to obtain the second preset value P2 of the driving alarm air pressure.

[0079] Because the vehicle consumes different amounts of gas when configured with different gas volumes, P2 needs to be added with the gas consumption of the gas-consuming equipment (very consuming gas source) to obtain the third preset value P3∈[5.9,12]. When it exceeds the upper limit, it means that the vehicle's load exceeds the design mass of the vehicle, reminding the driver that the vehicle load is abnormal and to check the cargo status. When it exceeds the lower limit, it is more appropriate to park by overcoming the brake spring.

[0080] Determine whether P3 is in the preset range ([5.9, 12]). If P3 is less than the lower limit, that is, less than 5.9, the minimum value (that is, 5.9) is used as the vehicle's current brake air pressure warning value and output.

[0081] If P3 is determined to be within the preset range, the calculated P3 value is directly output. If P3 is determined to be greater than or equal to the upper limit, the intelligent cockpit controller is used to prompt the vehicle to load abnormally and check the cargo status.

[0082] If the final air pressure warning calibration value is less than the maximum value, the MCU is used to record the final air pressure warning calibration value at this time, and the air pressure value of the smart cockpit controller is updated to the final air pressure warning calibration value.

[0083] The specific embodiments are as follows:

[0084] When the vehicle is driving, the EBS controller broadcasts the load signal through CAN. The MCU combines the driving air pressure signal of the current body domain controller to make a judgment. If the driving air pressure is less than or equal to 5.9 bar, the MCU outputs the driving alarm air pressure calibration value to the smart cockpit controller. The smart cockpit controller prompts that the vehicle air pressure is too low. When it is greater than 5.9 bar, the MCU outputs the driving alarm air pressure calibration value P1 based on the load signal and the MAP diagram of the theoretical value of the minimum brake air pressure required for the braking deceleration to reach -5m / s^2. If P1 is greater than or equal to 12 bar, the smart cockpit controller prompts that the vehicle load is abnormal and please check the cargo status; if it is less than 12 bar, the MCU records the current P1 value.

[0085] Considering that the actual vehicle's air pressure leakage may vary due to factors such as assembly layout, parameter identification of the vehicle's air pressure leakage is performed when the vehicle is static. Over a period of time, the CAN signal is used to record and output the relevant time series Pf1...Pf1n and Pr...Prn of the vehicle's AIR1 front circuit air pressure Pf and the rear circuit air pressure Pr. The parameter identification module is used to fit a fitting curve of theoretical pressure P theoretical - actual pressure after leakage P actual. P1 is substituted into the fitting curve to output the maximum theoretical pressure P2 of the front and rear circuit air pressures. If P2 is greater than or equal to 12 bar, the intelligent cockpit controller prompts that the vehicle load is abnormal and asks you to check the cargo status. If it is less than 12 bar, the MCU records the current P2 value.

[0086] When the retarder, air horn, transmission, etc. are turned on during driving, the operating status of the very gas-consuming equipment is sent through the relevant controller. The gas consumption calibration values ​​of their components are added to P2 to obtain the final air pressure calibration value P3. If P3 is greater than or equal to 12 bar, the smart cockpit controller prompts that the vehicle load is abnormal and asks you to check the cargo status; if it is less than 12 bar, the MCU records the current P3 value and updates the smart cockpit controller's low air pressure alarm value to P3.

[0087] In summary, this application is applicable to different vehicle configurations, and the vehicle strategy can be adaptively calibrated based on operating conditions, reducing vehicle testing costs. By establishing different preset values, vehicle operating conditions can be classified, while the diagnostic logic of the warning values ​​reduces the risk of false alarms. Identifying compressed air leakage in steady-state vehicle conditions provides a key parameter for the vehicle's braking system status, improving vehicle safety.

[0088] Refer to the following Figure 4 An electronic device 400 according to this embodiment of the present invention will be described. Figure 4 The electronic device 400 shown is merely an example and should not limit the functions and scope of use of the embodiments of the present invention.

[0089] like Figure 4 As shown, electronic device 400 is implemented as a general-purpose computing device. Components of electronic device 400 may include, but are not limited to, at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting various system components (including storage unit 420 and processing unit 410).

[0090] The storage unit stores program codes, which can be executed by the processing unit 410, so that the processing unit 410 performs the steps according to various exemplary embodiments of the present invention described in the above “Example Method” section of this specification.

[0091] The storage unit 420 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 421 and / or a cache memory unit 422 , and may further include a read-only memory unit (ROM) 423 .

[0092] The storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0093] Bus 430 may represent one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0094] The electronic device 400 may also communicate with one or more external devices (e.g., a keyboard, a pointing device, a Bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 400, and / or any device that enables the electronic device 400 to communicate with one or more other computing devices (e.g., a router, a modem, etc.). Such communication may occur via an input / output (I / O) interface 450. Furthermore, the electronic device 400 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) via a network adapter 460. As shown, the network adapter 460 communicates with other modules of the electronic device 400 via a bus 430. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 400, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0095] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

[0096] According to the solution of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above-mentioned method of this specification is stored. In some possible implementations, various aspects of the present invention may also be implemented in the form of a program product, which includes program code. When the program product is executed on a terminal device, the program code is used to cause the terminal device to perform the steps according to various exemplary embodiments of the present invention described in the "Exemplary Methods" section of this specification.

[0097] refer to Figure 5 , a program product 500 for implementing the above-described method according to an embodiment of the present invention is described. The program product 500 may be a portable compact disc read-only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0098] The program product may be implemented in 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 be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection with 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 thereof.

[0099] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0100] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0101] The program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, and the like, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, 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. In cases involving a remote computing device, the remote computing device may be connected to the user computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0102] Furthermore, the above-described figures are merely illustrative of the processes included in the method according to exemplary embodiments of the present invention and are not intended to be limiting. It is readily understood that the processes illustrated in the above-described figures do not indicate or limit the temporal order of these processes. Furthermore, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0103] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

[0104] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

Claims

1. A vehicle brake air pressure warning method, characterized in that: include: Determine whether the vehicle's current driving condition air pressure is greater than the set air pressure; If so, the actual driving warning air pressure is output based on the current vehicle load signal and the calibrated load-air pressure MAP; Based on the circuit air pressure before and after driving, a curve of theoretical pressure and actual pressure after leakage is fitted, and the vehicle brake air pressure warning value is calculated based on the curve and the actual driving warning air pressure to provide warning; Among them, the vehicle configuration and environmental parameter Dataset working conditions of different vehicles are established, and the host computer is driven to perform HIL testing through cloud services to output the vehicle load-vehicle driving air pressure MAP diagram; Utilize the MCU to obtain the CVW load signal through the CAN bus, determine the actual driving warning air pressure from the MAP diagram by looking up the table, and output it; When the vehicle's static time reaches the set time, the time series of the vehicle's circuit air pressure before and after driving are recorded through the CAN signal to fit the theoretical pressure and the actual pressure curve after leakage; The actual driving warning air pressure is substituted into the curve to calculate the vehicle brake air pressure warning value.

2. The method according to claim 1, characterized in that After outputting the vehicle brake air pressure warning value, the method further includes: Determining whether the output brake air pressure warning value is less than a maximum value of a preset range; If so, identifying the status of the gas-consuming equipment of the vehicle and determining the gas consumption of the gas-consuming equipment; Adding the air consumption of the air-consuming equipment to the vehicle brake air pressure warning value to obtain a final air pressure warning calibration value, wherein the air-consuming equipment includes: air suspension, gearbox, solenoid valve, retarder, air horn, vehicle aftertreatment, cab suspension and seat; If not, the intelligent cockpit controller will be used to prompt the vehicle to load abnormally and check the cargo status.

3. The method according to claim 2, characterized in that Also includes: If the final air pressure warning calibration value is greater than or equal to the maximum value, the intelligent cockpit controller is used to prompt the vehicle to check the cargo status due to abnormal load; If the final air pressure warning calibration value is less than the maximum value, the MCU is used to record the final air pressure warning calibration value at this time, and the air pressure value of the smart cockpit controller is updated to the final air pressure warning calibration value.

4. The method according to claim 3, characterized in that Also includes: If the final air pressure warning calibration value is less than the minimum value of the preset interval, the minimum value is used as the current brake air pressure warning value of the vehicle and is output.

5. The method according to claim 1, wherein Also includes: Use EBS to broadcast the vehicle's load signal during driving, and use the vehicle MCU to combine the current vehicle pressure signal from the body domain controller for judgment; If it is determined that the vehicle's current driving operating air pressure is lower than the threshold, the MCU outputs the driving alarm air pressure calibration value to the smart cockpit controller, and the smart cockpit controller is used to prompt that the vehicle's air pressure is too low.

6. A vehicle brake air pressure warning device, characterized in that: include: A judgment module is used to judge whether the vehicle's current driving condition air pressure is greater than a set air pressure; an output module for outputting the actual driving warning air pressure based on the current vehicle load signal and a calibrated load-air pressure MAP diagram; A processing module is used to fit a curve of theoretical pressure and actual pressure after leakage based on the circuit air pressure before and after driving, and calculate the vehicle brake air pressure warning value based on the curve and the actual driving warning air pressure to provide warning; The output module is also used to establish vehicle configuration and environmental parameter Dataset conditions for different vehicles, and drive the host computer to perform HIL testing through cloud services to output the vehicle's load-vehicle driving air pressure MAP diagram; Utilize the MCU to obtain the CVW load signal through the CAN bus, determine the actual driving warning air pressure from the MAP diagram by looking up the table, and output it; The processing module is further configured to record the time series of the vehicle's circuit air pressure before and after driving through CAN signals when the vehicle's static time reaches a set time, so as to obtain a curve of theoretical pressure and actual pressure after leakage by fitting; The actual driving warning air pressure is substituted into the curve to calculate the vehicle brake air pressure warning value.

7. An electronic device, characterized in that: The electronic device comprises: processor; A memory having computer-readable instructions stored thereon, wherein when the computer-readable instructions are executed by the processor, the method according to any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium, characterized in that The computer program instructions are stored therein, and when the computer program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 5.

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