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

Abstract

The invention discloses a vehicle braking air pressure early warning method, device and equipment and a storage medium. The method comprises the steps that whether the current driving working condition air pressure of a vehicle is larger than the set air pressure or not is judged; if yes, the actual driving early warning air pressure is output based on the current vehicle load signal and the calibrated load-air pressure MAP; and based on the loop air pressure before and after driving, fitting to obtain a curve of theoretical pressure and actual pressure after leakage, and calculating a vehicle brake air pressure early warning value through the curve and the actual driving early warning air pressure so as to perform early warning. Different self-adaptive calibration early warning values can be carried out according to working conditions, a user is effectively reminded of the braking air pressure at the current stage, the driving deceleration requirement is met, and the risk of misinformation is reduced.

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

[0003] The current vehicle driving air pressure alarm threshold of domestic OEMs uses a fixed value, which may not meet the requirements of whether different vehicle working conditions can support a deceleration greater than or equal to 5m / s^2. For example, when the vehicle is unloaded, less driving air pressure can meet the requirements, but when fully loaded, more driving air pressure is required than when the vehicle is unloaded, and the air pressure of the two can differ by 2 to 3 times. The problem with the existing technology is that the use of fixed values ​​for early warning cannot effectively remind users that the current brake air pressure cannot support the driving deceleration requirements under certain working conditions, which may reduce the safety of the vehicle during driving and cause rear-end collisions or collisions.

[0004] Therefore, how to adaptively calibrate warning values ​​according to different working conditions to effectively remind users of the current brake 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 pressure warning method, device, equipment and storage medium, which can perform different adaptive calibration warning values ​​according to working conditions, effectively remind users of the current brake 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 yes, then 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 interval;

[0011] If so, identifying the state 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 post-processing, cab suspension and seat;

[0013] If not, the intelligent cockpit controller is used to prompt the vehicle load abnormality 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 current brake air pressure warning value of the vehicle and is output.

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

[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 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;

[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 outputted.

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

[0022] If it is determined that the vehicle's current driving condition air pressure is less 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, the device comprising:

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

[0025] An output module, which is used to output the actual driving warning air pressure based on the current vehicle load signal and the 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 issue a warning.

[0027] In a third aspect, the present application further provides an electronic device, comprising: a processor; 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 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 steps of: determining whether the vehicle's current driving operating pressure is greater than the set pressure; if so, outputting the actual driving warning pressure based on the current vehicle load signal and the calibrated load-air pressure MAP diagram; fitting a curve of the theoretical pressure and the actual pressure after leakage based on the circuit pressure before and after driving, and calculating the vehicle brake air pressure warning value through the curve and the actual driving warning pressure for warning. The present application can perform different adaptive calibration warning values ​​according to the working conditions, effectively remind the user of the current brake air pressure, support the driving deceleration requirements, and reduce the risk of false alarms.

[0030] It is to 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 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 A schematic diagram of 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] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

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

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

[0040] Reference Figure 1 , Figure 1 FIG. 1 is 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 comprises the steps of:

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

[0042] Specifically, the EBS is used to broadcast the load signal of the vehicle during driving, and the vehicle MCU is used to make a judgment in combination with the driving air pressure signal of the current body domain controller;

[0043] If it is determined that the vehicle's current driving condition air pressure is less 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, the vehicle configuration (wheelbase, engine drive type, axle load, maximum torque provided by the engine, tire radius, etc.) and environmental parameter Dataset conditions of different vehicles are 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 datasets of different vehicles, the cloud service can be used to drive the host computer to set up the vehicle model in the early stage of design, conduct HIL testing, and output a high-precision MAP diagram of load-vehicle driving pressure.

[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 issue 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 easy understanding, an example is given. Considering that the air pressure leakage of the actual vehicle will be different due to factors such as assembly layout, the air pressure leakage of the entire vehicle is identified when the vehicle is static. The relevant time series Pf1...Pf1n and Pr...Prn of the air pressure of the front circuit Pf and the rear circuit Pr in the vehicle's AIR1 are recorded and output through the CAN signal for a period of time. The parameter identification module is used to fit the fitting curve of the theoretical pressure P theory-actual pressure P reality after leakage. P1 is substituted into the fitting curve to output the maximum theoretical pressure P2 (vehicle brake air pressure warning value) in the front and rear circuit air pressure. If P2 is greater than or equal to 12 bar, the intelligent cockpit controller prompts that the vehicle load is abnormal and please check the cargo status; when it is less than 12 bar, the MCU records the P2 value at this time. That is, the MCU records a time series by monitoring the AIR1 signal of the actual vehicle in the static state to fit the fitting curve of the theoretical pressure P theory-actual pressure P reality after leakage to obtain the second preset value P2 of the driving alarm air pressure.

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

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

[0053] If so, identify the status of the vehicle's gas-consuming equipment and determine the gas consumption of the gas-consuming equipment; add the gas consumption of the gas-consuming equipment to the vehicle's brake air pressure warning value to obtain a final air pressure warning calibration value, wherein the gas-consuming equipment includes: air suspension, gearbox, solenoid valve, retarder, air horn, vehicle post-processing, cab suspension and seat; if not, use the intelligent cockpit controller 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 can be understood that when the retarder, air horn, gearbox, etc. are turned on during driving, the operating status of very gas-consuming equipment is sent through the relevant controller, and the gas consumption calibration values ​​of its 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 please check the cargo status; when 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, such as Figure 2 As shown, the device comprises:

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

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

[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 interval;

[0063] If so, identifying the state 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 post-processing, cab suspension and seat;

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

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

[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 also used 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 a possible implementation manner, the processing module is further configured to record the time series of the vehicle's circuit air pressure before driving and the circuit air pressure after driving through the CAN signal when the vehicle's static time reaches a set time, so as to fit the theoretical pressure and the actual pressure curve after leakage;

[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 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;

[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 outputted.

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

[0074] If it is determined that the vehicle's current driving condition air pressure is less 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 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 value 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 of the actual vehicle in a static state, records a time series, and performs fitting to obtain a fitting curve of the theoretical pressure Ptheoretical - the actual pressure Pactual after leakage 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 gas-consuming 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 please check the status of the cargo. 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 judged to be within the preset range, the calculated P3 value is directly output. If P3 is judged to be greater than or equal to the upper limit, the intelligent cockpit controller is used to prompt the vehicle load abnormality to 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, 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.

[0085] Considering that the air pressure leakage of the actual vehicle may be different due to factors such as assembly layout, the air pressure leakage of the whole vehicle is identified by parameters when the vehicle is static. The relevant time series Pf1...Pf1n and Pr...Prn of the front circuit air pressure Pf and the rear circuit air pressure Pr in AIR1 of the vehicle are recorded and output through CAN signals for a period of time when the vehicle is static. The fitting curve of theoretical pressure P theoretical - actual pressure P actual after leakage is obtained through parameter identification module fitting. P1 is substituted into the fitting curve to output the maximum theoretical pressure P2 of the front and rear circuit air pressure. If P2 is greater than or equal to 12 bar, the intelligent 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 P2 value at this time.

[0086] When the retarder, air horn, gearbox, etc. are turned on during driving, the operating status of very gas-consuming equipment is sent through the relevant controller. The gas consumption calibration values ​​of its 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 please check the cargo status; when 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.

[0087] In summary, the present application is applicable to different vehicle configurations and vehicle strategies, and different adaptive calibrations can be performed according to the working conditions, thus reducing the testing cost of the vehicle. By establishing different preset values, the vehicle working conditions can be classified, and the diagnostic logic of the warning value reduces the risk of false alarms. The identification of compressed air leakage in the steady state of the vehicle can provide important parameters for the braking system status of the vehicle and improve the safety of the vehicle.

[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 only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0089] like Figure 4 As shown, the electronic device 400 is in the form of a general computing device. The components of the 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 different system components (including the storage unit 420 and the 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 executes the steps according to various exemplary embodiments of the present invention described in the above “Embodiment 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 unit bus or memory unit 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., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 400, and / or communicate with any device that enables the electronic device 400 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 450. Furthermore, the electronic device 400 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, 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, etc.

[0095] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation 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, including 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 implementation 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 method of the present specification is stored. In some possible implementations, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary implementations of the present invention described in the above "Exemplary Method" section of the present specification.

[0097] refer to Figure 5 As shown, a program product 500 for implementing the above method according to an embodiment of the present invention is described, which can adopt a portable compact disk read-only memory (CD-ROM) and include program code, and can 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 can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, an apparatus or a device.

[0098] The program product may use 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 device, or any combination of the above. More specific examples (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 of the above.

[0099] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit 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, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0101] 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++, etc., and 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 separate 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 through 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., through the Internet using an Internet service provider).

[0102] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0103] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[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 flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, 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 process in the flowchart. 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 yes, then 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 through the curve and the actual driving warning air pressure to provide warning.

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 outputted brake air pressure warning value is less than a maximum value of a preset interval; If so, identifying the state 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 post-processing, cab suspension and seat; If not, the intelligent cockpit controller is used to prompt the vehicle load abnormality 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, characterized in that The method of fitting a curve of theoretical pressure and actual pressure after leakage based on the air pressure of the circuit before and after driving, and calculating the vehicle brake air pressure warning value through the curve and the actual driving warning air pressure, includes: When the static time of the vehicle reaches the set time, the time series of the vehicle's circuit air pressure before driving and the circuit air pressure 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.

6. The method according to claim 1, characterized in that The output of the actual driving warning air pressure based on the current vehicle load signal and the calibrated load-air pressure MAP diagram includes: 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; 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 outputted.

7. The method according to claim 1, characterized in that Also includes: Use EBS to broadcast the load signal of the vehicle during driving, and use the vehicle MCU to combine the current driving air pressure signal of the body domain controller for judgment; If it is determined that the vehicle's current driving condition air pressure is less 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.

8. A vehicle brake air pressure warning device, characterized in that: include: A judgment module, which is used to judge whether the vehicle's current driving condition air pressure is greater than the set air pressure; An output module, which is used to output the actual driving warning air pressure based on the current vehicle load signal and the calibrated load-air pressure MAP diagram; 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 issue a warning.

9. 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 7 is implemented.

10. 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 7.

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