Vehicle air pressure signal processing method and device, vehicle, and storage medium

Abstract

This invention discloses a method, apparatus, vehicle, and storage medium for processing vehicle air pressure signals. The method includes: acquiring a set of air pressure signals from multiple braking system circuits of the vehicle, wherein the multiple air pressure signals in the set are determined by multiple signal sources; determining target air pressure signals corresponding to the multiple braking system circuits based on the set of air pressure signals; and determining the overall vehicle air pressure monitoring result based on the target air pressure signals corresponding to the multiple braking system circuits. This invention solves the technical problem of low accuracy in monitoring vehicle air pressure signals in related technologies.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically, to a method, apparatus, vehicle, and storage medium for processing vehicle air pressure signals. Background Technology

[0002] Currently, vehicle air pressure systems generally use air pressure sensors to directly collect the pressure of the air reservoir and output a fixed air pressure signal through instruments or a single controller as a reference source for vehicle control. This method is prone to causing interruptions or false alarms in the vehicle air pressure signal under common operating conditions such as sensor failure, open circuit in the signal line, interruption of controller area network bus communication, or hardware aging, resulting in low accuracy in monitoring vehicle air pressure signals.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention provides a method, apparatus, vehicle, and storage medium for processing vehicle air pressure signals, in order to at least solve the technical problem of low accuracy in monitoring vehicle air pressure signals in related technologies.

[0005] According to one aspect of the present invention, a method for processing vehicle air pressure signals is provided, comprising: acquiring a set of air pressure signals of multiple braking system circuits of a vehicle, wherein the multiple air pressure signals in the set of air pressure signals are determined by multiple signal sources; determining target air pressure signals corresponding to the multiple braking system circuits based on the set of air pressure signals of the multiple braking system circuits; and determining the vehicle air pressure monitoring result based on the target air pressure signals corresponding to the multiple braking system circuits.

[0006] In this embodiment of the invention, determining the target air pressure signal corresponding to multiple braking system circuits based on the air pressure signal set of multiple braking system circuits includes: removing abnormal air pressure signals from multiple air pressure signals in the air pressure signal set of any one braking system circuit to obtain at least one retained air pressure signal; and determining the target air pressure signal corresponding to any one braking system circuit based on the at least one retained air pressure signal.

[0007] In this embodiment of the invention, abnormal air pressure signals are removed from multiple air pressure signals in the air pressure signal set of any braking system circuit to obtain at least one retained air pressure signal. This includes: removing a first abnormal air pressure signal from multiple air pressure signals based on a preset normal air pressure signal range to obtain multiple filtered air pressure signals, wherein the first abnormal air pressure signal is used to represent an air pressure signal that exceeds the preset normal air pressure signal range; removing a second abnormal air pressure signal from the multiple filtered air pressure signals to obtain at least one retained air pressure signal, wherein the difference between the second abnormal air pressure signal and the remaining air pressure signals in the multiple air pressure signals is greater than a preset air pressure difference.

[0008] In an embodiment of the present invention, when there are multiple signals corresponding to at least one retained air pressure signal, determining the target air pressure signal corresponding to any one braking system circuit based on the at least one retained air pressure signal includes: determining the target air pressure signal corresponding to any one braking system circuit based on the priority of the multiple retained air pressure signals.

[0009] In this embodiment of the invention, the plurality of air pressure signals includes at least two of the following: a first air pressure signal, a second air pressure signal, and a third air pressure signal. The first air pressure signal is used to represent the air pressure signal of the braking system circuit monitored by the air pressure sensor. The second air pressure signal is used to represent the air pressure signal of the braking system circuit fed back by the instrument system. The third air pressure signal is used to represent the air pressure signal of the braking system circuit fed back by the chassis control system. The priority of the first air pressure signal is greater than the priority of the second air pressure signal, and the priority of the second air pressure signal is greater than the priority of the third air pressure signal.

[0010] In this embodiment of the invention, the vehicle air pressure monitoring result is determined based on the target air pressure signals corresponding to multiple braking system circuits, including: when the differences between the target air pressure signals corresponding to multiple braking system circuits are all less than a preset deviation, the vehicle air pressure monitoring result is determined to be that the air pressure status of multiple braking system circuits is normal, and the vehicle air pressure value is the average value of the target air pressure signals corresponding to multiple braking system circuits.

[0011] In this embodiment of the invention, the method further includes: if there is a target difference greater than or equal to a preset deviation among the differences between the target air pressure signals corresponding to multiple braking system circuits, the vehicle air pressure monitoring result is determined to be an air pressure deviation fault state in multiple braking system circuits, and a fault warning is issued based on the air pressure deviation fault state.

[0012] According to another aspect of the present invention, a vehicle air pressure signal processing apparatus is also provided, comprising: an acquisition module for acquiring a set of air pressure signals of multiple braking system circuits of a vehicle, wherein the multiple air pressure signals in the air pressure signal set are determined by multiple signal sources; a first determination module for determining target air pressure signals corresponding to the multiple braking system circuits based on the set of air pressure signals of the multiple braking system circuits; and a second determination module for determining the vehicle air pressure monitoring result based on the target air pressure signals corresponding to the multiple braking system circuits.

[0013] The first determining module is further configured to remove abnormal air pressure signals from multiple air pressure signals in the air pressure signal set of any braking system circuit to obtain at least one retained air pressure signal; and to determine the target air pressure signal corresponding to any braking system circuit based on the at least one retained air pressure signal.

[0014] The first determining module is further configured to, based on a preset normal air pressure signal range, remove a first abnormal air pressure signal from a plurality of air pressure signals to obtain a plurality of filtered air pressure signals, wherein the first abnormal air pressure signal is used to represent an air pressure signal that exceeds the preset normal air pressure signal range; and remove a second abnormal air pressure signal from the plurality of filtered air pressure signals to obtain at least one retained air pressure signal, wherein the difference between the second abnormal air pressure signal and the other air pressure signals in the plurality of air pressure signals is greater than a preset air pressure difference.

[0015] In the case where there are multiple signals corresponding to at least one retained air pressure signal, the first determining module is further configured to determine the target air pressure signal corresponding to any braking system circuit based on the priority of the multiple retained air pressure signals.

[0016] The multiple air pressure signals include at least two of the following: a first air pressure signal, a second air pressure signal, and a third air pressure signal. The first air pressure signal represents the air pressure signal of the braking system circuit monitored by the air pressure sensor. The second air pressure signal represents the air pressure signal of the braking system circuit fed back by the instrument system. The third air pressure signal represents the air pressure signal of the braking system circuit fed back by the chassis control system. The priority of the first air pressure signal is greater than the priority of the second air pressure signal, and the priority of the second air pressure signal is greater than the priority of the third air pressure signal.

[0017] The second determining module is further configured to determine the vehicle air pressure monitoring result as normal air pressure status of multiple braking system circuits and the vehicle air pressure value as the average value of the target air pressure signals corresponding to multiple braking system circuits when the difference between the target air pressure signals corresponding to multiple braking system circuits is less than a preset deviation.

[0018] The second determining module is further configured to determine the vehicle air pressure monitoring result as an air pressure deviation fault state in multiple braking system circuits when there is a target difference greater than or equal to a preset deviation among the differences between the target air pressure signals corresponding to multiple braking system circuits, and to issue a fault warning based on the air pressure deviation fault state.

[0019] According to another aspect of the present invention, a vehicle is also provided, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods of various embodiments of the present invention during runtime.

[0020] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is executed, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0021] According to another aspect of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0022] According to another aspect of the present invention, a computer program product is also provided, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0023] According to another aspect of the present invention, a computer program is also provided, which, when executed by a processor, implements the methods of the various embodiments of the present invention.

[0024] In this embodiment of the invention, firstly, a set of air pressure signals from multiple braking system circuits of the vehicle is acquired; then, based on the set of air pressure signals from multiple braking system circuits, a target air pressure signal corresponding to each braking system circuit is determined; finally, based on the target air pressure signal corresponding to each braking system circuit, the overall vehicle air pressure monitoring result is determined. This application constructs a multi-source air pressure signal acquisition mechanism, ensuring that the vehicle control unit can stably acquire multi-source air pressure signals under different communication topologies or operating states, providing a reliable input set for subsequent judgment logic and improving the vehicle's fault tolerance to signal interruptions, delays, or broadcast loss. By comparing across signal sources to determine the target air pressure signal corresponding to multiple braking system circuits, the stability and reliability of the target air pressure signal are improved, avoiding misjudgments of the vehicle control strategy due to a single signal source failure or soft failure, thereby solving the technical problem of low accuracy in monitoring vehicle air pressure signals in related technologies. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a flowchart of a method for processing vehicle air pressure signals according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the hardware architecture of a vehicle air pressure signal processing system according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of a vehicle air pressure signal processing procedure according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of an optional vehicle air pressure signal processing procedure according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of another optional vehicle air pressure signal processing procedure according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of a vehicle air pressure signal processing device according to an embodiment of the present invention. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] According to one aspect of the present invention, a method for processing vehicle air pressure signals is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0035] Figure 1 This is a flowchart of a vehicle air pressure signal processing method according to an embodiment of the present invention, as shown below. Figure 1 As shown, the method includes the following steps:

[0036] Step S102: Obtain the air pressure signal set of multiple braking system circuits of the vehicle.

[0037] Among them, multiple pressure signals in the pressure signal set are determined by multiple signal sources.

[0038] The aforementioned vehicles may refer to heavy or medium-sized vehicles equipped with air pressure braking systems. These systems rely on air pressure signals to achieve electronic control functions such as service braking, parking braking, airbag adjustment, electronic parking brake, and air suspension. The vehicle is equipped with at least a dual-circuit air pressure system to ensure braking redundancy and driving safety.

[0039] The aforementioned multiple braking system circuits can refer to two or more independently operating air pressure circuits in a vehicle's air pressure braking system. These can be front axle circuits and rear axle circuits, each with its own independent air source path, sensors, and control logic to achieve redundant design of the braking system. In this application, signal processing is performed using the first braking system circuit and the second braking system circuit as examples.

[0040] The aforementioned air pressure signal set can refer to a collection of multiple air pressure values ​​from different signal sources collected for a specific braking system circuit. Each air pressure signal set includes multiple air pressure signals, which are used for subsequent judgment and reliability assessment.

[0041] The aforementioned multiple air pressure signals can refer to multiple air pressure measurements from different sources corresponding to the same braking system circuit. These may include, but are not limited to, air pressure signals collected by the vehicle's air pressure sensors, air pressure signals broadcast by the vehicle's instrument system via the controller area network bus, and air pressure signals fed back by chassis control systems such as the electronic parking brake system or the electronically controlled air suspension system module. These multiple air pressure signals have different sources and different acquisition paths.

[0042] The aforementioned multiple signal sources can refer to independent hardware or software modules used to acquire air pressure signals. These may include, but are not limited to, physical air pressure sensors installed in air tanks or important nodes in the air circuit; vehicle instrument systems that process sensor data internally and broadcast it via the controller area network bus; and chassis control systems, such as electronic parking brake systems or electronically controlled air suspension systems, which have independent air pressure acquisition or estimation capabilities. These multiple signal sources are redundant, achieving independence from a single source.

[0043] In one optional embodiment, when the vehicle is normally powered on and operating, the vehicle control unit can periodically poll multiple independent signal sources via the controller area network bus to receive multiple air pressure signals from each braking system circuit. The vehicle control unit can capture multiple air pressure signals in each control cycle, constructing an air pressure signal set for that braking system circuit. This process relies on stable communication and timestamp alignment among the signal sources and is suitable for normal operating conditions where all signal sources are online and communication links are functioning correctly, providing a data foundation for subsequent judgments.

[0044] In another optional embodiment, after vehicle startup or in diagnostic mode, the vehicle control unit can proactively send request messages to each signal source, triggering each module to report the current air pressure status. For example, the vehicle control unit requests air tank pressure data from the instrument system, requests parking air circuit pressure feedback from the electronic parking brake system, and reads the analog input value of the local air pressure sensor. This method is a request-response mode, which does not rely on periodic broadcasting and can effectively cope with signal loss or communication delay scenarios, ensuring that a complete set of air pressure signals can still be quickly obtained when the vehicle has just started or when communication is restored from an anomaly. This process is suitable for fault diagnosis, offline testing, or offline calibration stages, enhancing the controllability and completeness of signal acquisition.

[0045] Through the above settings, a multi-signal source acquisition mechanism is constructed to ensure that the vehicle control unit can stably acquire multi-source air pressure signals under different communication topologies or operating conditions, providing a reliable, real-time, and complete input set for subsequent decision-making logic, and improving the vehicle's fault tolerance to signal interruption, delay, or broadcast loss.

[0046] Step S104: Based on the set of air pressure signals of multiple braking system circuits, determine the target air pressure signals corresponding to the multiple braking system circuits.

[0047] The aforementioned target air pressure signal can refer to the air pressure value selected from the set of air pressure signals after judgment and rationality assessment, and used as the reference for the output of the braking system circuit. The target air pressure signal can be the result of comprehensive selection, used to replace abnormal or failed values ​​in the original multi-signal set, ensuring the continuity and reliability of the output signal.

[0048] In one optional embodiment, when all signal sources in the set of air pressure signals from multiple braking system circuits are in a valid state and there are no abnormal values ​​exceeding the preset normal range, the vehicle control unit can perform priority determination and select the air pressure signal with higher priority as the target air pressure signal for that braking system circuit according to the preset priority order. This process is a single-point selection mechanism that does not rely on consistency judgment between signals, but sorts them according to the inherent reliability of the signal sources, avoiding delays or errors introduced by algorithm superposition.

[0049] In another optional embodiment, when multiple air pressure signals exist in the air pressure signal set, but there is a significant deviation between them, such as the air pressure difference between two air pressure signals exceeding the corresponding threshold, but neither exceeding the range, the vehicle control unit enters the reasonableness fault identification process. At this time, by comparing the consistency between the air pressure signals, a reasonable air pressure signal is selected as the target air pressure signal. This process is a dynamic reliability substitution, which judges whether the main source is inaccurate by the relative relationship between air pressure signals, rather than relying solely on priority, to achieve intelligent identification and automatic fault tolerance for latent faults such as sensor drift and local interference.

[0050] The above settings ensure that a highly reliable signal is output under normal operating conditions. By actively avoiding erroneous inputs through cross-source comparison, the stability and reliability of the target air pressure signal are improved, and misjudgment of the vehicle control strategy is avoided due to the failure of a single signal source or soft failure.

[0051] Step S106: Determine the vehicle air pressure monitoring result based on the target air pressure signals corresponding to multiple braking system circuits.

[0052] The aforementioned vehicle air pressure monitoring result refers to a comprehensive judgment of the vehicle air pressure status obtained by cross-comparing the target air pressure signals of multiple braking system circuits. The content of the vehicle air pressure monitoring result may include whether the vehicle air pressure is normal; if normal, the average value of the target air pressure signals corresponding to multiple braking system circuits is output as the vehicle air pressure reference value; if abnormal, a braking system circuit air pressure deviation fault is determined, and an alarm and fault code recording are triggered. The vehicle air pressure monitoring result can be used as air pressure status information output by the vehicle control unit for other control units to access and for human-machine interaction and safety decision-making.

[0053] In one optional embodiment, if the target air pressure signals output by each braking system circuit are all valid after verification, the vehicle control unit determines that the vehicle's air pressure system is in a balanced and stable state. At this point, the target air pressure signals output by multiple braking system circuits can be arithmetically averaged to generate a unified vehicle air pressure monitoring result. This vehicle air pressure monitoring result represents the overall true level of vehicle air pressure, effectively offsetting minor inconsistencies between circuits caused by minor pressure losses in pipelines, individual sensor deviations, or differences in installation positions. This ensures that the air pressure references received by other vehicle control units, such as the electronic parking brake system and the electronically controlled air suspension system, have higher accuracy and representativeness, avoiding misleading vehicle decisions due to local deviations in signals from a single circuit.

[0054] In another optional embodiment, if the difference in target air pressure signals output by multiple braking system circuits is greater than or equal to the corresponding preset deviation, the vehicle control unit can determine that the vehicle air pressure monitoring result is in an air pressure deviation fault state. In this case, the monitoring result can be marked as abnormal, and a fault response mechanism can be triggered, indicating that there is a structural imbalance in the vehicle air pressure, possibly due to leakage, valve sticking, or unilateral sensor drift, exceeding the normal fluctuation range. The vehicle air pressure monitoring result can include fault indicators and diagnostic codes, used to drive instrument alarms, enable the parking function, record fault codes and prompt maintenance, thereby switching the air pressure value output mode to a safety status indication mode, prioritizing driving safety.

[0055] Through the above settings, a response logic for determining the vehicle air pressure monitoring results is constructed, enabling the vehicle air pressure monitoring results to have high-precision dynamic reference capabilities. This effectively prevents risks such as braking imbalance, vehicle deviation, or parking failure caused by uneven air pressure distribution, and improves the safety robustness and fault response intelligence of the vehicle control system.

[0056] In this embodiment of the invention, firstly, a set of air pressure signals from multiple braking system circuits of the vehicle is acquired; then, based on the set of air pressure signals from multiple braking system circuits, a target air pressure signal corresponding to each braking system circuit is determined; finally, based on the target air pressure signal corresponding to each braking system circuit, the overall vehicle air pressure monitoring result is determined. This application constructs a multi-source air pressure signal acquisition mechanism, ensuring that the vehicle control unit can stably acquire multi-source air pressure signals under different communication topologies or operating states, providing a reliable input set for subsequent judgment logic and improving the vehicle's fault tolerance to signal interruptions, delays, or broadcast loss. By comparing across signal sources to determine the target air pressure signal corresponding to multiple braking system circuits, the stability and reliability of the target air pressure signal are improved, avoiding misjudgments of the vehicle control strategy due to a single signal source failure or soft failure, thereby solving the technical problem of low accuracy in monitoring vehicle air pressure signals in related technologies.

[0057] In this embodiment of the invention, determining the target air pressure signal corresponding to multiple braking system circuits based on the air pressure signal set of multiple braking system circuits includes: removing abnormal air pressure signals from multiple air pressure signals in the air pressure signal set of any one braking system circuit to obtain at least one retained air pressure signal; and determining the target air pressure signal corresponding to any one braking system circuit based on the at least one retained air pressure signal.

[0058] The aforementioned abnormal air pressure signal can refer to an air pressure value in the set of air pressure signals of a certain braking system circuit that does not meet the criteria for physical rationality and system reliability. Abnormal air pressure signals may include, but are not limited to, signals that exceed the preset normal air pressure range, i.e., air pressure values ​​that are lower than the lower limit of the system's allowable threshold or higher than the upper limit of the threshold, such as sensor open circuit causing abnormal output or short circuit causing output to exceed the range. These signals are deemed invalid because they clearly violate physical laws. Signals that are significantly inconsistent with other valid signals in the same circuit, i.e., although within the normal range, the difference between them and other signals exceeds the corresponding preset air pressure difference. Because they deviate significantly from most signals, they are deemed reasonable fault signals. These abnormalities usually originate from sensor drift, communication interference, or module soft faults.

[0059] The aforementioned retained at least one air pressure signal can refer to the remaining air pressure signal that, after removing abnormal air pressure signals, still meets the requirements of system rationality and consistency, can be trusted, and can be used for subsequent judgment.

[0060] In one alternative embodiment, if a signal in the air pressure signal set of a certain braking system circuit exceeds a preset physical range, the vehicle control unit can perform hard limit filtering to retain air pressure signals that conform to the physical range. This process is based on hardware-level safety boundaries.

[0061] In another optional embodiment, if all air pressure signals are within the preset normal range, but a certain air pressure signal is significantly inconsistent with other air pressure signals, the vehicle control unit can activate the abnormal rejection logic to identify and reject the abnormal air pressure signal, thereby eliminating unreliable hidden faults such as sensor drift, communication interference, and control unit algorithm deviation. By judging relative differences, intelligent identification of soft faults can be achieved, avoiding misleading the vehicle control decision due to false alarms from a single module.

[0062] By implementing the above settings, physical failure signals are eliminated, logical anomaly signals are identified, and the reliability of the air pressure signal set is improved. This enables the vehicle to accurately retain reliable signals when facing diverse fault modes, ensuring that the output of the target air pressure signal is based on real, stable, and reliable data. This enhances the safety redundancy and fault tolerance level of the vehicle control system.

[0063] In this embodiment of the invention, abnormal air pressure signals are removed from multiple air pressure signals in the air pressure signal set of any braking system circuit to obtain at least one retained air pressure signal. This includes: removing a first abnormal air pressure signal from multiple air pressure signals based on a preset normal air pressure signal range to obtain multiple filtered air pressure signals, wherein the first abnormal air pressure signal is used to represent an air pressure signal that exceeds the preset normal air pressure signal range; removing a second abnormal air pressure signal from the multiple filtered air pressure signals to obtain at least one retained air pressure signal, wherein the difference between the second abnormal air pressure signal and the remaining air pressure signals in the multiple air pressure signals is greater than a preset air pressure difference.

[0064] The aforementioned preset normal air pressure signal range refers to the theoretically expected range of physical values ​​that the air pressure sensor or signal source should output under normal operating conditions of the vehicle's air pressure braking system, as determined by vehicle design specifications and safety standards. Signals exceeding the preset normal air pressure signal range are considered obvious failures or hardware malfunctions. The preset normal air pressure signal range is a hard physical limit used to filter abnormal air pressure signals, such as sensor disconnection, short circuit, or power supply abnormalities.

[0065] The aforementioned first abnormal air pressure signal can refer to an air pressure signal in a braking system circuit whose value exceeds the preset normal air pressure signal range. This first abnormal air pressure signal lacks physical authenticity and is caused by sensor hardware failure, power supply abnormality, or wiring harness interruption.

[0066] The aforementioned second abnormal air pressure signal can refer to an air pressure signal that is significantly inconsistent with other air pressure signals in the same set, provided that all remaining signals are within the preset normal range after the first abnormal air pressure signal has been removed. Although the second abnormal air pressure signal is within the measurement range, its significant inconsistency with other air pressure signals may stem from signal transmission interference, internal algorithm errors within the module, or local sensor drift. This constitutes a soft fault or reliability anomaly and must be removed to avoid misleading the judgment result.

[0067] In one optional embodiment, the vehicle control unit receives air pressure signals from multiple signal sources in each control cycle and performs a hard check based on a preset normal range according to the physical characteristics of the air pressure braking system. If an air pressure signal exceeds the preset normal air pressure signal range, it is identified as the first abnormal air pressure signal and is rejected. This stage does not perform inter-signal comparisons, but only judges based on physical limits. This is a low-level hardware-level safety filter, which prevents extreme abnormal values ​​caused by sensor hardware damage, power supply abnormalities, or signal interference from entering subsequent logic, thus preventing miscontrol or system oscillation.

[0068] In another optional embodiment, provided that all remaining air pressure signals after screening are within the preset normal air pressure signal range, the vehicle control unit initiates a relative consistency detection. Even if the second abnormal air pressure signal does not exceed the limit, if it is significantly inconsistent with the other air pressure signals, it is considered to be caused by abnormal drift or communication interference and is therefore discarded. Finally, at least one retained air pressure signal is obtained as the basis for subsequent judgment. This process identifies pseudo-normal anomalies through the relative dispersion between signals, and is used to detect hidden faults such as sensor aging, local electromagnetic interference, or control unit algorithm errors.

[0069] Through the above settings, a relatively complete anomaly filtering process is constructed, which effectively distinguishes between hardware failure and logic anomaly, improves the purity and reliability of the signal set, and enables the vehicle to resist sudden hardware failures when facing complex and ever-changing in-vehicle environments, while accurately identifying soft drift interference, ensuring that the retained air pressure signal is stable and reliable air pressure data, and providing technical support for the accurate output of the subsequent target air pressure.

[0070] In an embodiment of the present invention, when there are multiple signals corresponding to at least one retained air pressure signal, determining the target air pressure signal corresponding to any one braking system circuit based on the at least one retained air pressure signal includes: determining the target air pressure signal corresponding to any one braking system circuit based on the priority of the multiple retained air pressure signals.

[0071] The aforementioned priority refers to the sorting rules among multiple air pressure signals retained in a braking system circuit, based on the reliability, directness, safety, and system architecture level of the signal source. Priority is a static configuration parameter, fixed in the vehicle control system, used to select a reliable signal as the target air pressure signal when multiple signals are valid and show no obvious anomalies.

[0072] In one optional embodiment, when a braking system loop retains multiple valid air pressure signals after prior rejection, the vehicle control unit does not perform average calculation or voting decision. Instead, it executes a single-point selection strategy based on a preset signal source priority sequence, directly selecting the air pressure signal with higher priority as the target air pressure signal corresponding to the braking system loop. This process relies on hierarchical priority configuration, with the logic of prioritizing the more reliable signal. This ensures that when multiple air pressure signals have not failed, the output air pressure measurement value is closer to the real air pressure and has stronger anti-interference capabilities. This avoids delays or estimation errors introduced by multi-source fusion, and ensures the real-time performance and determinism of braking control.

[0073] In another alternative embodiment, when among the retained multiple air pressure signals, a higher-priority signal is marked as potentially unreliable due to historical data or diagnostic logic, such as having experienced occasional deviations but not being eliminated, while the lower-priority signal has maintained high consistency for several consecutive cycles recently, the vehicle control unit may not change the priority rules, adhere to the static priority principle, and take the higher-priority signal as the standard. This mechanism excludes dynamic weight adjustment or learning-based decision-making, ensuring that the decision logic is predictable, verifiable, and auditable, which meets the requirements of deterministic control for vehicle functional safety.

[0074] By adopting the above settings, the complexity and uncertainty brought about by multi-source fusion are avoided, the generation mechanism of the target air pressure signal is highly interpretable and verifiable, the reliability and stability of the vehicle in different scenarios are improved, and the vehicle control strategy is ensured to be based on a clear, traceable signal source that meets the engineering design expectations, effectively preventing potential safety risks caused by misjudgment by adaptive algorithms.

[0075] In this embodiment of the invention, the plurality of air pressure signals includes at least two of the following: a first air pressure signal, a second air pressure signal, and a third air pressure signal. The first air pressure signal is used to represent the air pressure signal of the braking system circuit monitored by the air pressure sensor. The second air pressure signal is used to represent the air pressure signal of the braking system circuit fed back by the instrument system. The third air pressure signal is used to represent the air pressure signal of the braking system circuit fed back by the chassis control system. The priority of the first air pressure signal is greater than the priority of the second air pressure signal, and the priority of the second air pressure signal is greater than the priority of the third air pressure signal.

[0076] The aforementioned first air pressure signal can refer to the air pressure signal that is collected and output in real time by a physical air pressure sensor directly installed in the braking system circuit, such as the air reservoir of the front or rear axle. In this application, the first air pressure signal serves as the first priority source in the redundancy system.

[0077] The aforementioned second air pressure signal can refer to an air pressure signal for the braking system circuit broadcast by the vehicle's instrument system via the controller area network bus. In this application, the second air pressure signal has a lower priority than the first air pressure signal and serves as a substitute when the first air pressure fails, in order to maintain consistency between system operation and driver perception.

[0078] The aforementioned third air pressure signal can refer to the air pressure signal related to the braking system circuit, acquired and fed back by the chassis control system, such as the electronic parking brake system or air suspension system, based on its own sensors or internal air pressure estimation model. The third air pressure signal is derived data serving local functions, such as parking lock and suspension height adjustment. The acquisition point of the third air pressure signal can be located in a non-main air circuit, such as the brake chamber or auxiliary air tank, and can be estimated by algorithms rather than direct measurement. In this application, it serves as a lower-priority backup signal, activated when the preceding signal fails, to maintain basic functions without interruption and prevent the loss of the entire vehicle's air pressure signal; it is a defensive redundancy source.

[0079] In one optional embodiment, during normal vehicle operation, the vehicle control unit can receive air pressure data from multiple independent signal sources. The first air pressure signal is acquired by a high-precision analog air pressure sensor directly installed in the air reservoir and transmitted in real-time via hardwired or single-sided half-word transmission protocol. The second air pressure signal is obtained by the instrument system, internally filtered, calibrated, and broadcast via the controller area network bus. The third air pressure signal is estimated and uploaded by the chassis control system, such as the electronic parking brake system or the electronically controlled air suspension system, based on its internal pressure sampling module. The vehicle control unit determines whether the first air pressure signal is valid and has not been rejected according to a preset priority order. If the first air pressure signal exists and falls within the physical range, it is used as the target air pressure signal. This implementation process reflects the principle of source priority; the original measurement value, which is closer to the air source, has higher reliability, avoiding the influence of intermediate links, such as delays introduced by instrument processing and chassis estimation, algorithm deviations, or communication jitter on control decisions.

[0080] In another alternative embodiment, when the first air pressure signal is rejected due to sensor failure or wiring harness damage, the vehicle control unit downgrades to the second air pressure signal, using it as the target air pressure signal for the braking system circuit. If the second air pressure signal also fails, the third air pressure signal is activated. For example, if the first air pressure signal is lost, but the instrument panel shows stable air pressure and no communication errors, the vehicle control unit uses the second air pressure signal without waiting for comparison or weighting of the third air pressure signal. This process embodies a hierarchical principle, a hierarchical design stemming from the deterministic logic requirements of vehicle functional safety, avoiding unpredictable behavior caused by dynamic weight adjustments or machine learning.

[0081] Through the above settings, a progressively degraded trust chain is constructed. Essentially, it establishes trust levels based on the physical distance of the signal path and the originality of the data. This can improve the predictability and safety of the vehicle in fault scenarios, ensuring that the vehicle can maintain its function with a reliable and verifiable suboptimal signal in the event of a single point of failure. It avoids the confusion caused by the mixing of multiple sources of information and provides a clear, stable signal selection path that complies with engineering safety specifications for the vehicle's air pressure control.

[0082] In this embodiment of the invention, the vehicle air pressure monitoring result is determined based on the target air pressure signals corresponding to multiple braking system circuits, including: when the differences between the target air pressure signals corresponding to multiple braking system circuits are all less than a preset deviation, the vehicle air pressure monitoring result is determined to be that the air pressure status of multiple braking system circuits is normal, and the vehicle air pressure value is the average value of the target air pressure signals corresponding to multiple braking system circuits.

[0083] The aforementioned preset deviation refers to a threshold parameter used to determine whether there is an asymmetrical fault or imbalance in the air pressure status of multiple braking system circuits in a vehicle. The preset deviation can be pre-set according to engineering specifications such as the structural design, pipeline length, load distribution, and safety redundancy requirements of the vehicle's air pressure braking system. The purpose of the preset deviation is to verify whether the target air pressure signals of multiple braking system circuits are within a reasonable and consistent range. If they are within this range, the air pressure of the multiple braking system circuits is considered balanced, the system is operating normally, and there are no structural faults such as pipeline leaks, valve jamming, or unilateral sensor malfunctions. If they are not within this range, an air pressure deviation fault is identified, triggering a fault alarm and safety protection mechanism. The preset deviation serves as a crucial criterion for the safety redundancy design of the vehicle's air pressure system, ensuring that even if a single-circuit signal is normal, systemic anomalies across circuits can still be detected.

[0084] The aforementioned vehicle air pressure value refers to a comprehensive reference value calculated and output by the vehicle control unit, representing the current air pressure status of the entire vehicle, assuming that the target air pressure signals corresponding to multiple braking system circuits are all normal and the differences are less than a preset deviation. The vehicle air pressure value can be the arithmetic mean of the target air pressure signals corresponding to multiple braking system circuits, serving as a vehicle-level air pressure benchmark. This value can be used to drive the instrument panel air pressure display, trigger inflation control logic, support parking force calculation in the electronic parking system, adjust airbag height, and provide closed-loop feedback for the braking system. By using an average value rather than a single-circuit value, the vehicle air pressure value effectively offsets minor circuit differences, improves the stability and robustness of air pressure output, reflects the majority consistency safety principle under the redundancy of multiple braking system circuits, and achieves safe, continuous, and accurate vehicle air pressure monitoring output results.

[0085] In one optional embodiment, when the target air pressure signals output by each of the multiple braking system circuits are all in a valid state and the difference is less than a preset deviation, the vehicle control unit determines that the air pressure distribution of the multiple braking system circuits is balanced and there are no structural abnormalities. At this time, the vehicle air pressure monitoring result can be determined as the air pressure status of the multiple braking system circuits being normal, and the average value of the target air pressure signals corresponding to the multiple braking system circuits can be determined as the vehicle air pressure value. The vehicle air pressure value integrates the target air pressure signals of multiple braking system circuits, effectively offsetting local fluctuations caused by differences in installation position, minor pressure loss in pipelines, or individual sensor calibration deviations. The output vehicle air pressure value is closer to the actual system pressure level, providing a stable and high-precision reference benchmark for subsystems that rely on precise air pressure, such as airbag height adjustment and electronic parking force control, avoiding malfunctions in control commands due to minor deviations in single-point signals.

[0086] By implementing the above settings, while ensuring the consistency of air pressure in multiple braking system circuits, the accuracy and anti-interference capability of the overall vehicle air pressure value are further improved. This avoids the misleading effect of local deviations from a single signal source on vehicle control, making the vehicle air pressure monitoring results more reliable and practical for engineering applications. It provides the vehicle with a true, stable, and smooth air pressure reference, enhancing the vehicle's control robustness and safety under complex operating conditions.

[0087] In this embodiment of the invention, the method further includes: if there is a target difference greater than or equal to a preset deviation among the differences between the target air pressure signals corresponding to multiple braking system circuits, the vehicle air pressure monitoring result is determined to be an air pressure deviation fault state in multiple braking system circuits, and a fault warning is issued based on the air pressure deviation fault state.

[0088] The aforementioned air pressure deviation fault state refers to a systemic safety anomaly determined by the vehicle control unit, indicating a clear asymmetry in the air pressure distribution of multiple braking system circuits. Possible causes include air leakage in a braking system circuit, brake chamber jamming, solenoid valve failure, pipeline blockage, or structural or mechanical faults such as long-term drift of a single-sided air pressure sensor. The air pressure deviation fault state reflects a disruption of the balance of the vehicle's air pressure system, posing potential safety hazards such as brake performance imbalance, vehicle pull, and parking brake failure, requiring timely intervention.

[0089] The aforementioned fault warnings refer to a series of proactive response measures automatically triggered by the vehicle control unit after determining that a tire pressure deviation fault exists. These measures are designed to alert the driver, assist in maintenance diagnosis, and ensure driving safety. Specific measures may include: illumination of instrument panel fault lights, such as a brake system warning light that illuminates continuously or flashes, visually indicating an abnormal tire pressure; audible and visual alarms, such as intermittent beeping from a buzzer, to enhance alertness; display of fault information on the human-machine interface, such as a text prompt on the vehicle's display screen, like "Tire pressure system imbalance, please have it checked as soon as possible"; fault code writing and broadcasting, recording standard fault codes in the vehicle diagnostic system for technicians to read using a diagnostic tool to accurately pinpoint the fault type; and restricting certain functions, such as disabling automatic parking, limiting airbag height adjustment, or restricting vehicle start-up and acceleration to reduce driving risks.

[0090] In one optional embodiment, if the target air pressure signal differences among multiple braking system circuits are greater than or equal to a preset deviation, the vehicle air pressure monitoring results are determined to indicate an air pressure deviation fault state in multiple braking system circuits, and a fault warning is issued based on this fault state. This determination is based on the physical isolation characteristics of the independent air paths of multiple braking system circuits. Under normal operating conditions, the air pressures of multiple braking system circuits should be basically synchronized. If a significant difference occurs, it indicates a structural problem in one braking system circuit, such as leakage, valve jamming, pipe blockage, or sensor failure. In this case, the fault state can be directly locked, triggering a fault code, activating the instrument air pressure warning light, initiating an audible and visual alarm, and broadcasting the air pressure deviation fault state to associated controllers such as the electronic parking brake system and the electronically controlled air suspension system, entering a safety protection mode, such as disabling automatic parking, to prevent brake failure or vehicle deviation due to air pressure imbalance.

[0091] In another alternative embodiment, after determining the air pressure deviation fault state, the vehicle control unit can further execute fault tracing auxiliary logic to compare the historical trends and change rates of air pressure in multiple braking system circuits, provide clues for the diagnostic system, and ensure that when a safety risk is confirmed, explicit warnings and strategies to prevent misuse are prioritized, thereby avoiding potential accident risks.

[0092] By setting up the above system, air pressure deviation is considered a high-risk safety event. Through an immediate and clear warning mechanism, the driver and maintenance system are made aware of the abnormality of the vehicle's air pressure system at the first time. This improves the visibility of faults and the safety redundancy of the vehicle's braking system, and effectively prevents cascading functional failures caused by hidden air pressure imbalances.

[0093] The technical solution proposed in this application is described below with reference to an optional embodiment. This application proposes a method for processing and controlling air pressure signals in commercial vehicles. The device and control method of this application relate to the control technology of the electronic control system of commercial vehicles. Based on the vehicle's electronic architecture configuration, this application performs multi-source composite acquisition and arbitration of the vehicle's air pressure signals to ensure the stability and reliability of the air pressure signals output by the vehicle, thereby ensuring the vehicle's driving safety and the safe and effective operation of various electronic control functions. Based on the vehicle controller and air pressure signals, when the first air pressure signal fails, it promptly switches to the second or third air pressure signal; based on the composite air pressure signal source, it has the capability to determine the reasonableness of the first, second, and third air pressure signals. By outputting a reference air pressure signal through the vehicle control unit, it ensures that the vehicle can still maintain a high probability of continuously and effectively outputting the vehicle's air pressure signal even in fault scenarios. In the air pressure signal control scheme, a multi-path vehicle air source signal is added. When the first air pressure signal of the vehicle fails, the second air pressure signal is promptly collected and switched. When the second air pressure signal fails, the third air pressure signal is promptly collected and switched. If the first, second, or third air pressure signals fail to determine their validity during vehicle operation, the system will promptly switch to a reliable air pressure signal source to ensure that the vehicle air pressure signal can be continuously and stably effective.

[0094] The commercial vehicle air pressure signal processing and control method described in this application mainly includes the following associated control systems and components: vehicle control unit, air pressure sensor, instrument system, and chassis control system. The sensor and controller signal transmission can be in the form of physical analog signals, controller area networks, local interconnection networks, one-way half-word transmission protocols, etc. Vehicle controllers such as the vehicle control unit, instrument system, and chassis control system typically adopt a composite commercial vehicle signal communication data transmission protocol. The air pressure sensor is used to collect and measure the pressure values ​​of important air pressure points in the vehicle, thereby characterizing the overall vehicle pressure. It can be a commercial vehicle air tank device, a commercial vehicle air filter treatment unit, etc. Since the braking system circuit design of commercial vehicles can be dual-path, air pressure sensors can be used in pairs throughout the vehicle.

[0095] The instrument system, as a control system for processing vehicle air pressure signals, can source signals from the pressure sensors of the air reservoir device. The second air pressure signal, besides being displayed on the instrument panel for dual-channel air pressure, can also be sent to the vehicle controller's local area network (LAN) bus. In this application, the vehicle output air pressure value is the value sent by the vehicle control unit, not an instrument signal. The chassis control system may include electronic braking, air suspension, electronic parking brake, and other systems. Some chassis control systems possess the hardware and software resources to collect vehicle air pressure signals and can also provide corresponding reference signals for vehicle control. This application uses the air pressure collection value of the electronic parking brake system as an example. In the associated chassis control system, sensors can collect the pressure value of the unreduced air circuit of the vehicle, thereby replacing the vehicle pressure signal. As a crucial system for arbitrating vehicle air pressure signals, the vehicle control unit receives the first air pressure signal from the controller area network bus, the second air pressure signal displayed by the driver's human-machine interface, and the processing results of air pressure alarms, all of which originate from the vehicle control unit. The target air pressure signal output by the vehicle control unit is transmitted to other control systems via the communication bus to achieve joint control of the vehicle's electronic functions. Table 1 below is an example table for determining the target air pressure signal based on multiple air pressure signals.

[0096]

[0097] The air pressure signal arbitration processing module implements air pressure signal arbitration processing through a software solution. In the case of a commercial vehicle with a dual-path pressure circuit, the explanation focuses on the first braking system circuit; the other braking system circuits are similar and will not be elaborated upon. The air consumption signal processing arbitration section has a priority setting: the vehicle's air pressure sensor value P11 is the first air pressure signal, the instrument panel air pressure P12 is the second air pressure signal, and the chassis control system air pressure P13 is the third air pressure signal. If all three air pressure signals are valid, according to the priority arbitration logic, the first braking system circuit determines the target air pressure signal P1 using the first air pressure signal. If the first air pressure signal P11 is lost, but the second and third air pressure signals P12 and P13 are valid, according to the priority arbitration logic, the first braking system circuit determines the target air pressure signal P1 using the second air pressure signal. If the first air pressure signal P11 and the second air pressure signal P12 are lost, but the third air pressure signal P13 is valid, according to the priority arbitration logic, the first braking system circuit of the vehicle will determine the target air pressure signal P1 using the third air pressure signal. If all three air pressure signals are lost, according to the priority arbitration logic, the first braking system circuit of the vehicle will determine the target air pressure signal P1 as faulty. If all three air pressure signals are valid, but the pressure difference between the second and first air pressure signals exceeds the system's preset threshold θ, and the absolute pressure difference between the second and third air pressure signals is within the reasonable tolerance ε (i.e., (β-α>θ) & (|β-γ|<ε), then the determination of reasonableness is faulty, and the first braking system circuit of the vehicle will determine the target air pressure signal P1 using the second air pressure signal. The threshold θ is determined by the difference between the second air pressure signal and the first air pressure signal. The absolute value is not taken because the usual fault mode is that the first air pressure signal source is damaged and the signal is too small, while the normal air pressure value of the actual vehicle is greater than the first air pressure signal.

[0098] It can also perform dual-circuit pressure determination, comparing the target air pressure signal P1 of the first braking system circuit with the target air pressure signal P2 of the second braking system circuit. If |P1-P2|>λ, then a fault of excessive pressure deviation between the two circuits is determined. In the fault states described above, the vehicle has functions such as fault code broadcasting, fault light activation, human-machine interface display, audible and visual alarm prompts, and fault code recording.

[0099] The air pressure signal processing control method for commercial vehicles proposed in this application, taking a dual-circuit air source pressure loop in a commercial vehicle as an example, sets preset priorities, effective value rationality judgment, dual-circuit air source pressure signal arbitration, and dual-circuit judgment value rationality judgment. Specifically, the controller presets the first braking system loop, enabling the first air pressure signal P11, the second air pressure signal P12, and the third air pressure signal P13 with priority. Taking the first air source loop of the dual-circuit air pressure loop in a commercial vehicle as an example, the priorities of the first, second, and third air pressure signals are set, with the air pressure signal P11 monitored by the air pressure sensor as the first air pressure signal, the instrument air pressure P12 as the second air pressure signal, and the chassis control system air pressure P13 as the third air pressure signal. The air source pressure priority setting can be programmed or programmed for offline diagnostics. In the control strategy, the priority will affect the air pressure arbitration processing result of the subsequent single loop. The controller presets the second braking system loop as follows, enabling the first air pressure signal P21, the second air pressure signal P22, and the third air pressure signal P23 with priority.

[0100] The air pressure is judged to be reasonable. a < {P11, P12, P13, P21, P22, P23} < b. Based on the preset priority results, the physical value is judged to be reasonable according to the pressure ranking of the selected dual-loop air source. a is the upper limit of the physical allowable value and b is the lower limit of the physical allowable value. The air pressure value within the above range is judged to be a valid air pressure signal.

[0101] The first braking system circuit determines air pressure arbitration processing P1. According to the arbitration control calculation method, the arbitration process includes priority validity arbitration results, reasonableness arbitration determination, etc.; the second braking system circuit determines air pressure arbitration processing P2; a dual-circuit air pressure reasonableness determination is performed |P1-P2|<λ. If the difference between the target air pressure signal P1 corresponding to the first braking system circuit and the target air pressure signal P2 corresponding to the second braking system circuit is within the preset deviation λ, the signal is valid; the vehicle air pressure value is refreshed; a fault code broadcast is recorded. At this time, the air pressure signal source is stable and the vehicle is working normally.

[0102] The commercial vehicle air source signal processing and control method proposed in this application is applicable to air source signal scenarios with dual air pressure loops in commercial vehicles. It defines a first air pressure signal, a second air pressure signal, and a third air pressure signal for each braking system loop, with preset priorities. The priority air pressure of each air source signal has an air pressure arbitration judgment algorithm. Based on signal loss and priority judgment, it ensures effective replenishment of air source pressure signals and stable operation. Based on the reasonableness and reliability judgment mechanism of the first, second, and third air pressure signals, and when the main road reference signal is significantly abnormal compared to the other two loops, the signal is judged as unreliable, and the input of a signal source with higher confidence can be switched in a timely manner to ensure the stability and authenticity of the vehicle's air source pressure signal. It has reasonableness judgment criteria, and during the software calculation process, it has an air source signal refresh mode and vehicle fault record broadcast, which can promptly remind the vehicle to perform maintenance when the vehicle is operating normally.

[0103] Figure 2 This is a schematic diagram of the hardware architecture of a vehicle air pressure signal processing system according to an embodiment of the present invention, as shown below. Figure 2 As shown, the vehicle air pressure signal processing system includes a vehicle control unit, an air pressure sensor, an instrument system, and a chassis control system. The vehicle control unit is connected to the air pressure sensor, the instrument system, and the chassis control system, respectively.

[0104] Figure 3 This is a schematic diagram illustrating a vehicle air pressure signal processing procedure according to an embodiment of the present invention, as shown below. Figure 3 As shown, the system acquires a set of air pressure signals from multiple braking system circuits of the vehicle; abnormal air pressure signals are removed from the multiple air pressure signals in the set of air pressure signals of any braking system circuit to obtain at least one retained air pressure signal; based on the at least one retained air pressure signal, the target air pressure signal corresponding to any braking system circuit is determined; based on the target air pressure signals corresponding to multiple braking system circuits, the overall vehicle air pressure monitoring result is determined.

[0105] Figure 4 This is a schematic diagram of an optional vehicle air pressure signal processing procedure according to an embodiment of the present invention, such as... Figure 4 As shown, a set of air pressure signals from multiple braking system circuits of a vehicle is obtained; abnormal air pressure signals are removed from the multiple air pressure signals in the set of air pressure signals of any braking system circuit to obtain at least one retained air pressure signal; if there are multiple signals corresponding to the at least one retained air pressure signal, the target air pressure signal corresponding to any braking system circuit is determined based on the priority of the multiple retained air pressure signals; based on the target air pressure signals corresponding to multiple braking system circuits, the overall vehicle air pressure monitoring result is determined.

[0106] Figure 5This is a schematic diagram of another optional vehicle air pressure signal processing procedure according to an embodiment of the present invention, such as... Figure 5 As shown, a set of air pressure signals from multiple braking system circuits of the vehicle is acquired; abnormal air pressure signals are removed from the set of multiple air pressure signals of any one braking system circuit, leaving at least one retained air pressure signal; if there are multiple signals corresponding to the retained at least one air pressure signal, a target air pressure signal corresponding to any one braking system circuit is determined based on the priority of the retained multiple air pressure signals; if the differences between the target air pressure signals corresponding to multiple braking system circuits are all less than a preset deviation, the vehicle air pressure monitoring result is determined to be that the air pressure status of multiple braking system circuits is normal, and the vehicle air pressure value is the average of the target air pressure signals corresponding to multiple braking system circuits; if there is a target difference greater than or equal to a preset deviation among the differences between the target air pressure signals corresponding to multiple braking system circuits, the vehicle air pressure monitoring result is determined to be that multiple braking system circuits have an air pressure deviation fault state, and a fault warning is issued based on the air pressure deviation fault state.

[0107] According to another aspect of the present invention, a vehicle air pressure signal processing device is also provided. This device can execute the vehicle air pressure signal processing method of the above embodiments. The specific implementation method and preferred application scenarios are the same as those of the above embodiments, and will not be repeated here.

[0108] Figure 6 This is a schematic diagram of a vehicle air pressure signal processing device according to an embodiment of this application, as shown below. Figure 6 As shown, the device includes the following: an acquisition module 602, a first determination module 604, and a second determination module 606.

[0109] The acquisition module 602 is used to acquire a set of air pressure signals from multiple braking system circuits of the vehicle, wherein the multiple air pressure signals in the air pressure signal set are determined by multiple signal sources; the first determination module 604 is used to determine the target air pressure signal corresponding to the multiple braking system circuits based on the set of air pressure signals from the multiple braking system circuits; and the second determination module 606 is used to determine the vehicle air pressure monitoring result based on the target air pressure signal corresponding to the multiple braking system circuits.

[0110] The first determining module is further configured to remove abnormal air pressure signals from multiple air pressure signals in the air pressure signal set of any braking system circuit to obtain at least one retained air pressure signal; and to determine the target air pressure signal corresponding to any braking system circuit based on the at least one retained air pressure signal.

[0111] The first determining module is further configured to, based on a preset normal air pressure signal range, remove a first abnormal air pressure signal from a plurality of air pressure signals to obtain a plurality of filtered air pressure signals, wherein the first abnormal air pressure signal is used to represent an air pressure signal that exceeds the preset normal air pressure signal range; and remove a second abnormal air pressure signal from the plurality of filtered air pressure signals to obtain at least one retained air pressure signal, wherein the difference between the second abnormal air pressure signal and the other air pressure signals in the plurality of air pressure signals is greater than a preset air pressure difference.

[0112] In the case where there are multiple signals corresponding to at least one retained air pressure signal, the first determining module is further configured to determine the target air pressure signal corresponding to any braking system circuit based on the priority of the multiple retained air pressure signals.

[0113] The multiple air pressure signals include at least two of the following: a first air pressure signal, a second air pressure signal, and a third air pressure signal. The first air pressure signal represents the air pressure signal of the braking system circuit monitored by the air pressure sensor. The second air pressure signal represents the air pressure signal of the braking system circuit fed back by the instrument system. The third air pressure signal represents the air pressure signal of the braking system circuit fed back by the chassis control system. The priority of the first air pressure signal is greater than the priority of the second air pressure signal, and the priority of the second air pressure signal is greater than the priority of the third air pressure signal.

[0114] The second determining module is further configured to determine the vehicle air pressure monitoring result as normal air pressure status of multiple braking system circuits and the vehicle air pressure value as the average value of the target air pressure signals corresponding to multiple braking system circuits when the difference between the target air pressure signals corresponding to multiple braking system circuits is less than a preset deviation.

[0115] The second determining module is further configured to determine the vehicle air pressure monitoring result as an air pressure deviation fault state in multiple braking system circuits when there is a target difference greater than or equal to a preset deviation among the differences between the target air pressure signals corresponding to multiple braking system circuits, and to issue a fault warning based on the air pressure deviation fault state.

[0116] Embodiments of this application also provide a vehicle, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods of various embodiments of the present invention during runtime.

[0117] The aforementioned memory can refer to devices inside a computer used to store data and programs, including RAM, hard disks, etc. RAM can be used to temporarily store running programs and data, while hard disks can be used to store programs and data long-term. Memory enables the computer to read and write data and execute programs. The aforementioned processor is responsible for executing instructions in computer programs and performing data processing. It can also be responsible for controlling and executing various operations, including arithmetic operations, logical operations, and data transmission.

[0118] Embodiments of this application also provide a computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0119] The aforementioned computer storage media can refer to the media used in computer memory to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser discs, etc. Computer-readable storage media include stored programs, which can be a set of instructions that a computer can recognize and execute, running on an electronic computer to meet certain information needs.

[0120] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0121] The aforementioned computer program products can refer to software programs that have been written, tested, and released, and can run on computers or other devices. Computer program products can include application programs, operating systems, utility software, etc., used to achieve specific functions or solve specific problems.

[0122] Embodiments of this application also provide a computer program product, including a non-volatile computer-readable storage medium for storing a computer program that, when executed by a processor, implements the methods in various embodiments of the present invention.

[0123] The aforementioned non-volatile computer-readable storage medium can refer to a medium for storing data. Non-volatile computer-readable storage media can retain data without loss when power is off and can be used to store long-term data, such as operating systems, applications, and user files. Non-volatile storage media can include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0124] Embodiments of this application also provide a computer program that, when executed by a processor, implements the methods described in the various embodiments of the present invention.

[0125] The aforementioned computer program can refer to a set of instructions used to tell the computer to perform specific tasks or operations. Computer programs can be written by programmers using specific programming languages ​​and can include algorithms, data structures, logic, and control flow. Computer programs can be used for a variety of purposes, including application software, operating systems, etc.

[0126] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0127] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection can be through some interfaces; the indirect coupling or communication connection between units or modules can be electrical or other forms.

[0128] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0129] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0130] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0131] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for processing vehicle air pressure signals, characterized in that, include: Acquire a set of air pressure signals from multiple braking system circuits of a vehicle, wherein the multiple air pressure signals in the set of air pressure signals are determined by multiple signal sources; Based on the set of air pressure signals of the multiple braking system circuits, the target air pressure signal corresponding to the multiple braking system circuits is determined; Based on the target air pressure signals corresponding to the multiple braking system circuits, the vehicle air pressure monitoring results are determined.

2. The method for processing vehicle air pressure signals according to claim 1, characterized in that, Based on the set of air pressure signals from the multiple braking system circuits, the target air pressure signal corresponding to the multiple braking system circuits is determined, including: Abnormal air pressure signals are removed from the set of air pressure signals in any braking system circuit, leaving at least one retained air pressure signal. Based on the at least one retained air pressure signal, determine the target air pressure signal corresponding to any one of the braking system circuits.

3. The method for processing vehicle air pressure signals according to claim 2, characterized in that, Abnormal air pressure signals are removed from the set of air pressure signals in any braking system circuit, leaving at least one retained air pressure signal, including: Based on a preset normal air pressure signal range, the first abnormal air pressure signal among the plurality of air pressure signals is removed to obtain a plurality of filtered air pressure signals, wherein the first abnormal air pressure signal is used to represent an air pressure signal that exceeds the preset normal air pressure signal range. The second abnormal air pressure signal is removed from the multiple air pressure signals after screening to obtain at least one retained air pressure signal, wherein the difference between the second abnormal air pressure signal and the other air pressure signals among the multiple air pressure signals is greater than a preset air pressure difference.

4. The method for processing vehicle air pressure signals according to claim 2, characterized in that, When there are multiple signals corresponding to the at least one retained air pressure signal, determining the target air pressure signal corresponding to any one of the braking system circuits based on the at least one retained air pressure signal includes: Based on the priority of the multiple retained air pressure signals, the target air pressure signal corresponding to any one of the braking system circuits is determined.

5. The method for processing vehicle air pressure signals according to any one of claims 1 to 4, characterized in that, The plurality of air pressure signals includes at least two of the following: a first air pressure signal, a second air pressure signal, and a third air pressure signal. The first air pressure signal represents the air pressure signal of the braking system circuit monitored by the air pressure sensor. The second air pressure signal represents the air pressure signal of the braking system circuit fed back by the instrument system. The third air pressure signal represents the air pressure signal of the braking system circuit fed back by the chassis control system. The priority of the first air pressure signal is greater than the priority of the second air pressure signal, and the priority of the second air pressure signal is greater than the priority of the third air pressure signal.

6. The method for processing vehicle air pressure signals according to any one of claims 1 to 4, characterized in that, Based on the target air pressure signals corresponding to the multiple braking system circuits, the vehicle's overall air pressure monitoring results are determined, including: If the difference between the target air pressure signals corresponding to the multiple braking system circuits is less than the preset deviation, the vehicle air pressure monitoring result is determined to be that the air pressure status of the multiple braking system circuits is normal, and the vehicle air pressure value is the average value of the target air pressure signals corresponding to the multiple braking system circuits.

7. The method for processing vehicle air pressure signals according to claim 6, characterized in that, The method further includes: If, among the differences between the target air pressure signals corresponding to the multiple braking system circuits, there exists a target difference greater than or equal to the preset deviation, the vehicle air pressure monitoring result is determined to be an air pressure deviation fault state in the multiple braking system circuits, and a fault warning is issued based on the air pressure deviation fault state.

8. A device for processing vehicle air pressure signals, characterized in that, include: The acquisition module is used to acquire a set of air pressure signals from multiple braking system circuits of the vehicle, wherein the multiple air pressure signals in the set of air pressure signals are determined by multiple signal sources; The first determining module is used to determine the target air pressure signal corresponding to the plurality of braking system circuits based on the set of air pressure signals of the plurality of braking system circuits; The second determining module is used to determine the vehicle air pressure monitoring result based on the target air pressure signals corresponding to the multiple braking system circuits.

9. A vehicle, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the vehicle air pressure signal processing method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device on which the storage medium is located to perform the vehicle air pressure signal processing method according to any one of claims 1 to 7.

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