Vehicle tire pressure active adjustment system, abnormality detection method, controller and vehicle

Abstract

The application discloses a vehicle tire pressure active adjustment system and an abnormality detection method, a controller and a vehicle thereof. The abnormality detection method of the vehicle tire pressure active adjustment system comprises the following steps: controlling a gas source and a gas valve module to obtain at least one of a gas pressure in a to-be-detected gas path section and a corresponding tire pressure, wherein the tire pressure active adjustment system comprises the gas source and the gas valve module, and the gas valve module is arranged on a gas path between the gas source and each tire; and detecting an abnormality of the tire pressure active adjustment system according to at least one of the gas pressure in the to-be-detected gas path section and the corresponding tire pressure. Thus, the method controls the gas source and the gas valve module according to a detection instruction, and detects the abnormality of the tire pressure active adjustment system according to at least one of the gas pressure in the to-be-detected gas path section and the corresponding tire pressure, so that the self-detection of the tire pressure active adjustment system is realized, and the active and effective management of the tire pressure active adjustment system on the tires of the vehicle wheels is ensured.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to an anomaly detection method for a vehicle active tire pressure regulation system, a controller, a vehicle active tire pressure regulation system, and a vehicle. Background Technology

[0002] With the rapid development of the automotive industry, people's requirements for vehicle safety and driving experience have also increased. Tire pressure is particularly important for vehicle driving safety and driving comfort.

[0003] For vehicle tire pressure management, relevant technologies utilize active tire pressure regulation systems (TPMS) to proactively adjust tire pressure. However, to ensure the system's effectiveness, regular manual checks are required, increasing maintenance costs and impacting user experience.

[0004] Application content

[0005] This application aims to at least partially address one of the technical problems in the related art. Therefore, the first objective of this application is to propose an anomaly detection method for a vehicle active tire pressure regulation system. This method detects anomalies in the active tire pressure regulation system based on at least one of the air pressure in the air passage to be detected and the corresponding tire pressure, thereby achieving autonomous detection of the system and ensuring its operational reliability.

[0006] The second objective of this application is to propose a controller.

[0007] The third objective of this application is to propose an active tire pressure regulation system for vehicles.

[0008] The fourth objective of this application is to propose a vehicle.

[0009] To achieve the above objectives, the first aspect of this application proposes an anomaly detection method for a vehicle tire pressure active regulation system, comprising: controlling an air source and an air valve module to obtain at least one of the air pressure in the air passage to be detected and the corresponding tire pressure, wherein the tire pressure active regulation system includes an air source and an air valve module, the air valve module being disposed in the air passage between the air source and each tire; and detecting anomalies in the tire pressure active regulation system based on at least one of the air pressure in the air passage to be detected and the corresponding tire pressure.

[0010] The method for detecting anomalies in a vehicle active tire pressure regulation system according to an embodiment of this application controls an air source and an air valve module to obtain at least one of the air pressure in the air passage to be detected and the corresponding tire pressure. The active tire pressure regulation system includes an air source and an air valve module, with the air valve module disposed in the air passage between the air source and each tire. The method detects anomalies in the active tire pressure regulation system based on at least one of the air pressure in the air passage to be detected and the corresponding tire pressure. This method controls the air source and air valve module according to a detection command and detects anomalies in the active tire pressure regulation system based on at least one of the obtained air pressure in the air passage to be detected and the corresponding tire pressure. This achieves autonomous detection of the active tire pressure regulation system, ensuring that the system can actively and effectively manage the wheels and tires, while reducing maintenance costs and improving user experience.

[0011] In addition, the abnormality detection method of the vehicle tire pressure active regulation system according to the above embodiments of this application may also have the following additional technical features:

[0012] According to one embodiment of this application, controlling an air source and an air valve module to obtain at least one of the air pressure in the air passage to be tested and the corresponding tire pressure includes: controlling the air source to start or stop, and controlling the opening or closing of multiple valves in the air valve module to make the air passage to be tested include a central air passage, obtaining the air pressure in the air passage to be tested by detecting the air pressure in the central air passage, and / or obtaining the tire pressure of the corresponding tire through a tire pressure monitoring module.

[0013] According to one embodiment of this application, controlling the gas source and the gas valve module includes: controlling the gas source to start, controlling the inflation valve in the gas valve module to open, and keeping the control valve in the gas valve module in a closed state, wherein the gas source is connected to the central gas path through the inflation valve to form the gas path segment to be tested;

[0014] The tire pressure active regulation system detects abnormalities based on at least one of the air pressure in the air circuit section to be tested and the corresponding tire pressure, including: if the air pressure in the air circuit is less than the first preset pressure value after the air source has been working for a first preset time, then it is determined that the system has an abnormal air source pressure.

[0015] According to one embodiment of this application, after detecting whether the gas source pressure of the system is abnormal, the gas source and gas valve module are controlled, including: controlling the gas source and the inflation valve to close, and keeping the control valve in the closed state, with the central gas path being the gas path segment to be detected;

[0016] The active tire pressure regulation system detects abnormalities based on at least one of the air pressure in the air circuit section to be tested and the tire pressure, including: determining the air pressure change value in the air circuit section to be tested; and determining that a central air circuit abnormality has occurred when the air pressure change value in the air circuit section to be tested exceeds a preset pressure threshold.

[0017] According to one embodiment of this application, when the corresponding tire is inflated, the air source and the air valve module are controlled to obtain at least one of the air pressure in the air passage to be tested and the tire pressure of the corresponding tire, including: controlling the air source to start and controlling the inflation valve to open so that the safety valve of the corresponding tire is opened, and the air source, the central air passage and the corresponding tire are sequentially connected to form the air passage to be tested.

[0018] The tire pressure active regulation system detects abnormal conditions based on at least one of the air pressure in the air passage to be detected and the tire pressure, including: when the tire pressure change of the corresponding tire is less than a preset tire pressure change threshold, and / or when the air pressure in the air passage to be detected is greater than a second preset pressure value and lasts for a second preset time, determining that the system has an inflation abnormality.

[0019] According to one embodiment of this application, when the corresponding tire is deflated, the air source and air valve module are controlled, including: controlling the safety valve, control valve and deflation valve to open, so that the tire, central air passage and deflation passage are connected in sequence, and the tire is deflated, and the two ends of the deflation passage are connected to the central air passage and the atmosphere respectively.

[0020] The system detects abnormal conditions of the active tire pressure regulation system based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: determining that the system has bleed abnormally when the tire pressure change of the corresponding tire is less than a first preset tire pressure change threshold.

[0021] According to one embodiment of this application, controlling the air source and air valve module to obtain at least one of the air pressure in the air passage section to be tested and the tire pressure of the corresponding tire includes: after inflation or deflation is completed, maintaining the pressure of the corresponding tire, and controlling the pressure maintaining valve to close after the pressure maintaining is completed. The inlet of the pressure maintaining valve is connected to the central air passage, and the outlet of the pressure maintaining valve is adapted to be connected to the atmosphere. The central air passage is connected to the branch of the corresponding tire to form the air passage section to be tested.

[0022] The tire pressure active regulation system detects abnormalities based on at least one of the air pressure in the air circuit section to be tested and the tire pressure, including: determining that the system has a pressure holding abnormality when the air pressure in the air circuit section to be tested is greater than a third preset pressure value.

[0023] According to one embodiment of this application, during system self-test, controlling the air source and air valve module includes: controlling the air source to start, controlling the air valve module to open the inflation passage, the inflation passage being used to inflate the tire; when the inflation time of the corresponding tire reaches a first preset inflation time, controlling the air source and inflation valve to close, and keeping the control valve and safety valve of the corresponding tire in the open state, so that the tire is connected to the central air passage to form the air passage segment to be tested;

[0024] The active tire pressure regulation system detects abnormalities based on at least one of the air pressure in the air circuit to be tested and the tire pressure, including: obtaining the pressure difference between the air pressure in the air circuit to be tested and the tire pressure; and determining that the safety valve of the corresponding tire has malfunctioned when the pressure difference is greater than or equal to a preset pressure difference threshold.

[0025] According to one embodiment of this application, after determining that the safety valve of the corresponding tire is normally open, controlling the air source and air valve module includes: controlling the control valve of the corresponding tire to close.

[0026] The system detects abnormalities in the active tire pressure regulation system based on at least one of the air pressure in the air circuit section to be tested and the tire pressure, including: determining the amount of tire pressure change of the corresponding tire; and determining that the corresponding tire has an abnormal wheel-side circuit sealing when the amount of tire pressure change is greater than or equal to a second preset tire pressure change threshold.

[0027] According to one embodiment of this application, after each tire completes the wheel-side circuit sealing abnormality detection, the air source and air valve module are controlled, including: controlling the control valve and the vent valve of the corresponding tire to open.

[0028] The system detects abnormalities in the active tire pressure regulation system based on at least one of the air pressure in the air circuit section to be tested and the tire pressure, including: determining the amount of tire pressure change of the corresponding tire; and determining that the deflation circuit of the corresponding tire is abnormal when the amount of tire pressure change is less than a third preset tire pressure change threshold.

[0029] According to one embodiment of this application, after the deflation circuit of the corresponding tire has been tested, the air source and air valve module are controlled, including: controlling the deflation valve to close and keeping the control valve of the corresponding tire in the open state, and controlling the pressure holding valve to open for a third preset time and then close it, so that the central air circuit and the branch circuit of the corresponding tire are connected to form the air circuit segment to be tested.

[0030] The tire pressure active regulation system is tested for abnormalities based on at least one of the air pressure in the air circuit to be tested and the tire pressure, including: when the air pressure in the air circuit to be tested is greater than or equal to a fourth preset pressure value, the pressure holding circuit of the corresponding tire is determined to be abnormal.

[0031] To achieve the above objectives, a second aspect of this application provides a controller, including a memory, a processor, and an anomaly detection program for an active tire pressure regulation system stored in the memory and executable on the processor. When the processor executes the anomaly detection program for the active tire pressure regulation system, the above-described anomaly detection method for the active tire pressure regulation system is implemented.

[0032] According to the controller in this application embodiment, when the processor executes the abnormal detection program of the vehicle tire pressure active regulation system, it implements the above-mentioned abnormal detection method of the vehicle tire pressure active regulation system. It detects abnormalities in the tire pressure active regulation system based on at least one of the obtained air pressure in the air passage to be detected and the corresponding tire pressure, thereby realizing autonomous detection of the tire pressure active regulation system to ensure that the tire pressure active regulation system can achieve active and effective management of the wheels and tires.

[0033] To achieve the above objectives, a third aspect of this application provides a vehicle tire pressure active adjustment system, comprising: an air source and an air valve module, the air valve module being disposed in the air path between the air source and the tire; a tire pressure monitoring module for monitoring tire pressure; an air pressure sensor for detecting air pressure in the air path section to be detected; and an anomaly detection controller, the anomaly detection controller being the aforementioned controller.

[0034] According to the vehicle tire pressure active regulation system of this application embodiment, the air valve module is set in the air line between the air source and the tire, the tire pressure is monitored by the tire pressure monitoring module, the air pressure in the air line section to be detected is detected by the air pressure sensor, and the abnormality detection controller is the aforementioned controller. Based on the aforementioned controller, the abnormality of the tire pressure active regulation system is detected according to at least one of the obtained air pressure in the air line section to be detected and the corresponding tire pressure, thereby realizing the autonomous detection of the tire pressure active regulation system to ensure that the tire pressure active regulation system can realize active and effective management of the wheels and tires.

[0035] To achieve the above objectives, a third aspect of this application provides a vehicle including the aforementioned active tire pressure regulation system.

[0036] The vehicle in this embodiment of the application, based on the above-mentioned active tire pressure regulation system, detects abnormalities in the active tire pressure regulation system by acquiring at least one of the air pressure in the air passage to be detected and the corresponding tire pressure, thereby realizing autonomous detection of the active tire pressure regulation system to ensure that the active tire pressure regulation system can achieve active and effective management of the wheels and tires.

[0037] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0038] Figure 1 This is a flowchart of an anomaly detection method for a vehicle tire pressure active regulation system according to an embodiment of this application;

[0039] Figure 2 This is a connection diagram of a vehicle tire pressure active regulation system according to an embodiment of this application;

[0040] Figure 3 This is a block diagram of a controller according to an embodiment of the present application;

[0041] Figure 4 This is a block diagram of a vehicle tire pressure active regulation system according to an embodiment of this application;

[0042] Figure 5 This is a block diagram of a vehicle according to one embodiment of the present application. Detailed Implementation

[0043] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0044] The following description, with reference to the accompanying drawings, outlines an abnormality detection method, controller, active tire pressure regulation system, and vehicle according to embodiments of this application.

[0045] Figure 1 This is a flowchart of an anomaly detection method for a vehicle tire pressure active adjustment system according to an embodiment of this application.

[0046] Reference Figure 1 As shown, the abnormality detection method of the vehicle's active tire pressure regulation system may include the following steps:

[0047] S1, control the air source and air valve module to obtain at least one of the air pressure in the air circuit section to be detected and the corresponding tire pressure, wherein the tire pressure active adjustment system includes an air source and an air valve module, and the air valve module is set in the air circuit between the air source and each tire.

[0048] S2, detect abnormalities in the active tire pressure regulation system based on at least one of the air pressure in the air passage to be tested and the corresponding tire pressure.

[0049] See Figure 2 As shown, the valve module 20 is located in the air path between the air source 10 and the tire 30. When the valve module 20 is open, the air path between the air source 10 and the corresponding tire 30 is open. At this time, the air source 10 can output compressed gas to the tire 30 through the air path to inflate the tire 30. It can be understood that the valve module 20 includes multiple valves, which are respectively located in the air path between the air source 10 and each tire 30 of the vehicle. Thus, the active tire pressure regulation system can control the air source 10 and the valve module 20 to realize pressure regulation actions such as inflation, deflation, and pressure maintenance of the corresponding tire 30, while also completing the abnormal detection of the system.

[0050] Specifically, after receiving the corresponding abnormality detection command, the controller of the active tire pressure regulation system controls the air source and valve module in response to the received abnormality detection command, thereby controlling the opening of the corresponding air circuit and performing abnormality detection.

[0051] During anomaly detection, the air pressure in the corresponding air passage can be obtained through a pressure sensor, and the tire pressure of the corresponding tire can be obtained through a tire pressure detection sensor installed on the corresponding tire. Then, based on the air pressure in the corresponding air passage, or based on the tire pressure of the corresponding tire, or based on both the air pressure in the corresponding air passage and the tire pressure of the corresponding tire, it is confirmed whether the active tire pressure regulation system is abnormal, thereby detecting abnormal conditions in the active tire pressure regulation system.

[0052] This method controls the air source and air valve module based on the corresponding anomaly detection command, and autonomously detects abnormalities in the active tire pressure regulation system based on the air pressure in the air circuit section to be detected and / or the corresponding tire pressure, so as to ensure that the active tire pressure regulation system can achieve active and effective management of the wheels and tires.

[0053] It should be noted that the aforementioned anomaly detection commands can be power-on self-test commands, air circuit detection commands, etc., without limitation. The anomaly detection commands correspond to system anomalies, which can include air source anomalies, central air circuit anomalies, inflation / deflation anomalies, wheel-side circuit sealing anomalies, etc. The controller can pre-store control programs corresponding to the respective anomaly detection commands. When the controller receives an anomaly detection command, it can call the corresponding control program according to the command, and simultaneously confirm the judgment conditions and parameters required for anomaly judgment. During the control of the air source and valve module, the corresponding judgment parameter data is acquired, thereby judging the anomaly of the active tire pressure regulation system. In other words, for different anomaly detection commands, the corresponding system anomaly can be detected based solely on the air pressure in the air circuit section to be tested, or solely on the tire pressure of the corresponding tire, or the anomaly of the active tire pressure regulation system can be determined by combining the air pressure in the air circuit section to be tested and the tire pressure of the corresponding tire.

[0054] Furthermore, the aforementioned anomaly detection method can be initiated automatically upon vehicle power-on, tire pressure monitoring system power-on, or after the tire pressure monitoring system completes the corresponding tire pressure adjustment action, or it can be confirmed based on the received anomaly detection command. Correspondingly, the air passage to be detected and the corresponding tire during the anomaly detection process can be confirmed according to the program settings of the tire pressure monitoring system, or selected based on the received anomaly detection command.

[0055] In one embodiment of this application, controlling an air source and an air valve module to obtain at least one of the air pressure in the air passage to be tested and the tire pressure of the corresponding tire includes: controlling the air source to start or stop, and controlling the opening or closing of multiple valves in the air valve module to make the air passage to be tested include a central air passage, obtaining the air pressure in the air passage to be tested by detecting the air pressure in the central air passage, and / or obtaining the tire pressure of the corresponding tire through a tire pressure monitoring module.

[0056] The air circuit includes a central air circuit and multiple branch circuits corresponding to each tire. The central air circuit is connected to each tire via these branch circuits. Specifically, the air outlet of the air source is connected to one end of the central air circuit, the other end of the central air circuit is connected to one end of each of the branch circuits, and the other ends of each branch circuit are connected to the interior of the corresponding tire. The air valve module includes an inflation valve located on the central air circuit and control valves located on each of the corresponding branch circuits.

[0057] During the anomaly detection process of the active tire pressure regulation system, the corresponding valves in the air source and air valve module are controlled according to the anomaly to be detected. The air pressure of the central air path obtained by the air pressure sensor is used as the air pressure of the air path section to be detected, and the tire internal pressure obtained by the tire pressure monitoring sensor in the tire pressure monitoring module set for the corresponding tire is used as the tire pressure.

[0058] In one embodiment of this application, controlling the air source and air valve module includes: controlling the air source to start, controlling the inflation valve in the air valve module to open, and keeping the control valve in the air valve module in a closed state. The air source is connected to the central air circuit via the inflation valve to form a test air circuit segment. Detecting abnormalities in the active tire pressure regulation system based on at least one of the air pressure in the test air circuit segment and the corresponding tire pressure includes: after the air source has been operating for a first preset time, if the air pressure in the air circuit is less than a first preset pressure value, then determining that the system has experienced an air source pressure abnormality. The first preset time and the first preset pressure value can be set according to actual conditions.

[0059] Specifically, taking a first preset pressure value of 10 Bar and a first preset time of 3 seconds as an example, the controller of the tire pressure active regulation system controls the air source to start, and controls the inflation valve set between the air outlet of the air source and the central air path to open, and controls the control valve set between the central air path and each branch to close. At this time, the compressed air output by the air source exists only in the central air path, and the air pressure of the central air path is obtained in real time through the air pressure sensor.

[0060] If the air pressure in the central air circuit is less than 10 Bar 3 seconds after the air source outputs compressed air, the system is considered to have an abnormal air source pressure; if the air pressure in the central air circuit is greater than or equal to 10 Bar, the system is considered to have a normal air source pressure.

[0061] In one embodiment of this application, after detecting whether the air source pressure of the system is abnormal, the air source and air valve module are controlled, including: closing the air source and inflation valve, and keeping the control valve in a closed state, with the central air path being the air path segment to be detected. The abnormality of the active tire pressure regulation system is detected based on at least one of the air pressure in the air path segment to be detected and the tire pressure, including: determining the air pressure change value in the air path segment to be detected; and determining that a central air path abnormality has occurred when the air pressure change value in the air path segment to be detected exceeds a preset pressure threshold. The preset pressure threshold can be set according to actual conditions.

[0062] Specifically, after completing the abnormal gas source pressure detection, the controller keeps both the gas source and the valve module in a closed state. At this time, both ends of the central gas path are in a shut-off state, and the high-pressure gas introduced during the abnormal gas source pressure detection process is sealed in the central gas path. The gas pressure in the central gas path is continuously collected by a pressure sensor for 5 seconds. If the change in gas pressure in the central gas path within 5 seconds is greater than a preset pressure threshold, it is determined that an abnormality has occurred in the central gas path. If the change in gas pressure in the central gas path within 5 seconds is less than or equal to the preset pressure threshold, it is determined that the central gas path is normal. It should be noted that the above 5-second time limit is only one possible implementation method of this application, and the specific implementation can be set according to the actual situation, which is not limited here.

[0063] Therefore, in the process of detecting abnormalities in the gas source pressure and central gas path in the system, the corresponding abnormality detection process can be achieved simply by measuring the gas pressure of the gas path section to be tested.

[0064] In one embodiment of this application, when inflating a corresponding tire, controlling the air source and air valve module to obtain at least one of the air pressure in the air passage to be detected and the tire pressure of the corresponding tire includes: controlling the air source to start and controlling the inflation valve to open, so that the safety valve of the corresponding tire opens, and the air source, central air passage and corresponding tire are sequentially connected to form the air passage to be detected. An abnormality in the active tire pressure regulation system is detected based on at least one of the air pressure in the air passage to be detected and the tire pressure, including: determining that an inflation abnormality has occurred when the tire pressure change of the corresponding tire is less than a preset tire pressure change threshold, and / or when the air pressure in the air passage to be detected is greater than a second preset pressure value and lasts for a second preset time. The preset tire pressure change threshold, the second preset pressure, and the second preset time can be set according to actual conditions.

[0065] Specifically, taking the active tire pressure regulation system for inflating the left front tire of a vehicle as an example, the preset tire pressure change threshold is 8 kPa, the second preset pressure is 10 Bar, and the second preset time is 3 seconds.

[0066] When the active tire pressure regulation system inflates the left front tire, the air source is activated and the inflation valve is opened. The compressed air output from the air source passes through the inflation valve into the central air circuit, and then through the branch corresponding to the left front tire to reach the safety valve of the left front tire. The safety valve is an air-controlled valve that opens under the pressure of the compressed gas, thereby allowing the compressed gas output from the air source to flow into the left front tire and inflate it.

[0067] During the inflation of the left front tire, the air source, central air passage, and left front tire are sequentially connected to form the inflation air passage, i.e., the air passage section to be tested. The air pressure in this section is acquired in real time by a pressure sensor, and the tire pressure monitoring sensor collects the tire pressure of the left front tire in real time. An inflation anomaly is determined when the tire pressure change of the left front tire within 2 minutes is less than 8 kPa. Alternatively, an inflation anomaly is determined when the air pressure in the air passage section exceeds 10 Bar for 3 consecutive seconds. Or, an inflation anomaly is determined when the tire pressure change of the left front tire within 2 minutes is less than 8 kPa, and the air pressure in the air passage section exceeds 10 Bar for 3 consecutive seconds. The specific judgment conditions can be limited according to the actual situation, and are not restricted here. It is understood that using the tire pressure change of the left front tire within 2 minutes as the judgment standard is only one possible implementation method of this application; for example, the tire pressure change could also be the tire pressure change within 1 second, etc.

[0068] In addition, if an inflation malfunction is detected in the system, the inflation of the corresponding tire will be stopped. Otherwise, if no inflation malfunction is detected in the system, the inflation of the corresponding tire will continue according to the preset program until inflation is completed.

[0069] In this embodiment, during the detection of inflation abnormalities, the inflation abnormality can be determined based solely on the tire pressure, the air pressure in the inflation circuit, or a combination of both.

[0070] In one embodiment of this application, when a corresponding tire is deflated, the air source and air valve module are controlled, including: opening a safety valve, a control valve, and a deflation valve to sequentially connect the tire, the central air passage, and the deflation passage, and deflating the tire. The two ends of the deflation passage are respectively connected to the central air passage and the atmosphere. An abnormality in the active tire pressure regulation system is detected based on at least one of the air pressure in the air passage to be detected and the tire pressure, including: determining that a deflation abnormality has occurred when the tire pressure change of the corresponding tire is less than a first preset tire pressure change threshold. The first preset tire pressure change threshold can be set according to actual conditions.

[0071] Specifically, the tire pressure adjustment system continues to deflate the left front tire, with the first preset tire pressure change threshold being 8 kPa.

[0072] When the active tire pressure regulation system deflates the left front tire, the controller activates the air supply, opening the inflation valve. This allows the control valve of the left front tire to open under the pressure of compressed air supplied by the air supply. Then, the controller opens the deflation valve, closing the inflation valve and air supply. At this point, the left front tire, the central air passage, and the deflation channel are sequentially connected, allowing air to be released from the left front tire. The deflation valve in the deflation channel is a slow-release valve, allowing the air in the left front tire to slowly escape to the atmosphere. This ensures that the pressure difference across the safety valve of the left front tire remains almost constant during the deflation process, thus keeping the safety valve of the left front tire open and enabling deflation of the left front tire.

[0073] During the deflation of the left front tire, the tire pressure monitoring sensor corresponding to the left front tire collects the tire pressure and determines the amount of tire pressure change based on the collected data. If the tire pressure change of the left front tire within 2 minutes is less than 8 kPa, an abnormal deflation is determined, and the deflation operation of the left front tire is stopped; otherwise, it is assumed that there is no abnormality, and the deflation operation of the left front tire continues until the deflation is completed. It should be noted that the aforementioned 2 minutes is only one possible implementation method in this application, used as a time interval to confirm the tire pressure change, and the specific time can be set by the user.

[0074] In one embodiment of this application, controlling the air source and air valve module to obtain at least one of the air pressure in the air passage to be tested and the corresponding tire pressure includes: after inflation or deflation, maintaining pressure on the corresponding tire, and controlling the pressure-maintaining valve to close after pressure maintenance. The inlet of the pressure-maintaining valve is connected to the central air passage, and the outlet of the pressure-maintaining valve is adapted to be connected to the atmosphere. The central air passage is connected to the branch passage of the corresponding tire to form the air passage to be tested. An abnormality in the active tire pressure regulation system is detected based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: determining that a pressure maintenance abnormality has occurred when the air pressure in the air passage to be tested is greater than a third preset pressure value. The third preset pressure value can be set according to actual conditions.

[0075] Specifically, taking the inflation or deflation of the left front tire as an example, when inflating the left front tire, once the tire pressure reaches the set value, the air pump is shut off, the inflation valve is closed, and the pressure holding valve is opened. The left front tire, its safety valve, the central air passage, and the pressure holding valve are sequentially connected, rapidly connecting the system's air passage to the atmosphere for rapid depressurization. The left front tire's safety valve then resets and closes under the pressure. After the safety valve closes, the pressure holding valve closes, completing the pressure holding process after inflating the left front tire. When deflation of the left front tire, once the tire pressure reaches the set deflation value, the deflation valve closes, and the pressure holding valve opens, rapidly connecting the system's air passage to the atmosphere for rapid depressurization. The left front tire's safety valve closes under the pressure. After the safety valve closes, the pressure holding valve closes, completing the pressure holding process after deflation of the left front tire.

[0076] Assuming the third preset pressure value is 10 kPa, after the system closes the pressure-holding valve, the air pressure sensor collects the pressure in the air circuit corresponding to the left front tire. When the pressure in the air circuit collected by the air pressure sensor is greater than 10 kPa, it is determined that the system has experienced a pressure-holding abnormality. When the pressure in the air circuit collected by the air pressure sensor is less than or equal to 10 kPa, it is determined that the system's pressure-holding is normal.

[0077] In one embodiment of this application, during system self-testing, controlling the air source and valve module includes: controlling the air source to start, controlling the valve module to open the inflation passage for inflating the tire; when the inflation time of the corresponding tire reaches a first preset inflation time, controlling the air source and inflation valve to close, while keeping the control valve and safety valve of the corresponding tire open, so that the tire is connected to the central air passage to form the air passage to be tested. Anomalies in the active tire pressure regulation system are detected based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: acquiring the pressure difference between the air pressure in the air passage to be tested and the tire pressure; when the pressure difference is greater than or equal to a preset pressure difference threshold, determining that the safety valve of the corresponding tire has opened abnormally. The first preset inflation time and the preset pressure difference threshold can be set according to actual conditions.

[0078] The driver issues a system self-check command to the system via the instrument panel or multimedia control screen. The system performs a self-check, which mainly targets and locates abnormal points in the air circuit.

[0079] Taking the abnormal detection of the safety valve of the left front wheel tire as an example, the opening and closing status of the safety valve of the left front wheel tire is first detected.

[0080] Assuming a preset inflation time of 1.5 seconds and a preset pressure difference threshold of 10 kPa, specifically, the left front tire is first inflated. After 1.5 seconds of inflation, the air source is shut off while the inflation valve remains open. At this time, the high-pressure gas is normally sealed within the space between the inflation valve, the central air path, the corresponding branch of the left front tire, the safety valve of the left front tire, and the left front tire. The air pressure sensor detects the air pressure in the section of the air path connected to the central air path, while the tire pressure monitoring sensor of the left front tire acquires its pressure. The pressure difference between the air pressure in the section of the air path and the tire pressure of the left front tire is calculated. If the pressure difference is greater than or equal to 10 kPa, the safety valve of the left front tire is determined to be abnormally open; if the pressure difference is less than 10 kPa, the safety valve of the left front tire is determined to be open normally.

[0081] In one embodiment of this application, after determining that the safety valve of the corresponding tire is normally open, controlling the air source and the air valve module includes: controlling the control valve of the corresponding tire to close. Detecting abnormalities in the active tire pressure regulation system based on at least one of the air pressure in the air circuit to be detected and the tire pressure includes: determining the amount of tire pressure change of the corresponding tire; and determining that the corresponding tire has a wheel-side circuit sealing abnormality when the tire pressure change is greater than or equal to a second preset tire pressure change threshold. The second preset tire pressure change threshold can be set according to actual conditions.

[0082] Continuing with the example of inspecting the left front tire, after confirming that the safety valve of the left front tire is open normally, the sealing performance of the wheel edge circuit of the left front tire is tested. It should be noted that the air valve module has control valves installed between the branch circuit and the central air circuit to achieve selective connection or disconnection between the central air circuit and the branch circuit.

[0083] Specifically, assuming the second preset tire pressure change threshold is 8 kPa, after confirming that the safety valve of the left front tire is open normally, the control valve corresponding to the left front tire is closed. At this time, the high-pressure gas is sealed within the space of the control valve of the left front tire - the branch circuit of the left front tire - the safety valve of the left front tire - the left front tire. The tire pressure monitoring sensor of the left front tire acquires the tire pressure. If the tire pressure change of the left front tire within 30 seconds is less than 8 kPa, the wheel-side circuit sealing of the left front tire is determined to be good; if the tire pressure change is greater than or equal to 8 kPa, the wheel-side circuit sealing of the left front tire is determined to be abnormal.

[0084] Furthermore, when detecting whether the wheel-side circuit sealing of the corresponding tire is abnormal, the on / off status of the safety valves of the remaining tires in each tire can be detected at the same time to save system self-test time.

[0085] In one embodiment of this application, after each tire completes the wheel-side circuit sealing anomaly detection, the air source and air valve module are controlled, including: controlling the opening of the control valve and vent valve of the corresponding tire. The abnormality of the active tire pressure regulation system is detected based on at least one of the air pressure in the air circuit section to be tested and the tire pressure, including: determining the tire pressure change of the corresponding tire; and determining that the vent circuit of the corresponding tire is abnormal when the tire pressure change is less than a third preset tire pressure change threshold. The third preset tire pressure change threshold can be set according to actual conditions.

[0086] Specifically, continuing with the example of the left front tire, assuming the third preset tire pressure change threshold is 8 kPa, after the abnormal sealing of the wheel-side circuit of the left front tire is detected, the control valve and vent valve corresponding to the left front tire are opened, while the safety valve of the left front tire remains open, and the tire pressure of the left front tire is collected in real time. If the tire pressure change of the left front tire within 20 seconds is less than 8 kPa, the vent circuit of the left front tire is determined to be abnormal; if the tire pressure change of the left front tire within 20 seconds is greater than or equal to 8 kPa, the vent circuit of the left front tire is determined to be normal.

[0087] In one embodiment of this application, after the deflation circuit of the corresponding tire has been tested, the air source and valve module are controlled, including: controlling the deflation valve to close while keeping the control valve of the corresponding tire open, and controlling the pressure holding valve to open for a third preset time before closing, so that the central air circuit and the branch circuit of the corresponding tire are connected to form the air circuit segment to be tested. An abnormality in the active tire pressure regulation system is detected based on at least one of the air pressure in the air circuit segment to be tested and the tire pressure, including: determining that the pressure holding circuit of the corresponding tire is abnormal when the air pressure in the air circuit segment to be tested is greater than or equal to a fourth preset pressure value. The third preset time and the fourth preset pressure value can be set according to actual conditions.

[0088] Specifically, taking the left front tire of the vehicle as an example, after the deflation circuit of the left front tire is tested, the pressure holding circuit of the left front tire is tested.

[0089] Assuming the third preset time is 1.5 seconds and the fourth preset pressure value is 10 kPa, after confirming the completion of the deflation circuit test for the left front tire, the deflation valve is closed while the control valve for the left front tire remains open. Then, after the pressure holding valve is opened for 1.5 seconds, it is closed while the control valve for the left front tire remains open. At this time, the central air circuit is connected to the branch circuit of the left front tire. The air pressure sensor acquires the air pressure in the air circuit. If the pressure value in the air circuit is less than 10 kPa, the pressure holding circuit of the left front tire is considered normal; if the pressure value in the air circuit is greater than or equal to 10 kPa, the pressure holding circuit of the left front tire is considered abnormal.

[0090] Furthermore, the anomaly detection process of this application includes three parts: first, the system status self-check performed during the power-on process (i.e., abnormal air source pressure detection and abnormal central air circuit detection); second, the automatic monitoring and detection of the system's working status during the inflation, deflation, and pressure holding operations (i.e., abnormal inflation detection, abnormal deflation detection, and abnormal pressure holding detection); and third, the system status detection performed by the system based on the driver's self-check command issued through the instrument panel or multimedia central control screen (i.e., abnormal safety valve working status detection, abnormal wheel-side circuit sealing detection, abnormal deflation circuit detection, and abnormal pressure holding circuit detection).

[0091] In summary, the anomaly detection method for the vehicle tire pressure active regulation system according to the embodiments of this application controls the air source and the valve module to obtain at least one of the air pressure in the air passage to be detected and the corresponding tire pressure. The tire pressure active regulation system includes an air source and a valve module, with the valve module disposed in the air passage between the air source and each tire. The method detects anomalies in the tire pressure active regulation system based on at least one of the air pressure in the air passage to be detected and the corresponding tire pressure. This method controls the air source and valve module according to a detection command and detects anomalies in the tire pressure active regulation system based on at least one of the obtained air pressure in the air passage to be detected and the corresponding tire pressure, thereby achieving autonomous detection of the tire pressure active regulation system and ensuring that the tire pressure active regulation system can achieve active and effective management of the wheels and tires.

[0092] Corresponding to the above embodiments, this application also proposes a controller.

[0093] like Figure 3 As shown, the controller 100 in this embodiment includes a memory 110, a processor 120, and an anomaly detection program for the active tire pressure regulation system stored in the memory 110 and executable on the processor 120. When the processor 120 executes the anomaly detection program for the active tire pressure regulation system, it implements the above-mentioned anomaly detection method for the active tire pressure regulation system.

[0094] According to the controller in this application embodiment, when the processor executes the abnormal detection program of the vehicle tire pressure active regulation system, it implements the above-mentioned abnormal detection method of the vehicle tire pressure active regulation system. It detects abnormalities in the tire pressure active regulation system based on at least one of the obtained air pressure in the air passage to be detected and the corresponding tire pressure, thereby realizing autonomous detection of the tire pressure active regulation system to ensure that the tire pressure active regulation system can achieve active and effective management of the wheels and tires.

[0095] Corresponding to the above embodiments, this application also proposes a vehicle tire pressure active regulation system.

[0096] like Figure 4As shown, the vehicle tire pressure active adjustment system of this application embodiment includes: an air source 10, an air valve module 20, a tire pressure monitoring module 40, an air pressure sensor 50, and an anomaly detection controller 60.

[0097] The air valve module 20 is installed in the air path between the air source 10 and the tire 30. The tire pressure monitoring module 40 is used to monitor tire pressure. The air pressure sensor 50 is used to detect the air pressure in the air path section to be tested. The anomaly detection controller 60 is the aforementioned controller.

[0098] According to the vehicle tire pressure active regulation system of this application embodiment, the air valve module is set in the air line between the air source and the tire, the tire pressure is monitored by the tire pressure monitoring module, the air pressure in the air line section to be detected is detected by the air pressure sensor, and the abnormality detection controller is the aforementioned controller. Based on the aforementioned controller, the abnormality of the tire pressure active regulation system is detected according to at least one of the obtained air pressure in the air line section to be detected and the corresponding tire pressure, thereby realizing the autonomous detection of the tire pressure active regulation system to ensure that the tire pressure active regulation system can realize active and effective management of the wheels and tires.

[0099] Corresponding to the above embodiments, this application also proposes a vehicle.

[0100] See Figure 5 As shown, the vehicle 1000 in this embodiment includes the above-described active tire pressure regulation system 1100.

[0101] The vehicle in this embodiment of the application, based on the above-mentioned active tire pressure regulation system, detects abnormalities in the active tire pressure regulation system by acquiring at least one of the air pressure in the air passage to be detected and the corresponding tire pressure, thereby realizing autonomous detection of the active tire pressure regulation system to ensure that the active tire pressure regulation system can achieve active and effective management of the wheels and tires.

[0102] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0103] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0104] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0105] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0106] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0107] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for detecting anomalies in a vehicle's active tire pressure regulation system, characterized in that, include: The system controls the air source and the air valve module to obtain at least one of the air pressure in the air circuit section to be detected and the corresponding tire pressure, wherein the active tire pressure adjustment system includes the air source and the air valve module, and the air valve module is disposed in the air circuit between the air source and each tire. The abnormal condition of the active tire pressure regulation system is detected based on at least one of the air pressure in the air passage to be detected and the corresponding tire pressure. The control air source and air valve module, for obtaining at least one of the air pressure in the air circuit section to be detected and the corresponding tire pressure, includes: The system controls the start or stop of the air source and the opening or closing of multiple valves in the air valve module, so that the air path to be tested includes a central air path. The air pressure in the air passage section to be tested is obtained by detecting the air pressure in the central air passage, and / or the tire pressure of the corresponding tire is obtained by the tire pressure monitoring module. During system self-check, The control unit for the air source and valves includes: The air source is started, and the air valve module is controlled to open the inflation passage, which is used to inflate the tire. When the inflation time of the corresponding tire reaches the first preset inflation time, the air source and inflation valve are controlled to close, while the control valve and safety valve of the corresponding tire are kept open, so that the tire is connected to the central air passage to form the air passage segment to be tested. The tire pressure active regulation system is detected for abnormalities based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: The pressure difference between the air pressure in the air passage to be tested and the tire pressure is obtained; When the pressure difference is greater than or equal to a preset pressure difference threshold, it is determined that the safety valve of the corresponding tire has malfunctioned and opened abnormally.

2. The anomaly detection method according to claim 1, characterized in that, The control unit for the air source and valves includes: The control air source is started, and the inflation valve in the air valve module is opened, while the control valve in the air valve module is kept closed. The air source is connected to the central air circuit through the inflation valve to form the air circuit segment to be tested. The active tire pressure regulation system is tested for abnormalities based on at least one of the air pressure in the air passage to be tested and the corresponding tire pressure, including: If the gas pressure in the gas path is less than the first preset pressure value after the working time of the gas source reaches the first preset time, it is determined that the gas source pressure is abnormal.

3. The anomaly detection method according to claim 1, characterized in that, After checking the system for abnormal air source pressure... The control unit for the air source and valves includes: The gas source and inflation valve are closed, and the control valve is kept closed. The central gas path is the gas path segment to be tested. The tire pressure active regulation system is detected for abnormalities based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: Determine the pressure change value in the gas path section to be tested; When the pressure change in the gas path section to be detected exceeds a preset pressure threshold, the system is determined to have experienced a central gas path abnormality.

4. The anomaly detection method according to claim 1, characterized in that, in, When inflating the corresponding tires Controlling the air source and air valve module to obtain at least one of the air pressure in the air circuit section to be detected and the corresponding tire pressure, including: The air source is started and the inflation valve is opened to open the safety valve of the corresponding tire. The air source, the central air circuit and the corresponding tire are connected in sequence to form the air circuit segment to be tested. The tire pressure active regulation system is detected for abnormalities based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: When the tire pressure change of the corresponding tire is less than the preset tire pressure change threshold, and / or when the air pressure in the air passage to be detected is greater than the second preset pressure value and lasts for the second preset time, it is determined that the system has an inflation abnormality.

5. The anomaly detection method according to claim 1, characterized in that, When deflating the corresponding tire The control unit for the air source and valves includes: The safety valve, control valve, and deflation valve are opened to connect the tire, the central air passage, and the deflation passage in sequence, and to deflate the tire. The two ends of the deflation passage are connected to the central air passage and the atmosphere, respectively. The tire pressure active regulation system is detected for abnormalities based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: When the tire pressure change of the corresponding tire is less than the first preset tire pressure change threshold, it is determined that the system has experienced an abnormal deflation.

6. The anomaly detection method according to claim 4 or 5, characterized in that, Controlling the air source and air valve module to obtain at least one of the air pressure in the air circuit section to be detected and the corresponding tire pressure, including: After inflation or deflation is completed, the corresponding tire is pressurized, and the pressurization valve is closed after pressurization is completed. The inlet of the pressurization valve is connected to the central air circuit, and the outlet of the pressurization valve is adapted to be connected to the atmosphere. The central air circuit is connected to the branch circuit of the corresponding tire to form the air circuit section to be tested. The tire pressure active regulation system is detected for abnormalities based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: When the air pressure in the gas path section to be tested is greater than the third preset pressure value, it is determined that the system has experienced a pressure holding abnormality.

7. The anomaly detection method according to claim 1, characterized in that, After confirming that the safety valve of the corresponding tire is open normally. The control unit for the air source and valves includes: The control valve for the corresponding tire is closed; The tire pressure active regulation system is detected for abnormalities based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: Determine the tire pressure change for the corresponding tire; When the tire pressure change is greater than or equal to the second preset tire pressure change threshold, it is determined that the corresponding tire has an abnormal wheel-side circuit sealing.

8. The anomaly detection method according to claim 7, characterized in that, After each tire has undergone wheel-side circuit sealing abnormality testing... The control unit for the air source and valves includes: Controls the opening of the corresponding tire's control valve and deflation valve; The tire pressure active regulation system is detected for abnormalities based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: Determine the tire pressure change for the corresponding tire; When the tire pressure change is less than a third preset tire pressure change threshold, the deflation circuit of the corresponding tire is determined to be abnormal.

9. The anomaly detection method according to claim 8, characterized in that, After the deflation circuit of the corresponding tire has been tested, The control unit for the air source and valves includes: The deflation valve is closed while the control valve of the corresponding tire remains open. The pressure holding valve is opened for a third preset time and then closed, so that the central air passage is connected to the branch passage of the corresponding tire to form the air passage section to be tested. The tire pressure active regulation system is detected for abnormalities based on at least one of the air pressure in the air passage to be tested and the tire pressure, including: When the air pressure in the air circuit section to be tested is greater than or equal to the fourth preset pressure value, it is determined that the pressure holding circuit of the corresponding tire is abnormal.

10. A controller, characterized in that, The system includes a memory, a processor, and an anomaly detection program for an active tire pressure regulation system stored in the memory and executable on the processor. When the processor executes the anomaly detection program for the active tire pressure regulation system, it implements the anomaly detection method for the active tire pressure regulation system according to any one of claims 1-9.

11. A vehicle tire pressure active regulation system, characterized in that, include: An air source and an air valve module, wherein the air valve module is disposed in the air path between the air source and the tire; A tire pressure monitoring module, wherein the tire pressure monitoring module is used to monitor tire pressure; A pressure sensor, used to detect the pressure in the gas path section to be detected; An anomaly detection controller, wherein the anomaly detection controller is the controller according to claim 10.

12. A vehicle, characterized in that, Includes the vehicle tire pressure active regulation system according to claim 11.

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