A reliability detection method and related device for air compressor in vehicle

Abstract

The present application discloses a reliability detection method for an air compressor in a vehicle and a related device, the method comprising: obtaining multiple inflation times collected for the air compressor in the target vehicle within a first preset time period, and target inflation time thresholds corresponding to each unit pressure. Then, from the multiple inflation times, determine the target number of inflation times that exceed the limit. Finally, if the target number is greater than the number threshold, send an alarm to indicate a fault in the air compressor in the target vehicle. By collecting and analyzing the inflation time of the gas cylinder within a specific time in real time, and comparing it with the preset target inflation time threshold, the reliability of the air compressor can be detected in time and an alarm can be issued to prompt the driver or maintenance personnel to take timely measures. When it is detected that the number of inflation times beyond the normal range exceeds a certain threshold, the system will automatically issue an alarm to prompt the driver or maintenance personnel to take timely measures, thereby improving the accuracy and timeliness of air compressor fault diagnosis.

Description

Technical Field

[0001] The present application relates to the field of vehicle detection, and in particular to a reliability detection method and related device for an air compressor in a vehicle. Background Art

[0002] With the rapid development of the automotive industry and the higher requirements for transportation efficiency, it is crucial to ensure the efficient operation of vehicles. An air compressor is a mechanical device that generates high-pressure gas by compressing air. In the field of vehicles, air compressors are mainly used to provide compressed air for the vehicle's braking system and other pneumatic systems. Its reliability directly affects the safety and economy of the vehicle.

[0003] Traditional air compressors can only generate fault signals after an air compressor failure occurs. At this time, the air compressor is often unable to work normally, and there is no guarantee that the vehicle can complete the journey normally before repair. This not only affects the normal and safe operation of the vehicle, but may also cause additional economic losses.

[0004] Therefore, how to issue an alarm in advance before the air compressor in the vehicle fails is a problem that needs to be solved at present. Summary of the invention

[0005] In view of this, the present application provides a reliability detection method and related device for an air compressor in a vehicle to solve the problem that the reliability of the air compressor in the vehicle cannot be detected in advance before a complete failure.

[0006] In a first aspect, the present application provides a method for detecting reliability of an air compressor in a vehicle, the method comprising:

[0007] Acquire multiple inflation time periods collected by the air compressor in the target vehicle within a first preset time period, and target inflation time thresholds corresponding to each unit pressure, wherein the inflation time period is used to describe the time required for the gas cylinder to increase one unit pressure each time, and the gas cylinder is used to store the gas compressed by the air compressor, and the target inflation time threshold is the inflation time threshold of the target vehicle at the corresponding unit pressure;

[0008] Determine a target number of inflating time periods that exceed the limit from the plurality of inflating time periods, wherein the inflating time that exceeds the limit is an inflating time period that is greater than a target inflating time threshold under a corresponding unit pressure;

[0009] If the target quantity is greater than a quantity threshold, an alarm is sent to indicate an air compressor failure in the target vehicle.

[0010] In a possible implementation, the method further includes:

[0011] Acquire multiple exhaust temperatures collected from the air compressor in the target vehicle within a second preset time period, and a target temperature threshold, where the target temperature threshold is the exhaust temperature threshold corresponding to the target vehicle;

[0012] Based on the multiple exhaust temperatures, determine the duration of the exhaust temperature being greater than the target temperature threshold, where the duration is the duration corresponding to the multiple consecutive exhaust temperatures;

[0013] If the duration is longer than a time threshold, an alarm is sent to indicate an air compressor failure in the target vehicle.

[0014] In a possible implementation, the method further includes:

[0015] Acquire a plurality of first test vehicles of the same type as the target vehicle, wherein the first test vehicles are vehicles whose running time is greater than a first preset time;

[0016] For a target first test vehicle among the plurality of first test vehicles, collecting the exhaust temperature of the target first test vehicle when the load rate of the air compressor in the target first test vehicle is controlled to be greater than a load rate threshold, wherein the load rate is a percentage of the air compressor working time to the vehicle running time;

[0017] Taking the plurality of first test vehicles as the target first test vehicles respectively, and obtaining the exhaust temperature of each of the first test vehicles;

[0018] The target exhaust temperature threshold is determined according to the exhaust temperature of each of the first test vehicles.

[0019] In a possible implementation, the method further includes:

[0020] Acquire a plurality of second test vehicles of the same type as the target vehicle, wherein the same type means having the same gas cylinder type as the target vehicle or the same gas circuit system as the target vehicle;

[0021] For a target second test vehicle among the plurality of the second test vehicles, under the condition that the target second test vehicle is controlled in an idling condition, a plurality of calibrated inflation time durations of the air compressor in the target second test vehicle within a third preset time duration are collected, wherein the calibrated inflation time duration is used to describe the time duration required for the gas cylinder to increase one unit pressure, and each unit pressure has a corresponding calibrated inflation time duration;

[0022] Taking a plurality of the second test vehicles as the target second test vehicles respectively, and obtaining a plurality of calibrated inflation times of the respective second test vehicles;

[0023] For a target unit pressure among the plurality of unit pressures, determining a target inflation time threshold corresponding to the target unit pressure according to the calibrated inflation time corresponding to the target unit pressure for each of the second test vehicles;

[0024] The multiple unit pressures are respectively used as the target unit pressures to obtain multiple target inflation time thresholds.

[0025] In a possible implementation, determining the target inflation time threshold corresponding to the target unit pressure according to the calibrated inflation time corresponding to the target unit pressure of each second test vehicle includes:

[0026] Obtaining a maximum inflation value and a minimum inflation value, wherein the maximum inflation value is determined based on a vehicle having a running time greater than a second running time, and the minimum inflation value is determined based on a vehicle having a running time less than a first running time, and the second running time is greater than the first running time;

[0027] From the plurality of calibrated inflation times corresponding to the target unit pressure of each of the second test vehicles, remove the calibrated inflation times greater than the maximum inflation value and remove the calibrated inflation times less than the minimum inflation value to obtain a pending inflation time;

[0028] According to the pending inflation time, a target inflation time threshold corresponding to the target unit pressure is determined.

[0029] In a possible implementation, determining the target inflation time threshold corresponding to the target unit pressure according to the to-be-determined inflation time includes:

[0030] The maximum pending inflation time among the plurality of pending inflation time, is used to determine the target inflation time threshold corresponding to the target unit pressure; or

[0031] The target inflation time threshold corresponding to the target unit pressure is determined according to the to-be-determined inflation time and the type of the target vehicle.

[0032] A second aspect of the present application provides a reliability detection device for an air compressor in a vehicle, the device comprising: an acquisition unit, a detection unit and an alarm unit;

[0033] The acquisition unit is used to acquire multiple inflation time periods collected by the air compressor in the target vehicle within a first preset time period, and target inflation time thresholds corresponding to each unit pressure, wherein the inflation time is used to describe the time required for the gas cylinder to increase one unit pressure each time, and the gas cylinder is used to store the gas compressed by the air compressor, and the target inflation time threshold is the inflation time threshold of the target vehicle at the corresponding unit pressure;

[0034] The detection unit is used to determine a target number of inflating time periods that exceed the limit from the plurality of inflating time periods, wherein the inflating time that exceeds the limit is an inflating time period that is greater than a target inflating time threshold under a corresponding unit pressure;

[0035] The alarm unit is used to send an alarm for prompting a failure of the air compressor in the target vehicle if the target quantity is greater than a quantity threshold.

[0036] A third aspect of the present application provides a vehicle, the vehicle comprising an air pressure sensor and a processor;

[0037] The air pressure sensor is used to obtain multiple air-inflation durations collected from the air compressor in the target vehicle within a first preset duration, wherein the air-inflation duration is used to describe the duration required for the gas cylinder to increase one unit of pressure, and the gas cylinder is used to store the gas compressed by the air compressor;

[0038] The processor is used to obtain the target inflation time threshold corresponding to each unit pressure, wherein the target inflation time threshold is the inflation time threshold of the target vehicle under the corresponding unit pressure;

[0039] Determine a target number of inflating time periods that exceed the limit from the plurality of inflating time periods, wherein the inflating time that exceeds the limit is an inflating time period that is greater than a target inflating time threshold under a corresponding unit pressure;

[0040] If the target quantity is greater than a quantity threshold, an alarm is sent to indicate an air compressor failure in the target vehicle.

[0041] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method described in the first aspect above.

[0042] In a fifth aspect, the present application provides a computer program product, including a computer program or instructions; when the computer program or instructions are executed by a processor, the method described in the first aspect above is executed.

[0043] It can be seen from the above technical solutions that the present application has the following beneficial effects:

[0044] In order to cope with the situation that the current vehicle cannot monitor the reliability of the air compressor in real time and can only get an alarm when it completely fails, after obtaining multiple inflation times collected for the air compressor in the target vehicle within the first preset time period and the target inflation time threshold corresponding to each unit pressure, the target number of exceeded inflation time is determined. The exceeded inflation time is the inflation time that is greater than the target inflation time threshold under the corresponding unit pressure. Therefore, the real-time status of the current vehicle's air compressor can be determined, and the reliability of the vehicle's air compressor can be analyzed based on the target number. If the target number is greater than the number threshold, an alarm is sent to prompt the failure of the air compressor in the target vehicle, so as to notify relevant personnel and departments before the air compressor completely fails, and replace and repair the air compressor in time to ensure the safe operation of the vehicle and avoid safety hazards and economic losses caused by the sudden failure of the air compressor that prevents the vehicle from operating normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A method flow chart of a method for detecting reliability of an air compressor in a vehicle provided by an embodiment of the present application;

[0046] Figure 2 An example diagram of an application of a reliability detection method for an air compressor in a vehicle provided by an embodiment of the present application;

[0047] Figure 3 A schematic structural diagram of a reliability detection device for an air compressor in a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0049] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0050] Nowadays, vehicles rely on efficient air brake systems to ensure driving safety during driving, and the normal operation of the air brake system directly depends on the performance of the on-board air compressor. After long-term use, the air compressor will have a problem of reduced air pumping efficiency, which will affect the response speed of the entire brake system. Existing cars on the market lack effective means of monitoring air compressors. When the air compressor begins to show a decrease in air pumping efficiency, it can often only remind the driver through an air pressure alarm. However, when this alarm appears, it usually means that the air compressor is in a faulty state and cannot meet the needs of normal vehicle driving. The most important thing is that the braking system is the top priority for ensuring vehicle safety. Damage to the air compressor will have a serious impact on the braking system and affect the safety of vehicle driving.

[0051] For example, when the vehicle is a commercial vehicle, such as a truck, van, or van, the goods need to be delivered on time. Each delivery task needs to be time-sensitive, especially for refrigerated fresh goods. If the air compressor cannot be warned in advance, a sudden failure will result in failure to deliver on time. Failure to deliver on time will result in failure to meet customer needs or even damage to the goods, resulting in economic losses.

[0052] In response to the above problems, this application proposes a new method and related device for detecting the reliability of air compressors in vehicles. The core idea of ​​this application is to evaluate the reliability of air compressors by collecting and analyzing the target inflation time of the gas cylinder within the first preset time in real time, and comparing it with the target inflation time threshold. First, the inflation time of the air compressor is collected in real time, and the inflation time threshold for the normal operation of the air compressor is determined. When the actual inflation time monitored exceeds the set threshold, the system will automatically issue an early warning to prompt the driver or maintenance personnel to check or repair.

[0053] Compared to the traditional method of only being warned when the air compressor fails completely, the present application can provide early warning of the trend of declining reliability of the air compressor, providing drivers or maintenance personnel with sufficient time to arrange reasonable repair and replacement plans, thereby effectively avoiding the risk of vehicle downtime due to sudden failure of the air compressor.

[0054] See also Figure 1 , Figure 1 A method flow chart of a method for detecting the reliability of an air compressor in a vehicle provided in an embodiment of the present application, the method specifically comprises the following steps:

[0055] The following method embodiments use a vehicle processor as an execution subject.

[0056] Step 101: Acquire multiple inflation time periods collected from an air compressor in a target vehicle within a first preset time period, and target inflation time thresholds corresponding to respective unit pressures.

[0057] Target vehicles: Vehicles that require air compressor reliability testing.

[0058] Air compressor: A device used to compress air to produce high-pressure gas, which is mainly used to provide compressed air for the brake system and other pneumatic systems on the vehicle.

[0059] Inflation time: the time required for the cylinder pressure to increase by one unit pressure.

[0060] Unit pressure: The smallest unit of measurement for the increase in gas pressure in a cylinder, such as 1 bar or 1 psi.

[0061] Inflation time threshold: The maximum value of the inflation time that the air compressor should reach for each unit increase in pressure of the target vehicle's gas cylinder.

[0062] Target inflation time threshold: The inflation time threshold of the target vehicle at the corresponding unit pressure is an important basis for detecting the reliability of the air compressor.

[0063] Gas cylinder: stores high-pressure gas generated by air compressor.

[0064] The first preset time period is a time period used to detect whether the air compressor in the target vehicle fails, such as the driving time of the target vehicle, or the operation time of a single air compressor.

[0065] The main function of an air compressor is to compress the air in the atmosphere into high-pressure gas in order to provide the necessary power source for the vehicle's braking system and other pneumatic systems. The working process of an air compressor can be divided into the following steps:

[0066] Intake stage: When the air compressor starts, the piston moves downward, forming a negative pressure area. The external atmospheric pressure pushes the intake valve to open, and fresh air enters the cylinder of the compressor through the intake valve.

[0067] Compression phase: The piston begins to move upward, reducing the volume inside the cylinder. As the volume decreases, the air in the cylinder is compressed, and the pressure and temperature rise accordingly. During the compression process, the intake valve closes to prevent air from flowing back.

[0068] Exhaust stage: When the pressure in the cylinder reaches a certain value, the exhaust valve is pushed open, the compressed air is discharged into the gas cylinder, and the piston continues to move upward until most of the air in the cylinder is discharged.

[0069] Cooling stage: After the high-temperature and high-pressure gas is discharged, the temperature inside the cylinder is high and needs to be cooled through a radiator or cooling system. Cooling helps to extend the service life of the air compressor and ensure that the temperature inside the cylinder is appropriate during the next cycle.

[0070] The above four steps constitute a complete compression cycle.

[0071] The air compressor will automatically start and stop according to the pressure in the gas cylinder to maintain the pressure in the gas cylinder within an ideal range. Therefore, the working mode of the air compressor is usually intermittent, which means that it will start when the pressure in the gas cylinder is lower than the set lower limit, and stop when the pressure reaches the upper limit.

[0072] First, it is necessary to obtain from the target vehicle the inflation time of the air compressor within a first preset time period, where the inflation time reflects the time required for the gas cylinder of the target vehicle to reach the next unit pressure each time.

[0073] During the data acquisition process, it is necessary to continuously monitor the changes in the gas cylinder's air pressure and record the time required for the air compressor to increase the cylinder pressure by one unit. This process may be completed by a sensor installed on the vehicle (such as an air pressure sensor), which will periodically or continuously measure the air pressure in the cylinder and transmit the data to the processor.

[0074] At the same time, it is also necessary to obtain the target inflation time thresholds corresponding to each unit pressure. These thresholds are usually obtained through experiments or historical data analysis, and they represent the maximum inflation time that the air compressor should reach for each unit pressure increase under normal circumstances.

[0075] Under normal working conditions, the time required for the air compressor to compress a certain amount of air to a predetermined pressure level should be relatively stable. This stable time value can be defined by the target inflation time threshold. Exceeding the target inflation time threshold is an abnormal working state.

[0076] As an air compressor ages or becomes damaged, its efficiency may decrease. One manifestation of this decrease is an increase in pumping time, meaning that it takes longer to complete the same compression task.

[0077] Assuming that a new air compressor takes about 30 seconds to increase the cylinder pressure from 3 bar to 4 bar at idle speed, in daily use, if you find that this process always takes about 30 seconds, then you can assume that the air compressor is in good working condition.

[0078] Assuming that the target inflation time threshold corresponding to the unit pressure is 40 seconds, if one day it is found that this process takes 45 seconds or more to complete, then this indicates that there may be performance problems with the air compressor. If this situation occurs repeatedly, it means that the reliability of the air compressor has decreased.

[0079] Step 101 is the basis of the entire air compressor reliability detection method. By obtaining the inflation time data, a data set about the real-time working status of the air compressor can be established. By obtaining the target inflation time threshold, a benchmark for reliability detection can be obtained, thereby providing data support for reliability detection.

[0080] Step 102: Determine a target number of inflating times that exceed the limit from a plurality of inflating times.

[0081] The over-limit inflation time is an inflation time that is greater than the target inflation time threshold under the corresponding unit pressure.

[0082] Excessive inflation time: During the detection period, the time taken by the air compressor to increase the pressure of the gas cylinder by one unit pressure. If this time exceeds the target inflation time threshold under the corresponding unit pressure, it is considered as excessive inflation time.

[0083] By identifying the excessive inflation time, early signs of air compressor performance degradation can be detected. The number of excessive inflation times can be used as an indicator to evaluate the reliability of the air compressor. When the number of excessive inflation times exceeds a certain threshold, the driver or maintenance personnel can be prompted to perform maintenance or replace the air compressor in a timely manner.

[0084] Compare each collected inflation time with the target inflation time threshold of the corresponding unit pressure. If a certain inflation time is greater than the target inflation time threshold under the corresponding unit pressure, it means that the inflation time is long and the air compressor is in an inflated state for a long time, and the possibility of failure is high, it will be marked as an excessive inflation time, and it will be regarded as a problem in the pressure increase process of the unit pressure. For example, in the process of the gas cylinder rising from 1 bar to 2 bar, the target inflation time threshold is 45 seconds, and the corresponding inflation time is 50 seconds, it will be marked as an excessive inflation time. After the above comparison of all inflation times, the total number of excessive inflation times, that is, the target number, is counted.

[0085] This step is one of the key steps in the reliability detection method. Its purpose is to identify signs of reduced reliability of the air compressor. By comparing the actual inflation time with the preset target inflation time threshold, it can be discovered in time whether the air compressor is gradually losing its original standard performance.

[0086] Step 103: If the target quantity is greater than the quantity threshold, an alarm is sent to indicate that the air compressor in the target vehicle is faulty.

[0087] After completing the analysis of the inflation time, if the determined target number of excessive inflation times exceeds a preset threshold, an alarm mechanism will be triggered, and an alarm message will be automatically generated through the alarm mechanism, which clearly indicates that there may be a problem with the air compressor in the target vehicle.

[0088] The warning information will be sent to multiple destinations through the vehicle's electronic control system, including but not limited to the dashboard, data center, and cloud server. The dashboard will display the warning information to remind the driver to pay attention to the status of the air compressor. The data center will receive the warning information and record it for later analysis and tracking. The cloud server will also receive the warning information and may trigger a remote monitoring mechanism to further collect and analyze the vehicle's data.

[0089] Through the alarm mechanism, the driver can immediately realize that the air compressor may fail and take necessary actions. Maintenance personnel can arrange preventive maintenance in time based on the alarm information to reduce the occurrence of sudden failures. The cloud server can remotely monitor the vehicle status, which is helpful for fleet management and scheduling. The data center can record the alarm information for subsequent analysis and improvement. Most importantly, early detection and resolution of problems can help improve vehicle safety and reduce the economic impact caused by sudden failures of air compressors due to the lack of early warning.

[0090] The present application embodiment does not specifically limit the method for determining the target pumping time threshold, and those skilled in the art can set it according to actual needs. The following is an example for explanation, specifically referring to steps 1011 to 1015.

[0091] Step 1011: Acquire a plurality of second test vehicles of the same type as the target vehicle.

[0092] The same type means the same type of gas cylinder as the target vehicle, or the same gas circuit system as the target vehicle;

[0093] Step 1012: For a target second test vehicle among the multiple second test vehicles, while controlling the target second test vehicle to be in an idle condition, collect multiple calibrated inflation durations of the air compressor in the target second test vehicle within a third preset duration.

[0094] Calibrated inflation time: describes the time required for the gas cylinder to increase by one unit of pressure. Each unit of pressure has a corresponding calibrated inflation time;

[0095] S1013: taking a plurality of second test vehicles as target second test vehicles respectively, and obtaining a plurality of calibrated inflation times of the respective second test vehicles;

[0096] S1014: for a target unit pressure among the multiple unit pressures, determining a target inflation time threshold corresponding to the target unit pressure according to the calibrated inflation time corresponding to each second test vehicle at the target unit pressure;

[0097] S1015: Using the multiple unit pressures as target unit pressures respectively, to obtain multiple target inflation time thresholds.

[0098] Second test vehicle: a vehicle of the same type as the target vehicle, which is used to test and calibrate the target inflation time threshold of the air compressor.

[0099] Target second test vehicle: a vehicle selected for testing from a plurality of second test vehicles.

[0100] Idle condition: The vehicle engine is at the lowest stable speed and the vehicle is not accelerating.

[0101] The third preset duration is a time period used to detect the duration of the air compressor inflating the second test vehicle, such as the driving time of the target vehicle, or the duration of a single air compressor operation.

[0102] Calibrated inflation time: Under test conditions, the time required for the gas cylinder pressure of the second test vehicle to increase by one unit pressure.

[0103] Target unit pressure: A specific unit pressure value selected during calibration, used to obtain the corresponding inflation time threshold.

[0104] Target inflation time threshold: refers to the threshold of the air compressor inflation time under a specific unit pressure, which is used to determine whether the air compressor is working normally.

[0105] First, it is necessary to obtain a plurality of second test vehicles of the same type as the target vehicle. Here, "same type" means that the gas cylinder type or gas circuit system of these vehicles is the same as that of the target vehicle.

[0106] Among them, different types of gas cylinders may correspond to different gas capacities, and different gas capacities will affect the time required to inflate for each unit increase in pressure. Therefore, vehicles with the same type of gas cylinders can be regarded as the same type of vehicles, and the time required to inflate for each unit increase in pressure is not much different.

[0107] In addition, the gas circuit system includes not only gas cylinders and air compressors, but also pipes connecting the gas cylinders and air compressors. The length, thickness and arrangement of the pipes may also affect the time it takes for the compressed air generated by the air compressor to be transmitted to the gas cylinder, thereby affecting the inflation time required to increase one unit of pressure. By more carefully considering the impact of the pipes on the inflation time, the accuracy of air compressor reliability testing can be improved.

[0108] By ensuring that the gas cylinder type or gas circuit system of the target second test vehicle is the same as that of the target vehicle, the test results are standardized and representative.

[0109] Next, the selected target second test vehicle is tested. During the test, the second test vehicle needs to be placed in an idle condition, and the air compressor needs to be controlled to work within a third preset time to collect the time data required for the gas cylinder to increase one unit of pressure, that is, to calibrate the inflation time. When the second test vehicle is in an idle condition, the engine is at the lowest speed. When the engine speed is low, the air compressor's inflation efficiency becomes lower and the inflation time becomes longer. Therefore, testing the second test vehicle in an idle condition can not only unify the test conditions, but also simulate the situation when the reliability of the air compressor is poor.

[0110] A set of calibrated inflation time durations is obtained for the target second test vehicle. A target inflation time duration threshold is obtained according to the calibrated inflation time durations of the target second test vehicle at the target unit pressure.

[0111] Finally, for different unit pressures, a target inflation time threshold is determined by statistically analyzing the calibrated inflation time data of the target second test vehicle under unit pressure.

[0112] By using a second test vehicle of the same type as the target vehicle for calibration, it can be ensured that the target inflation time threshold is more in line with the actual situation and the accuracy of fault detection can be improved. Based on the data of multiple test vehicles, the impact of individual differences can be reduced, making the target inflation time threshold more reliable, thereby reducing the possibility of false alarms. The use of unified test conditions (such as idling conditions) ensures the consistency and repeatability of the test, making the results more convincing.

[0113] In one possible implementation, the embodiment of the present application provides a specific implementation of step 1015, that is, taking multiple unit pressures as target unit pressures respectively to obtain multiple target inflation time thresholds, see steps 10151 to 10153 for details.

[0114] Step 10151: Obtain the maximum and minimum inflation values.

[0115] The maximum inflation value is determined based on a vehicle whose running time is greater than the second running time, and the minimum inflation value is determined based on a vehicle whose running time is less than the first running time, and the second running time is greater than the first running time;

[0116] Step 10152: From the multiple calibrated inflation times corresponding to the target unit pressure of each second test vehicle, remove the calibrated inflation times greater than the maximum inflation value and remove the calibrated inflation times less than the minimum inflation value to obtain a pending inflation time;

[0117] Step 10153: Determine the target inflation time threshold corresponding to the target unit pressure based on the pending inflation time.

[0118] Maximum inflation time: the maximum inflation time determined based on a vehicle whose operating time is greater than the second operating time.

[0119] Minimum inflation time: the minimum inflation time determined based on vehicles whose operating time is less than the first operating time.

[0120] Undetermined inflation time: the remaining calibrated inflation time after removing outliers from multiple calibrated inflation times.

[0121] Select vehicles with a running time greater than the second running time. These vehicles may have experienced more wear and tear, resulting in a longer inflation time. By analyzing the data of these vehicles, determine the maximum inflation time. Select vehicles with a running time less than the first running time. These vehicles are newer and usually have a shorter inflation time. By analyzing the data of these vehicles, determine the minimum inflation time.

[0122] From the multiple calibrated inflation times corresponding to the target unit pressure of each second test vehicle, remove those calibrated inflation time data that are greater than the maximum inflation value and less than the minimum inflation value. Doing so can exclude extreme values, thereby improving the representativeness of the data. After the above steps, the pending inflation time is obtained after removing the outliers. These data are considered to be more reliable and can be used for further analysis. Based on the pending inflation time data set, determine the target inflation time threshold corresponding to the target unit pressure.

[0123] By excluding outliers, the target inflation time threshold can more accurately reflect the performance of the air compressor under normal working conditions. Filtering out extreme values ​​can reduce false alarms caused by individual abnormal vehicles and improve the reliability of the warning system.

[0124] The embodiment of the present application provides two specific implementation methods of S10153, namely, the specific implementation methods of determining the target inflation time threshold corresponding to the target unit pressure according to the to-be-determined inflation time, which are respectively described below.

[0125] Method 1: The largest pending inflation time among multiple pending inflation time periods is used to determine the target inflation time threshold corresponding to the target unit pressure.

[0126] The maximum pending inflating time is selected from the pending inflating time as the target inflating time threshold corresponding to the target unit pressure. This method is intended to ensure that the performance of the air compressor is still within an acceptable range even in the most unfavorable conditions. Selecting the maximum pending inflating time as the threshold can ensure that even if the performance of the air compressor decreases, it can still work normally within the threshold.

[0127] Method 2: Determine the target inflation time threshold corresponding to the target unit pressure based on the pending inflation time and the type of the target vehicle.

[0128] The target inflation time threshold corresponding to the target unit pressure is determined according to the pending inflation time and the type of target vehicle. This method takes into account the differences between different vehicle types, and obtains a target inflation time threshold that is more in line with the actual vehicle conditions by comprehensively analyzing the pending inflation time and the target vehicle type. For example, for a certain model of vehicle, the life of the air compressor under normal conditions is 3000h. If you want to issue an alarm under the condition that the air compressor has been running for 2400h, it is considered that the reliability at this time is not enough to support this model. The maximum value of the pending inflation time may not be selected. The method of determining the target inflation time can be adjusted to adapt to the needs of the actual target vehicle type.

[0129] The target inflation time threshold determined by the above two methods can more accurately reflect the actual working status of the air compressor on the target vehicle, thereby improving the accuracy of fault warning. Selecting the maximum pending inflation time as the threshold can reduce false alarms caused by slight degradation of vehicle performance. The method combining the target vehicle type can determine the threshold according to the characteristics of different vehicle models, making the threshold more suitable for specific types of vehicles, improving the applicability and flexibility of the system.

[0130] In a possible implementation, the method provided in the embodiment of the present application also includes a method for detecting vehicle reliability by collecting exhaust temperature, see steps 111 to 113 for details:

[0131] Step 111: acquiring a plurality of exhaust temperatures collected from an air compressor in a target vehicle within a second preset time period and a target temperature threshold, where the target temperature threshold is an exhaust temperature threshold corresponding to the target vehicle;

[0132] Step 112: determining, based on the multiple exhaust temperatures, a duration of the exhaust temperature being greater than the target temperature threshold, where the duration is a duration corresponding to the multiple consecutive exhaust temperatures;

[0133] Step 113: If the duration is longer than the time threshold, an alarm is sent to indicate that the air compressor in the target vehicle is faulty.

[0134] The second preset time period is a time period used to detect whether the exhaust temperature in the target vehicle exceeds the target temperature threshold, such as the driving time of the target vehicle, or the operation time of a single air compressor.

[0135] Exhaust temperature: the temperature at the exhaust port of the air compressor. The weaker the air compression capacity of the air compressor, the longer it takes to increase the cylinder pressure to the target pressure and the higher the exhaust port temperature. Therefore, the exhaust temperature can reflect the compression capacity of the air compressor and its reliability.

[0136] During the second preset time, the exhaust temperature of the air compressor in the target vehicle is continuously monitored and multiple exhaust temperature data points are recorded. The target temperature threshold is used to determine whether the exhaust temperature exceeds the normal range. Based on the multiple exhaust temperature data points collected, the duration of the exhaust temperature above the target temperature threshold is counted. The duration refers to the length of time that multiple consecutive exhaust temperatures exceed the target temperature threshold. If the high temperature lasts longer than a preset time threshold, the system will send an alarm signal to the dashboard, data center, and cloud server.

[0137] By judging whether the temperature of the air compressor exhaust port exceeds the target temperature threshold, problems can be discovered before the air compressor overheats and causes serious failures, which helps to take timely measures to avoid greater losses and reduce the risk of safety accidents caused by air compressor failures. At the same time, it prevents the failure of the inflation time analysis method and plays a role in assisting in determining the reliability of the air compressor.

[0138] In a possible implementation, the method described in steps 111 to 113 provided in the embodiment of the present application further includes:

[0139] Acquire a plurality of first test vehicles of the same type as the target vehicle, wherein the first test vehicles are vehicles whose running time is greater than a first preset time;

[0140] For a target first test vehicle among the plurality of first test vehicles, collecting the exhaust temperature of the target first test vehicle when the load rate of the air compressor in the target first test vehicle is controlled to be greater than a load rate threshold, wherein the load rate is a percentage of the working time of the air compressor to the running time of the vehicle;

[0141] Taking the plurality of first test vehicles as the target first test vehicles respectively, and obtaining the exhaust temperature of each of the first test vehicles;

[0142] The target exhaust temperature threshold is determined according to the exhaust temperature of each of the first test vehicles.

[0143] First test vehicles: vehicles of the same type as the target vehicle, whose operating time is greater than the first preset time.

[0144] Load rate: The percentage of air compressor working time to the first preset time.

[0145] Load rate threshold: The standard value used to determine the working load of the air compressor.

[0146] Target exhaust temperature threshold: a reference value determined based on exhaust temperatures of a plurality of first test vehicles.

[0147] Select first test vehicles of the same type as the target vehicle, whose operating time is greater than the first preset time, to ensure that the test vehicles have sufficient usage history to reflect real-world usage. During the test, ensure that the load rate of the air compressor is greater than the load rate threshold. This can be achieved by simulating the operation under normal vehicle use conditions, such as simulating high-intensity use by continuously running the air compressor. While controlling the load rate, collect the exhaust temperature of the target first test vehicle. These data will be used for subsequent analysis. Use multiple first test vehicles as target first test vehicles, obtain exhaust temperature data from each vehicle, and summarize these data. Determine a target exhaust temperature threshold based on the exhaust temperature data of all first test vehicles. This threshold will be used in subsequent fault detection to determine whether the air compressor is overheated.

[0148] By selecting the first test vehicle with a longer running time for testing, the test results can be ensured to be closer to the actual usage, thereby improving the accuracy of the determined target exhaust temperature threshold. By collecting exhaust temperature data under high load rate conditions, it can be ensured that the air compressor can still work normally when it is under a large load, thereby improving its reliability. Using the data of multiple first test vehicles for analysis can reduce false alarms caused by special circumstances of individual vehicles. Considering the characteristics of different vehicle types, the determined target exhaust temperature threshold can be better suitable for the target vehicle type.

[0149] Combine the following Figure 2 Introducing an application scenario of this method embodiment, see Figure 2 , Figure 2 This is an application example diagram of a method for detecting the reliability of an air compressor in a vehicle provided in an embodiment of the present application.

[0150] Figure 2 The basic structure of one of the application scenarios of this solution is shown, which consists of the following parts:

[0151] Gas cylinder: A place where compressed gas is stored, and the pressure changes inside are monitored by a pressure sensor.

[0152] Air compressor: responsible for compressing air to high pressure and storing it in air cylinders.

[0153] Air pressure sensor: monitors pressure changes in the gas cylinder and provides real-time data feedback.

[0154] Temperature sensor: monitors the exhaust temperature of the air compressor to prevent overheating.

[0155] Processor: Receives data from the air pressure sensor and temperature sensor, performs analysis and makes decisions.

[0156] Data Center / Cloud: Stores and processes data from processors for long-term monitoring and analysis.

[0157] Instrument panel: Displays vehicle status information, including the operating status of the air compressor.

[0158] This solution monitors the working status of the air compressor through air pressure sensors and temperature sensors. The processor analyzes the collected data and then sends the results to the data center / cloud and dashboard. When an abnormal situation is detected, such as the inflation time exceeds the threshold or the exhaust temperature is too high, the processor will send an alarm signal to the dashboard and upload the data to the data center / cloud for remote monitoring and analysis. This design can achieve real-time monitoring and remote management, improving vehicle safety and maintenance efficiency.

[0159] See also Figure 3 , Figure 3 A schematic diagram of a reliability detection method for an air compressor in a vehicle provided in an embodiment of the present application, the device comprises: an acquisition unit 201, a detection unit 202 and an alarm unit 203;

[0160] The acquisition unit is used to acquire multiple inflation time periods collected by the air compressor in the target vehicle within a first preset time period, and target inflation time thresholds corresponding to each unit pressure, wherein the inflation time is used to describe the time required for the gas cylinder to increase one unit pressure each time, and the gas cylinder is used to store the gas compressed by the air compressor, and the target inflation time threshold is the inflation time threshold of the target vehicle at the corresponding unit pressure;

[0161] The detection unit is used to determine a target number of inflating time periods that exceed the limit from the plurality of inflating time periods, wherein the inflating time that exceeds the limit is an inflating time period that is greater than a target inflating time threshold under a corresponding unit pressure;

[0162] The alarm unit is used to send an alarm for prompting a failure of the air compressor in the target vehicle if the target quantity is greater than a quantity threshold.

[0163] In a possible implementation, the device provided in the embodiment of the present application further includes a temperature detection unit:

[0164] The temperature measuring unit is used to obtain a plurality of exhaust temperatures collected from the air compressor in the target vehicle within a second preset time period, and a target temperature threshold, wherein the target temperature threshold is an exhaust temperature threshold corresponding to the target vehicle;

[0165] Based on the multiple exhaust temperatures, determine the duration of the exhaust temperature being greater than the target temperature threshold, where the duration is the duration corresponding to the multiple consecutive exhaust temperatures;

[0166] If the duration is longer than a time threshold, an alarm is sent to indicate an air compressor failure in the target vehicle.

[0167] In a possible implementation, the device provided in the embodiment of the present application further includes an exhaust temperature threshold unit:

[0168] The exhaust temperature threshold unit is used to obtain a plurality of first test vehicles of the same type as the target vehicle, wherein the first test vehicles are vehicles whose running time is greater than a first preset time;

[0169] For a target first test vehicle among the plurality of first test vehicles, collecting the exhaust temperature of the target first test vehicle when the load rate of the air compressor in the target first test vehicle is controlled to be greater than a load rate threshold, wherein the load rate is a percentage of the working time of the air compressor to the running time of the vehicle;

[0170] Taking the plurality of first test vehicles as the target first test vehicles respectively, and obtaining the exhaust temperature of each of the first test vehicles;

[0171] The target exhaust temperature threshold is determined according to the exhaust temperature of each of the first test vehicles.

[0172] In a possible implementation, the apparatus provided in the embodiment of the present application further includes a duration threshold unit:

[0173] The duration threshold unit further includes acquiring a plurality of second test vehicles of the same type as the target vehicle, wherein the same type means having the same gas cylinder type as the target vehicle or the same gas circuit system as the target vehicle;

[0174] For a target second test vehicle among the plurality of the second test vehicles, under the condition that the target second test vehicle is controlled in an idling condition, a plurality of calibrated inflation time durations of the air compressor in the target second test vehicle within a third preset time duration are collected, wherein the calibrated inflation time duration is used to describe the time duration required for the gas cylinder to increase one unit pressure, and each unit pressure has a corresponding calibrated inflation time duration;

[0175] Taking a plurality of the second test vehicles as the target second test vehicles respectively, and obtaining a plurality of calibrated inflation times of the respective second test vehicles;

[0176] For a target unit pressure among the plurality of unit pressures, determining a target inflation time threshold corresponding to the target unit pressure according to the calibrated inflation time corresponding to the target unit pressure for each of the second test vehicles;

[0177] The multiple unit pressures are respectively used as the target unit pressures to obtain multiple target inflation time thresholds.

[0178] In a possible implementation, the duration threshold unit provided in the embodiment of the present application includes an abnormality removal subunit:

[0179] The abnormality removal subunit is used to obtain a maximum inflation value and a minimum inflation value, wherein the maximum inflation value is determined based on a vehicle having a running time greater than a second running time, and the minimum inflation value is determined based on a vehicle having a running time less than a first running time, and the second running time is greater than the first running time;

[0180] From the plurality of calibrated inflation times corresponding to the target unit pressure of each of the second test vehicles, remove the calibrated inflation times greater than the maximum inflation value and remove the calibrated inflation times less than the minimum inflation value to obtain a pending inflation time;

[0181] According to the pending inflation time, a target inflation time threshold corresponding to the target unit pressure is determined.

[0182] In a possible implementation, the abnormality removal subunit provided in the embodiment of the present application includes the following implementation:

[0183] The maximum pending inflation time among the plurality of pending inflation time, is used to determine the target inflation time threshold corresponding to the target unit pressure; or

[0184] The target inflation time threshold corresponding to the target unit pressure is determined according to the to-be-determined inflation time and the type of the target vehicle.

[0185] The names of the messages or information exchanged between multiple devices in the embodiments of the present application are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0186] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0187] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0188] Based on the above embodiments, an embodiment of the present application provides a vehicle, characterized in that the vehicle includes an air pressure sensor and a processor;

[0189] The air pressure sensor is used to obtain multiple air-inflation durations collected from the air compressor in the target vehicle within a first preset duration, wherein the air-inflation duration is used to describe the duration required for the gas cylinder to increase one unit of pressure, and the gas cylinder is used to store the gas compressed by the air compressor;

[0190] The processor is used to obtain the target inflation time threshold corresponding to each unit pressure, wherein the target inflation time threshold is the inflation time threshold of the target vehicle under the corresponding unit pressure;

[0191] Determine a target number of inflating time periods that exceed the limit from the plurality of inflating time periods, wherein the inflating time that exceeds the limit is an inflating time period that is greater than a target inflating time threshold under a corresponding unit pressure;

[0192] If the target quantity is greater than a quantity threshold, an alarm is sent to indicate an air compressor failure in the target vehicle.

[0193] Based on the above embodiments, an embodiment of the present application provides a computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method described in the above method embodiments.

[0194] Based on the above embodiments, an embodiment of the present application provides a computer program product, characterized in that it includes a computer program or instructions; when the computer program or instructions are executed by a processor, the method described in the above method embodiments is executed.

[0195] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A reliability detection method for an air compressor in a vehicle, characterized in that: The method comprises: Acquire multiple inflation time periods collected by the air compressor in the target vehicle within a first preset time period, and target inflation time thresholds corresponding to each unit pressure, wherein the inflation time period is used to describe the time required for the gas cylinder to increase one unit pressure each time, and the gas cylinder is used to store the gas compressed by the air compressor, and the target inflation time threshold is the inflation time threshold of the target vehicle at the corresponding unit pressure; Acquire a plurality of second test vehicles of the same type as the target vehicle, wherein the same type means having the same gas cylinder type as the target vehicle or the same gas circuit system as the target vehicle; For a target second test vehicle among the plurality of the second test vehicles, under the condition that the target second test vehicle is controlled in an idling condition, a plurality of calibrated inflation time durations of the air compressor in the target second test vehicle within a third preset time duration are collected, wherein the calibrated inflation time duration is used to describe the time duration required for the gas cylinder to increase one unit pressure, and each unit pressure has a corresponding calibrated inflation time duration; Taking a plurality of the second test vehicles as the target second test vehicles respectively, and obtaining a plurality of calibrated inflation times of the respective second test vehicles; For a target unit pressure among the plurality of unit pressures, determining a target inflation time threshold corresponding to the target unit pressure according to the calibrated inflation time corresponding to the target unit pressure for each of the second test vehicles; Taking the plurality of unit pressures as the target unit pressures respectively, and obtaining a plurality of target inflation time thresholds; Determine a target number of inflating time periods that exceed the limit from the plurality of inflating time periods, wherein the inflating time that exceeds the limit is an inflating time period that is greater than a target inflating time threshold under a corresponding unit pressure; If the target quantity is greater than a quantity threshold, an alarm is sent to indicate an air compressor failure in the target vehicle.

2. The method according to claim 1, characterized in that The method further comprises: Acquire multiple exhaust temperatures collected from the air compressor in the target vehicle within a second preset time period, and a target temperature threshold, where the target temperature threshold is the exhaust temperature threshold corresponding to the target vehicle; Based on the multiple exhaust temperatures, determine the duration of the exhaust temperature being greater than the target temperature threshold, where the duration is the duration corresponding to the multiple consecutive exhaust temperatures; If the duration is longer than a time threshold, an alarm is sent to indicate an air compressor failure in the target vehicle.

3. The method according to claim 2, characterized in that The method further comprises: Acquire a plurality of first test vehicles of the same type as the target vehicle, wherein the first test vehicles are vehicles whose running time is greater than a first preset time; For a target first test vehicle among the plurality of first test vehicles, collecting the exhaust temperature of the target first test vehicle when the load rate of the air compressor in the target first test vehicle is controlled to be greater than a load rate threshold, wherein the load rate is a percentage of the working time of the air compressor to the running time of the vehicle; Taking the plurality of first test vehicles as the target first test vehicles respectively, and obtaining the exhaust temperature of each of the first test vehicles; The target temperature threshold is determined according to the exhaust gas temperature of each of the first test vehicles.

4. The method according to claim 1, characterized in that The determining, according to the calibrated inflation time corresponding to the target unit pressure of each of the second test vehicles, the target inflation time threshold corresponding to the target unit pressure includes: Obtaining a maximum inflation value and a minimum inflation value, wherein the maximum inflation value is determined based on a vehicle having a running time greater than a second running time, and the minimum inflation value is determined based on a vehicle having a running time less than a first running time, and the second running time is greater than the first running time; From the plurality of calibrated inflation times corresponding to the target unit pressure of each of the second test vehicles, remove the calibrated inflation times greater than the maximum inflation value and remove the calibrated inflation times less than the minimum inflation value to obtain a pending inflation time; According to the pending inflation time, a target inflation time threshold corresponding to the target unit pressure is determined.

5. The method according to claim 4, characterized in that The step of determining the target inflation time threshold corresponding to the target unit pressure according to the to-be-determined inflation time comprises: The maximum pending inflation time among the plurality of pending inflation time, is used to determine the target inflation time threshold corresponding to the target unit pressure; or The target inflation time threshold corresponding to the target unit pressure is determined according to the to-be-determined inflation time and the type of the target vehicle.

6. A reliability detection device for an air compressor in a vehicle, characterized in that: The device comprises: an acquisition unit, a detection unit and an alarm unit; The acquisition unit is used to acquire multiple inflation time periods collected by the air compressor in the target vehicle within a first preset time period, and target inflation time thresholds corresponding to each unit pressure, wherein the inflation time is used to describe the time required for the gas cylinder to increase one unit pressure each time, and the gas cylinder is used to store the gas compressed by the air compressor, and the target inflation time threshold is the inflation time threshold of the target vehicle at the corresponding unit pressure; The acquisition unit is further used to acquire a plurality of second test vehicles of the same type as the target vehicle, wherein the same type means that the gas cylinder type is the same as that of the target vehicle, or the gas circuit system is the same as that of the target vehicle; The acquisition unit is further used to collect, for a target second test vehicle among the plurality of second test vehicles, a plurality of calibrated inflation durations of the air compressor in the target second test vehicle within a third preset duration while controlling the target second test vehicle to be in an idle condition, wherein the calibrated inflation duration is used to describe the duration required for the gas cylinder to increase one unit pressure, and each unit pressure has a corresponding calibrated inflation duration; The acquisition unit is further used to use the plurality of second test vehicles as the target second test vehicles respectively, and obtain a plurality of calibrated inflation time lengths of each of the second test vehicles; The acquisition unit is further used to determine, for a target unit pressure among the multiple unit pressures, a target inflation time threshold corresponding to the target unit pressure according to the calibrated inflation time corresponding to the target unit pressure of each second test vehicle; The acquisition unit is further used to use the plurality of unit pressures as the target unit pressures respectively to obtain a plurality of target inflation time thresholds; The detection unit is used to determine a target number of inflating time periods that exceed the limit from the plurality of inflating time periods, wherein the inflating time that exceeds the limit is an inflating time period that is greater than a target inflating time threshold under a corresponding unit pressure; The alarm unit is used to send an alarm for prompting a failure of the air compressor in the target vehicle if the target quantity is greater than a quantity threshold.

7. A vehicle, characterized in that: The vehicle includes an air pressure sensor and a processor; The air pressure sensor is used to obtain multiple air-inflation durations collected from the air compressor in the target vehicle within a first preset duration, wherein the air-inflation duration is used to describe the duration required for the gas cylinder to increase one unit of pressure, and the gas cylinder is used to store the gas compressed by the air compressor; The processor is used to obtain the target inflation time threshold corresponding to each unit pressure, wherein the target inflation time threshold is the inflation time threshold of the target vehicle under the corresponding unit pressure; Acquire a plurality of second test vehicles of the same type as the target vehicle, wherein the same type means having the same gas cylinder type as the target vehicle or the same gas circuit system as the target vehicle; For a target second test vehicle among the plurality of the second test vehicles, under the condition that the target second test vehicle is controlled in an idling condition, a plurality of calibrated inflation time durations of the air compressor in the target second test vehicle within a third preset time duration are collected, wherein the calibrated inflation time duration is used to describe the time duration required for the gas cylinder to increase one unit pressure, and each unit pressure has a corresponding calibrated inflation time duration; Taking a plurality of the second test vehicles as the target second test vehicles respectively, and obtaining a plurality of calibrated inflation times of the respective second test vehicles; For a target unit pressure among the plurality of unit pressures, determining a target inflation time threshold corresponding to the target unit pressure according to the calibrated inflation time corresponding to the target unit pressure for each of the second test vehicles; Taking the plurality of unit pressures as the target unit pressures respectively, and obtaining a plurality of target inflation time thresholds; Determine a target number of inflating time periods that exceed the limit from the plurality of inflating time periods, wherein the inflating time that exceeds the limit is an inflating time period that is greater than a target inflating time threshold under a corresponding unit pressure; If the target quantity is greater than a quantity threshold, an alarm is sent to indicate an air compressor failure in the target vehicle.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method according to any one of claims 1 to 5.

9. A computer program product, characterized in that The method comprises a computer program or an instruction; when the computer program or the instruction is executed by a processor, the method according to any one of claims 1 to 5 is executed.

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