Tire pressure abnormity determination method and device and computer equipment

Abstract

The invention relates to the technical field of vehicles, in particular to a tire pressure abnormity determination method and device and computer equipment. The method comprises the steps that in the vehicle running process, the current tire pressure value of a tire in a vehicle is obtained; when it is determined that the current tire pressure value meets the tire pressure early warning condition, current tire pressure associated data of the tire are obtained; the current tire pressure associated data comprises current vehicle driving data and current vehicle load data; according to the difference between the current tire pressure associated data and standard tire pressure associated data of the vehicle, determining a tire pressure associated risk value corresponding to the current tire pressure associated data; wherein a tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value; and determining whether the tire pressure of the tire is abnormal or not according to the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method, device and computer equipment for determining abnormal tire pressure. Background Art

[0002] Vehicle tire pressure monitoring refers to a technology that automatically monitors tire pressure in real time while the car is driving.

[0003] At present, direct tire pressure monitoring uses a pressure sensor installed inside each tire to directly measure the tire pressure. The sensor sends the collected pressure data to the central receiver module through a wireless transmitter, and then displays the tire pressure and other related data in the cab. When the tire pressure is too low or leaking, the system will automatically alarm and remind the driver to deal with it in time.

[0004] However, traditional technology solutions can only issue warnings after tire pressure has deviated from the normal range, and lack the ability to predict and intervene in advance. Summary of the invention

[0005] Based on this, it is necessary to provide a tire pressure abnormality determination method, device and computer equipment that can predict tire pressure abnormalities in advance to address the above technical problems.

[0006] In a first aspect, the present application provides a method for determining abnormal tire pressure, the method comprising:

[0007] During the driving of the vehicle, the current tire pressure value of the tire in the vehicle is obtained;

[0008] When it is determined that the current tire pressure value meets the tire pressure warning condition, the current tire pressure associated data of the tire is obtained; the current tire pressure associated data includes the current vehicle driving data and the current vehicle load data;

[0009] Determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value;

[0010] Determine whether the tire pressure is abnormal based on the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0011] In one embodiment, determining a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle includes:

[0012] determining a first tire pressure influence value corresponding to the current vehicle driving data according to a first difference between the current vehicle driving data and the standard vehicle driving data in the standard tire pressure associated data;

[0013] determining a second tire pressure influence value corresponding to the current vehicle load data according to a second difference between the current vehicle load data and the standard vehicle load data in the standard tire pressure associated data;

[0014] A tire pressure associated risk value corresponding to the current tire pressure associated data is determined according to the first tire pressure impact value and the second tire pressure impact value.

[0015] In one embodiment, the current vehicle driving data includes the current vehicle speed, and the standard vehicle driving data includes the standard vehicle speed;

[0016] Determining a first tire pressure impact value corresponding to the current vehicle driving data according to a first difference between the current vehicle driving data and the standard vehicle driving data in the standard tire pressure associated data includes:

[0017] If the current vehicle speed is less than the standard vehicle speed, the set tire pressure impact value corresponding to the standard vehicle speed is determined as the first tire pressure impact value corresponding to the current vehicle driving data;

[0018] If the current vehicle speed is greater than or equal to the standard vehicle speed, the speed difference between the current vehicle speed and the standard vehicle speed is determined, and the first tire pressure influence value corresponding to the current vehicle driving data is determined based on a first weight coefficient corresponding to the speed difference and a second weight coefficient corresponding to the square of the speed difference.

[0019] In one of the embodiments, the current tire pressure associated data also includes current vehicle external environment data and / or current tire temperature data;

[0020] Determining a tire pressure associated risk value corresponding to the current tire pressure associated data according to the first tire pressure impact value and the second tire pressure impact value, including:

[0021] determining a third tire pressure impact value corresponding to the current vehicle external environment data according to a third difference between the current vehicle external environment data and the standard vehicle external environment data in the standard tire pressure associated data;

[0022] determining a fourth tire pressure influence value corresponding to the current tire temperature data according to a fourth difference between the current tire temperature data and the standard tire temperature data in the standard tire pressure associated data;

[0023] A tire pressure associated risk value corresponding to the current tire pressure associated data is determined according to the third tire pressure influence value and / or the fourth tire pressure influence value, the first tire pressure influence value, and the second tire pressure influence value.

[0024] In one embodiment, the current vehicle external environment data includes current external road data, and the third difference includes a road condition difference;

[0025] Determining a third tire pressure impact value corresponding to the current vehicle external environment data according to a third difference between the current vehicle external environment data and the standard vehicle external environment data in the standard tire pressure associated data includes:

[0026] determining a road tire pressure influence value corresponding to the current external road data according to a third difference between the current external road data and the standard external road data in the standard tire pressure associated data;

[0027] The road tire pressure impact value is determined as the third tire pressure impact value corresponding to the current vehicle external environment data.

[0028] In one embodiment, determining whether the current tire pressure value satisfies the tire pressure warning condition includes:

[0029] Determine the tire pressure difference between the current tire pressure value and the initial tire pressure value corresponding to the tire;

[0030] If the current tire pressure value is less than the initial tire pressure value, and the tire pressure difference value is within the set tire pressure warning range, it is determined that the current tire pressure value meets the tire pressure warning condition;

[0031] The initial tire pressure value is the standard tire pressure value collected when the vehicle is stationary.

[0032] In one embodiment, the standard tire pressure value of the tire is determined according to the tire type of the tire and the climate environment during the driving of the vehicle.

[0033] In one embodiment, determining whether the tire pressure of the vehicle tire is abnormal according to the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value includes:

[0034] Determine the tire pressure risk value corresponding to the current tire pressure value according to the tire pressure difference between the current tire pressure value and the standard tire pressure value corresponding to the tire;

[0035] The product of the tire pressure risk value and the tire pressure associated risk value is determined as the current tire pressure risk value;

[0036] Obtaining, from the historical tire pressure abnormality records of the vehicle, a historical tire pressure risk value corresponding to historical tire pressure associated data similar to the current tire pressure associated data;

[0037] If it is determined that the current tire pressure risk value reaches the historical tire pressure risk value, it is determined that the tire pressure of the tire is abnormal.

[0038] In a second aspect, the present application also provides a tire pressure abnormality determination device, the device comprising:

[0039] The tire pressure monitoring module is used to obtain the current tire pressure value of the vehicle tire during driving;

[0040] The abnormality judgment module is used to obtain the current tire pressure associated data of the tire when it is determined that the current tire pressure value meets the tire pressure warning condition; the current tire pressure associated data includes the current vehicle driving data and the current vehicle load data;

[0041] An impact prediction module, used to determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value;

[0042] The tire pressure warning module is used to determine whether there is an abnormality in the tire pressure according to the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0043] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0044] During the driving of the vehicle, the current tire pressure value of the tire in the vehicle is obtained;

[0045] When it is determined that the current tire pressure value meets the tire pressure warning condition, the current tire pressure associated data of the tire is obtained; the current tire pressure associated data includes the current vehicle driving data and the current vehicle load data;

[0046] Determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value;

[0047] Determine whether the tire pressure is abnormal based on the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0048] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0049] During the driving of the vehicle, the current tire pressure value of the tire in the vehicle is obtained;

[0050] When it is determined that the current tire pressure value meets the tire pressure warning condition, the current tire pressure associated data of the tire is obtained; the current tire pressure associated data includes the current vehicle driving data and the current vehicle load data;

[0051] Determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value;

[0052] Determine whether the tire pressure is abnormal based on the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0053] In a fifth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0054] During the driving of the vehicle, the current tire pressure value of the tire in the vehicle is obtained;

[0055] When it is determined that the current tire pressure value meets the tire pressure warning condition, the current tire pressure associated data of the tire is obtained; the current tire pressure associated data includes the current vehicle driving data and the current vehicle load data;

[0056] Determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value;

[0057] Determine whether the tire pressure is abnormal based on the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0058] The above-mentioned tire pressure abnormality determination method, device and computer equipment, the present application first determines whether the current tire pressure value meets the tire pressure warning condition. If so, it means that the tire pressure begins to slowly drop or rise. In this case, based on the current vehicle driving data and the current vehicle load data in the current tire pressure associated data, the tire pressure associated risk value corresponding to the current tire pressure associated data is determined. The current vehicle driving data and the current vehicle load data in the current tire pressure associated data can more comprehensively reflect the influence of external factors (external factors include driving factors and load factors) on the tire pressure, predict the possible changes in tire pressure in the future period of time, and obtain accurate tire pressure associated risk value. Finally, combined with the tire pressure own risk value corresponding to the current tire pressure value and the tire pressure associated risk value, it is determined whether there is an abnormality in the tire pressure of the tire, thereby improving the comprehensiveness and accuracy of the judgment of tire pressure abnormality and realizing the function of predicting tire pressure abnormality. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0060] Figure 1 is a flow chart of a method for determining abnormal tire pressure in one embodiment;

[0061] Figure 2 A schematic diagram of a flow chart of a step of determining that a current tire pressure value satisfies a tire pressure warning condition in an embodiment;

[0062] Figure 3 It is a flowchart of a step of determining a tire pressure associated risk value corresponding to current tire pressure associated data in one embodiment;

[0063] Figure 4 A schematic flow chart of a step of determining a tire pressure associated risk value corresponding to current tire pressure associated data in another embodiment;

[0064] Figure 5 A schematic flow chart of the steps of determining whether the tire pressure of a vehicle tire is abnormal in one embodiment;

[0065] Figure 6 is a structural block diagram of a device for determining abnormal tire pressure in one embodiment;

[0066] Figure 7 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0068] In an exemplary embodiment, Figure 1 As shown, a method for determining abnormal tire pressure is provided, which is applied to a computer device, and the method includes:

[0069] S101, obtaining the current tire pressure value of the tire in the vehicle during driving of the vehicle.

[0070] Optionally, the current tire pressure value of each tire in the vehicle is obtained through the tire pressure sensor installed on each tire. It is understandable that the tire pressure sensor is also called a tire pressure sensor or a TPMS (Tire Pressure Monitoring System) sensor, which is a device used to monitor the tire pressure of a car. It can monitor the air pressure inside the tire in real time and immediately issue an alarm when abnormal tire pressure is found to remind the driver to take appropriate measures to ensure driving safety.

[0071] Optionally, tire pressure sensors include direct and indirect types. Among them, 1) Direct monitoring type: The tire pressure is directly measured by the pressure sensor installed in each tire. When the air pressure inside the tire changes, the tire pressure sensor will send the information to the vehicle's central processor. The central processor will compare the preset tire pressure value with the actual detected tire pressure value, and will issue an alarm if an abnormality is found. 2) Indirect monitoring type: The tire pressure is calculated by monitoring the speed of wheel rotation. When the air pressure of a tire decreases, the weight of the vehicle will reduce the rolling radius of the wheel, causing it to rotate faster than other wheels, thereby inferring abnormal tire pressure.

[0072] For example, during the driving process of the vehicle, each tire pressure sensor collects the current tire pressure value of each tire at a sampling frequency of 1 Hz, and the current tire pressure values ​​collected for the four tires are: the current tire pressure value of the left front tire , Current tire pressure of the right front tire , Current tire pressure of the left rear tire , and the current tire pressure of the right rear tire .

[0073] S102, when it is determined that the current tire pressure value meets the tire pressure warning condition, obtaining current tire pressure associated data of the tire.

[0074] Among them, the tire pressure warning condition may be that the tire pressure of the vehicle tire deviates from the normal tire pressure range or the recommended tire pressure range. If the deviation value of the current tire pressure value relative to the standard tire pressure value falls into the deviation tire pressure range, it is determined that the current tire pressure value meets the tire pressure warning condition. The tire pressure deviation may include excessive or low tire pressure. The tire pressure deviation from the normal or recommended range may have adverse effects on vehicle driving safety, tire service life, and driving experience.

[0075] It is understood that tire pressure-related data refers to other data closely related to tire pressure that needs to be considered in addition to the current tire pressure value directly measured when evaluating the tire pressure condition of the vehicle. Exemplarily, tire pressure-related data may include: 1) Tire pressure history data: Obtain tire pressure records over a period of time in the past to observe the trend of tire pressure changes. Analyzing tire pressure history data can help identify whether tire pressure abnormalities occur suddenly or develop gradually. 2) Tire temperature data: Tire temperature is one of the important factors affecting tire pressure. Obtaining the current temperature and historical temperature data of the tire helps to analyze whether tire pressure abnormalities are related to temperature changes. 3) Vehicle driving data: Obtain the vehicle's recent mileage, driving speed, driving time and other data to analyze whether tire pressure abnormalities are related to vehicle usage. 4) Tire wear: Check the degree of wear, tread depth, and whether there are abnormal phenomena such as cracks and bulges on the tire. Tire wear can provide clues about the possible causes of tire pressure abnormalities. For example, excessive wear may indicate that tire pressure is too low for a long time. 5) Vehicle load: Understand the current load of the vehicle, including the number of passengers, luggage weight, etc. The vehicle load has an impact on tire pressure. Excessive load may cause the tire pressure to be too high. 6) Environmental data: Get the current ambient temperature, humidity, air pressure and other data to analyze whether these factors have an impact on tire pressure. In some cases, extreme environmental conditions may cause abnormal tire pressure. 7) Tire specifications and types: Confirm the tire specifications (such as tire size, rim diameter, etc.) and types (such as summer tires, winter tires, all-season tires, etc.). Different tire specifications and types have different requirements for tire pressure. Make sure to use the correct tire pressure value for comparison.

[0076] Among them, the current tire pressure related data includes the current vehicle driving data and the current vehicle load data.

[0077] It is understood that the current vehicle driving data refers to a series of parameters related to the vehicle's motion state generated during the vehicle's driving process. These parameters can reflect the vehicle's current driving conditions, such as speed, acceleration, mileage, etc. Optionally, the vehicle's current driving data can be acquired in real time using a vehicle-mounted sensor, a vehicle diagnostic interface, or a vehicle-mounted information system.

[0078] It is understood that the current vehicle load data refers to the weight of the cargo or passengers currently carried by the vehicle. This data is crucial for evaluating the tire pressure of the vehicle tires, because the load will directly affect the tire pressure. Optionally, the current vehicle load data can be obtained in real time by using a vehicle-mounted weighing sensor, a vehicle diagnostic interface, or manual estimation.

[0079] S103, determining a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle.

[0080] Among them, the tire pressure standard risk value corresponding to the standard tire pressure associated data is within the safety threshold value.

[0081] It is understood that standard tire pressure-related data refers to standard condition data recommended by vehicle manufacturers or tire manufacturers, such as standard load, standard driving speed, standard road conditions, etc., and under such standard conditions, the tire pressure is within a reasonable and safe range. These standard condition data are usually provided by manufacturers and take into account the design performance, service life and safety of the tire. Standard tire pressure-related data provides a benchmark for evaluating the tire pressure condition. By comparing with the current tire pressure-related data, it can be determined whether the tire pressure is normal or whether there is an abnormal risk.

[0082] The safety threshold value refers to the maximum or minimum deviation range of the tire pressure risk value without affecting the performance and safety of the tire. This value is usually determined by the manufacturer based on factors such as the tire's design parameters, material properties, and actual usage experience. The safety threshold value is used to ensure that the tire pressure is always kept within a safe and reasonable range. When the tire pressure risk value exceeds this range, it may cause safety hazards, such as increased tire wear and increased risk of tire blowout.

[0083] Optionally, the tire pressure-related risk value may be a risk value calculated by a mathematical model based on the difference between the current tire pressure-related data and the standard tire pressure-related data. This risk value reflects the extent to which the tire pressure may deviate from the normal value under the current driving conditions and load.

[0084] S104, determining whether there is an abnormality in the tire pressure of the vehicle tire according to the tire pressure inherent risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0085] Optionally, the tire pressure risk value is a risk indicator determined based on the difference between the current tire pressure value and the standard tire pressure value. The tire pressure-related risk value is a risk value determined after comprehensively considering other data closely related to the tire pressure (i.e., tire pressure-related data). These tire pressure-related data include but are not limited to the aforementioned vehicle driving data (such as speed, mileage, etc.), load data, tire temperature data, and external environment data (such as temperature, humidity, road conditions, etc.).

[0086] Furthermore, the calculated tire pressure risk value and tire pressure-related risk value are combined in some way, such as adding them together or adding them according to a certain weight, to obtain a total risk value. A threshold for abnormality determination is set. When the total risk value reaches the threshold for abnormality determination, tire pressure warning information is issued to the driver through the vehicle display screen, mobile phone application, etc. The warning information should include the current tire pressure value, standard tire pressure value, tire pressure-related risk value, and recommended measures (such as checking the tires, adjusting the tire pressure, etc.).

[0087] In the above-mentioned method for determining tire pressure abnormality, the present application first determines whether the current tire pressure value satisfies the tire pressure warning condition. If so, it means that the tire pressure begins to slowly drop or rise. In this case, based on the current vehicle driving data and the current vehicle load data in the current tire pressure-related data, the tire pressure-related risk value corresponding to the current tire pressure-related data is determined. The current vehicle driving data and the current vehicle load data in the current tire pressure-related data can more comprehensively reflect the influence of external factors (external factors include driving factors and load factors) on the tire pressure, predict the possible changes in tire pressure in the future, and obtain accurate tire pressure-related risk values. Finally, the tire pressure risk value corresponding to the current tire pressure value and the tire pressure-related risk value are combined to determine whether there is an abnormality in the tire pressure of the vehicle, thereby improving the comprehensiveness and accuracy of the judgment on tire pressure abnormality and realizing the function of predicting tire pressure abnormality.

[0088] In an exemplary embodiment, Figure 2 As shown, determining that the current tire pressure value meets the tire pressure warning condition includes:

[0089] S201, determining a tire pressure difference between a current tire pressure value and an initial tire pressure value corresponding to the tire.

[0090] The initial tire pressure value is the standard tire pressure value collected when the vehicle is stationary. It is usually collected when the vehicle is stationary (such as after parking) and can be considered as the baseline tire pressure before normal use. The initial tire pressure value may be stored in the vehicle's electronic control unit, or manually set and recorded by the driver at a specific time.

[0091] Optionally, the current tire pressure value is compared with the initial tire pressure value to calculate the difference therebetween, which reflects the change in tire pressure since the initial measurement.

[0092] S202: If the current tire pressure value is less than the initial tire pressure value, and the tire pressure difference value is within the set tire pressure warning range, it is determined that the current tire pressure value meets the tire pressure warning condition.

[0093] The tire pressure warning interval is a preset tire pressure difference range used to determine whether the tire pressure has changed significantly, which may cause abnormal risks. The setting of the tire pressure warning interval should be based on factors such as the vehicle manufacturer's recommendations, tire specifications, usage conditions, and safety considerations.

[0094] Optionally, for the case where the tire pressure deviation is a decrease: if the current tire pressure value is less than the initial tire pressure value, it means that the vehicle's tire pressure has begun to slowly decrease, and the above tire pressure difference is compared with the set warning interval. If the tire pressure difference is outside the set tire pressure warning interval, it is determined that the degree of decrease has not directly reached the abnormal degree. For example, the tire pressure warning interval is [decline limit value, -0.2] (unit: bar). If the tire pressure difference is -0.1bar and falls outside [decline limit value, -0.2], it is determined that the current tire pressure value does not meet the tire pressure warning condition; if the tire pressure difference is -0.3bar and falls within [decline limit value, -0.2], it is determined that the current tire pressure value meets the tire pressure warning condition; wherein the descent limit value may be the limit value obtained by performing an extreme test on the tire descent condition.

[0095] Optionally, for the case where the tire pressure deviation is increasing: if the current tire pressure value is greater than the initial tire pressure value, it means that the vehicle's tire pressure has begun to rise slowly, and the above tire pressure difference is compared with the set warning interval. If the tire pressure difference is outside the set tire pressure warning interval, it is determined that the degree of decline has not directly reached the abnormal level. For example, the tire pressure warning interval is [0.3, increase limit value] (unit: bar), if the tire pressure difference is +0.1bar, which falls outside [0.3, increase limit value], it is determined that the current tire pressure value does not meet the tire pressure warning conditions; if the tire pressure difference is +0.4bar and falls within [0.3, increase limit value], it is determined that the current tire pressure value meets the tire pressure warning conditions; wherein the increase limit value may be the limit value obtained by performing an extreme test on the tire increase condition.

[0096] In this embodiment, the tire pressure difference between the current tire pressure value and the initial tire pressure value corresponding to the tire can be used to timely detect abnormal changes in tire pressure and take corresponding measures to prevent possible safety hazards.

[0097] In an exemplary embodiment, Figure 3 As shown, according to the difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle, the tire pressure associated risk value corresponding to the current tire pressure associated data is determined, including:

[0098] S301, determining a first tire pressure influence value corresponding to the current vehicle driving data according to a first difference between the current vehicle driving data and the standard vehicle driving data in the standard tire pressure associated data.

[0099] Optionally, standard tire pressure associated data matching the tire is obtained from information provided by the vehicle manufacturer or tire manufacturer; for example, the standard tire pressure associated data may include standard vehicle driving data (such as at standard driving speed, acceleration and mileage) and its corresponding tire pressure impact value.

[0100] Furthermore, the current vehicle driving data is compared with the standard vehicle driving data one by one to identify the difference between the two, that is, the first difference. The first difference is quantified, for example, the deviation value between the current speed and the standard vehicle speed is calculated.

[0101] In one possible implementation, a first mathematical model is established based on the physical relationship between vehicle driving data and tire pressure values. The first mathematical model should be able to consider the impact of multiple driving parameters on tire pressure and output tire pressure impact values. Then, the quantified first difference value is input into the first mathematical model as an input parameter of the model. Using the first mathematical model, the first tire pressure impact value corresponding to the current vehicle driving data is calculated based on the input first difference value, and the first tire pressure impact value is proportional to the first difference. Optionally, the calculated first tire pressure impact value is displayed to the driver or vehicle management system in the form of a numerical value or a graph.

[0102] In this embodiment, the current vehicle driving data includes the current vehicle speed , standard vehicle driving data includes standard vehicle speed.

[0103] Accordingly, according to the difference between the current vehicle driving data and the standard vehicle driving data in the standard tire pressure associated data, determining the first tire pressure impact value corresponding to the current vehicle driving data includes:

[0104] In another possible implementation, the following two situations may be adopted:

[0105] Case 1: If the current vehicle speed is less than the standard vehicle speed, the set tire pressure impact value corresponding to the standard vehicle speed is determined as the first tire pressure impact value corresponding to the current vehicle driving data. express.

[0106] It is understood that the standard vehicle speed may represent a low speed range, such as less than speed range; if the current vehicle speed < standard speed 40km / h, then determine the first tire pressure impact value When , the following formula (1) is used:

[0107] (1)

[0108] in, To set the tire pressure impact value.

[0109] Case 2: If the current vehicle speed is greater than or equal to the standard vehicle speed, the speed difference between the current vehicle speed and the standard vehicle speed is determined, and the first tire pressure influence value corresponding to the current vehicle driving data is determined based on the first weight coefficient corresponding to the speed difference and the second weight coefficient corresponding to the square of the speed difference.

[0110] Optionally, record the standard vehicle speed as The speed difference is ;

[0111] If the current vehicle speed is greater than or equal to the standard vehicle speed, the first tire pressure affects the value Determine using the following formula (2):

[0112] (2)

[0113] in, is the second weight coefficient corresponding to the square of the vehicle speed difference; is the first weight coefficient corresponding to the vehicle speed difference.

[0114] It is understandable that different calculation methods are used to determine the tire pressure impact value according to different ranges of vehicle speed, which improves the accuracy and sensitivity of the calculation. This dynamic adjustment method makes tire pressure management more flexible and adaptable, which helps to enhance driving safety, optimize tire service life and improve driving experience.

[0115] S302, determining a second tire pressure influence value corresponding to the current vehicle load data according to a second difference between the current vehicle load data and the standard vehicle load data in the standard tire pressure associated data.

[0116] Optionally, standard tire pressure associated data matching the tire is obtained from information provided by the vehicle manufacturer or tire manufacturer, and the standard tire pressure associated data may include standard vehicle load data.

[0117] Specifically, the current vehicle load data is compared with the standard vehicle load data, and the difference between the two, i.e., the second difference, is identified. The second difference is quantified, for example, a deviation value between the current vehicle load data and the standard vehicle load data is calculated, and the deviation value is expressed in kilograms (kg) or percentage (%).

[0118] In one possible implementation, based on the physical relationship between vehicle load and tire pressure, a second mathematical model is established. The model should be able to consider the impact of load changes on tire pressure and output tire pressure impact values. For example, the model can use statistical methods such as linear regression and polynomial regression, or a simulation model based on physical principles. The quantified second difference value is input into the second mathematical model as an input parameter of the model. Using the second mathematical model, the second tire pressure impact value corresponding to the current vehicle load data is calculated based on the input second difference value. The second tire pressure impact value is proportional to the second difference. Optionally, the calculated second tire pressure impact value can be displayed to the driver or vehicle management system in the form of a numerical value or a graph.

[0119] Exemplarily, the current vehicle load data N is estimated based on the factory mass of the vehicle and the number of people on the vehicle seats.

[0120] Assuming that the average weight of each passenger is 60kg, the calculation method for estimating the current vehicle load data N is: N = vehicle factory mass + X*60kg;

[0121] Wherein, X is the number of people on the vehicle seat, and X is a positive integer.

[0122] In this embodiment, the standard vehicle load data is N0, then (N-N0) is the quantified second difference, and the second tire pressure impact value is express.

[0123] In another possible implementation, the second tire pressure influence value It can be determined by the following formula (3):

[0124] (3)

[0125] in, is a proportional coefficient that is proportional to the second tire pressure influence value and the second difference, and the coefficient may be a calibration coefficient.

[0126] S303: Determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to the first tire pressure impact value and the second tire pressure impact value.

[0127] In one possible implementation, a prediction model is selected, for example, the prediction model can be a linear regression model, a nonlinear regression model, a machine learning algorithm (such as a random forest, a neural network, etc.) or a deep learning model, etc. The current tire pressure associated data, the first tire pressure impact value and the second tire pressure impact value are used as input data, and according to the selected prediction model, the input data is substituted into the model for calculation to obtain the predicted tire pressure associated risk value. The predicted tire pressure associated risk value is output, and this value represents the possible change amount or change trend of the tire pressure under the current conditions.

[0128] In another possible implementation, the first tire pressure impact value and the second tire pressure impact value are weighted or multiplied using corresponding weights to obtain a tire pressure associated risk value corresponding to the current tire pressure associated data.

[0129] In this embodiment, accurate prediction and dynamic management of tire pressure risk values ​​are achieved by accurately analyzing the impact of current vehicle driving data and current vehicle load data on tire pressure.

[0130] In an exemplary embodiment, the current tire pressure associated data further includes current vehicle outer ring data and / or current tire temperature data.

[0131] Among them, the current vehicle external environment data refers to the external environment conditions in which the vehicle is currently traveling.

[0132] Optionally, the current vehicle external environment data may include: 1) Weather conditions: such as temperature, humidity, rain, snow, haze, etc. These weather conditions directly affect the grip, braking performance and wear of the tires. 2) Road conditions: such as road material (asphalt, cement, gravel, etc.), road wetness, road slope, etc. These factors will affect the driving stability of the vehicle and the wear rate of the tires. 3) Traffic conditions: such as traffic flow, speed limit, traffic accidents, etc. Traffic conditions will affect the driving speed and braking frequency of the vehicle, thereby affecting the temperature and tire pressure of the tires.

[0133] Among them, the current tire temperature data refers to the real-time temperature of the tire during driving.

[0134] It is understandable that when the tire temperature is low, the grip will decrease. Under low temperature conditions, the rubber will become more fragile and hard, thus reducing the friction between the tire and the road, which will eventually lead to a decrease in grip, resulting in a longer braking distance and higher risk. Excessive tire temperature will lead to a variety of adverse consequences, including damage to the tire, increased risk of tire blowout, shortened service life, and increased fuel consumption.

[0135] In an exemplary embodiment, Figure 4 As shown, based on the above-mentioned current tire pressure associated data also including the current vehicle external environment data and / or the current tire temperature data, further, the current vehicle external environment data includes the current external road data, and the third difference includes the road condition difference.

[0136] Optionally, current external road data in the current vehicle driving environment is obtained through sensors on the vehicle or external data sources (such as a navigation system, weather forecast, etc.). The current external road data may include road types (such as highways, urban roads, rural roads, etc.) and road conditions (such as dry, wet, snowy, etc.).

[0137] Further, determining the tire pressure associated risk value corresponding to the current tire pressure associated data according to the first tire pressure impact value and the second tire pressure impact value includes:

[0138] S401, determining a third tire pressure influence value corresponding to the current vehicle external environment data according to a third difference between the current vehicle external environment data and the standard vehicle external environment data in the standard tire pressure associated data.

[0139] Optionally, the standard external road data in the standard tire pressure associated data is read from the vehicle's storage system or cloud server, wherein the standard external road data may include different road types and road conditions.

[0140] Optionally, the current external road data is compared with the standard external road data in the standard tire pressure associated data to identify the difference between the current road data and the standard data, such as the difference in road type, the change in road conditions, etc.

[0141] In this case, based on the third difference between the current vehicle external environment data and the standard vehicle external environment data in the standard tire pressure associated data, the third tire pressure impact value corresponding to the current vehicle external environment data is determined, including: determining the road tire pressure impact value corresponding to the current external road data based on the third difference between the current external road data and the standard external road data in the standard tire pressure associated data; and determining the road tire pressure impact value as the third tire pressure impact value corresponding to the current vehicle external environment data.

[0142] In one possible implementation, method 1: based on the third difference obtained through analysis, a third tire pressure impact value corresponding to the third difference is calculated using an appropriate algorithm or model, where the third tire pressure impact value represents the tire pressure deviation value that may be caused by the road condition difference to the tire.

[0143] In another implementation method, method 2: the current external road data in this embodiment includes the current road type and the water accumulation conditions corresponding to the current road type; correspondingly, the standard external road data includes each standard road type, the water accumulation conditions and danger levels corresponding to each standard road type.

[0144] Exemplarily, standard external road data is shown in Table 1, where the danger level is expressed as Indicates that the third tire pressure impact value is expressed as express:

[0145] Table 1

[0146]

[0147] in, The average calibration coefficient is Can be different.

[0148] Based on the above Table 1, the current road type in the current external road data is compared with each standard road type in Table 1, and the water accumulation condition of the current road type is compared with the water accumulation condition of each standard road type, and a standard road type and a water accumulation condition of the standard road type that are not different from the current road type and water accumulation condition in the current external road data are found. At this time, there is no difference, which indicates that the third difference is 0. In this case, the third tire pressure impact value corresponding to the standard road type with no difference and the water accumulation condition of the standard road type is , which is the third tire pressure impact value corresponding to the current vehicle external environment data.

[0149] In this embodiment, the difference between the current external road data and the standard external road data is taken into consideration, thereby improving the road adaptability of the tire pressure prediction.

[0150] S402: Determine a fourth tire pressure influence value corresponding to the current tire temperature data according to a fourth difference between the current tire temperature data and the standard tire temperature data in the standard tire pressure association data.

[0151] Optionally, the current tire temperature data is compared with the standard tire temperature data in the standard tire pressure associated data to identify a temperature difference, which is the fourth difference.

[0152] Furthermore, based on the experimental data of the impact of historical tire temperature on historical tire pressure, a mapping relationship between tire temperature and tire pressure impact value is established. This relationship can be linear, nonlinear, or rule-based. According to the established mapping relationship, the quantified fourth difference is converted into a fourth tire pressure impact value, and the fourth tire pressure impact value is in direct proportion to the fourth difference.

[0153] For example, each tire is equipped with

[0154] The temperature sensor collects the current tire temperature data of each tire at a sampling frequency of 1Hz , including: current tire temperature data of the left front tire , Current tire temperature data of the right front tire , Current tire temperature data of the left rear tire , Current tire temperature data of the right rear tire .

[0155] Optionally, based on the optimal operating temperature range of the tire provided by the manufacturer, which is 70°C to 100°C, obtain the standard tire temperature data of a tire .

[0156] Specifically, the fourth difference between the current tire temperature data and the standard tire temperature data in the standard tire pressure associated data = the current tire temperature data Subtract standard tire temperature data ;

[0157] Correspondingly, the fourth tire pressure impact value is express, Determine using the following formula (4):

[0158] (4)

[0159] in, A calibration coefficient that makes the fourth tire pressure impact value and the fourth difference directly proportional.

[0160] S403: Determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to the third tire pressure influence value and / or the fourth tire pressure influence value, the first tire pressure influence value, and the second tire pressure influence value.

[0161] In one implementable manner, the first tire pressure influence value, the second tire pressure influence value, and the third tire pressure influence value are weighted or multiplied to obtain a tire pressure associated risk value corresponding to the current tire pressure associated data.

[0162] In another possible implementation, the first tire pressure influence value, the second tire pressure influence value, the third tire pressure influence value and the fourth tire pressure influence value are weighted or multiplied to obtain a tire pressure-associated risk value corresponding to the current tire pressure-associated data.

[0163] In another possible implementation, the first tire pressure influence value, the second tire pressure influence value, and the fourth tire pressure influence value are weighted or multiplied to obtain a tire pressure associated risk value corresponding to the current tire pressure associated data.

[0164] In this embodiment, by comprehensively considering the impact of the current vehicle external environment data, the current tire temperature data, and the vehicle driving data and load data on tire pressure, the accuracy of tire pressure risk prediction is comprehensively improved. This multi-dimensional tire pressure management method enhances driving safety.

[0165] In an exemplary embodiment, Figure 5 As shown, according to the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value, it is determined whether the tire pressure of the vehicle tire is abnormal, including:

[0166] S501, determining a tire pressure risk value corresponding to the current tire pressure value according to a tire pressure difference between the current tire pressure value and a standard tire pressure value corresponding to the tire.

[0167] Among them, the standard tire pressure value of the tire is determined according to the standard tire type of the tire and the climate environment during the driving process of the vehicle.

[0168] For example, the corresponding relationship between the standard tire pressure value, the climate environment, and the tire type is shown in Table 2 below:

[0169] Table 2

[0170]

[0171] Optionally, obtain the current time information from the vehicle's on-board system, including the year, month, and date. Determine the current season based on the month in the on-board time. For example, March to May can be defined as spring, June to August as summer, September to November as autumn, and December to February of the following year as winter (the specific division can be adjusted based on actual conditions). Table 2 stores the standard tire pressure data for summer and winter that has been configured in advance by the manufacturer. Based on the current tire type of the tire and the climate environment of the vehicle during driving, the current season of the vehicle during driving is determined, and the standard tire type that matches the current tire type is determined. The standard tire pressure value of the matching standard tire type in the current season is used as .

[0172] Furthermore, for any current tire pressure value ( ), based on the current tire pressure value With standard tire pressure value The difference in tire pressure between , determine the tire pressure risk value corresponding to the current tire pressure value , Determine using the following formula (5):

[0173] (5)

[0174] in, is the calibration coefficient, so that the greater the tire pressure difference, the greater the risk value of the tire pressure itself The bigger.

[0175] S502: The product of the tire pressure risk value and the tire pressure associated risk value is determined as the current tire pressure risk value.

[0176] The current tire pressure risk value is recorded as AV; the tire pressure associated risk value = ;

[0177] In this embodiment, AV is determined using the following formula (6):

[0178] (6)

[0179] in, and For the specific calculation process of , please refer to the above formulas (1) to (5), Table 1 and Table 2.

[0180] It can be understood that AV not only includes the tire pressure-related risk value predicted by analyzing the difference between the current vehicle driving data, load data, etc. and the standard tire pressure-related data, but also includes the tire pressure risk value caused by the tire pressure's own deviation. By comprehensively considering the current tire pressure status and changes in future driving conditions, the current tire pressure risk value can more accurately evaluate the potential impact of tire pressure on vehicle performance and safety.

[0181] S503, obtaining, from the historical tire pressure abnormality records of the vehicle, a historical tire pressure risk value corresponding to historical tire pressure associated data similar to the current tire pressure associated data.

[0182] Optionally, from the historical tire pressure records of the vehicle, data matching and mining technology is used to find historical records similar to the current tire pressure-related data (vehicle driving data, load data, tire temperature data, vehicle external environment data, etc.). These similar records should cover similar environmental conditions, vehicle status and tire pressure changes, and determine the historical tire pressure risk value corresponding to the similar historical tire pressure-related data, which is the tire pressure risk value of tire pressure abnormality.

[0183] Optionally, historical tire pressure risk value = tire pressure associated risk value corresponding to historical tire pressure associated data * historical tire pressure own risk value; wherein, the historical associated risk value corresponding to the historical tire pressure associated data and the tire pressure associated risk value corresponding to the above-mentioned current tire pressure associated data can be calculated in the same way, and the historical tire pressure own risk value can be calculated in the same way as the tire pressure own risk value corresponding to the above-mentioned current tire pressure value.

[0184] S504: If it is determined that the current tire pressure risk value reaches the historical tire pressure risk value, it is determined that the tire pressure of the vehicle tire is abnormal.

[0185] Specifically, the current tire pressure risk value is continuously monitored, which is calculated based on the difference between the current tire pressure value and the standard tire pressure value, vehicle driving data, load data, and future tire pressure change trends predicted by the model. If the current tire pressure risk value reaches or exceeds the set historical tire pressure risk value, it is determined that the tire pressure of the vehicle is abnormal and the tire pressure warning is triggered. The warning method can be a warning light on the dashboard, a sound alarm, a mobile phone notification, etc., to remind the driver to pay attention to the tire pressure problem.

[0186] In this embodiment, by using the historical tire pressure abnormality records to set the historical tire pressure risk value, it is possible to more accurately determine whether the current tire pressure status has potential risks, thereby avoiding false alarms and missed alarms. The historical tire pressure risk value is dynamically adjusted according to the historical data and current status of the vehicle, and can better adapt to changes in different vehicles, different usage conditions and different seasons. By monitoring the current tire pressure risk value and triggering an early warning in time, the driver can be reminded to take action before the tire pressure problem worsens, thereby avoiding more serious consequences, such as tire damage, vehicle loss of control, etc.

[0187] In an exemplary embodiment, a process for implementing a method for determining abnormal tire pressure is provided, the process comprising:

[0188] (1) Each tire pressure sensor collects the tire pressure of each vehicle at a sampling frequency of 1 Hz, and collects 4 current tire pressure values .

[0189] (2) Get the current vehicle speed and standard vehicle speed If the current vehicle speed is less than the standard vehicle speed, the set tire pressure impact value corresponding to the standard vehicle speed is determined as the first tire pressure impact value corresponding to the current vehicle driving data. .

[0190] If the current vehicle speed <Standard vehicle speed , then determine the first tire pressure impact value .

[0191] (3) If the current vehicle speed is greater than or equal to the standard vehicle speed, the speed difference between the current vehicle speed and the standard vehicle speed is determined as , accordingly, .

[0192] (4) According to the factory mass of the vehicle and the number of people on the vehicle seats, the current vehicle load data N is estimated and the standard vehicle load data N0 is obtained.

[0193] Where X is the number of people on the vehicle seats. Assuming the average weight of each passenger is 60 kg, N = vehicle weight + X*60 kg.

[0194] (5) Calculate the second tire pressure impact value based on the second difference (N-N0) between the current vehicle load data and the standard vehicle load data

[0195] in, .

[0196] (6) According to the third difference between the current vehicle external environment data and the standard vehicle external environment data in the standard tire pressure associated data, query the third tire pressure impact value corresponding to the vehicle in Table 1 .

[0197] Optionally, the third tire pressure impact value corresponding to the non-different standard road type and the water accumulation condition of the standard road type in Table 1 , as the third tire pressure impact value corresponding to the current vehicle external environment data.

[0198] (7) Determine the standard tire pressure value according to Table 2, and calculate the tire pressure difference between the current tire pressure value and the standard tire pressure value corresponding to the tire. , determine the tire pressure risk value corresponding to the current tire pressure value .

[0199] Optional, based on current tire pressure ( ) and standard tire pressure value The difference in tire pressure between , determine the tire pressure risk value corresponding to the current tire pressure value .

[0200] in, , is the calibration factor.

[0201] (8) The temperature sensor installed on the tire collects the current tire temperature data of each tire at a sampling frequency of 1 Hz. ( ), and standard tire temperature data provided by the manufacturer , determine the fourth tire pressure impact value .

[0202] Among them, the fourth difference = current tire temperature data Subtract standard tire temperature data ;

[0203] Furthermore, the fourth tire pressure affects the value ;

[0204] A calibration coefficient that makes the fourth tire pressure impact value and the fourth difference directly proportional.

[0205] (9) The first tire pressure impact value , Second tire pressure impact value 4. Impact value of tire pressure

[0206] The third tire pressure impact value and tire pressure risk value The product between them is taken as the current tire pressure risk value AV.

[0207] Among them, the current tire pressure risk value AV = ;

[0208] (10) Determine whether the current tire pressure risk value AV reaches the historical tire pressure risk value. If so, determine whether the tire pressure of the vehicle tire is abnormal.

[0209] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0210] Based on the same inventive concept, the embodiment of the present application also provides a tire pressure abnormality determination device for implementing the tire pressure abnormality determination method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations of one or more tire pressure abnormality determination device embodiments provided below can refer to the limitations of the tire pressure abnormality determination method above, and will not be repeated here.

[0211] In an exemplary embodiment, Figure 6 As shown, a tire pressure abnormality determination device is provided, comprising a tire pressure monitoring module 11, an abnormality judgment module 12, an impact prediction module 13 and a tire pressure warning module 14; wherein:

[0212] The tire pressure monitoring module 11 is used to obtain the current tire pressure value of the tire in the vehicle during the driving process;

[0213] The abnormality judgment module 12 is used to obtain the current tire pressure associated data of the tire when it is determined that the current tire pressure value meets the tire pressure warning condition; the current tire pressure associated data includes the current vehicle driving data and the current vehicle load data;

[0214] The impact prediction module 13 is used to determine the tire pressure associated risk value corresponding to the current tire pressure associated data according to the difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within the safety threshold value;

[0215] The tire pressure warning module 14 is used to determine whether there is an abnormality in the tire pressure of the vehicle tire according to the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0216] In one embodiment, the impact prediction module 13 includes:

[0217] A first submodule, configured to determine a first tire pressure influence value corresponding to the current vehicle driving data according to a first difference between the current vehicle driving data and the standard vehicle driving data in the standard tire pressure associated data;

[0218] A second submodule, for determining a second tire pressure influence value corresponding to the current vehicle load data according to a second difference between the current vehicle load data and the standard vehicle load data in the standard tire pressure associated data;

[0219] The prediction submodule is used to determine the tire pressure associated risk value corresponding to the current tire pressure associated data according to the first tire pressure impact value and the second tire pressure impact value.

[0220] In one embodiment, the current vehicle driving data includes the current vehicle speed, and the standard vehicle driving data includes the standard vehicle speed; the first submodule is further used to: if the current vehicle speed is less than the standard vehicle speed, determine the set tire pressure influence value corresponding to the standard vehicle speed as the first tire pressure influence value corresponding to the current vehicle driving data;

[0221] If the current vehicle speed is greater than or equal to the standard vehicle speed, the speed difference between the current vehicle speed and the standard vehicle speed is determined, and the first tire pressure influence value corresponding to the current vehicle driving data is determined based on a first weight coefficient corresponding to the speed difference and a second weight coefficient corresponding to the square of the speed difference.

[0222] In one embodiment, the current tire pressure associated data also includes current vehicle external environment data and / or current tire temperature data; the prediction submodule includes:

[0223] A third slave module, configured to determine a third tire pressure impact value corresponding to the current vehicle external environment data according to a third difference between the current vehicle external environment data and the standard vehicle external environment data in the standard tire pressure associated data;

[0224] a fourth slave module, configured to determine a fourth tire pressure influence value corresponding to the current tire temperature data according to a fourth difference between the current tire temperature data and the standard tire temperature data in the standard tire pressure association data;

[0225] The comprehensive assessment submodule is used to determine the tire pressure associated risk value corresponding to the current tire pressure associated data according to the third tire pressure influence value and / or the fourth tire pressure influence value, the first tire pressure influence value and the second tire pressure influence value.

[0226] In one embodiment, the current vehicle external environment data includes current external road data, and the third difference includes a road condition difference; the third submodule is further used for:

[0227] determining a road tire pressure influence value corresponding to the current external road data according to a third difference between the current external road data and the standard external road data in the standard tire pressure associated data;

[0228] The road tire pressure impact value is determined as the third tire pressure impact value corresponding to the current vehicle external environment data.

[0229] In one of the embodiments, the device further comprises a risk determination module, the risk determination module being used to: determine a tire pressure difference between a current tire pressure value and an initial tire pressure value corresponding to the tire;

[0230] If the current tire pressure value is less than the initial tire pressure value, and the tire pressure difference value is within the set tire pressure warning range, it is determined that the current tire pressure value meets the tire pressure warning condition;

[0231] The initial tire pressure value is the standard tire pressure value collected when the vehicle is stationary.

[0232] In one embodiment, the standard tire pressure value of the tire is determined according to the tire type of the tire and the climate environment during the driving of the vehicle.

[0233] In one embodiment, the tire pressure warning module 14 is further used to:

[0234] Determine the tire pressure risk value corresponding to the current tire pressure value according to the tire pressure difference between the current tire pressure value and the standard tire pressure value corresponding to the tire;

[0235] The product of the tire pressure risk value and the tire pressure associated risk value is determined as the current tire pressure risk value;

[0236] Obtaining, from the historical tire pressure abnormality records of the vehicle, a historical tire pressure risk value corresponding to historical tire pressure associated data similar to the current tire pressure associated data;

[0237] If it is determined that the current tire pressure risk value reaches the historical tire pressure risk value, it is determined that the tire pressure of the tire is abnormal.

[0238] Each module in the above tire pressure abnormality determination device can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0239] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 7 As shown. The computer device includes a processor, a memory, an input / output (I / O) interface and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data of a tire pressure abnormality determination method. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a tire pressure abnormality determination method is implemented.

[0240] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0241] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0242] During the driving of the vehicle, the current tire pressure value of the tire in the vehicle is obtained;

[0243] When it is determined that the current tire pressure value meets the tire pressure warning condition, the current tire pressure associated data of the tire is obtained; the current tire pressure associated data includes the current vehicle driving data and the current vehicle load data;

[0244] Determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value;

[0245] Determine whether the tire pressure is abnormal based on the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0246] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0247] During the driving of the vehicle, the current tire pressure value of the tire in the vehicle is obtained;

[0248] When it is determined that the current tire pressure value meets the tire pressure warning condition, the current tire pressure associated data of the tire is obtained; the current tire pressure associated data includes the current vehicle driving data and the current vehicle load data;

[0249] Determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value;

[0250] Determine whether the tire pressure is abnormal based on the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0251] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0252] During the driving of the vehicle, the current tire pressure value of the tire in the vehicle is obtained;

[0253] When it is determined that the current tire pressure value meets the tire pressure warning condition, the current tire pressure associated data of the tire is obtained; the current tire pressure associated data includes the current vehicle driving data and the current vehicle load data;

[0254] Determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value;

[0255] Determine whether the tire pressure is abnormal based on the tire pressure risk value and the tire pressure associated risk value corresponding to the current tire pressure value.

[0256] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0257] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0258] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for determining abnormal tire pressure, characterized in that: The method comprises: During the driving of the vehicle, obtaining the current tire pressure value of the tire in the vehicle; When it is determined that the current tire pressure value meets the tire pressure warning condition, obtaining current tire pressure associated data of the tire; the current tire pressure associated data includes current vehicle driving data and current vehicle load data; Determining a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value; It is determined whether the tire pressure of the vehicle tire is abnormal according to the tire pressure risk value corresponding to the current tire pressure value and the tire pressure associated risk value.

2. The method according to claim 1, characterized in that Determining a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle includes: determining a first tire pressure influence value corresponding to the current vehicle driving data according to a first difference between the current vehicle driving data and the standard vehicle driving data in the standard tire pressure associated data; determining a second tire pressure influence value corresponding to the current vehicle load data according to a second difference between the current vehicle load data and the standard vehicle load data in the standard tire pressure associated data; A tire pressure associated risk value corresponding to the current tire pressure associated data is determined according to the first tire pressure impact value and the second tire pressure impact value.

3. The method according to claim 2, characterized in that The current vehicle driving data includes the current vehicle speed, and the standard vehicle driving data includes the standard vehicle speed; Determining a first tire pressure influence value corresponding to the current vehicle driving data according to a first difference between the current vehicle driving data and the standard vehicle driving data in the standard tire pressure associated data includes: If the current vehicle speed is less than the standard vehicle speed, determining the set tire pressure influence value corresponding to the standard vehicle speed as the first tire pressure influence value corresponding to the current vehicle driving data; If the current vehicle speed is greater than or equal to the standard vehicle speed, the speed difference between the current vehicle speed and the standard vehicle speed is determined, and the first tire pressure influence value corresponding to the current vehicle driving data is determined based on a first weight coefficient corresponding to the speed difference and a second weight coefficient corresponding to the square of the speed difference.

4. The method according to claim 2, characterized in that: The current tire pressure associated data also includes current vehicle external environment data and / or current tire temperature data; Determining a tire pressure associated risk value corresponding to the current tire pressure associated data according to the first tire pressure impact value and the second tire pressure impact value includes: determining a third tire pressure influence value corresponding to the current vehicle external environment data according to a third difference between the current vehicle external environment data and the standard vehicle external environment data in the standard tire pressure associated data; determining a fourth tire pressure influence value corresponding to the current tire temperature data according to a fourth difference between the current tire temperature data and the standard tire temperature data in the standard tire pressure associated data; A tire pressure associated risk value corresponding to the current tire pressure associated data is determined according to the third tire pressure impact value and / or the fourth tire pressure impact value, the first tire pressure impact value, and the second tire pressure impact value.

5. The method according to claim 4, characterized in that The current vehicle external environment data includes current external road data, and the third difference includes a road condition difference; Determining a third tire pressure impact value corresponding to the current vehicle external environment data according to a third difference between the current vehicle external environment data and the standard vehicle external environment data in the standard tire pressure associated data includes: determining a road tire pressure influence value corresponding to the current external road data according to a third difference between the current external road data and the standard external road data in the standard tire pressure associated data; The road tire pressure impact value is determined as a third tire pressure impact value corresponding to the current vehicle external environment data.

6. The method according to claim 1, characterized in that Determining whether the current tire pressure value satisfies a tire pressure warning condition includes: Determine a tire pressure difference between the current tire pressure value and an initial tire pressure value corresponding to the tire; If the current tire pressure value is less than the initial tire pressure value, and the tire pressure difference value is within the set tire pressure warning interval, determining that the current tire pressure value meets the tire pressure warning condition; The initial tire pressure value is a standard tire pressure value of the tire collected when the vehicle is in a stationary state.

7. The method according to claim 6, characterized in that The standard tire pressure value of the tire is determined according to the tire type of the tire and the climate environment of the vehicle during the driving process.

8. The method according to claim 1, characterized in that Determining whether the tire pressure of the vehicle tire is abnormal according to the tire pressure risk value corresponding to the current tire pressure value and the tire pressure associated risk value includes: Determining a tire pressure risk value corresponding to the current tire pressure value according to a tire pressure difference between the current tire pressure value and a standard tire pressure value corresponding to the tire; Determine the product of the tire pressure risk value and the tire pressure associated risk value as the current tire pressure risk value; Acquiring, from the historical tire pressure abnormality records of the vehicle, a historical tire pressure risk value corresponding to historical tire pressure associated data similar to the current tire pressure associated data; If it is determined that the current tire pressure risk value reaches the historical tire pressure risk value, it is determined that the tire pressure of the tire is abnormal.

9. A tire pressure abnormality determination device, characterized in that: The device comprises: A tire pressure monitoring module, used to obtain the current tire pressure value of the tire in the vehicle during the vehicle driving process; an abnormality judgment module, for obtaining current tire pressure associated data of the tire when it is determined that the current tire pressure value meets the tire pressure warning condition; the current tire pressure associated data includes current vehicle driving data and current vehicle load data; An impact prediction module, configured to determine a tire pressure associated risk value corresponding to the current tire pressure associated data according to a difference between the current tire pressure associated data and the standard tire pressure associated data of the vehicle; wherein the tire pressure standard risk value corresponding to the standard tire pressure associated data is within a safety threshold value; The tire pressure warning module is used to determine whether the tire pressure of the vehicle tire is abnormal according to the tire pressure risk value corresponding to the current tire pressure value and the tire pressure associated risk value.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

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