Tire air leak monitoring method and system

Abstract

The application relates to a tire air leakage monitoring method and system, the tire air leakage monitoring method comprising: whenever a vehicle starts, the following steps are performed: determining a monitoring date window; determining a monitoring day tire pressure value corresponding to each monitoring date within the range of the monitoring date window; determining that the maximum monitoring day tire pressure value within the range of the monitoring date window is a maximum date value; determining that the difference between the maximum date value and the current day tire pressure value is a date difference value; and comparing the size between the date difference value and a slow air leakage threshold value, and determining that slow air leakage occurs in the tire when the date difference value is greater than the slow air leakage threshold value. The application can more accurately and earlier remind the driver and passenger of the abnormal air leakage state before the tire is under pressure.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more specifically, to methods and systems for detecting tire leaks. Background Technology

[0002] During vehicle operation, tire health plays a crucial role in safe vehicle use. Especially when tires leak air at varying rates, timely and accurate warnings and alerts must be provided to the driver to better ensure the safety of passengers.

[0003] According to the national standard GB26149-2017 "Performance Requirements and Test Methods for Tire Pressure Monitoring Systems for Passenger Cars," vehicles are typically required to be equipped with tire pressure monitoring systems to alert the driver when tire pressure becomes low. The alert condition is usually that the tire pressure is less than or equal to the recommended low pressure threshold (e.g., 75%). However, when the tire pressure reaches 75% or less of the recommended pressure, it is already a relatively dangerous condition for the vehicle's tires. Therefore, existing tire pressure monitoring systems cannot accurately and early alert occupants to potential tire leaks (fast or slow) before low tire pressure occurs. Summary of the Invention

[0004] The embodiments of this application provide a tire leak monitoring method and system, which can alert drivers and passengers earlier and more accurately if an abnormal leak occurs before the tire becomes underinflated, thereby providing drivers and passengers with clearer tire status information.

[0005] According to one aspect of this application, a tire leak detection method is provided, the tire leak detection method comprising: whenever a vehicle is started, performing the following steps: determining a monitoring date window, wherein the monitoring date window is a date interval segment ending at the current monitoring date; determining a monitoring day tire pressure value corresponding to each monitoring date within the range of the monitoring date window, wherein the monitoring day tire pressure value is a tire pressure compensation value associated with the monitoring date, and the plurality of monitoring day tire pressure values ​​within the range of the monitoring date window include the tire pressure value of the current day associated with the current monitoring date; determining the largest monitoring day tire pressure value within the range of the monitoring date window as a maximum date value; determining the difference between the maximum date value and the tire pressure value of the current day as a date difference; and comparing the date difference with a slow leak threshold, and determining that the tire has a slow leak if the date difference is greater than the slow leak threshold.

[0006] In some embodiments of this application, optionally, determining the tire pressure value corresponding to each monitoring date within the monitoring date window includes: determining the tire pressure value for that day; wherein determining the tire pressure value for that day includes: acquiring the tire temperature measurement value and the tire pressure measurement value at the current moment; acquiring the tire pressure compensation value at the current moment based on the tire temperature measurement value and the tire pressure measurement value; determining whether the tire pressure value for that day exists; if the tire pressure value for that day does not exist, assigning the tire pressure value for that day to the tire pressure value for that day using the tire pressure compensation value at the current moment; and if the tire pressure value for that day already exists, comparing the size between the tire pressure compensation value at the current moment and the tire pressure value for that day, and updating the tire pressure value for that day with the tire pressure compensation value at the current moment if the tire pressure compensation value at the current moment is less than the tire pressure value for that day.

[0007] In some embodiments of this application, optionally, determining the tire pressure value corresponding to each monitoring date within the monitoring date window includes: determining the remaining tire pressure value, wherein the remaining tire pressure value includes the tire pressure values ​​of monitoring days other than the tire pressure value of the current day among a plurality of tire pressure values ​​of monitoring days within the monitoring date window; wherein determining the remaining tire pressure value includes: determining whether there are existing values ​​and missing values ​​among the remaining tire pressure values; if both existing values ​​and missing values ​​exist, determining the existing monitoring dates associated with the existing values ​​and the missing monitoring dates associated with the missing values ​​among the remaining tire pressure values; determining the existing monitoring date closest to the missing monitoring date among the existing monitoring dates before the missing monitoring date as the closest monitoring date, and assigning a value to the missing value with the existing value associated with the closest monitoring date; and if only missing values ​​exist, assigning a value to the missing value with the tire pressure value of the current day.

[0008] Optionally, in some embodiments of this application, the tire leak monitoring method further includes: re-determining the daily tire pressure value each time the vehicle is turned off.

[0009] According to another aspect of this application, a tire leak detection method is provided, the tire leak detection method comprising: when the vehicle is in operation, performing the following steps: acquiring in real time the tire temperature measurement value and tire pressure measurement value at the current moment; determining in real time the tire pressure compensation value at the current moment based on the acquired tire temperature measurement value and tire pressure measurement value; determining in real time a maximum time value within a time sliding window, wherein the time sliding window is a time period ending at the current moment, and the maximum time value is the maximum value among multiple tire pressure compensation values ​​within the time sliding window; determining in real time a time difference based on the tire pressure compensation value at the current moment and the maximum time value, wherein the time difference is equal to the difference between the maximum time value and the tire pressure compensation value at the current moment; and comparing in real time the magnitude of the time difference with a rapid leak threshold, and determining that the tire has a rapid leak if the time difference is greater than the rapid leak threshold.

[0010] In some embodiments of this application, optionally, when the time interval between the current time and the vehicle start time is less than a threshold time interval, the duration of the time sliding window is equal to the time interval between the current time and the vehicle start time; and when the time interval between the current time and the vehicle start time is greater than a threshold time interval, the duration of the time sliding window is equal to the threshold time interval.

[0011] Optionally, in some embodiments of this application, the tire leak detection method further includes: when it is determined that the tire is leaking air rapidly, continuing to determine the time difference value in real time; and comparing the magnitude relationship between the time difference value and a conversion threshold in real time, and determining that the tire has changed from a rapid leak to a slow leak when the time difference value is less than the conversion threshold.

[0012] According to another aspect of this application, a computer-readable storage medium is provided, wherein instructions are stored therein, which, when executed by a processor, cause the processor to perform any of the tire leak detection methods described above.

[0013] According to another aspect of this application, a tire leak detection system is provided, the tire leak detection system comprising: a tire monitoring module configured to: monitor and transmit tire temperature and tire pressure measurements in real time whenever the vehicle is started; and a leak detection module communicatively connected to the tire monitoring module, the leak detection module configured to: perform the following steps whenever the vehicle is started: determine a monitoring date window, wherein the monitoring date window is a date interval segment ending at the current monitoring date; determine a monitoring day tire pressure value corresponding to each monitoring date within the monitoring date window range, wherein the monitoring day tire pressure value is a tire pressure compensation value associated with the monitoring date, and the monitoring date window range is... The system includes multiple monitoring day tire pressure values, including the tire pressure value associated with the current monitoring date, which is determined based on the tire temperature measurement and the tire pressure measurement; the maximum monitoring day tire pressure value within the monitoring date window is determined as the maximum date value; the difference between the maximum date value and the current day tire pressure value is determined as the date difference; the date difference is compared with a slow leak threshold, and if the date difference is greater than the slow leak threshold, a slow leak is determined to occur in the tire; and if a slow leak is determined to occur, a message indicating that a slow leak has occurred is transmitted; and a user reminder module, communicatively connected to the leak detection module, configured to: in response to receiving a message indicating that a slow leak has occurred in the tire, transmit the message to the user.

[0014] According to another aspect of this application, a tire leak detection system is provided, the tire leak detection system comprising: a tire monitoring module configured to: monitor and transmit tire temperature and tire pressure measurements in real time when the vehicle is in operation; and a leak detection module communicatively connected to the tire monitoring module, the leak detection module configured to: perform the following steps when the vehicle is in operation: acquire tire temperature and tire pressure measurements in real time; determine tire pressure compensation values ​​in real time based on the acquired tire temperature and tire pressure measurements; and determine the maximum time within a time slip window. The system comprises: a time-sliding window, wherein the time-sliding window is a time period ending at the current time, and the maximum time value is the maximum value among multiple tire pressure compensation values ​​within the time-sliding window range; a time difference is determined in real time based on the tire pressure compensation value at the current time and the maximum time value, wherein the time difference is equal to the difference between the maximum time value and the tire pressure compensation value at the current time; the time difference is compared in real time with a rapid leak threshold, and if the time difference is greater than the rapid leak threshold, it is determined that the tire is about to leak; and a user reminder module, which is communicatively connected to the leak detection module, and configured to: in response to receiving a message that the tire is about to leak, transmit the message to the user.

[0015] According to another aspect of this application, a vehicle is provided that includes any of the tire leak detection systems described above.

[0016] In some embodiments, the tire leak detection method and system provided in this application can more quickly identify the fast and slow leak status when the vehicle is in motion. In some embodiments, the tire leak detection method and system provided in this application can detect whether a slow leak has occurred during the long period of parking when the vehicle is restarted after being parked for several days. Attached Figure Description

[0017] The above and other objects and advantages of this application will become more fully clear from the following detailed description taken in conjunction with the accompanying drawings, wherein the same or similar elements are indicated by the same reference numerals.

[0018] Figure 1 A method for monitoring slow tire leaks according to an embodiment of this application is shown;

[0019] Figure 2 A method for determining the daily tire pressure value according to an embodiment of this application is shown;

[0020] Figure 3 A method for determining the remaining daily tire pressure value according to an embodiment of this application is shown;

[0021] Figures 4A to 4C An example of determining the tire pressure value on the monitoring day within the monitoring date window range is shown;

[0022] Figure 5 A method for monitoring rapid tire leaks according to an embodiment of this application is shown;

[0023] Figure 6 A method for monitoring a tire's transition from a rapid leak to a slow leak, according to one embodiment of this application, is shown.

[0024] Figure 7 A tire leak detection system according to an embodiment of this application is shown. Detailed Implementation

[0025] For purposes of brevity and illustrativeness, the principles of this application are described herein primarily with reference to exemplary embodiments thereof. However, those skilled in the art will readily recognize that the same principles are equivalently applicable to all types of tire leak detection methods and systems, and that these same or similar principles can be implemented therein, without departing from the true spirit and scope of this application.

[0026] The tire leak detection method in this application includes... Figure 1 The method for monitoring slow tire leaks shown in Figure 100 Figure 5 The method for detecting rapid tire leaks shown in Figure 500 and Figure 6 The illustrated method 600 involves monitoring a tire leak from rapid to slow. In some embodiments, the tire leak detection method can utilize a leak detection module 730 within a tire leak detection system 700 (see [link]). Figure 7 This can be achieved through [method / mechanism]. It should be noted that this article discusses tire leak detection methods specifically for a single tire. In vehicles with multiple tires, tire leak detection can be performed on each tire individually, and the monitoring process for multiple tires can be carried out simultaneously to determine the leak status of multiple tires at the same time.

[0027] The following will combine Figures 1 to 3 as well as Figures 4A to 4C This application describes a method 100 for monitoring slow tire leaks according to one embodiment. In some embodiments, the method 100 for monitoring slow tire leaks may be performed once in response to vehicle startup, so as to determine whether a slow tire leak has occurred each time the vehicle is started.

[0028] Figure 1 A method 100 for monitoring slow tire leaks according to an embodiment of this application is shown. Figures 4A to 4CThis illustrates the data that needs to be acquired and determined during the execution of the method 100 for monitoring slow tire leaks according to embodiments of this application. For example... Figure 1 As shown, the method 100 for monitoring slow tire leaks includes steps S110 to S170. In some embodiments, the leak detection module 730 can begin executing steps S110 to S170 whenever the vehicle is started.

[0029] In step S110, the monitoring date window 410 is determined (see...). Figure 4B ), where monitoring date window 410 is the current date (also known as "current monitoring date") 420 (see Figure 4B The date range ending at 410. Monitoring date window 410 includes the current day 420 and the remaining monitoring days 430 (see [reference]). Figure 4B ), where the remaining monitoring date 430 refers to the dates in the monitoring date window 410 other than the current date 420.

[0030] In some embodiments, the monitoring date window 410 can be multiple dates within a preset number of days. The preset number of days can be any number of days from 5 to 100 days, such as 7 days, 14 days, 30 days, 60 days, etc. Figure 4B An example of the monitoring date window 410 is shown when the date 420 is the 27th of a certain month and the preset number of days for the monitoring date window 410 is 14 days. For example... Figure 4B As shown, the monitoring date window 410 can include the 14th to the 27th of the current month, for a total of 14 monitoring dates 415 (see [link]). Figure 4B After step S110, step S120 can be performed.

[0031] In step S120, a tire pressure compensation value P corresponding to each monitoring date 415 is determined within the monitoring date window 410. TC For ease of description, this article will refer to the tire pressure compensation value P associated with the monitoring date 415. TC The "Daily Tire Pressure Value" is referred to as 425 (see [reference]). Figure 4B In other words, within a pre-defined number of days in the monitoring date window 410, a monitoring day tire pressure value 425 is determined for each day. Within the monitoring date window 410, there is an associated monitoring day tire pressure value 425 corresponding to each monitoring date 415.

[0032] This application determines whether a tire is leaking air by monitoring changes in tire pressure. Considering that tire pressure dynamically changes due to tire temperature, this paper uses a "tire pressure compensation value" to correct for the impact of temperature variations on tire pressure, thereby enabling a more accurate determination of tire leaks. The "tire pressure compensation value" mentioned herein refers to the tire pressure value after temperature compensation. In some embodiments, it can be based on the measured tire pressure value P. Meas Tire temperature measurement value T Meas To calculate the tire pressure compensation value P TC Among them, the tire pressure measurement value P Meas and tire temperature measurement value T Meas This can be achieved through the tire monitoring module 710 installed in the vehicle (see...). Figure 7 The tire pressure compensation value P is obtained by means of other means. In some embodiments, the tire pressure compensation value P is obtained by means of other means. TC The calculation formula can be expressed as follows:

[0033]

[0034] Among them, P TC P represents the tire pressure compensation value (kPa). Meas T represents the tire pressure measurement value (kPa). Meas T represents the tire temperature measurement value (°C). Ref This indicates the tire temperature reference value (°C). It should be noted that the tire temperature reference value T... Ref This is the calibration value. Considering that the gas inside the tire approximately follows the ideal gas law, when performing temperature compensation for the tire pressure value, this application can take 20℃ as the tire temperature reference value, thereby adjusting the current tire pressure measurement value P. Meas This is converted to tire pressure at 20°C for the same total gas volume. The tire pressure measurement value P is then used to calculate this. Meas Temperature compensation can effectively eliminate the impact of tire temperature changes on tire pressure.

[0035] Multiple tire pressure values ​​425 within the monitoring date window 410, including the tire pressure value 450 for the current day (see [reference]). Figure 4B ) and remaining daily tire pressure of 440 (see Figure 4B Here, the tire pressure value 450 for the current day refers to the tire pressure value 425 for the monitoring day associated with the current date 420, and the tire pressure value 440 for the remaining days refers to the tire pressure value 425 for the monitoring day associated with the remaining monitoring date 430. The remaining monitoring date 430 refers to any date within the monitoring date window 410 other than the current date 420, and the remaining tire pressure value 440 refers to the tire pressure value 425 for the monitoring day other than the tire pressure value 450 for the current day within the monitoring date window 410.

[0036] In some embodiments, determining the monitoring day tire pressure values ​​425 within the monitoring date window 410 in step S120 may include determining the tire pressure value 450 for that day and determining the remaining day tire pressure values ​​440. In some embodiments, the step of determining the tire pressure value 450 for that day may include the steps described below for... Figure 2 The steps in the method 200 for determining the daily tire pressure value 450 are described. In some embodiments, the step of determining the remaining daily tire pressure value 440 may include the steps described below for... Figure 3 The steps in the method 300 for determining the remaining daily tire pressure value of 440 are described.

[0037] Figure 4C An example is shown of each monitoring date 415 and its associated tire pressure value 425 within a defined monitoring date window 410. In some embodiments, the multiple tire pressure values ​​425 within the monitoring date window 410 determined via step S120 can be as follows: Figure 4C The form shown is stored in, for example, storage component 734 (see...). Figure 7 In a memory such as ), after step S120, step S130 can be executed.

[0038] In step S130, the maximum value among multiple tire pressure values ​​425 on monitoring days within the monitoring date window 410 is selected. For ease of description, this document refers to the maximum value of the tire pressure values ​​425 on monitoring days within the monitoring date window 410 as the "maximum date value," denoted as P. StoreMax .exist Figure 4C In the example shown, the maximum date value P StoreMax The value is "236", corresponding to the tire pressure value of 425 on the monitoring days of the 19th, 20th, and 21st. After step S130, step S140 can be executed.

[0039] In step S140, the maximum date value P obtained from step S130 is calculated. StoreMax The difference between the maximum date value P and the tire pressure value of 450 obtained from step S120. For ease of description, this article will refer to the maximum date value P. StoreMax The difference between the tire pressure reading and the daily tire pressure value of 450 is called the "date difference". Figure 4C In the example shown, the maximum date value P StoreMax The tire pressure on that day was 236 kPa, while the tire pressure at 450 kPa was 232 kPa, resulting in a date difference of 4 kPa. It should be noted that the maximum date value P compared in step S140 is... StoreMax Both the daily tire pressure value of 450 are temperature-compensated tire pressure values. Because they effectively eliminate the influence of tire temperature on tire pressure, they can more accurately reflect changes in the total amount of gas inside the tire. After step S140, step S150 can be executed.

[0040] In step S150, the date difference obtained from step S140 is compared with the slow leakage threshold ΔP. slow The size between them is used to determine whether the date difference is greater than the slow leakage threshold ΔP. slow Among them, the slow leakage threshold ΔP slow This can be a pre-set value in memory used to determine whether a tire is experiencing a slow leak. In some embodiments, the slow leak threshold ΔP slow Any value between 10 kPa and 50 kPa can be used, for example, 25 kPa. If the date difference is not greater than the slow leak threshold, it indicates that the tire is not experiencing a slow leak, and the process can proceed to step S170 to end the current method 100 for monitoring tire slow leaks. Figure 4C In the example shown, the slow leakage threshold ΔP is less than 25 kPa due to the date difference of 4 kPa. slow Therefore, it can be determined that the tire is not currently experiencing a slow leak, and the current slow leak monitoring can be terminated. If the date difference is greater than the slow leak threshold, it indicates that the tire is experiencing a slow leak, and step S160 can be further executed.

[0041] In step S160, a message indicating a slow tire leak is transmitted. In some embodiments, step S160 may further include: acquiring the current tire pressure measurement value P. Meas To determine the tire pressure measurement value P Meas If the tire pressure is less than or equal to an underinflation threshold (e.g., 75% of the recommended tire pressure), then the tire is underinflated, and a message "Tire is slowly leaking and underinflated" is sent accordingly. If not, the tire is not underinflated, and a message "Tire is slowly leaking" is sent accordingly. In some embodiments, the message about an abnormal tire leak can be sent to the user alert module 740 (see [link to documentation]). Figure 7 After step S160, step S170 can be further performed to end the current method 100 for monitoring slow tire leaks.

[0042] Figure 2 A method 200 for determining a daily tire pressure value of 450 is shown according to one embodiment of this application. For example... Figure 2 As shown, the method 200 for determining the tire pressure value of 450 on a given day includes steps S210 to S250.

[0043] In step S210, the tire temperature measurement value T at the current moment is obtained. Meas and tire pressure measurement value P MeasIt should be noted that, since the method 100 for monitoring slow tire leakage in this embodiment is executed in response to vehicle startup, the "current moment" mentioned in step S210 can refer to the moment the vehicle starts, or a moment immediately following the start of the vehicle. Step S220 can be further executed after step S210.

[0044] In step S220, based on the tire temperature measurement value T obtained from step S210... Meas and tire pressure measurement value P Meas Calculate the tire pressure compensation value P at the current moment. TC Based on tire temperature measurement value T Meas and tire pressure measurement value P Meas To calculate the tire pressure compensation value P TC The formula can be as described above, and will not be repeated here. After step S220, step S230 can be further executed.

[0045] In step S230, it is determined whether the tire pressure value for the day (450) already exists. It should be noted that since the tire pressure value for the day can be determined every time the vehicle is started, the memory may already contain the tire pressure value for the day (450) when the vehicle is started a second time (or more) on the same day. Generally, the tire pressure value for the day (450) will not be present in the memory only if the vehicle is started for the first time on date 420. If the tire pressure value for the day (450) is not present in the memory, step S250 can be further executed. If the tire pressure value for the day (450) already exists, step S240 can be further executed.

[0046] In step S240, the tire pressure compensation value P obtained in step S220 at the current moment is compared. TC The value between this value and the existing daily tire pressure value of 450 is used to determine the current tire pressure compensation value P. TC Is it less than the existing daily tire pressure value of 450? What is the current tire pressure compensation value P? TC If the tire pressure is less than the existing daily tire pressure value of 450, step S250 can be further executed. The current tire pressure compensation value P... TC If the tire pressure is not less than the existing daily tire pressure value of 450, the existing daily tire pressure value of 450 can be retained without updating the daily tire pressure value of 450.

[0047] In step S250, the tire pressure compensation value P obtained in step S220 at the current moment is used. TC The tire pressure value of 450 for the day is assigned. At this point, the tire pressure compensation value P is... TC The newly determined tire pressure value for the day is 450.

[0048] According to the embodiments described above, method 200 for determining the daily tire pressure value 450 can be executed once each time the vehicle is started. That is, whenever the vehicle is started, the storage component 734 stores a monitoring daily tire pressure value 425 associated with that date. In some embodiments, in addition to determining the daily tire pressure value 450 when the vehicle is started, the daily tire pressure value 450 can also be re-determined each time the vehicle is turned off. The method for re-determining the daily tire pressure value 450 is similar to method 200 for determining the daily tire pressure value 450 described above. The difference is that, for the embodiment where the daily tire pressure value 450 is determined every time the vehicle is started, the "current moment" mentioned in steps S210 to S250 refers to the moment the vehicle is started, or a moment immediately after the vehicle is started; while for the embodiment where the daily tire pressure value 450 is determined every time the vehicle is turned off, the "current moment" mentioned in steps S210 to S250 refers to the moment the user instructs the vehicle to be turned off, or a moment immediately after the user instructs the vehicle to be turned off.

[0049] In some embodiments, after determining the daily tire pressure value 450 by method 200, the newly determined daily tire pressure value 450 can be set as follows: Figure 4B The values ​​are stored in storage component 734 in the form shown. In some embodiments, after determining the daily tire pressure value 450 via method 200, method 300 may be further performed to determine the remaining daily tire pressure values ​​440 within the monitoring day window 410.

[0050] Figure 3 A method 300 for determining the remaining daily tire pressure value 440 according to one embodiment of this application is shown. Figure 3 As shown, the method 300 for determining the remaining daily tire pressure value 440 includes steps S310 to S360.

[0051] In step S310, among the remaining daily tire pressure values ​​440, it is determined whether an existing value 460 exists (see...). Figure 4B ) and 470 vacancy (see Figure 4B In some embodiments, the tire pressure compensation value P for the corresponding date is only obtained when the vehicle is started and turned off. TC Therefore, for dates when the vehicle was not started, the corresponding tire pressure compensation value P may not be stored in the memory. TCIn some embodiments, the determination component 732 may retrieve data from the storage component 734 of the stored monitoring date 415 and the associated monitoring day tire pressure value 425 to determine the monitoring day tire pressure value 425 within the current monitoring date window 410. The remaining daily tire pressure values ​​440 already stored in the vehicle pre-start memory are referred to herein as "existing values," and any gaps in the storage of unstored remaining daily tire pressure values ​​440 are referred to as "gap values."

[0052] against Figures 4A to 4C The example shown, Figure 4A This shows the monitoring date 415 and the associated tire pressure value 425 stored in the memory when the vehicle was last started on the 23rd of that month. In other words, Figure 4A The data shown is the data that the vehicle could retrieve from memory when it was restarted three days later on the 27th of the month. For example... Figure 4A As shown, when the vehicle is started, the determination component 732 can obtain the tire pressure values ​​425 for the monitoring days from the 10th to the 23rd of the current month from the storage component 734. Among them, the last start date of the vehicle, the 23rd, is the latest monitoring date 435 stored in the memory, and the tire pressure value 425 associated with the latest monitoring date 435 is the latest tire pressure value 445 stored in the memory.

[0053] Figure 4B An example is shown where, when the vehicle is started on the 27th, the determination component 732 can determine the remaining daily tire pressure value 440 from the storage component 734. For a monitoring date window 410 determined based on the vehicle's current start date being the 27th, which is from the 14th to the 27th, the monitoring daily tire pressure values ​​425 from the 14th to the 23rd obtained by the determination component 732 from the storage component 734 fall within the monitoring date window 410. Accordingly, the monitoring daily tire pressure values ​​425 from the 14th to the 23rd are existing values ​​460, and the monitoring daily tire pressure values ​​425 from the 24th to the 26th are missing, referred to herein as "missing values". For ease of description, the dates associated with the existing value 460 are referred to herein as "existing monitoring dates". Figure 4B In the example, existing monitoring dates 480 include the 14th to the 23rd. The date associated with the missing value 470 is referred to as the "missing monitoring date". Figure 4B In the example, the missing monitoring dates 490 include the 24th to the 26th.

[0054] Therefore, based on the judgment in step S310, depending on the number of days between the vehicle's current start date (i.e., today's date 420) and the vehicle's last start date (i.e., the latest monitoring date 435 stored in the memory), there may be three possible scenarios: the remaining daily tire pressure value 440 may contain only the existing value 460, both the existing value 460 and the missing value 470 may exist, or only the missing value 470 may exist.

[0055] If the date 420 on which the vehicle is started is more than the number of days that the latest monitoring date 435 is beyond the preset number of days in the monitoring date window 410 (at this time, all the data stored in the memory about the monitoring date 415 and the associated tire pressure value 425 on the monitoring date falls outside the range of the monitoring date window 410), then there is only a missing value 470 in the remaining tire pressure value 440.

[0056] If the date 420 on which the vehicle is started is the same day as or the next day of the latest monitoring date 435 (at this time, there is one day of data in the data stored in the memory about the monitoring date 415 and the associated tire pressure value 425 of the monitoring day that falls outside the range of the monitoring date window 410), then the remaining tire pressure value 440 at this time only has the existing value 460.

[0057] If the date 420 on which the vehicle is started is neither the same day as the latest monitoring date 435 nor the next day, nor does it exceed the preset number of days in the monitoring date window 410 (at this time, more than one day of data in the data stored in the memory about the monitoring date 415 and the associated tire pressure value 425 falls outside the range of the monitoring date window 410, but not all data falls outside the range of the monitoring date window 410), then the remaining daily tire pressure value 440 contains both a missing value 470 and an existing value 460.

[0058] In other words, once the monitoring date window 410 is determined when the vehicle is started, within the remaining monitoring date 430 of the monitoring date window 410, there may be both existing value 460 and missing value 470, there may be only existing value 460, or there may be only missing value 470.

[0059] In some embodiments, step S310 may further include: based on the currently determined monitoring date window 410 range, if at least some of the data stored in the memory regarding the monitoring date 415 and the associated tire pressure value 425 on the monitoring date falls outside the monitoring date window 410 range, then delete the at least some of the data falling outside the monitoring date window 410 range.

[0060] exist Figures 4A to 4C In the example shown, based on the currently determined monitoring date window 410 being the 14th to the 27th of the month, the monitoring date 415 stored in the storage component 734 falls outside the range of the monitoring date window 410 between the 10th and the 13th. Therefore, the monitoring date tire pressure value 425 associated with the monitoring date 415 in the range of the 10th to the 13th can be deleted.

[0061] In some embodiments, if the date on which the vehicle is started is more than a preset number of days away from the latest monitoring date 435 stored in the memory, all data stored in the memory regarding the monitoring date 415 and the associated tire pressure value 425 on the monitoring date can be deleted, and only a missing value 470 exists within the monitoring date window 410.

[0062] like Figure 3 As shown, if there is only an existing value 460 and no missing value 470 in the remaining daily tire pressure values ​​440, step S320 can be entered to delete the data that falls outside the range of the monitoring date window 410, while maintaining the existing multiple remaining daily tire pressure values ​​440.

[0063] If there is only a missing value 470 and no existing value 460 in the remaining daily tire pressure values ​​440, step S360 can be performed to delete data (in some embodiments, all data) that falls outside the range of the monitoring date window 410, and assign all remaining daily tire pressure values ​​440 (i.e., missing values ​​470) with the tire pressure value of the day 450 (e.g., obtained via the method 200 for determining the tire pressure value of the day 450).

[0064] Combination Figure 1 The described method 100 for monitoring slow tire leaks shows that, for cases where only a missing value 470 exists within the monitoring date window 410, due to the maximum date value P... StoreMax Since the tire pressure value of 450 is the same as the daily tire pressure value, the method 100 for monitoring slow tire leaks in this situation is merely formal and does not actually utilize the data stored in the memory. In other words, if the vehicle's current start date is too far removed from the last start date, such that the latest monitoring date 435 falls outside the monitoring date window 410, the method 100 for monitoring slow tire leaks is not used to determine if a slow leak has occurred. This is because, due to the extended time, if a slow leak occurs, the tire pressure may already be low, thus allowing for direct detection of low tire pressure to determine if a slow leak has occurred.

[0065] If both an existing value 460 and a missing value 470 exist in the remaining daily tire pressure values ​​440, steps S330 to S350 can be further executed. Figures 4A to 4C The example shown illustrates this situation, which will be discussed in the following text. Figures 4A to 4C The example shown is used to describe this.

[0066] In step S330, data falling outside the range of the monitoring date window 410 can be deleted, and in the remaining monitoring dates 430, the existing monitoring date 480 associated with the existing value 460 and the missing monitoring date 490 associated with the missing value 470 are determined. Figure 4B In the example, the existing monitoring dates 480 include the 14th to the 23rd, and the missing monitoring dates 490 include the 24th to the 26th. After step S330, step S340 can be further executed.

[0067] In step S340, among the remaining monitoring dates 430, based on one or more existing monitoring dates 480 preceding the vacant monitoring date 490, the existing monitoring date 480 closest to the vacant monitoring date 490 is determined as the closest monitoring date 492. Figure 4B In the example, the closest monitoring date 492 was determined to be the 23rd. After step S340, step S350 can be further executed.

[0068] In step S350, the existing value 460 associated with the closest monitoring date 492 is determined to be the closest existing value 494, and the missing value 470 is assigned a value using the closest existing value 494. Figure 4B In the example, the closest existing value 494 is determined to be "228", and the tire pressure values ​​425 for the monitoring days from the 24th to the 26th are assigned the value "228". At this point, all the missing values ​​470 in the remaining tire pressure values ​​440 have been assigned a value. Figure 4C This illustrates the situation after full assignment. In some embodiments, after determining the remaining daily tire pressure value 440 via method 300, the newly determined remaining daily tire pressure value 440 can be set as follows: Figure 4C The format shown is stored in storage component 734.

[0069] When a vehicle has been parked for several days and the driver starts the vehicle again, the method 100 for monitoring slow tire leakage according to the embodiments of this application can provide information as soon as possible whether a slow tire leakage has occurred during the long period of parking.

[0070] Next, we will combine Figure 5 This application describes a method 500 for monitoring rapid tire puncture according to one embodiment. In some embodiments, the method 500 for monitoring rapid tire puncture can be performed in real time while the vehicle is in operation, so as to determine in real time whether a rapid tire puncture has occurred. In cases where the vehicle includes multiple tires, the method 500 for monitoring rapid tire puncture can be performed separately for each tire in the vehicle. The method 500 for monitoring rapid tire puncture described herein is discussed with reference to one of the tires.

[0071] Figure 5A method 500 for monitoring rapid tire leaks according to an embodiment of this application is shown. Figure 5 As shown, the method 500 for monitoring rapid tire leaks includes steps S510 to S560. In some embodiments, steps S510 to S560 can be performed as long as the vehicle is in operation. "Vehicle in operation" as used herein can refer to any state of the vehicle after it has been started and before it has been turned off.

[0072] In step S510, the tire temperature measurement value T at the current moment is obtained. Meas and tire pressure measurement value P Meas As described above, the tire pressure measurement value P Meas and tire temperature measurement value T Meas This can be achieved through the tire monitoring module 710 (see...) Figure 7 This is obtained through monitoring. After step S510, step S520 can be executed.

[0073] In step S520, the tire temperature measurement value T at the same time obtained from step S510 is used as the basis for further steps. Meas and tire pressure measurement value P Meas Determine the tire pressure compensation value P at that moment. TC Among them, the tire pressure compensation value P TC The result can be calculated using the formula described above, which will not be repeated here. After step S520, step S530 can be executed.

[0074] In step S530, a time-sliding window is determined with the current time as the endpoint, and multiple tire pressure compensation values ​​P are determined within the time-sliding window. TC The maximum value within the time-sliding window. For ease of description, this article refers to the maximum tire pressure compensation value P within the time-sliding window. TC This is called the "maximum time value", denoted as P. WinMaxThe time-sliding window can be a time period ending at the current time. In some embodiments, the time-sliding window is typically a fixed threshold time period T, for example, the threshold time period T can be any time period from 5 minutes to 60 minutes, such as 10 minutes. However, in the initial stage of vehicle operation from start-up, the duration of vehicle operation may not reach the threshold time period T. In this case, the operating time of the vehicle from start-up can be considered as the time-sliding window. That is, when the time period from the current time to the vehicle start-up time is less than the threshold time period T, the duration of the time-sliding window is equal to the time period between the current time and the vehicle start-up time. For example, the time-sliding window during this period can be continuously expanded in 1-second increments until it equals the threshold time period T; when the time period from the current time to the vehicle start-up time is greater than or equal to the threshold time period T, the duration of the time-sliding window is equal to the threshold time period T. It can be understood that in the vehicle start-up state, the maximum time value P WinMax It can be updated in real time as the time-sliding window slides. After step S530, step S540 can be executed.

[0075] In step S540, the tire pressure compensation value P at the current moment is obtained from step S520. TC and the maximum time value P determined in step S530 WinMax The time difference is determined. In some embodiments, the time difference is equal to the maximum time value P in the currently determined time slip window. WinMax The tire pressure compensation value P at the current moment TC The difference between them. After step S540, step S550 can be executed.

[0076] In step S550, the time difference obtained from step S540 is compared with the rapid leakage threshold to determine whether the time difference is greater than the rapid leakage threshold ΔP. rapid Similar to the slow leak threshold mentioned above, the fast leak threshold can be a pre-set value in memory used to determine whether a tire is experiencing a fast leak. In some embodiments, the fast leak threshold ΔP rapid The value can be any from 10 kPa to 50 kPa, for example, 25 kPa. If the time difference is not greater than the rapid leak threshold, it means that the tire has not experienced a rapid leak, and the process can return to step S510 to monitor in real time whether the tire will experience a rapid leak at the next moment. If the time difference is greater than the rapid leak threshold, it means that the tire has experienced a rapid leak, and step S560 can be further executed.

[0077] In step S560, a message indicating an imminent tire leak is transmitted. In some embodiments, the message indicating an imminent tire leak may be transmitted to the user alert module 740. In some embodiments, step S560 may further include: acquiring the current tire pressure measurement value P. Meas Determine the tire pressure measurement value P. Meas If the tire pressure is less than or equal to an underinflation threshold (e.g., 75% of the recommended tire pressure), a message indicating an impending tire leak and underinflation is transmitted; otherwise, a message indicating an impending tire leak is transmitted. After step S560, the process can proceed further to... Figure 6 The method 600 shown for monitoring a tire's transition from a fast to a slow leak (e.g., proceeding to step S610) is for real-time monitoring of whether a tire's transition from a fast to a slow leak.

[0078] In some embodiments, the tire may have a self-sealing function. For example, when a small foreign object punctures the tire, a self-sealing tire can automatically repair the puncture in the tread, thereby reducing the risk of tire leakage. In other words, in the event of a rapid tire leak, there is a possibility that the tire may change from a rapid leak to a slow leak.

[0079] Next, we will combine Figure 6 This application describes a method 600 for monitoring a tire's transition from a rapid leak to a slow leak, according to one embodiment of the present application. In some embodiments, if a rapid leak is determined to be occurring in the tire, further monitoring can be performed to determine whether the tire's transition from a rapid leak to a slow leak occurs.

[0080] Figure 6 A method 600 for monitoring the transition of a tire from a rapid leak to a slow leak, according to one embodiment of this application, is shown. Figure 6 The method 600 for monitoring a tire's transition from a rapid leak to a slow leak may include steps S610 to S660. In some embodiments, steps S610 to S660 may be performed only if a rapid leak is determined to have occurred in the tire.

[0081] In step S610, the tire temperature measurement value T at the current moment is obtained. Meas and tire pressure measurement value P Meas Similar to step S510, the tire pressure measurement value P in step S610... Meas and tire temperature measurement value T Meas This can be obtained through tire monitoring module 710. After step S610, step S620 can be executed.

[0082] In step S620, the tire temperature measurement value T at the same time obtained from step S610 is used as a basis. Meas and tire pressure measurement value P Meas Determine the tire pressure compensation value P at that moment.TC Similar to step S520, the tire pressure compensation value P in step S620... TC The result can be calculated using the formula described above, which will not be repeated here. After step S620, step S630 can be executed.

[0083] In step S630, a time-sliding window is determined with the current time as the endpoint, and multiple tire pressure compensation values ​​P are determined within the time-sliding window. TC The maximum time value P in WinMax Step S630 is similar to step S530 above, and will not be described again here. After step S630, step S640 can be executed.

[0084] In step S640, the tire pressure compensation value P at the current moment is obtained from step S620. TC and the maximum time value P determined in step S630 WinMax The time difference is determined. In some embodiments, the time difference is equal to the maximum time value P in the currently determined time slip window. WinMax The tire pressure compensation value P at the current moment TC The difference between them. After step S640, step S650 can be executed.

[0085] In step S650, the time difference obtained from step S640 is compared with the conversion threshold ΔP. rapid-slow The magnitude relationship between them is used to determine whether the time difference is less than the conversion threshold ΔP. rapid-slow Similar to the slow leak threshold and fast leak threshold mentioned above, the switching threshold ΔP rapid-slow This can be a pre-set value in memory used to determine whether a tire leaks from a rapid rate of air loss to a slow rate of air loss. In some embodiments, the transition threshold ΔP rapid-slow It can take any value from 2 kPa to 25 kPa, for example, 15 kPa. The key takeaway is that the conversion threshold ΔP... rapid-slow Less than the rapid leakage threshold ΔP rapid If the date difference is not less than the conversion threshold ΔP rapid-slow If the time difference is less than the conversion threshold, it means that the tire has not changed from a fast leak to a slow leak. In this case, we can return to step S610 to monitor in real time whether the tire has changed from a fast leak to a slow leak in the next moment. If the time difference is less than the conversion threshold, it means that the tire has changed from a fast leak to a slow leak. In this case, we can further execute step S660 to transmit the message that the tire has changed from a fast leak to a slow leak.

[0086] In some embodiments, step S650 may further include: acquiring the tire pressure measurement value P at the current moment. Meas To determine the tire pressure measurement value PMeas If the pressure is less than or equal to the underinflation threshold (e.g., 75% of the recommended tire pressure), it indicates that the tire is underinflated, and a message "Tire is slowly leaking and underinflated" is sent accordingly. If not, it indicates that the tire is not underinflated, and a message "Tire is slowly leaking" is sent accordingly.

[0087] When users receive a message that a tire is about to leak air, they are likely to experience negative emotions such as anxiety and irritability, which can easily interfere with their driving. The embodiments of this application can further monitor whether a slow leak is occurring when a rapid leak is detected, and promptly alert the user when the abnormal tire condition changes. This effectively alleviates the user's driving anxiety when encountering a tire leak that has transitioned from a rapid leak to a slow leak.

[0088] Next, we will combine Figure 7 This application describes a tire leak detection system 700 according to one embodiment. In some embodiments, the tire leak detection system 700 may be installed in a vehicle to monitor whether each tire in the vehicle is leaking air.

[0089] Figure 7 A tire leak detection system 700 according to one embodiment of this application is shown. Figure 7 As shown, the tire leak detection system 700 may include a tire monitoring module 710, a body control module (BCM) 720, a leak detection module 730, and a user alert module 740. The tire monitoring module 710 can be communicatively connected to the leak detection module 730 via the body control module 720, and the leak detection module 730 can be further communicatively connected to the user alert module 740. In some embodiments, the tire leak detection system 700 may be installed in a vehicle.

[0090] In some embodiments, the tire monitoring module 710 can be used to monitor the tire pressure and temperature of the associated tires to obtain the corresponding tire pressure measurement value P. Meas and tire temperature measurement value T Meas In some embodiments, the tire monitoring module 710 may include a tire pressure sensor and a tire temperature sensor, thereby enabling simultaneous acquisition of tire pressure and temperature of each tire of the vehicle (e.g., each of the four tires in a vehicle with four tires) at the same time. In some embodiments, the tire monitoring module 710 may begin monitoring the tire pressure and temperature of the associated tires when the vehicle is started and continue until the vehicle is completely turned off. In some embodiments, the tire monitoring module 710 acquires the corresponding tire pressure measurement value P. Meas and tire temperature measurement value T Meas Then the tire pressure measurement value P can be... Meas and tire temperature measurement value TMeas The data is transmitted to the vehicle control module 720.

[0091] In some embodiments, the vehicle control module 720 may be configured to receive tire pressure measurement values ​​P from the tire monitoring module 710. Meas and tire temperature measurement value T Meas (For example, data from the four tires collected by the tire pressure sensor and tire temperature sensor) is transmitted to the leak detection module 730. In an embodiment where the leak detection module 730 is integrated into the vehicle gateway, the body control module 720 can be configured to transmit the tire pressure measurement value P... Meas and tire temperature measurement value T Meas Transmitted to the gateway.

[0092] In some embodiments, the leak detection module 730 may be a tire pressure monitoring app integrated into a vehicle gateway. The leak detection module 730 may include a detection component 732 and a storage component 734. The detection component 732 may be based on the tire pressure measurement value P obtained from the tire monitoring module 710. Meas and tire temperature measurement value T Meas To perform the tire leak detection method. In some embodiments, the tire leak detection method may include any one or more of the following methods: the method 100 for detecting slow tire leaks, the method 500 for detecting fast tire leaks, and the method 600 for detecting a change from a fast leak to a slow leak, as described above. That is, the determination component 732 may base its judgment on the tire pressure compensation value P over a specific time period. TC Determine whether each tire of the vehicle (e.g., all four tires) is experiencing a slow leak, a fast leak, a change from a fast leak to a slow leak, or whether a low pressure occurs simultaneously with a slow leak, a fast leak, or a change from a fast leak to a slow leak.

[0093] Storage component 734 can be used to store data required by judgment component 732 during the execution of the tire leak detection method. In some embodiments, the data to be stored includes: monitoring date 415 within the monitoring date window 410 and the associated tire pressure value 425 for the monitoring day. As described above, the monitoring date 415 and the associated tire pressure value 425 stored within the monitoring date window 410 can be redefined each time the vehicle is started and stopped (e.g., using method 200 for determining the tire pressure value 450 for the current day and method 300 for determining the tire pressure values ​​440 for the remaining days, as described above). In some embodiments, the tire pressure judgment app performs a self-check update on the data stored in storage component 734 each time the vehicle is started and stopped. In some embodiments, storage component 734 can be a storage component of the electrically erasable programmable read-only memory (EEPROM) type.

[0094] If the determination component 732 determines, based on the tire leak detection method described above, that the tire leak condition is abnormal (including slow leak, fast leak, a change from fast leak to slow leak, or underpressure occurring simultaneously with slow leak, fast leak, or a change from fast leak to slow leak), the determination component 732 can transmit a related message to the user alert module 740. In some embodiments, the determination component 732 can send the determination result regarding the tire leak condition to the user alert module 740 via the vehicle bus.

[0095] In some embodiments, the user alert module 740 can be configured to send a message to the user in response to receiving a message indicating an abnormal tire leak. In some embodiments, the user alert module 740 can be one or both of the vehicle's central control system and instrument cluster. For example, when the user alert module 740 is the vehicle's central control system and instrument cluster, when the vehicle's central control system and instrument cluster receive a message indicating an abnormal tire leak, they can display separate alerts for different tires based on the tire abnormality judgment result sent by the leak judgment module 730.

[0096] In some embodiments, alerts for abnormal tire leak conditions can be provided through text prompts and icon displays on the central control panel and instrument cluster. For example, based on the assessment of whether each tire is about to leak air and whether it is underinflated, the specific alert methods of the vehicle's central control panel and instrument cluster may include: upon receiving a notification that a tire is determined to be about to leak air and that the tire is not underinflated (e.g., tire pressure measurement value P), Meas If a message indicates that a tire is leaking air (more than 75% of the recommended tire pressure), the corresponding tire will be highlighted in yellow on the instrument panel and displayed in yellow on the center console along with the text "Rapidly leaking air"; if a message indicates that a tire is about to leak air and its pressure is low (e.g., tire pressure measurement value P), the message will be displayed in yellow. Meas If the tire pressure is less than or equal to 75% of the recommended value, the corresponding tire will be highlighted in red on the instrument panel and displayed in red on the center console with the text "Rapid air leak, tire pressure too low".

[0097] Similarly, based on the judgment of whether each tire is slowly leaking air, whether it has changed from a fast leak to a slow leak, and whether it is underinflated, the specific reminder methods of the vehicle's central control and instrument panel can include: when a message indicates that a tire is judged to be slowly leaking air or has changed from a fast leak to a slow leak, and the tire is not underinflated, the corresponding tire on the instrument panel is highlighted in yellow, and the corresponding tire displayed on the central control is highlighted in yellow with the text prompt "Slow leak in progress"; when a message indicates that a tire is judged to be slowly leaking air or has changed from a fast leak to a slow leak, and the tire is underinflated, the corresponding tire on the instrument panel is highlighted in red, and the corresponding tire displayed on the central control is highlighted in red with the text prompt "Slow leak in progress, tire pressure too low".

[0098] This application utilizes temperature-compensated tire pressure values ​​to determine the speed of leaks, and sets different thresholds for judging speed of leaks when the vehicle is running, thus making the judgment more accurate. Furthermore, this application can immediately detect whether a slow leak occurred during the vehicle's parking period when it is used again after being parked for several days, allowing drivers and passengers to effectively and promptly monitor tire conditions, which is more conducive to driving safety.

[0099] According to another aspect of this application, a computer-readable storage medium is provided, wherein instructions are stored that, when executed by a processor, cause the processor to perform any of the tire leak detection methods described above. The computer-readable medium referred to in this application includes various types of computer storage media, and can be any available medium accessible by a general-purpose or special-purpose computer. For example, the computer-readable medium may include RAM, ROM, EPROM, E... 2 PROM, registers, hard disks, removable disks, CD-ROMs or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other temporary or non-temporary medium capable of carrying or storing desired units of program code in the form of instructions or data structures and accessible by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. As used herein, disks typically magnetically copy data, while discs optically copy data using lasers. Combinations of the above should also be included within the scope of computer-readable media. An exemplary storage medium is coupled to a processor so that the processor can read and write information from / to the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and storage medium may reside as discrete components in the user terminal.

[0100] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Those skilled in the art can conceive of other feasible variations or substitutions based on the technical scope disclosed in this application, and such variations or substitutions are all covered within the scope of protection of this application. Where there is no conflict, the embodiments and features described in the embodiments of this application can also be combined with each other. The scope of protection of this application is determined by the claims.

Claims

1. A method of monitoring for tire air leaks, the method comprising: The tire leak monitoring method comprises the following steps executed each time the vehicle is started: determining a monitoring date window, wherein the monitoring date window is a date interval segment with a current monitoring date as the end point; determining a monitoring day tire pressure value corresponding to each monitoring date within the range of the monitoring date window, wherein the monitoring day tire pressure value is a tire pressure compensation value associated with a monitoring date, and the plurality of monitoring day tire pressure values within the range of the monitoring date window comprises a current day tire pressure value associated with the current monitoring date; determining that the maximum monitoring day tire pressure value within the range of the monitoring date window is a maximum date value; determining that the difference between the maximum date value and the current day tire pressure value is a date difference value; and comparing the size between the date difference value and a slow leak threshold value, and determining that a tire has a slow leak if the date difference value is greater than the slow leak threshold value, wherein the tire pressure compensation value is calculated by the following formula: wherein is the tire pressure compensation value, is the tire pressure measurement value in kilopascal, is the tire temperature measurement value in degrees Celsius, is the tire temperature reference value in degrees Celsius.

2. The tire air leak monitoring method of claim 1 wherein, The determining of the monitoring day tire pressure value corresponding to each monitoring date within the range of the monitoring date window comprises determining the current day tire pressure value; wherein the determining of the current day tire pressure value comprises: obtaining the tire temperature measurement value and the tire pressure measurement value of the tire at the current time; obtaining the tire pressure compensation value at the current time based on the tire temperature measurement value and the tire pressure measurement value; determining whether the current day tire pressure value exists at present; in the case where the current day tire pressure value does not exist, assigning the current day tire pressure value with the tire pressure compensation value at the current time; and in the case where the current day tire pressure value has existed, comparing the size between the tire pressure compensation value at the current time and the current day tire pressure value, and updating the current day tire pressure value with the tire pressure compensation value at the current time if the tire pressure compensation value at the current time is less than the current day tire pressure value.

3. The tire air leak monitoring method of claim 1 wherein, The determining of the monitoring day tire pressure value corresponding to each monitoring date within the range of the monitoring date window comprises determining a remaining day tire pressure value, wherein the remaining day tire pressure value comprises the monitoring day tire pressure values within the range of the monitoring date window except for the current day tire pressure value; wherein the determining of the remaining day tire pressure value comprises: determining whether the remaining day tire pressure value has an existing value and a vacancy value; in the case where both the existing value and the vacancy value exist, determining an existing monitoring date associated with the existing value and a vacancy monitoring date associated with the vacancy value in the remaining day tire pressure value, determining the existing monitoring date closest to the vacancy monitoring date as a closest monitoring date among the existing monitoring dates before the vacancy monitoring date, and assigning the vacancy value with the existing value associated with the closest monitoring date; and in the case where only the vacancy value exists, assigning the vacancy value with the current day tire pressure value.

4. The tire air leak monitoring method of claim 2 wherein, The tire leak monitoring method further comprises: redetermining the current day tire pressure value each time the vehicle is turned off.

5. A method of monitoring for a tire puncture, the method comprising: The tire leak monitoring method comprises the following steps executed when the vehicle is in the running state: acquiring, in real time, a tire temperature measurement value and a tire pressure measurement value of the tire at a current time point; determining, in real time, a tire pressure compensation value at the current time point based on the tire temperature measurement value and the tire pressure measurement value acquired in real time; determining, in real time, a maximum time point value within a time sliding window, wherein a time length of the time sliding window is equal to a time period between the current time point and a vehicle start time point when the time period is less than a threshold time period, and the time length of the time sliding window is equal to the threshold time period when the time period is greater than the threshold time period, the threshold time period being any one of 5 minutes to 60 minutes, the maximum time point value being a maximum value among a plurality of tire pressure compensation values within a range of the time sliding window; determining, in real time, a time point difference value based on the tire pressure compensation value at the current time point and the maximum time point value, wherein the time point difference value is equal to a difference between the maximum time point value and the tire pressure compensation value at the current time point; and comparing, in real time, a size relationship between the time point difference value and a fast leak threshold value, and determining that the tire has a fast leak when the time point difference value is greater than the fast leak threshold value, wherein the tire pressure compensation value is calculated by the following formula: wherein is the tire pressure compensation value, is the tire pressure measurement value in kilopascal, is the tire temperature measurement value in degrees Celsius, is a tire temperature reference value in degrees Celsius.

6. The method of claim 5, wherein, The tire leak monitoring method further comprises: continuing to determine, in real time, the time point difference value when it is determined that the tire has the fast leak; and comparing, in real time, a size relationship between the time point difference value and a conversion threshold value, and determining that the tire is converted from the fast leak to a slow leak when the time point difference value is less than the conversion threshold value.

7. A computer-readable storage medium having stored therein instructions, the computer-readable storage medium comprising: The instructions, when executed by a processor, cause the processor to perform the tire leak monitoring method of any one of claims 1-6.

8. A tire pressure monitoring system characterized by, The tire leak monitoring system comprises: a tire monitoring module configured to: monitor, in real time, a tire temperature measurement value and a tire pressure measurement value of a tire at a current time point and transmit the tire temperature measurement value and the tire pressure measurement value each time a vehicle starts; a leak judgment module communicatively connected with the tire monitoring module, the leak judgment module being configured to perform the following steps each time the vehicle starts: determining a monitoring date window, wherein the monitoring date window is a date interval segment with a current monitoring date as an end point; determining, within a range of the monitoring date window, a monitoring day tire pressure value corresponding to each monitoring date, wherein the monitoring day tire pressure value is a tire pressure compensation value associated with a monitoring date, a plurality of monitoring day tire pressure values within a range of the monitoring date window including a current day tire pressure value associated with the current monitoring date, the current day tire pressure value being determined based on the tire temperature measurement value and the tire pressure measurement value; determining a maximum monitoring day tire pressure value within the range of the monitoring date window as a maximum date value; determining a difference between the maximum date value and the current day tire pressure value as a date difference value; comparing the size between the date difference value and a slow leak threshold value, and determining that the tire has a slow leak in a case that the date difference value is greater than the slow leak threshold value; and transmitting a message that the tire has the slow leak in a case that it is determined that the tire has the slow leak; and a user alerting module communicatively connected with the leak determination module, the user alerting module configured to: deliver the message to a user in response to receiving the message that the tire has the slow leak, wherein the tire pressure compensation value is calculated by the following equation: wherein is the tire pressure compensation value, is the tire pressure measurement value in kilopascal, is the tire temperature measurement value in degrees Celsius, is a tire temperature reference value in degrees Celsius.

9. A tire pressure monitoring system characterized by, The tire leak monitoring system comprises: a tire monitoring module configured to: monitor tire temperature and pressure measurements of a tire in real time at a current time and transmit the tire temperature and pressure measurements in a case that a vehicle is in an operating state; and a leak determination module communicatively connected with the tire monitoring module, the leak determination module configured to perform the following steps in a case that the vehicle is in the operating state: acquire the tire temperature and pressure measurements of the tire at the current time in real time; determine a tire pressure compensation value at the current time in real time based on the tire temperature and pressure measurements acquired in real time; determine a maximum time value in real time within a time sliding window, wherein the time sliding window has a time length equal to a time period between the current time and a vehicle start time in a case that the time period is less than a threshold period, and the time sliding window has a time length equal to the threshold period in a case that the time period is greater than the threshold period, the threshold period being any one of 5 minutes to 60 minutes, the maximum time value being a maximum value among a plurality of tire pressure compensation values within the time sliding window; determine a time difference value in real time based on the tire pressure compensation value at the current time and the maximum time value, wherein the time difference value is equal to a difference between the maximum time value and the tire pressure compensation value at the current time; compare the size between the time difference value and a fast leak threshold value in real time, and determine that the tire has a fast leak in a case that the time difference value is greater than the fast leak threshold value; and a user alerting module communicatively connected with the leak determination module, the user alerting module configured to: deliver the message to a user in response to receiving the message that the tire has the fast leak, wherein the tire pressure compensation value is calculated by the following equation: wherein is the tire pressure compensation value, is the tire pressure measurement value in kilopascal, is the tire temperature measurement value in degrees Celsius, is a tire temperature reference value in degrees Celsius.

10. A vehicle characterized by comprising: The vehicle comprises the tire leak monitoring system of claim 8 or 9.

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