Tire pressure monitoring method, device, tpms sensor and readable storage medium

Abstract

The application relates to a tire pressure monitoring method and device, a TPMS sensor and a readable storage medium. In view of the fact that the speed of a vehicle has a certain influence on tire pressure and sensing data needs to be sent only in some cases during the driving process of the vehicle, the current driving speed of the vehicle is considered as a factor for tire pressure monitoring, and based on the current running state, sensing data collected under the current running state is sent to a terminal when the historical pressure difference value, the current driving speed and the accumulated time length of the current running state all meet corresponding sending conditions, so that the TPMS sensor can send sensing data according to specific driving conditions and enter a corresponding specific running state. Since the fault risk is different under different running states, for example, a state with a small fault risk can adopt a long interval time length, therefore, the TPMS sensor can be awakened according to a specific interval time length corresponding to a specific running state, so that the safety monitoring of the vehicle is ensured while the power consumption of the TPMS sensor is reduced.

Description

Technical Field

[0001] This application relates to the field of tire pressure monitoring technology, and in particular to a tire pressure monitoring method, device, TPMS sensor and readable storage medium. Background Technology

[0002] A tire pressure monitoring system (TPMS) automatically monitors tire pressure in real time while a vehicle is in motion, issuing alarms for tire leaks and low pressure to ensure driving safety. A TPMS system mainly consists of two parts: a remote tire pressure monitoring module installed on each tire and a central monitor (LCD / LED display) mounted on the dashboard. The module directly installed in each tire measures tire pressure and temperature, modulating the measured signals and transmitting them via high-frequency radio waves (RF). The central monitor receives the signals transmitted by the TPMS monitoring module and displays the pressure and temperature data of each tire on its screen for user reference. If the tire pressure, temperature, or condition is abnormal, the central monitor issues an alarm signal to alert the user to take necessary measures.

[0003] TPMS sensors are powered by button batteries, which cannot be replaced or recharged. Since TPMS sensors are installed inside the tires, replacement is inconvenient. Therefore, a longer TPMS sensor lifespan is more user-friendly. Due to the limited capacity of button batteries, TPMS sensors need to operate with low power consumption, but they also need to monitor tire pressure and temperature in real time while the vehicle is in motion, promptly reporting any abnormalities to the user. Therefore, how to reduce TPMS sensor power consumption while ensuring vehicle safety monitoring is a pressing issue that needs to be addressed. Summary of the Invention

[0004] This application provides a low-power tire pressure monitoring method, device, computer equipment, and readable storage medium, which can realize real-time monitoring of tire pressure while the vehicle is in motion.

[0005] A tire pressure monitoring method, applied to a TPMS sensor, the method comprising:

[0006] Determine the current running status;

[0007] The duration of time spent in the current running state is counted to obtain the cumulative duration of the current running state;

[0008] Obtain the tire pressure value and current driving speed collected under the current operating state, and obtain the historical pressure difference value of the tire pressure value;

[0009] Based on the current operating state, when the historical differential pressure value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state will be sent to the terminal, and the terminal will enter the corresponding specific operating state to wake up according to the specific interval duration corresponding to the specific operating state and collect the sensing data in the specific operating state.

[0010] In some embodiments, the current operating state is a static pressure change state;

[0011] When the historical differential pressure value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including:

[0012] If the historical pressure difference value is less than the static pressure difference threshold and the current driving speed is greater than the speed threshold, the sensing data collected under the static air pressure change state will be sent to the terminal, and the driving air pressure will remain unchanged, so as to wake up according to the first interval.

[0013] If the historical pressure difference value is less than the static pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the static air pressure change state is greater than the first duration threshold, then the static air pressure remains unchanged state, and the vehicle is woken up according to the second interval duration; the second interval duration is greater than the first interval duration.

[0014] If the historical pressure difference value is greater than the static pressure difference threshold, the sensing data collected under the static pressure change state will be sent to the terminal, and the system will control the system to re-enter the static pressure change state.

[0015] In some embodiments, the step of counting the duration of entering the current running state to obtain the cumulative duration of the current running state includes:

[0016] The duration of entering the static pressure change state is counted to obtain the first pre-stored duration;

[0017] If the historical pressure difference value is greater than the static pressure difference threshold, the first pre-stored duration is reset to zero, and the first pre-stored duration after being reset to zero is used as the cumulative duration of the static pressure change state.

[0018] In some embodiments, the current operating state is a static pressure constant state;

[0019] When the historical differential pressure value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including:

[0020] If the historical pressure difference value is less than the static pressure difference threshold and the current driving speed is greater than the speed threshold, the sensing data collected under the static air pressure constant state will be sent to the terminal, and the driving air pressure constant state will be entered to wake up according to the first interval.

[0021] If the historical pressure difference value is less than the static pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the static pressure constant state is greater than the second duration threshold, then the sensing data collected in the static pressure constant state will be sent to the terminal, and the system will control the system to re-enter the static pressure constant state.

[0022] If the historical pressure difference value is greater than the static pressure difference threshold, the sensing data collected under the static pressure constant state will be sent to the terminal, and the static pressure change state will be entered to wake up according to the third interval.

[0023] In some embodiments, the current operating state is a state of constant air pressure during operation;

[0024] When the historical differential pressure value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including:

[0025] If the historical pressure difference value is less than the driving pressure difference threshold and the current driving speed is less than the speed threshold, the sensing data collected under the driving air pressure constant state will be sent to the terminal, and the driving air pressure constant state will be exited to wake up according to the fourth interval.

[0026] If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure constant state is greater than the driving stability time threshold, then the sensing data collected in the driving air pressure constant state will be sent to the terminal, and the driving stability state will be entered to wake up according to the fifth interval duration.

[0027] If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected under the driving air pressure constant state will be sent to the terminal, and the driving air pressure change state will be entered to wake up according to the sixth interval.

[0028] The durations of the fourth, fifth, and sixth intervals decrease sequentially.

[0029] In some embodiments, the current operating state is a driving air pressure change state. When the historical pressure difference value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including:

[0030] If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure constant state is less than the driving stability time threshold, then the sensing data collected under the driving air pressure change state will be sent to the terminal, and the driving air pressure constant state will be entered to wake up according to the first interval duration.

[0031] If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the driving air pressure change state is greater than the third duration threshold, then the sensing data collected under the driving air pressure change state will be sent to the terminal, and the terminal will enter the exit driving air pressure constant state to wake up according to the fourth interval duration.

[0032] If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure constant state is greater than the driving stability time threshold, then the sensing data collected under the driving air pressure change state will be sent to the terminal, and the driving stability state will be entered to wake up according to the fifth interval duration.

[0033] If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected under the driving air pressure change state will be sent to the terminal, and the system will control the system to re-enter the driving air pressure change state.

[0034] In some embodiments, the step of counting the duration of entering the current running state to obtain the cumulative duration of the current running state includes:

[0035] The duration of entering the aforementioned driving air pressure change state is counted to obtain the second pre-stored duration;

[0036] If the historical pressure difference value is greater than the driving pressure difference threshold, the second pre-stored duration is reset to zero, and the reset second pre-stored duration is used as the cumulative duration of the driving air pressure change state.

[0037] In some embodiments, the current operating state is a stable driving state. When the historical pressure difference value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state is sent to the terminal, and the system enters a corresponding specific operating state, including:

[0038] If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving stability state is greater than the fourth duration threshold, then the sensing data collected in the driving stability state will be sent to the terminal, and the system will control the system to re-enter the driving stability state.

[0039] If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected in the driving stable state will be sent to the terminal, and the driving air pressure change state will be entered to wake up according to the sixth interval.

[0040] If the historical pressure difference value of the tire pressure is less than the driving pressure difference threshold, and the current driving speed is less than the speed threshold, the sensing data collected in the driving stable state will be sent to the terminal, and the vehicle will enter the exit driving pressure unchanged state to wake up according to the fourth interval.

[0041] In some embodiments, the current operating state is the state of constant air pressure after exiting driving. When the historical pressure difference value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including:

[0042] If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected in the state of exiting driving with unchanged air pressure will be sent to the terminal, and the driving air pressure change state will be entered to wake up according to the sixth interval.

[0043] If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving pressure constant state is less than the driving stability time threshold, then the sensing data collected when exiting the driving pressure constant state will be sent to the terminal, and the driving pressure constant state will be entered to wake up according to the first interval duration.

[0044] If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving pressure constant state is greater than the driving stabilization time threshold, then the sensing data collected when exiting the driving pressure constant state will be sent to the terminal, and the driving stabilization state will be entered to wake up according to the fifth interval duration.

[0045] If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of exiting the driving pressure constant state is greater than the fifth duration threshold, then the sensing data collected in the driving pressure constant state will be sent to the terminal, and the terminal will enter the static pressure constant state to wake up according to the second interval duration.

[0046] In some embodiments, the method further includes:

[0047] Determine whether the device is in a storage state; in the storage state, it will be woken up at a seventh interval.

[0048] If the vehicle is in the storage state, the initial tire pressure value collected in the storage state is obtained.

[0049] If the initial tire pressure value is greater than the assembled tire pressure value, the sensing data collected in the storage state will be sent to the terminal, and the system will enter a static pressure change state to wake up according to the third interval.

[0050] A tire pressure monitoring device, the device comprising:

[0051] The determination module is used to determine the current running status;

[0052] The timing module counts the duration of the current running state to obtain the cumulative duration of the current running state;

[0053] The acquisition module is used to acquire the tire pressure value and current driving speed collected under the current operating state, and to acquire the historical pressure difference value of the tire pressure value;

[0054] The control module is used to send the sensing data collected in the current operating state to the terminal when the historical differential pressure value, the current driving speed and the cumulative duration of the current operating state all meet the corresponding transmission conditions, and enter the corresponding specific operating state to wake up according to the specific interval duration corresponding to the specific operating state and collect the sensing data in the specific operating state.

[0055] A TPMS sensor, the TPMS sensor being used to implement the steps of the method described in any of the above-mentioned embodiments.

[0056] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described above.

[0057] Since vehicle speed affects tire pressure during driving, and many factors influence vehicle performance and user safety, current vehicle speed must be considered in tire pressure monitoring. Furthermore, during driving, sensing data may only need to be transmitted under certain conditions. Therefore, based on the current operating state, when historical pressure difference, current speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state will be sent to the terminal. This allows the TPMS sensor to transmit sensing data according to specific driving conditions and enter the corresponding specific operating state. Because the failure risk varies in different operating states—for example, a longer interval can be used in states with low failure risk—the TPMS sensor can be woken up according to a specific interval corresponding to a specific operating state, ensuring vehicle safety monitoring while reducing the power consumption of the TPMS sensor. Attached Figure Description

[0058] Figure 1 This is a schematic flowchart of a tire pressure monitoring method according to an embodiment of this application;

[0059] Figure 2 This is a schematic flowchart of a tire pressure monitoring method according to another embodiment of this application;

[0060] Figure 3 This is a schematic flowchart of a tire pressure monitoring method according to another embodiment of this application. Detailed Implementation

[0061] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0062] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0063] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly. The connection can be a direct connection or an indirect connection.

[0064] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0065] Figure 1 This is a schematic flowchart of a tire pressure monitoring method according to an embodiment. The tire pressure monitoring method is applied to a TPMS sensor and can be executed by the TPMS sensor. The method includes steps S110 to S140.

[0066] Step S110: Determine the current running status.

[0067] It is understandable that the current operating status is used to characterize the vehicle's driving status and tire pressure changes monitored at the current moment.

[0068] Step S120: Calculate the duration of entering the current running state to obtain the cumulative duration of the current running state.

[0069] Each time a new running state is entered, the time when that state is entered can be recorded. Once the current running state is determined, the duration of the current running state can be calculated based on the recorded time, thus obtaining the cumulative duration of the current running state.

[0070] Step S130: Obtain the tire pressure value and current driving speed collected under the current operating state, and obtain the historical pressure difference value of the tire pressure value.

[0071] In each operating state, tire pressure and current driving speed are continuously collected to obtain multiple tire pressure values ​​and driving speeds. The steps of this method are as follows: after determining the current operating state, all tire pressure values ​​collected in the current operating state and the driving speed at the current moment can be obtained, and then the historical pressure difference value of the tire pressure values ​​can be obtained. The historical pressure difference value is the difference between the maximum tire pressure value and the minimum tire pressure value among all tire pressure values ​​obtained in the current operating state.

[0072] Step S140: Based on the current operating state, when the historical differential pressure value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state will be sent to the terminal, and the terminal will enter the corresponding specific operating state to wake up according to the specific interval duration corresponding to the specific operating state and collect the sensing data in the specific operating state.

[0073] It is understood that sensing data will be collected in each operating state, and the sensing data may include at least the tire pressure value. In addition, the sensing data may also include one or more of the following: current operating state data, TPMS sensor identifier, TPMS sensor temperature data, TPMS sensor battery data, and driving speed, thereby enabling monitoring of temperature, battery level, speed, etc. Historical pressure difference value, current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions. This can include historical pressure difference value meeting the first condition, current driving speed meeting the second condition, and the cumulative duration of the current operating state meeting the third condition. Combining the first, second, and third conditions reveals the vehicle's current driving status and, consequently, the probability of a vehicle malfunction. Therefore, when all three conditions are met, the sensing data collected in the current operating state can be sent to the terminal, and the vehicle enters the corresponding specific operating state. This allows the TPMS sensor to wake up at specific intervals corresponding to the specific operating state, collecting sensing data in that specific operating state, thus enabling low-power monitoring of corresponding risk conditions. In one embodiment, the number of at least one of the first, second, and third conditions may include multiple conditions. For example, if there are two first conditions, the historical pressure difference value, the current driving speed, and the cumulative duration of the current operating state all satisfy the corresponding transmission condition. This can be achieved by the historical pressure difference value satisfying one of the first conditions, the current driving speed satisfying the second condition, and the cumulative duration of the current operating state satisfying the third condition. When the number of at least one of the first, second, and third conditions includes multiple conditions, different combinations of the first, second, and third conditions can characterize different driving conditions of the vehicle and reflect different probabilities of vehicle failure risk. Therefore, the specific operating state entered can be different depending on the combination of different conditions, thereby allowing the vehicle to be woken up at different intervals to collect sensing data and reduce the power consumption of the TPMS sensor.

[0074] The aforementioned tire pressure monitoring method determines the current operating state, calculates the duration of the current operating state to obtain the cumulative duration of the current operating state, acquires the tire pressure value and current driving speed collected in the current operating state, and obtains the historical pressure difference value of the tire pressure value. Finally, based on the current operating state, when the historical pressure difference value, current driving speed, and cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state is sent to the terminal. The current driving speed can be used to characterize the vehicle's driving state, which has a certain impact on tire pressure. Including the vehicle's current driving speed in the tire pressure monitoring considerations can optimize the range of tire pressure value monitoring, allowing the TPMS sensor to send sensing data according to specific driving conditions, thereby ensuring vehicle safety monitoring while reducing power consumption. In addition, considering that the fault risk is different in different operating states, when the corresponding transmission conditions are met, the TPMS sensor enters the corresponding specific operating state and wakes up according to the specific interval time corresponding to the specific operating state. This allows for flexible adjustment of the interval time based on the fault risk. For example, a longer interval time can be used in a state with low fault risk, thus further reducing the power consumption of the TPMS sensor.

[0075] In one embodiment, the current operating state can be a static pressure change state; when the historical pressure difference value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state will be sent to the terminal, and the system will enter the corresponding specific operating state, including steps S241 to S243, such as... Figure 2 As shown.

[0076] Step S241: If the historical pressure difference value is less than the static pressure difference threshold and the current driving speed is greater than the speed threshold, the sensing data collected under the static air pressure change state will be sent to the terminal, and the driving air pressure will remain unchanged, so as to wake up according to the first interval.

[0077] It can be understood that the static tire pressure change state indicates that the car is stationary while in motion, and the tire pressure fluctuates. In this static tire pressure change state, if the historical pressure difference measured is less than the static pressure difference threshold, it indicates that the tire pressure has stabilized. Simultaneously, if the current driving speed is greater than the speed threshold, it indicates that the car has started moving. At this point, the sensing data collected in the static tire pressure change state is sent to the terminal to monitor the tire pressure. Simultaneously, the car enters a driving tire pressure stability state, waking up at a first interval to reduce TPMS sensor power consumption. The speed threshold can be a boundary value between the car's stationary and driving states, for example, 1 m / s. The static pressure difference threshold can be the tire pressure fluctuation threshold when the car is stationary. When this threshold is exceeded, it indicates that the tire pressure is unstable; when it is not exceeded, it indicates that the tire pressure is stable. In one embodiment, the static pressure difference threshold can be, for example, 10 kPa.

[0078] Step S242: If the historical pressure difference value is less than the static pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the static air pressure change state is greater than the first duration threshold, then enter the static air pressure unchanged state to wake up according to the second interval duration; the second interval duration is greater than the first interval duration.

[0079] In a static pressure change state, if the historical pressure difference value of the tire pressure is less than the static pressure difference threshold, it indicates that the vehicle tire pressure is stable. If the current driving speed is less than the speed threshold, it indicates that the vehicle is still stationary. Simultaneously, if the cumulative duration of the static pressure change state is greater than a first duration threshold, it indicates that the vehicle is stationary and the tire pressure has remained stable for a considerable period. At this point, the vehicle can enter a static pressure constant state to wake up according to a second interval, where the second interval is longer than the first interval, thereby reducing the power consumption of the TPMS sensor. In one embodiment, the second interval can be 16 seconds, and the first interval can be 2 seconds. The first duration threshold can be 60 seconds.

[0080] Step S243: If the historical pressure difference value is greater than the static pressure difference threshold, the sensing data collected under the static pressure change state will be sent to the terminal, and the system will control the system to re-enter the static pressure change state.

[0081] It is understandable that if the historical pressure difference value is greater than the static pressure difference threshold, it indicates that the tire pressure of the car is fluctuating significantly. At this time, the sensing data collected under the static pressure change state will be sent to the terminal to monitor the tire pressure. At the same time, the system will control the system to re-enter the static pressure change state as the current operating state, and then continue execution. Figure 2 The method steps from step S110 to step S140.

[0082] In one embodiment, the current operating state is a static pressure change state. The time taken to enter the current operating state is counted to obtain the cumulative time of the current operating state, which includes steps S221 and S222.

[0083] Step S221: Calculate the duration of entering the static pressure change state to obtain the first pre-stored duration.

[0084] Step S222: If the historical pressure difference value is greater than the static pressure difference threshold, the first pre-stored duration is reset to zero, and the reset first pre-stored duration is used as the cumulative duration of the static pressure change state.

[0085] It is understandable that, in order to determine whether the cumulative duration of maintaining the static pressure change state is greater than the first duration threshold, the statistical duration of entering the static pressure change state is used as the first pre-stored duration. When a historical pressure difference value is greater than the static pressure difference threshold, the first pre-stored duration is reset to zero, so that the cumulative duration of the static pressure change state can be counted again, thereby improving the accuracy of tire pressure monitoring.

[0086] In one embodiment, the current operating state can be a static air pressure constant state; when the historical pressure difference value, the current driving speed and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state will be sent to the terminal and the corresponding specific operating state will be entered, including steps S341 to S343.

[0087] Step S341: If the historical pressure difference value is less than the static pressure difference threshold and the current driving speed is greater than the speed threshold, the sensing data collected under the static air pressure constant state will be sent to the terminal, and the driving air pressure constant state will be entered to wake up according to the first interval.

[0088] It can be understood that the static tire pressure constant state indicates that the car is stationary and the tire pressure has no fluctuation or the fluctuation is negligible. In the static tire pressure constant state, if the historical pressure difference value of the measured tire pressure is less than the static pressure difference threshold, it means that the tire pressure has become stable. At the same time, if the current driving speed is greater than the speed threshold, it means that the car has started to move. At this time, the sensing data collected in the static tire pressure change state will be sent to the terminal to monitor the tire pressure. At the same time, the car will enter the driving tire pressure constant state to wake up according to the first interval to reduce the power consumption of the TPMS sensor.

[0089] Step S342: If the historical pressure difference value is less than the static pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the static air pressure constant state is greater than the second duration threshold, then the sensing data collected in the static air pressure constant state will be sent to the terminal, and the system will control the system to re-enter the static air pressure constant state.

[0090] It is understood that, under a static tire pressure constant state, if the historical tire pressure difference is less than the static pressure difference threshold, it indicates that the vehicle tire pressure is stable. If the current driving speed is less than the speed threshold, it indicates that the vehicle is still stationary. Simultaneously, if the cumulative duration of the static tire pressure constant state is greater than a second duration threshold, it indicates that the vehicle has been stationary and the tire pressure has remained stable for a considerable period. At this point, the sensing data is sent to the terminal, and the vehicle is controlled to re-enter the static tire pressure constant state, waking up according to the second interval duration. The second interval duration is longer than the first interval duration, thereby reducing the power consumption of the TPMS sensor itself. In one embodiment, the second duration threshold can be 1 hour.

[0091] Step S343: If the historical pressure difference value is greater than the static pressure difference threshold, the sensing data collected under the static pressure constant state will be sent to the terminal, and the static pressure change state will be entered to wake up according to the third interval.

[0092] It is understandable that if the historical pressure difference value is greater than the static pressure difference threshold, it indicates that the tire pressure of the car is fluctuating significantly. At this time, the sensing data collected under the static pressure constant state will be sent to the terminal to realize tire pressure monitoring. At the same time, it will enter the static pressure change state as the current operating state, and then continue to execute. Figure 2 The method steps from S110 to S140. Specifically, the TPMS sensor is woken up at a third interval during a static pressure change state, thus reducing the power consumption of the TPMS sensor.

[0093] In one embodiment, the third interval duration can be equal to the first interval duration. Under constant static pressure, the TPMS sensor wakes up according to the second interval duration. Since the first interval duration is shorter than the second interval duration, and the third interval duration is equal to the first interval duration, the third interval duration is shorter than the second interval duration. Therefore, the wake-up time of the TPMS sensor under changing static pressure is shorter than that under constant static pressure. This allows for flexible adjustment of the TPMS sensor's wake-up frequency according to different states, thereby reducing the TPMS sensor's power consumption while ensuring safe monitoring. In one embodiment, the first and third interval durations can be set to 2 seconds, and the second interval duration can be set to 16 seconds.

[0094] In one embodiment, the current operating state can be a state where the driving air pressure remains unchanged; when the historical pressure difference value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state will be sent to the terminal, and the corresponding specific operating state will be entered, including steps S441 to S443.

[0095] Step S441: If the historical pressure difference value is less than the driving pressure difference threshold and the current driving speed is less than the speed threshold, the sensing data collected under the driving air pressure constant state will be sent to the terminal, and the terminal will exit the driving air pressure constant state to wake up according to the fourth interval.

[0096] It can be understood that the constant tire pressure state indicates that the vehicle is in motion and the tire pressure is stable. In this state, if the historical tire pressure difference value is less than the driving pressure difference threshold, it indicates that the tire pressure remains stable while the vehicle is in motion. Simultaneously, if the current driving speed is less than a speed threshold, it indicates that the vehicle is beginning to brake. At this point, the sensing data collected in the constant tire pressure state is sent to the terminal to monitor the tire pressure. The system then enters and exits the constant tire pressure state, waking up at a fourth interval to reduce TPMS sensor power consumption. The driving pressure difference threshold can be a threshold for tire pressure fluctuations during vehicle movement. Exceeding this threshold indicates unstable tire pressure while in motion, while remaining within the threshold indicates stable tire pressure. In one embodiment, the driving pressure difference threshold can be 5 kPa.

[0097] Step S442: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure constant state is greater than the driving stabilization time threshold, then the sensing data collected under the driving air pressure constant state will be sent to the terminal, and the driving stabilization state will be entered to wake up according to the fifth interval duration.

[0098] It is understood that, under constant tire pressure, if the historical tire pressure difference is less than the driving pressure difference threshold, it indicates that the tire pressure is still stable while the vehicle is in motion. If the current driving speed is greater than the speed threshold, it indicates that the vehicle is still in motion. Simultaneously, if the cumulative duration of the constant tire pressure state is greater than the driving stability time threshold, it indicates that the vehicle is in motion and the tire pressure has remained stable for a considerable period. At this point, the vehicle can enter a driving stability state and be woken up according to the fifth interval. In one embodiment, the driving stability time threshold can be 600 seconds.

[0099] Step S443: If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected under the driving air pressure constant state will be sent to the terminal, and the driving air pressure change state will be entered to wake up according to the sixth interval duration; wherein, the fourth interval duration, the fifth interval duration and the sixth interval duration decrease sequentially.

[0100] It is understandable that if the historical pressure difference value is greater than the driving pressure difference threshold, it indicates that the tire pressure fluctuates greatly when the car is in motion. In order to reduce the driving risk, the sensing data collected in the static pressure change state can be sent to the terminal to realize tire pressure monitoring. At the same time, the driving pressure change state is entered to wake up according to the sixth interval.

[0101] Based on the constant tire pressure during driving, the current driving state and tire pressure state of the vehicle can be quickly determined according to historical pressure difference values, current driving speed, and the cumulative duration of the current operating state, thereby entering the corresponding state and waking up at different intervals, thus reducing power consumption. In one embodiment, the fourth interval can be 4 seconds, the fifth interval can be 2 seconds, and the sixth interval can be 1 second.

[0102] In one embodiment, the current operating state may be the driving air pressure change state. When the historical pressure difference value, the current driving speed and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state will be sent to the terminal, and the corresponding specific operating state may be entered, which may include steps S541 to S544.

[0103] Step S541: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure constant state is less than the driving stability time threshold, then the sensing data collected under the driving air pressure change state will be sent to the terminal, and the driving air pressure constant state will be entered to wake up according to the first interval duration.

[0104] The driving tire pressure change state indicates that the vehicle is in motion and the tire pressure fluctuates. In this state, if the historical pressure difference measured is less than the driving pressure difference threshold, it indicates that the tire pressure remains stable while the vehicle is in motion. Simultaneously, if the current driving speed is greater than a speed threshold, it indicates that the vehicle is still in motion. If the cumulative duration of the driving tire pressure constant state is less than the driving stability time threshold, it indicates that the vehicle is in motion and the tire pressure has remained stable for a considerable period. At this point, the sensing data collected in the driving tire pressure constant state can be sent to the terminal to monitor the vehicle's tire pressure. Simultaneously, the vehicle enters the driving tire pressure constant state and is woken up at a first interval. In the driving tire pressure change state, the TPMS sensor wakes up at a sixth interval, with the first interval being longer than the sixth interval, thus reducing the TPMS sensor's power consumption. In one embodiment, the driving stability time threshold can be 600 seconds.

[0105] Step S542: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the driving air pressure change state is greater than the exit driving time threshold, then the sensing data collected under the driving air pressure change state will be sent to the terminal, and the exit driving air pressure unchanged state will be entered to wake up according to the fourth interval duration.

[0106] When the tire pressure changes during driving, if the historical pressure difference value measured is less than the driving pressure difference threshold, it indicates that the tire pressure is still stable while the vehicle is in motion. If the current driving speed is less than the speed threshold, it indicates that the vehicle has begun braking. Simultaneously, if the cumulative duration of the driving pressure change state exceeds the exit driving time threshold, it indicates that the vehicle has begun braking and the tire pressure has remained stable for a considerable period. At this time, the sensing data collected during the driving pressure change state can be sent to the terminal to monitor the vehicle's tire pressure. Simultaneously, the vehicle enters the exit driving pressure constant state, waking up at a fourth interval. During the driving pressure change state, the TPMS sensor wakes up at a sixth interval. The fourth interval can be longer than the sixth interval to reduce the TPMS sensor's power consumption. In one embodiment, the exit driving time threshold can be 64 seconds.

[0107] In one embodiment, the fourth interval may be 4 seconds and the sixth interval may be 1 second.

[0108] Step S543: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure constant state is greater than the driving stability time threshold, then the sensing data collected under the driving air pressure change state will be sent to the terminal, and the driving stability state will be entered to wake up according to the fifth interval duration.

[0109] When the tire pressure changes during driving, if the historical pressure difference value measured is less than the driving pressure difference threshold, it indicates that the tire pressure is still stable while the car is in motion. If the current driving speed is greater than the speed threshold, it indicates that the car is still in motion. At the same time, if the cumulative duration of the driving pressure-constant state is greater than the driving stability time threshold, it indicates that the car has exceeded the driving stability time threshold. At this time, the sensing data collected during the driving pressure change state can be sent to the terminal to monitor the tire pressure of the car. At the same time, the car enters the driving stability state and wakes up according to the fifth interval. During the driving pressure change state, the TPMS sensor wakes up according to the sixth interval. The fifth interval can be longer than the sixth interval, which can reduce the power consumption of the TPMS sensor.

[0110] Step S544: If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected under the driving air pressure change state will be sent to the terminal, and the system will control the system to re-enter the driving air pressure change state.

[0111] It is understandable that if the historical pressure difference value is greater than the driving pressure difference threshold, it indicates that the tire pressure fluctuates greatly when the car is driving. At this time, the sensing data collected during the driving pressure change state will be sent to the terminal to monitor the tire pressure and control the vehicle to re-enter the driving pressure change state.

[0112] In one embodiment, calculating the duration of entering the current running state to obtain the cumulative duration of the current running state includes steps S521 to S522.

[0113] Step S521: Calculate the duration of the driving air pressure change state to obtain the second pre-stored duration.

[0114] Step S522: If the historical pressure difference value is greater than the driving pressure difference threshold, the second pre-stored duration is reset to zero, and the reset second pre-stored duration is used as the cumulative duration of the driving air pressure change state.

[0115] It is understandable that, in order to determine whether the cumulative duration of maintaining the driving pressure change state is greater than the exit time threshold, the statistical duration of entering the driving pressure change state is used as the second pre-stored duration. When a historical pressure difference value is greater than the static pressure difference threshold, the second pre-stored duration is reset to zero, so that the cumulative duration of the driving pressure change state can be counted again, thereby improving the accuracy of tire pressure monitoring.

[0116] In one embodiment, the current operating state is a stable driving state. When the historical differential pressure value, the current driving speed, and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state will be sent to the terminal, and the corresponding specific operating state will be entered, including steps S641 to S643.

[0117] Step S641: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving stable state is greater than the fourth duration threshold, then the sensing data collected in the driving stable state will be sent to the terminal, and the system will control the system to re-enter the driving stable state.

[0118] It can be understood that the driving stability state means that the car maintains a driving state and the tire pressure is stable for a period of time. In the driving stability state, if the historical pressure difference value of the measured tire pressure is less than the driving pressure difference threshold, it means that the car tire pressure is still stable. At the same time, if the current driving speed is greater than the speed threshold and the cumulative duration of the driving stability state is greater than the fourth duration threshold, it means that the car has maintained a driving state for a period of time. At this time, the sensing data collected in the driving stability state will be sent to the terminal to realize the monitoring of the car tire pressure. At the same time, the control will be re-entering the driving stability state, and then continue to execute steps S110 to S140.

[0119] Step S642: If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected in the driving stable state will be sent to the terminal, and the driving air pressure change state will be entered to wake up according to the sixth interval.

[0120] Under normal driving conditions, if the historical pressure difference value is greater than the driving pressure difference threshold, it indicates that the tire pressure fluctuates greatly during driving. To ensure driving safety, the sensing data collected under normal driving conditions will be sent to the terminal to monitor the tire pressure. At the same time, the vehicle will enter the driving pressure change state and wake up according to the sixth interval. The sixth interval under the driving pressure change state can be shorter than the fifth interval under the driving stable state, thereby increasing the wake-up frequency and ensuring vehicle driving safety.

[0121] Step S643: If the historical pressure difference value of the tire pressure is less than the driving pressure difference threshold and the current driving speed is less than the speed threshold, the sensing data collected in the driving stable state will be sent to the terminal, and the vehicle will enter the exit driving pressure unchanged state to wake up according to the fourth interval.

[0122] It can be understood that the constant tire pressure state indicates that the vehicle is in motion and the tire pressure is stable. In this stable state, the vehicle may decelerate. If the historical tire pressure difference value is less than the driving pressure difference threshold, it indicates that the tire pressure remains stable while the vehicle is in motion. Simultaneously, if the current driving speed is less than the speed threshold, it indicates that the vehicle is beginning to brake. At this point, the sensing data collected in the stable driving state is sent to the terminal to monitor the tire pressure. The system then exits the constant tire pressure state and wakes up according to a fourth interval. The fourth interval when exiting the constant tire pressure state can be longer than the sixth interval when in the stable driving state to reduce TPMS sensor power consumption. In one embodiment, the fourth interval can be 4 seconds, and the sixth interval can be 2 seconds.

[0123] In one embodiment, the current operating state is the exit driving air pressure constant state. When the historical pressure difference value, the current driving speed and the cumulative duration of the current operating state all meet the corresponding transmission conditions, the sensing data collected in the current operating state will be sent to the terminal, and the corresponding specific operating state will be entered, including steps S741 to S744.

[0124] Step S741: If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected in the driving pressure constant state will be sent to the terminal, and the driving pressure change state will be entered to wake up according to the sixth interval.

[0125] In the case of exiting the driving pressure constant state, the TPMS sensor wakes up at the fourth interval. If the historical pressure difference value is greater than the driving pressure difference threshold when the driving pressure constant state is out of control, it indicates that the tire pressure fluctuates greatly when the car is in motion. In order to reduce the risk of driving, the sensing data collected in the driving pressure constant state can be sent to the terminal to monitor the tire pressure. At the same time, the driving pressure change state is entered, and the sensor wakes up at the sixth interval to ensure the safety of driving.

[0126] Step S742: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure constant state is less than the driving stability time threshold, then the sensing data collected in the exit driving air pressure constant state will be sent to the terminal, and the driving air pressure constant state will be entered to wake up according to the first interval duration.

[0127] When exiting the constant tire pressure state, if the historical tire pressure difference value is less than the driving pressure difference threshold, it indicates that the tire pressure is still stable while the car is in motion. If the current driving speed is greater than the speed threshold, it indicates that the car is still in motion. At the same time, if the cumulative duration of the constant tire pressure state is greater than the driving stability time threshold, it indicates that the car has exceeded the driving stability time threshold. At this time, the sensing data collected when exiting the constant tire pressure state can be sent to the terminal to monitor the tire pressure. Simultaneously, the car enters the constant tire pressure state again and is woken up according to the first interval. When exiting the constant tire pressure state, the TPMS sensor is woken up according to the fourth interval. The first interval can be less than the fourth interval to ensure driving safety.

[0128] Step S743: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure constant state is greater than the driving stabilization time threshold, then the sensing data collected when exiting the driving air pressure constant state will be sent to the terminal, and the driving stabilization state will be entered to wake up according to the fifth interval duration.

[0129] It is understood that, when exiting the constant tire pressure state, if the historical tire pressure difference value is less than the driving pressure difference threshold, it indicates that the tire pressure is still stable while the vehicle is in motion. If the current driving speed is greater than the speed threshold, it indicates that the vehicle is still in motion. Simultaneously, if the cumulative duration of the constant tire pressure state exceeds the driving stability time threshold, it indicates that the vehicle has exceeded the driving stability time threshold. At this point, the sensing data collected during the exit from the constant tire pressure state can be sent to the terminal to monitor the vehicle's tire pressure. Simultaneously, the vehicle enters a driving stability state and is woken up according to the fifth interval. Specifically, during the exit from the constant tire pressure state, the TPMS sensor wakes up according to the fourth interval. The fifth interval can be shorter than the fourth interval to ensure vehicle driving safety. In one embodiment, the fifth interval can be 2 seconds, and the fourth interval can be 4 seconds.

[0130] Step S744: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of exiting the driving pressure constant state is greater than the fifth duration threshold, then the sensing data collected in the exit driving pressure constant state will be sent to the terminal, and the stationary pressure constant state will be entered to wake up according to the second interval duration.

[0131] When exiting the constant tire pressure state, if the historical tire pressure difference value is less than the driving tire pressure difference threshold, it indicates that the vehicle tire pressure is stable. If the current driving speed is less than the speed threshold, and the cumulative duration of exiting the constant tire pressure state is greater than the fifth duration threshold, it indicates that the vehicle has been braking for a period of time. At this time, the sensing data collected during the exit from the constant tire pressure state can be sent to the terminal to monitor the vehicle tire pressure. Simultaneously, the vehicle enters a stationary constant tire pressure state and is awakened according to the second interval. During the exit from the constant tire pressure state, the TPMS sensor is awakened according to the fourth interval. The second interval can be longer than the fourth interval to reduce the power consumption of the TPMS sensor. In one embodiment, the second interval can be 16 seconds, and the fourth interval can be 4 seconds. In another embodiment, the fifth duration threshold can be 60 seconds.

[0132] In one embodiment, the tire pressure monitoring method may further include steps S810 to S830.

[0133] Step S810: Determine whether the device is in storage mode; if in storage mode, wake it up according to the seventh interval.

[0134] When the TPMS sensor is not installed, it can be set to storage mode. In storage mode, the TPMS sensor can be woken up at a seventh interval with extremely low power consumption. The seventh interval is longer than the first, second, third, fourth, fifth, and sixth intervals. In one embodiment, the seventh interval can be set to 60 seconds.

[0135] Step S820: If the vehicle is in storage mode, obtain the initial tire pressure value collected in storage mode.

[0136] It is understandable that the TPMS sensor will collect the tire pressure value of the car tires every time it is woken up. If it is in storage mode, the collected tire pressure value will be used as the initial tire pressure value.

[0137] In step S830, if the initial tire pressure value is greater than the assembled tire pressure value, the sensing data collected in the storage state will be sent to the terminal and the static air pressure change state will be entered to wake up according to the third interval.

[0138] It is understood that the assembled tire pressure value can be the tire pressure value of the tires when the car leaves the factory, for example, 69 kPa; if the initial tire pressure value is greater than the assembled tire pressure value, it indicates that the tire pressure has changed. At this time, the sensing data collected in the storage state will be sent to the terminal to realize tire pressure monitoring, and at the same time, it will enter the static air pressure change state to wake up according to the third interval. Among them, setting the third interval to be less than the seventh interval can increase the wake-up collection frequency of the TPMS sensor, thereby ensuring the tire pressure safety of the car.

[0139] Figure 3 This is a flowchart illustrating another embodiment of a tire pressure monitoring method, which is applied to a TPMS sensor, such as... Figure 3 As shown.

[0140] Specifically, the system first determines whether it is in a storage state, where it will wake up at the seventh interval. If it is in a storage state, the initial tire pressure value collected in that state is obtained; otherwise, the system continues to determine whether it is in a storage state. After obtaining the initial tire pressure value, it is determined whether the initial tire pressure value is greater than the assembled tire pressure value. If the result is yes, the sensing data collected in the storage state is sent to the terminal, and the system enters a static pressure change state, waking up at the third interval. Otherwise, the system returns to the step of obtaining the initial tire pressure value collected in the storage state.

[0141] When in a static pressure change state, the system acquires the tire pressure value and current driving speed under this state, and calculates the duration of the static pressure change state to obtain the cumulative duration. It also acquires the historical pressure difference value and then evaluates the historical pressure difference value, current driving speed, and cumulative duration under the static pressure change state. If the historical pressure difference value is less than the static pressure difference threshold and the current driving speed is greater than the speed threshold, the system sends the sensor data acquired under the static pressure change state to the terminal and enters a constant driving pressure state, waking up at a first interval. If the historical pressure difference value is less than the static pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the static pressure change state is greater than the first duration threshold, the system enters a constant static pressure state and wakes up at a second interval, where the second interval is greater than the first interval. If the historical pressure difference value is greater than the static pressure difference threshold, the system sends the sensor data acquired under the static pressure change state to the terminal, resets the cumulative duration of the static pressure change state to zero, and controls the system to re-enter the static pressure change state.

[0142] When in a static constant pressure state, the system acquires the tire pressure value and current driving speed under this state, and calculates the duration of the static constant pressure state to obtain the cumulative duration. It also acquires the historical pressure difference value and then evaluates the historical pressure difference value, current driving speed, and cumulative duration under the static constant pressure state. If the historical pressure difference value is less than the static pressure difference threshold and the current driving speed is greater than the speed threshold, the system sends the sensor data acquired under the static constant pressure state to the terminal and enters a driving constant pressure state, waking up at a first interval. If the historical pressure difference value is less than the static pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the static constant pressure state is greater than a second duration threshold, the system sends the sensor data acquired under the static constant pressure state to the terminal and controls the system to re-enter the static constant pressure state. If the historical pressure difference value is greater than the static pressure difference threshold, the system sends the sensor data acquired under the static constant pressure state to the terminal and enters a static pressure change state, waking up at a third interval.

[0143] When the tire pressure remains constant during driving, the system acquires the tire pressure value and current driving speed under this condition, as well as the duration of driving under this condition to obtain the cumulative duration of driving under this condition. The system also acquires the historical pressure difference value of the tire pressure and then makes a judgment based on the historical pressure difference value, current driving speed, and cumulative duration under the condition of driving under constant tire pressure. If the historical pressure difference value is less than the driving pressure difference threshold and the current driving speed is less than the speed threshold, the sensing data collected under the constant driving pressure state will be sent to the terminal, and the system will exit the constant driving pressure state to wake up according to the fourth interval duration. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the constant driving pressure state is greater than the driving stabilization time threshold, the sensing data collected under the constant driving pressure state will be sent to the terminal, and the system will enter the driving stabilization state to wake up according to the fifth interval duration. If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected under the constant driving pressure state will be sent to the terminal, and the system will enter the driving pressure change state to wake up according to the sixth interval duration. The fourth, fifth, and sixth interval durations decrease sequentially.

[0144] When the vehicle is in a state of changing tire pressure, the system acquires the tire pressure value and current driving speed under this state, as well as the duration of the vehicle in the state of changing tire pressure to obtain the cumulative duration of the state of changing tire pressure. The system also acquires the historical pressure difference value of the tire pressure value and then makes a judgment based on the historical pressure difference value, current driving speed, and cumulative duration under the state of changing tire pressure. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving pressure constant state is less than the driving stability time threshold, then the sensing data collected in the driving pressure change state will be sent to the terminal, and the driving pressure constant state will be entered to wake up according to the first interval. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the driving pressure change state is greater than the exit driving time threshold, then the sensing data collected in the driving pressure change state will be sent to the terminal, and the exit driving pressure constant state will be entered to wake up according to the fourth interval. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving pressure constant state is greater than the driving stability time threshold, then the sensing data collected in the driving pressure change state will be sent to the terminal, and the driving stability state will be entered to wake up according to the fifth interval. If the historical pressure difference value is greater than the driving pressure difference threshold, then the sensing data collected in the driving pressure change state will be sent to the terminal, the cumulative duration of the driving pressure change state will be reset to zero, and the system will control the system to re-enter the driving pressure change state.

[0145] When in a stable driving state, the system acquires the tire pressure value and current driving speed, and calculates the duration of the stable driving state to obtain the cumulative duration. It also acquires the historical tire pressure difference value and then evaluates the historical pressure difference value, current driving speed, and cumulative duration. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the stable driving state is greater than the fourth duration threshold, the system sends the sensor data acquired in the stable driving state to the terminal and controls the system to re-enter the stable driving state. If the historical pressure difference value is greater than the driving pressure difference threshold, the system sends the sensor data acquired in the stable driving state to the terminal and enters a driving tire pressure change state, waking up according to the sixth interval duration. If the historical tire pressure difference value is less than the driving pressure difference threshold and the current driving speed is less than the speed threshold, the system sends the sensor data acquired in the stable driving state to the terminal and enters an exit driving tire pressure constant state, waking up according to the fourth interval duration.

[0146] When in the state of constant tire pressure after exiting driving, the system acquires the tire pressure value and current driving speed under this state, as well as the duration of the period in the state of constant tire pressure after exiting driving, to obtain the cumulative duration of the state of constant tire pressure after exiting driving, and obtains the historical pressure difference value of the tire pressure value. Then, the system makes a judgment based on the historical pressure difference value, current driving speed, and cumulative duration under the state of constant tire pressure after exiting driving. If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected in the constant driving pressure state will be sent to the terminal, and the system will enter the driving pressure change state to wake up according to the sixth interval. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the constant driving pressure state is less than the driving stabilization time threshold, the sensing data collected in the constant driving pressure state will be sent to the terminal, and the system will enter the constant driving pressure state to wake up according to the first interval. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the constant driving pressure state is greater than the driving stabilization time threshold, the sensing data collected in the constant driving pressure state will be sent to the terminal, and the system will enter the driving stabilization state to wake up according to the fifth interval. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the constant driving pressure state is greater than the fifth duration threshold, the sensing data collected in the constant driving pressure state will be sent to the terminal, and the system will enter the static constant pressure state to wake up according to the second interval.

[0147] It should be understood that, although the above Figure 1 , Figure 2 , Figure 3 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the exact order indicated by the arrows or numbers. Unless otherwise specified in this document, there is no strict order in which these steps are performed; they can be executed in other orders. Figure 1 , Figure 2 , Figure 3 At least some of the steps in the process may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but may be executed at different times. The execution order of these steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least some of the steps or stages in other steps.

[0148] This invention also relates to a tire pressure monitoring device, which can be a software module, a hardware module, or a combination of both as part of a computer device. Specifically, the device includes a determination module, a timing module, an acquisition module, and a control module. The determination module determines the current operating state; the timing module counts the duration of the current operating state to obtain the cumulative duration of the current operating state; the acquisition module acquires the tire pressure value and current driving speed collected in the current operating state, and acquires the historical pressure difference value of the tire pressure; the control module, based on the current operating state, sends the sensing data collected in the current operating state to the terminal according to the historical pressure difference value, current driving speed, and the cumulative duration of the current operating state, and enters a specific operating state to wake up at specific intervals.

[0149] For specific limitations regarding the tire pressure monitoring device, please refer to the limitations on the tire pressure monitoring method above, which will not be repeated here. Each module in the aforementioned tire pressure monitoring device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0150] The present invention also relates to a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of any of the above-described tire pressure monitoring methods.

[0151] In one embodiment, a TPMS sensor is provided, which is used to implement the steps of the above-described method embodiments. In another embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the steps of the above-described method embodiments.

[0152] In one embodiment, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, causing the computer device to perform the steps in the above method embodiments.

[0153] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes described in the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0154] The above description is only a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural changes made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A tire pressure monitoring method, characterized in that, Applied to TPMS sensors, the method includes: Determine the current running status; The duration of entering the current running state is counted to obtain the cumulative duration of the current running state; Obtain the tire pressure value and current driving speed collected under the current operating state, and obtain the historical pressure difference value of the tire pressure value; Based on the current operating state, when it is determined that the condition is met, the sensing data collected in the current operating state is sent to the terminal, and the corresponding specific operating state is entered. The TPMS sensor is then woken up according to the specific interval time corresponding to the specific operating state, and sensing data in the specific operating state is collected. The condition for meeting the condition is determined by determining that the historical differential pressure value meets the corresponding differential pressure condition, or by first determining that the historical differential pressure value meets the corresponding differential pressure condition and then determining that the current driving speed meets the corresponding speed condition, or by first determining that the historical differential pressure value meets the corresponding differential pressure condition, then determining that the current driving speed meets the corresponding speed condition, and then determining that the cumulative duration of the current operating state meets the corresponding duration condition. When the current operating state is a static air pressure change state; When the condition is met, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including: If the historical pressure difference value is less than the static pressure difference threshold and the current driving speed is greater than the speed threshold, the sensing data collected under the static air pressure change state will be sent to the terminal, and the driving air pressure will remain unchanged, so as to wake up the TPMS sensor according to the first interval. If the historical pressure difference value is less than the static pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the static air pressure change state is greater than the first duration threshold, then the sensing data collected under the static air pressure change state will be sent to the terminal, and the static air pressure will remain unchanged to wake up the TPMS sensor according to the second interval duration; the second interval duration is greater than the first interval duration. If the historical pressure difference value is greater than the static pressure difference threshold, the sensing data collected under the static pressure change state will be sent to the terminal, and the system will control the system to re-enter the static pressure change state.

2. The tire pressure monitoring method according to claim 1, characterized in that, The process of calculating the duration of time spent in the current running state to obtain the cumulative duration of the current running state includes: The duration of entering the static pressure change state is counted to obtain the first pre-stored duration; If the historical pressure difference value is greater than the static pressure difference threshold, the first pre-stored duration is reset to zero, and the first pre-stored duration after being reset to zero is used as the cumulative duration of the static pressure change state.

3. The tire pressure monitoring method according to claim 1, characterized in that, When the current operating state is the static air pressure constant state; When the condition is met, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including: If the historical pressure difference value is less than the static pressure difference threshold and the current driving speed is greater than the speed threshold, the sensing data collected under the static air pressure constant state will be sent to the terminal, and the driving air pressure constant state will be entered to wake up the TPMS sensor according to the first interval. If the historical pressure difference value is less than the static pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the static pressure constant state is greater than the second duration threshold, then the sensing data collected in the static pressure constant state will be sent to the terminal, and the system will control the system to re-enter the static pressure constant state. If the historical pressure difference value is greater than the static pressure difference threshold, the sensing data collected under the static pressure constant state will be sent to the terminal, and the static pressure change state will be entered to wake up the TPMS sensor according to the third interval.

4. The tire pressure monitoring method according to claim 1, characterized in that, When the current operating state is a state where the driving air pressure remains unchanged; When the condition is met, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including: If the historical pressure difference value is less than the driving pressure difference threshold and the current driving speed is less than the speed threshold, the sensing data collected under the driving air pressure constant state will be sent to the terminal, and the driving air pressure constant state will be exited to wake up the TPMS sensor according to the fourth interval. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure constant state is greater than the driving stabilization time threshold, then the sensing data collected in the driving air pressure constant state will be sent to the terminal, and the driving stabilization state will be entered to wake up the TPMS sensor according to the fifth interval duration. If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected under the driving air pressure constant state will be sent to the terminal, and the driving air pressure change state will be entered to wake up the TPMS sensor according to the sixth interval. The durations of the fourth, fifth, and sixth intervals decrease sequentially.

5. The tire pressure monitoring method according to claim 1, characterized in that, When the current operating state is a state of changing air pressure during operation; When the condition is met, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure change state is less than the driving stability time threshold, then the sensing data collected under the driving air pressure change state will be sent to the terminal, and the driving air pressure will enter the constant state, so as to wake up the TPMS sensor according to the first interval duration. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the driving air pressure change state is greater than the third duration threshold, then the sensing data collected under the driving air pressure change state will be sent to the terminal, and the driving air pressure will be exited in the constant state to wake up the TPMS sensor according to the fourth interval duration. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving air pressure change state is greater than the driving stability time threshold, then the sensing data collected under the driving air pressure change state will be sent to the terminal, and the driving stability state will be entered to wake up the TPMS sensor according to the fifth interval duration. If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected under the driving air pressure change state will be sent to the terminal, and the system will control the system to re-enter the driving air pressure change state.

6. The tire pressure monitoring method according to claim 5, characterized in that, The process of calculating the duration of time spent in the current running state to obtain the cumulative duration of the current running state includes: The duration of entering the aforementioned driving air pressure change state is counted to obtain the second pre-stored duration; If the historical pressure difference value is greater than the driving pressure difference threshold, the second pre-stored duration is reset to zero, and the reset second pre-stored duration is used as the cumulative duration of the driving air pressure change state.

7. The tire pressure monitoring method according to claim 1, characterized in that, When the current operating state is a stable driving state, when the condition is met, the sensing data collected in the current operating state is sent to the terminal, and the corresponding specific operating state is entered, including: If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of the driving stability state is greater than the fourth duration threshold, then the sensing data collected in the driving stability state will be sent to the terminal, and the system will control the system to re-enter the driving stability state. If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected under the driving stable state will be sent to the terminal, and the driving air pressure change state will be entered to wake up the TPMS sensor according to the sixth interval. If the historical pressure difference value is less than the driving pressure difference threshold and the current driving speed is less than the speed threshold, the sensing data collected in the driving stable state will be sent to the terminal, and the system will enter the exit driving pressure unchanged state to wake up the TPMS sensor according to the fourth interval.

8. The tire pressure monitoring method according to claim 1, characterized in that, When the current operating state is an exit from the constant air pressure state, the step of determining that the condition is met will send the sensing data collected in the current operating state to the terminal and enter the corresponding specific operating state, including: If the historical pressure difference value is greater than the driving pressure difference threshold, the sensing data collected in the state of exiting the driving air pressure unchanged will be sent to the terminal, and the driving air pressure change state will be entered to wake up the TPMS sensor according to the sixth interval. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of exiting the driving pressure constant state is less than the driving stability time threshold, then the sensing data collected in the driving pressure constant state will be sent to the terminal, and the driving pressure constant state will be entered to wake up the TPMS sensor according to the first interval duration. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is greater than the speed threshold, and the cumulative duration of exiting the driving pressure constant state is greater than the driving stabilization time threshold, then the sensing data collected in the driving pressure constant state will be sent to the terminal, and the driving stabilization state will be entered to wake up the TPMS sensor according to the fifth interval duration. If the historical pressure difference value is less than the driving pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of exiting the driving pressure constant state is greater than the fifth duration threshold, then the sensing data collected in the driving pressure constant state will be sent to the terminal, and the stationary pressure constant state will be entered to wake up the TPMS sensor according to the second interval duration.

9. A tire pressure monitoring device, characterized in that, The device includes: The determination module is used to determine the current running status; The timing module counts the duration of the current running state to obtain the cumulative duration of the current running state; The acquisition module is used to acquire the tire pressure value and current driving speed collected under the current operating state, and to acquire the historical pressure difference value of the tire pressure value; The control module is used to, based on the current operating state, send the sensing data collected in the current operating state to the terminal when it is determined that a condition is met, and enter the corresponding specific operating state to wake up the TPMS sensor according to a specific interval duration corresponding to the specific operating state, and collect the sensing data in the specific operating state; the determination that the condition is met is to determine that the historical differential pressure value meets the corresponding differential pressure condition, or first determine that the historical differential pressure value meets the corresponding differential pressure condition, and then determine that the current driving speed meets the corresponding speed condition, or first determine that the historical differential pressure value meets the corresponding differential pressure condition, then determine that the current driving speed meets the corresponding speed condition, and then determine that the cumulative duration of the current operating state meets the corresponding duration condition; When the current operating state is a static air pressure change state; When the condition is met, the sensing data collected in the current operating state is sent to the terminal, and the system enters the corresponding specific operating state, including: If the historical pressure difference value is less than the static pressure difference threshold and the current driving speed is greater than the speed threshold, the sensing data collected under the static air pressure change state will be sent to the terminal, and the driving air pressure will remain unchanged, so as to wake up the TPMS sensor according to the first interval. If the historical pressure difference value is less than the static pressure difference threshold, the current driving speed is less than the speed threshold, and the cumulative duration of the static air pressure change state is greater than the first duration threshold, then the sensing data collected under the static air pressure change state will be sent to the terminal, and the static air pressure will remain unchanged to wake up the TPMS sensor according to the second interval duration; the second interval duration is greater than the first interval duration. If the historical pressure difference value is greater than the static pressure difference threshold, the sensing data collected under the static pressure change state will be sent to the terminal, and the system will control the system to re-enter the static pressure change state.

10. A TPMS sensor, characterized in that, The TPMS sensor is used to implement the steps of the method according to any one of claims 1 to 8.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

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