Tire pressure monitoring device and tire pressure monitoring system

Abstract

The invention discloses a tire pressure monitoring device and a tire pressure monitoring system. The tire pressure monitoring device comprises a microprocessor, a timer, an electricity storage device and a plurality of sensors, the sensors further comprise a pressure sensor for collecting the tire pressure, an acceleration sensor for collecting the tire acceleration and a temperature sensor for collecting the tire temperature. The microprocessor is provided with at least three different vehicle condition modes, and in each vehicle condition mode, the started sensors are not completely the same, the data acquisition frequencies of the sensors are not completely the same, and the executed alarm detection is not completely the same. And when the alarm detection result is true, triggering to execute a corresponding alarm mode, and sending an alarm data packet in different broadcast modes through BLE Bluetooth broadcast. According to the system, the microprocessor and various sensors are integrated, so that the tire state is comprehensively monitored. According to a vehicle condition mode, tire data are collected at different frequencies, alarm detection is executed, and an alarm is given out through BLE under an abnormal condition, so that electric power is effectively saved, and the service time of the tire pressure monitoring device is prolonged.

Description

Technical Field

[0001] The present application relates to the field of monitoring systems, and in particular to a tire pressure monitoring device and system. Background Art

[0002] With the development of the automobile industry and the improvement of society's requirements for traffic safety, the safety and stability of vehicles have become the focus of increasing attention. Among them, the tire is the only part of the vehicle that contacts the ground, and its status has a vital impact on the driving safety of the vehicle. Tire pressure (air pressure in the tire) is an important indicator of tire status, and its abnormal conditions (such as low or high tire pressure) are often a major cause of vehicle accidents. Therefore, real-time monitoring of tire pressure and timely informing the driver of the tire pressure status has become an important means to ensure driving safety.

[0003] There are many types of tire pressure monitoring systems on the market, which can be roughly divided into two categories: direct tire pressure monitoring system and indirect tire pressure monitoring system. The direct tire pressure monitoring system directly measures the tire pressure through the sensor in the tire and sends the data to the on-board display device to show it to the driver; while the indirect tire pressure monitoring system infers the change of tire pressure by monitoring the difference in tire speed. Compared with the indirect tire pressure monitoring system, the direct tire pressure monitoring system can provide more accurate and instant tire pressure, so it is becoming more and more popular in the market.

[0004] In the prior art, patent number CN202410667098.X discloses a tire status intelligent monitoring system and method. The monitoring system includes a tire internal information acquisition module, a communication module, a data receiving and processing module, and a terminal display platform. The tire internal information acquisition module includes a tire temperature sensor, a tire pressure sensor, an acceleration sensor, and a cable. The communication module includes a single-chip microcomputer and a wireless transmission module. The data receiving and processing module includes a data acquisition board and a 4G DTU module. The tire temperature sensor, the tire pressure sensor, and the acceleration sensor are connected to the single-chip microcomputer through the cable respectively. The single-chip microcomputer transmits data to the data acquisition board through the wireless transmission module. The 4GDTU module is connected to the data acquisition board, and the data acquisition board is connected to the terminal display platform through the 4G DTU module.

[0005] In the prior art, Patent No. CN202410749553.0 discloses a Bluetooth tire pressure monitoring and anti-theft system and method based on AI model reasoning. The system includes: a tire pressure monitor, an on-board edge computing center and a cloud platform that are communicatively connected in sequence; the tire pressure monitor collects monitoring data of the target tire; the on-board edge computing center performs on-board AI model reasoning and matching on the received monitoring data, and uploads the inferred on-board matching results to the cloud platform; if there is no matching result in the on-board AI model reasoning, the monitoring data is uploaded to the cloud platform; the cloud platform pushes the received on-board matching results to the user terminal for display or alarm; or, performs cloud-based AI model reasoning on the monitoring data, and pushes the inferred cloud-based matching results to the user terminal for display or alarm.

[0006] In the prior art, patent number CN202410499989.9 discloses a tire pressure monitoring method, device, Internet of Vehicles device Tbox and storage medium. The method includes: using a Tbox with Bluetooth function to receive tire pressure detection data sent by a Bluetooth sensor, without the need to set up a separate Bluetooth receiver to receive tire pressure monitoring data sent by the Bluetooth sensor, thereby reducing the hardware cost for realizing the tire pressure monitoring function; specifically, when the speed of the target vehicle is greater than a set threshold, if the tire pressure monitoring data sent by the Bluetooth sensor on the target vehicle is received within a preset time, the tire pressure monitoring process is awakened; and through the tire pressure monitoring process, the tire pressure monitoring result of the target vehicle is determined according to the tire pressure monitoring data.

[0007] In the prior art, patent number CN202311845699.7 discloses a tire pressure monitoring system and a calibration method for a BLE tire pressure sensor. The tire pressure monitoring system includes: a BLE master node; a BLE tire pressure sensor, which is arranged on the wheel and used to collect the status information of the corresponding tire and send it to the BLE master node; a BLE positioning anchor point, which is installed on the body of the vehicle and connected to the vehicle network through a physical connection. The BLE positioning anchor point sends its own ID identification and the scanned RSSI data of the BLE tire pressure sensor to the BLE master node through the vehicle network. The BLE master node calibrates the position of the tire where the BLE tire pressure sensor is located based on the ID identification and RSSI data of the BLE positioning anchor point.

[0008] However, existing direct tire pressure monitoring systems still have some technical limitations. For example, traditional direct tire pressure monitoring systems usually use low-frequency RF (radio frequency) or high-frequency RF technology to transmit data, which has certain shortcomings in transmission distance and data stability, and the power consumption is extremely serious, and the batteries of the monitoring devices set in the tires must be replaced frequently. At the same time, many tire pressure monitoring devices can only monitor tire pressure, but cannot comprehensively consider other factors that may affect vehicle safety, such as tire temperature and vehicle speed. In addition, the existing tire pressure monitoring system also needs to be improved in terms of vehicle mode switching (such as from driving mode to parking mode) and the response speed and flexibility in emergency situations. Summary of the invention

[0009] In order to overcome the shortcomings of the prior art, the present application proposes a tire pressure monitoring device and a tire pressure monitoring system. The tire pressure monitoring device can accurately and stably monitor tire pressure and collect tire temperature and vehicle acceleration data by integrating a microprocessor, a variety of sensors (including pressure sensors, temperature sensors, acceleration sensors, power sensors) and a low-power Bluetooth (BLE) communication module, thereby achieving more comprehensive tire status monitoring. At the same time, by triggering alarm detection according to a variety of vehicle condition modes, flexibly switching vehicle condition modes according to real-time tire data, and issuing an alarm through BLE in abnormal situations, the safety of vehicle driving is significantly improved, and the power consumption of the tire pressure monitoring device can be effectively reduced, extending its service life.

[0010] In a first aspect, the present application proposes a tire pressure monitoring device 200 for use in a tire pressure monitoring system. The tire pressure monitoring system includes a main control module 800 and multiple tire pressure monitoring devices 200. The main control module 800 is arranged on the main console of the vehicle, and the tire pressure monitoring devices 200 are arranged on the tires of the vehicle.

[0011] The tire pressure monitoring device 200 is provided with a first BLE device 210 , and the main control module 800 is provided with a second BLE device 810 . The first BLE device 210 and the second BLE device 810 form a first Bluetooth binding relationship 410 .

[0012] The tire pressure monitoring device 200 includes a microprocessor 201, a timer 260, a power storage device 250 for providing power for the operation of the tire pressure monitoring device 200, and a plurality of sensors. The sensors include a pressure sensor 220 for collecting tire pressure, an acceleration sensor 230 for collecting tire acceleration, and a temperature sensor 240 for collecting tire temperature.

[0013] The microprocessor 201 is provided with at least three different vehicle condition modes 120. In each vehicle condition mode, the enabled sensors are not exactly the same, the frequency of sensor data collection is not exactly the same, and the performed alarm detection is not exactly the same; when the result of the alarm detection is true, the corresponding alarm mode is triggered to be executed, and a warning data packet is sent to the main control module 800 via Bluetooth broadcast based on the first Bluetooth binding relationship 410.

[0014] In a preferred embodiment, the three different vehicle condition modes 120 include a storage mode 121, a parking mode 122, and a driving mode 123. The alarm detection 140 includes: Bluetooth unbound detection, fast air leakage detection, slow air leakage detection, ultra-slow air leakage detection, and temperature detection. The alarm mode 130 includes: inflation alarm, Bluetooth unbound alarm, flat alarm, low tire pressure alarm, fast air leakage alarm, slow air leakage alarm, ultra-slow air leakage alarm, and temperature alarm.

[0015] The storage mode 121 includes the following steps: 701: Collect tire pressure and tire temperature at first intervals and for a first duration.

[0016] 702 : When the tire pressure is less than the first pressure threshold, the storage mode 121 is maintained.

[0017] 703: When the tire pressure reaches the first pressure threshold, the inflation alarm is triggered and the vehicle switches to the parking mode 122.

[0018] Parking mode 122 includes the following steps: 704: Execute Bluetooth unbinding detection. If the result is true, trigger the execution of Bluetooth unbinding alarm.

[0019] 705: Start the first timing. When the first timing is less than the third time of 10 minutes, collect acceleration every 36 seconds of the fourth time to generate the vehicle speed. When the first timing is equal to or greater than the third time of 10 minutes, collect acceleration every 10 minutes of the fifth time to generate the vehicle speed.

[0020] 706: Collect tire pressure and tire temperature at second intervals.

[0021] 707: When the tire pressure is less than the first pressure threshold, a flat tire alarm is triggered.

[0022] 708: When the tire pressure is greater than the first pressure threshold and less than the second pressure threshold, a low tire pressure alarm is triggered.

[0023] 709: Execute a quick air leak test. If the result is true, trigger a quick air leak alarm.

[0024] 710: Execute slow air leakage detection. If the result is true, trigger the execution of slow air leakage alarm.

[0025] 711: Execute ultra-slow air leakage detection. If the result is true, trigger the ultra-slow air leakage alarm.

[0026] 712: Perform temperature detection based on tire temperature. If the result is true, trigger the temperature alarm.

[0027] 713: When the tire pressure is less than the first pressure threshold and the vehicle speed is lower than the speed threshold, switch to storage mode 121.

[0028] 714: When the tire pressure reaches the second pressure threshold and the vehicle speed reaches the speed threshold, switch to driving mode 123.

[0029] Driving mode 123 includes the following steps: 704: Execute Bluetooth unbinding detection. If the result is true, trigger the execution of Bluetooth unbinding alarm.

[0030] 706: Collect tire pressure and tire temperature at second intervals.

[0031] 715: Generate vehicle speed every fourth time period.

[0032] 707: When the tire pressure is less than the first pressure threshold, a flat tire alarm is triggered.

[0033] 708: When the tire pressure is greater than the first pressure threshold and less than the second pressure threshold, a low tire pressure alarm is triggered.

[0034] 709: Execute a quick air leak test. If the result is true, trigger a quick air leak alarm.

[0035] 710: Execute slow air leakage detection. If the result is true, trigger the execution of slow air leakage alarm.

[0036] 711: Execute ultra-slow air leakage detection. If the result is true, trigger the ultra-slow air leakage alarm.

[0037] 712: Execute temperature detection. If the result is true, trigger the execution temperature alarm.

[0038] 716: When the vehicle speed is lower than the speed threshold, switch to parking mode 122.

[0039] In the alarm detection 140, the Bluetooth unbinding detection is to detect whether the data transmission between the tire pressure monitoring device 200 and the main control module 800 is abnormal based on the first Bluetooth binding relationship 410. The fast air leakage detection is to detect whether the current tire pressure is less than the previous tire pressure and reaches the first pressure difference threshold. The slow air leakage detection is to detect whether the current tire pressure is less than the tire pressure 5 minutes ago and reaches the second pressure difference threshold. The ultra-slow air leakage detection is to detect whether the current tire pressure is less than the tire pressure 2 hours ago and reaches the third pressure difference threshold. The temperature detection is to detect whether the difference between the current tire temperature and the previous tire temperature reaches the temperature threshold.

[0040] In the alarm mode 130, the inflation alarm sends a warning data packet in the first broadcast mode, the Bluetooth unbound alarm sends a warning data packet in the second broadcast mode, the flat alarm sends a warning data packet in the third broadcast mode, the low tire pressure alarm sends a low warning data packet in the fourth broadcast mode, the fast air leakage alarm sends a warning data packet in the fifth broadcast mode, the slow air leakage alarm sends a warning data packet in the sixth broadcast mode, the super slow air leakage alarm sends a warning data packet in the seventh broadcast mode, and the temperature alarm sends a warning data packet in the eighth broadcast mode. The first broadcast mode to the eighth broadcast mode are different from each other.

[0041] In a second aspect, the present application proposes a tire pressure monitoring system, comprising a main control module 800, a plurality of tire pressure monitoring devices 200 and at least one user module 300, wherein the main control module 800 is arranged at a main console of a vehicle, each tire pressure monitoring device 200 is arranged at each tire of the vehicle, and the user module 300 is arranged at a mobile terminal. The tire pressure monitoring device 200 is the tire pressure monitoring device 200 proposed in the first aspect.

[0042] The main control module 800 is provided with a second BLE device 810, which forms a first Bluetooth binding relationship 410 with the first BLE device 210 of the tire pressure monitoring device 200. The user module 300 is provided with a third BLE device 310, which forms a second Bluetooth binding relationship 420 with the second BLE device 810. After the main control module 800 receives the alarm information broadcasted by the tire pressure monitoring device 200 based on the first Bluetooth binding relationship 410, it broadcasts the alarm information to the user module 300 based on the second Bluetooth binding relationship 420.

[0043] This application has the following beneficial effects: (1) Multi-parameter monitoring and analysis: The tire pressure monitoring device of the present application integrates a microprocessor, a tire pressure sensor, a temperature sensor, an acceleration sensor and a power sensor, and can collect tire pressure, tire temperature and vehicle acceleration data in real time, and generate vehicle speed through acceleration data. This multi-parameter monitoring method enables the main control module of the tire pressure monitoring system to fully understand the operating status of the tire, and by combining tire pressure, temperature and speed information, it can more accurately judge the safety of the tire. The tire pressure monitoring device also conducts a comprehensive analysis based on the tire pressure, tire temperature, vehicle speed and time to determine the vehicle condition mode, thereby adjusting the data collection frequency of the sensor. The sensor data collection frequency and wireless communication alarm frequency of different vehicle condition modes are different, so that the power consumption of the tire pressure monitoring device and tire safety monitoring are balanced. The tire pressure monitoring device can also trigger the execution of the alarm mode in a timely manner according to the tire alarm detection situation. This comprehensive analysis capability significantly improves the accuracy and reliability of the system.

[0044] (2) Application of low-power Bluetooth BLE communication technology: Most traditional tire pressure monitoring systems rely on RF communication technology. This RF technology has certain limitations in terms of transmission distance and data stability, and is power-consuming. Most of the power of the monitoring device installed in the tire is consumed in RF communication. In recent years, some tire pressure monitoring systems have begun to adopt low-power Bluetooth BLE technology. After binding the tire pressure monitoring device with the main control module of the central console through Bluetooth, data broadcasting and transmission are performed. In theory, it has the advantages of low power consumption and high reliability. However, whether it is traditional RF technology or BLE technology, the maximum power consumption is when data is transmitted wirelessly. Whether it is RF technology or BLE technology, the tire pressure monitoring system of the prior art transmits data after the sensor collects data, which is very power-consuming. The sensor of the present application does not transmit data immediately after collecting data. The tire pressure monitoring device is planned to set up a variety of alarm detection. BLE data transmission is performed only when the alarm detection result is true, that is, an abnormality is found and the alarm mode is triggered. This reduces power consumption to the greatest extent possible, effectively prolongs the service life of the tire pressure monitoring device, and reduces the frequency of battery replacement.

[0045] (3) Intelligent switching and flexible response of multiple vehicle condition modes: The tire pressure monitoring device of the present application sets multiple vehicle condition modes according to different vehicle conditions, including storage mode, parking mode, and driving mode. In different vehicle condition modes, the tire pressure monitoring device adjusts the frequency and type of data collection accordingly. For example, in storage mode, the tire pressure monitoring device collects tire pressure at a longer time interval, but does not need to collect tire temperature and acceleration data to reduce energy consumption; in driving mode, tire pressure, tire temperature and acceleration data are collected at a shorter time interval to ensure the real-time nature of the data.

[0046] (4) Low energy consumption design: Since the tire pressure monitoring device needs to run for a long time, how to reduce energy consumption is an important design consideration. This application effectively reduces the energy consumption of the system and improves the endurance of the tire pressure monitoring device through reasonable hardware integration design, the use of BLE communication modules, and adjustment of the data collection frequency of the sensor under different vehicle conditions. This low energy consumption architecture ensures that the tire pressure monitoring device can maintain stable and efficient performance during long-term operation, reduces the frequency of battery replacement of the tire pressure monitoring device, and improves the user experience.

[0047] (5) High user interactivity and convenience: BLE technology supports point-to-multipoint communication mode. This application uses BLE technology to enable the main control module to exchange data with multiple tire pressure monitoring devices on the one hand, and to transmit and interact information with user modules installed on mobile terminals (such as smartphones or tablets) on the other hand, thereby improving the efficiency and response speed of the tire pressure monitoring system. Users can view data such as tire pressure, temperature, speed and power through a dedicated application, and receive immediate notification when the main control module issues an alarm. This design not only improves the user experience, but also enhances the convenience of using the system. At the same time, when the tire pressure monitoring device detects an abnormal situation (such as abnormal tire pressure or increased tire temperature) through alarm detection, it will immediately trigger the execution of the alarm mode and broadcast an alarm message to the main control module through BLE to remind users, including but not limited to drivers, crew members or safety officers, to take corresponding safety measures. This system architecture can ensure safety and improve the overall performance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a schematic diagram of the structure of an embodiment of the tire pressure monitoring device proposed in this application; Figure 2 This is an embodiment of the tire pressure monitoring device proposed in the present application, wherein a schematic diagram of the operation flow of the storage mode in the vehicle condition mode; Figure 3 is an embodiment of the tire pressure monitoring device proposed in the present application, wherein a schematic diagram of the operation flow of the parking mode in the vehicle condition mode; Figure 4 is an embodiment of the tire pressure monitoring device proposed in the present application, wherein the operation flow diagram of the driving mode in the vehicle condition mode; Figure 5 It is a schematic diagram of the embodiment architecture of the tire pressure monitoring system proposed in this application.

[0049] Reference numerals: main control module 800, tire pressure monitoring device 200, user module 300, second BLE device 810, first BLE device 210, third BLE device 310, first Bluetooth binding relationship 410, second Bluetooth binding relationship 420, microprocessor 201, pressure sensor 220, acceleration sensor 230, temperature sensor 240, power storage device 250, power sensor 251, timer 260, vehicle condition mode 120, storage mode 121, parking mode 122, driving mode 123, alarm mode 130, alarm detection 140 DETAILED DESCRIPTION

[0050] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant technical solutions, rather than to limit the present application. It should also be noted that, for ease of description, only the parts related to the present application are shown in the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0051] First preferred embodiment: tire pressure monitoring device The first preferred embodiment of the present application is a tire pressure monitoring device 200, which is used in Figure 1 In the tire pressure monitoring system 10A shown, the tire pressure monitoring system 10A includes a main control module 800 and multiple tire pressure monitoring devices 200. The main control module 800 is set on the main console of the vehicle, and the tire pressure monitoring device is set on the tire of the vehicle. The tire pressure monitoring device 200 is provided with a first BLE device 210, and the main control module 800 is provided with a second BLE device 810. The first BLE device 210 and the second BLE device 810 form a first Bluetooth binding relationship 410. After the first Bluetooth binding relationship 410 is established, the main control module 800 and the tire pressure monitoring device 200 do not need to establish a "handshake connection" and can transmit information and data to each other through Bluetooth broadcasting.

[0052] Please continue to see Figure 1 The tire pressure monitoring device 200 of the present application adopts an integrated structure, including a microprocessor 201, a timer 260, a power storage device 250 that provides power for the operation of the tire pressure monitoring device 200, and multiple sensors. The sensor further includes a pressure sensor 220 for collecting tire pressure, an acceleration sensor 230 for collecting tire acceleration, and a temperature sensor 240 for collecting tire temperature. After the acceleration sensor 230 collects the acceleration data of the tire, the microprocessor 201 performs an integral operation to generate the vehicle speed. The power storage device 250 can use a button battery or a small lithium battery, which is not limited in the present application.

[0053] A major inventive feature of the tire pressure monitoring device 200 of the present application is that the microprocessor 201 is pre-set with at least three vehicle condition modes 120, multiple alarm detections 140 and multiple alarm modes 130. In each vehicle condition mode, the enabled sensors are not completely the same, the sensor data collection frequency is not completely the same, and the alarm detection performed is not completely the same. When the result of the alarm detection is true, the corresponding alarm mode is triggered to execute, and a warning data packet is sent to the main control module 800 through Bluetooth broadcast based on the first Bluetooth binding relationship 410.

[0054] The vehicle condition mode 120 includes a storage mode 121, a parking mode 122, and a driving mode 123. The storage mode 121 mainly refers to the situation where the vehicle is stationary and stored for a long time in a parking lot, warehouse or similar place; the parking mode 122 mainly refers to the situation where the vehicle is parked, moving slowly to prepare for parking or starting slowly from parking; the driving mode 123, as the name implies, is the vehicle in driving state. The switching of various vehicle condition modes 120 including the storage mode 121, the parking mode 122, and the driving mode 123 is mainly based on the results of tire pressure, vehicle speed and various alarm detections 140.

[0055] Alarm detection 140 The alarm detection 140 is implemented in the tire pressure monitoring device 200. When the result of the alarm detection is false, it means that the tire is in normal condition and there is no need to send a warning data packet to the outside. Only when the result of the alarm detection is true will the corresponding alarm mode be triggered and then a warning data packet is sent to the main control module 800 via Bluetooth broadcast based on the first Bluetooth binding relationship 410.

[0056] The contents of alarm detection 140 mainly include: Bluetooth unbinding detection, fast air leakage detection, slow air leakage detection, ultra-slow air leakage detection and temperature detection.

[0057] More specifically, in the alarm detection 140, the Bluetooth unbinding detection is based on the first Bluetooth binding relationship 410 to detect whether the data transmission between the tire pressure monitoring device 200 and the main control module 800 is abnormal. If the detection result is true, it means that the first Bluetooth binding relationship 410 is abnormal, and the tire pressure monitoring device 200 and the main control module 800 have not completed the Bluetooth relationship binding. If the detection result is false, it means that the Bluetooth relationship binding between the tire pressure monitoring device 200 and the main control module 800 is normal.

[0058] Rapid air leakage detection is to detect whether the current tire pressure is less than the previous tire pressure (the tire pressure obtained by the previous data collection) and reaches the first pressure difference threshold. When the detection result is true, it means that rapid air leakage has occurred, triggering the execution of the rapid air leakage alarm. The first pressure difference threshold can be set between 30 and 50 kPa, and the preferred value in this application is 40 kPa.

[0059] Slow air leakage detection is to detect whether the current tire pressure is less than the tire pressure 5 minutes ago and reach the second pressure difference threshold. When the detection result is true, it means that a slow air leakage has occurred, triggering the execution of the slow air leakage alarm. The second pressure difference threshold can be set between 45 and 65 kPa, and 55 kPa is preferred in this application.

[0060] The ultra-slow air leakage detection is to detect whether the current tire pressure is less than the tire pressure 2 hours ago and reaches the third pressure difference threshold. When the detection result is true, it means that an ultra-slow air leakage has occurred, triggering the execution of the ultra-slow air leakage alarm. The third pressure difference threshold can be set between 60 and 80 kPa, and the preferred value in this application is 70 kPa.

[0061] Temperature detection is to detect whether the difference between the current tire temperature and the previous tire temperature (the tire temperature obtained by the previous data collection) reaches the temperature threshold. When the detection result is true, it means that the tire temperature change has exceeded the temperature threshold. Usually, it is a situation where the tire heats up abnormally and rapidly, and there is a high probability that danger may occur, triggering the execution of the temperature alarm. The preferred temperature threshold of this application is not less than 5°C.

[0062] Alarm mode 130 Alarm mode 130 is when the tire pressure monitoring device 200 sends an alarm message to the main control module 800 via Bluetooth broadcast based on the first Bluetooth binding relationship 410. It is the moment when the tire pressure monitoring device 200 consumes the most power, so it is only triggered to execute when the result of a specific detection (including the alarm detection 140) is true.

[0063] The contents of the alarm mode 130 include: inflation alarm, Bluetooth unbound alarm, flat alarm, low tire pressure alarm, fast air leakage alarm, slow air leakage alarm, super slow air leakage alarm and temperature alarm.

[0064] The inflation alarm is only executed in the storage mode 121. When the tire pressure reaches the first pressure threshold, the inflation alarm is triggered and the vehicle switches to the parking mode 122. The first pressure threshold is an indicator of whether the vehicle is inflated to change the storage state. It can be flexibly adjusted according to the actual situation. Generally, the first pressure threshold is preferably between 40 and 60 kPa, and 50 kPa is preferred in this application.

[0065] The flat tire alarm is executed in the parking mode 122 and the driving mode 123. When the tire pressure is less than the first pressure threshold, the flat tire alarm is triggered.

[0066] The low tire pressure alarm is also executed in the parking mode 122 and the driving mode 123. When the tire pressure is greater than the first pressure threshold and less than the second pressure threshold, the low tire pressure alarm is triggered. The second pressure threshold refers to the minimum pressure required for safe driving of the vehicle, and preferably reaches 100 kPa in this application.

[0067] The Bluetooth unbinding alarm corresponds to the Bluetooth unbinding detection, the fast air leakage alarm corresponds to the fast air leakage detection, the slow air leakage alarm corresponds to the slow air leakage detection, the ultra-slow air leakage alarm corresponds to the ultra-slow air leakage detection, and the temperature alarm corresponds to the temperature detection.

[0068] The following further describes the execution steps and contents of the storage mode 121 , the parking mode 122 , and the driving mode 123 in the vehicle condition mode 120 .

[0069] Storage Mode 121 As the name implies, storage mode 121 means that the vehicle is not moving and is stored in a warehouse for a long time. Therefore, in order to minimize power consumption, only the pressure sensor 220 is enabled, and the frequency of data collection is reduced to the minimum. The temperature sensor 240 and the acceleration sensor 230 are not enabled in storage mode 121 to reduce power consumption. Figure 2 , the implementation steps of the storage mode 121 include the following: 701: Collect tire pressure at first intervals for a first duration; the first duration is between 15 and 45 seconds, the shorter the duration, the faster the power consumption, the longer the duration, the slower the power consumption, and the first duration of this application is preferably 30 seconds. The aforementioned first duration determines the amount of tire pressure data collected, and a small amount of data collected is prone to large deviations, so the first duration should be more than 10ms, and the preferred duration of this application is 11.039ms.

[0070] 702 : When the tire pressure is less than the first pressure threshold of 50 kpa, the storage mode 121 is maintained.

[0071] 703: When the tire pressure reaches the first pressure threshold of 50 kpa, the inflation alarm is triggered and the vehicle switches to parking mode 122 at the same time.

[0072] It must be noted that in the storage mode 121, steps 702 and 703 do not necessarily have a sequential relationship, and the trigger execution order can be flexibly changed.

[0073] Parking mode 122 Parking mode 122 means that the vehicle is no longer in long-term storage and has entered a parking state for general use. Figure 3 , the implementation steps of the parking mode 122 include: 704: Execute Bluetooth unbinding detection. If the result is true, trigger the execution of Bluetooth unbinding alarm. In parking mode 122, the vehicle is already in normal use and is just in a parking state. Therefore, the first Bluetooth binding relationship 410 between the tire pressure monitoring device 200 and the main control module 800 is very important. If the first Bluetooth binding relationship 410 is abnormal, the purpose of tire pressure monitoring cannot be achieved. Therefore, the first step of parking mode 122 is to execute Bluetooth unbinding detection. If the detection result is true, it means that the Bluetooth binding is abnormal, and the execution of Bluetooth unbinding alarm is triggered.

[0074] 705: Start the first timing through the timer 260. When the first timing is less than the third time, the acceleration is collected every fourth time to generate the vehicle speed. When the first timing is equal to or greater than the third time, the acceleration is collected every fifth time to generate the vehicle speed. The third time is an indicator of whether the vehicle is parked for a short time or a long time, and can be set between 8 and 15 minutes. The preferred time in this application is 10 minutes. When the first timing is less than the third time, it is considered as a short parking, and the frequency of acceleration collection is faster; when the first timing is greater than the third time, it is considered as a long parking, and the frequency of acceleration collection is reduced to save power. The fourth time and the fifth time affect the frequency of collecting acceleration to generate the vehicle speed. When the vehicle is parked for a short time, the fourth time for acceleration collection can be set between 28 and 48 seconds. The preferred time in this application is 36 seconds. When the vehicle is parked for a long time, the fifth time for acceleration collection can be set between 8 and 15 minutes. The preferred time in this application is 10 minutes.

[0075] 706: Collect tire pressure and temperature at second intervals; the second interval affects the frequency of collecting tire pressure and temperature. The data collection frequency of parking mode 122 must obviously be higher than that of storage mode 121. The second interval can be set between 6 and 15 seconds, and 9 seconds is preferred in this application.

[0076] 707: When the tire pressure is less than the first pressure threshold of 50 kpa, triggering the execution of the flat tire alarm; 708: When the tire pressure is greater than the first pressure threshold of 50 kPa and less than the second pressure threshold of 100 kPa, a low tire pressure alarm is triggered.

[0077] 709: Execute a quick air leak test. If the result is true, trigger a quick air leak alarm.

[0078] 710: Execute slow air leakage detection. If the result is true, trigger the execution of slow air leakage alarm.

[0079] 711: Execute ultra-slow air leakage detection. If the result is true, trigger the ultra-slow air leakage alarm.

[0080] 712: Execute temperature detection. If the result is true, trigger the execution temperature alarm.

[0081] 713: When the tire pressure is less than the first pressure threshold of 50 kpa and the vehicle speed is less than the speed threshold, switch to storage mode 121. The speed threshold is an indicator for determining whether the vehicle is stationary or in motion, and can be flexibly set. In this application, the preferred speed threshold is not less than 5 km / h.

[0082] 714: When the tire pressure reaches the second pressure threshold of 100 kpa and the vehicle speed reaches the speed threshold of 5 km / h, it means that the tire pressure has reached normal pressure and the vehicle is moving, and the driving mode 123 should be switched.

[0083] In parking mode 122, tire pressure and tire temperature are generated simultaneously every 9 seconds of the second time, but the vehicle speed is not generated simultaneously with the tire pressure. The vehicle speed is generated every 36 seconds of the fourth time (short parking) or 10 minutes of the fifth time (long parking). This is mainly because the focus of this application is tire pressure, and tire temperature directly affects tire pressure. The higher the tire temperature, the higher the tire pressure. However, vehicle speed does not directly affect tire pressure, but first affects tire temperature and then affects tire pressure, because the higher the vehicle speed, the higher the frequency of friction between the tire and the ground, and the higher the tire temperature, which affects tire pressure. Therefore, in parking mode 122, the detection frequency of vehicle speed will be lower than the detection frequency of tire pressure and tire temperature.

[0084] It must be noted that in the parking mode 122, steps 707 to 714 do not have a necessary order relationship, and the trigger execution order can be flexibly changed.

[0085] Driving Mode 123 Driving mode 123 refers to the state where the vehicle is moving, so the content and steps to be performed are not exactly the same as those in parking mode 122. Figure 4 , the implementation steps of driving mode 123 include: 704: Execute Bluetooth unbinding detection. If the result is true, trigger the execution of Bluetooth unbinding alarm.

[0086] 706: Collect tire pressure and tire temperature every 9 seconds.

[0087] 715: Generate vehicle speed every fourth time period of 36 seconds.

[0088] 707: When the tire pressure is less than the first pressure threshold of 50 kpa, a flat tire alarm is triggered.

[0089] 708: When the tire pressure is greater than the first pressure threshold of 50 kPa and less than the second pressure threshold of 100 kPa, a low tire pressure alarm is triggered.

[0090] 709: Execute a quick air leak test. If the result is true, trigger a quick air leak alarm.

[0091] 710: Execute slow air leakage detection. If the result is true, trigger the execution of slow air leakage alarm.

[0092] 711: Execute ultra-slow air leakage detection. If the result is true, trigger the ultra-slow air leakage alarm.

[0093] 712: Execute temperature detection. If the result is true, trigger the execution temperature alarm.

[0094] 716: When the vehicle speed is lower than the speed threshold of 5 km / h, switch to parking mode 122.

[0095] In driving mode 123, tire pressure and tire temperature are generated simultaneously every 9 seconds of the second time, but vehicle speed is not generated simultaneously with tire pressure, and vehicle speed is generated every 36 seconds of the fourth time. This is mainly because the focus of this application is tire pressure, and tire temperature directly affects tire pressure. The higher the tire temperature, the higher the tire pressure. However, vehicle speed does not directly affect tire pressure, but affects tire temperature first, because the higher the speed, the higher the frequency of friction between the tire and the ground, and the higher the tire temperature, which affects tire pressure. Therefore, in driving mode 123, the detection frequency of vehicle speed will be lower than the detection frequency of tire pressure and tire temperature.

[0096] It must be noted that in driving mode 123, steps 707 to 716 do not have a necessary sequence relationship, and the trigger execution sequence can be flexibly changed.

[0097] The first broadcast mode to the eighth broadcast mode The broadcast mode in the diversified alarm mode 130 of the tire pressure monitoring device 200 is another feature of the present application. The inflation alarm sends a warning data packet in the first broadcast mode. The first broadcast mode specifically sends warnings in seven stages, with an interval of 10 minutes between each stage. In the first stage, 9 warnings are sent, and six warning data packets are sent through three channels each time. The time interval between each two warnings is 2 seconds, and the interval between each two warning data packets is 75-125ms. After the first stage is sent, the parking mode 122 is entered. From the second stage to the seventh stage, a warning is sent in each stage, and six warning data packets are sent through three channels each time. The time interval between each two warnings is 2 seconds, and the interval between each two warning data packets is 75-125ms.

[0098] The Bluetooth unbinding alarm sends a warning data packet in the second broadcast mode. The second broadcast mode specifically sends an unbinding warning data packet every two minutes, and each broadcast lasts 3 seconds. This intermittent sending continues until the data transmission of the first Bluetooth binding relationship 410 is normal.

[0099] The low gas alarm sends warning data packets in the third broadcast mode. The third broadcast mode specifically sends 15 warnings. The time interval between each two warnings is 2 seconds. Six warning data packets are sent through three channels each time. The sending interval between each two warning data packets is 75 to 125 ms, preferably 100 ms.

[0100] The low tire pressure alarm sends warning data packets in the fourth broadcast mode. The fourth broadcast mode specifically sends 10 warnings. The time interval between each two warnings is 2 seconds. Six warning data packets are sent through three channels each time. The sending interval between each two warning data packets is 75 to 125 ms, preferably 100 ms.

[0101] The quick air leakage alarm sends warning data packets in the fifth broadcast mode. The fifth broadcast mode specifically sends 11 warnings. The time interval between each two warnings is 2 seconds. Six warning data packets are sent through three channels each time. The sending interval between each two warning data packets is 75 to 125 ms, preferably 100 ms.

[0102] The slow air leak alarm sends warning data packets in the sixth broadcast mode. The sixth broadcast mode specifically sends 6 warnings. The time interval between each two warnings is 2 seconds. Six warning data packets are sent through three channels each time. The sending interval between each two warning data packets is 75-125ms, preferably 100ms.

[0103] The ultra-slow air leak alarm sends warning data packets in the seventh broadcast mode. The seventh broadcast mode specifically sends 5 warnings. The time interval between each two warnings is 2 seconds. Six warning data packets are sent through three channels each time. The sending interval between each two warning data packets is 75-125ms, preferably 100ms.

[0104] The temperature alarm sends warning data packets in the eighth broadcast mode. The eighth broadcast mode specifically sends 3 warnings. The time interval between each warning is 2 seconds. Six warning data packets are sent through three channels each time. The sending interval between each two warning data packets is 75 to 125 ms.

[0105] In each of the aforementioned alarms, six warning data packets are sent through three channels each time, and the interval between every two warning data packets is 75 to 125 ms, so as to ensure that the warnings issued by the tire pressure monitoring device 200 through the BLE broadcast can be transmitted to the main control module 800. From the aforementioned inflation alarm to the temperature alarm, the more important and critical the alarm is, the longer the warning will be sent and the more times it will be sent. The Bluetooth unbound alarm is the most critical alarm, so there is no limit on the number of times, and the warning will continue to be issued until the data transmission of the first Bluetooth binding relationship 410 is normal. The inflation alarm is also extremely important, so it is the only one that sends alarm information through seven stages.

[0106] Since the alarm times of various alarm modes are different, when the main control module 800 receives an alarm, it can quickly distinguish the specific alarm situation and immediately notify and remind users, including but not limited to drivers, crew members or safety officers, to take corresponding safety measures.

[0107] In a further embodiment, the tire pressure monitoring device 200 of the present application is further provided with a power sensor 251 for collecting the power of the power storage device 250, such as Figure 1 As shown, the warning mode 130 also includes a low power warning. In the parking mode 122 and the driving mode 123, the following steps are respectively implemented: 717: Collect power consumption every 24 hours.

[0108] 718: When the power level is less than the power threshold, a low power alarm is triggered.

[0109] More specifically, in order to achieve a balance between power consumption and warning, the sixth time should be no less than 24 hours, and the power threshold can be set to 5% or even less of the initial power of the power storage device 250. The power shortage alarm can use the eighth broadcast mode to send a warning data packet.

[0110] Second preferred embodiment: tire pressure monitoring system The present application further proposes a second preferred embodiment, which is a tire pressure monitoring system 10, such as Figure 5 As shown. The tire pressure monitoring system 10 includes a main control module 800, multiple tire pressure monitoring devices 200 and at least one user module 300. The main control module 800 is set on the main console of the vehicle, and the tire pressure monitoring device 200 is set on the tire of the vehicle. The user module 300 is set on a mobile terminal, which can be a smart phone or a tablet; the number is at least one, but it can also be multiple.

[0111] The tire pressure monitoring device 200 is the tire pressure monitoring device 200 described in the first preferred embodiment, and its specific features are not repeated here. The tire pressure monitoring device 200 is arranged on each tire of the vehicle, and its number depends on the type of the vehicle and the number of tires used during driving of the vehicle. For a small three-wheeled or four-wheeled vehicle, the number of tire pressure monitoring devices 200 is three or four. For a large truck, the number of tire pressure monitoring devices 200 is six depending on the number of tires. For a multi-axle trailer with a particularly large number of tires, the number of tire pressure monitoring devices 200 also needs to be increased accordingly, and the technical solutions of the present application can be applied thereto.

[0112] The main control module 800 is provided with a second BLE device 810, each tire pressure monitoring device 200 is provided with a first BLE device 210, and the user module 300 is provided with a third BLE device 310. The second BLE device 810 and all the first BLE devices 210 form a first Bluetooth binding relationship 410, and all the third BLE devices 310 and the second BLE device 810 form a second Bluetooth binding relationship 420. Figure 5As shown. After the first Bluetooth binding relationship 410 is established, the main control module 800 and the tire pressure monitoring device 200 do not need to establish a "handshake connection" to transmit information and data to each other through Bluetooth broadcasting. Similarly, after the second Bluetooth binding relationship 420 is established, the main control module 800 and the user module 300 do not need to establish a "handshake connection" to transmit information and data to each other through Bluetooth broadcasting. More specifically, the main control module 800 establishes a Bluetooth binding relationship with all tire pressure monitoring devices 200 at the same time, and each tire pressure monitoring device 200 establishes a Bluetooth binding relationship with the main control module 800 respectively, and Bluetooth binding is not established between tire pressure monitoring devices 200. On the other hand, the main control module 800 establishes a Bluetooth binding relationship with all user modules 300 at the same time, and each user module 300 establishes a Bluetooth binding relationship with the main control module 800 respectively, and Bluetooth binding is not established between user modules 300.

[0113] That is, the main control module 800 can receive all data sent by the tire pressure monitoring device 200 through BLE broadcast via BLE broadcast. The main control module 800 can also send vehicle condition information, tire condition information and alarm information to the user module 300 through BLE broadcast. Users holding the user module 300, such as drivers, crew members, and safety officers, can understand the status of the car and tires at any time as needed.

[0114] Specifically, when the tire pressure monitoring system of the present application is powered on, the main control module 800 will automatically send instructions to all tire pressure monitoring devices 200 based on the first Bluetooth binding relationship 410 to calibrate the tire pressure and save the calibration value, without manual calibration or APP calibration, which greatly reduces labor costs and power loss. After the tire pressure calibration is completed, the microprocessor 201 of the tire pressure monitoring device 200 automatically starts to run the vehicle condition mode 120, and performs the alarm detection 140 required by various vehicle condition modes 120 according to the tire pressure, tire temperature, vehicle speed, etc., and switches the vehicle condition mode 120 in a timely manner. When the result of the alarm detection 140 is true, an alarm is sent to the main control module 800 through Bluetooth broadcast based on the first Bluetooth binding relationship 410.

[0115] After the main control module 800 receives the alarm broadcast by the tire pressure monitoring device 200 based on the first Bluetooth binding relationship 410, it will send the alarm to the user module 300 via Bluetooth broadcast based on the second Bluetooth binding relationship 420 to remind users, including but not limited to drivers, crew members or safety officers, to take corresponding safety measures.

[0116] In summary, the tire pressure monitoring device 200 of the present application, according to the setting of the microprocessor, in the storage mode 121, the parking mode 122 and the driving mode 123, uses different sensors, the frequency of collecting tire pressure, tire temperature and vehicle speed is different, the items of alarm detection 140 are different, and the specific content of triggering the execution of the alarm mode 130 is different. Therefore, the frequency of the tire pressure monitoring device 200 broadcasting alarm information to the main control module 800 based on the first Bluetooth binding relationship 410 is also different, thereby minimizing the power consumption of the tire pressure monitoring device 200 in the storage mode 121 and long-term parking. After actual measurement, in the storage mode 121, even if the tire pressure and tire temperature are collected once every 30 seconds, the collection time is 11.039ms, and the average current is 1.218727 mA, the average current of the tire pressure monitoring device 200 is only 1.225㎂, and it can be stored for 18 years using a CR2032 battery. In daily use, the average daily power consumption can be as low as 3.365㎂, and the battery life can be as long as 6.6 years. That is to say, the battery does not need to be replaced within 6 years, taking user experience into account to the greatest extent.

[0117] The tire pressure monitoring device of the present application achieves accurate monitoring and response to the tire conditions under different operating conditions of the vehicle by setting different time parameters (first time, second time, third time, fourth time, fifth time) and threshold parameters (first pressure threshold, second pressure threshold, first pressure difference threshold, second pressure difference threshold, speed threshold, temperature threshold).

[0118] The tire pressure monitoring device and tire pressure monitoring system proposed in this application have the following beneficial effects: (1) Multi-parameter monitoring and analysis: The tire pressure monitoring device of the present application integrates a microprocessor, a tire pressure sensor, a temperature sensor, an acceleration sensor and a power sensor, and can collect tire pressure, tire temperature and vehicle acceleration data in real time, and generate vehicle speed through acceleration data. This multi-parameter monitoring method enables the main control module of the tire pressure monitoring system to fully understand the operating status of the tire, and by combining tire pressure, temperature and speed information, it can more accurately judge the safety of the tire. The tire pressure monitoring device also conducts a comprehensive analysis based on the tire pressure, tire temperature, vehicle speed and time to determine the vehicle condition mode, thereby adjusting the data collection frequency of the sensor. The sensor data collection frequency and wireless communication alarm frequency of different vehicle condition modes are different, so that the power consumption of the tire pressure monitoring device and tire safety monitoring are balanced. The tire pressure monitoring device can also trigger the execution of the alarm mode in a timely manner according to the tire alarm detection situation. This comprehensive analysis capability significantly improves the accuracy and reliability of the system.

[0119] (2) Application of low-power Bluetooth BLE communication technology: Most traditional tire pressure monitoring systems rely on RF communication technology. This RF technology has certain limitations in terms of transmission distance and data stability, and is power-consuming. Most of the power of the monitoring device installed in the tire is consumed in RF communication. In recent years, some tire pressure monitoring systems have begun to adopt low-power Bluetooth BLE technology. After binding the tire pressure monitoring device with the main control module of the central console through Bluetooth, data broadcasting and transmission are performed. In theory, it has the advantages of low power consumption and high reliability. However, whether it is traditional RF technology or BLE technology, the maximum power consumption is when data is transmitted wirelessly. Whether it is RF technology or BLE technology, the tire pressure monitoring system of the prior art transmits data after the sensor collects data, which is very power-consuming. The sensor of the present application does not transmit data immediately after collecting data. The tire pressure monitoring device is planned to set up a variety of alarm detection. BLE data transmission is performed only when the alarm detection result is true, that is, an abnormality is found and the alarm mode is triggered. This reduces power consumption to the greatest extent possible, effectively prolongs the service life of the tire pressure monitoring device, and reduces the frequency of battery replacement.

[0120] (3) Intelligent switching and flexible response of multiple vehicle condition modes: The tire pressure monitoring device of the present application sets multiple vehicle condition modes according to different vehicle conditions, including storage mode, parking mode, and driving mode. In different vehicle condition modes, the tire pressure monitoring device adjusts the frequency and type of data collection accordingly. For example, in storage mode, the tire pressure monitoring device collects tire pressure at a longer time interval, but does not need to collect tire temperature and acceleration data to reduce energy consumption; in driving mode, tire pressure, tire temperature and acceleration data are collected at a shorter time interval to ensure the real-time nature of the data.

[0121] (4) Low energy consumption design: Since the tire pressure monitoring device needs to run for a long time, how to reduce energy consumption is an important design consideration. This application effectively reduces the energy consumption of the system and improves the endurance of the tire pressure monitoring device through reasonable hardware integration design, the use of BLE communication modules, and adjustment of the data collection frequency of the sensor under different vehicle conditions. This low energy consumption architecture ensures that the tire pressure monitoring device can maintain stable and efficient performance during long-term operation, reduces the frequency of battery replacement of the tire pressure monitoring device, and improves the user experience.

[0122] (5) High user interactivity and convenience: BLE technology supports point-to-multipoint communication mode. This application uses BLE technology to enable the main control module to exchange data with multiple tire pressure monitoring devices on the one hand, and to transmit and interact information with user modules installed on mobile terminals (such as smartphones or tablets) on the other hand, thereby improving the efficiency and response speed of the tire pressure monitoring system. Users can view data such as tire pressure, temperature, speed and power through a dedicated application, and receive immediate notification when the main control module issues an alarm. This design not only improves the user experience, but also enhances the convenience of using the system. At the same time, when the tire pressure monitoring device detects an abnormal situation (such as abnormal tire pressure or increased tire temperature) through alarm detection, it will immediately trigger the execution of the alarm mode and broadcast an alarm message to the main control module through BLE to remind users, including but not limited to drivers, crew members or safety officers, to take corresponding safety measures. This system architecture can ensure safety and improve the overall performance of the system.

[0123] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A tire pressure monitoring device (200), used in a tire pressure monitoring system, the tire pressure monitoring system comprising a main control module (800) and a plurality of the tire pressure monitoring devices (200), the main control module (800) being arranged on a main console of a vehicle, the tire pressure monitoring devices (200) being arranged on tires of the vehicle, the tire pressure monitoring device (200) being provided with a first BLE device (210), and the main control module (800) being provided with a second BLE device (810); characterized in that: The first BLE device (210) and the second BLE device (810) form a first Bluetooth binding relationship (410); The tire pressure monitoring device (200) comprises a microprocessor (201), a timer (260), a power storage device (250) for providing power for the operation of the tire pressure monitoring device, and a plurality of sensors, wherein the sensors further comprise a pressure sensor (220) for collecting the tire pressure, an acceleration sensor (230) for collecting the tire acceleration, and a temperature sensor (240) for collecting the tire temperature; The microprocessor (201) is provided with at least three different vehicle condition modes (120). Under each of the vehicle condition modes (120), the enabled sensors are not completely the same, the data collection frequencies of the sensors are not completely the same, and the executed alarm detections (140) are not completely the same; when the result of the alarm detection (140) is true, the corresponding alarm mode (130) is triggered to be executed, and a warning data packet is sent to the main control module (800) via Bluetooth broadcast based on the first Bluetooth binding relationship (410).

2. The tire pressure monitoring device (200) according to claim 1, characterized in that: The vehicle condition mode (120) includes a storage mode (121), a parking mode (122), and a driving mode (123); The alarm detection (140) includes Bluetooth unbinding detection, fast air leakage detection, slow air leakage detection, ultra-slow air leakage detection, and temperature detection; The alarm modes (130) include inflation alarm, Bluetooth unbound alarm, flat alarm, low tire pressure alarm, fast air leakage alarm, slow air leakage alarm, ultra-slow air leakage alarm, and temperature alarm.

3. The tire pressure monitoring device (200) according to claim 2, characterized in that: The storage mode (121) comprises the following steps: (701) collecting the tire pressure at first intervals for a first period of time; (702) When the tire pressure is less than a first pressure threshold, maintaining the storage mode (121); (703) When the tire pressure reaches the first pressure threshold, the inflation alarm is triggered and the vehicle switches to the parking mode (122); The parking mode (122) comprises the following steps: (704) Executing the Bluetooth unbinding detection, if the result is true, triggering the execution of the Bluetooth unbinding alarm; (705) starting a first timer, and when the first timer is less than a third timer, collecting the acceleration every fourth timer to generate the vehicle speed; and when the first timer is equal to or greater than the third timer, collecting the acceleration every fifth timer to generate the vehicle speed; (706) collecting the tire pressure and the tire temperature at second intervals; (707) When the tire pressure is less than the first pressure threshold, triggering the tire flat alarm; (708) When the tire pressure is greater than the first pressure threshold and less than the second pressure threshold, triggering execution of the low tire pressure alarm; (709) Executing the rapid air leakage detection, and if the result is true, triggering the rapid air leakage alarm; (710) Executing the slow air leakage detection, and if the result is true, triggering the execution of the slow air leakage alarm; (711) Executing the ultra-slow air leakage detection, and if the result is true, triggering the execution of the ultra-slow air leakage alarm; (712) performing the temperature detection based on the tire temperature, and if the result is true, triggering execution of the temperature alarm; (713) When the tire pressure is less than the first pressure threshold and the vehicle speed is lower than the speed threshold, switching to the storage mode (121); (714) When the tire pressure reaches the second pressure threshold and the vehicle speed reaches the speed threshold, switching to the driving mode (123); The driving mode (123) comprises the following steps: (704) Executing the Bluetooth unbinding detection, if the result is true, triggering the execution of the Bluetooth unbinding alarm; (706) collecting the tire pressure and the tire temperature at every second time interval; (715) generating the vehicle speed at every fourth time interval; (707) When the tire pressure is less than the first pressure threshold, triggering the tire flat alarm; (708) When the tire pressure is greater than the first pressure threshold and less than the second pressure threshold, triggering execution of the low tire pressure alarm; (709) Executing the rapid air leakage detection, and if the result is true, triggering the rapid air leakage alarm; (710) Executing the slow air leakage detection, and if the result is true, triggering the execution of the slow air leakage alarm; (711) Executing the ultra-slow air leakage detection, and if the result is true, triggering the execution of the ultra-slow air leakage alarm; (712) Performing the temperature detection, and if the result is true, triggering the execution of the temperature alarm; (716) When the vehicle speed is lower than the speed threshold, switching to the parking mode (122); In the alarm detection (140), the Bluetooth unbinding detection is to detect whether an abnormality occurs in the data transmission between the tire pressure monitoring device (200) and the main control module (800) through the first Bluetooth binding relationship (410); the fast air leakage detection is to detect whether the current tire pressure is less than the previous tire pressure and reaches a first pressure difference threshold; the slow air leakage detection is to detect whether the current tire pressure is less than the tire pressure 5 minutes ago and reaches a second pressure difference threshold; the ultra-slow air leakage detection is to detect whether the current tire pressure is less than the tire pressure 2 hours ago and reaches a third pressure difference threshold; the temperature detection is to detect whether the difference between the current tire temperature and the previous tire temperature reaches a temperature threshold; In the alarm mode (130), the inflation alarm sends the warning data packet in the first broadcast mode, the Bluetooth unbound alarm sends the warning data packet in the second broadcast mode, the flat alarm sends the warning data packet in the third broadcast mode, the low tire pressure alarm sends the warning data packet in the fourth broadcast mode, the fast air leakage alarm sends the warning data packet in the fifth broadcast mode, the slow air leakage alarm sends the warning data packet in the sixth broadcast mode, the super slow air leakage alarm sends the warning data packet in the seventh broadcast mode, and the temperature alarm sends the warning data packet in the eighth broadcast mode, and the first broadcast mode to the eighth broadcast mode are different from each other.

4. The tire pressure monitoring device (200) according to claim 3, characterized in that: The first broadcast mode includes sending warnings in seven stages, with an interval of 10 minutes between each stage, wherein 9 warnings are sent in the first stage, six warning packets are sent through three channels each time, the time interval between each two warnings is 2 seconds, and the interval between each two warning packets is 75 to 125 ms. After the first stage is sent, the parking mode (122) is entered; from the second stage to the seventh stage, a warning is sent in each stage, six warning packets are sent through three channels each time, the time interval between each two warnings is 2 seconds, and the interval between each two warning packets is 75 to 125 ms. The second broadcast mode is to send an unbound warning data packet every two minutes, each broadcast lasting 3 seconds, and continuing until the data transmission of the first Bluetooth binding relationship (410) is normal after an abnormality occurs; The third broadcast mode is to send 15 warnings, the fourth broadcast mode is to send 10 warnings, the fifth broadcast mode is to send 11 warnings, the sixth broadcast mode is to send 6 warnings, the seventh broadcast mode is to send 5 warnings, and the eighth broadcast mode is to send 3 warnings. In the third to eighth broadcast modes, the time interval between every two warnings is 2 seconds, and six warning data packets are sent through three channels each time, and the sending interval between every two warning data packets is 75 to 125 ms.

5. The tire pressure monitoring device (200) according to claim 4, characterized in that: The first time is between 15 and 45 seconds, the second time is between 6 and 15 seconds, the third time is between 8 and 15 minutes, the fourth time is between 28 and 48 seconds, and the fifth time is between 8 and 15 minutes. The first time length must be at least 10 ms.

6. The tire pressure monitoring device (200) according to claim 4, characterized in that: It also includes a power sensor (251) for collecting the power of the power storage device (250), the alarm mode (130) also includes a low-power alarm, and the storage mode (121), the parking mode (122) and the driving mode (123) also include collecting the power every sixth time, and when the power is less than a power threshold, triggering the low-power alarm.

7. The tire pressure monitoring device (200) according to claim 6, characterized in that: The sixth time is not less than 24 hours, and the power threshold is not greater than 5% of the initial power of the power storage device (250).

8. The tire pressure monitoring device (200) according to claim 3, characterized in that: The first pressure threshold is between 40 and 60 kPa, the second pressure threshold is not less than 100 kPa, the first pressure difference threshold is between 30 and 50 kPa, the second pressure difference threshold is between 45 and 65 kPa, and the third pressure difference threshold is between 60 and 80 kPa.

9. The tire pressure monitoring device (200) according to claim 3, characterized in that: The speed threshold is not less than 5 km / h, and the temperature threshold is not less than 5°C.

10. A tire pressure monitoring system, comprising a main control module (800), a plurality of tire pressure monitoring devices (200) and at least one user module (300), wherein the main control module (800) is arranged on a main console of a vehicle, each of the tire pressure monitoring devices (200) is arranged on each tire of the vehicle, and the user module (300) is arranged on a mobile terminal; characterized in that: The tire pressure monitoring device (200) is the tire pressure monitoring device (200) according to any one of claims 1 to 9; The main control module (800) is provided with a second BLE device (810), which forms a first Bluetooth binding relationship (410) with the first BLE device (210) of the tire pressure monitoring device (200); The user module (300) is provided with a third BLE device (310) which forms a second Bluetooth binding relationship (420) with the second BLE device (810); after the main control module (800) receives the alarm information sent by the tire pressure monitoring device (200) via Bluetooth broadcast based on the first Bluetooth binding relationship (410), the main control module (800) sends the alarm information to the user module (300) via Bluetooth broadcast based on the second Bluetooth binding relationship (420).

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