Active tire pressure monitoring and Anti-loss system and method

Abstract

The present application provides an active tire pressure monitoring and anti-loss system and method. The system comprises: single-tire pressure monitoring modules, a vehicle-side intelligent networking gateway, a cloud platform and a user terminal; a communication unit and a Bluetooth low energy (BLE) master node are provided in the vehicle-side intelligent networking gateway; the vehicle-side intelligent networking gateway is in communication connection with the cloud platform by means of the communication unit, and the vehicle-side intelligent networking gateway is in communication connection with the single-tire pressure monitoring modules by means of the BLE master node; the cloud platform is in communication connection with the user terminal. By means of the vehicle-side intelligent networking gateway, the present application realizes networking and intelligence of isolated vehicle body tire pressure monitoring, can perform active tire pressure monitoring by means of user terminal control, and further achieves real-time sensing of tire positions by means of Bluetooth low energy channel detection, thereby realizing loss prevention of tires and avoiding asset loss of users.

Description

Active tire pressure monitoring and anti-lost system and method TECHNICAL FIELD

[0001] The present application relates to the Internet of Vehicles technology field, in particular to an active tire pressure monitoring and anti-lost system and method. BACKGROUND

[0002] At present, the tire pressure monitoring systems on the market can be divided into two types: one is to judge whether the tire is abnormal by the speed difference of the tire, to realize an indirect tire pressure monitoring system (Indirect Tire Pressure Monitoring System, referred to as indirect TPMS). The limitations of indirect TPMS: first, the indicator light cannot indicate which tire is in a low pressure state. Second, when both tires on the same axle or the same side are in a low pressure state, it cannot detect which tire is underinflated. Third, if all four tires are in a low pressure state, the system will not find this fault. In addition, the reduction of tire diameter and the reduction of air pressure are very small when the air pressure is insufficient. For thin tires, a pressure drop of 69kPa (~ 10psi) will only reduce the diameter by 1mm, which does not meet the 25% principle specified in the Final Ruling, and the detection by the indirect method depends largely on the tire and the load factor.

[0003] The other is a direct tire pressure monitoring system, which adds a tire pressure sensor in the tire, and automatically monitors the tire pressure and temperature in real time when the vehicle is stationary or running, and timely alarms for high pressure, low pressure and high temperature of the tire.

[0004] The current indirect TPMS based on Sub-1G communication is more of a single data collection and monitoring, and at present it is more of a single vehicle offline data, which cannot realize real-time monitoring of tire pressure data on the platform side / APP end (application).

[0005] At present, the world exists for the tire, which is a high-value movable asset of the vehicle body, and is easy to be stolen. The current common practice is passive anti-theft through anti-theft screws, and some manufacturers propose active anti-theft strategies based on wifi or cellular and other systems, which cannot accurately perceive the coordinate position of the tire and cannot accurately track the tire assets of the vehicle body.

[0006] SUMMARY

[0007] The purpose of the present application is to provide an active tire pressure monitoring and anti-lost system and method, which can realize active tire pressure monitoring and tire anti-lost.

[0008] The embodiment of the present application provides an active tire pressure monitoring and anti-lost system, which comprises a single tire pressure monitoring module, a vehicle end intelligent network gateway, a cloud platform and a user terminal.

[0009] The vehicle-end intelligent network gateway is provided with a communication unit and a Bluetooth low energy (BLE) master node, the vehicle-end intelligent network gateway is in communication connection with the cloud platform through the communication unit, and the vehicle-end intelligent network gateway is in communication connection with the single-tire pressure monitoring module through the BLE master node; the cloud platform is in communication connection with the user terminal;

[0010] The single-tire pressure monitoring module is arranged on a single tire of a vehicle, and the single-tire pressure monitoring module is provided with a plurality of sensor units, a radio frequency energy collection unit, a battery, a radio frequency unit, a radio frequency wake-up unit and a BLE sub-node;

[0011] The radio frequency energy collection unit is configured to receive radio frequency energy transmitted by an energy transmitter in the BLE master node and store the radio frequency energy in the battery;

[0012] The BLE master node is further configured to determine the position of the tire on which the single-tire pressure monitoring module is arranged by communication with the BLE sub-node;

[0013] The radio frequency wake-up unit is configured to receive a wake-up signal transmitted by the BLE master node through the radio frequency unit and wake up the BLE sub-node to collect tire pressure data of the vehicle;

[0014] The BLE sub-node is further configured to determine whether a trigger event occurs according to data collected by at least one of the sensor units and wake up the BLE master node to position the tire based on Bluetooth channel detection when the trigger event occurs.

[0015] In a possible implementation, the identity information of the BLE sub-node is stored in an OTP specific address segment built in the BLE sub-node.

[0016] In a possible implementation, the plurality of sensor units include a motion sensor unit, a pressure sensor unit and a temperature sensor unit.

[0017] In a possible implementation, the communication unit adopts 4G or 5G cellular communication.

[0018] The application also provides an active tire pressure monitoring and anti-loss method, which is based on the active tire pressure monitoring and anti-loss system described in the above embodiments, and the method comprises the following steps of:

[0019] Determining the start-stop state of the vehicle;

[0020] If the vehicle is started, stop executing the tire anti-loss strategy;

[0021] If the vehicle is turned off, start executing the tire anti-loss strategy;

[0022] The tire anti-loss strategy comprises: the BLE sub-node judging whether a trigger event occurs according to data collected by at least one of the sensor units, and waking up the BLE master node to perform tire position positioning based on Bluetooth channel detection to obtain a current tire position fingerprint when the trigger event occurs; the BLE master node comparing whether the current tire position fingerprint and an initial tire position fingerprint are the same; if not, sending a warning information to a cloud platform, and the cloud platform sending the warning information to a user terminal and starting a vehicle-side camera to shoot a warning video.

[0023] In a possible implementation manner, the method further comprises:

[0024] Before the vehicle is shipped, the BLE master node starts pairing with the BLE sub-nodes on the respective tires of the vehicle, and after the pairing is completed, the identity information of the BLE master node and the respective BLE sub-nodes is bound;

[0025] The BLE master node starts Bluetooth channel detection ranging to obtain an initial tire position fingerprint.

[0026] In a possible implementation manner, the method further comprises:

[0027] The cloud platform receives a tire pressure data collection request sent by the user terminal and forwards the tire pressure data collection request to the vehicle-side intelligent network gateway;

[0028] The vehicle-side intelligent network gateway wakes up the BLE sub-nodes through the BLE master node, and the BLE sub-nodes collect tire pressure data of the vehicle.

[0029] In a possible implementation manner, the method further comprises:

[0030] The BLE sub-node judges whether a trigger event occurs according to data collected by at least one of the sensor units based on a local model library.

[0031] In a possible implementation manner, the method further comprises:

[0032] The BLE master node updates the local model library of the BLE sub-node according to a set period.

[0033] Compared with the prior art, the active tire pressure monitoring and anti-lost system provided by the application comprises a single tire pressure monitoring module, a vehicle end intelligent network gateway, a cloud platform and a user terminal; the vehicle end intelligent network gateway is provided with a communication unit and a Bluetooth low energy (BLE) master node, the vehicle end intelligent network gateway is in communication connection with the cloud platform through the communication unit, and the vehicle end intelligent network gateway is in communication connection with the single tire pressure monitoring module through the BLE master node; the cloud platform is in communication connection with the user terminal; the single tire pressure monitoring module is arranged on a single tire of a vehicle, and the single tire pressure monitoring module is provided with a plurality of sensor units, a radio frequency energy collection unit, a battery, a radio frequency unit, a radio frequency wake-up unit and a BLE slave node; the radio frequency energy collection unit receives radio frequency energy transmitted by an energy transmitter in the BLE master node and stores the radio frequency energy in the battery; the BLE master node further determines the position of the tire where the single tire pressure monitoring module is located by communicating with the BLE slave node; the radio frequency wake-up unit receives a wake-up signal transmitted by the BLE master node through the radio frequency unit, wakes up the BLE slave node to collect tire pressure data of the vehicle; the BLE slave node further judges whether a trigger event occurs according to data collected by at least one sensor unit, and wakes up the BLE master node to perform tire position positioning based on Bluetooth channel detection when the trigger event occurs. It can be seen that the vehicle end intelligent network gateway is used to realize networking and intelligentization of isolated vehicle body tire pressure monitoring, active tire pressure monitoring can be controlled through the user terminal, real-time sensing of the tire position is realized through Bluetooth low energy channel detection, tire anti-lost is realized, and asset loss of the user is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0035] FIG. 1 shows a structure schematic diagram of an active tire pressure monitoring and anti-lost system provided by an embodiment of the application;

[0036] FIG. 2 shows a structure schematic diagram of a single tire pressure monitoring module provided by an embodiment of the application;

[0037] FIG. 3 shows a flowchart of a specific active tire pressure monitoring and anti-lost method provided by an embodiment of the application;

[0038] FIG. 4 shows a flowchart of specific node pairing and fingerprint extraction provided by an embodiment of the application. DETAILED DESCRIPTION

[0039] Exemplary embodiments of the present disclosure will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0040] It should be noted that, unless otherwise specified, technical terms or scientific terms used in the present application should be understood as their common meanings to those skilled in the art to which the present application pertains.

[0041] In addition, the terms "first" and "second" and the like are used to distinguish different objects, rather than to describe a particular order. Furthermore, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include other steps or units not listed or can optionally include other steps or units inherent to such processes, methods, products or devices.

[0042] The present application relates to a kind of based on vehicle end intelligent network gateway+channel sounding+energy recovery active tire pressure monitoring and anti-lost system, can be realized in active tire pressure monitoring vehicle body asset real-time positioning and anti-lost theft prevention simultaneously.By vehicle end intelligent network gateway, isolated vehicle body tire pressure monitoring is networked and intelligentized.Signal channel sounding function provides accurate ranging and positioning solution.Signal channel sounding is simultaneously estimated distance by phase measurement and RTT (round trip time) measurement and corrects each other, in vehicle body, especially in the positioning of movable key position, such as tire, through the fingerprint extraction of tire position of each vehicle when leaving factory, self-learning, when the position fingerprint of tire changes, through the vehicle end intelligent network gateway carried, actively alarm to cloud platform, vehicle owner can timely early warning to the possible loss of vehicle body asset, compared with other anti-lost theft prevention measures, the present application can realize real-time position sensing in the case of active tire pressure monitoring, and can realize decimeter level asset tracking, when the position fingerprint of asset exceeds the set threshold fence, actively alarm.The present application realizes active tire pressure under the support of vehicle networking technology, innovatively introduces vehicle body asset positioning function, and proposes an innovative architecture for the anti-theft strategy of vehicle body easy-to-steal components.

[0043] Please refer to Fig. 1, which is a structural schematic diagram of an active tire pressure monitoring and anti-lost system provided by an embodiment of the present application. The system comprises a single tire pressure monitoring module 10, a vehicle end intelligent network gateway 20, a cloud platform 30 and a user terminal 40.

[0044] The vehicle end intelligent network gateway 20 is provided with a communication unit 21 and a Bluetooth Low Energy (BLE) master node 22, the vehicle end intelligent network gateway 20 is in communication connection with the cloud platform 30 through the communication unit 21, and the vehicle end intelligent network gateway 20 is in communication connection with the single tire pressure monitoring module 10 through the BLE master node 22; the cloud platform 30 is in communication connection with the user terminal 40.

[0045] Specifically, the user terminal 40 can be a mobile phone as shown in FIG. 1. The communication unit 21 can adopt 4G or 5G cellular communication.

[0046] The vehicle end intelligent network gateway 20 can be a TBOX as shown in FIG. 1, TBOX is Telematics BOX, vehicle-mounted telematics processor. The vehicle end intelligent network gateway 20 integrates 4G / 5G cellular communication function, BLE master node function and wireless energy transmission function, and is responsible for data collection, diagnosis and uploading.

[0047] The BLE master node 22 carries the uplink collection of the tire pressure monitoring and the label function of the tire asset positioning function. It undertakes the wireless energy transmission function and provides wireless energy transmission for the tire pressure equipment. Specifically, the wireless energy transmission can be transmitted based on the radio frequency air interface.

[0048] The single tire pressure monitoring module 10 is arranged on a single tire of a vehicle, such as the left front wheel, the right front wheel, the left rear wheel, the right rear wheel and the spare tire as shown in FIG. 1.

[0049] As shown in FIG. 2, the single tire pressure monitoring module 10 is provided with a plurality of sensor units, a radio frequency energy collection unit 11, a battery 12, a radio frequency unit 13, a radio frequency wake-up unit 14 and a BLE sub-node 15.

[0050] Specifically, the BLE sub-node 15 can be a BLE-MCU (microprocessor).

[0051] Specifically, the plurality of sensor units can include a motion sensor unit, a pressure sensor unit and a temperature sensor unit. The motion sensor unit can be a six-axis sensor for collecting six-axis motion data of the tire; the pressure sensor unit is used to collect tire pressure data; and the temperature sensor unit is used to collect tire temperature inside the tire.

[0052] Identity information of the BLE sub-node 15 is stored in its built-in OTP (One Time Programmable, programmable once) specific address segment. In terms of anti-tampering of the identity information (ID) of the BLE sub-node, the uniqueness of the ID is set by the OTP, and during ID authentication, only the ID number of the OTP specific field can be read; the brand of the vehicle factory is protected against counterfeiting, and the sensor of the secondary factory cannot be replaced through cracking; and when the tire is stolen and used, if necessary, the ID can be queried through the cloud platform to trace the tire and pursue the stolen equipment.

[0053] The radio frequency energy collection unit 11 is configured to receive radio frequency energy transmitted by an energy transmitter in the BLE master node 22 and store the radio frequency energy in the battery 12. The radio frequency energy collection unit 11 can solve the problem of the current self-battery endurance time. Through the built-in wireless energy transmission device of the TBOX, the BLE sub-node recovers energy through the air interface in a wireless radio frequency manner and stores the energy in the battery, prolongs the service life of the battery, and solves the current endurance limitation dilemma.

[0054] The BLE master node 22 is further configured to determine the position of the tire where the single tire pressure monitoring module 10 is located by communicating with the BLE sub-node 15.

[0055] The radio frequency wake-up unit 14 is configured to receive a wake-up signal transmitted by the BLE master node 22 through the radio frequency unit 13, and wake up the BLE sub-node 15 to collect tire pressure data of the vehicle. Based on power consumption considerations, in a stationary state, the radio frequency wake-up unit can be used to wake up the single tire pressure monitoring module to collect data and perform uplink transmission, solving the current use blind area of tire pressure monitoring (which requires tire pressure collection when the vehicle is started or running). Through the radio frequency wake-up unit, the vehicle owner can perform a radio frequency wake-up action through the user terminal---> cloud platform---> TBOX---> BLE master node at home, and collect tire pressure data of the vehicle. Based on the radio frequency wake-up unit, the low-power strategy management of the system is realized.

[0056] The BLE sub-node 15 is further configured to determine whether a trigger event occurs according to the data collected by the at least one sensor unit, and wake up the BLE master node 22 to perform tire position positioning based on Bluetooth channel detection when the trigger event occurs. For example, when the tire vibrates, the motion sensor unit will first trigger the wake-up of the BLE sub-node, first perform event filtering and screening based on the built-in local vibration model (the model library can be updated periodically through Bluetooth), determine the trigger event, if the trigger model prompts risk overflow, actively wake up the TBOX, and perform precise position coordinate positioning with the BLE master node built in the TBOX based on channel detection, when the tire coordinate prompts fence overflow, perform anti-theft early warning through the TBOX to the cloud platform and the user terminal, and start video collection of the vehicle body for evidence, so as to facilitate asset tracking.

[0057] The HADM ranging shown in FIG. 1 refers to high accuracy distance measurement (HADM) for distance measurement between two BLE devices.

[0058] The precise positioning of the tire position coordinates based on the channel detection technology implemented in the embodiment has a qualitative improvement in the anti-theft of the tire assets in the case of decimeter-level positioning, and realizes precise management of the tire.

[0059] The active tire pressure monitoring and anti-lost system provided in the application comprises a single tire pressure monitoring module, a vehicle end intelligent network gateway, a cloud platform and a user terminal. The vehicle end intelligent network gateway is provided with a communication unit and a Bluetooth low energy (BLE) master node. The vehicle end intelligent network gateway is in communication connection with the cloud platform through the communication unit, and is in communication connection with the single tire pressure monitoring module through the BLE master node. The cloud platform is in communication connection with the user terminal. The single tire pressure monitoring module is arranged on a single tire of a vehicle. The single tire pressure monitoring module is provided with a plurality of sensor units, a radio frequency energy collection unit, a battery, a radio frequency unit, a radio frequency wake-up unit and a BLE slave node. The radio frequency energy collection unit receives radio frequency energy transmitted by an energy transmitter in the BLE master node and stores the radio frequency energy in the battery. The BLE master node determines the position of the tire where the single tire pressure monitoring module is arranged by communicating with the BLE slave node. The radio frequency wake-up unit receives a wake-up signal transmitted by the BLE master node through the radio frequency unit, wakes up the BLE slave node to collect tire pressure data of the vehicle. The BLE slave node judges whether a triggering event occurs according to data collected by at least one sensor unit, and wakes up the BLE master node to position the tire according to Bluetooth channel detection when the triggering event occurs. It can be seen that the vehicle end intelligent network gateway is used to realize networking and intelligentization of isolated vehicle body tire pressure monitoring, active tire pressure monitoring can be controlled through the user terminal, real-time sensing of the tire position is realized through Bluetooth low power channel detection, tire anti-lost is realized, and asset loss of the user is avoided.

[0060] The application also provides an active tire pressure monitoring and anti-lost method. The method is based on the active tire pressure monitoring and anti-lost system described in the above embodiment. The method comprises the following steps.

[0061] Determining the start-stop state of the vehicle;

[0062] If the vehicle is started, stop executing the tire anti-lost strategy;

[0063] If the vehicle is turned off, start executing the tire anti-lost strategy;

[0064] The tire anti-lost strategy comprises the following steps. The BLE slave node judges whether a triggering event occurs according to data collected by at least one sensor unit, and wakes up the BLE master node to position the tire according to Bluetooth channel detection when the triggering event occurs, to obtain a current tire position fingerprint. The BLE master node compares whether the current tire position fingerprint is the same as an initial tire position fingerprint. If not, the BLE master node sends a warning information to the cloud platform, the cloud platform sends the warning information to the user terminal, and starts a vehicle end camera to shoot a warning video.

[0065] For ease of understanding, the application provides a specific active tire pressure monitoring and anti-lost method flow chart as shown in FIG. 3.

[0066] In a possible implementation, the active tire pressure monitoring and anti-lost method further includes:

[0067] Before the vehicle is shipped, the BLE master node initiates pairing with the BLE slave nodes on each tire of the vehicle, and after the pairing is completed, the identity information of the BLE master node and each BLE slave node is bound.

[0068] The BLE master node initiates Bluetooth channel detection ranging to obtain an initial tire position fingerprint.

[0069] For ease of understanding, the application provides a specific node pairing and fingerprint extraction flow chart as shown in FIG. 4. The tire position fingerprint before shipment is the initial tire position fingerprint.

[0070] In a possible implementation, the active tire pressure monitoring and anti-lost method further includes:

[0071] The cloud platform receives a tire pressure data collection request sent by a user terminal and forwards the request to a vehicle-side intelligent network gateway.

[0072] The vehicle-side intelligent network gateway wakes up the BLE slave nodes through the BLE master node, and the BLE slave nodes collect tire pressure data of the vehicle.

[0073] In a possible implementation, the active tire pressure monitoring and anti-lost method further includes:

[0074] The BLE slave node determines whether a triggering event occurs based on a local model library and data collected by at least one of the sensor units.

[0075] In a possible implementation, the active tire pressure monitoring and anti-lost method further includes:

[0076] The BLE master node updates the local model library of the BLE slave node according to a set period.

[0077] The active tire pressure monitoring and anti-lost method provided by the application has the following beneficial effects:

[0078] 1. The innovative application of channel sounding technology in vehicle body asset tracking and positioning. Through channel sounding, the real-time tracking and management of high-value vehicle body components such as tires is achieved. Through the Bluetooth master node in the TBOX, the relative positions of the four tires are measured, achieving decimeter-level precision positioning. Compared to traditional RSSI positioning or AOA positioning, channel sounding avoids distance deviation caused by signal fluctuations. When the tire spatial position fingerprint changes and exceeds the threshold fence limit, the TBOX can send a cloud alarm and the owner's APP alarm, managing property loss risk.

[0079] 2. Traditional asset tags and positioning tags are limited by the capacity of the built-in battery, with limited endurance and positioning frequency. This pain point makes it difficult to achieve real-time positioning of high-value vehicle body assets like tires. Through the built-in energy recovery device in the tire asset positioning tag, the main node's energy transmitter delivers wireless energy to the four sub-nodes when the vehicle starts. When the vehicle starts, the energy transmitter is turned on, and the tire sub-nodes collect, store, and use RF energy through the energy collection unit. When the vehicle is turned off, the self-battery provides power for self-endurance management.

[0080] 3. RF wake-up: In the case of vehicle body static, a low-power optimization strategy is used. When the user terminal or cloud platform actively monitors tire pressure data, the TBOX's main node wakes up the four sub-nodes through RF wake-up technology to collect and return data, then enters sleep mode, waiting for the next RF wake-up, reducing the running power consumption of the sub-nodes.

[0081] 4. Tire pressure sub-node unique ID theft prevention: The built-in OTP specific address segment locks the ID address at the factory. The ID can be used to prevent counterfeiting at the vehicle factory, preventing the replacement of counterfeit parts. In the case of tire theft, the cloud platform can query the precise positioning of the tire corresponding to the ID, facilitating the tracing of stolen assets.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not change the essence of the corresponding technical solutions, which should be covered within the scope of the claims and description of the present application.

Claims

1. An active tire pressure monitoring and anti-loss system, characterized in that, The application relates to a single-tire pressure monitoring system, which comprises a single-tire pressure monitoring module, a vehicle-end intelligent network gateway, a cloud platform and a user terminal. The vehicle-end intelligent network gateway is provided with a communication unit and a Bluetooth low energy (BLE) master node, the vehicle-end intelligent network gateway is in communication connection with the cloud platform through the communication unit, and the vehicle-end intelligent network gateway is in communication connection with the single-tire pressure monitoring module through the BLE master node; the cloud platform is in communication connection with the user terminal. The single-tire pressure monitoring module is arranged on a single tire of a vehicle, and is provided with a plurality of sensor units, a radio frequency energy collection unit, a battery, a radio frequency unit, a radio frequency wake-up unit and a BLE slave node. The radio frequency energy collection unit is used for receiving radio frequency energy transmitted by an energy transmitter in the BLE master node and storing the radio frequency energy in the battery. The BLE master node is also used for determining the position of the tire where the single-tire pressure monitoring module is arranged by communicating with the BLE slave node. The radio frequency wake-up unit is used for receiving a wake-up signal transmitted by the BLE master node through the radio frequency unit, and wakes up the BLE slave node to collect tire pressure data of the vehicle. The BLE slave node is also used for judging whether a trigger event occurs according to data collected by at least one sensor unit, and wakes up the BLE master node to position the tire according to Bluetooth channel detection when the trigger event occurs. Identity information of the BLE slave node is stored in an OTP specific address segment built in the BLE slave node.

2. The system of claim 1, wherein, The plurality of sensor units comprise a motion sensor unit, a pressure sensor unit and a temperature sensor unit.

3. The system of claim 1, wherein, The communication unit adopts 4G or 5G cellular communication.

4. The system of claim 1, wherein, The method comprises the following steps:

5. An active tire pressure monitoring and anti-loss method, based on the active tire pressure monitoring and anti-loss system of any one of claims 1-4, characterized in that, determining the start-stop state of the vehicle; if the vehicle is started, stopping the execution of a tire anti-loss strategy; if the vehicle is turned off, starting the execution of the tire anti-loss strategy; the tire anti-loss strategy comprises that the BLE slave node judges whether a trigger event occurs according to data collected by at least one sensor unit, and wakes up the BLE master node to position the tire according to Bluetooth channel detection when the trigger event occurs, to obtain a current tire position fingerprint; the BLE master node compares whether the current tire position fingerprint is same as an initial tire position fingerprint; if not, the BLE master node sends early warning information to the cloud platform, the cloud platform sends the early warning information to the user terminal, and starts a vehicle-end camera to shoot early warning video. The method further comprises the following steps:

6. The method of claim 5, wherein, before the vehicle is shipped, the BLE master node starts pairing with the BLE slave nodes on each tire of the vehicle, and after the pairing is completed, the identity information of the BLE master node and each BLE slave node is bound; the BLE master node starts Bluetooth channel detection ranging, to obtain the initial tire position fingerprint. The method further comprises the following steps:

7. The method of claim 5, wherein, the cloud platform receives a tire pressure data collection request sent by the user terminal, and forwards the tire pressure data collection request to the vehicle-end intelligent network gateway; the vehicle-end intelligent network gateway wakes up the BLE slave node through the BLE master node, and the BLE slave node collects tire pressure data of the vehicle. The method further comprises the following steps:

8. The method of claim 5, wherein, the BLE slave node judges whether a trigger event occurs according to data collected by at least one sensor unit based on a local model library. The method further comprises the following steps:

9. The method of claim 8, wherein, ​ The BLE master node updates the local model library of the BLE slave node according to a set period.

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