CN116552172A

CN116552172A - Tire pressure monitoring system and method applied to two-wheel vehicle

Info

Publication number: CN116552172A
Application number: CN202310496380.1A
Authority: CN
Inventors: 林学政; 陶俊杰; 叶磊
Original assignee: Wuhan Bluestar Technology Co Ltd
Current assignee: Wuhan Bluestar Technology Co Ltd
Priority date: 2023-04-30
Filing date: 2023-04-30
Publication date: 2023-08-08

Abstract

The invention provides a tire pressure monitoring system and a method applied to a two-wheeled vehicle. According to the invention, bluetooth is used as a communication carrier of tire pressure data, the frequency band of 2.4GHz has stronger anti-interference capability than that of the traditional 433MHz or 315MHz, meanwhile, the second BLE Bluetooth module of the vehicle machine and the first BLE Bluetooth module of the tire are connected in a master-slave mode instead of broadcasting mode, duplex communication can be realized, point-to-point data bidirectional transmission can be realized, meanwhile, the safety of data communication is improved by using an encryption algorithm for key data, and the safety in the data transmission process of the two-wheel vehicle is further improved.

Description

Tire pressure monitoring system and method applied to two-wheel vehicle

Technical Field

The invention relates to the technical field of tire pressure monitoring, in particular to a tire pressure monitoring system and method applied to a two-wheel vehicle.

Background

The traditional tire pressure monitoring system (tire pressure monitoring system, TPMS) is characterized in that a tire pressure sensor adopting 433MHz or 315MHz wireless radio frequency communication is adopted to realize real-time monitoring of the tire pressure and the tire temperature, and the traditional tire pressure monitoring system is mainly used for monitoring the tire pressure and the tire temperature in real time in the running process of a motor vehicle and alarming abnormal conditions such as the tire pressure or the tire temperature so as to ensure the safety in the riding process.

Two-wheeled vehicles are modern vehicles and have become indispensable vehicles for people's daily life. With the continuous development of the two-wheeled motor vehicle industry, people pay more and more attention to safety. Tires are an important component of a two-wheeled motor vehicle running gear and are used to support the entire vehicle body. For the above reasons, the tire pressure monitoring system is applied to a two-wheeled vehicle. TPMS have been used by law as a standard accessory for two-wheeled motor vehicles in many countries and regions. The TPMS monitors the tire pressure in real time through the sensor module and the monitoring module. The tire pressure sensor module integrates various sensors, and can sense the temperature, pressure and centripetal acceleration of the tire. The sensor sends these signals to the monitoring module in a radio frequency manner. The monitoring module receives the wireless signals sent by the sensor module, and obtains the current tire pressure, temperature and fault condition through calculation and analysis so that a driver can know the condition of the tire.

With the development of computer technology, users pay more and more attention to the problem of data security, and the confidentiality is extremely poor because the traditional TPMS uses a broadcasting mode to transmit data, so how to further improve the security in the data transmission process of the two-wheel vehicle is a problem to be solved.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a tire pressure monitoring system and a method applied to a two-wheel vehicle, which are used for solving the problem of how to further improve the safety in the data transmission process of the two-wheel vehicle.

In a first aspect of the present invention, there is provided a tire pressure monitoring system for a two-wheeled vehicle, the system comprising: the tire pressure monitoring system comprises a tire pressure monitoring module, a first BLE Bluetooth module, a vehicle-mounted display module, a second BLE Bluetooth module, a third BLE Bluetooth module and a mobile APP module;

the tire pressure monitoring module is used for monitoring the states of the two tires and sending encrypted monitoring ciphertext to the second BLE Bluetooth module in a slave mode through the first BLE Bluetooth module;

the second BLE bluetooth module is configured to receive the monitoring ciphertext sent by the first BLE bluetooth module in a master mode, and further configured to send a monitoring result corresponding to the received monitoring ciphertext to the third BLE bluetooth module in a slave mode;

the vehicle-mounted display module is used for decrypting the received monitoring ciphertext, processing the decrypted monitoring ciphertext to obtain a monitoring result, and sending the monitoring result to the second BLE Bluetooth module;

The third BLE Bluetooth module is used for sending the received monitoring result to the mobile APP module in a main mode;

the mobile APP module is used for displaying the monitoring result in real time.

On the basis of the technical scheme, the invention can also make the following improvements.

Preferably, the mobile APP module is further configured to send a tire pressure matching instruction to the tire pressure monitoring module through a preset communication protocol, so that the tire pressure monitoring module returns matching information corresponding to the matching instruction, where the matching information includes a MAC address and a module position of the tire pressure monitoring module.

Preferably, the tire pressure monitoring module includes: a front tire pressure monitoring module and a rear tire pressure monitoring module;

the front tire pressure monitoring module is used for monitoring the tire pressure of the front tire of the two-wheeled vehicle and sending the encrypted monitoring result to the second BLE Bluetooth module through the first BLE Bluetooth module;

the rear tire pressure monitoring module is used for monitoring tire pressure of a rear tire of the two-wheeled vehicle and sending the encrypted monitoring result to the second BLE Bluetooth module through the first BLE Bluetooth module.

Preferably, the tire pressure monitoring module comprises an air pressure sensor, a temperature sensor, a motion sensor, a voltage sensor and a main control MCU, wherein the main control MCU is respectively connected with the air pressure sensor, the temperature sensor, the motion sensor and the voltage sensor;

The main control MCU is used for controlling the operation of the air pressure sensor, the temperature sensor, the motion sensor and/or the voltage sensor in a preset mode, wherein the preset mode comprises a storage mode, a parking mode, a pre-parking mode, a driving mode and an alarm mode.

Preferably, when the master control MCU monitors that the air pressure values of the two tires are lower than a preset air pressure threshold value P0 through the air pressure sensor, the master control MCU wakes up the air pressure sensor at a preset interval time T0 to monitor the tire pressures of the two tires, and simultaneously, the master control MCU turns off the temperature sensor, the motion sensor and the voltage sensor.

Preferably, when the master control MCU monitors that any one of the air pressure values of the two tires is greater than a preset air pressure threshold P0 through the air pressure sensor, the master control MCU controls the tire pressure monitoring module to monitor an air pressure variation difference value, a temperature value and a voltage value of the two tires at a preset interval time T1, and when the air pressure variation difference value is greater than a preset air pressure variation difference value δ, the temperature value is greater than a preset tire temperature threshold δ1 or the voltage value is less than a preset voltage threshold δ2, the master control MCU enters the alarm mode.

Preferably, when the master control MCU detects that the parking duration of the two-wheel vehicle reaches a preset parking threshold T through the motion sensor, the master control MCU controls the tire pressure monitoring module to send a current air pressure value, an air pressure change difference value, a temperature value and a voltage value of the two-wheel vehicle to the first BLE bluetooth module at a preset interval time T2, and when the air pressure change difference value is greater than a preset air pressure change difference value δ, the temperature value is greater than a preset tire temperature threshold δ1 or the voltage value is lower than a preset voltage threshold δ2, the master control MCU enters the alarm mode.

Preferably, when the master control MCU detects that the two-wheel vehicle is in a motion state through the motion sensor, the master control MCU controls the tire pressure monitoring module to send a current air pressure value, an air pressure change difference value, a temperature value and a voltage value of the two-wheel vehicle to the first BLE bluetooth module at a preset interval time T3, and when the air pressure change difference value is greater than a preset air pressure change difference value δ, the temperature value is greater than a preset tire temperature threshold δ1 or the voltage value is lower than a preset voltage threshold δ2, the master control MCU enters the alarm mode.

Preferably, when the alarm mode is entered, the main control MCU controls the tire pressure monitoring module to detect the air pressure variation difference value, the temperature value and the voltage value of the preset times for the two tires at the preset interval time T4, sends the detection result to the first BLE bluetooth module, and when the detection results of the preset times are all determined to be normal, the main control MCU cancels the alarm mode.

In a second aspect of the present invention, there is provided a tire pressure monitoring method applied to a two-wheeled vehicle including two tires, the method comprising:

the tire pressure detection module monitors the states of the two tires, and sends encrypted monitoring ciphertext to the second BLE Bluetooth module in a slave mode through the first BLE Bluetooth module;

the second BLE Bluetooth module receives the monitoring ciphertext sent by the first BLE Bluetooth module in a main mode and sends the monitoring ciphertext to a vehicle-mounted display module;

the vehicle-mounted display module decrypts the monitoring ciphertext, processes the decrypted monitoring ciphertext to obtain a monitoring result, and sends the monitoring result to the second BLE Bluetooth module;

The second BLE Bluetooth module sends the received monitoring result to a third BLE Bluetooth module in a slave mode;

and the third BLE Bluetooth module sends the received monitoring result to the mobile APP module in a main mode, so that the mobile APP module displays the monitoring result in real time.

In a third aspect of the present invention, there is provided an electronic device including a memory, and a processor for implementing the steps of the second aspect applied to the tire pressure monitoring method for a two-wheeled vehicle when executing a computer management program stored in the memory.

In a fourth aspect of the present invention, there is provided a computer-readable storage medium having stored thereon a computer-management-class program which, when executed by a processor, implements the steps of the above-described second aspect applied to a tire pressure monitoring method for a two-wheeled vehicle.

The invention provides a tire pressure monitoring system and a method applied to a two-wheeled vehicle, wherein the system comprises a tire pressure monitoring module, a first BLE Bluetooth module, a vehicle-mounted display module, a second BLE Bluetooth module, a third BLE Bluetooth module and a mobile APP module; the tire pressure monitoring module is used for monitoring the states of the two tires, and sending encrypted monitoring ciphertext to the second BLE Bluetooth module in a slave mode through the first BLE Bluetooth module; the second BLE bluetooth module is configured to receive, in a master mode, the monitoring ciphertext sent by the first BLE bluetooth module, and send, in a slave mode, a monitoring result corresponding to the received monitoring ciphertext to the third BLE bluetooth module; the vehicle-mounted display module is used for decrypting the received monitoring ciphertext, processing the decrypted monitoring ciphertext to obtain a monitoring result, and sending the monitoring result to the second BLE Bluetooth module; the third BLE bluetooth module is configured to send the received monitoring result to the mobile APP module in a master mode; the mobile APP module is used for displaying the monitoring result in real time. According to the invention, bluetooth is used as a communication carrier of tire pressure data, the frequency band of 2.4GHz has stronger anti-interference capability than that of the traditional 433MHz or 315MHz, meanwhile, the second BLE Bluetooth module of the vehicle machine and the first BLE Bluetooth module of the tire are connected in a master-slave mode instead of broadcasting mode, duplex communication can be realized, point-to-point data bidirectional transmission can be realized, meanwhile, the safety of data communication is improved by using an encryption algorithm for key data, and the safety in the data transmission process of the two-wheel vehicle is further improved.

Drawings

FIG. 1 is a schematic diagram of a tire pressure monitoring system for a two-wheeled vehicle according to the present invention;

FIG. 2 is a block diagram of a tire pressure monitoring system for a two-wheeled vehicle according to the present invention;

FIG. 3 is a schematic block diagram of a tire pressure monitoring module according to the present invention;

FIG. 4 is a software state machine model of the tire pressure monitoring module provided by the invention;

fig. 5 is a block diagram of a bluetooth communication link of the tire pressure monitoring system provided by the invention;

fig. 6 is a schematic diagram of a time slice of a bluetooth master-slave mode of a vehicle-mounted display module according to the present invention;

fig. 7 is a schematic protocol diagram of the bluetooth tire pressure monitoring module provided by the invention;

fig. 8 is a flowchart of a bluetooth tire pressure monitoring module provided by the invention, which is bound with a vehicle machine through a mobile phone APP;

fig. 9 is a flowchart of the bluetooth tire pressure monitoring module provided by the invention being directly paired with a vehicle machine;

fig. 10 is a flow chart of analyzing tire pressure data provided by the present invention;

FIG. 11 is a flowchart of a tire pressure monitoring method for a two-wheeled vehicle according to the present invention;

fig. 12 is a schematic hardware structure of one possible electronic device according to the present invention;

fig. 13 is a schematic hardware structure of a possible computer readable storage medium according to the present invention.

Detailed Description

The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.

The traditional tire pressure sensor has the basic function, and tire pressure data are transmitted to the MCU and then displayed on the LED lattice screen through real-time monitoring of the sensor. Such a system may already meet the basic demands of people for tire pressure, but is also faced with a number of demand problems. When the tire pressure monitoring system is gradually expanded to the two-wheel vehicle, the tire pressure information or the tire faults are displayed only through the screen, and the interactivity and the user experience of the TPMS are lacking in the running process of the two-wheel vehicle.

Therefore, the utility model aims at the two-wheeled vehicle field of riding, designs and develops a reliable two-wheeled vehicle TPMS with high-quality user experience based on bluetooth (a short distance communication technology within 10 m), solves the problems of poor TPMS display effect, poor user interactivity, inconvenient sensor matching and the like in the current market.

Fig. 1 is a schematic structural diagram of a tire pressure monitoring system for a two-wheeled vehicle according to the present invention, where, as shown in fig. 1, the system includes: tire pressure monitoring module 100, first BLE bluetooth module 200, in-vehicle display module 300, second BLE bluetooth module 400, third BLE bluetooth module 500 and mobile APP module 600.

The tire pressure monitoring module is used for monitoring the states of the two tires and sending encrypted monitoring ciphertext to the second BLE Bluetooth module in a slave mode through the first BLE Bluetooth module; the second BLE bluetooth module is configured to receive the monitoring ciphertext sent by the first BLE bluetooth module in a master mode, and further configured to send a monitoring result corresponding to the received monitoring ciphertext to the third BLE bluetooth module in a slave mode; the vehicle-mounted display module is used for decrypting the received monitoring ciphertext, processing the decrypted monitoring ciphertext to obtain a monitoring result, and sending the monitoring result to the second BLE Bluetooth module; the third BLE Bluetooth module is used for sending the received monitoring result to the mobile APP module in a main mode; the mobile APP module is used for displaying the monitoring result in real time.

It can be appreciated that the tire pressure monitoring system applied to a two-wheel vehicle in this embodiment is applied to a two-wheel vehicle, the two-wheel vehicle includes two tires, namely a front tire and a rear tire, the tire pressure monitoring module in this application may be a tire pressure detecting module composed of two tire pressure monitoring units, the two tire pressure monitoring units all include a pneumatic sensor, a temperature sensor, a motion sensor, a voltage sensor and a main control MCU, and meanwhile, in order to further improve the integration level of the module units, the tire pressure monitoring units may be integrated with a wireless transmitting module (namely, a first BLE bluetooth module), and the two tire pressure monitoring units are respectively installed on the two tires, thereby realizing the monitoring of the pneumatic pressure, the temperature and the running state of the two tires.

It should be understood that the encrypted monitoring ciphertext may be a monitoring ciphertext obtained by the tire pressure monitoring module encrypting the monitored air pressure value, the monitored temperature value, the monitored voltage value and the monitored running state by using an encryption algorithm.

Furthermore, in order to improve the data security, the encryption algorithm can also adopt a plaintext and a ciphertext to be used alternately, wherein the plaintext is used for facilitating the identification and filtration of equipment in the system in the embodiment, and the ciphertext is encrypted data, so as to protect key data in the driving process and improve the security and data confidentiality of the data.

Further, the BLE bluetooth module in this embodiment includes a first BLE bluetooth module, a second BLE bluetooth module and a third BLE bluetooth module, where the first BLE bluetooth module is installed near the tire and combined with the tire pressure detection module to send tire monitoring data, and can be divided into two parts according to the number of tires, and installed near the vehicle-mounted display module and combined with the vehicle-mounted display module to receive/send the tire monitoring data, and the third BLE bluetooth module is a bluetooth module of a mobile terminal and is used for combined with the mobile phone APP to receive the tire monitoring data and display.

Further, when the first BLE bluetooth module transmits data to the second BLE bluetooth module, the first BLE bluetooth module serves as a slave, the second BLE bluetooth module serves as a host, and the data is transmitted from the slave to the host.

Further, when the second BLE bluetooth module transmits data to the third BLE bluetooth module, the second BLE bluetooth module is switched to the slave, the third BLE bluetooth module serves as a host, and the data is transmitted from the slave to the host.

Further, in this embodiment, the second BLE bluetooth module adopts the time division multiplexing technology to realize master-slave switching, so that a vehicle machine bluetooth (second BLE bluetooth module) can be connected with a plurality of bluetooth modules such as bluetooth tire pressure monitoring module (first BLE bluetooth module), mobile phone APP and the like in a master-slave manner, so that the vehicle machine does not need to add a bluetooth receiving module, and hardware cost is reduced. And as the master-slave connection mode is adopted instead of the broadcast mode, both ends can carry out encryption communication on the data, thereby greatly improving the confidentiality and the security of the data.

It can be further appreciated that the above-mentioned vehicle-mounted display module can be used for decrypting the encrypted data, simultaneously shows the data after decrypting, can also encrypt the data after decrypting again and send to the mobile APP end, and above-mentioned vehicle-mounted display module can further calculate the analysis to tire pressure monitoring data to in time analyze out the current hidden problem of automobile tire, for example: and counting the variation of the tire pressure of the tire for a period of time, so as to judge whether the air leakage occurs.

It should also be understood that the mobile APP module may be a pre-installed APP on a mobile phone of a user, or may be a pre-installed APP on an industrial mobile terminal, so as to satisfy various application scenarios, for example: riding scenes in people's daily lives; but also a riding scenario in daily work.

It can be appreciated that based on the defects in the background art, the embodiment of the invention provides a tire pressure monitoring system applied to a two-wheel vehicle. The system comprises a tire pressure monitoring module, a first BLE Bluetooth module, a vehicle-mounted display module, a second BLE Bluetooth module, a third BLE Bluetooth module and a mobile APP module; the tire pressure monitoring module is used for monitoring the states of the two tires, and sending encrypted monitoring ciphertext to the second BLE Bluetooth module in a slave mode through the first BLE Bluetooth module; the second BLE bluetooth module is configured to receive, in a master mode, the monitoring ciphertext sent by the first BLE bluetooth module, and send, in a slave mode, a monitoring result corresponding to the received monitoring ciphertext to the third BLE bluetooth module; the vehicle-mounted display module is used for decrypting the received monitoring ciphertext, processing the decrypted monitoring ciphertext to obtain a monitoring result, and sending the monitoring result to the second BLE Bluetooth module; the third BLE bluetooth module is configured to send the received monitoring result to the mobile APP module in a master mode; the mobile APP module is used for displaying the monitoring result in real time. According to the invention, bluetooth is used as a communication carrier of tire pressure data, the frequency band of 2.4GHz has stronger anti-interference capability than that of the traditional 433MHz or 315MHz, meanwhile, the second BLE Bluetooth module of the vehicle machine and the first BLE Bluetooth module of the tire are connected in a master-slave mode instead of broadcasting mode, duplex communication can be realized, point-to-point data bidirectional transmission can be realized, meanwhile, the safety of data communication is improved by using an encryption algorithm for key data, and the safety in the data transmission process of the two-wheel vehicle is further improved.

In one possible embodiment, the tire pressure monitoring module includes: a front tire pressure monitoring module and a rear tire pressure monitoring module; the front tire pressure monitoring module is used for monitoring the tire pressure of the front tire of the two-wheeled vehicle and sending the encrypted monitoring result to the second BLE Bluetooth module through the first BLE Bluetooth module; the rear tire pressure monitoring module is used for monitoring tire pressure of a rear tire of the two-wheeled vehicle and sending the encrypted monitoring result to the second BLE Bluetooth module through the first BLE Bluetooth module.

In this embodiment, the tire pressure detection module is provided with the front tire pressure monitoring module and the rear tire monitoring module according to the characteristics of the two-wheeled vehicle, so that the front tire data and the rear tire data are independently monitored, and the problem of data errors caused by interleaving among the data is reduced.

In a possible application scenario, referring to fig. 2, fig. 2 is a block diagram of the tire pressure monitoring system for a two-wheeled vehicle, where the tire pressure monitoring system in the embodiment is composed of a tire pressure monitoring module, a vehicle-mounted display module and a matched mobile phone APP (mobile APP module), and the vehicle-mounted display module, the tire pressure monitoring module and the mobile phone APP all implement data communication through bluetooth.

Referring to fig. 3, fig. 3 is a schematic block diagram of a tire pressure monitoring module according to the present invention, where the tire pressure monitoring module includes an air pressure sensor, a temperature sensor, a motion sensor, a voltage sensor, and a wireless transmitting module. The tire pressure monitoring module mainly completes measurement and collection of tire data and emission of data, and meanwhile, in order to further reduce electricity consumption of a vehicle battery, in order to ensure operation time and efficiency of the whole set of monitoring system, the embodiment also provides a set of operation modes.

Further, the tire pressure monitoring module comprises an air pressure sensor, a temperature sensor, a motion sensor, a voltage sensor and a main control MCU, wherein the main control MCU is respectively connected with the air pressure sensor, the temperature sensor, the motion sensor and the voltage sensor; the main control MCU is used for controlling the operation of the air pressure sensor, the temperature sensor, the motion sensor and/or the voltage sensor in a preset mode, wherein the preset mode comprises a storage mode, a parking mode, a pre-parking mode, a driving mode, an alarm mode and a pairing mode.

Referring to fig. 4, fig. 4 is a software state machine model of the tire pressure monitoring module provided by the invention, in this embodiment, the operation states of the tire pressure monitoring module are divided to make the operation states of the tire pressure monitoring module different in different operation modes, so as to adjust the power consumption of the tire pressure monitoring module, and further make the tire pressure monitoring module meet the requirement of system monitoring, and delay the service life of the lithium battery built in the tire pressure monitoring module.

In a possible embodiment, the storage mode is entered when the master MCU monitors that the air pressure values of the two tires are lower than a preset air pressure threshold value P0 through the air pressure sensor, and the master MCU wakes up the air pressure sensor at a preset interval time T0 to monitor the tire pressures of the two tires, and simultaneously, the master MCU turns off the temperature sensor, the motion sensor and the voltage sensor.

In a specific implementation, after the tire pressure monitoring module is powered on, the tire pressure monitoring module detects a current air pressure value, and if the air pressure value is lower than a set threshold value P0 (a set air pressure threshold value), the tire pressure monitoring module enters a storage mode. In the storage mode, the tire pressure monitoring module detects a primary air pressure value at an interval T0, and other modules enter a sleep power-saving state except for a timer working at a time interval of two detections.

In a possible embodiment, the master control MCU enters the parking mode when the master control MCU monitors that any one of the air pressure values of the two tires is greater than a preset air pressure threshold P0 through the air pressure sensor, and the master control MCU controls the tire pressure monitoring module to monitor air pressure variation differences, temperature values and voltage values of the two tires at preset intervals T1, and enters the alarm mode when the air pressure variation differences are greater than a preset air pressure variation difference δ, the temperature values are greater than a preset tire temperature threshold δ1 or the voltage values are lower than a preset voltage threshold δ2.

In a specific implementation, after the tire pressure monitoring module detects that the air pressure value is greater than the threshold value P0, the tire pressure monitoring module enters a parking state, and at the moment, a motion sensor of the tire pressure monitoring module can start to work and can detect whether the current tire pressure monitoring module is in a motion state. In the parking mode, the tire pressure monitoring module is installed with a timing period of T1 to detect a current air pressure value, a movement state, a temperature value, and a voltage value of the module. Under the mode, the tire pressure monitoring module can carry out Bluetooth communication with the vehicle-mounted display module of the two-wheeled vehicle, so that the mac address of the tire pressure monitoring module is paired with and bound with the vehicle-mounted display module. On the premise of successful pairing and binding, when the tire pressure monitoring module detects that the difference value of the air pressure change exceeds delta (preset air pressure change difference value), or the tire temperature exceeds threshold delta 1 (preset tire temperature threshold), or the battery voltage is lower than threshold delta 2 (preset voltage threshold of the tire pressure monitoring module), the alarm mode is directly entered.

In a possible embodiment, when the master control MCU detects through the motion sensor that the parking duration of the two-wheeled vehicle reaches a preset parking threshold T, the master control MCU controls the tire pressure monitoring module to send a current air pressure value, an air pressure change difference value, a temperature value and a voltage value of the two-wheeled vehicle to the first BLE bluetooth module at a preset interval time T2, and when the air pressure change difference value is greater than a preset air pressure change difference value δ, the temperature value is greater than a preset tire temperature threshold δ1 or the voltage value is lower than a preset voltage threshold δ2, the master control MCU enters the alarm mode.

In a specific implementation, when the motion sensor of the tire pressure monitoring module detects that the tire pressure monitoring module does not move for a duration of t, the tire pressure monitoring module enters a pre-parking mode from a parking mode. In the pre-parking mode, the tire pressure monitoring module can send current data such as air pressure value, temperature, voltage and the like to the vehicle-mounted display module according to the period of T2. If the tire pressure monitoring module detects that the difference in air pressure change exceeds delta or the tire temperature exceeds a threshold delta 1 or the battery voltage is below a threshold delta 2, the alarm mode is entered directly.

In a possible embodiment, when the master control MCU detects that the two-wheeled vehicle is in a motion state through the motion sensor, the master control MCU controls the tire pressure monitoring module to send a current air pressure value, an air pressure change difference value, a temperature value and a voltage value of the two-wheeled vehicle to the first BLE bluetooth module at a preset interval time T3, and when the air pressure change difference value is greater than a preset air pressure change difference value δ, the temperature value is greater than a preset tire temperature threshold δ1 or the voltage value is lower than a preset voltage threshold δ2, the master control MCU enters the alarm mode.

In a specific implementation, when the motion sensor of the tire pressure monitoring module detects that the tire pressure monitoring module is in a motion state, the tire pressure monitoring module sends current data such as air pressure value, temperature, voltage and the like to the vehicle-mounted display module according to the time period of T3. If the tire pressure monitoring module detects that the difference in air pressure change exceeds delta or the tire temperature exceeds a threshold delta 1 or the battery voltage is below a threshold delta 2, the alarm mode is entered directly.

In a possible embodiment, when the alarm mode is entered, the main control MCU controls the tire pressure monitoring module to detect the air pressure variation difference value, the temperature value and the voltage value of the preset times for the two tires at a preset interval time T4, sends the detection result to the first BLE bluetooth module, and when the detection results of the preset times are all determined to be normal, the main control MCU cancels the alarm mode.

In a specific implementation, when the tire pressure monitoring module detects that the difference value of the change of the air pressure value exceeds delta or the temperature of the tire exceeds a threshold value delta 1 or the voltage of the battery is lower than a threshold value delta 2, the tire pressure monitoring module can rapidly and continuously send the current tire pressure, temperature and voltage values to the vehicle-mounted display module for multiple times; if the air pressure change difference value, the temperature and the voltage are all in the range of normal values after the alarm mode is set, the alarm mode is canceled after the interval T4 is used for detecting the air pressure change difference value, the temperature and the voltage for a plurality of times.

In one possible embodiment, the pairing mode includes that the user triggers a pairing instruction through the vehicle-mounted display module, so that the vehicle-mounted display module sends a radio frequency signal at one end to the tire pressure monitoring module, or the user charges and discharges the tire, so that the tire pressure monitoring module enters the pairing mode from the current registration mode. In the pairing mode, the Bluetooth module of the tire pressure monitoring module sends matching frame data to the slave, the Bluetooth module of the display module is the host, and the host scans the slave and filters Bluetooth equipment of a non-self system through UUID and shortname in the matching frame data. The on-load display module distinguishes whether the data is an information frame or a matching frame through analyzing the data reported by the tire pressure monitoring module and the agreed data bits, and after the on-load display module identifies the tire pressure monitoring module needing to be matched, the Bluetooth mac address of the on-load display module is bound with the tire set by the on-load display module.

Further, in the embodiment, data applied to the tire pressure monitoring system of the two-wheeled vehicle is transmitted by using a bluetooth link, referring to fig. 5, fig. 5 is a block diagram of a bluetooth communication link of the tire pressure monitoring system provided by the invention, and in order to realize high efficiency and safety of data transmission between the tire pressure monitoring module and the vehicle-mounted display module, the hardware cost of the vehicle-mounted display module is not increased, and the vehicle-mounted display module and the mobile phone APP are required to perform data interaction. Considering that the data volume reported by the tire pressure monitoring module is very small and generally does not exceed 25 bytes, the Bluetooth module of the vehicle-mounted display module uses a master-slave switching mode to respectively establish connection communication with the tire pressure monitoring module and the mobile phone APP.

Further, the bluetooth module of the vehicle-mounted display module uses a master-slave switching mode to respectively realize connection communication with the tire pressure monitoring module and the mobile phone APP, a time division multiplexing technology is adopted, a time slice diagram of the master-slave switching time slice distribution model is shown in fig. 6, fig. 6 is a time slice diagram of the bluetooth master-slave mode of the vehicle-mounted display module, and in fig. 6, a time t0 to a time t1 are slave modes of a second BLE bluetooth module of the vehicle-mounted display module, and data communication is established with the mobile phone APP in the slave modes. And the time from the time t1 to the time t2 is the master-slave switching time interval of the second BLE Bluetooth module of the vehicle-mounted display module, and the time of the vehicle-mounted display module is controlled at the us level. And the second BLE Bluetooth module of the vehicle-mounted display module is switched into a host mode from the time t2 to the time t3, and Bluetooth data interaction is carried out between the vehicle-mounted display module and the tire pressure monitoring module in the host mode.

Further, referring to fig. 7, fig. 7 is a schematic protocol diagram of the bluetooth tire pressure monitoring module according to the present invention, where MAC is a bluetooth MAC address of the tire pressure monitoring module and is a unique ID of the tire pressure monitoring module. UUID and shortname are fields for the meter to filter and distinguish the tire pressure monitoring module, len is the length of the entire data frame. DATA0 encodes for a user-defined device; DATA1 and DATA2 are combined to be a 12-bit serial number, and after each DATA transmission, the serial number is increased by one; DATA3 is state DATA (encrypted DATA) of the tire pressure monitoring module; DATA4 is the voltage of the tire pressure monitoring module (is encrypted DATA); DATA5 is the temperature (as encrypted DATA) detected by the tire pressure monitoring module; together, DATA6 and DATA7 are the air pressure value (as encrypted DATA) of the tire pressure monitoring module; DATA8 is a checksum check value (which is encrypted DATA).

Further, the specific description of the protocol bytes is as follows:

(1) DATA0: device number, constant 0x68

(2) DATA1, DATA2: the serial numbers SEQ_L and SEQ_H are combined into a serial number with 12 bits, and +1 is needed for each transmission, for example, the last time is 01, and this time is 02

SEQ_L++；

IF(SEQ_L＝＝0)

{

SEQ_H++；

}

DATA1＝SEQ_L；

The specific encryption algorithm is the encryption byte (PULSE) algorithm:

pulse= (char) (seq_l+0x6b); the process is dynamic encryption, wherein SEQ_L is serial number, data transmitted each time is dynamically changed, and the first round of encryption of the PULSE can be completed by performing or last fixed byte 0X6B through the changed value.

Pulse= (char) (PULSE 0X 54); and carrying out exclusive OR on the encrypted PULSE of the previous round for a fixed byte, and carrying out encryption of the second round on the PULSE.

Pulse= (char) (pulse+0x19); based on the encryption of the second round, in order to improve the encryption performance, the encryption key of the second round is added with another fixed byte to carry out the encryption of the third round.

Pulse= (char) (PULSE 0X 25); based on the encryption of the third round, in order to improve the encryption performance, the encryption key of the third round is exclusive-ored with another fixed byte to carry out the encryption of the fourth round.

Pulse= (char) (pulse+ (seq_h &0X 0F)); in the fifth round of encryption, the low four-bit data in the high byte of the serial number is extracted and added with the key of the fourth round, so as to calculate a new key.

Pulse= (char) (PULSE 0X 6B); in the sixth round of encryption, the data of the fifth round is xored again by one byte.

Pulse= (char) (pulse+0x3b); in the seventh round of encryption, a fixed byte is added to the key of the six rounds.

Pulse= (char) (PULSE 0X 3A); in the eighth round of encryption, the keys of the seven rounds are exclusive-ored by one fixed byte.

Pulse= (char) (PULSE &0X 7F); in the ninth round of encryption, the keys of the eight rounds are exclusive-ored by one fixed byte.

In this embodiment, after the calculation of the nine rounds of encryption algorithm is completed, the last seven-bit data of the key is finally taken out to obtain the final key. Through the multiple rounds of calculation, the security of the secret key is ensured. In addition, the final value of the key in the algorithm is closely related to the dynamic serial number, the encryption calculation algorithm and a single fixed byte in each round of algorithm. The final decryption key cannot be obtained when the round of algorithm, the encrypted bytes of the round, and the dynamic serial number cannot be obtained are not clear.

(3) DATA2= (SEQ_H &0X 0F) 0X10+Status1 (without encryption)

(4)DATA3＝Status2+PULSE

(5)DATA4＝Status3+PULSE

(6)DATA5＝Status4+PULSE

(7) DATA 6=status 5 (not encrypted)

(8)DATA7＝Status6+PULSE

(9)DATA8＝DATA0 xor DATA1 xor DATA2 xor DATA3 xor DATA4 xor DATA5 xor DATA6 xor DATA7

In this embodiment, the data in the communication protocol is used by intersecting plaintext and ciphertext, where the plaintext facilitates the identification and filtering of devices in the system, and the ciphertext is encrypted data, so as to protect key data in the driving process and improve data security and data confidentiality.

Further, the PULSE in the encryption algorithm is an encryption key, the serial number seq_l of the data sent by the tire pressure module is changed (increased by itself) each time, and the serial number is plaintext data. Therefore, the vehicle-mounted display module can calculate the encryption key PULSE through the plain text data of the serial number and the encryption algorithm in the embodiment. The key PULSE in the encryption algorithm is changed along with the change of the serial number, so the encryption algorithm of the embodiment has the protection of two layers of encryption mechanisms, one layer is the serial number data which changes at any time, and the other layer is the algorithm of the key PULSE. The key PULSE is encrypted by 1 time of dynamic key and 8 times of fixed key, and the process is the calculation process of the encryption algorithm formula.

Further, after the final decryption key PULSE is obtained, it is very convenient to decrypt the encrypted data. For example, in the process that the tire pressure monitoring module encrypts the DATA3 through the encryption algorithm described above, the vehicle-mounted display module receives encrypted DATA of the DATA3, which is a specific value that cannot be known, and in order to analyze the unencrypted DATA of the DATA3, the vehicle-mounted display module needs to reversely push out the PULSE through the algorithm of the embodiment, and after calculating the PULSE, the Status 2=data3-PULSE can obtain the decrypted DATA of the Status 2. According to the decryption concept described above, each encrypted byte can restore the original unencrypted data by the now calculated PULSE. It is particularly noted that the PULSEs are time-efficient, as are the PULSEs after the running number of the next frame of data.

Further, the present embodiment also uses the check value to improve the DATA reliability, and the process of DATA 8=data 0 xor DATA1 xor DATA2 xor DATA3 xor DATA4 xor DATA5 xor DATA6 xor DATA7 is to exclusive-or the DATA (both encrypted and non-encrypted are included) received by the meter to calculate the check value. If the calculated check value is consistent with the DATA8, the DATA transmitted by the Bluetooth module of the round is normal, and the vehicle-mounted display module can decrypt the DATA, so that the reliability of wireless DATA transmission is improved.

In the embodiment, bluetooth is adopted as a carrier for tire pressure data communication, and the frequency band of 2.4GHz has stronger anti-interference capability than the traditional 433MHz or 315 MHz. Meanwhile, the master-slave switching of the second BLE Bluetooth module corresponding to the vehicle-mounted display module is realized by adopting a time division multiplexing technology, so that one vehicle Bluetooth (the second BLE Bluetooth module) can be connected with a plurality of Bluetooth modules such as the tire pressure monitoring module and the mobile APP in a master-slave mode, a new Bluetooth receiving module is not required, and the hardware realization cost is reduced.

Further, the vehicle-mounted display module and the tire pressure monitoring module in the embodiment establish master-slave connection, duplex communication can be achieved, bidirectional transmission of point-to-point data is achieved, an encryption algorithm is used for key data, and therefore safety of data communication is improved.

In a possible embodiment, the mobile APP module is further configured to send a tire pressure matching instruction to the tire pressure monitoring module through a preset communication protocol, so that the tire pressure monitoring module returns matching information corresponding to the matching instruction, where the matching information includes a MAC address and a module position of the tire pressure monitoring module.

Further, referring to fig. 8, fig. 8 is a flow chart of the bluetooth tire pressure monitoring module provided by the invention bound with a vehicle through a mobile phone APP, and the main stream bluetooth tire pressure module in the current market all needs to trigger the tire pressure module to broadcast data outwards through inflation and deflation of a tire, so that the binding of the tire pressure monitoring module and the mobile phone is performed. Compared with the mode of matching and binding the tire pressure monitoring module by the main flow inflation and deflation in the current market, the matching and binding method in the embodiment is more convenient and efficient, and can be completed by one person without the common operation of multiple persons. In this embodiment, a master-slave connection is established between the corresponding mobile phone APP and the installed tire pressure monitoring module in advance, and communication is performed through a predetermined communication protocol. The mobile phone APP transmits a tire pressure matching instruction to the tire pressure monitoring module, and the tire pressure module returns TVP (T is the temperature value of the tire pressure monitoring module, V is the voltage value of the tire pressure monitoring module, and P is the air pressure value of the tire pressure monitoring module) data with matching information after receiving the instruction. Because after any one of the tire pressure monitoring modules is mounted on the wheels, the pairing zone bit in the data returned by the tire pressure monitoring module after receiving the APP matching instruction can be marked, and in addition, the P (tire pressure) value in the TVP value can be changed greatly. According to the two changes, the MAC address of the tire pressure monitoring module mounted on the wheel and the position (whether the front wheel or the rear wheel) of the tire pressure monitoring module can be recorded rapidly through the mobile phone APP. After the rapid matching and recording of the front wheel and the rear wheel are completed, the mobile phone APP can be connected with the vehicle-mounted display module, and the matched and recorded data are synchronized to the vehicle system.

Further, the present embodiment includes a flow of directly pairing and binding the vehicle-mounted display module and the tire pressure monitoring module, referring to fig. 9, fig. 9 is a flow chart of directly pairing the bluetooth tire pressure monitoring module and the vehicle machine provided by the present invention, and it is first required to ensure that the tire pressure monitoring module is in a parking mode. The tire pressure monitoring module may be put into a pairing mode at this time by radio frequency triggering or charging and discharging the tire. The tire pressure monitoring module continuously transmits a pairing information frame for a plurality of times after entering a pairing mode, the instrument enters an interface for binding the tire pressure through key operation, and an instruction is issued on the interface to enable Bluetooth of the vehicle-mounted display module to scan and receive Bluetooth tire pressure data. And after judging the UUID, the shortname and the status bit data, correlating the mac address meeting the preset specification with the tire information of the vehicle.

In a possible embodiment, referring to fig. 10, fig. 10 is a flow chart of analyzing tire pressure data provided by the present invention, after a vehicle system is powered on, if the vehicle system is a version with a bluetooth tire pressure monitoring module, it is determined whether the MAC addresses of the front and rear bluetooth tire pressure modules are stored and bound in the vehicle display module, and if not, the vehicle display module pops up a prompt box to remind a user to bind the MAC addresses. If the vehicle-mounted display module is stored and bound, protocol analysis and display are carried out after the data of the appointed module are received in the process of establishing master-slave connection between the vehicle machine and the Bluetooth tire pressure module.

In this embodiment, the tire pressure monitoring module can establish master-slave connection with the mobile phone APP to the bluetooth tire pressure module MAC address is recorded fast, and then can realize that bluetooth tire pressure module front and back wheel is simple, quick, high-efficient matches.

Further, the tire pressure monitoring module can also establish master-slave connection with a second BLE Bluetooth module corresponding to the vehicle-mounted display module, rather than a broadcasting mode, double-ended data encryption communication is realized, and therefore data confidentiality and safety are improved.

Further, after the vehicle-mounted display module is bound with the tire pressure monitoring module, the vehicle-mounted display module can be directly connected and communicated with the tire pressure monitoring module to acquire data after checking the tire pressure information, and a mobile phone APP is not needed to be relied on, so that data transmission nodes are reduced, and the reliability of data transmission is improved.

Referring to fig. 11, fig. 11 is a flowchart of a tire pressure monitoring method for a two-wheeled vehicle according to an embodiment of the present invention, and as shown in fig. 11, a tire pressure monitoring method for a two-wheeled vehicle includes:

step S100: the tire pressure detection module monitors the states of the two tires, and sends encrypted monitoring ciphertext to the second BLE Bluetooth module in a slave mode through the first BLE Bluetooth module;

Step S200: the second BLE Bluetooth module receives the monitoring ciphertext sent by the first BLE Bluetooth module in a main mode and sends the monitoring ciphertext to a vehicle-mounted display module;

step S300: the vehicle-mounted display module decrypts the monitoring ciphertext, processes the decrypted monitoring ciphertext to obtain a monitoring result, and sends the monitoring result to the second BLE Bluetooth module;

step S400: the second BLE Bluetooth module sends the received monitoring result to a third BLE Bluetooth module in a slave mode;

step S500: and the third BLE Bluetooth module sends the received monitoring result to the mobile APP module in a main mode, so that the mobile APP module displays the monitoring result in real time.

It can be understood that the tire pressure monitoring method applied to the two-wheeled vehicle provided by the present invention corresponds to the tire pressure monitoring system applied to the two-wheeled vehicle provided in the foregoing embodiments, and the related technical features applied to the tire pressure monitoring method of the two-wheeled vehicle may refer to the related technical features applied to the tire pressure monitoring system of the two-wheeled vehicle, which are not described herein again.

Referring to fig. 12, fig. 12 is a schematic diagram of an embodiment of an electronic device according to an embodiment of the invention. As shown in fig. 12, an embodiment of the present invention provides an electronic device including a memory 1310, a processor 1320, and a computer program 1311 stored on the memory 1310 and executable on the processor 1320, the processor 1320 implementing the following steps when executing the computer program 1311:

The tire pressure detection module monitors the states of the two tires, and sends encrypted monitoring ciphertext to the second BLE Bluetooth module in a slave mode through the first BLE Bluetooth module; the second BLE Bluetooth module receives the monitoring ciphertext sent by the first BLE Bluetooth module in a main mode and sends the monitoring ciphertext to a vehicle-mounted display module; the vehicle-mounted display module decrypts the monitoring ciphertext, processes the decrypted monitoring ciphertext to obtain a monitoring result, and sends the monitoring result to the second BLE Bluetooth module; the second BLE Bluetooth module sends the received monitoring result to a third BLE Bluetooth module in a slave mode; the third BLE Bluetooth module sends the received monitoring result to the mobile APP module in a main mode, so that the mobile APP module displays the monitoring result in real time.

Referring to fig. 13, fig. 13 is a schematic diagram of an embodiment of a computer readable storage medium according to the present invention. As shown in fig. 13, the present embodiment provides a computer-readable storage medium 1400 on which is stored a computer program 1411, which computer program 1411, when executed by a processor, implements the steps of:

The embodiment of the invention provides a tire pressure monitoring system and a method applied to a two-wheeled vehicle, wherein the system comprises a tire pressure monitoring module, a first BLE Bluetooth module, a vehicle-mounted display module, a second BLE Bluetooth module, a third BLE Bluetooth module and a mobile APP module; the tire pressure monitoring module is used for monitoring the states of the two tires, and sending encrypted monitoring ciphertext to the second BLE Bluetooth module in a slave mode through the first BLE Bluetooth module; the second BLE bluetooth module is configured to receive, in a master mode, the monitoring ciphertext sent by the first BLE bluetooth module, and send, in a slave mode, a monitoring result corresponding to the received monitoring ciphertext to the third BLE bluetooth module; the vehicle-mounted display module is used for decrypting the received monitoring ciphertext, processing the decrypted monitoring ciphertext to obtain a monitoring result, and sending the monitoring result to the second BLE Bluetooth module; the third BLE bluetooth module is configured to send the received monitoring result to the mobile APP module in a master mode; the mobile APP module is used for displaying the monitoring result in real time. According to the invention, bluetooth is used as a communication carrier of tire pressure data, the frequency band of 2.4GHz has stronger anti-interference capability than that of the traditional 433MHz or 315MHz, meanwhile, the second BLE Bluetooth module of the vehicle machine and the first BLE Bluetooth module of the tire are connected in a master-slave mode instead of broadcasting mode, duplex communication can be realized, point-to-point data bidirectional transmission can be realized, meanwhile, the safety of data communication is improved by using an encryption algorithm for key data, and the safety in the data transmission process of the two-wheel vehicle is further improved.

In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A tire pressure monitoring system for a two-wheeled vehicle, the system comprising: the tire pressure monitoring system comprises a tire pressure monitoring module, a first BLE Bluetooth module, a vehicle-mounted display module, a second BLE Bluetooth module, a third BLE Bluetooth module and a mobile APP module;

2. The tire pressure monitoring system according to claim 1, wherein the mobile APP module is further configured to send a tire pressure matching instruction to the tire pressure monitoring module through a preset communication protocol, so that the tire pressure monitoring module returns matching information corresponding to the matching instruction, where the matching information includes a MAC address and a module position of the tire pressure monitoring module.

3. The tire pressure monitoring system according to claim 1, wherein the tire pressure monitoring module comprises: a front tire pressure monitoring module and a rear tire pressure monitoring module;

4. The tire pressure monitoring system for the two-wheeled vehicle according to claim 1, wherein the tire pressure monitoring module comprises an air pressure sensor, a temperature sensor, a motion sensor, a voltage sensor and a main control MCU, and the main control MCU is respectively connected with the air pressure sensor, the temperature sensor, the motion sensor and the voltage sensor;

5. The tire pressure monitoring system for a two-wheeled vehicle according to claim 4, wherein the storage mode is entered when the master MCU monitors that the air pressure values of the two tires are lower than a preset air pressure threshold value P0 through the air pressure sensor, and the master MCU wakes up the air pressure sensor at a preset interval time T0 to monitor the tire pressures of the two tires while the master MCU turns off the temperature sensor, the motion sensor and the voltage sensor.

6. The tire pressure monitoring system according to claim 4, wherein the parking mode is entered when the master control MCU monitors that either one of the two tires is greater than a preset air pressure threshold value P0 through the air pressure sensor, the master control MCU controls the tire pressure monitoring module to monitor an air pressure variation difference value, a temperature value and a voltage value of the two tires at a preset interval time T1, and enters the alarm mode when the air pressure variation difference value is greater than a preset air pressure variation difference value δ, the temperature value is greater than a preset tire temperature threshold value δ1 or the voltage value is lower than a preset voltage threshold value δ2.

7. The tire pressure monitoring system according to claim 4, wherein the master control MCU enters the pre-parking mode when detecting that the parking duration of the two-wheeled vehicle reaches a preset parking threshold T through the motion sensor, and the master control MCU controls the tire pressure monitoring module to transmit a current air pressure value, an air pressure variation difference value, a temperature value and a voltage value of the two-wheeled vehicle to the first BLE bluetooth module at a preset interval time T2, and enters the alarm mode when the air pressure variation difference value is greater than a preset air pressure variation difference value δ, the temperature value is higher than a preset tire temperature threshold δ1 or the voltage value is lower than a preset voltage threshold δ2.

8. The tire pressure monitoring system according to claim 4, wherein the main control MCU enters the driving mode when detecting that the two-wheeled vehicle is in a moving state through the motion sensor, controls the tire pressure monitoring module to transmit a current air pressure value, an air pressure variation difference value, a temperature value and a voltage value of the two-wheeled vehicle to the first BLE bluetooth module at a preset interval time T3, and enters the alarm mode when the air pressure variation difference value is greater than a preset air pressure variation difference value δ, the temperature value is higher than a preset tire temperature threshold δ1 or the voltage value is lower than a preset voltage threshold δ2.

9. The tire pressure monitoring system according to any one of claims 6 to 8, wherein when the alarm mode is entered, the main control MCU controls the tire pressure monitoring module to detect the air pressure variation difference value, the temperature value and the voltage value of the two tires for a preset number of times at a preset interval time T4, sends the detection result to the first BLE bluetooth module, and when the detection results for the preset number of times are all determined to be normal, the main control MCU cancels the alarm mode.

10. A tire pressure monitoring method applied to a two-wheeled vehicle, the method comprising: