Online upgrade method and system for tire pressure sensor, and vehicle

Abstract

The present application provides an online upgrade method and system for tire pressure sensors, and a vehicle. The method comprises: acquiring from a cloud server an upgrade package used for upgrading tire pressure sensors; acquiring an upgrade authorization instruction from a user; performing identity authentication on the tire pressure sensors; when the identity authentication succeeds, sending the upgrade package to the tire pressure sensors on the basis of the upgrade authorization instruction; and sending an activation instruction to the tire pressure sensors, so as to activate the upgrade package for online synchronous upgrade. The present application achieves online synchronous upgrade of tire pressure sensors, ensuring the consistency of firmware versions of tire pressure sensors; using an optimized broadcast policy greatly improves power management efficiency, reduces usage power consumption of tire pressure sensors, and prolongs the service life; implementing strict identity authentication improves system security; and many inconveniences caused by traditional offline upgrade modes are overcome, thus significantly improving upgrade efficiency and stability.

Description

Online upgrading method and system of tire pressure sensor, vehicle TECHNICAL FIELD

[0001] The application belongs to the technical field of online upgrading, and relates to an online upgrading method and system of a tire pressure sensor and a vehicle. BACKGROUND

[0002] A tire pressure monitoring system (TPMS) is an important part of a modern vehicle safety system. It can monitor the tire pressure and temperature in real time and issue a warning to the driver in abnormal conditions, thereby ensuring driving safety.

[0003] However, since the tire pressure sensor is usually installed inside the wheel and needs to communicate with the vehicle network wirelessly, it undoubtedly brings certain challenges to the firmware upgrade. For example, the instability of wireless connection makes the tire pressure sensor prone to connection interruption, data loss and other conditions during firmware upgrade, thereby causing upgrade failure or unstable performance of the upgraded tire pressure sensor. In addition, considering that the tire pressure sensor needs to work for a long time and maintain a low power consumption state to prolong the service life, the traditional upgrade method often requires the tire pressure sensor to actively scan or continuously broadcast, which undoubtedly increases the power consumption of the sensor and shortens its service life.

[0004] Current online upgrading technology of tire pressure sensors also has many deficiencies in power consumption control and synchronous upgrading. For example, a handheld tool or a vehicle-mounted low-frequency tool is needed to send a low-frequency wake-up message to wake up the tire pressure sensor to start the connectable upgrade broadcast, which increases the cost. In addition, the tire pressure sensor sends a connectable broadcast in real time, which causes the attenuation of battery life and also causes certain interference risk to the real-time collection and broadcast transmission of tire pressure data. In addition, the existing technology lacks an effective mechanism to ensure that multiple tire pressure sensors are upgraded simultaneously, which may cause inconsistent firmware versions among tire pressure sensors, thereby causing confusion in tire pressure data protocols and ultimately affecting driving safety. SUMMARY

[0005] The application aims to provide an online upgrading method and system of a tire pressure sensor and a vehicle, which can improve the stability and safety of the online upgrading process of the tire pressure sensor and prolong the service life of the tire pressure sensor.

[0006] In a first aspect, the application provides an online upgrading method of a tire pressure sensor, applied to a vehicle-mounted system of a vehicle, each tire of the vehicle being fixedly provided with a tire pressure sensor, the vehicle-mounted system being in Bluetooth connection with the tire pressure sensor and in remote connection with a cloud server; the method comprising: obtaining an upgrading package for upgrading the tire pressure sensor from the cloud server; obtaining an upgrading authorization instruction of a user; performing identity authentication on the tire pressure sensor; after successful identity authentication, sending the upgrading package to the tire pressure sensor based on the upgrading authorization instruction; and sending an activation instruction to the tire pressure sensor to activate the upgrading package for online synchronous upgrading.

[0007] In an implementation form of the first aspect, obtaining the upgrading package for upgrading the tire pressure sensor from the cloud server comprises:

[0008] scanning a beacon protocol broadcast emitted by the tire pressure sensor; the beacon protocol broadcast is emitted by the tire pressure sensor when vehicle movement is monitored, and comprises a pre-upgraded version label, tire pressure information of the vehicle, and temperature information of the tire;

[0009] uploading the pre-upgraded version label to the cloud server; and determining, by the cloud server, the upgrading package matched with the pre-upgraded version label through comparison;

[0010] downloading the upgrading package from the cloud server.

[0011] In an implementation form of the first aspect, obtaining the upgrading authorization instruction of the user comprises:

[0012] sending an upgrading clause to the user; the upgrading clause comprises a predicted upgrading time and a vehicle locking time during upgrading;

[0013] receiving confirmation information of the user on the upgrading clause;

[0014] generating the upgrading authorization instruction based on the confirmation information.

[0015] In an implementation form of the first aspect, performing identity authentication on the tire pressure sensor comprises:

[0016] scanning a timing long connectable upgrading broadcast emitted by the tire pressure sensor; the upgrading broadcast is emitted by the tire pressure sensor in an emission window started after vehicle stop is monitored;

[0017] obtaining a random number for security authentication from a message of the upgrading broadcast;

[0018] encrypting the random number to obtain an encrypted random number;

[0019] adding the encrypted random number to a data message of a signature protocol;

[0020] establishing a Bluetooth connection with the tire pressure sensor;

[0021] sending the data packet to the tire pressure sensor for signature verification within a preset time slice;

[0022] If the signature verification is successful, it indicates that the identity authentication is successful; otherwise, it indicates that the identity authentication fails.

[0023] In an implementation form of the first aspect, the identity authentication of the tire pressure sensor comprises:

[0024] establishing a Bluetooth connection with the tire pressure sensor;

[0025] receiving a data packet including a random number packet and a corresponding signature request sent by the tire pressure sensor;

[0026] signing the random number packet based on the signature request to obtain a signed random number packet;

[0027] sending the signed random number packet to the tire pressure sensor for signature verification;

[0028] If the signature verification is successful, it indicates that the identity authentication is successful; otherwise, it indicates that the identity authentication fails.

[0029] In an implementation form of the first aspect, further comprising:

[0030] scanning a version broadcast of a timing length emitted by the tire pressure sensor; the version broadcast is emitted by the tire pressure sensor after receiving an activation instruction and being activated, and includes a pre-upgrade version label and a current running version label;

[0031] comparing the current running version label and the pre-upgrade version label;

[0032] If the versions are the same, it is determined that the tire pressure sensor is successfully upgraded;

[0033] If the versions are different, it is determined that the tire pressure sensor fails to be upgraded.

[0034] In an implementation form of the first aspect, further comprising:

[0035] If no upgrade package to be activated in the tire pressure sensor is monitored within the expected upgrade time, a sleep instruction is sent to the tire pressure sensor to control the tire pressure sensor to enter a sleep state;

[0036] If a plurality of tire pressure sensors fail to be upgraded, a rollback instruction is sent to the tire pressure sensors that have been successfully upgraded; the rollback instruction is used to make the tire pressure sensors that have been successfully upgraded return to a version before the upgrade.

[0037] If the upgrade task is interrupted during the transmission of the upgrade package or during the waiting for activating the upgrade package, the interrupted upgrade task is continued at the next upgrade.

[0038] In a second aspect, the application provides an online upgrade system of a tire pressure sensor, comprising: a vehicle-mounted OTA upgrade device, which is remotely connected with a cloud server, and is configured to obtain an upgrade package for upgrading the tire pressure sensor from the cloud server; a vehicle-mounted Bluetooth upgrade device, which is connected with the vehicle-mounted OTA upgrade device through a vehicle network communication, and is connected with the tire pressure sensor through Bluetooth, and is configured to obtain an upgrade authorization instruction of a user; perform identity authentication on the tire pressure sensor; after the identity authentication succeeds, send the upgrade package to the tire pressure sensor based on the upgrade authorization instruction; and send an activation instruction to the tire pressure sensor to activate the upgrade package to perform online synchronous upgrade.

[0039] In a third aspect, the application provides a vehicle, comprising: a plurality of tires fixed with tire pressure sensors; and an online upgrade system of a tire pressure sensor as described above; wherein the tire pressure sensor comprises any one or more of a speed sensor, a temperature sensor and a pressure sensor, each of the tire pressure sensors comprises a Bluetooth radio frequency module; the speed sensor is configured to monitor the motion state of the vehicle; the temperature sensor is configured to monitor the temperature information of the tire; the pressure sensor is configured to monitor the tire pressure information of the vehicle; and the Bluetooth radio frequency module is configured to emit or interrupt a radio frequency broadcast signal according to the motion state of the vehicle.

[0040] In an implementation form of the third aspect, the Bluetooth radio frequency module emits or interrupts the radio frequency broadcast signal according to the motion state of the vehicle, comprising:

[0041] If the motion state of the vehicle is a starting state, a beacon protocol broadcast is started;

[0042] If the motion state of the vehicle is a static state, a timing long connectable upgrade broadcast is started;

[0043] If the motion state of the vehicle is a hibernation state, the radio frequency broadcast is interrupted.

[0044] As described above, the online upgrading method and system of the tire pressure sensor, and the vehicle of the present application can realize online synchronous upgrading of multiple tire pressure sensors through remote and efficient online upgrading, ensure consistency of the tire pressure sensor firmware version, greatly improve power management efficiency through the use of an optimized broadcast strategy, reduce device power consumption, and prolong the service life of the tire pressure sensor, avoid access of unauthorized or malicious devices through strict identity authentication, improve the security of the vehicle system, overcome the many inconveniences brought by the traditional offline upgrading method, save a lot of time and effort for users, reduce after-sales service costs, and significantly improve upgrading efficiency and stability. BRIEF DESCRIPTION OF DRAWINGS

[0045] FIG. 1 shows a structural schematic diagram of a vehicle-mounted system in an embodiment.

[0046] FIG. 2 shows a structural schematic diagram of a vehicle-mounted system in another embodiment.

[0047] FIG. 3 shows a flowchart of an online upgrading method of a tire pressure sensor of the present application in an embodiment.

[0048] FIG. 4 shows a structural schematic diagram of an online upgrading system of a tire pressure sensor of the present application in an embodiment.

[0049] FIG. 5 shows a structural schematic diagram of a vehicle of the present application in an embodiment.

[0050] FIG. 6 shows a structural schematic diagram of a tire pressure sensor of the present application in an embodiment. DETAILED DESCRIPTION

[0051] The implementation manner of the present application is described below through specific, concrete examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present specification. The present application can also be implemented or applied through other different concrete implementation manners, and each detail in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0052] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and only the components related to the present application are shown in the diagrams, not the number, shape, and size of the components when actually implemented. The actual implementation of each component can be a random change in type, number, and proportion, and the layout type of the components can also be more complex.

[0053] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0054] This application provides a method, system, and vehicle for online upgrades of tire pressure sensors. It utilizes Bluetooth Low Energy technology to achieve remote online upgrades of the tire pressure sensors while considering low power consumption to ensure stable sensor operation. Furthermore, by employing a simultaneous upgrade and downgrade strategy, it avoids version inconsistencies caused by upgrade failures, thereby improving vehicle safety.

[0055] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0056] This application provides an online upgrade method for tire pressure sensors, applied to the vehicle's onboard system, wherein each tire of the vehicle is fixedly equipped with a tire pressure sensor.

[0057] Please refer to Figure 1, which shows a structural schematic diagram of an embodiment of the in-vehicle system. As shown in Figure 1, the in-vehicle system is connected to the tire pressure sensor via Bluetooth and remotely connected to a cloud server.

[0058] Please refer to Figure 2, which shows a structural schematic diagram of an in-vehicle system according to another embodiment. As shown in Figure 2, the in-vehicle system includes an in-vehicle OTA (Over-the-Air) upgrade device and an in-vehicle Bluetooth upgrade device. The in-vehicle OTA upgrade device is remotely connected to a cloud server, and the in-vehicle Bluetooth upgrade device is connected to the in-vehicle OTA upgrade device via vehicle network communication and is also connected to the tire pressure sensor via Bluetooth.

[0059] The tire pressure sensor described in this application includes any one or more of a speed sensor, a temperature sensor, and a pressure sensor, and each of the tire pressure sensors includes a Bluetooth radio frequency module.

[0060] Specifically, the speed sensor is used to monitor the vehicle's motion status; the temperature sensor is used to monitor the vehicle's temperature information; the pressure sensor is used to monitor the vehicle's tire pressure information; and the Bluetooth radio frequency module is used to transmit or interrupt radio frequency broadcast signals according to the vehicle's motion status.

[0061] Please refer to Figure 3, which shows a flowchart of an embodiment of the online upgrade method for the tire pressure sensor of this application. As shown in Figure 3, the online upgrade method for the tire pressure sensor includes the following steps S100 to S500.

[0062] Step S100: Obtain an upgrade package for upgrading the tire pressure sensor from the cloud server.

[0063] In one embodiment of this application, obtaining an upgrade package for upgrading the tire pressure sensor from the cloud server includes steps S101 to S103.

[0064] Step S101: Scan the beacon protocol broadcast emitted by the tire pressure sensor.

[0065] The beacon protocol broadcast is emitted by the tire pressure sensor when it detects vehicle movement, and includes a pre-upgraded version tag, vehicle tire pressure information, and tire temperature information.

[0066] Specifically, when the vehicle starts, the speed sensor detects vehicle movement and activates the Bluetooth radio frequency module to broadcast the beacon protocol. The in-vehicle Bluetooth upgrade device scans the pre-upgrade version tag in the beacon protocol broadcast and sends it to the in-vehicle OTA upgrade device.

[0067] In this embodiment, the version tag is an identifier that combines software version information and hardware version information. By identifying the version tag, it is possible to quickly determine which sensors require firmware upgrades.

[0068] It is worth noting that in beacon protocol broadcast mode, the Bluetooth function of the tire pressure sensor is generally set to an unconnectable state. This means that the tire pressure sensor cannot receive commands or establish connections with other devices at this time. This implementation method can effectively reduce the energy consumption of the tire pressure sensor, extend its service life, and ensure the timely transmission of critical information.

[0069] Step S102: Upload the pre-upgraded version tag to the cloud server; the cloud server then determines the upgrade package that matches the pre-upgraded version tag by comparison.

[0070] In one embodiment of this application, the in-vehicle OTA upgrade device reports a pre-upgrade version tag to the cloud server. The cloud server, acting as a remote storage and processing platform, upon receiving the pre-upgrade version tag, compares it with existing version information to identify a matching upgrade package. Subsequently, the cloud server marks this upgrade package as an applicable update option and prepares a download link or directly pushes a notification to the in-vehicle OTA upgrade device for subsequent installation.

[0071] Step S103: Download the upgrade package from the cloud server.

[0072] In one embodiment of this application, the vehicle-mounted OTA upgrade device downloads the tire pressure sensor upgrade package from the cloud server and sends it to the vehicle-mounted Bluetooth upgrade system for corresponding update operations.

[0073] Since the vehicle's speed, temperature, and pressure sensors all belong to the same hardware system, firmware upgrades can be synchronized. Therefore, in practical applications, downloading an upgrade package once is sufficient to upgrade all relevant sensors. This approach significantly saves bandwidth and time, simplifies vehicle maintenance processes, and reduces the tedious steps of frequently downloading and upgrading each sensor individually.

[0074] Step S200: Obtain the user's upgrade authorization instruction.

[0075] In one embodiment of this application, obtaining an upgrade authorization instruction from a user includes: sending upgrade terms to the user; the upgrade terms include the estimated upgrade time and the vehicle being locked during the upgrade; receiving confirmation information from the user regarding the upgrade terms; and generating the upgrade authorization instruction based on the confirmation information.

[0076] Specifically, the vehicle-side OTA upgrade system sends upgrade terms to the user, then waits for the user to read and understand the terms. After the user agrees to the upgrade terms, a confirmation message is sent to the vehicle's Bluetooth upgrade system. The vehicle's Bluetooth upgrade system then generates the upgrade authorization command based on the confirmation message. This implementation method ensures the transparency of the upgrade process and the user's explicit acceptance of the upgrade terms, conforming to the standard operating procedures for vehicle software updates.

[0077] Step S300: Authenticate the tire pressure sensor.

[0078] In one embodiment of this application, authenticating the tire pressure sensor includes: scanning a time-limited connectable upgrade broadcast emitted by the tire pressure sensor; the upgrade broadcast is a transmission window opened by the tire pressure sensor after detecting that the vehicle has stopped; obtaining a random number for security authentication from the upgrade broadcast message; encrypting the random number to obtain an encrypted random number; adding the encrypted random number to a signature protocol data packet; establishing a Bluetooth connection with the tire pressure sensor; sending the data packet to the tire pressure sensor within a preset time slice for signature verification; if the signature verification is successful, the authentication is successful; otherwise, the authentication fails.

[0079] Specifically, when the vehicle stops, the speed sensor detects that the vehicle is stationary. For example, if the vehicle is considered stationary after N minutes, the Bluetooth radio frequency module is activated to broadcast a timed, connectable upgrade. The in-vehicle Bluetooth upgrade device initiates a timed scanning task according to the agreed strategy after the vehicle has been parked for N minutes to establish a Bluetooth connection with the tire pressure sensor to be upgraded.

[0080] It should be noted that if the tire pressure sensor enters a periodic sleep mode to save energy, the timed broadcast task can be restarted after the tire pressure sensor is awakened from sleep mode. This implementation method can optimize the power consumption management of the sensor while ensuring timely system updates.

[0081] In another embodiment of this application, the authentication of the tire pressure sensor includes: establishing a Bluetooth connection with the tire pressure sensor; receiving a data packet including a random number message and a corresponding signature request sent by the tire pressure sensor; signing the random number message based on the signature request to obtain a signed random number message; sending the signed random number message to the tire pressure sensor for signature verification; if the signature verification is successful, the authentication is successful; otherwise, the authentication fails.

[0082] It should be noted that, in practical applications, those skilled in the art can flexibly choose the method of authenticating tire pressure sensors, and this application does not impose specific limitations on this.

[0083] In this implementation, strict identity authentication can effectively prevent unauthorized or malicious devices from accessing the system, thereby improving the security of the vehicle system.

[0084] Step S400: After successful identity authentication, the upgrade package is sent to the tire pressure sensor based on the upgrade authorization instruction.

[0085] Each tire pressure sensor also includes a storage unit, such as flash memory, for storing upgrade packages sent by the in-vehicle Bluetooth upgrade device. Once the upgrade package is successfully received by the tire pressure sensor, it enters an activation state. Simultaneously, the storage unit sends a successful reception notification to the connected in-vehicle Bluetooth upgrade device via the Bluetooth radio frequency module. This notification informs the system that the current sensor can be disconnected, the system can move on to the next sensor to be upgraded, and the upgrade package transmission process can continue. This mechanism ensures that multiple sensors can receive the correct version of the upgrade package in an orderly and efficient manner, optimizing the management of the entire upgrade process.

[0086] Step S500: Send an activation command to the tire pressure sensor to activate the upgrade package for online synchronous upgrade.

[0087] In one embodiment of this application, after all sensors have successfully received the upgrade package, the in-vehicle Bluetooth upgrade device will disconnect and reconnect to each sensor to verify the upgrade readiness. In this embodiment, the system only sends an activation command to the tire pressure sensor, thereby triggering a synchronous upgrade, after confirming that each sensor has received the upgrade package to be activated. This method ensures the stability and consistency of the system update, enabling each sensor to reach the expected standby state before activation, thus guaranteeing the successful activation of the new firmware.

[0088] In one embodiment of this application, the online upgrade method for the tire pressure sensor further includes: scanning a version broadcast of a specified duration emitted by the tire pressure sensor; the version broadcast is emitted by the tire pressure sensor after receiving an activation command and being activated, and includes a pre-upgrade version tag and a currently running version tag; comparing the currently running version tag and the pre-upgrade version tag; if the versions are the same, the tire pressure sensor is considered to have been successfully upgraded; if the versions are different, the tire pressure sensor is considered to have failed to upgrade.

[0089] Specifically, after the tire pressure sensor receives the activation command and activates the upgrade package, the Bluetooth radio frequency module sends a version broadcast containing a pre-upgrade version tag and a tag for the currently running version. This version broadcast follows the standard beacon broadcast mechanism. Upon receiving the version broadcast, the in-vehicle Bluetooth upgrade device compares these two version tags to verify the upgrade status. If the tag content matches, it indicates that the corresponding tire pressure sensor has been successfully upgraded to the predetermined new version. Conversely, if the two tags do not match, it means that the upgrade process failed to execute as expected or an error occurred during data transmission, thus indicating that the upgrade was unsuccessful.

[0090] In one embodiment of this application, if no upgrade package to be activated is detected in the tire pressure sensor within the expected upgrade time, a sleep command is sent to the tire pressure sensor to control the tire pressure sensor to enter a sleep state.

[0091] Specifically, the presence of an upgrade package to be activated can be determined from the upgrade broadcast message. For example, if the upgrade broadcast message does not contain a pre-upgrade version tag, it can be inferred that there is no upgrade package to be activated in the current tire pressure sensor.

[0092] If the vehicle system does not detect a new upgrade package available for activation from the tire pressure sensor within the preset upgrade time, the vehicle's Bluetooth upgrade device will send a sleep command to the tire pressure sensor. This sleep command puts the tire pressure sensor into power-saving or standby mode, stopping unnecessary data transmission and resource consumption until a new upgrade request is received or the system restarts. This optimizes battery life and improves system efficiency.

[0093] In one embodiment of this application, if a plurality of the tire pressure sensors fail to upgrade, a rollback command is sent to the tire pressure sensors that have been successfully upgraded; the rollback command is used to revert the successfully upgraded tire pressure sensors to the version before the upgrade.

[0094] During the synchronous upgrade of multiple tire pressure sensors, if some sensors fail to upgrade, a rollback mechanism will be implemented to ensure the overall stability and consistency of the system. For sensors that have been successfully updated, the system will send a rollback command to restore their firmware version to its state before the upgrade. This implementation effectively prevents the malfunction of some sensors from affecting the normal operation of the overall system, ensuring the integrity and stability of system functions.

[0095] In one embodiment of this application, if the upgrade task is interrupted during the transmission of the upgrade package, or if the upgrade task is interrupted while waiting for the activation of the upgrade package, the interrupted upgrade task will continue during the next upgrade.

[0096] To ensure that the downloaded upgrade package is not corrupted during transmission, a common verification method can be used to verify the integrity of the data packet. If the data packet is found to be incomplete or modified during verification, a retransmission of the upgrade package can be requested to ensure the continuity and integrity of the upgrade process.

[0097] In one embodiment of this application, the tire pressure sensor achieves a safety upgrade by implementing an A / B dual-zone strategy.

[0098] Specifically, assuming partition A is currently running, it is defined as the active partition. When a firmware update is needed, the new upgrade package will be stored in the inactive partition B. After partition A is successfully upgraded, the system will switch to partition B, or the data in partition B will be directly migrated to partition A, awaiting the next upgrade.

[0099] This implementation significantly reduces the risk of upgrade task interruption and improves the overall reliability and stability of the system.

[0100] It should be noted that the scope of protection of the online upgrade method for tire pressure sensors described in this application is not limited to the order of steps listed in this embodiment. Any solution implemented by adding, subtracting, or replacing steps in the prior art based on the principles of this application is included within the scope of protection of this application.

[0101] Please refer to Figure 4, which shows a schematic diagram of the tire pressure sensor online upgrade system of this application in one embodiment. As shown in Figure 4, this application provides an online upgrade system for a tire pressure sensor, including an in-vehicle OTA upgrade device and an in-vehicle Bluetooth upgrade device.

[0102] In one embodiment of this application, the vehicle-mounted OTA upgrade device is remotely connected to a cloud server to obtain an upgrade package for upgrading the tire pressure sensor from the cloud server.

[0103] The in-vehicle OTA upgrade device can run on the vehicle's smart devices and, by establishing a stable remote connection with a cloud server, allows the vehicle to periodically access and download the latest upgrade package.

[0104] In one embodiment of this application, the in-vehicle Bluetooth upgrade device is connected to the in-vehicle OTA upgrade device via a vehicle network communication connection and to the tire pressure sensor via Bluetooth, for obtaining the user's upgrade authorization command; authenticating the tire pressure sensor; after successful authentication, sending the upgrade package to the tire pressure sensor based on the upgrade authorization command; and sending an activation command to the tire pressure sensor to activate the upgrade package for online synchronous upgrade.

[0105] In-vehicle Bluetooth upgrade devices can be installed as standalone devices in the vehicle or integrated into existing electronic control units (ECUs), such as entertainment systems, navigation systems, or vehicle information systems.

[0106] It should be noted that the structure and principle of the vehicle OTA upgrade device and the vehicle Bluetooth upgrade device correspond one-to-one with the steps in the above-mentioned online upgrade method for tire pressure sensors, so they will not be repeated here.

[0107] The online upgrade system for tire pressure sensors provided in this application can implement the online upgrade method for tire pressure sensors described in this application. However, the implementation apparatus for the online upgrade method for tire pressure sensors described in this application includes, but is not limited to, the structure of the online upgrade system for tire pressure sensors listed in this embodiment. Any structural modifications and substitutions of the prior art made based on the principles of this application are included within the protection scope of this application.

[0108] Please refer to Figure 5, which shows a structural schematic diagram of a vehicle according to an embodiment of this application. This application provides a vehicle including: a plurality of tires fixedly equipped with tire pressure sensors; and an online upgrade system for the tire pressure sensors as described above.

[0109] As shown in Figure 5, tire pressure sensor RL is installed on tire 1, tire pressure sensor FL is installed on tire 2, tire pressure sensor RR is installed on tire 3, and tire pressure sensor FR is installed on tire 4.

[0110] Please refer to Figure 6, which shows a schematic diagram of the structure of a tire pressure sensor according to an embodiment of this application. As shown in Figure 6, the tire pressure sensor includes any one or more of a speed sensor, a temperature sensor, and a pressure sensor, and each tire pressure sensor includes a Bluetooth radio frequency module.

[0111] Specifically, the speed sensor is used to monitor the vehicle's motion status; the temperature sensor is used to monitor the vehicle's temperature information; the pressure sensor is used to monitor the vehicle's tire pressure information; and the Bluetooth radio frequency module is used to transmit or interrupt radio frequency broadcast signals according to the vehicle's motion status.

[0112] In one embodiment of this application, the Bluetooth radio frequency module is a low-power radio frequency module.

[0113] In one embodiment of this application, to reduce power consumption, the Bluetooth radio frequency module can implement an optimized broadcast strategy. For example, based on the upgrade time obtained from pre-testing, a maximum continuous broadcast duration, such as 10 minutes, can be set, supplemented by a slow broadcast method, i.e., broadcasting once every 1 minute. This strategy effectively optimizes energy management and helps extend the lifespan of the tire pressure sensor.

[0114] In one embodiment of this application, the Bluetooth radio frequency module transmits or interrupts radio frequency broadcast signals according to the vehicle's motion state, including:

[0115] (1) If the vehicle is in a starting state, then start broadcasting the beacon protocol;

[0116] (2) If the vehicle is stationary, then activate the connectable upgrade broadcast with a transmission time period.

[0117] (3) If the vehicle is in a dormant state, the radio frequency broadcast is interrupted.

[0118] In summary, the online upgrade method and system for tire pressure sensors of this application enable remote and efficient online synchronous upgrades of multiple tire pressure sensors, ensuring the consistency of tire pressure sensor firmware versions. The optimized broadcast strategy significantly improves power management efficiency, reduces device power consumption, and extends the lifespan of the tire pressure sensors. Strict identity authentication prevents unauthorized or malicious devices from accessing the system, enhancing vehicle system security. It overcomes many inconveniences associated with traditional offline upgrade methods, saving users significant time and effort, reducing after-sales service costs, and significantly improving upgrade efficiency and stability.

[0119] In the embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, or methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules / units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or units may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of apparatuses or modules or units may be electrical, mechanical, or other forms.

[0120] The modules / units described as separate components may or may not be physically separate. The components shown as modules / units may or may not be physical modules; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules / units can be selected to achieve the objectives of the embodiments of this application, depending on actual needs. For example, the functional modules / units in the various embodiments of this application may be integrated into one processing module, or each module / unit may exist physically separately, or two or more modules / units may be integrated into one module / unit.

[0121] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0122] The descriptions of the processes or structures corresponding to the above figures each have their own emphasis. For parts of a process or structure that are not described in detail, please refer to the relevant descriptions of other processes or structures.

[0123] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. An online upgrade method of a tire pressure sensor, characterized by, A vehicle-mounted system applied to a vehicle, each tire of the vehicle is fixedly provided with a tire pressure sensor, the vehicle-mounted system is connected with the tire pressure sensor through Bluetooth and is remotely connected with a cloud server; the method comprises: obtaining an upgrade package for upgrading the tire pressure sensor from the cloud server; obtaining an upgrade authorization instruction of a user; carrying out identity authentication on the tire pressure sensor; after the identity authentication succeeds, sending the upgrade package to the tire pressure sensor based on the upgrade authorization instruction; sending an activation instruction to the tire pressure sensor to activate the upgrade package to perform online synchronous upgrading.

2. The method of claim 1, wherein, The step of obtaining an upgrade package for upgrading the tire pressure sensor from the cloud server comprises: scanning a beacon protocol broadcast emitted by the tire pressure sensor; the beacon protocol broadcast is emitted by the tire pressure sensor when the vehicle is monitored to move, and comprises a pre-upgrade version label, tire pressure information of the vehicle and temperature information of the tire; uploading the pre-upgrade version label to the cloud server; the cloud server determines the upgrade package matched with the pre-upgrade version label through comparison; downloading the upgrade package from the cloud server.

3. The method of claim 1, wherein, The step of obtaining an upgrade authorization instruction of a user comprises: sending an upgrade clause to the user; the upgrade clause comprises a predicted upgrade time and a vehicle locking time during upgrading; receiving confirmation information of the user on the upgrade clause; generating the upgrade authorization instruction based on the confirmation information.

4. The method of claim 1, wherein, The step of carrying out identity authentication on the tire pressure sensor comprises: scanning a long-time connectable upgrade broadcast emitted by the tire pressure sensor; the upgrade broadcast is emitted by the tire pressure sensor in a starting window after the vehicle is monitored to stop; obtaining a random number for security authentication from a message of the upgrade broadcast; encrypting the random number to obtain an encrypted random number; adding the encrypted random number to a data message of a signature protocol; establishing a Bluetooth connection with the tire pressure sensor; sending the data message to the tire pressure sensor within a preset time slice to perform signature verification; if the signature verification succeeds, it indicates that the identity authentication succeeds; otherwise, it indicates that the identity authentication fails.

5. The method of claim 1, wherein, The step of carrying out identity authentication on the tire pressure sensor comprises: establishing a Bluetooth connection with the tire pressure sensor; receiving a data packet comprising a random number message and a corresponding signature request sent by the tire pressure sensor; signing the random number message based on the signature request to obtain a signed random number message; sending the signed random number message to the tire pressure sensor to perform signature verification; if the signature verification succeeds, it indicates that the identity authentication succeeds; otherwise, it indicates that the identity authentication fails.

6. The method of claim 1, wherein, Further comprising: scanning a long-time version broadcast emitted by the tire pressure sensor; the version broadcast is emitted by the tire pressure sensor after receiving an activation instruction and being activated, and comprises a pre-upgrade version label and a current running version label; comparing the current running version label and the pre-upgrade version label; if the versions are the same, it is determined that the tire pressure sensor upgrades successfully; if the versions are different, it is determined that the tire pressure sensor upgrades unsuccessfully.

7. The method of claim 1, wherein, Further comprising: If no upgrade package to be activated is monitored in the expected upgrade time, a hibernation instruction is sent to the tire pressure sensor to control the tire pressure sensor to enter a hibernation state; If several tire pressure sensors fail to upgrade, a rollback instruction is sent to the tire pressure sensor that has successfully upgraded; the rollback instruction is used to make the tire pressure sensor that has successfully upgraded return to the version before upgrading; If the upgrade task is interrupted during the transmission of the upgrade package or during the waiting for the activation of the upgrade package, the interrupted upgrade task is continued at the next upgrade.

8. An online upgrade system for a tire pressure sensor, the system comprising: Comprise: The vehicle-mounted OTA upgrade device is remotely connected with the cloud server, and is used to obtain an upgrade package for upgrading the tire pressure sensor from the cloud server; The vehicle-mounted Bluetooth upgrade device is connected with the vehicle-mounted OTA upgrade device through the vehicle network communication, and is connected with the tire pressure sensor through Bluetooth, and is used to obtain the upgrade authorization instruction of the user; the tire pressure sensor is authenticated; after the authentication is successful, the upgrade package is sent to the tire pressure sensor based on the upgrade authorization instruction; An activation instruction is sent to the tire pressure sensor to activate the upgrade package for online synchronous upgrading.

9. A vehicle characterized by comprising: Comprise: A plurality of tires fixed with tire pressure sensors; And the online upgrade system of the tire pressure sensor of claim 8; Wherein the tire pressure sensor comprises any one or more of a speed sensor, a temperature sensor and a pressure sensor, each of the tire pressure sensors comprises a Bluetooth radio frequency module; the speed sensor is used to monitor the motion state of the vehicle; the temperature sensor is used to monitor the temperature information of the tire; the pressure sensor is used to monitor the tire pressure information of the vehicle; The Bluetooth radio frequency module is used to emit or interrupt the radio frequency broadcast signal according to the motion state of the vehicle.

10. The vehicle of claim 9, wherein, The Bluetooth radio frequency module emits or interrupts the radio frequency broadcast signal according to the motion state of the vehicle, comprising: If the motion state of the vehicle is a starting state, a beacon protocol broadcast is started; If the motion state of the vehicle is a static state, a long-time connectable upgrade broadcast is started; If the motion state of the vehicle is a hibernation state, the radio frequency broadcast is interrupted.

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