Vehicle tire pressure monitoring reminding method and related equipment

Abstract

The invention discloses a vehicle tire pressure monitoring reminding method and related equipment, and relates to the field of vehicle early warning, the method comprises the following steps: when a tire pressure sensor detects that a tire pressure change value of a target vehicle is greater than a tire pressure change threshold value, the tire pressure sensor sends a tire pressure sensor signal containing a preset wake-up identifier to tire pressure receiving equipment; the tire pressure receiving equipment verifies the sensor identifier to generate a verification result; the tire pressure processing equipment analyzes the tire pressure data of the target vehicle at the current moment, and when the current tire pressure state is an abnormal state, the tire pressure processing equipment marks a tire pressure sensor signal as an abnormal state signal and sends the abnormal state signal to the vehicle-mounted communication equipment; the vehicle-mounted communication equipment sends an abnormal state signal to the cloud platform; and based on the abnormal state signal and the current state parameter of the target vehicle, the cloud platform generates target alarm information and sends the target alarm information to the mobile terminal.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle early warning, in particular to a vehicle tire pressure monitoring and reminding method and related equipment. BACKGROUND

[0002] The tire pressure monitoring system (TPMS) is a key technology in the field of automobile safety, which collects tire pressure data in real time by deploying pressure sensors inside the tire. In the prior art, sensor data needs to be transmitted to the control module through the vehicle bus, and after processing, the warning information is displayed on the instrument panel or the central control screen. The TPMS system has limitations, and the function start depends on the power-on state of the vehicle. When the vehicle is parked, the system enters hibernation and cannot monitor sudden tire leakage events. The information transmission channel is single, and the alarm can only be pushed through the in-vehicle display device. Users cannot get timely notification of dangerous situations after leaving the vehicle. The data update mechanism is lagging, and if tire pressure abnormalities occur when the vehicle is stationary, it needs to be re-driven to refresh the status, which leads to safety hazards that cannot be actively warned. Therefore, there is an urgent need for a vehicle tire pressure monitoring and reminding method to solve the above technical problems. SUMMARY

[0003] A series of simplified concepts are introduced in the summary section, which will be further described in detail in the specific embodiments section. The summary section of the present application does not mean to attempt to limit the key features and necessary technical features of the claimed technical solutions, nor to attempt to determine the protection scope of the claimed technical solutions.

[0004] In a first aspect, the present application provides a vehicle tire pressure monitoring and reminding method applied to a tire pressure system, the tire pressure system comprising a tire pressure sensor, a tire pressure receiving device, a tire pressure processing device, a vehicle communication device, a cloud platform and a mobile terminal, comprising:

[0005] When the tire pressure sensor detects that the tire pressure change value of the target vehicle is greater than the tire pressure change threshold, the tire pressure sensor sends a tire pressure sensor signal containing a preset wake-up identifier to the tire pressure receiving device;

[0006] The tire pressure receiving device extracts the sensor identifier in the tire pressure sensor signal and verifies the sensor identifier to generate a verification result. When the verification result is passed, the tire pressure receiving device sends the verified tire pressure sensor signal to the tire pressure processing device;

[0007] The tire pressure processing device analyzes the current tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state. When the current tire pressure state is an abnormal state, the tire pressure processing device marks the verified tire pressure sensor signal as an abnormal state signal and sends the abnormal state signal to the vehicle communication device;

[0008] The vehicle-mounted communication device sends an abnormal state signal to a cloud platform;

[0009] The cloud platform generates target alarm information based on the abnormal state signal and current state parameters of the target vehicle, and sends the target alarm information to a mobile terminal.

[0010] In some embodiments, the tire pressure change value is determined by:

[0011] Obtaining current tire pressure data and previous tire pressure data of the target vehicle at the current time;

[0012] Determining the difference between the current tire pressure data and the previous tire pressure data;

[0013] Determining the absolute value of the difference as the tire pressure change value.

[0014] In some embodiments, the preset wake-up identifier includes a polling frame header and a polling frame interval time; the tire pressure sensor signal is a radio frequency message sequence constructed based on the polling frame header and the polling frame interval time.

[0015] In some embodiments, the tire pressure receiving device checks the sensor identifier and generates a check result, including:

[0016] Obtaining a pre-stored sensor identifier of the target vehicle;

[0017] Checking the sensor identifier with the pre-stored sensor identifier to generate a check result, wherein when the sensor identifier matches the pre-stored sensor identifier, it is determined that the check result is passed; when the sensor identifier does not match the pre-stored sensor identifier, it is determined that the check result is not passed.

[0018] In some embodiments, the abnormal state is an under-pressure state, and the tire pressure processing device analyzes the current tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state, including:

[0019] When the current tire pressure data of the target vehicle is less than a preset tire pressure threshold, it is determined that the current tire pressure state is an under-pressure state.

[0020] In some embodiments, the cloud platform generates target alarm information based on the abnormal state signal and current state parameters of the target vehicle, including:

[0021] Determining the current tire pressure state based on the abnormal state signal;

[0022] Obtaining current state parameters of the target vehicle;

[0023] Determining a target alarm scene type based on the current tire pressure state and the current state parameters;

[0024] According to the target alarm scene type, target alarm information corresponding to the target alarm scene type is generated.

[0025] In some embodiments, the current tire pressure state is an under-pressure state, the current state parameter includes a current vehicle speed, the target alarm scene type includes a tire burst scene or a human damage scene, and the target alarm scene type is determined based on the current tire pressure state and the current state parameter, including:

[0026] When the current tire pressure state is an under-pressure state and the current vehicle speed is greater than a first vehicle speed threshold, the target alarm scene is determined to be a tire burst scene; or,

[0027] When the current tire pressure state is an under-pressure state and the current vehicle speed is a second vehicle speed threshold, the target alarm scene is determined to be a human damage scene.

[0028] In a second aspect, the application provides a tire pressure system, which includes a tire pressure sensor, a tire pressure receiving device, a tire pressure processing device, a vehicle-mounted communication device, a cloud platform, and a mobile terminal.

[0029] The tire pressure sensor is configured to send a tire pressure sensor signal containing a preset wake-up identifier to the tire pressure receiving device when detecting that a tire pressure change value of a target vehicle is greater than a tire pressure change threshold.

[0030] The tire pressure receiving device is configured to extract a sensor identifier in the tire pressure sensor signal and perform verification on the sensor identifier to generate a verification result, and send the verified tire pressure sensor signal to the tire pressure processing device when the verification result is passed.

[0031] The tire pressure processing device is configured to analyze current tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state, and mark the verified tire pressure sensor signal as an abnormal state signal and send the abnormal state signal to the vehicle-mounted communication device when the current tire pressure state is the abnormal state.

[0032] The vehicle-mounted communication device is configured to send the abnormal state signal to the cloud platform.

[0033] The cloud platform is configured to generate target alarm information based on the abnormal state signal and a current state parameter of the target vehicle, and send the target alarm information to the mobile terminal.

[0034] In a third aspect, the application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the vehicle tire pressure monitoring and reminding method of any one of the first aspect.

[0035] In a fourth aspect, the application provides a computer program product including a computer program, which, when executed by a processor, implements the steps of the vehicle tire pressure monitoring and reminding method of any one of the first aspect.

[0036] In summary, the vehicle tire pressure monitoring and reminding method of the embodiment of the application comprises: when the tire pressure sensor detects that the tire pressure change value of the target vehicle is greater than the tire pressure change threshold, the tire pressure sensor sends a tire pressure sensor signal containing a preset wake-up identifier to a tire pressure receiving device; the tire pressure receiving device extracts the sensor identifier in the tire pressure sensor signal and checks the sensor identifier to generate a check result; when the check result is passed, the tire pressure receiving device sends the checked tire pressure sensor signal to a tire pressure processing device; the tire pressure processing device analyzes the current tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state; when the current tire pressure state is an abnormal state, the tire pressure processing device marks the checked tire pressure sensor signal as an abnormal state signal and sends the abnormal state signal to a vehicle-mounted communication device; the vehicle-mounted communication device sends the abnormal state signal to a cloud platform; based on the abnormal state signal and the current state parameters of the target vehicle, the cloud platform generates target alarm information and sends the target alarm information to a mobile terminal. The application triggers a wireless signal containing a preset wake-up identifier through a tire pressure change threshold, so that the tire pressure receiving device can be precisely woken up in the vehicle off state, breaking the dependence of the traditional scheme on the vehicle power-on state; at the same time, the sensor identifier checking mechanism is used to filter out non-vehicle signals, effectively avoiding false wake-up and power consumption caused by adjacent vehicle broadcasting; further, through the closed-loop confirmation of the abnormal state by the tire pressure processing device and the dynamic generation of the alarm information by the cloud platform, a complete link from tire pressure abnormality detection to real-time reach of the mobile terminal is constructed, ensuring that the user can still know the emergency in time after leaving the vehicle, and improving the safety protection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0037] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments, and are not intended to limit the scope of the present description. Moreover, like reference numerals designate like parts throughout the several views in the drawings. In the drawings:

[0038] Figure 1 A vehicle tire pressure monitoring and reminding method flowchart is provided for the embodiment of the application;

[0039] Figure 2 A tire pressure system structure diagram is provided for the embodiment of the application. DETAILED DESCRIPTION

[0040] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application and above-mentioned drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the use of the terms so construed herein is merely for convenience and only to aid in understanding the application and in no way define the scope of the application. It is also to be understood that the description and the examples, while indicating certain embodiments of the application, are given by way of example and are not intended to limit the scope of the application unless otherwise specifically indicated. Thereafter, the application is described and exemplified by the following embodiments, in conjunction with the accompanying drawings. Obviously, the embodiments described herein are only a part rather than all of the embodiments of the application. Obviously, the embodiments described herein are only a part rather than all of the embodiments of the application.

[0041] Referring to Figure 1 A vehicle tire pressure monitoring and reminding method flowchart is provided for the embodiments of the application, applied to a tire pressure system, the tire pressure system comprising a tire pressure sensor, a tire pressure receiving device, a tire pressure processing device, a vehicle-mounted communication device, a cloud platform and a mobile terminal, and specifically can comprise:

[0042] S110, when the tire pressure sensor detects that the tire pressure change value of the target vehicle is greater than the tire pressure change threshold value, the tire pressure sensor sends a tire pressure sensor signal containing a preset wake-up identifier to the tire pressure receiving device;

[0043] For example, when the tire pressure sensor detects that the change amount of the adjacent two tire pressure monitoring values of the target vehicle exceeds the preset tire pressure change threshold value (such as 8.25kPa), the tire pressure sensor actively constructs and broadcasts a radio frequency signal containing a specific wake-up identifier (i.e. polling frame). The wake-up identifier is composed of a polling frame header and a polling frame interval time, forming a special signal sequence different from the conventional tire pressure message; its core function is to penetrate the vehicle sleep state and wake up the tire pressure receiving device in a very low power consumption mode. Since the radio frequency signal has the nature of broadcasting, adjacent vehicles of the same type may be synchronously received, but only when the sensor identifier in the signal matches the pre-stored identifier of the target vehicle, the subsequent link will be activated, thereby providing an initial trigger condition for the tire pressure abnormal response in the sleep state.

[0044] S120, the tire pressure receiving device extracts the sensor identifier in the tire pressure sensor signal, and verifies the sensor identifier to generate a verification result; when the verification result is passed, the tire pressure receiving device sends the verified tire pressure sensor signal to the tire pressure processing device;

[0045] Exemplarily, the tire pressure receiving device maintains a low-power monitoring mode in the off state of the vehicle, and when receiving a radio frequency signal containing a preset wake-up identifier, the sensor identifier is parsed from the signal and matched with the set of legal identifiers pre-stored in the vehicle system. If the identifier matches successfully, the tire pressure receiving device forwards the tire pressure sensor signal that passes the check to the tire pressure processing device through the vehicle bus; if the identifier does not match (such as interference signals broadcast by adjacent vehicles), the signal is directly discarded and the sleep state is returned. This checking mechanism ensures that only the tire pressure abnormal event of the vehicle can trigger the subsequent processing link, effectively avoiding power loss caused by false wake-up.

[0046] S130, the tire pressure processing device parses the current tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state; when the current tire pressure state is an abnormal state, the tire pressure processing device marks the checked tire pressure sensor signal as an abnormal state signal and sends the abnormal state signal to the vehicle communication device;

[0047] Exemplarily, the tire pressure processing device parses the current tire pressure data of the target vehicle based on the received checked tire pressure sensor signal to determine whether the current tire pressure state is an abnormal state that needs to be alarmed. The parsing process focuses on the severity verification of the absolute value of the tire pressure. If the current tire pressure value is lower than the preset safety threshold (such as 1.8 bar), it is determined as an abnormal state that needs to be triggered (i.e. underpressure state); otherwise, if the tire pressure value is within the normal range, even if the tire pressure change value has triggered the initial wake-up, it is still considered as a non-abnormal state. This design effectively eliminates false positive judgments caused by factors such as sudden changes in environmental temperature (for example, the scene of natural tire pressure drop of a high-temperature vehicle entering a cool environment). When the abnormal state is confirmed, the tire pressure processing device marks the checked signal as an abnormal state signal and forwards it to the vehicle communication device through the vehicle bus, thereby building a link to deliver the danger to the cloud.

[0048] S140, the vehicle communication device sends the abnormal state signal to the cloud platform;

[0049] Exemplarily, after receiving the abnormal state signal marked by the tire pressure processing device, the vehicle communication device immediately activates the vehicle wireless communication module (such as 4G / 5G TBOX), encapsulates the signal data containing the real-time value of the tire pressure, the type of abnormality, and the positioning information of the vehicle into a standardized transmission message, and uploads it to the cloud platform through the cellular network. This process ensures that the vehicle can still establish a remote communication link in the off state, realize real-time uploading of tire pressure danger data, and provide a raw data basis for dynamic analysis and alarm decision of the cloud platform.

[0050] S150, based on the abnormal state signal and the current state parameters of the target vehicle, the cloud platform generates target alarm information and sends the target alarm information to the mobile terminal.

[0051] Exemplarily, after receiving the abnormal state signal, the cloud platform synchronously acquires the current running parameters of the target vehicle, dynamically matches the preset alarm decision rule library by analyzing the association between the tire pressure abnormal type and the vehicle dynamic scene, generates a tire burst rescue instruction when identifying that the tire pressure is too low in high-speed driving, links the vehicle security system and generates a man-made damage warning instruction when detecting that the vehicle speed is 0 and the tire pressure is too low in the static state, and finally encapsulates the above scene-based instructions as target alarm information and pushes the target alarm information to the user mobile terminal to realize real-time risk reaching in the off-vehicle state.

[0052] In summary, the embodiment of the application actively monitors the tire pressure mutation event in the off-vehicle state through the tire pressure sensor, constructs and sends a wireless signal containing a specific wake-up identifier to the tire pressure receiving device when detecting that the tire pressure change value exceeds the preset threshold, breaks through the dependence of the traditional tire pressure monitoring system on the vehicle power-on state, and realizes the full-time risk perception capability. The tire pressure receiving device accurately filters non-vehicle signals through the sensor identifier verification mechanism, avoids the broadcast interference of adjacent vehicles, reduces the power consumption caused by false wake-up, and provides a basic guarantee for reliable monitoring in the sleep scene. The tire pressure processing device effectively excludes false positive judgments caused by environmental factors through the closed-loop verification mechanism of abnormal state, ensures that only real risk triggers the cloud reporting link, and the cloud platform generates scene-based alarm information based on the dynamic decision of the tire pressure abnormal data and the real-time parameters of the vehicle, and realizes real-time risk reaching in the off-vehicle state through the mobile terminal. The embodiment of the application constructs a complete link from tire pressure abnormality detection, risk analysis to mobile terminal real-time reaching, solves the defect that the user cannot timely know the emergency in the off-vehicle scene, and comprehensively improves the initiative and timeliness of vehicle safety protection.

[0053] In some examples, the tire pressure change value is determined by:

[0054] Acquiring the current tire pressure data and the previous tire pressure data of the target vehicle;

[0055] Determining the difference between the current tire pressure data and the previous tire pressure data;

[0056] Determining the absolute value of the difference as the tire pressure change value.

[0057] For example, the current tire pressure data of the target vehicle and the previous tire pressure data are acquired, the current tire pressure data is collected by the tire pressure sensor in the latest detection period, and the previous tire pressure data is stored in the non-volatile memory of the tire pressure sensor and represents the historical value of the last detection period; data acquisition is triggered based on a preset time interval to ensure that the time span of adjacent two data is constant. The algebraic difference between the current tire pressure data and the previous tire pressure data is determined, and the original difference result is generated through subtraction operation; the absolute value of the original difference result is taken as the tire pressure change value, and the calculation process is completed in the local embedded unit of the tire pressure sensor, so as to eliminate the interference of positive and negative signs on the sudden event judgment.

[0058] It should be noted that the tire pressure change threshold is 8.25 kPa, which is based on the tire safety engineering experiment calibration: when the tire pressure change of adjacent two detections exceeds this threshold, it is determined that there is a risk of rapid air leakage. The tire pressure sensor compares the tire pressure change value obtained by calculation with the tire pressure change threshold in real time, and only when the tire pressure change value is greater than 8.25 kPa, the subsequent signal sending process is triggered. This threshold design effectively filters the slow air pressure change caused by environmental temperature fluctuation (such as 0.5-2 kPa fluctuation caused by day and night temperature difference), and ensures the activation of the system response chain in the case of emergency air leakage event.

[0059] In summary, the embodiment of the present application realizes the capture of the tire pressure sudden change event through the tire pressure data acquisition with fixed time span and the absolute value calculation of the difference, combined with the engineering optimization threshold of 8.25 kPa. The embodiment of the present application excludes environmental interference and avoids false triggering caused by natural temperature fluctuation; ensures the response time, and the 8.25 kPa threshold ensures that the early warning can be activated in the initial stage of rapid tire leakage; optimizes the energy efficiency ratio, and the localized calculation reduces the data transmission energy consumption and prolongs the service life of the tire pressure sensor battery. The design maintains low power consumption and provides a reliable initial judgment reference for tire pressure safety in the vehicle off state.

[0060] In some examples, the preset wake-up identifier includes a polling frame header and a polling frame interval time; and the tire pressure sensor signal is a radio frequency message sequence constructed based on the polling frame header and the polling frame interval time.

[0061] The preset wake-up identifier is composed of a polling frame header and a polling frame interval time. The polling frame header is a fixed frame header identifier code generated based on a preset binary encoding rule, and is used to identify the type of the emergency wake-up signal. The polling frame interval time is a frame interval waiting time configured based on a preset time parameter, and is used to separate the continuously transmitted radio frequency message units. When the tire pressure sensor detects that the tire pressure change value is greater than 8.25 kPa, the tire pressure sensor constructs a radio frequency message sequence based on the combination logic of the polling frame header and the polling frame interval time. First, the polling frame header is generated as a starting identifier. Then, at least three repeated radio frequency message unit groups are associated. Each message unit group includes a tire pressure value field (including the current pressure value, temperature value and sensor ID) generated based on a standard tire pressure data format, and a silence period defined by the polling frame interval time is inserted between adjacent message unit groups. The radio frequency message sequence is different from the single transmission mode of the conventional tire pressure signal. Through the special coding of the polling frame header and the timing design of the repeated message unit group, the tire pressure receiving device can identify the specific signal mode through the low-power listening circuit in the vehicle off state, so as to trigger the wake-up mechanism, and at the same time ensure that the signal structure is compatible with the ISO 7637 vehicle-mounted radio frequency communication standard.

[0062] In summary, the radio frequency message sequence constructed by the polling frame header and the polling frame interval time cooperatively realizes the directional wake-up function in the sleep state in the field of vehicle tire pressure monitoring. The special coding design of the polling frame header enables the receiving device to quickly identify the effective signal with low power consumption, avoiding false wake-up caused by conventional environmental radio frequency interference. The cooperation mechanism of the repeated message unit group and the interval time ensures that the signal recognition rate remains high in a complex electromagnetic environment, improving the response reliability of sudden tire leakage events. The standardized message structure is compatible with the existing vehicle-mounted communication protocol, and does not need to modify the hardware circuit for deployment, providing a low-cost technical path for upgrading the traditional tire pressure system. While ensuring full-time monitoring capability, the embodiment of the present application balances the contradiction between tire pressure safety monitoring and energy consumption control.

[0063] In some examples, the tire pressure receiving device checks the sensor identifier and generates a check result, including:

[0064] Obtaining a pre-stored sensor identifier of the target vehicle;

[0065] Checking the sensor identifier and the pre-stored sensor identifier to generate a check result, wherein when the sensor identifier matches the pre-stored sensor identifier, it is determined that the check result is passed; and when the sensor identifier does not match the pre-stored sensor identifier, it is determined that the check result is not passed.

[0066] Exemplarily, after receiving the radio frequency signal containing the preset wake-up identifier, the tire pressure receiving device first extracts the sensor identifier from the designated field of the signal frame. The pre-stored sensor identifier is a unique code set preprogrammed and stored in the non-volatile memory (NVM) of the receiving device when the target vehicle is manufactured, and each code corresponds to a legal sensor of the tire of the vehicle, and the storage form is an unalterable binary array. In the verification process, the tire pressure receiving device calls a local verification algorithm to match the extracted sensor identifier with the pre-stored identifier set item by item: the matching logic is to divide the identifier according to the preset byte length, and sequentially compare the numerical consistency of each byte; the matching rule requires that all bytes are completely consistent to determine that the matching is successful, and any byte inconsistency determines that the matching fails. If the matching is successful, the verification result is “pass”, and the subsequent signal forwarding process is triggered; if the matching fails, the verification result is “fail”, the current signal is discarded, and the receiving device is controlled to return to the sleep state within 10 ms. This verification mechanism ensures that only when the signal source is confirmed as the tire pressure sensor of the vehicle, the subsequent processing link is activated, thereby avoiding the interference caused by the same frequency signal of the adjacent vehicle.

[0067] It should be noted that the update and maintenance of the pre-stored sensor identifier follow the vehicle electronic system security protocol, and the initial pre-stored operation is written into the NVM of the tire pressure receiving device through a diagnostic device during the vehicle assembly stage, and the storage format is an encrypted hash value; subsequent changes (such as sensor replacement caused by tire replacement) need to be rewritten through the NVM data after the two-way identity authentication through the authorized diagnostic tool connected to the vehicle OBD interface. The byte comparison in the verification process is completed by using the hardware accelerated bit operation instruction, so as to avoid the power loss caused by calculation delay.

[0068] In summary, the embodiment of the present application combines the static binding of the pre-stored identifier with the dynamic verification of the real-time signal source, and builds a safety barrier for the vehicle tire pressure monitoring system. Based on the legal identifier set stored in the NVM and the byte-level matching rule, it is ensured that only the rapid deflation event triggered by the sensor of the vehicle can activate the subsequent processing link, thereby eliminating the risk of false wake-up caused by the broadcast signal of the adjacent vehicle; the millisecond-level fast sleep control after the verification failure reduces the working current of the receiving device from the wake-up state to the sleep state, thereby optimizing the overall energy consumption performance of the vehicle during the sleep period. The embodiment of the present application maintains the low power consumption characteristic while laying a technical foundation for the reliability of the full-time tire pressure monitoring.

[0069] In some examples, the abnormal state is an under-pressure state, and the tire pressure processing device analyzes the current time tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state, including:

[0070] When the current time tire pressure data of the target vehicle is less than a preset tire pressure threshold, it is determined that the current tire pressure state is an under-pressure state.

[0071] Exemplarily, after receiving the checked tire pressure sensor signal forwarded by the tire pressure receiving device, the tire pressure processing device immediately analyzes the current time tire pressure data of the target vehicle to determine whether to trigger an abnormal state. Specifically, the current time tire pressure data is extracted from the signal, and the redundant fields are stripped; the current time tire pressure data is compared with a preset tire pressure threshold value (the preset tire pressure threshold value is 1.8 bar according to the vehicle load and tire specification); if the current time tire pressure data is lower than the preset tire pressure threshold value, it is determined that the current tire pressure state is an under-pressure state that needs to be warned; if it is equal to or higher than the threshold value, it is determined to be a normal state; this determination process is independent of temperature change factors (such as natural pressure drop caused by high-temperature vehicle entering a cool environment), and is determined only according to the absolute value of the tire pressure, to ensure that environmental interference does not trigger false alarms; when it is confirmed to be an under-pressure state, the tire pressure processing device adds an abnormal state label (the label field includes the under-pressure type, the triggering time and the tire position code) to the checked original tire pressure sensor signal to generate an abnormal state signal.

[0072] In summary, the embodiment of the present application constructs an objective technical standard for tire pressure abnormality determination through the absolute pressure value comparison mechanism of the preset tire pressure threshold value, effectively overcoming the risk of misjudgment caused by environmental temperature fluctuations. Specifically, the preset tire pressure threshold value (1.8 bar) is based on tire safety engineering experiments, and when the tire pressure is lower than this value, the vehicle handling and the risk of tire burst increase. This threshold design ensures that only real danger triggers the subsequent warning link; the abnormality determination process is independent of temperature dependence, and directly determines the state classification according to the absolute value of the tire pressure, completely avoiding the natural pressure drop interference caused by thermal expansion and cold contraction when a high-temperature vehicle enters a cool environment (such as the case where the tire pressure drops from 3.7 bar to 2.5 bar in the Turpan scene, which is still higher than the threshold value); the generation of a standardized abnormal state signal provides a structured danger description field for the cloud platform, supporting the execution of subsequent scenario-based warning decisions. This design maintains low computational complexity while achieving high reliability in tire pressure danger determination, providing data verification protection for vehicle safety protection.

[0073] In some examples, based on the abnormal state signal and the current state parameter of the target vehicle, the cloud platform generates target warning information, including:

[0074] Based on the abnormal state signal, the current tire pressure state is determined, and the current tire pressure state is an under-pressure state;

[0075] Obtaining the current state parameter of the target vehicle;

[0076] Based on the current tire pressure state and the current state parameter, a target warning scene type is determined, and the target warning scene type includes a tire burst scene or a human damage scene, including:

[0077] When the current tire pressure state is an under-pressure state and the current vehicle speed is greater than a first vehicle speed threshold, the target warning scene is determined to be a tire burst scene; or

[0078] When the current tire pressure state is an under-pressure state and the current vehicle speed is a second vehicle speed threshold, the target warning scene is determined to be a human damage scene.

[0079] According to the target warning scene type, target warning information corresponding to the target warning scene type is generated.

[0080] Exemplarily, after the cloud platform receives the abnormal state signal uploaded by the vehicle-mounted communication device, the signal is first structured and parsed, and the real-time tire pressure value, tire position identifier and abnormal trigger timestamp are extracted from the signal. Based on the preset tire pressure threshold (1.8 bar), it is verified whether the current tire pressure state is an under-pressure state. At the same time, the current state parameters of the target vehicle are obtained in real time through the vehicle-mounted CAN bus, including the vehicle speed (unit: km / h) and the vehicle position change state (whether long-term stationary is calculated through the GPS displacement).

[0081] Based on the under-pressure state and real-time vehicle parameters obtained by parsing, the cloud platform executes scene matching logic, that is, when the under-pressure state is established and the current vehicle speed is greater than a first vehicle speed threshold (80 km / h), the tire burst scene is triggered. The threshold is set according to the risk characteristics of tire pressure zero in high-speed driving of the vehicle, to ensure that only sudden loss of pressure events in high-speed driving are classified as tire burst. When the under-pressure state is established and the current vehicle speed is equal to a second vehicle speed threshold (0 km / h), the human damage scene is triggered. The vehicle speed of 0 km / h clearly defines that the vehicle is in a stationary state, which meets the occurrence condition of human damage events (such as puncturing and deflating tires).

[0082] According to the determination result of the warning scene type, the cloud platform calls the preset warning template to generate structured information. When the tire burst scene is triggered, the first warning information including the vehicle positioning coordinates, the emergency rescue contact method and the safety operation instruction (such as "please hold the steering wheel and gently press the brake") is generated. When the human damage scene is triggered, the second warning information including the risk prompt (such as "left front tire pressure abnormally drops, suspected human damage"), the evidence suggestion (such as "the sentry mode video has been activated") and the insurance report link is generated. The warning information is encapsulated by JSON data, including text, link and instruction code fields, which adapts to the multi-modal display requirements of mobile terminals.

[0083] After generating the target alarm information, the cloud platform pushes it to the mobile terminal APP bound by the user through an encrypted channel, triggering the reminder mechanism of the APP (such as high-loudness alarm sound + full-screen pop-up window). For the scenario of human damage, a sentinel mode activation instruction is simultaneously issued to the vehicle-mounted communication device, the instruction containing the timestamp and duration parameters of the abnormal signal (such as "2-minute video before and after recording the event"), and the vehicle-mounted communication device links the event according to the specified time window to store the environmental video and returns it to the cloud backup.

[0084] In summary, the embodiments of the present application construct a scenario-based decision-making system for tire pressure risk through the cooperative analysis of the under-voltage state and vehicle operating parameters, and based on the vehicle speed threshold design of 80 km / h and 0 km / h, distinguish between high-risk events such as high-speed tire burst and static damage, and avoid misjudgment in non-typical scenarios such as low-speed driving; the dynamically generated alarm information deeply integrates rescue resources and evidence links (such as embedding rescue contact information in the tire burst scenario and linking the sentinel mode in the human damage scenario), providing a closed-loop solution for users from risk perception to emergency disposal; the instruction-based push mechanism ensures the cross-platform cooperation of mobile terminals and vehicle-mounted devices, improving the disposal efficiency and safety guarantee capability of users for sudden tire pressure risks.

[0085] In some examples, further comprising:

[0086] In the scenario of long-term vehicle static state, the tire pressure sensor realizes periodic tire pressure decay monitoring through the built-in timer mechanism, starts the timer from the end of the last vehicle cycle (vehicle engine off), and when the continuous static duration reaches the 168-hour threshold, the tire pressure sensor actively reads the current tire pressure value and immediately returns to the silent state; if the detected current tire pressure value is lower than the preset lower tire pressure threshold (such as 1.8 bar), the signal wake-up link of the rapid air leak event is reused, i.e., the tire pressure sensor constructs a radio frequency signal containing a polling frame (reusing the wake-up identifier of the rapid air leak), which is sent to the tire pressure receiving device in a broadcast manner to wake up the vehicle system; after waking up, the tire pressure receiving device checks that the sensor identifier is valid, and if the check is passed, the current tire pressure data is forwarded to the cloud platform; based on the joint determination that the vehicle location has been static for more than 168 hours and the tire pressure is lower than the lower threshold, the cloud platform generates a text alarm information "tire pressure is insufficient and needs to be inflated" and pushes it to the mobile terminal. To optimize energy consumption, this mechanism is designed as a single trigger mode, which activates the wake-up process only when the tire pressure is lower than the preset threshold for the first time, and does not trigger again even if the tire pressure continues to be lower than the threshold; until the vehicle is powered on and driven again and the tire pressure is restored to above the preset threshold, the timer and the trigger authority are reset, ensuring that only one wake-up event occurs in a single vehicle cycle.

[0087] Please refer to Figure 2A schematic diagram of a tire pressure system structure is provided for an embodiment of the present application, the tire pressure system comprising: a tire pressure sensor 21, a tire pressure receiving device 22, a tire pressure processing device 23, a vehicle-mounted communication device 24, a cloud platform 25, and a mobile terminal 26;

[0088] The tire pressure sensor 21 is configured to send a tire pressure sensor signal containing a preset wake-up identifier to the tire pressure receiving device when detecting that the tire pressure change value of the target vehicle is greater than the tire pressure change threshold value;

[0089] The tire pressure receiving device 22 is configured to extract the sensor identifier in the tire pressure sensor signal and verify the sensor identifier to generate a verification result; when the verification result is passed, the verified tire pressure sensor signal is sent to the tire pressure processing device 23;

[0090] The tire pressure processing device 23 is configured to analyze the current tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state; when the current tire pressure state is an abnormal state, the verified tire pressure sensor signal is marked as an abnormal state signal, and the abnormal state signal is sent to the vehicle-mounted communication device;

[0091] The vehicle-mounted communication device 24 is configured to send the abnormal state signal to the cloud platform 25;

[0092] The cloud platform 25 is configured to generate target alarm information based on the abnormal state signal and the current state parameters of the target vehicle, and send the target alarm information to the mobile terminal 26.

[0093] The tire pressure system of the embodiment of the present application consists of a tire pressure sensor 21, a tire pressure receiving device 22, a tire pressure processing device 23, a vehicle-mounted communication device 24, a cloud platform 25 and a mobile terminal 26 to form a closed-loop monitoring link. The tire pressure sensor 21 is deployed inside each tire of the vehicle to monitor tire pressure data in real time. When the absolute change amount of the tire pressure values detected in two adjacent times exceeds the preset tire pressure change threshold, a radio frequency wake-up signal containing a specific polling frame header and a frame interval time is actively constructed and broadcasted. The tire pressure receiving device 22 maintains a low-power listening mode in the vehicle off state. After receiving the signal, the embedded sensor identifier is immediately extracted, and a byte-level matching check is performed with the set of legal identifiers pre-stored in the non-volatile memory (NVM) of the vehicle. Only when the check passes, the tire pressure data is forwarded to the tire pressure processing device 23. The tire pressure processing device 23 analyzes the real-time tire pressure value. If the current pressure value is lower than the preset safety threshold, it is determined as an under-pressure abnormal state, and an abnormal state signal is generated by adding an abnormal label to the original signal and transmitted to the vehicle-mounted communication device 24 through the vehicle-mounted bus. The vehicle-mounted communication device 24 activates the cellular network module (such as 4G / 5G TBOX), encapsulates the abnormal state signal into a standardized transmission message and uploads it to the cloud platform 25. The cloud platform 25 synchronously acquires vehicle dynamic parameters such as speed and location state, generates a scenario-based alarm instruction by analyzing the correlation between the under-pressure state and the speed, and finally pushes the target alarm information to the user's mobile terminal 26 to realize real-time reach and disposal guidance of off-vehicle danger.

[0094] Those skilled in the art should understand that the embodiments of the present application can provide methods, systems or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-readable storage media containing computer-readable program code.

[0095] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams can be implemented by computer program instructions, and the combination of flows and / or blocks in the flowcharts and / or block diagrams. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing devices to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices produce a machine that implements the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in one flow or multiple flows and / or blocks Figure 1 The functions specified in one flow or multiple flows and / or blocks

[0096] These computer program instructions can 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 instructions which implement the flow Figure 1 one or more flow or block Figure 1 one or more flow or block

[0097] These computer program instructions can 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 flow Figure 1 one or more flow or block Figure 1 one or more flow or block

[0098] The embodiments of the present application also provide a computer program product, which comprises computer software instructions, when the computer software instructions are run on a processing device, causing the processing device to execute the flow Figure 1 of a vehicle tire pressure monitoring reminding method in the corresponding embodiments.

[0099] The computer program product comprises one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of the present application is produced. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired or wireless means. The computer readable storage medium can be any available medium that can be stored by the computer or integrated into a server, data center and other data storage devices including one or more available media sets. The available media can be magnetic media, optical media or semiconductor media, etc.

[0100] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0101] In several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative. For example, each unit or component can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0102] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0103] In addition, the functional units in each embodiment of the present application can be integrated into one processing unit, or each unit can be physically present separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in the form of hardware and / or software functional units.

[0104] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device to execute all or part of the steps of the methods of the embodiments. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory, magnetic disk or optical disk, and various media that can store program codes.

[0105] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions described in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments.

[0106] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to include all changes and modifications falling within the scope of the present application and the description.

[0107] Obviously, numerous modifications and variations of the present specification are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the specification can be practiced otherwise than as specifically described.

Claims

1. A vehicle tire pressure monitoring alert method, characterized by, The application is applied to a tire pressure system, which comprises a tire pressure sensor, a tire pressure receiving device, a tire pressure processing device, a vehicle-mounted communication device, a cloud platform and a mobile terminal, and comprises the following steps: When the tire pressure sensor detects that the tire pressure change value of the target vehicle is greater than the tire pressure change threshold, the tire pressure sensor sends a tire pressure sensor signal containing a preset wake-up identifier to the tire pressure receiving device; The tire pressure receiving device extracts the sensor identifier in the tire pressure sensor signal and verifies the sensor identifier to generate a verification result; when the verification result is passed, the tire pressure receiving device sends the verified tire pressure sensor signal to the tire pressure processing device; The tire pressure processing device analyzes the current time tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state; when the current tire pressure state is the abnormal state, the tire pressure processing device marks the verified tire pressure sensor signal as an abnormal state signal and sends the abnormal state signal to the vehicle-mounted communication device; The vehicle-mounted communication device sends the abnormal state signal to the cloud platform; Based on the abnormal state signal and the current state parameter of the target vehicle, the cloud platform generates target alarm information and sends the target alarm information to the mobile terminal.

2. The method of claim 1, wherein, The tire pressure change value is determined by the following methods: Obtain the current time tire pressure data and the previous time tire pressure data of the target vehicle; Determine the difference between the current time tire pressure data and the previous time tire pressure data; The absolute value of the difference is determined as the tire pressure change value.

3. The method of claim 1, wherein, The preset wake-up identifier includes a polling frame header and a polling frame interval time; the tire pressure sensor signal is a radio frequency message sequence constructed based on the polling frame header and the polling frame interval time.

4. The method of claim 1, wherein, The tire pressure receiving device verifies the sensor identifier to generate a verification result, which comprises: Obtain the pre-stored sensor identifier of the target vehicle; Verify the sensor identifier with the pre-stored sensor identifier to generate a verification result, wherein when the sensor identifier matches the pre-stored sensor identifier, it is determined that the verification result is passed; when the sensor identifier does not match the pre-stored sensor identifier, it is determined that the verification result is not passed.

5. The method of claim 1, wherein, The abnormal state is an under-pressure state, and the tire pressure processing device analyzes the current time tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state, which comprises: When the current time tire pressure data of the target vehicle is less than a preset tire pressure threshold, it is determined that the current tire pressure state is the under-pressure state.

6. The method of claim 5, wherein, Based on the abnormal state signal and the current state parameter of the target vehicle, the cloud platform generates target alarm information, which comprises: Determine the current tire pressure state based on the abnormal state signal; Obtain the current state parameter of the target vehicle; Determine the target alarm scene type based on the current tire pressure state and the current state parameter; Generate the target alarm information corresponding to the target alarm scene type according to the target alarm scene type.

7. The method of claim 6, wherein, The current tire pressure state is the under-pressure state, the current state parameter includes a current vehicle speed, the target warning scene type includes a tire burst scene or a human damage scene, and the target warning scene type is determined based on the current tire pressure state and the current state parameter, including: When the current tire pressure state is the under-pressure state and the current vehicle speed is greater than a first vehicle speed threshold, the target warning scene is determined to be the tire burst scene; or, When the current tire pressure state is the under-pressure state and the current vehicle speed is a second vehicle speed threshold, the target warning scene is determined to be the human damage scene.

8. A tire pressure system characterized by, The tire pressure system includes a tire pressure sensor, a tire pressure receiving device, a tire pressure processing device, a vehicle-mounted communication device, a cloud platform, and a mobile terminal. The tire pressure sensor is configured to send a tire pressure sensor signal containing a preset wake-up identifier to the tire pressure receiving device when a tire pressure change value of a target vehicle is greater than a tire pressure change threshold. The tire pressure receiving device is configured to extract a sensor identifier in the tire pressure sensor signal and verify the sensor identifier to generate a verification result, and send the verified tire pressure sensor signal to the tire pressure processing device when the verification result is passed. The tire pressure processing device is configured to analyze current tire pressure data of the target vehicle to determine whether the current tire pressure state is an abnormal state, and mark the verified tire pressure sensor signal as an abnormal state signal and send the abnormal state signal to the vehicle-mounted communication device when the current tire pressure state is the abnormal state. The vehicle-mounted communication device is configured to send the abnormal state signal to the cloud platform. The cloud platform is configured to generate target warning information based on the abnormal state signal and a current state parameter of the target vehicle, and send the target warning information to the mobile terminal.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the vehicle tire pressure monitoring and reminding method of any one of claims 1 to 7.

10. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the vehicle tire pressure monitoring and reminding method of any one of claims 1 to 7.

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