1886 results about "Tire pressure" patented technology

The invention relates to the field of sensor activation, in particular to a tire pressure sensor activation method and device, equipment and a storage medium. The method comprises the following steps: acquiring vehicle running state monitoring parameters and vehicle driving monitoring images in real time based on a multi-sensor array; vehicle vibration time-frequency analysis is carried out on the vehicle running state monitoring parameters, vehicle vibration situation mining is carried out, and a vehicle vibration situation curve is constructed; road object recognition is carried out on the vehicle driving monitoring image based on the vehicle vibration situation curve, real-time road condition scene structure rendering is carried out, and a real-time road condition scene model is constructed; obtaining a historical behavior log of the vehicle; carrying out multi-time-point vehicle position calculation on the vehicle historical behavior log, and carrying out dynamic vehicle movement track reconstruction so as to construct a historical vehicle dynamic track; and performing dynamic behavior feature analysis on the historical vehicle dynamic trajectory, and constructing a personalized driving portrait of the vehicle owner. According to the invention, efficient and rapid tire pressure sensor activation is realized.

The invention belongs to the field of vehicle early warning, and particularly relates to a vehicle hidden danger recognition and safety early warning method and device, and the method comprises the following steps: collecting vehicle speed, tire pressure and road condition data, obtaining the states of key parts of an engine and a braking system through combining an OBD system, and achieving the dynamic perception of a whole vehicle; based on a deep learning algorithm, accurately identifying the too short distance of the front vehicle, fatigue driving, overspeed, area deviation, long-term left-occupying driving of a lane, vehicle retrograde driving and abnormal line pressing tracks; through vehicle-mounted OBD data and cloud large model analysis, potential mechanical faults of tire wear and brake pad aging are predicted, and maintenance suggestions are pushed in advance, so that a driver can be reminded of safety, the driving safety is improved, the hidden danger recognition capability is improved, safety preventive warning is performed on hidden dangers, the driving safety is ensured, and the driving safety is improved. Meanwhile, the vehicle can be guided to avoid high-risk or forbidden road sections, and the probability that the vehicle enters a dangerous or forbidden area is reduced.

The invention discloses a tire wear diagnosis method, device and equipment and a storage medium, and the method comprises the steps: generating a tire wear calculation model based on obtained key factors affecting tire wear, wherein the key factors comprise vehicle driving mileage, historical driving road condition information, driving habits, vehicle tire pressure and four-wheel positioning information; and calculating a current tire wear coefficient according to the tire wear calculation model, and diagnosing tire wear by using the current tire wear coefficient. The abnormal condition of tire wear can be effectively identified, a terminal client is reminded of the tire wear state of the vehicle, and the use safety of the vehicle tire is ensured.

The invention relates to the technical field of sensor upgrading, in particular to a remote upgrading method and system for a tire pressure sensor. The method comprises the following steps: acquiring real-time state data of a tire pressure sensor; carrying out outlier parameter elimination on the real-time state data of the tire pressure sensor, and carrying out state diagnosis mining, so as to generate a state diagnosis report of the tire pressure sensor; performing upgrade demand prediction based on the tire pressure sensor state diagnosis report, and performing priority upgrade analysis to extract a plurality of upgradable sensors; performing byte-by-byte difference identification on the plurality of upgradable sensors based on preset latest version information, and performing incremental data encapsulation to generate a plurality of incremental upgrading data blocks; acquiring a historical running log of the vehicle; performing dynamic vehicle using behavior analysis and vehicle idle time period prediction on the vehicle historical operation log to generate a plurality of idle prediction time periods; the upgrading efficiency and the safety performance of the tire pressure sensor are improved.

The invention discloses a vehicle-mounted tire pressure sensor rapid programming and automatic positioning method and related equipment, and the method comprises the following steps: respectively transmitting low-frequency programming signals to a preset number of tire pressure sensors; controlling a tire pressure sensor to transmit a high-frequency response signal to a tire pressure receiver; writing the high-frequency response signal into a program code corresponding to the tire pressure sensor, and generating a one-to-one corresponding unique identity; respectively transmitting low-frequency positioning signals to a preset number of tire pressure sensors; generating status words in one-to-one correspondence according to a preset corresponding relation and the unique identity; a preset number of tire pressure sensors are controlled to send corresponding status words to a tire pressure receiver; controlling the tire pressure sensor to identify the status word to obtain corresponding real-time pressure data, and determining position information corresponding to the tire pressure sensor according to the unique identity; and displaying the real-time pressure data and the position information corresponding to the preset number of tire pressure sensors in a preset display screen. The method is used for improving the programming efficiency and the positioning accuracy of the tire pressure sensor.

The invention discloses a tire pressure health state prediction method based on multi-source data, comprising the following steps: acquiring multi-source data including tire pressure sensor data, vehicle driving data, environment temperature data and historical tire pressure data; the obtained tire pressure sensor data, the vehicle driving data, the environment temperature data and the historical tire pressure data are preprocessed; feature vectors in the tire pressure sensor data, the vehicle driving data, the environment temperature data and the historical tire pressure data are extracted and fused; and training the prediction model by adopting a machine learning algorithm, and outputting a tire pressure health state prediction result. The method has the following advantages and effects that the tire pressure state can be monitored in real time, the environment temperature, the vehicle driving condition and historical data can be comprehensively considered, multi-source data fusion and an intelligent algorithm are applied to tire pressure health state prediction, the adaptability and stability of a prediction model are improved, and the prediction efficiency is improved. And comprehensive safety guarantee is provided for the driver.

Embodiments relates to systems and methods to calculate a tire pressure scheme to be utilized by a tire of a vehicle during a trip, communicate a command to the tire pressure control apparatus, to adjust tire pressure of a tire based on the tire pressure scheme, detect a problem encountered in adjusting the tire pressure of the tire based on the tire pressure scheme, generate an alert regarding the problem via a driver assistance interface, and recommend an action to be taken to mitigate the problem.

The invention relates to the technical field of vehicle control, and discloses a vehicle tire monitoring method and system and electronic equipment. The method comprises the steps of obtaining tire information of a vehicle; if it is monitored that the tire comprises at least one of the following conditions, calculating a standardized value of the index under the current condition; wherein if it is determined that the tire pressure is abnormal or / and the tire pressure difference is abnormal, if it is determined that the tire temperature is abnormal or / and the tire temperature difference is abnormal, if it is determined that abrasion is abnormal, if it is determined that the slip rate is abnormal, if it is determined that the numerical value change between the tire pressure and the tire temperature is not in positive correlation, and if it is determined that the numerical value change between the tire pressure difference and the tire temperature difference is not in positive correlation, the slip rate is abnormal; if it is determined that the numerical change between the slip rate and the wear value is not positively correlated; performing weighted calculation according to the weight coefficient corresponding to the index and the standardized numerical value, and determining a comprehensive index; according to the tire state monitoring method and device, the tire state is monitored in an omnibearing mode, the traffic accident risk caused by the tire is avoided, and the driving safety is guaranteed.

The invention discloses an EPB anti-lock control method and system based on a self-adaptive wheel speed filtering algorithm, and belongs to the field of anti-lock control, and the method comprises the following steps: S1, collecting driving parameters in a vehicle driving process in real time, extracting feature vectors in the driving parameters after preprocessing, inputting the feature vectors into a pre-trained driving condition classification model, and obtaining a driving condition classification model; outputting the current driving condition type; s2, correcting a wheel speed signal based on an extended Kalman filter with determined parameters; s3, calculating a tire pressure deviation ratio based on the corrected wheel speed signal; and S4, when it is detected that the tire pressure deviation ratio exceeds a set threshold value, an EPB anti-lock control system is triggered. By the adoption of the EPB anti-lock control method and system based on the self-adaptive wheel speed filtering algorithm, the wheel speed information can be accurately extracted under the complex road and environment conditions, the calculation precision of the tire pressure deviation ratio is remarkably improved, and therefore a more reliable basis is provided for starting emergency braking.

The invention provides a vehicle tire pressure sensor matching method and device, a vehicle and a storage medium. The method comprises the following steps: when a vehicle is in a turning state, obtaining a first classification result according to centripetal acceleration sent by each tire pressure sensor; if the vehicle has two tires, a second classification result is obtained according to the X-axis acceleration sent by each tire pressure sensor; in the wheel rotating process, a third classification result is obtained according to the gravity acceleration Z-axis component sent by each tire pressure sensor and the wheel rotating tooth number sent by the vehicle speed sensor corresponding to each tire; and determining a matching result of the tire pressure sensor of the vehicle according to at least one of the first classification result, the second classification result and the third classification result. Automatic matching of the tire pressure sensors can be achieved, a special tool is not needed, a user does not need to drive a vehicle to a maintenance point, the tire does not need to be deflated, all the tire pressure sensors can be matched at the same time at a time, and efficiency is high.

An embodiment apparatus for recording a video in a parked vehicle includes an impact detection module configured to detect an impact applied to the parked vehicle parked in a neutral state (N-state) parking mode, wherein, in the N-state parking mode, an engine is in an ignition-off state and a gear shift lever is in a neutral state, a control module configured to determine, based on an air pressure of a tire or a wavelength of a radar reception signal, whether the parked vehicle is moving, in response to detection of the impact, and a camera module configured to record a video of surroundings of the parked vehicle, in response to a determination that the parked vehicle is moving.

The invention relates to a Bluetooth-based tire pressure sensor positioning method. The tire pressure sensor positioning method comprises the steps that S1, Bluetooth connection is established between a vehicle ECU and a tire pressure sensor, and clock synchronization is established on the vehicle ECU and the tire pressure sensor; s2, the tire pressure sensor periodically sends a positioning data packet to the vehicle ECU, the positioning data packet at least comprises backspacing time, and the backspacing time is used for representing the moment when the tire pressure sensor reaches the reference point; s3, the vehicle ECU calculates the corresponding moment when the vehicle ECU side reaches the reference point based on the backspacing time; s4, the vehicle ECU carries out deviation degree statistics on the obtained ABS information based on the corresponding moment, and a tire pressure sensor is positioned according to a statistical result; and S5, if the vehicle ECU positions the tire pressure sensor, the vehicle ECU instructs the tire pressure sensor to stop sending the positioning data packet. The tire pressure sensor can be effectively positioned, and the service life of the tire pressure sensor can be prolonged.

The invention discloses a tire pressure anomaly detection method and device, which can be applied to the technical field of vehicles, and comprises the following steps: determining the ratio of the environment temperature to the current temperature of each tire; determining an underpressure alarm threshold value corresponding to each tire according to the product of each specific value and a recommended air pressure value of the whole vehicle, determining a tire pressure value corresponding to each tire according to the inflation pressure recommended by a vehicle manufacturer for the vehicle model according to the expected application condition of the given vehicle, and determining an underpressure alarm threshold value corresponding to each tire according to the tire pressure value. And comparing the tire pressure value of each tire with the corresponding under-pressure alarm threshold value, and if the tire pressure value is greater than or equal to the under-pressure alarm threshold value, determining that the tire pressure of the corresponding tire is abnormal. According to the method, the environment temperature and the tire temperature are combined for calculation, the environment temperature is considered, the influence of the external environment temperature on the tire pressure can be reduced, the accuracy of tire pressure anomaly detection can be improved, potential safety hazards are reduced, and the experience feeling of a user is improved.

The invention relates to a tire pressure monitoring method and system, a storage medium and a vehicle, and belongs to the technical field of tire pressure monitoring. Performing image processing on the tire grounding state image to obtain a grounding contour, and fitting the grounding contour into an ellipse to obtain long axis and short axis parameters of the ellipse; calculating a deformation ratio based on long-axis and short-axis parameters of the ellipse; calculating the current tire pressure through a pre-constructed tire pressure calculation model based on the deformation ratio; and judging whether the slow air leakage phenomenon exists in the tire according to the current tire pressure and the standard tire pressure. According to the method, the tire grounding state image can be obtained in real time without adding extra hardware, the cost is reduced by analyzing the tire deformation and judging the current tire pressure state, the influence of low temperature is considered, the slow air leakage condition can be detected, and the monitoring precision is improved.

The invention relates to the technical field of tire pressure monitoring, in particular to an indirect tire pressure monitoring method and device, a vehicle and a storage medium. The method includes: judging whether a vehicle is in a no-load state based on current mass of the vehicle; if the vehicle is in a no-load state, entering a no-load supervision mode based on a preset no-load correction coefficient and a preset standard frequency, and calculating a standard pulse number of each tire in the mode according to the preset no-load correction coefficient, a gear ratio of the wheel speed sensors of the first front and rear wheel sets and an actual pulse number of each tire; calculating the relative rolling radius characteristic of each tire according to the standard pulse number of each tire; and the relative rolling radius characteristic of each tire is compared with a first preset threshold value, and under the condition that the relative rolling radius characteristic of any tire is larger than the first preset threshold value, it is judged that the corresponding tire of the vehicle is in an underpressure state. Therefore, the problems of missing report and false report in the existing monitoring technology are solved, and the tire pressure monitoring accuracy is improved.

A pressure measuring device for a tyre includes an electronic circuit distributed over a first face and a second face of an electronic board and comprising a pressure sensor mounted on the first face of said electronic board; an antenna connected to the electronic circuit; a first housing part covering the first face such that together they delimit a first volume, and comprising channels fluidically connecting the first volume to the outside; a second housing part covering the second face such that together they delimit a second volume, and having a base for resting against an inner surface of a tread of the tyre, the second housing part being arranged such that the antenna projects laterally with respect to said second housing part and the housing has a centre of gravity located in the second volume spaced apart from the electronic board.

The invention discloses a method for detecting the soil compaction degree of an agricultural tire, solves the problem of how to reduce the adverse consequence of soil compaction, and belongs to the field of agricultural machinery experiments. The method comprises the following steps: paving a pressure sensing film on soil to be detected, pressing a tire on the pressure sensing film at a set roll angle, counting pressure point positions and corresponding pressure values of three areas on the pressure sensing film, and further calculating the pressure sum Pt of each area; obtaining pressure weights wI, wII and wIII of the three regions according to the influence of the roll angle on the pressures of the different regions, and calculating the total pressure PD corresponding to the roll angle according to the formula: PD = PIwI + PIIwII + PIIIwIII; the total pressure PD corresponding to different roll angles theta D is obtained, and the total grounding pressure # imgabs0 # wD is calculated as the influence weight of the roll angles theta D; and calculating the total compaction degree C according to the PZ. According to the method, the influence mechanism of different roll angles of the tire on the ground pressure distribution and the soil compaction degree is quantified, and a quantitative basis is provided for optimizing the tire width, the tire pressure and mechanical operation conditions.

The invention relates to the technical field of wireless communication, and discloses an anti-interference tire pressure sensor pairing method for a whole vehicle production line, which comprises the following steps: S101, sending a low-frequency instruction to a to-be-paired tire pressure sensor through a low-frequency trigger; s102, generating unique authentication data after the tire pressure sensor receives the low-frequency instruction, and feeding back the unique authentication data to the low-frequency trigger through a high-frequency signal; s103, the low-frequency trigger extracts signal features, and after validity and rolling code matching are judged, secondary authentication is carried out; generating authentication response data through the secondary random challenge code, and verifying the authentication response data; if the verification is passed, determining that the matching is successful; s104, writing the verified tire pressure sensor identification data into a tire pressure detection control unit, and carrying out secondary consistency verification; and S105, the tire pressure detection control unit compares the high-frequency analog signal with the tire pressure sensor identification data, and if the result is consistent, pairing is confirmed. According to the invention, high-reliability automatic pairing in a production line environment is realized.

The invention discloses a wheel looseness early warning method and device, a medium and a vehicle, and is applied to the technical field of vehicle control, and the method comprises the steps: obtaining a wheel image, wheel attribute data and driving attribute data of the vehicle; according to the wheel image and the wheel attribute data, target tire pressure detection information and target fastening detection information of the vehicle are obtained; wherein the target tire pressure detection information is used for indicating whether the tire pressure of the wheel is normal or not, and the target fastening detection information is used for indicating whether the mechanical structure of the wheel is fastened or not; if the target tire pressure detection information is used for indicating that the tire pressure of the wheel is abnormal, and / or the target fastening detection information is used for indicating that the mechanical structure of the wheel is not fastened, wheel movement track data of the vehicle is obtained according to the wheel image, the wheel attribute data and the driving attribute data; and based on the wheel movement track data, performing wheel looseness early warning processing on the vehicle. According to the invention, the accuracy of wheel loosening early warning can be effectively improved.

The invention relates to a vehicle wading early warning system, which captures a real-time video stream of a road surface around a vehicle through a camera module, and extracts road conditions, waterlogging depth, weather changes and topographic features from the video stream in combination with an intelligent video analysis module based on a convolutional neural network (CNN) and a Transform architecture. The system queries historical data and real-time weather information through networking, analyzes the distance between a vehicle chassis and the ground and tire pressure changes, performs real-time wading risk assessment in combination with the accumulated water depth, can predict the change trend of the accumulated water depth through an accumulated water dynamic change prediction module, provides an early warning function, and improves the wading risk of a vehicle. The cross-motorcade wading early warning module enables multiple vehicles to share real-time wading information based on V2V communication and improves the collaborative early warning capability of the motorcade, and the satellite communication module sends compressed pictures, GPS position information and distress signals to a rescue center at regular time when the vehicles are in danger and synchronizes data to a cloud end during normal operation to provide support for subsequent rescue.

The invention relates to a TPMS-based heat exchanger design method, device, equipment and medium, and belongs to the technical field of porous materials.The TPMS-based heat exchanger design method comprises the steps that an implicit function expression of a TPMS is determined, a TPMS curved surface is constructed based on the implicit function expression, the TPMS curved surface is deviated by a preset deviation amount towards one side or two sides, a first TPMS entity structure is obtained, and a second TPMS entity structure is obtained; with the maximum structural strength and light weight of the heat exchanger as targets, parameters of the implicit function expression of the first TPMS entity structure are subjected to gradient adjustment through a Ramp function, and a second TPMS entity structure is obtained; the optimal performance of the heat exchanger serves as the target, smooth transition is conducted on the fusion area in the second TPMS entity structure through the Sigmoid function so as to complete the design of the heat exchanger, the heat dissipation efficiency and the structural strength of the heat exchanger are improved, and the pressure drop of the heat exchanger is reduced.

The invention discloses a rear wheel active steering control method and system and electronic equipment, and relates to the technical field of vehicle engineering.The rear wheel active steering control method comprises the steps that the required rear wheel steering angle of current steering of a vehicle is determined, and the vehicle has the rear wheel active steering function; according to the required rear wheel turning angle, the current vehicle speed, the vehicle load, the rear wheel tire pressure, the rear wheel end torque and the vehicle chassis parameters, the required rack force for active steering of the rear wheels is determined; if the required rack force exceeds the rack force threshold value, whether the vehicle is currently in a strong required steering scene or not is judged; if the vehicle is not in the strong demand steering scene currently, the demand rear wheel steering angle is limited to a steering angle boundary value, and the steering angle boundary value is the rear wheel steering angle corresponding to the rack force boundary value at the current vehicle speed; and performing active steering of the rear wheels according to the corner boundary value. By limiting the rear wheel turning angle, the required rack force is limited under the condition of normal steering of the vehicle, and the influence of the generated required rack force on the rear axle assembly during steering according to the required rear wheel turning angle is reduced.

The invention belongs to the technical field of tire detection, and particularly relates to a full-automatic tire pressure detection device for an electric bicycle tire, the full-automatic tire pressure detection device comprises a base, a clamping mechanism, a lifting mechanism and a detection mechanism, the base is rotatably connected with a rotating disc; the lifting mechanism is used for driving the detection mechanism to lift, the detection mechanism comprises a connecting seat, and a positioning plate is connected below the connecting seat; the guide frame is vertically and fixedly connected with the positioning plate; the guide frame is connected with a movable seat, the movable seat is fixedly connected with a fixed plate, and the fixed plate is connected with a detection joint matched with a tire valve; the detector is connected with the detection joint through an air pipe; the clamping mechanism drives the tire to rotate, the inflating valve is rotated to the position below the detection mechanism, the lifting mechanism drives the detection mechanism to descend, in the descending process, the detection connector is automatically connected with the tire inflating valve in an aligned mode, and therefore the tire pressure is automatically detected, and the detection efficiency is high.

The application discloses an antenna structure for a Bluetooth sensor in a TPMS, including an antenna board and a Bluetooth antenna arranged on the antenna board, where the Bluetooth antenna is an IFA with a backbone distributed in a straight line or a backbone distributed in a serpentine shape; where the antenna board is a PCB, including a ground pin and a signal feed point protruded from an edge of the antenna board; and where the ground pin and the signal feed point are connected with the Bluetooth antenna. The present application further discloses a Bluetooth sensor in a TPMS, including a battery, a tire pressure sensor main board, and the antenna structure as described above, where the antenna structure is vertically installed on the tire pressure sensor main board.

The invention relates to a multifunctional tire monitoring method and system capable of sensing tire parameters, and the method comprises the steps: firstly, obtaining tire temperature, tire pressure and acceleration data of tires at all wheel positions in real time through a tire sensor, and transmitting the tire temperature, tire pressure and acceleration data to a tire pressure controller; secondly, the tire pressure controller obtains the tire load of the tire at each wheel position according to tire temperature, tire pressure and acceleration data processing; then, the calibrated tire pressure corresponding to the tire load of the tire at each wheel position is inquired, and the calibrated tire pressure is compared with the real-time tire pressure; when the absolute value of the difference value between the calibrated tire pressure and the real-time tire pressure exceeds a set threshold value, the tire load and the difference value are sent to an inflation and deflation controller; and finally, the inflation and deflation controller performs inflation and deflation control on the tire according to the difference value, so that the real-time tire pressure of the tire tends to the calibrated tire pressure. The tire pressure of the tire can be adjusted in real time according to the load change of the tire, the abnormal wear of the tire, especially the wear of a tire shoulder, can be effectively reduced, the average service life of the tire is prolonged, and the cost is saved.

The invention relates to a prompting method and device, a vehicle, a medium and a program product. The prompting method comprises the steps that tire pressure information of a tire is obtained; analyzing the tire sound signal acquired by the sound acquisition device, and determining tire noise information; and executing tire information prompt according to the tire noise information and the tire pressure information. Tire detection is performed in combination with the tire sound signal and the tire pressure information, so that the accuracy and reliability of tire detection are improved, and the accuracy of tire information prompt is improved.

The invention discloses a wireless relay method, system and equipment for commercial vehicle tire pressure monitoring and a medium, relates to the technical field of commercial vehicle tire pressure monitoring, and solves the problems of poor system adaptability and unreliable real-time alarm caused by the fact that existing commercial vehicle tire pressure monitoring needs trailer transformation and wireless transmission is easy to conflict. The method specifically comprises the steps that ACL connection is established between a tire pressure receiving node and a wireless relay node, and channel scheduling parameters and tire pressure sensor working parameters are issued to the wireless relay node; the wireless relay node sends a report request message to the tire pressure sensor on a specified channel according to a preset period; after each tire pressure sensor receives the message, reporting tire pressure monitoring data in the exclusive response time slot, and if the tire pressure sensor detects a tire burst early warning event, repeatedly reporting the tire pressure monitoring data in the tire burst reporting time slot; the wireless relay node packages the data and sends the data to a tire pressure receiving node for receiving and processing, and if it is judged that a tire burst early warning event exists, an alarm is given within 100 ms. The method is used for monitoring the tire pressure of the commercial vehicle.

The invention discloses a driving capability improvement control method and system for an unmanned vehicle. The method comprises the step of realizing road condition perception and tire pressure optimization through vehicle cloud cooperation. A front vehicle collects road surface data and uploads the road surface data to a cloud server after preprocessing, and the server carries out aggregation analysis and constructs and updates a road surface state map. The rear vehicle requests road condition data, verification is carried out, remote data and local data are fused after weight distribution, and road surface state estimation is generated. And calculating a road surface friction coefficient and a weather influence factor based on the fused data, processing tire temperature data, monitoring a load-carrying vehicle speed, formulating an adjusting strategy, and carrying out modeling solving to obtain the optimal tire pressure. And an adjusting strategy is generated according to the optimal tire pressure, differential tire pressure control is implemented, adjustment is executed through closed-loop and predictive control, the effect is monitored in real time, and data are uploaded to a cloud optimization system. The control stability and trafficability of the vehicle under complex road conditions are effectively improved, and driving safety and riding comfort are guaranteed.

The invention provides a gantry crane tire monitoring method, and relates to the technical field of tire pressure monitoring. Comprising the following steps: S1, arranging a pressure sensor for monitoring tire pressure in each tire of the gantry crane; s2, all the pressure sensors upload monitored tire pressure data to the cloud platform every first set time; s3, after the cloud platform receives the tire pressure, a plurality of first sequences are constructed, and the first sequences comprise tire pressure data, uploaded at different times, of the same tire; s4, whether tire pressure abnormity exists or not is judged according to the first sequence; and S5, if the tire pressure is abnormal, sending an automatic inflation and deflation request or sending a tire damage alarm. According to the invention, automatic monitoring of the tire pressure is realized, different conditions of abnormal tire pressure can be accurately judged, and corresponding automatic inflation and deflation are carried out or a maintenance alarm is given out.

The invention relates to a vehicle static tire pressure monitoring method and device and a self-powered system thereof.The method comprises the steps that vehicle state information is obtained, and whether a vehicle enters a static state or not is judged according to the vehicle state information; after it is judged that the vehicle enters the static state, the tire pressure monitoring mode is switched to a static mode from a dynamic mode, tire pressure and temperature data are collected in the static mode, and the sampling frequency of the static mode is higher than that of the dynamic mode; energy support is provided for data acquisition in a static mode through a self-power supply system, and the self-power supply system at least partially converts mechanical energy generated during tire deformation into electric energy; according to the tire pressure and temperature data, the actual air leakage rate of the tire is determined through a temperature compensation algorithm; and triggering early warning information of a corresponding level according to the actual gas leakage rate.