Vehicle tire monitoring method and system and electronic equipment

Abstract

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.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a vehicle tire monitoring method, system and electronic equipment. Background Art

[0002] With the progress of society and the continuous improvement of people's living standards, vehicles have gradually integrated into people's lives and become an indispensable means of transportation. When a vehicle has a tire blowout during driving, it is very likely to cause a serious traffic accident. For example, according to statistical data, the probability of a tire blowout when driving at high speed is approximately between 0.1% and 0.5%. This data does not mean that a tire blowout is a rare event, because the consequences of a tire blowout accident are often very serious, especially when the speed reaches more than 120km / h, the mortality rate of a tire blowout is close to 100%.

[0003] However, in the related art, the vehicle tire monitoring system mainly monitors the tire pressure of the system, and the monitoring parameters are too single and cannot accurately reflect or predict the status of the tire; at the same time, most car owners lack risk management experience, and when the tire bursts or is about to burst, they cannot take correct and effective countermeasures, which easily leads to accidents. In view of this, a solution is needed that can accurately judge the tire status and make emergency control when abnormalities are detected. Summary of the invention

[0004] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0005] In view of the above-mentioned shortcomings of the prior art, the present application provides a vehicle tire monitoring method, system and electronic device to accurately monitor the status of the tire and promptly respond to the problems of the corresponding emergency control solution.

[0006] The first aspect of the present application provides a vehicle tire monitoring method, comprising: obtaining tire information of a vehicle, the tire information comprising a tire temperature value, a tire pressure value, a wear value and a slip rate; if it is monitored that the tire includes at least one of the following situations, calculating a standardized value of an indicator under the current situation; wherein, if the tire pressure is determined to be abnormal or / and the tire pressure difference is abnormal according to the tire pressure value, if the tire temperature is determined to be abnormal or / and the tire temperature difference is abnormal according to the tire temperature value, if the wear is determined to be abnormal according to the wear value, if the slip rate is determined to be abnormal according to the slip rate, if it is determined that the numerical change between the tire pressure and the tire temperature is not positively correlated, if it is determined that the numerical change between the tire pressure difference and the tire temperature difference is not positively correlated, 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 indicator and the standardized value to determine a comprehensive index; judging the comprehensive index to determine the state of the tire, so as to execute an emergency control strategy for response.

[0007] In some possible embodiments of the present application, the tire information also includes ambient temperature; if it is monitored that the tire includes at least one of the following situations, it also includes: if the ambient temperature is greater than a first preset temperature, executing a first monitoring strategy for monitoring; if the ambient temperature is less than a second preset temperature, executing a second monitoring strategy for monitoring, if the ambient temperature is greater than the second preset temperature and less than the first preset temperature, executing a third monitoring strategy for monitoring, wherein the first preset temperature is greater than the second preset temperature, the first monitoring strategy is a summer monitoring standard, the second monitoring strategy is a winter monitoring standard, and the third monitoring strategy is a normal monitoring standard.

[0008] In some possible embodiments of the present application, the comprehensive index is judged to determine the state of the tire, and an emergency control strategy is executed to respond, including: if the comprehensive index is in a first preset interval, the tire is determined to be in a normal state; if the comprehensive index is in a second preset interval, the tire is determined to be in a low-risk state; if the comprehensive index is in a third preset interval, the tire is determined to be in a high-risk state, and a first emergency control strategy is executed to respond; if the comprehensive index is in a fourth preset interval, the tire is determined to be in a blowout state, and a second emergency control strategy is executed to respond; wherein the score ranges represented by the first preset interval, the second preset interval, the third preset interval, and the fourth preset interval increase in sequence.

[0009] In some possible embodiments of the present application, the first emergency control strategy includes: displaying the first emergency measure icon on the vehicle instrument; turning on the double flash lights, reminding the driver to hold the steering wheel tightly with both hands and that the tire is currently in a high-risk state by voice broadcast, and sending a query request to the driver whether to stop the car; if the parking confirmation message is not received within the preset time period, the vehicle is controlled to stop the voice broadcast and continue to display the first emergency measure icon. Display the first emergency measure icon on the vehicle instrument; turning on the double flash lights, reminding the driver to hold the steering wheel tightly with both hands by voice broadcast, and that the tire is currently in a high-risk state, and sending a query request to the driver whether to stop the car; if the parking confirmation message is received within the preset time period, the vehicle is controlled to keep going straight and reduce the speed so that the vehicle can intelligently drive to the side of the road and park.

[0010] In some possible embodiments of the present application, the second emergency control strategy includes: displaying a second emergency measure icon on the vehicle instrument; turning on the double flash lights, prompting the driver to hold the steering wheel with both hands in a voice broadcast, and controlling the vehicle's emergency brakes and accelerators to be invalid and to keep slowing down and going straight, so that the vehicle can drive intelligently to the side of the road and park; after the vehicle stops, calling an emergency number through the vehicle to call for rescue services, and sending a tire blowout message to the owner of the vehicle.

[0011] In some possible embodiments of the present application, if the tire is monitored to include at least one of the following situations, the standardized value of the indicator under the current situation is calculated, including: monitoring the indicator under each situation, comparing the indicator under any situation with the abnormal interval corresponding to the preset indicator, standardizing each indicator according to the comparison result, and calculating the standardized value of each indicator.

[0012] In some possible embodiments of the present application, if it is monitored that the tire includes at least one of the following situations, the standardized value of the indicator in the current situation is calculated, including: monitoring the indicator in each situation, comparing the indicator in any situation with the abnormal interval corresponding to the preset indicator, if the current indicator is outside the abnormal interval corresponding to the preset indicator, then determining that the current indicator is normal, and generating a first score value representing the standardized value; if the current indicator is within the abnormal interval corresponding to the preset indicator, then determining that the current indicator is abnormal, and generating a second score value representing the standardized value of the current indicator, the second score value is much larger than the first score value, and the greater the degree of abnormality presented by the second score value in the abnormal interval, the greater the value assigned.

[0013] In some possible embodiments of the present application, obtaining tire information of a vehicle includes: obtaining a tire pressure signal using a tire pressure sensor, performing Kalman filtering on the tire pressure signal, and determining a tire pressure value; obtaining a tire temperature signal using a tire temperature sensor, performing Kalman filtering on the tire temperature signal, and determining a tire temperature value; obtaining an acceleration signal using an acceleration sensor, performing Kalman filtering on the acceleration signal, integrating the filtered acceleration signal to obtain a wheel speed, calculating a difference between the vehicle speed and the wheel speed, and determining the slip rate based on a ratio of the difference to the vehicle speed; performing feature extraction on the filtered acceleration signal to obtain wear characteristics, the wear characteristics including acceleration peaks, vibration patterns, and periods; and inputting the wear characteristics into a preset tire wear prediction model to determine the wear value.

[0014] The second aspect of the present application also provides a vehicle tire monitoring system, including: an information acquisition module, used to acquire vehicle tire information, the tire information including tire temperature value, tire pressure value, wear value and slip rate; an index monitoring module, used to calculate the standardized value of the index under the current situation if the tire is monitored to include at least one of the following situations; wherein, if the tire pressure is determined to be abnormal or / and the tire pressure difference is abnormal according to the tire pressure value, if the tire temperature is determined to be abnormal or / and the tire temperature difference is abnormal according to the tire temperature value, if the wear is determined to be abnormal according to the wear value, if the slip rate is determined to be abnormal according to the slip rate, if it is determined that the numerical change between the tire pressure and the tire temperature is not positively correlated, if it is determined that the numerical change between the tire pressure difference and the tire temperature difference is not positively correlated, if it is determined that the numerical change between the slip rate and the wear value is not positively correlated; a comprehensive index determination module, used to perform weighted calculation according to the weight coefficient corresponding to the index and the standardized value to determine the comprehensive index; a state determination and response module, used to judge the comprehensive index, determine the state of the tire, and respond to execute the emergency control strategy.

[0015] The third aspect of the present application also provides an electronic device, including: a processor and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the electronic device performs the above method.

[0016] The beneficial effects of the present application are as follows: by acquiring tire information of a vehicle, since the tire information includes tire temperature value, tire pressure value, wear value and slip rate, by collecting multi-dimensional data of tires, the performance, safety and service life of the tires can be fully monitored, which is conducive to timely discovery of potential problems; if it is monitored that the tire includes at least one of the following situations, the standardized value of the indicator under the current situation is calculated; wherein, if the tire pressure is abnormal or / and the tire pressure difference is abnormal according to the tire pressure value, if the tire temperature is abnormal or / and the tire temperature difference is abnormal according to the tire temperature value, if the wear is abnormal according to the wear value, if the slip rate is abnormal according to the slip rate, if it is determined that the numerical change between the tire pressure and the tire temperature is not positively correlated, if it is determined that the numerical change between the tire pressure difference and the tire temperature difference is not positively correlated, if it is determined that the numerical change between the slip rate and the wear value is not positively correlated; in this way, not only various abnormal states of the tire are identified, but also the abnormal detection range of the tire is improved, and a comprehensive index is determined by weighted calculation based on the weight coefficient corresponding to the indicator and the standardized value; the comprehensive index is judged to determine the state of the tire, so as to execute the emergency control strategy for response. Through the above method, the abnormality of a single parameter is taken into account, and by integrating the mutual influence of multiple parameters, the tire status can be reflected more comprehensively and accurately. At the same time, by responding to emergency control strategies in a timely manner, the risk of traffic accidents caused by tire failure is avoided, which not only improves driving comfort but also ensures driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a flow chart of a vehicle tire monitoring method in an embodiment of the present application;

[0018] Figure 2 is another flow chart of another vehicle tire monitoring method in an embodiment of the present application;

[0019] Figure 3 It is a schematic diagram of a high-risk state response process in a vehicle tire monitoring method in an embodiment of the present application;

[0020] Figure 4 It is a schematic diagram of a tire blowout state response process in a vehicle tire monitoring method in an embodiment of the present application;

[0021] Figure 5 is a structural schematic diagram of a system architecture for implementing a vehicle tire monitoring method in an embodiment of the present application;

[0022] Figure 6 It is a structural schematic diagram of an emergency measure response for implementing a vehicle tire monitoring method in an embodiment of the present application;

[0023] Figure 7is a structural schematic diagram of a vehicle tire monitoring system in an embodiment of the present application;

[0024] Figure 8 It is a schematic diagram of the structure of an electronic device in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and sub-samples in the embodiments can be combined with each other without conflict.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0027] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0028] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0029] Unless otherwise stated, the term "plurality" means two or more.

[0030] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0031] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0032] Combination Figure 1 As shown, the embodiment of the present disclosure provides a flow chart of a vehicle tire monitoring method, including:

[0033] Step S101, obtaining tire information of the vehicle, wherein the tire information includes tire temperature value, tire pressure value, wear value and slip rate;

[0034] It should be understood that vehicles can be divided into fuel vehicles, pure electric vehicles, hybrid vehicles, etc. according to their driving energy. For example, hybrid vehicles are extended-range electric vehicles or plug-in hybrid vehicles. Vehicles can also be divided into ordinary passenger vehicles and large vehicles such as trucks or buses according to their uses.

[0035] Tire information mainly refers to tire data collected by various sensors integrated on vehicle tires. The tire information includes tire temperature, tire pressure, wear and slip rate.

[0036] Optionally, obtain tire information of the vehicle, including:

[0037] The tire pressure sensor is used to obtain the tire pressure signal, and the tire pressure signal is subjected to Kalman filtering to determine the tire pressure value; in a specific example, the tire pressure sensor sends the measured tire pressure to the body controller in a wireless form, so that the owner can monitor the vehicle's tire pressure and the tire pressure difference between each tire in real time. The tire pressure sensor is installed inside the tire or at the valve position to ensure accurate monitoring of the tire pressure and temperature, which helps protect the sensor from interference from external conditions and is in direct contact with the air pressure inside the tire, thereby providing more accurate measurement data.

[0038] The tire temperature sensor is used to obtain the tire temperature signal, and the tire temperature signal is subjected to Kalman filtering to determine the tire temperature value; in a specific example, the tire temperature sensor sends the measured temperature data to the body controller in a wireless form, so that the owner can monitor the vehicle's tire temperature and the tire temperature difference between each tire in real time. Among them, installing the tire temperature sensor on the inside of the tire helps the sensor to more accurately monitor the temperature inside the tire, and at the same time, ensures direct contact between the sensor and the internal temperature of the tire, thereby improving the accuracy of monitoring. In addition, the tire temperature sensor and the tire pressure sensor work simultaneously to jointly monitor the temperature and pressure of the tire to ensure driving safety.

[0039] Acquiring an acceleration signal using an acceleration sensor, performing Kalman filtering on the acceleration signal, integrating the filtered acceleration signal to obtain a wheel speed, calculating a difference between a vehicle speed and the wheel speed, and determining the slip rate based on a ratio of the difference to the vehicle speed;

[0040] The filtered acceleration signal is subjected to feature extraction to obtain wear features, wherein the wear features include acceleration peak value, vibration mode and cycle; the wear features are input into a preset tire wear prediction model to determine the wear value.

[0041] In a specific example, an acceleration sensor uses the piezoelectric effect to measure acceleration. The acceleration sensor is installed near the tire or on the vehicle chassis to monitor the acceleration changes of the vehicle during driving, which is crucial for the vehicle's dynamic stability control, anti-lock braking system and other safety systems. By monitoring the acceleration of the tire in real time, the braking force and driving force of the vehicle can be adjusted to optimize the vehicle's handling and safety.

[0042] In addition, the acceleration sensor is also used to monitor the tire slip rate, that is, the proportion of tire sliding during braking. When the tire deceleration or slip rate exceeds or falls below the limit value, the vehicle's electronic control unit adjusts the brake pressure based on the received signal, thereby improving the braking effect, preventing wheel locking, and keeping the vehicle's braking system in optimal operating condition.

[0043] It should be noted that the present application includes not only tire temperature, tire pressure, wear and slip rate, but also ambient temperature, which are all pre-processed by Kalman filtering. The Kalman Filtering algorithm is used to convert the filter signal fed back by the sensor into real-time data. Kalman filtering is an algorithm that uses the linear system state equation and the system input and output observation data to optimally estimate the system state. It can be used in any dynamic system containing uncertain information to predict the position of the target and use the prediction results to correct the tracked target. It has a very good optimization and filtering effect for linear systems that change rapidly and are updated in real time. In this way, noise and interference information in the sensor data are filtered out to ensure the accuracy of the collected sensor data.

[0044] Step S102, if it is monitored that the tire includes at least one of the following situations, then calculate the standardized value of the indicator under the current situation; wherein, if it is determined according to the tire pressure value that the tire pressure is abnormal or / and the tire pressure difference is abnormal, if it is determined according to the tire temperature value that the tire temperature is abnormal or / and the tire temperature difference is abnormal, if it is determined according to the wear value that the wear is abnormal, if it is determined according to the slip rate that the slip rate is abnormal, if it is determined that the numerical change between the tire pressure and the tire temperature is not positively correlated, if it is determined that the numerical change between the tire pressure difference and the tire temperature difference is not positively correlated, if it is determined that the numerical change between the slip rate and the wear value is not positively correlated;

[0045] Optionally, if it is detected that the tire has at least one of the following conditions, a standardized value of the indicator under the current condition is calculated, including:

[0046] In a first implementation mode, the indicators in each situation are monitored, the indicators in any situation are compared with the abnormal intervals corresponding to the preset indicators, each indicator is standardized according to the comparison results, and the standardized value of each indicator is calculated; or,

[0047] The second implementation method is to monitor the indicators in each situation, and compare the indicators in any situation with the abnormal interval corresponding to the preset indicators. If the current indicator is outside the abnormal interval corresponding to the preset indicator, it is determined that the current indicator is normal, and a first score value representing the standardized value is generated. If the current indicator is within the abnormal interval corresponding to the preset indicator, it is determined that the current indicator is abnormal, and a second score value representing the standardized value of the current indicator is generated. The second score value is much larger than the first score value, and the greater the degree of abnormality of the second score value in the abnormal interval, the greater the value assigned.

[0048] In the first embodiment, the indicators in each situation can be directly standardized (i.e., quantified). For example, if the indicator is normal, the score is zero; if the indicator is abnormal, the score is one. Since each indicator represents different data dimensions, it has different corresponding abnormal judgment standards (abnormal intervals), that is, quantification is performed with reference to the judgment results, which will not be elaborated here.

[0049] In the second embodiment, it can be understood that if the indicator is normal, the score is a first score value, such as zero; if the indicator is abnormal, the score is a second score value, such as one, wherein it should be emphasized that the second score value will be assigned a larger value according to the degree of abnormality presented by the abnormal interval. For example, the degree of abnormality can be judged by the ratio between the part of the abnormality that exceeds the abnormal interval and the abnormal interval. For example, quantification is performed with reference to the segmented assignment. The first score value and the second score value are the standardized values ​​of the present application.

[0050] Through the above method, each indicator is quantified so that each indicator can be comparable in magnitude and unit. At the same time, it is helpful to judge the tire status from the overall perspective in the subsequent process.

[0051] For example, in the present application, it is determined whether the state of any one of the plurality of tires is abnormal based on the tire data. However, it is not limited to only one of the plurality of tires, and can be applied to the remaining plurality of tires.

[0052] For example, the controller in the vehicle may calculate the air pressure difference between the plurality of tires based on the air pressure included in the tire data, and when the air pressure difference is formed to be equal to or greater than a preset difference value, it may be determined that any one of the plurality of tires is abnormal, and a warning signal may be output. In other words, by comparing the air pressure of the first tire data with the air pressure of the second tire data, the air pressure difference between the tires may be calculated. For example, the preset difference value may be set to 10%, but is not limited thereto.

[0053] For another example, the air pressure difference calculated by the controller can be calculated as the air pressure difference between at least some tires. For example, the air pressure difference between the tires located in front of the vehicle can be calculated, or the air pressure difference between the tires located behind the vehicle can be calculated and compared with a preset difference.

[0054] In addition, when the difference between the air pressure and the preset appropriate air pressure is equal to or greater than the set difference, it can be determined that the state of any one of the plurality of tires is abnormal and a warning signal is output. The appropriate air pressure may be the appropriate air pressure of any one of the plurality of tires set during the production process of the tire or the appropriate air pressure provided by the vehicle. For example, the set difference may be 20%, but is not limited thereto.

[0055] In addition, when the temperature included in the tire data is equal to or greater than a preset temperature, it may be determined that the state of any one of the plurality of tires is abnormal and the output of a warning signal may be controlled. For example, the preset temperature may be set to approximately 90°C.

[0056] In addition, the controller may calculate a temperature variation of at least one of the plurality of tires based on the temperature included in the tire data. For example, the controller may measure the temperature variation by the temperature included in at least some of the received plurality of tire data at a specific time.

[0057] When the temperature variation is equal to or greater than a preset temperature variation, the controller may determine that the state of any one of the plurality of tires is abnormal and may control the output of a warning signal. For example, the preset temperature variation may be set to approximately 20° C. Meanwhile, in another embodiment, even if the temperature is less than or equal to the preset temperature, when the temperature variation is equal to or greater than the preset temperature variation, the controller outputs a warning signal.

[0058] Similarly, it can also be determined that the numerical changes between the tire pressure and the tire temperature are not positively correlated, that the numerical changes between the tire pressure difference and the tire temperature difference are not positively correlated, and that the numerical changes between the slip rate and the wear value are not positively correlated, which will not be elaborated here one by one.

[0059] Step S103, performing weighted calculation according to the weight coefficient corresponding to the indicator and the standardized value to determine a comprehensive index;

[0060] It should be understood that the weight coefficients can be evenly distributed according to the number of indices, and corresponding weights can also be allocated according to the importance and influence of each indicator.

[0061] In a specific example, when calculating a certain type of index, all the indexes are calculated by weighted summation by multiplying the weight coefficient of the index of this type by the standardized value, so as to obtain the comprehensive index of the tire.

[0062] Step S104, judging the comprehensive index, determining the state of the tire, and executing an emergency control strategy to respond.

[0063] Optionally, judging the comprehensive index and determining the state of the tire to execute an emergency control strategy for response includes:

[0064] If the comprehensive index is within a first preset range, determining that the tire is in a normal state;

[0065] If the comprehensive index is in a second preset interval, determining that the tire is in a low-risk state;

[0066] If the comprehensive index is in a third preset interval, determining that the tire is in a high-risk state, and executing a first emergency control strategy to respond;

[0067] If the comprehensive index is in a fourth preset interval, determining that the tire is in a blowout state, and executing a second emergency control strategy to respond;

[0068] The score ranges represented by the first preset interval, the second preset interval, the third preset interval and the fourth preset interval increase in sequence.

[0069] In some embodiments, the first preset interval, the second preset interval, the third preset interval and the fourth preset interval are increased in sequence. For example, three dividing points A, B, and C are set to divide the entire score interval to form four intervals to map the four preset intervals, that is, less than A is the first preset interval, greater than A and less than B is the second preset interval, greater than B and less than C is the third preset interval, and greater than C is the fourth preset interval.

[0070] It should be noted that when the tire is determined to be in a normal state or a low-risk state, it is only necessary to send the monitored tire data to the vehicle system for display, and there is no need to make an emergency control strategy to respond. If the tire is determined to be in a high-risk state, the first emergency control strategy is executed to respond; if the tire is determined to be in a blowout state, the second emergency control strategy is executed to respond.

[0071] Through the above method, the abnormality of a single parameter is taken into account, and by integrating the mutual influence of multiple parameters, the tire status can be reflected more comprehensively and accurately. At the same time, by responding to emergency control strategies in a timely manner, the risk of traffic accidents caused by tire failure is avoided, which not only improves driving comfort but also ensures driving safety.

[0072] Optionally, the tire information also includes ambient temperature; if it is monitored that the tire includes at least one of the following conditions, it also includes:

[0073] If the ambient temperature is greater than the first preset temperature, the first monitoring strategy is executed for monitoring; if the ambient temperature is less than the second preset temperature, the second monitoring strategy is executed for monitoring; if the ambient temperature is greater than the second preset temperature and less than the first preset temperature, the third monitoring strategy is executed for monitoring, wherein the first preset temperature is greater than the second preset temperature, the first monitoring strategy is the summer monitoring standard, the second monitoring strategy is the winter monitoring standard, and the third monitoring strategy is the normal monitoring standard.

[0074] Among them, the ambient temperature sensor is used to collect the ambient temperature of the vehicle. For example, the ambient temperature sensor sends the measured temperature data to the body controller in a wireless form, so that the owner can monitor the ambient temperature outside the vehicle in real time. The ambient temperature sensor is installed on the inside of the bumper. In this way, it can be ensured that the sensor can accurately capture the temperature changes of the outside world without being directly affected by the engine or other heat sources, thereby providing more accurate temperature data.

[0075] It should be noted that the current monitoring strategy is switched according to the temperature range of the ambient temperature. As described above, the monitoring strategies are divided into three categories: the first category is the summer monitoring standard, the second category is the winter monitoring standard, and the third category is the normal monitoring standard; the monitoring strategy is switched based on the actual ambient temperature. For example, the higher the ambient temperature, the higher the real-time data of tire pressure and temperature will be. At this time, the summer monitoring standard should be used, which is 0.1 bar lower than the standard tire pressure; for another example, when the ambient temperature is low, the real-time data of tire pressure and temperature will also be low. At this time, the winter monitoring standard should be used, which is 0.2 bar higher than the standard tire pressure.

[0076] It should also be noted that the first preset temperature and the second preset temperature can be set based on experience. For example, the first preset temperature is 30 degrees Celsius, that is, higher than 30 degrees Celsius, and the summer monitoring standard is adopted; the second preset temperature is 10 degrees Celsius, that is, lower than 10 degrees Celsius, and the winter monitoring standard is adopted.

[0077] Through the above method, more sophisticated monitoring standards can be used to monitor various parameters of vehicle tires according to different ambient temperatures. In this way, the monitoring reference standards can be dynamically adjusted. On the one hand, it is more in line with the physical properties of the current tires; on the other hand, various abnormalities of the tires can also be monitored more accurately.

[0078] Optionally, see Figure 3 , is another flow chart of another vehicle tire monitoring method in an embodiment of the present application, which is described in detail as follows:

[0079] Step S201, collecting data input, i.e. obtaining tire data;

[0080] Step S202, judging the ambient temperature, if it is higher than 30 degrees, the summer monitoring standard is used, if it is lower than 10 degrees, the winter monitoring standard is used, and the rest are the normal monitoring standards;

[0081] Step S203, judging tire pressure and temperature, and giving an alarm when the values ​​are abnormal, and giving an alarm when the value changes are not positively correlated;

[0082] Step S204, judging the tire pressure difference and the tire temperature difference, and giving an alarm when the values ​​are abnormal, and giving an alarm when the value changes are not positively correlated;

[0083] Step S205, judging the slip rate and wear value, alarming when the slip rate value is abnormal, alarming when the wear value is twice or more of the average wear value, and alarming when the value changes are not positively correlated.

[0084] It should be noted that there is no specific order among step S203, step S204 and step S205 in terms of timing. Meanwhile, if the accuracy of tire status judgment is not considered, at least one condition among step S203, step S204 and step S205 can be selected for judgment, which will not be described in detail here.

[0085] Please refer to FIG. 5, which is a schematic diagram of a system architecture for implementing a vehicle tire monitoring method in an embodiment of the present application;

[0086] Tire pressure: The normal range of tire pressure needs to consider many factors such as season, load, road conditions, material, etc. For example, referring to the tire pressure standard specified in the BT2978-2008 standard: 2.4-2.5bar for ordinary tires, 2.8-2.9bar for reinforced tires, and the maximum pressure is no more than 3.5bar. In winter, the tire pressure needs to be increased by about 0.2bar according to the standard tire pressure, and in summer, the tire pressure needs to be lowered by about 0.1bar than the standard tire pressure. If the road surface is overturned too much, the standard tire pressure needs to be lowered by about 0.1-0.2bar. If the vehicle is fully loaded, the tire pressure standard upper limit needs to be followed, and if it is empty or half-loaded, the standard tire pressure can be followed.

[0087] Tire pressure difference: Tire pressure difference is related to monitoring system error, vehicle load, tire wear, valve core problem, and whether the tire is filled with nitrogen. Generally speaking, it is normal for the tire pressure difference between the left and right tires to be within 0.1 bar, and it is also normal for the tire pressure difference between the front and rear tires to be within 0.2 bar. The tire pressure of the front wheel is generally slightly higher than that of the rear wheel. This is because the front part of the vehicle body is heavier, so the tire pressure of the front wheel is correspondingly higher.

[0088] Tire temperature: The normal range of tire temperature is also affected by factors such as driving speed, road conditions, vehicle load, and external temperature. According to GBT2978-2008 standard, the normal range of tire temperature is 90 to 110 degrees Celsius.

[0089] Tire temperature difference: Tire temperature difference is related to factors such as tire pressure, four-wheel alignment, vehicle load and ground friction. For example, under normal circumstances, a temperature difference of about 10 degrees between tires will not have a significant impact on tire performance. If the temperature difference is within a reasonable range and the temperature of the front wheels remains relatively balanced, it will not affect driving safety.

[0090] Wear value: According to the motor vehicle safety inspection standard, the limit wear value of tires is 6 mm. For example, there are usually tire tread wear indicator marks on the tires. These marks are located at the bottom of the tread grooves and are 6 mm high, which is the legal minimum groove depth. Therefore, when the tire wear exceeds 6 mm, it is necessary to replace it with a new tire.

[0091] Slip rate: The vehicle slip rate refers to the slippage between the tire footprint and the road surface when the tire brakes or accelerates while driving straight. Influencing factors include vehicle load, tire type, real-time road conditions, and braking force. For example, ideally, the car needs to maintain a slip rate of 5% to 10% to ensure the best grip. A slip rate that is too high or too low indicates that the tire has poor grip performance, which may affect acceleration and braking performance, thereby affecting driving safety.

[0092] Ambient temperature: According to statistics, the tire blowout rate in summer is significantly higher than in winter, and high temperature is one of the important factors affecting tire blowout. For example, the daily variation pattern of ambient temperature and road surface temperature is relatively consistent, and the road surface temperature is always higher than the air temperature at any time of the day. This phenomenon is particularly obvious in hot and sunny weather in midsummer, where the average temperature difference between the road surface temperature and the air temperature is about 19°C, and in extreme cases, the maximum temperature difference can reach 27°C to 29°C.

[0093] It should be noted that the seven sets of data collected have the following correlations:

[0094] When the ambient temperature is high, the real-time data of tire pressure and temperature are also high. At this time, the summer monitoring standard should be used, which is 0.1 bar lower than the standard tire pressure. When the ambient temperature is low, the real-time data of tire pressure and temperature are also low. At this time, the winter monitoring standard should be used, which is 0.2 bar higher than the standard tire pressure.

[0095] The tire pressure difference and tire temperature difference are related to the dynamic balance of the vehicle tires. When the tire pressure difference increases, the tire temperature difference also increases. Conversely, when the tire pressure difference decreases, the tire temperature difference also decreases.

[0096] The slip rate and wear value show a proportional relationship, that is, an increase in the slip rate will lead to an increase in the wear value, and conversely, a decrease in the slip rate will lead to a decrease in the wear value.

[0097] In some embodiments, the data abnormalities determined by the collected tire data are the following 11 types:

[0098] 1) Abnormal tire pressure. The tire pressure is lower or higher than the normal value. According to statistics, when the tire pressure is 25% higher than the standard value, the probability of a tire blowout will double; and when the tire pressure is 25% lower than the standard value, the probability of a tire blowout will triple. In this embodiment, in the case of general abnormalities, only the abnormal icon is displayed on the terminal. When the abnormality is in the above two situations, the abnormal icon is displayed on the terminal and the abnormal data is broadcasted by voice.

[0099] 2) Abnormal tire temperature, that is, the temperature of the tire is higher than the normal value. The upper limit of the safe working temperature of the tire is usually 121.1 degrees Celsius. If this limit is exceeded, the risk of tire explosion will increase significantly. In this embodiment, when the tire temperature is higher than the normal value but does not reach 121.1 degrees Celsius, only the abnormal icon is displayed on the terminal; when the tire temperature reaches 121.1 degrees Celsius or above, the abnormal icon is displayed on the terminal, and the abnormal data is broadcasted by voice.

[0100] 3) The changes in tire pressure and temperature values ​​are not positively correlated, and only the icon abnormality is reflected on the terminal display.

[0101] 4) When the tire pressure difference between the left and right tires exceeds 0.1 bar and the tire pressure difference between the front and rear tires exceeds 0.2 bar, only the abnormal icon will be displayed on the terminal; when the tire pressure difference between the left and right tires exceeds 0.2 bar and the tire pressure difference between the front and rear tires exceeds 0.4 bar, the abnormal icon will be displayed on the terminal and the abnormal data will be announced by voice.

[0102] 5) Abnormal tire temperature difference: When the temperature difference between tires exceeds 10 degrees but does not exceed 20 degrees, only the abnormal icon will be displayed on the terminal; when the temperature difference exceeds 20 degrees, the abnormal icon will be displayed on the terminal and the abnormal data will be announced by voice.

[0103] 7) The changes in the tire pressure difference and tire temperature difference values ​​are not positively correlated, and only the icon abnormality is reflected on the terminal display.

[0104] 8) Slip rate is abnormal. When the slip rate is lower than 5% or higher than 10%, only the abnormal icon will be displayed on the terminal; when the slip rate is higher than 30%, the abnormal icon will be displayed on the terminal and the abnormal data will be announced by voice.

[0105] 9) Abnormal wear value. The car's historical wear value is recorded. When the wear value is higher than twice the average wear value, only the abnormal icon will be displayed on the terminal. When the wear value is higher than three times the average wear value, the abnormal icon will be displayed on the terminal and the abnormal data will be announced by voice.

[0106] 10) The changes in the slip rate and wear value are not positively correlated, and only the icon abnormality is reflected on the terminal display.

[0107] 11) Failure to collect tire data indicates that a module in the tire monitoring system is damaged. At this time, the corresponding abnormal icon is displayed on the terminal and the abnormal data is broadcast by voice.

[0108] In this embodiment, a multi-factor index analysis method is used to decompose the data, confirm the tire status and take correct measures. The specific steps are as follows:

[0109] Analyze and determine the total indicators and the multiple factors that affect the total indicators, and determine the logical relationship between the multiple factors. For example, the indicators include tire pressure, tire pressure difference, tire temperature, tire temperature difference, slip rate, wear value, and ambient temperature, among which tire pressure and tire temperature, tire pressure difference and tire temperature difference, slip rate and wear value are all related.

[0110] Weight distribution assigns appropriate weights to different evaluation factors, reflecting the importance of each factor to the final judgment.

[0111] Indicators are standardized to make each indicator comparable in magnitude and unit.

[0112] The comprehensive index is calculated, and the final comprehensive index is calculated by weighted summation method according to the weight of each index and the standardized value. The comprehensive index can reflect the score of the evaluated object on each factor, so as to obtain the final result. The evaluated object of the present invention is the tire itself, and the comprehensive index obtained by calculating each index can distinguish the comprehensive state of the tire.

[0113] In this embodiment, by combining multiple sensor data and intelligent control technology, it is possible to provide effective vehicle control measures after detecting abnormal vehicle tire data, significantly improving the safety and reliability of vehicle driving, having good market prospects and application potential, and worthy of further development and promotion. This application also has the following technical effects:

[0114] First, the compatibility is high. The present invention does not need to use additional sensors to collect redundant information. The sensors that the intelligent vehicle already has can collect information such as tire temperature, tire pressure, acceleration, etc., without any additional hardware costs.

[0115] Second, the application range is wide. In the era of intelligence, all vehicles need to monitor the real-time data of tires;

[0116] Third, to enhance safety, when a vehicle is about to have a tire blowout or a tire burst, intelligent emergency measures are provided to assist the owner in resolving the current situation and avoiding traffic accidents.

[0117] Figure 6 It is a structural schematic diagram of an emergency response for implementing a vehicle tire monitoring method in an embodiment of the present application, including:

[0118] The tire status is divided into four categories: normal status, low-risk status, high-risk status and blowout status. When the tire is in a high-risk status or blowout status, the vehicle will be forced to enter emergency mode and control some modules of the vehicle to prevent the owner from making incorrect behaviors under the influence of panic and causing more serious consequences.

[0119] Optionally, the first emergency control strategy includes:

[0120] Displaying the first emergency measure icon on the vehicle instrument; turning on the hazard lights, reminding the driver to hold the steering wheel tightly with both hands and that the tire is currently in a high-risk state, and sending a query to the driver whether to stop the car; if no parking confirmation information is received within a preset time period, controlling the vehicle to stop the voice broadcast and continuously displaying the first emergency measure icon; or,

[0121] The first emergency measure icon is displayed on the vehicle instrument; the hazard lights are turned on, and the driver is reminded by voice to hold the steering wheel tightly with both hands and that the tire is currently in a high-risk state, and a query request is sent to the driver whether to stop the car; if a parking confirmation message is received within a preset time period, the vehicle is controlled to keep going straight and reduce the speed so that the vehicle can intelligently drive to the side of the road and park by the side.

[0122] Specifically, see Figure 3 , is a schematic diagram of a high-risk state response process in a vehicle tire monitoring method in an embodiment of the present application;

[0123] Step S301, high-risk state; for example, the risk factor (probability) of tire blowout is high.

[0124] In step S302, the terminal display module automatically pops up an emergency measure icon; for example, on the vehicle display screen (such as the instrument panel, central control screen, etc.), a first emergency measure icon related to the current high-risk state pops up to remind the driver to pay attention.

[0125] Step S303, turn on the hazard lights to remind the owner to hold the steering wheel tightly; for example, the vehicle's hazard lights are automatically turned on to alert surrounding vehicles and pedestrians; at the same time, the driver is required to hold the steering wheel tightly to keep the vehicle stable through sound or visual prompts (such as screen information).

[0126] Step S304, voice prompting of the current tire abnormality, and determining whether to decelerate and stop the vehicle; for example, voice prompting of the current tire abnormality to the driver, and asking whether to decelerate and stop the vehicle.

[0127] Step S305, the vehicle owner confirms that there is no need to slow down and stop; for example, after evaluating factors such as road conditions and surrounding vehicle conditions, the driver determines that the current situation allows continued driving, and chooses not to slow down and stop.

[0128] Step S306, stop the voice broadcast, and the icon continues to display the abnormality; for example, after the driver confirms, the voice prompt stops, but the emergency measure icon continues to be displayed on the terminal so that the driver can continue to pay attention to the abnormal situation.

[0129] Step S307, the vehicle owner confirms that he needs to slow down and stop;

[0130] Step S308: Keep going straight and switch the vehicle to a low gear; for example, after deciding to slow down and stop, the driver should keep the vehicle going straight, and the vehicle system or the driver manually switches the vehicle to a low gear to decelerate more smoothly.

[0131] Step S309: the driver is prompted by voice to pull over, or the driver can choose to enter the automatic parking mode. For example, the driver is prompted by voice to pull over, or the driver can choose to enter the automatic parking mode, allowing the vehicle to automatically find a suitable parking space and park. In this way, safety can be ensured and the driver's operating burden in emergency situations can be reduced.

[0132] Through the above methods, timely and effective emergency measures can be taken to help drivers make correct judgments and handle situations quickly when the vehicle is in a high-risk state to ensure driving safety.

[0133] Optionally, the second emergency control strategy includes:

[0134] The second emergency measure icon is displayed on the vehicle instrument; the double flash lights are turned on, and the driver is prompted to hold the steering wheel tightly with both hands in the form of voice broadcast, and the emergency brake and accelerator of the vehicle are controlled to be invalid, and the deceleration is maintained to go straight, so that the vehicle can be driven intelligently to the side of the road and parked; after the vehicle stops, the emergency number is dialed through the vehicle to call for rescue services, and the tire blowout information is sent to the owner of the vehicle.

[0135] In some embodiments, see Figure 4 , is a schematic diagram of a tire blowout state response process in a vehicle tire monitoring method in an embodiment of the present application, and is described in detail as follows:

[0136] Step S401, tire blowout state;

[0137] Step S402: the terminal display module automatically pops up an emergency measure icon; that is, displays the second emergency measure icon.

[0138] Step S403, turning on the double flash warning lights and giving a voice prompt to the owner to hold the steering wheel tightly;

[0139] Step S404, emergency braking is invalid, throttle is invalid, keep going straight, and switch the vehicle to low gear; for example, emergency braking and throttle operations are both invalid at this time to prevent the vehicle from overturning due to misoperation; keep the vehicle going straight, avoid uncontrolled steering, switch the vehicle to low gear, and use the engine braking force to assist in deceleration.

[0140] Step S405, the vehicle owner is prompted by voice to pull over, or the vehicle owner chooses to enter automatic parking mode;

[0141] Step S406: After the vehicle stops, a rescue call is automatically made and the vehicle owner is informed.

[0142] In the above manner, in the event of a tire blowout, the vehicle can be safely stopped and rescue services can be obtained in a timely manner through automated and intelligent emergency response measures, thereby reducing the driver's operating difficulty and risk in emergency situations and improving driving safety.

[0143] See also Figure 7 , is a schematic diagram of the structure of a vehicle tire monitoring system in an embodiment of the present application, including:

[0144] The information acquisition module 701 is used to acquire tire information of the vehicle, wherein the tire information includes tire temperature value, tire pressure value, wear value and slip rate;

[0145] The indicator monitoring module 702 is used to calculate the standardized value of the indicator under the current situation if it is monitored that the tire includes at least one of the following situations: if the tire pressure is determined to be abnormal or / and the tire pressure difference is abnormal according to the tire pressure value, if the tire temperature is determined to be abnormal or / and the tire temperature difference is abnormal according to the tire temperature value, if the wear is determined to be abnormal according to the wear value, if the slip rate is determined to be abnormal according to the slip rate, if it is determined that the numerical change between the tire pressure and the tire temperature is not positively correlated, if it is determined that the numerical change between the tire pressure difference and the tire temperature difference is not positively correlated, if it is determined that the numerical change between the slip rate and the wear value is not positively correlated;

[0146] A comprehensive index determination module 703 is used to perform weighted calculation according to the weight coefficient corresponding to the indicator and the standardized value to determine the comprehensive index;

[0147] The state determination and response module 704 is used to judge the comprehensive index, determine the state of the tire, and execute an emergency control strategy to respond.

[0148] Optionally, the information acquisition module 701 in the present application also includes ambient temperature; if the ambient temperature is greater than a first preset temperature, a first monitoring strategy is executed for monitoring; if the ambient temperature is less than a second preset temperature, a second monitoring strategy is executed for monitoring; if the ambient temperature is greater than the second preset temperature and less than the first preset temperature, a third monitoring strategy is executed for monitoring, wherein the first preset temperature is greater than the second preset temperature, the first monitoring strategy is a summer monitoring standard, the second monitoring strategy is a winter monitoring standard, and the third monitoring strategy is a normal monitoring standard.

[0149] Optionally, the status determination and response module 704 of the present application also includes: if the comprehensive index is in a first preset interval, the tire is determined to be in a normal state; if the comprehensive index is in a second preset interval, the tire is determined to be in a low-risk state; if the comprehensive index is in a third preset interval, the tire is determined to be in a high-risk state, and a first emergency control strategy is executed to respond; if the comprehensive index is in a fourth preset interval, the tire is determined to be in a blowout state, and a second emergency control strategy is executed to respond; wherein the score ranges represented by the first preset interval, the second preset interval, the third preset interval, and the fourth preset interval increase in sequence.

[0150] Optionally, the first emergency control strategy of the present application includes: displaying a first emergency measure icon on the vehicle instrument; turning on the hazard lights, prompting the driver to hold the steering wheel tightly with both hands and that the tire is currently in a high-risk state by voice broadcast, and sending a query request to the driver whether to stop the car; if no parking confirmation information is received within a preset time period, controlling the vehicle to stop voice broadcast and continuously displaying the first emergency measure icon; or, displaying the first emergency measure icon on the vehicle instrument; turning on the hazard lights, prompting the driver to hold the steering wheel tightly with both hands and that the tire is currently in a high-risk state by voice broadcast, and sending a query request to the driver whether to stop the car; if parking confirmation information is received within a preset time period, controlling the vehicle to keep going straight and reduce the speed so that the vehicle can intelligently drive to the side of the road and park by the side.

[0151] Optionally, the second emergency control strategy of the present application includes: displaying a second emergency measure icon on the vehicle instrument; turning on the hazard lights, prompting the driver to hold the steering wheel tightly with both hands in a voice broadcast manner, and controlling the vehicle's emergency brakes and accelerator to be invalid and to keep slowing down and going straight, so that the vehicle can drive intelligently to the side of the road and park; after the vehicle stops, calling an emergency number through the vehicle to call for rescue services, and sending tire blowout information to the owner of the vehicle.

[0152] Optionally, the indicator monitoring module 702 in the present application also includes: monitoring the indicators in each situation, comparing the indicators in any situation with the abnormal interval corresponding to the preset indicators, standardizing each indicator according to the comparison result, and calculating the standardized value of each indicator; or, monitoring the indicators in each situation, comparing the indicators in any situation with the abnormal interval corresponding to the preset indicators, if the current indicator is outside the abnormal interval corresponding to the preset indicator, then determining that the current indicator is normal, and generating a first score value representing the standardized value; if the current indicator is within the abnormal interval corresponding to the preset indicator, then determining that the current indicator is abnormal, and generating a second score value representing the standardized value of the current indicator, the second score value is much larger than the first score value, and the greater the degree of abnormality presented by the second score value in the abnormal interval, the greater the value assigned.

[0153] Optionally, the information acquisition module 701 in the present application also includes: obtaining a tire pressure signal using a tire pressure sensor, performing Kalman filtering on the tire pressure signal, and determining a tire pressure value; obtaining a tire temperature signal using a tire temperature sensor, performing Kalman filtering on the tire temperature signal, and determining a tire temperature value; obtaining an acceleration signal using an acceleration sensor, performing Kalman filtering on the acceleration signal, integrating the filtered acceleration signal to obtain a wheel speed, calculating a difference between the vehicle speed and the wheel speed, and determining the slip rate based on a ratio of the difference to the vehicle speed; performing feature extraction on the filtered acceleration signal to obtain wear characteristics, the wear characteristics including acceleration peaks, vibration patterns and periods; and inputting the wear characteristics into a preset tire wear prediction model to determine the wear value.

[0154] The vehicle tire monitoring system provided by the embodiment of the present disclosure obtains the tire information of the vehicle. Since the tire information includes tire temperature value, tire pressure value, wear value and slip rate, the performance, safety and service life of the tire can be fully monitored by collecting multi-dimensional data of the tire, which is conducive to timely discovery of potential problems; if the tire is monitored to include at least one of the following situations, the standardized value of the indicator under the current situation is calculated; wherein, if the tire pressure is abnormal or / and the tire pressure difference is abnormal according to the tire pressure value, if the tire temperature is abnormal or / and the tire temperature difference is abnormal according to the tire temperature value, if the tire temperature is abnormal or / and the tire temperature difference is abnormal according to the tire temperature value, Wear value determines wear abnormality, if slip rate abnormality is determined according to the slip rate, if it is determined that the numerical change between the tire pressure and the tire temperature is not positively correlated, if it is determined that the numerical change between the tire pressure difference and the tire temperature difference is not positively correlated, if it is determined that the numerical change between the slip rate and the wear value is not positively correlated; in this way, not only various abnormal conditions of the tire are identified, but also the tire abnormality detection range is improved, and a weighted calculation is performed according to the weight coefficient corresponding to the indicator and the standardized value to determine the comprehensive index; the comprehensive index is judged to determine the state of the tire, so as to execute the emergency control strategy for response. Through the above method, the abnormal degree of a single parameter is taken into account, and by integrating the mutual influence between multiple parameters, the tire state can be reflected more comprehensively and accurately; at the same time, by responding to the emergency control strategy in a timely manner, the risk of traffic accidents caused by tire failure is avoided, which not only improves driving comfort but also ensures driving safety.

[0155] An embodiment of the present disclosure further provides an electronic device, including: a processor and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the electronic device executes the above method.

[0156] Figure 8 The structure diagram of the computer system suitable for implementing the electronic device of the embodiment of the present application is shown. It should be noted that: Figure 8 The computer system 800 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0157] like Figure 8 As shown, the computer system 800 includes a central processing unit (CPU) 801, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 802 or the program loaded from the storage part 808 to the random access memory (RAM) 803, such as executing the method in the above embodiment. In the RAM 803, various programs and data required for system operation are also stored. The CPU 801, ROM 802 and RAM 803 are connected to each other through a bus 804. The input / output (I / O) interface 805 is also connected to the bus 804.

[0158] The following components are connected to the I / O interface 805: an input section 806 including a keyboard, a mouse, etc.; an output section 807 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 808 including a hard disk, etc.; and a communication section 809 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the I / O interface 805 as needed. A removable medium 811, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 810 as needed so that a computer program read therefrom is installed into the storage section 808 as needed.

[0159] The electronic device disclosed in this embodiment includes a processor, a memory, a transceiver and a communication interface. The memory and the communication interface are connected to the processor and the transceiver and complete communication with each other. The memory is used to store computer programs, the communication interface is used to communicate, and the processor and the transceiver are used to run the computer program so that the electronic device executes each step of the above method.

[0160] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent possible changes only. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. Parts and subsamples of some embodiments may be included in or replace parts and subsamples of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of a stated sub-sample, whole, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other sub-samples, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0161] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. Technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. Technicians can clearly understand that for the convenience and simplicity of description, the specific working process of the systems, devices and units described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0162] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units can be only a logical function division, and there can be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some sub-samples can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0163] The flowchart and block diagram in the accompanying drawings show the possible architecture, functions and operations of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and a part of the module, program segment or code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A vehicle tire monitoring method, characterized in that: include: Acquire tire information of the vehicle, wherein the tire information includes tire temperature value, tire pressure value, wear value and slip rate; If it is monitored that the tire includes at least one of the following situations, a standardized value of the indicator under the current situation is calculated; wherein, if it is determined that the tire pressure is abnormal or / and the tire pressure difference is abnormal according to the tire pressure value, if it is determined that the tire temperature is abnormal or / and the tire temperature difference is abnormal according to the tire temperature value, if it is determined that the wear is abnormal according to the wear value, if it is determined that the slip rate is abnormal according to the slip rate, if it is determined that the numerical change between the tire pressure and the tire temperature is not positively correlated, if it is determined that the numerical change between the tire pressure difference and the tire temperature difference is not positively correlated, if it is determined that the numerical change between the slip rate and the wear value is not positively correlated; Perform weighted calculation based on the weight coefficient corresponding to the indicator and the standardized value to determine the comprehensive index; The comprehensive index is judged to determine the state of the tire and to execute an emergency control strategy for response.

2. The method according to claim 1, characterized in that The tire information also includes the ambient temperature; if the tire is monitored to include at least one of the following conditions, the method further includes: If the ambient temperature is greater than the first preset temperature, the first monitoring strategy is executed for monitoring; if the ambient temperature is less than the second preset temperature, the second monitoring strategy is executed for monitoring; if the ambient temperature is greater than the second preset temperature and less than the first preset temperature, the third monitoring strategy is executed for monitoring, wherein the first preset temperature is greater than the second preset temperature, the first monitoring strategy is the summer monitoring standard, the second monitoring strategy is the winter monitoring standard, and the third monitoring strategy is the normal monitoring standard.

3. The method according to claim 1, characterized in that The comprehensive index is judged to determine the state of the tire, and an emergency control strategy is executed to respond, including: If the comprehensive index is within a first preset range, determining that the tire is in a normal state; If the comprehensive index is in a second preset interval, determining that the tire is in a low-risk state; If the comprehensive index is in a third preset interval, determining that the tire is in a high-risk state, and executing a first emergency control strategy to respond; If the comprehensive index is in a fourth preset interval, determining that the tire is in a blowout state, and executing a second emergency control strategy to respond; The score ranges represented by the first preset interval, the second preset interval, the third preset interval and the fourth preset interval increase in sequence.

4. The method according to claim 3, characterized in that: The first emergency control strategy includes: Displaying the first emergency measure icon on the vehicle instrument; turning on the hazard lights, reminding the driver to hold the steering wheel tightly with both hands and that the tire is currently in a high-risk state, and sending a query to the driver whether to stop the car; if no parking confirmation information is received within a preset time period, controlling the vehicle to stop the voice broadcast and continuously displaying the first emergency measure icon; or, The first emergency measure icon is displayed on the vehicle instrument; the hazard lights are turned on, and the driver is reminded by voice to hold the steering wheel tightly with both hands and that the tire is currently in a high-risk state, and a query request is sent to the driver whether to stop the car; if a parking confirmation message is received within a preset time period, the vehicle is controlled to keep going straight and reduce the speed so that the vehicle can intelligently drive to the side of the road and park by the side.

5. The method according to claim 3, characterized in that: The second emergency control strategy includes: The second emergency measure icon is displayed on the vehicle instrument; the double flash lights are turned on, and the driver is prompted to hold the steering wheel tightly with both hands in the form of voice broadcast, and the emergency brake and accelerator of the vehicle are controlled to be invalid, and the deceleration is maintained to go straight, so that the vehicle can be driven intelligently to the side of the road and parked; after the vehicle stops, the emergency number is dialed through the vehicle to call for rescue services, and the tire blowout information is sent to the owner of the vehicle.

6. The method according to any one of claims 1 to 5, characterized in that: If the tire is monitored to have at least one of the following conditions, a standardized value of the indicator under the current condition is calculated, including: Monitor the indicators in each situation, compare the indicators in any situation with the abnormal intervals corresponding to the preset indicators, standardize each indicator according to the comparison results, and calculate the standardized value of each indicator.

7. The method according to any one of claims 1 to 5, characterized in that: If the tire is monitored to have at least one of the following conditions, a standardized value of the indicator under the current condition is calculated, including: Monitor the indicators in each situation, and compare the indicators in any situation with the abnormal interval corresponding to the preset indicators. If the current indicator is outside the abnormal interval corresponding to the preset indicator, it is determined that the current indicator is normal, and a first score value representing the standardized value is generated. If the current indicator is within the abnormal interval corresponding to the preset indicator, it is determined that the current indicator is abnormal, and a second score value representing the standardized value of the current indicator is generated. The second score value is much larger than the first score value, and the greater the degree of abnormality of the second score value in the abnormal interval, the greater the value assigned.

8. The method according to any one of claims 1 to 5, characterized in that: Get the vehicle's tire information, including: Obtaining a tire pressure signal using a tire pressure sensor, performing Kalman filtering on the tire pressure signal, and determining a tire pressure value; Acquire a tire temperature signal using a tire temperature sensor, perform Kalman filtering on the tire temperature signal, and determine a tire temperature value; Acquiring an acceleration signal using an acceleration sensor, performing Kalman filtering on the acceleration signal, integrating the filtered acceleration signal to obtain a wheel speed, calculating a difference between a vehicle speed and the wheel speed, and determining the slip rate based on a ratio of the difference to the vehicle speed; The filtered acceleration signal is subjected to feature extraction to obtain wear features, wherein the wear features include acceleration peak value, vibration mode and cycle; the wear features are input into a preset tire wear prediction model to determine the wear value.

9. A vehicle tire monitoring system, characterized in that: include: An information acquisition module, used to acquire tire information of the vehicle, wherein the tire information includes tire temperature value, tire pressure value, wear value and slip rate; an indicator monitoring module, configured to calculate a standardized value of an indicator under the current situation if it is monitored that the tire includes at least one of the following situations; wherein, if it is determined that the tire pressure is abnormal or / and the tire pressure difference is abnormal according to the tire pressure value, if it is determined that the tire temperature is abnormal or / and the tire temperature difference is abnormal according to the tire temperature value, if it is determined that the wear is abnormal according to the wear value, if it is determined that the slip rate is abnormal according to the slip rate, if it is determined that the numerical change between the tire pressure and the tire temperature is not positively correlated, if it is determined that the numerical change between the tire pressure difference and the tire temperature difference is not positively correlated, if it is determined that the numerical change between the slip rate and the wear value is not positively correlated; A comprehensive index determination module, used to perform weighted calculation according to the weight coefficient corresponding to the indicator and the standardized value to determine the comprehensive index; The state determination and response module is used to judge the comprehensive index, determine the state of the tire, and respond by executing an emergency control strategy.

10. An electronic device, characterized in that: include: Processor and memory; The memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the electronic device executes the method according to any one of claims 1 to 8.

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