State safety assessment method and system for vehicle driving state

Abstract

The invention discloses a vehicle driving state safety assessment method and system, and relates to the technical field of vehicle driving safety assessment. According to the vehicle driving state safety assessment method, tire state data, engine state data and steering state data at each time point when a vehicle is in a driving state are obtained in real time and comprehensively analyzed respectively, and a driving safety state assessment index at each time point when the vehicle is in the driving state is obtained; according to the method, multiple key state data such as the tire state, the engine state and the steering state are obtained and analyzed in real time, the actual driving state of the vehicle can be comprehensively reflected, compared with a traditional evaluation mode only depending on a single parameter, the method can more accurately evaluate the safety and stability of the vehicle under various driving conditions, and the safety and reliability of the vehicle are improved. The state data of each time point is comprehensively analyzed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle driving safety assessment, and in particular to a vehicle driving state safety assessment method and system. Background Art

[0002] With the rapid development of the automotive industry and the continuous advancement of intelligent technology, vehicle driving safety has become a research field that has attracted much attention. Modern cars are equipped with a large number of electronic control units (ECUs) and sensors to monitor and manage various vehicle operating parameters in real time, such as engine speed, tire pressure, tire temperature, steering wheel angle, etc. These data can be used to evaluate the driving status of the vehicle, thereby providing drivers with a safer driving experience. However, existing vehicle driving safety assessment methods have some limitations.

[0003] Based on the above solution, it is found that the limitations of the existing technology include at least the following problems: traditional vehicle driving status safety assessment methods are usually limited to monitoring certain single parameters, such as only monitoring tire pressure or engine speed, etc., and lack a comprehensive analysis of the overall status of the vehicle, which makes it difficult to detect comprehensive abnormal conditions between multiple parameters in real time. For example, changes in tire status and engine status occur simultaneously and affect driving safety. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a vehicle driving state safety assessment method and system, which solves the problem that traditional vehicle driving state safety assessment methods are usually limited to monitoring certain single parameters, such as only monitoring tire pressure or engine speed, etc., and lack of comprehensive analysis of the overall state of the vehicle, which makes it difficult to detect comprehensive abnormal conditions between multiple parameters in real time, for example, changes in tire status and engine status occur simultaneously and affect driving safety.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a vehicle driving state safety assessment method, comprising the following steps: real-time acquisition of tire state data, engine state data, and steering state data at each time point when the vehicle is in driving state; data analysis of the tire state data, engine state data, and steering state data at each time point when the vehicle is in driving state, to obtain a tire state assessment index, an engine state assessment index, and a steering state assessment index at each time point when the vehicle is in driving state; comprehensive analysis of the tire state assessment index, engine state assessment index, and steering state assessment index at each time point when the vehicle is in driving state, to obtain a driving safety state assessment index at each time point when the vehicle is in driving state; safety judgment analysis of the driving safety state assessment index at each time point when the vehicle is in driving state and a preset assessment range are performed, and corresponding measures are taken according to the judgment and analysis results.

[0006] Furthermore, the tire status data specifically includes the driving speed value, tire pressure value, and tire temperature value of each tire of the vehicle; the engine status data specifically includes the engine speed value, engine internal temperature value, oil pressure value, and fuel pressure value; and the steering status data specifically includes the steering wheel rotation angle value and the tire steering angle value of each tire.

[0007] Furthermore, the specific formula for calculating the driving safety status evaluation index at each time point when the vehicle is in driving state is as follows: ;in, The vehicle is in driving state. Driving safety status evaluation index at a time point, The vehicle is in driving state. Tire condition assessment index at a time point, is the tire condition coefficient stored in the database, The vehicle is in driving state. The engine status evaluation index at a time point, is the engine status coefficient stored in the database, The vehicle is in driving state. The steering state assessment index at each time point, is the steering state coefficient stored in the database, , is a natural constant, , is the number of time points obtained.

[0008] Furthermore, the specific steps for obtaining the tire condition evaluation index at each time point when the vehicle is in a driving state are as follows: respectively obtain the maximum reference value of the driving speed, the minimum reference value of the driving speed, the maximum reference value of the tire pressure, the minimum reference value of the tire pressure, the maximum reference value of the tire temperature, and the minimum reference value of the tire temperature of each tire of the vehicle; and conduct a comprehensive analysis of the driving speed value, the maximum reference value of the driving speed, the minimum reference value of the driving speed, the tire pressure value, the maximum reference value of the tire pressure, the minimum reference value of the tire pressure, the tire temperature value, the maximum reference value of the tire temperature, and the minimum reference value of the tire temperature of each tire at each time point when the vehicle is in a driving state to obtain the tire condition evaluation index at each time point when the vehicle is in a driving state.

[0009] Furthermore, the specific formula for calculating the tire condition evaluation index at each time point when the vehicle is in driving condition is as follows: ;in, The vehicle is in driving state. Tire condition assessment index at a time point, The vehicle is in driving state. The time point The maximum reference value of the driving speed of each tire, The vehicle is in driving state. The time point The minimum reference value of the driving speed of each tire, The vehicle is in driving state. The time point The speed of each tire, The vehicle is in driving state. The driving coefficient of each tire, The vehicle is in driving state. The time point The maximum reference value of the tire pressure in each tire. The vehicle is in driving state. The time point The minimum reference value of the tire pressure of each tire, The vehicle is in driving state. The time point The tire pressure value of each tire, The vehicle is in driving state. The internal pressure coefficient of each tire, The vehicle is in driving state. The time point The maximum reference value of the tire's internal temperature, The vehicle is in driving state. The time point The minimum reference value of the tire internal temperature of each tire, The vehicle is in driving state. The time point The internal temperature of each tire, The vehicle is in driving state. The internal temperature coefficient of each tire, , , is the number of time points obtained, , is the number of tires on the vehicle.

[0010] Furthermore, the specific steps for obtaining the engine state evaluation index at each time point when the vehicle is in a driving state are as follows: obtaining the vehicle's engine speed reference value, engine internal temperature reference value, oil pressure reference value, and fuel pressure reference value; performing a comprehensive analysis on the engine speed value, engine internal temperature value, oil pressure value, and fuel pressure value at each time point when the vehicle is in a driving state, respectively in combination with the engine speed reference value, engine internal temperature reference value, oil pressure reference value, and fuel pressure reference value, to obtain the engine state evaluation index at each time point when the vehicle is in a driving state.

[0011] Furthermore, the specific formula for calculating the engine state evaluation index at each time point when the vehicle is in driving state is as follows: ;in, The vehicle is in driving state. The engine status evaluation index at a time point, The vehicle is in driving state. The engine speed reference value at a time point, is the engine speed reference value, is the engine speed weight coefficient, The vehicle is in driving state. The internal temperature of the engine at a certain time point, is the reference value of the engine internal temperature, is the engine internal temperature weight coefficient, The vehicle is in driving state. The oil pressure value at a time point, is the oil pressure reference value, is the oil pressure weight coefficient, The vehicle is in driving state. The fuel pressure value at a time point, is the fuel pressure reference value, is the fuel pressure weight coefficient, , , is the number of time points obtained.

[0012] Furthermore, the specific steps for obtaining the steering state evaluation index at each time point when the vehicle is in driving state are as follows: respectively obtain the maximum reference value of the steering wheel rotation angle of the vehicle and the maximum reference value of the tire steering angle of each tire; comprehensively analyze the steering wheel rotation angle value and the tire steering angle value of each tire at each time point when the vehicle is in driving state, respectively in combination with the maximum reference value of the steering wheel rotation angle and the maximum reference value of the tire steering angle of each tire, to obtain the steering state evaluation index at each time point when the vehicle is in driving state, and the specific formula is as follows: ;in, The vehicle is in driving state. The steering state assessment index at each time point, The vehicle is in driving state. The steering wheel rotation angle value at a time point, is the maximum reference value of the vehicle's steering wheel rotation angle, is the comprehensive weighted coefficient of the steering wheel rotation angle, The vehicle is in driving state. The time point The tire steering angle value of each tire, For the vehicle The maximum reference value of the tire steering angle of each tire, For the vehicle The weighting factor of the steering angle of each tire, is the comprehensive weighted coefficient of tire steering angle, , , is the number of time points obtained, , is the number of tires on the vehicle.

[0013] Furthermore, the driving safety status evaluation index of each time point when the vehicle is in driving state is respectively compared with the preset evaluation range for safety judgment analysis, and the specific steps of taking corresponding measures according to the judgment and analysis results are as follows: respectively judge whether the driving safety status evaluation index of each time point when the vehicle is in driving state is within the preset evaluation range; if the driving safety status evaluation index of the vehicle is in driving state is outside the preset evaluation range, a safety abnormality alarm is sent to the driver.

[0014] A vehicle driving state safety assessment system comprises: a data acquisition module, a state assessment module, a safety analysis module, and a judgment analysis module; the data acquisition module is used to acquire tire state data, engine state data, and steering state data at each time point when the vehicle is in driving state in real time; the state assessment module is used to perform data analysis on the tire state data, engine state data, and steering state data at each time point when the vehicle is in driving state, respectively, to obtain a tire state assessment index, an engine state assessment index, and a steering state assessment index at each time point when the vehicle is in driving state; the safety analysis module is used to perform comprehensive analysis on the tire state assessment index, engine state assessment index, and steering state assessment index at each time point when the vehicle is in driving state, respectively, to obtain a driving safety state assessment index at each time point when the vehicle is in driving state; the judgment analysis module is used to perform safety judgment analysis on the driving safety state assessment index at each time point when the vehicle is in driving state and a preset assessment range, and take corresponding measures according to the judgment analysis results.

[0015] The present invention has the following beneficial effects: (1) The vehicle driving state safety assessment method can comprehensively reflect the actual driving state of the vehicle by acquiring and analyzing multiple key state data in real time, such as tire state, engine state and steering state. Compared with the traditional assessment method that only relies on a single parameter, this method can more accurately assess the safety and stability of the vehicle under various driving conditions. By comprehensively analyzing the state data at each time point, the method can identify potential safety hazards and promptly remind the driver to take corresponding measures, effectively preventing accidents and improving the overall safety of the vehicle.

[0016] (2) The vehicle driving state safety assessment method dynamically adjusts the safety assessment criteria and thresholds according to the vehicle's performance in different environments and driving conditions. For example, in slippery roads or emergency steering situations, the system will automatically enhance the monitoring of relevant state parameters (such as tire state and steering state) and adjust the corresponding weight coefficients. This flexible assessment mechanism enables the vehicle to maintain optimal safety performance under various driving conditions, helps to reduce false alarms and missed alarms, and improves the accuracy and response speed of the system.

[0017] (3) The vehicle driving state safety assessment method provides a holistic safety state assessment method by comprehensively analyzing multiple state assessment indexes. The method can not only detect a single state abnormality, but also identify the mutual influence and comprehensive effects between multiple parameters to form a more comprehensive safety state assessment. This comprehensive assessment capability enables the system to provide more accurate warning information and decision support in complex driving environments, helping drivers to respond to potential dangerous situations in a timely manner and ensure the safety of the vehicle and passengers.

[0018] (4) The vehicle driving state safety assessment system realizes a fully automated vehicle safety state monitoring and assessment process by integrating multiple functional modules, including a data acquisition module, a state assessment module, a safety analysis module, and a judgment analysis module. The data acquisition module can collect and transmit various state data in real time, such as tires, engines, steering, etc., to ensure the accuracy and timeliness of the information. On this basis, the state assessment module and the safety analysis module conduct comprehensive data analysis and comprehensive assessment without manual intervention, and can quickly calculate the vehicle's safety state assessment index. The judgment analysis module can automatically identify potential risks and take corresponding early warning or safety measures based on the preset safety assessment standards. Through this highly integrated design, the system realizes the automation of the entire process from data acquisition to safety assessment to emergency response, significantly improving the efficiency and reliability of vehicle driving safety management, reducing dependence on drivers and operational complexity, and improving the overall user experience.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a flow chart of a vehicle driving state safety assessment method.

[0021] Figure 2 The present invention is a flowchart of the specific steps of obtaining the tire condition evaluation index at each time point when the vehicle is in a vehicle driving state safety evaluation method.

[0022] Figure 3 The present invention is a block diagram of a vehicle driving state safety assessment system. DETAILED DESCRIPTION

[0023] The embodiment of the present application solves the problem that traditional vehicle driving state safety assessment methods are usually limited to monitoring certain single parameters, such as only monitoring tire pressure or engine speed, etc., and lack a comprehensive analysis of the overall state of the vehicle, which makes it difficult to detect comprehensive abnormal conditions between multiple parameters in real time, for example, changes in tire status and engine status occur simultaneously and affect driving safety.

[0024] The overall idea of ​​the problem in the embodiment of this application is as follows: During the driving process of the vehicle, the tire status data, engine status data and steering status data at each time point are collected in real time. These data include the driving speed, tire pressure, tire temperature of each tire of the vehicle, the engine speed, internal temperature, oil pressure, fuel pressure, as well as the steering wheel rotation angle and the steering angle value of each tire. Then, the tire status data, engine status data and steering status data obtained at each time point are analyzed to calculate the tire status evaluation index, engine status evaluation index and steering status evaluation index respectively. Then, these evaluation indexes are combined to calculate the vehicle driving safety status evaluation index at each time point to evaluate the overall safety status of the vehicle at different time points. Finally, the calculated driving safety status evaluation index at each time point is compared with the preset safety evaluation range. If any evaluation index is found to exceed the preset safety range, the system will immediately issue a safety abnormality alarm to the driver so that the driver can take necessary safety measures in time.

[0025] See also Figure 1 The embodiment of the present invention provides a technical solution: a vehicle driving state safety assessment method, comprising the following steps: real-time acquisition of tire state data, engine state data, and steering state data at each time point when the vehicle is in driving state; data analysis of the tire state data, engine state data, and steering state data at each time point when the vehicle is in driving state, to obtain a tire state assessment index, an engine state assessment index, and a steering state assessment index at each time point when the vehicle is in driving state; comprehensive analysis of the tire state assessment index, the engine state assessment index, and the steering state assessment index at each time point when the vehicle is in driving state, to obtain a driving safety state assessment index at each time point when the vehicle is in driving state; safety judgment analysis of the driving safety state assessment index at each time point when the vehicle is in driving state and a preset assessment range are performed, and corresponding measures are taken according to the judgment analysis results.

[0026] The tire status data specifically includes the driving speed value, tire pressure value, and tire temperature value of each tire of the vehicle; the engine status data specifically includes the engine speed value, engine internal temperature value (engine coolant temperature), oil pressure value (reflects the internal lubrication status of the engine, low oil pressure may cause engine wear or damage), fuel pressure value (pressure in the fuel system, affecting fuel injection and engine running smoothness); the steering status data specifically includes the steering wheel rotation angle value (the maximum angle value that the current steering wheel can rotate to) and the tire steering angle value of each tire (the maximum angle value that the current tire can turn to).

[0027] Among them, the driving speed value is obtained through wheel speed sensors. These sensors are usually installed on the hub of each wheel and use magnetic or optical detection technology to measure the rotation speed of the wheel.

[0028] The tire pressure value is obtained through the tire pressure monitoring system (TPMS). There are two main types of TPMS: direct and indirect. Direct TPMS uses a pressure sensor installed in each tire to directly measure the tire pressure and send the data to the on-board computer. Indirect TPMS indirectly infers the tire pressure by comparing the rotation speed of each tire, but the direct type is more accurate and commonly used. Many direct TPMS are also equipped with a temperature sensor, which can obtain the temperature value of the tire at the same time.

[0029] The engine speed value is obtained through the crankshaft position sensor (Crankshaft Position Sensor) or the engine speed sensor (Engine RPM Sensor). These sensors are usually installed near the engine crankshaft and use magnetic induction or photoelectric principles to measure the engine's rotation speed (RPM).

[0030] The internal temperature of the engine is obtained through the coolant temperature sensor. The sensor is usually located in the engine coolant circuit and detects the temperature of the coolant to infer the internal temperature of the engine.

[0031] The oil pressure value is obtained through the oil pressure sensor. The oil pressure sensor is usually installed in the engine's oil line or near the oil pump to monitor the oil pressure to ensure the normal operation of the engine's lubrication system.

[0032] The fuel pressure value is obtained through the fuel pressure sensor. This sensor is installed in the fuel line to monitor the pressure of the fuel system to ensure stable fuel supply and efficient engine combustion.

[0033] The steering wheel rotation angle value is obtained through the steering angle sensor. The sensor is installed on the steering wheel shaft or near the steering column and uses optical encoding or magnetic detection to measure the steering wheel rotation angle.

[0034] The wheel position sensors or steering angle sensors in the steering system are used to obtain the steering angle value of each tire. In vehicles equipped with a four-wheel steering system, the sensor is installed on the steering mechanism to accurately measure the steering angle of each tire to ensure coordinated steering of the front and rear wheels.

[0035] And, for front-wheel steering systems (most vehicles): In most cases, the vehicle is front-wheel steering, which means that the measurement of the steering angle should be focused on the front wheels. Regardless of whether the front wheels are driving wheels or not, the steering angle of the front wheels directly determines the steering path of the vehicle. For traditional front-wheel steering vehicles, there is no need to measure the steering angle of the rear wheels (non-driving wheels or driving wheels) because they do not participate in steering. Therefore, the tire steering angle value of each tire is specifically the tire steering angle value of each front wheel tire of the vehicle.

[0036] For four-wheel steering systems (advanced vehicles): In a four-wheel steering system, the steering angles of the front and rear wheels need to be measured. This system allows the rear wheels to turn in the opposite direction of the front wheels at low speeds (to reduce the turning radius) or in the same direction as the front wheels at high speeds (to improve stability). Therefore, the steering angle data of the front and rear wheels is crucial for this system.

[0037] All-Wheel Drive and Four-Wheel Drive: Even in all-wheel drive or four-wheel drive vehicles, the steering angle is still measured at the wheel that is actually steering (usually the front wheels, unless it is a four-wheel steering system, in which case the steering angle value for each tire is the same as the steering angle value for each front tire of the vehicle, or in a four-wheel steering system, the steering angle value for each tire is the same as the steering angle value for each tire of the vehicle).

[0038] Specifically, the specific formula for calculating the driving safety status evaluation index at each time point when the vehicle is in driving state is as follows: ;in, The vehicle is in driving state. Driving safety status evaluation index at a time point, The vehicle is in driving state. Tire condition assessment index at a time point, is the tire condition coefficient stored in the database, The vehicle is in driving state. The engine status evaluation index at a time point, is the engine status coefficient stored in the database, The vehicle is in driving state. The steering state assessment index at each time point, is the steering state coefficient stored in the database, , is a natural constant, , is the number of time points obtained.

[0039] It should be explained that the , , The specific analysis process is as follows: It is a weight coefficient related to the tire condition evaluation index, representing the weight of the tire condition (such as tire pressure, tire temperature, etc.) on the vehicle driving condition evaluation. If the tire condition has a great impact on the vehicle's driving safety, such as driving on slippery or rugged roads, The value of should be larger, indicating that the tire condition is more important. When driving on a flat and dry road, the tire condition has a relatively small impact on the driving condition. The value can be decreased.

[0040] It is a weight coefficient related to the engine status evaluation index, which represents the influence weight of the engine status (such as speed, torque, fuel efficiency, etc.) on the vehicle driving status evaluation. If the vehicle is driving under conditions that require high power output, such as acceleration or climbing, The value of should be larger to reflect the importance of engine status to vehicle power and performance. When driving at a constant speed or on a flat road, the engine status has less impact on the vehicle's driving state. The value can be smaller.

[0041] It is a weight coefficient related to the steering state evaluation index, representing the influence weight of the steering state (such as steering wheel angle, steering angular velocity, etc.) on the vehicle driving state evaluation. When turning or performing complex maneuvers (such as avoiding obstacles or emergency steering), The value of should be larger to reflect the key role of steering state in vehicle handling and stability. When driving in a straight line or on a highway, the importance of steering state decreases. The value can be smaller.

[0042] For example, the existing tire condition factor 0.5, engine status coefficient 0.3, steering state coefficient The value is 0.2, which means the vehicle is driving on a slippery mountain road. In this case, the tire condition is very important to driving safety, because the tire pressure and temperature will directly affect the vehicle's grip and handling performance. The engine condition is second because better power is needed to cope with uphill driving or emergency acceleration. The steering condition is relatively the least important in this scenario because the steering operation is relatively stable and does not require frequent sharp turns.

[0043] Tire condition factor A value of 0.5 indicates that the tire condition is very important when driving on slippery roads, so we give it a larger weight (50%), indicating that the tire condition is the most important factor under this driving condition.

[0044] Engine condition factor The value is 0.3, which means that the weight of the engine status is 0.3 (30%), indicating that power output is important in this scenario, but not as important as the tire status.

[0045] Steering state coefficient The value is 0.2, which means that the weight of the steering state is 0.2 (20%). In the case of straight driving or slow turning on a slippery mountain road, the influence of the steering state is relatively small, so a lower weight is given.

[0046] In this implementation scheme, by introducing weight coefficients (such as tire condition coefficient, engine condition coefficient, steering condition coefficient), the method can dynamically adjust and flexibly evaluate according to different driving conditions and road conditions. For example, when driving on a slippery mountain road, the tire condition is more critical to the driving safety of the vehicle. Therefore, the system sets the tire condition coefficient to a higher value (0.5) to reflect its importance. This design enables the system to adjust the evaluation focus according to the real-time driving environment and vehicle dynamics, effectively improving the accuracy and practicality of the evaluation, and ensuring that the most reliable safety evaluation can be provided under various driving conditions. By combining multiple evaluation indexes (tire condition, engine condition, steering condition) for comprehensive analysis, the system can comprehensively evaluate the overall safety status of the vehicle. This method avoids the one-sidedness of the evaluation that may be caused by a single parameter. For example, even if the engine condition and steering condition are If the tire condition (such as tire pressure and temperature) is not good, it can also be reflected in the evaluation index. In this way, the system can more accurately reflect the true condition of the vehicle, prevent potential risks, and provide the driver with more comprehensive safety information, thereby improving the safety of vehicle driving. This method allows personalized safety assessments according to different driving scenarios. For example, when driving on slippery roads, this method strengthens the monitoring and assessment of tire conditions by setting a higher tire condition coefficient. In scenarios that require strong power output (such as acceleration or climbing), the system can increase the weight of the engine condition coefficient to ensure that the vehicle still maintains safety performance when power demand is high. Through this scenario-based adjustment, the system can not only provide more accurate safety assessments under different driving conditions, but also be optimized for specific driving needs to improve driving safety and comfort.

[0047] Specifically, Figure 2 As shown, the specific steps for obtaining the tire condition evaluation index at each time point when the vehicle is in a driving state are as follows: respectively obtain the maximum reference value of the driving speed, the minimum reference value of the driving speed, the maximum reference value of the tire pressure, the minimum reference value of the tire pressure, the maximum reference value of the tire temperature, and the minimum reference value of the tire temperature of each tire of the vehicle; and comprehensively analyze the driving speed value, the maximum reference value of the driving speed, the minimum reference value of the driving speed, the tire pressure value, the maximum reference value of the tire pressure, the minimum reference value of the tire pressure, the tire temperature value, the maximum reference value of the tire temperature, and the minimum reference value of the tire temperature of each tire at each time point when the vehicle is in a driving state to obtain the tire condition evaluation index at each time point when the vehicle is in a driving state.

[0048] The specific formula for calculating the tire condition evaluation index at each time point when the vehicle is in driving condition is as follows: ;in, The vehicle is in driving state. Tire condition assessment index at a time point, The vehicle is in driving state. The time point The maximum reference value of the driving speed of each tire, The vehicle is in driving state. The time point The minimum reference value of the driving speed of each tire, The vehicle is in driving state. The time point The speed of each tire, The vehicle is in driving state. The driving coefficient of each tire, The vehicle is in driving state. The time point The maximum reference value of the tire pressure in each tire. The vehicle is in driving state. The time point The minimum reference value of the tire pressure of each tire, The vehicle is in driving state. The time point The tire pressure value of each tire, The vehicle is in driving state. The internal pressure coefficient of each tire, The vehicle is in driving state. The time point The maximum reference value of the tire's internal temperature, The vehicle is in driving state. The time point The minimum reference value of the tire internal temperature of each tire, The vehicle is in driving state. The time point The internal temperature of each tire, The vehicle is in driving state. The internal temperature coefficient of each tire, , , is the number of time points obtained, , is the number of tires on the vehicle.

[0049] It needs to be explained that , , The specific calculation process is: The maximum reference value of the driving speed, the minimum reference value of the driving speed, the maximum reference value of the tire pressure, the minimum reference value of the tire pressure, the maximum reference value of the tire temperature, and the minimum reference value of the tire temperature are analyzed for difference respectively, and the first The driving speed difference, tire pressure difference, and tire temperature difference of each tire are normalized and summed up after normalization to obtain the The tire status and value of the first tire, and then the standardized The driving speed difference, tire pressure difference, and tire temperature difference of each tire are respectively The tire condition and value of each tire are ratio analyzed, and the ratio analysis result is the corresponding coefficient.

[0050] During the vehicle manufacturing and testing phase, the manufacturer will calibrate and set the maximum and minimum reference values ​​for the driving speed based on different driving conditions (such as urban roads, highways, slippery roads, etc.) and tire specifications. Therefore, the maximum reference value and minimum reference value for the driving speed of each tire are obtained from here.

[0051] Each model has specific tire pressure recommendations, which are usually marked on the vehicle's door frame or in the user manual. These recommendations are based on the type of tire, the weight of the vehicle, the expected conditions of use, etc., so the maximum and minimum reference values ​​for each tire's internal pressure are obtained from there.

[0052] When manufacturers conduct tire performance tests in the laboratory, they record the changes in tire temperature under different conditions, especially under different load and speed conditions. These data are used to determine the maximum and minimum temperatures of the tire. Therefore, the maximum and minimum reference values ​​of the tire temperature are obtained from this data.

[0053] In this implementation scheme, by acquiring and analyzing the maximum and minimum reference values ​​of the driving speed, tire pressure and temperature of each tire, the system can more accurately evaluate the actual working status of the tire. These reference values ​​are derived from the manufacturer's testing and calibration under different driving conditions (such as urban roads, highways, wet roads, etc.), and can accurately reflect the performance of the tire in various environments. Comprehensive analysis of these reference values ​​and real-time data can more accurately detect abnormal conditions of the tire, such as excessive wear, uneven tire pressure or abnormal temperature increase. Compared with a single monitoring method, this method can provide a more reliable status assessment, help prevent potential tire failures, reduce accident risks, and improve driving safety. This method enables the system to adapt to a variety of driving scenarios by comprehensively analyzing multiple parameters of the tire status. Whether on urban roads, wet roads or highways, the system can use different reference values ​​to adjust the evaluation criteria and provide scenario-based safety status assessment. This flexibility The activity allows the system to be applied not only to various types of vehicles, but also to adapt to different driving environments and conditions. By dynamically adjusting the reference value and weight coefficient, the system can conduct a more detailed analysis and evaluation of the tire status according to the actual situation, and provide more accurate safety warnings and prompts. Through differential analysis and standardized processing of data such as driving speed, tire pressure and tire temperature, the system can calculate the tire status evaluation index at each time point in real time. This data-driven approach enables the system to actively monitor the vehicle status, identify potential risks, and take timely measures before problems occur. Compared with the traditional passive response mode, this active safety management method is more effective in preventing problems from occurring. For example, when the system detects a gradual decrease in tire pressure or an abnormal increase in tire temperature, it can notify the driver in advance to check or repair, thereby avoiding accidents. This initiative not only improves the safety of the vehicle, but also reduces maintenance costs and vehicle downtime, and improves the overall operating efficiency of the vehicle.

[0054] Specifically, the specific steps for obtaining the engine state evaluation index at each time point when the vehicle is in a driving state are as follows: obtain the vehicle's engine speed reference value, engine internal temperature reference value, oil pressure reference value, and fuel pressure reference value; conduct a comprehensive analysis of the engine speed value, engine internal temperature value, oil pressure value, and fuel pressure value at each time point when the vehicle is in a driving state, combined with the engine speed reference value, engine internal temperature reference value, oil pressure reference value, and fuel pressure reference value, to obtain the engine state evaluation index at each time point when the vehicle is in a driving state.

[0055] The specific formula for calculating the engine status evaluation index at each time point when the vehicle is in driving state is as follows: ; in, The vehicle is in driving state. The engine status evaluation index at a time point, The vehicle is in driving state. The engine speed reference value at a time point, is the engine speed reference value, is the engine speed weight coefficient, The vehicle is in driving state. The internal temperature of the engine at a certain time point, is the reference value of the engine internal temperature, is the engine internal temperature weight coefficient, The vehicle is in driving state. The oil pressure value at a time point, is the oil pressure reference value, is the oil pressure weight coefficient, The vehicle is in driving state. The fuel pressure value at a time point, is the fuel pressure reference value, is the fuel pressure weight coefficient, , , is the number of time points obtained.

[0056] It needs to be explained that , , , The specific calculation process is: standardize the vehicle's engine speed reference value, engine internal temperature reference value, oil pressure reference value, and fuel pressure reference value, and perform sum analysis after standardization to obtain the engine state and value, and then perform ratio analysis on the standardized vehicle's engine speed reference value, engine internal temperature reference value, oil pressure reference value, and fuel pressure reference value with the engine state and value, and the ratio analysis result is the corresponding weight coefficient.

[0057] During the engine design and development process, the manufacturer will calibrate the normal operating speed range of the engine based on the engine's design characteristics, target performance (such as power and torque output) and expected working environment. This range usually includes idle speed, economic speed range, maximum power output speed, etc. The engine speed reference value (usually in RPM) is determined by the manufacturer in engine bench tests. These tests simulate engine performance under various working conditions (such as idling, acceleration, high load, etc.).

[0058] The reference value of the engine's internal temperature is usually determined by the manufacturer based on the design of the engine cooling system, the heat resistance of the engine materials, and the engine's thermal management strategy. The manufacturer will set an optimal operating temperature range, usually between 90°C and 105°C (depending on the engine type and design). Through engine bench testing, the manufacturer will test the engine's internal temperature under various loads and environmental conditions to ensure that the engine will not be damaged due to overheating.

[0059] The oil pressure reference value is determined by the lubrication system requirements in the engine design. During the design and testing phase of the engine, the manufacturer will calibrate the oil pressure range at different speeds and loads to ensure that the engine is fully lubricated under all operating conditions. The engine bench test is used to determine the optimal range of oil pressure under different temperatures, viscosities and loads. These tests help identify the oil pressure reference value under normal working conditions.

[0060] The fuel pressure reference value is determined by the design of the fuel system and the combustion requirements of the engine. When designing the fuel supply system (including fuel pumps, injectors, etc.), the manufacturer will calibrate an appropriate fuel pressure range to ensure that the fuel can be injected into the engine's combustion chamber at the correct pressure. Through bench testing, the manufacturer will test the engine at different loads, temperatures and speeds to calibrate the optimal fuel pressure reference value. These tests ensure that the fuel supply system can operate normally under various conditions.

[0061] In this implementation scheme, by acquiring and analyzing reference values ​​and real-time data of multiple key parameters of the engine (speed, internal temperature, oil pressure, fuel pressure), the system can comprehensively evaluate the operating status of the engine. These reference values ​​are calibrated by the manufacturer during the design and testing of the engine according to the performance characteristics, design requirements and performance of the engine under various operating conditions. Therefore, these reference values ​​can accurately reflect the optimal performance range of the engine under different operating conditions. Combined with real-time monitoring data, the system can detect any abnormal conditions that deviate from the normal range, thereby more accurately identifying potential performance problems or signs of failure of the engine and providing more reliable safety warnings. This method can better diagnose the status of the engine by comprehensively analyzing multiple parameters such as the engine speed, internal temperature, oil pressure and fuel pressure. Abnormalities in different parameters may indicate different types of engine problems. For example, abnormally high internal temperature may mean a cooling system failure, while abnormally low oil pressure may indicate There is a problem with the lubrication system. By standardizing each parameter and performing ratio analysis, the system can identify the interrelationships and combined effects between multiple parameters. This multi-parameter analysis method improves the system's fault diagnosis capability, helps to detect and prevent potential engine problems early, and reduces maintenance costs and vehicle downtime. The design of the above method allows the system to dynamically adjust according to changes in real-time data and reference values. The calculation process of weight coefficients (such as engine speed weight coefficient, internal temperature weight coefficient, oil pressure weight coefficient, fuel pressure weight coefficient) enables the system to automatically adjust the influence weight of each parameter in the evaluation according to actual driving conditions and engine operating status. For example, under high load conditions, the weights of engine speed and fuel pressure may be increased to better evaluate the engine's power performance and the stability of the fuel supply system. This dynamic adjustment mechanism enhances the adaptability of the system, enabling it to provide the most accurate and reliable engine status evaluation under different driving environments and working conditions.

[0062] Specifically, the specific steps for obtaining the steering state evaluation index at each time point when the vehicle is in a driving state are as follows: respectively obtain the maximum reference value of the vehicle's steering wheel rotation angle and the maximum reference value of the tire steering angle of each tire; comprehensively analyze the steering wheel rotation angle value and the tire steering angle value of each tire at each time point when the vehicle is in a driving state, respectively in combination with the maximum reference value of the steering wheel rotation angle and the maximum reference value of the tire steering angle of each tire, to obtain the steering state evaluation index at each time point when the vehicle is in a driving state, and the specific formula is as follows: ;in, The vehicle is in driving state. The steering state assessment index at each time point, The vehicle is in driving state. The steering wheel rotation angle value at a time point, is the maximum reference value of the vehicle's steering wheel rotation angle, is the comprehensive weighted coefficient of the steering wheel rotation angle, The vehicle is in driving state. The time point The tire steering angle value of each tire, For the vehicle The maximum reference value of the tire steering angle of each tire, For the vehicle The weighting factor of the steering angle of each tire, is the comprehensive weighted coefficient of tire steering angle, , , is the number of time points obtained, , is the number of tires on the vehicle.

[0063] It should be explained that the vehicle is assumed to have a four-wheel steering system here, so the steering angles of all tires of the vehicle need to be analyzed.

[0064] The specific calculation process is: sum and analyze the maximum reference value of the tire steering angle of each tire of the vehicle to obtain the tire steering sum value, and then The maximum reference value of the tire steering angle of each tire is compared with the tire steering sum value to obtain the vehicle's first Steering angle weighting factor for each tire.

[0065] , The specific calculation process is as follows: the maximum reference value of the tire steering angle of each tire of the vehicle is combined with the corresponding steering angle weighting coefficient for weighted calculation to obtain the steering angle sum value, and then the steering angle sum value and the maximum reference value of the steering wheel rotation angle are standardized, and the sum analysis is performed after the standardization to obtain the steering comprehensive sum value, and then the standardized steering angle sum value and the maximum reference value of the steering wheel rotation angle are ratio analyzed with the steering comprehensive sum value, and the ratio result is the corresponding comprehensive weighting coefficient.

[0066] During the vehicle design and manufacturing process, automobile manufacturers will set the maximum reference value of the steering wheel rotation angle based on the vehicle type, size, and steering system design (such as steering ratio, power steering system, etc.). This is the maximum angle of the steering wheel from the center position to the left and right extreme positions, usually between ±540° and ±720° (i.e. 1.5 to 2 turns), depending on the design of the vehicle (such as a car, truck or racing car).

[0067] During the vehicle development process, the manufacturer calibrates the maximum steering angle of each tire by testing the vehicle's steering performance under various driving conditions. These tests include low-speed turning, emergency avoidance, high-speed lane changes, etc., to ensure that the maximum steering angle of the tire is safe and meets design requirements under various conditions. For vehicles with four-wheel steering function, the maximum reference value of the rear wheel steering angle needs to be adjusted under different driving conditions to ensure coordination with the front wheels and steering performance.

[0068] In this implementation, by comprehensively analyzing the steering wheel rotation angle and the steering angle of each tire at each time point, the system can accurately evaluate the steering state of the vehicle under various driving conditions. Using the maximum reference value of the steering wheel rotation angle and the maximum reference value of the tire steering angle as a benchmark, the system can detect whether the steering state of the vehicle is within a safe range. This method not only focuses on the front-wheel steering, but also considers the influence of the rear-wheel steering angle in the four-wheel steering system, ensuring a comprehensive evaluation of the overall steering behavior of the vehicle, which can effectively identify potential steering anomalies or faults (such as understeer or oversteer), thereby improving the steering safety of the vehicle. This method specifically considers the steering angles of all tires in the four-wheel steering system and performs a weighted analysis of the steering angle of each tire. This design helps to ensure the coordination of the front and rear wheel steering angles and optimizes the steering performance of the vehicle under different driving conditions. By calculating the steering angle of each tire By adding the weighted coefficient to the steering wheel rotation angle and performing standardized processing, the system can adjust the steering force of each tire in real time to ensure that the vehicle maintains the best steering response and stability in complex driving situations such as low-speed turning and high-speed lane changing. This advantage significantly improves the safety and handling of the vehicle in emergency avoidance and sharp turns. By introducing the comprehensive weighted coefficient and standardized processing, the method can dynamically adjust the evaluation criteria of the steering state according to real-time data. The calculation process of the comprehensive weighted coefficient of the steering wheel rotation angle and the comprehensive weighted coefficient of the tire steering angle ensures the flexibility and adaptability of the system under different driving conditions. For example, when driving at high speed, the system may reduce the sensitivity of the steering wheel angle, and may increase the steering ratio of the rear wheels when driving at low speed. This dynamic adjustment mechanism enables the system to be optimized according to the actual driving environment, improves the overall steering performance and safety of the vehicle, and reduces the operating burden of the driver in complex driving environments.

[0069] Specifically, the driving safety status evaluation index of each time point when the vehicle is in driving state is compared with the preset evaluation range for safety judgment analysis, and the specific steps of taking corresponding measures according to the judgment and analysis results are as follows: judge whether the driving safety status evaluation index of each time point when the vehicle is in driving state is within the preset evaluation range; if the driving safety status evaluation index of the vehicle is in driving state is outside the preset evaluation range, send a safety abnormality alarm to the driver, and compare and analyze the tire status evaluation index, engine status evaluation index, and steering status evaluation index with the preset tire status evaluation range, engine status evaluation range, and steering status evaluation range, identify abnormal indexes, and inform the driver in voice form.

[0070] In this implementation scheme, by comparing the driving safety status evaluation index at each time point when the vehicle is driving with the preset safety evaluation range, the system can monitor the overall driving safety status of the vehicle in real time. This real-time analysis method enables the system to quickly detect any abnormal situation beyond the safety range, ensuring that the driver can receive a safety alarm at the earliest time. This method greatly improves the real-time performance of vehicle safety monitoring, can more accurately evaluate the safety status of the vehicle, reduce potential safety risks, and ensure the safety of the driver and passengers. When the system detects that the driving safety status evaluation index exceeds the preset safety range, it not only issues an alarm, but also further analyzes whether each specific status evaluation index (tire status, engine status, steering status) is within its respective safety range. In this way, the system can accurately identify the specific source of the abnormality and provide targeted For example, if the tire condition assessment index exceeds the normal range, the system will remind the driver in voice that the tire is in poor condition. This clear abnormal cause prompt helps the driver quickly identify the problem, improves response efficiency, and reduces panic or wrong reactions caused by unclear alarms. The system provides safety alarms and abnormal index prompts to the driver in voice form, which greatly enhances user-friendliness. The voice prompt method eliminates the need for the driver to check the dashboard or screen in an emergency, and can focus on the road, reducing the risk of secondary accidents caused by distraction. In addition, the voice prompt can also provide more detailed guidance, such as suggesting deceleration, checking tire pressure or engine temperature, etc., to improve the driver's understanding and response to system alarms. This humanized design makes the safety system more intelligent and easy to use, improving the overall driving experience.

[0071] See also Figure 3The embodiment of the present invention provides a technical solution: a vehicle driving state safety assessment system, comprising: a data acquisition module, a state assessment module, a safety analysis module, and a judgment analysis module; the data acquisition module is used to acquire tire state data, engine state data, and steering state data at each time point when the vehicle is in driving state in real time; the state assessment module is used to perform data analysis on the tire state data, engine state data, and steering state data at each time point when the vehicle is in driving state, respectively, to obtain the tire state assessment index, engine state assessment index, and steering state assessment index at each time point when the vehicle is in driving state; the safety analysis module is used to perform comprehensive analysis on the tire state assessment index, engine state assessment index, and steering state assessment index at each time point when the vehicle is in driving state, respectively, to obtain the driving safety state assessment index at each time point when the vehicle is in driving state; the judgment analysis module is used to perform safety judgment analysis on the driving safety state assessment index at each time point when the vehicle is in driving state and a preset assessment range, and take corresponding measures according to the judgment analysis results.

[0072] In summary, this application has at least the following effects: By acquiring and analyzing multiple key status data in real time, such as tire status, engine status and steering status, it can fully reflect the actual driving status of the vehicle. Compared with the traditional evaluation method that only relies on a single parameter, this method can more accurately evaluate the safety and stability of the vehicle under various driving conditions. By comprehensively analyzing the status data at each time point, this method can identify potential safety hazards and promptly remind the driver to take corresponding measures, effectively preventing accidents and improving the overall safety of the vehicle.

[0073] By dynamically adjusting safety assessment criteria and thresholds based on the vehicle's performance in different environments and driving conditions, for example, on slippery roads or in emergency steering situations, the system will automatically enhance monitoring of relevant status parameters (such as tire status and steering status) and adjust the corresponding weight coefficients. This flexible assessment mechanism enables the vehicle to maintain optimal safety performance under various driving conditions, helps reduce false alarms and missed alarms, and improves the accuracy and response speed of the system.

[0074] By comprehensively analyzing multiple status assessment indexes, this method provides a holistic safety status assessment method. This method can not only detect single status abnormalities, but also identify the mutual influence and combined effects between multiple parameters to form a more comprehensive safety status assessment. This comprehensive assessment capability enables the system to provide more accurate warning information and decision support in complex driving environments, helping drivers to respond to potential dangerous situations in a timely manner and ensure the safety of vehicles and passengers.

[0075] By integrating multiple functional modules, including data acquisition module, status assessment module, safety analysis module and judgment analysis module, a fully automated vehicle safety status monitoring and assessment process is realized. The data acquisition module can collect and transmit various status data in real time, such as tires, engines, steering, etc., to ensure the accuracy and timeliness of the information. On this basis, the status assessment module and the safety analysis module conduct comprehensive data analysis and comprehensive assessment without manual intervention, and can quickly calculate the vehicle's safety status assessment index. The judgment analysis module can automatically identify potential risks and take corresponding early warning or safety measures according to the preset safety assessment standards. Through this highly integrated design, the system realizes the automation of the entire process from data acquisition to safety assessment to emergency response, significantly improving the efficiency and reliability of vehicle driving safety management, reducing dependence on drivers and operational complexity, and improving the overall user experience.

[0076] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0077] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A vehicle driving state safety assessment method, characterized in that: The following steps are involved: Real-time acquisition of tire status data, engine status data, and steering status data at each time point when the vehicle is driving; Performing data analysis on tire status data, engine status data, and steering status data at each time point when the vehicle is in driving state, respectively, to obtain a tire status evaluation index, an engine status evaluation index, and a steering status evaluation index at each time point when the vehicle is in driving state; Comprehensively analyzing the tire status evaluation index, engine status evaluation index, and steering status evaluation index at each time point when the vehicle is in driving state, respectively, to obtain the driving safety status evaluation index at each time point when the vehicle is in driving state; The driving safety status evaluation index of the vehicle at each time point during driving is compared with the preset evaluation range for safety judgment analysis, and corresponding measures are taken according to the judgment and analysis results.

2. The vehicle driving state safety assessment method according to claim 1, characterized in that: The tire status data specifically includes the driving speed value, tire pressure value, and tire temperature value of each tire of the vehicle; the engine status data specifically includes the engine speed value, engine internal temperature value, oil pressure value, and fuel pressure value; the steering status data specifically includes the steering wheel rotation angle value and the tire steering angle value of each tire.

3. The vehicle driving state safety assessment method according to claim 1, characterized in that: The specific formula for calculating the driving safety status evaluation index at each time point when the vehicle is in driving state is as follows: ； in, The vehicle is in driving state. Driving safety status evaluation index at a time point, The vehicle is in driving state. Tire condition assessment index at a time point, is the tire condition coefficient stored in the database, The vehicle is in driving state. The engine status evaluation index at a time point, is the engine status coefficient stored in the database, The vehicle is in driving state. The steering state assessment index at each time point, is the steering state coefficient stored in the database, , is a natural constant, , is the number of time points obtained.

4. The vehicle driving state safety assessment method according to claim 2, characterized in that: The specific steps of obtaining the tire condition evaluation index at each time point when the vehicle is in driving condition are as follows: Respectively obtain a maximum reference value of the driving speed, a minimum reference value of the driving speed, a maximum reference value of the tire pressure, a minimum reference value of the tire pressure, a maximum reference value of the tire temperature, and a minimum reference value of the tire temperature of each tire of the vehicle; A comprehensive analysis is performed on the driving speed value, maximum driving speed reference value, minimum driving speed reference value, tire pressure value, maximum tire pressure reference value, minimum tire pressure reference value, tire temperature value, maximum tire temperature reference value, and minimum tire temperature reference value of each tire at each time point when the vehicle is driving, to obtain a tire condition evaluation index at each time point when the vehicle is driving.

5. The vehicle driving state safety assessment method according to claim 4, characterized in that: The specific formula for calculating the tire condition evaluation index at each time point when the vehicle is in driving condition is as follows: ； in, The vehicle is in driving state. Tire condition assessment index at a time point, The vehicle is in driving state. The time point The maximum reference value of the driving speed of each tire, The vehicle is in driving state. The time point The minimum reference value of the driving speed of each tire, The vehicle is in driving state. The time point The speed of each tire, The vehicle is in driving state. The driving coefficient of each tire, The vehicle is in driving state. The time point The maximum reference value of the tire pressure in each tire. The vehicle is in driving state. The time point The minimum reference value of the tire pressure of each tire, The vehicle is in driving state. The time point The tire pressure value of each tire, The vehicle is in driving state. The internal pressure coefficient of each tire, The vehicle is in driving state. The time point The maximum reference value of the tire's internal temperature, The vehicle is in driving state. The time point The minimum reference value of the tire internal temperature of each tire, The vehicle is in driving state. The time point The internal temperature of each tire, The vehicle is in driving state. The internal temperature coefficient of each tire, , , is the number of time points obtained, , is the number of tires on the vehicle.

6. The vehicle driving state safety assessment method according to claim 2, characterized in that: The specific steps of obtaining the engine state evaluation index at each time point when the vehicle is in driving state are as follows: Obtain the vehicle's engine speed reference value, engine internal temperature reference value, oil pressure reference value, and fuel pressure reference value; The engine speed value, engine internal temperature value, oil pressure value, and fuel pressure value at each time point when the vehicle is in a driving state are comprehensively analyzed in combination with the engine speed reference value, engine internal temperature reference value, oil pressure reference value, and fuel pressure reference value to obtain the engine state evaluation index at each time point when the vehicle is in a driving state.

7. The vehicle driving state safety assessment method according to claim 6, characterized in that: The specific formula for calculating the engine status evaluation index at each time point when the vehicle is in driving state is as follows: ； in, The vehicle is in driving state. The engine status evaluation index at a time point, The vehicle is in driving state. The engine speed reference value at a time point, is the engine speed reference value, is the engine speed weight coefficient, The vehicle is in driving state. The internal temperature of the engine at a certain time point, is the reference value of the engine internal temperature, is the engine internal temperature weight coefficient, The vehicle is in driving state. The oil pressure value at a time point, is the oil pressure reference value, is the oil pressure weight coefficient, The vehicle is in driving state. The fuel pressure value at a time point, is the fuel pressure reference value, is the fuel pressure weight coefficient, , , is the number of time points obtained.

8. The vehicle driving state safety assessment method according to claim 2, characterized in that: The specific steps of obtaining the steering state evaluation index at each time point when the vehicle is in driving state are as follows: Respectively obtain a maximum reference value of the vehicle's steering wheel rotation angle and a maximum reference value of the tire steering angle of each tire; The steering wheel rotation angle value and the tire steering angle value of each tire at each time point when the vehicle is in driving state are comprehensively analyzed in combination with the maximum reference value of the steering wheel rotation angle and the maximum reference value of the tire steering angle of each tire, and the steering state evaluation index at each time point when the vehicle is in driving state is obtained. The specific formula is as follows: ； in, The vehicle is in driving state. The steering state assessment index at each time point, The vehicle is in driving state. The steering wheel rotation angle value at a time point, is the maximum reference value of the vehicle's steering wheel rotation angle, is the comprehensive weighted coefficient of the steering wheel rotation angle, The vehicle is in driving state. The time point The tire steering angle value of each tire, For the vehicle The maximum reference value of the tire steering angle of each tire, For the vehicle The weighting factor of the steering angle of each tire, is the comprehensive weighted coefficient of the tire steering angle, , , is the number of time points obtained, , is the number of tires on the vehicle.

9. The vehicle driving state safety assessment method according to claim 1, characterized in that: The specific steps of conducting safety judgment analysis on the driving safety status evaluation index at each time point of the vehicle's driving state and the preset evaluation range, and taking corresponding measures according to the judgment and analysis results are as follows: Determine whether the driving safety status evaluation index at each time point during the driving state of the vehicle is within a preset evaluation range; If the driving safety status evaluation index of the vehicle is outside the preset evaluation range, a safety abnormality alert is sent to the driver.

10. A vehicle driving state safety assessment system, applying the vehicle driving state safety assessment method according to any one of claims 1 to 9, characterized in that: include: Data acquisition module, status assessment module, safety analysis module, judgment analysis module; The data acquisition module is used to acquire tire status data, engine status data, and steering status data at each time point when the vehicle is in driving state in real time; The state evaluation module is used to analyze the tire state data, engine state data, and steering state data at each time point when the vehicle is in a driving state, and obtain the tire state evaluation index, engine state evaluation index, and steering state evaluation index at each time point when the vehicle is in a driving state; The safety analysis module is used to comprehensively analyze the tire state evaluation index, the engine state evaluation index, and the steering state evaluation index at each time point when the vehicle is in a driving state, and obtain the driving safety state evaluation index at each time point when the vehicle is in a driving state; The judgment and analysis module is used to perform safety judgment and analysis on the driving safety status evaluation index at each time point when the vehicle is in driving state and a preset evaluation range, and take corresponding measures according to the judgment and analysis results.

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