Dynamic monitoring method and system for safety performance of automobile wheel

Abstract

The invention discloses a dynamic monitoring method and system for the safety performance of an automobile wheel. The method comprises the steps: respectively sensing the three-dimensional acceleration of the suspension and the three-dimensional accelerations, the three-dimensional angular velocities, the three-dimensional geomagnetic intensities and the tire pressure temperatures of a vehicle body and a wheel by using a combined sensor; calculating a motion attitude parameter of the vehicle body through the three-dimensional acceleration parameter, the three-dimensional angular velocity parameter of the vehicle body and the three-dimensional geomagnetic intensity parameter of the vehicle body; calculating a motion attitude parameter of the wheel through the three-dimensional accelerationparameter, the three-dimensional angular velocity parameter and the three-dimensional geomagnetic intensity parameter of the wheel; calculating a load parameter of the through the motion attitude parameter of the vehicle body, the motion attitude parameter of the wheel and the vertical acceleration of the suspension; outputting a signal through a wheel acceleration sensor, and obtaining a wheel braking parameter through signal processing; carrying out the fusion of the motion attitude data of the wheel, the dynamic load data of the wheel, the braking data of the wheel and the pressure temperature data of a tyre to obtain a change trend of the safety performance of the wheel. The system includes a wheel sensing module, a vehicle body sensing module, a suspension sensing module, and an in-vehicle central control module.

Description

technical field [0001] The invention relates to the technical field of motor vehicle running safety performance detection, in particular to a method and system for dynamic monitoring of automobile wheel safety performance. Background technique [0002] Motor vehicle operation safety performance detection is an important means to ensure the safe operation of motor vehicles. The dynamic detection technology of motor vehicle operation safety performance is used to detect the safety status and operation indicators of motor vehicle operation, timely discover and prevent motor vehicle failures, and ensure the safe operation of motor vehicles. It is of great significance; it is a major social public welfare technical work related to the safety of the country and people's lives and properties, it is an important technical support to ensure the safety of motor vehicles, and it is a very important technical guarantee for the safe operation of motor vehicles by government management dep...

AI Technical Summary

Problems solved by technology

[0004] The monitoring parameters of the existing wheel safety performance detection methods cannot meet the requirements of comprehensive monitoring of wheel safety performance. Only tire pressure and other parameters are measured separately, and there is no comprehensive measurement of wheel motion attitude, dynamic load, and braking that truly and dynamically reflect the safe running state of the wheel. parameters, tire pressure and temperature parameters, it is impossible to accurately obtain the safety performance of the wheels during the driving process of the car; thus, it is impossible to effectively monitor the safety status of the wheels, which is not conducive to the prediction and evaluation of the safety status of the wheels during operation

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