Method for calculating deflection and load of rolling tire based on image method

Abstract

The invention discloses a method for calculating the deflection and load of a rolling tire based on an image method. A tire and a rim are included, the tire is provided with a mark area, the rim is provided with a camera assembly, and the mark area is provided with a ruler and a strip-shaped area perpendicular to the ruler; and the deflection and load calculation method comprises the following steps: presetting a camera assembly; driving a vehicle to run, shooting image data of a marked area through the camera assembly, and recording the image data of a highest point position; recording the initial position of a scale by using the camera assembly, calculating the relative slip amount after tires and rims slip, and correcting the deformation amount of a strip-shaped area; and obtaining data recorded for multiple times in the vehicle running process, and calculating the tire deflection and the tire load. According to the invention, the shape change video of the marked area in the tire during vehicle driving is shot and transmitted to the background, and then the deflection and the load of the rolling tire are calculated in real time, and the method has the advantages of simple structure, low cost, easy realization and the like.

Description

technical field [0001] The invention relates to the technical field of tire sinkage and load calculation, in particular to a method for calculating the sinkage and load of rolling tires based on an image method. Background technique [0002] Tires are the only part of the car that is in contact with the ground. Therefore, analyzing the information on the tires during the movement of the car is of great significance to improving the safety of the vehicle. Intelligent tires are an important trend in the development of the tire industry. At present, there are relatively mature tires. However, relatively speaking, the real-time detection of tire dynamic load is more difficult and has not yet been commercialized. The tire load can be calculated from tire data such as tire sinkage and tire pressure, and can also be measured The length of the contact mark and the tire pressure are calculated. [0003] The disadvantage of the prior art is that, by arranging the acceleration sensor ...

AI Technical Summary

Problems solved by technology

[0003] The shortcoming of the existing technology is that by arranging the acceleration sensor inside the tire, the signal change law of the sensor is used to calculate the length of the tire contact mark, so as to calculate the vertical load of the tire

The disadvantage is that the scheme is complicated, the cost is high, and the data cannot be viewed in real time. Most of them adopt the method of collecting first and then processing. During this period, the tires need to stop running or even the equipment needs to be dismantled, which is difficult to achieve under the actual vehicle operating conditions.

Moreover, the applicability is limited, and it cannot adapt to complex vehicle conditions in various environments, which may easily lead to inaccurate data

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