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Method for measuring tire static load mark

A static load and measurement method technology, applied in image data processing, instruments, calculations, etc., can solve problems such as low measurement accuracy, low detection efficiency, and poor applicability, and achieve high precision, improved accuracy, and fast speed.

Inactive Publication Date: 2019-03-08
SOUTHEAST UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to provide a tire static load imprint measurement method to solve the problems of low measurement accuracy, low detection efficiency and poor applicability of the existing tire static load imprint

Method used

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  • Method for measuring tire static load mark
  • Method for measuring tire static load mark
  • Method for measuring tire static load mark

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Experimental program
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Embodiment Construction

[0018] The present invention will be described below in conjunction with the accompanying drawings.

[0019] As shown in 3, the tire static print test system includes a test bench and a workstation 8. The test bench includes a common bench 3 and a glass table 4. When the system is working, the tire 1 is subjected to a load and contacts the glass table 4 to form an impression. Two lasers 2 They are installed on the front and rear sides of the tire respectively, and are connected to and controlled by the workstation 8 using WIFI. Two sets of LED lighting sources 5 are fixed under the glass platen, and the LED light sources are connected to and controlled by the controller 7 , and the controller 7 is connected to the workstation 8 at the same time. A camera 6 is arranged directly under the glass platen to collect images of tire contact marks. The tire and the glass platform contact under load to form a contact surface. The camera is fixed directly under the glass platform to en...

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Abstract

A method for measuring tire static load mark includes irradiating front and rear contact edges of tire and glass platen with laser beam emitted by laser to make beam fully contact with tire ground edge; In dark field mode, placing the camera under the glass platform to capture the tire ground mark, and collecting the images of ground mark under different loads; using the Gamma transform and binarization to obtain the preprocessed image; selecting the marking points on the tire ground mark preprocessing images; according to the shape of the tire ground mark, selecting the fitting order of the curve and fitting the corresponding curve of the mark points, or using the spline interpolation to obtain the tire ground mark boundary curve. The method of the invention has the advantages of high detection accuracy, fast test speed and adaptability to different pattern tires, and overcomes the defects that the existing tire wear test system can not measure the ground mark of different pattern tires and the measurement accuracy is poor.

Description

technical field [0001] The invention relates to tire footprint measurement, in particular to a tire static load footprint measurement method. Background technique [0002] Tires are an important part of a car, and the performance of the tires has a great impact on the vehicle. In the modern tire manufacturing industry, the tire performance is usually analyzed through the ground contact characteristics of the tire. Among them, there is a method of analyzing the tire contact footprint generated by applying a static tire load to study the running resistance, friction performance and other characteristics of the tire. [0003] There are mainly pressure methods and visual methods for obtaining tire static load imprints. The pressure method mainly uses a pressure sensor. Patent CN104897497A discloses a method for analyzing tire contact pressure distribution and improving wear resistance. The pressure at different positions on the tire contact surface is collected, and then the co...

Claims

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T7/0004
Inventor 李煊鹏薛启凡
Owner SOUTHEAST UNIV
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