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Tire deformation online testing device and testing method based on light streams

An online testing and tire technology, applied in tire measurement, measuring devices, optical devices, etc., can solve the problems of complex sensor structure, complex calculation model, difficult tire layout, etc., achieve high-speed image capture, stable and reliable system, and reduce burden effect

Inactive Publication Date: 2014-06-25
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some deficiencies in these existing sensors: 1) The acceleration sensor directly measures the acceleration in all directions, and the calculation model from acceleration to deformation is very complicated and requires a large amount of calculation; 2) The PSD photoelectric sensor has high precision, but The high price is not conducive to popularization in automotive products, and the structure of this kind of sensor is complicated, and the layout inside the tire is difficult, so it is not suitable for mass production; 3) It is difficult for piezoelectric film sensors to measure multi-directional deformation

Method used

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  • Tire deformation online testing device and testing method based on light streams
  • Tire deformation online testing device and testing method based on light streams
  • Tire deformation online testing device and testing method based on light streams

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Embodiment approach

[0019] refer to figure 1 and figure 2 , a tire deformation measurement device, including: an optical flow sensor 1, a lens holder 2, a lens 3, a reflective surface 4, a single-chip microcomputer 5, a light source 6, a wireless transmission module 7, and a battery 8.

[0020] Wherein, the reflective surface 4 is located at the inner surface of the tire tread, and the reflective surface 4 is coated with a reflective coating to realize the recognition of the lateral and longitudinal deformation of the tire carcass. An optical flow sensor 1, a lens bracket 2, a lens 3, a single-chip microcomputer 5, a light source 6, a wireless transmission module 7, and a battery 8 are fixedly connected to the rim directly above it. Wherein, one end of the lens bracket 2 is fixedly connected to the optical flow sensor 1 , and the other end is fixedly connected to the lens 3 .

[0021] refer to Figure 5 , the electrical connection relationship of the present invention is as follows: the optic...

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Abstract

The invention provides a tire deformation online testing device and a testing method based on light streams. Instantaneous measurement of a deformed tire body during running can be achieved, and slip angles, slip rate and other motion information and tire lateral force, aligning toque, longitudinal force and other force information of tires can be obtained through data processing and model calculation. The testing device consists of a light stream sensor, a lens bracket, a lens, a light reflecting surface, a single chip microcomputer, a light source, a wireless transmission module and a battery. By adopting the testing device, in-tire longitudinal deformation measurement and in-tire lateral deformation measurement can be performed based on the light stream sensor. The testing device and the testing method can provide real-time tire body deformation information in all directions for chassis electric control systems of passenger vehicles and commercial vehicles, corresponding tire force and tire-road-surface adhesion information can be obtained by further combining the tires and whole vehicle dynamics, and accordingly the chassis electric control performance and whole vehicle safety are improved. The tire deformation online testing device is simple in structure, easy to integrate, low in cost, suitable for mass production and high in efficiency.

Description

technical field [0001] The invention belongs to the field of tire state online testing and vehicle dynamics control, and specifically relates to a tire deformation testing device and method based on the principle of optical flow, which can provide real-time tire testing for the chassis electronic control systems of passenger cars and commercial vehicles. Based on the anisotropic deformation information of the body, the corresponding tire force and tire-road adhesion information can be obtained by further combining the tire and vehicle dynamics, so as to improve the electronic control performance of the chassis and the safety of the vehicle. Background technique [0002] In-tire sensing measurement of tire carcass deformation is the core technology of smart tires. In practice, people have tried a variety of sensors, including: acceleration sensors, PSD (Position Sensitive Deflector) photoelectric sensors, and piezoelectric film sensors. There are some deficiencies in these ex...

Claims

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Application Information

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IPC IPC(8): G01B11/16
CPCB60C23/066
Inventor 庄晔席平
Owner JILIN UNIV
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