Patent ID: 6615650
Filing Date: 2003-09-09
Classification: G01M

Abstract:
A method of testing a tire by determining form changes of the tire caused by changing an inner tire pressure, and determining structural characteristics and defects of the tire, comprising the following steps:(a) rotating the tire relative to a camera; (b) projecting light sections on a tire surface; (c) capturing projected light sections by the camera at defined rotary positions of the tire relative to the camera; (d) applying signals representing the captured projected light sections to an image processing system; (e) determining the shape of the captured projected light sections by the image processing system; (f) determining the shape of the tire surface from the shape of the captured projected light sections; (g) repeating steps (a) through (f) for different inflation pressures of the tire; and (h) comparing the shapes of the tire surface obtained in step (f) for different inflation pressures of the tire for determining shape changes of the tire due to changes in the inflation pressure.