Method and measuring assembly for determining the wheel or axle geometry of a vehicle

US8836764B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Andreas Gruetzmann · Stuttgart, DE
• Steffen Abraham · Hildesheim, DE
• Andreas Haja · Oldenburg, DE
• Christian Knoll · Stuttgart, DE
• Daniel Muhle · Hannover, DE
• Matthias Gebhard · Stuttgart, DE

Key dates

• Filing date: Jul 27, 2009
• Grant date: Sep 16, 2014
• Expiry date: Oct 17, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B2210/283
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method for determining a wheel or axle geometry of a vehicle, the following steps are provided: illuminating a wheel region with structured and with unstructured light during a motion of at least one wheel and/or of the vehicle; acquiring multiple images of the wheel region during the illumination, in order to create a three-dimensional surface model having surface parameters, a texture model having texture parameters, and a motion model having motion parameters of the sensed wheel region; calculating values for the surface parameters, the texture parameters, and the motion parameters using a variation computation as a function of the acquired images, in order to minimize a deviation of the three-dimensional surface model, texture model, and motion model from image data of the acquired images; and determining a rotation axis and/or a rotation center of the wheel as a function of the calculated values of the motion parameters.