Method and device for the online determination of the micrometric topography of moving products

摘要

The method involves using bright field and oblique illuminations and a matrix camera e.g. charge coupled device (CCD) camera, associated with a lens for obtaining a preset spatial resolution. A motor displaces an industrial microscope along its optical axis (Z) to ensure its focalization on a moving surface. A unit positions the axis perpendicular to a plane containing the surface. An image of a surface part of given dimensions is acquired and is digitally processed to isolate a projection of a micrometric line. A local shelf catalogue is formed by a line comprised between external lines. An independent claim is also included for a device for implementing a method of establishing a shelf catalogue and online evaluation of 2D and 3D roughness parameters of a rolling surface.