METHOD OF CLOUD TRIANGULATION OF HOT-ROLLED PRODUCTS THICKNESS Russian patent published in 2016 - IPC G01B11/03 

FIELD: metallurgy.

SUBSTANCE: opposite sides of a rolled product are scanned by a set of light beams with a known space distribution of intensities. As a result of these beams intersection by the rolled product surface clouds of illuminated points are formed at the opposite surfaces of the rolled product. Optical systems register emission dissipated by the rolled product surface in the form of a 2D projective distribution of the clouds of the illuminated points. At that the space distribution of the intensities of the set of light beams is selected such that the projective distribution of the clouds of the illuminated points in the plane of images of the optical systems are characterised by the purpose parameters resistant against local distortions of the clouds of the illuminated points and depending on the position of the rolled product in space and its inclination. During the rolled product measurement the purpose parameters are calculated of the projective distribution of the clouds of the illuminated points. The rolled product thickness is determined using mutually-one-to-one dependence between the purpose parameters of the projective distribution of the clouds of the illuminated points, geometric position of the measured rolled product in space and its thickness obtained during calibration.

EFFECT: increased accuracy of the product thickness determination during the hot-rolled product measurements upon the presence of high gradients of temperature of air masses in the area of the optical signals distribution.

7 dwg