N° 58
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Mesure de la distance d’une plaque de verre transparente Pour la préhension de plaque de verre, ilest necessaire de connaître le positionnement. La relectivité diffuse étant très faible pour le verre, seuls les capteurs pouvant analyser les reflexions directes sont destinés à cette application.
Distance measurement on transparent glass plates
During the handling process of glass plates the distance of the glass surface must be controlled. As during the beveling process the glass plate must be positioned in a way that the glass edges can be feed symmetrically into the abrasive block of the grinding machine, otherwise the phases on both sides of the glass plate are different. Due to the fact, that the glass surface delivers nearly no diffuse reflected light but only direct reflected light, a standard laser displacement sensor cannot be used.
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