Apparatus for optical monitoring of surface appearance for particulate solids in bulk consignments employs multiple cameras focussed on faces of an imaginary polyhedron located at a point within a sample feed trajectory

摘要

Particles are successively fed (44) into a fall curve trajectory passing through a point at which multiple cameras (7-10) are perpendicularly focussed on faces (39.1-39.4) of an imaginary tetrahedron, or cube. Typically four or six digital cameras may transmit pictures to an observation screen or preferably for computer evaluation.