Patent ID: 8413491
Filing Date: 2013-04-09
Classification: B66C,G01M

Abstract:
1. A method of measuring a center of gravity of slabs, the method comprising: a first step of, when a vehicle in which slabs to be moved are loaded arrives, receiving information about dimensions or weight Pi of each of the slabs loaded in the vehicle from a main system; a second step of scanning the slabs using an image scanner, obtaining information about a position and configuration of each of the slabs from images of the scanned slabs, and calculating a center of gravity of each of the slabs Ci based on the information about the position and configuration; a third step of calculating a center of gravity Ct and grip position of all of the slabs, to be moved each time, based on the information about the slabs obtained at the first and second steps; and, a fourth step of gripping and moving the slabs using an unmanned crane according to the grip position information obtained at the third step, wherein the information about the position and configuration obtained at the second step comprises one or more of a length, thickness, and amount of bending of each slab, and wherein the center of gravity Ci of each slab calculated at the second step is calculated by the following equation by using a distance ai from an arbitrarily selected reference point to one end of each slab in a length direction and a length Li of each slab: