Yard Management system, yard management method and computer program

摘要

The present invention, already arrived in yards (501-504) to place the metal material conveying equipment for each conveying unit of the metal material not yet arrived in the metal material and the yard (1A, 1B, 2A, 2B) is conveyed by, yards (501-504) order a product corresponding to the payout order to process after Motoyama (X, Y) made of the pile metal material in a yard management system for creating the initial conveying time or the last transport time of the metal material of the transfer subject, including a non-arrival material and already arrived material was used as a decision variable, and the transport constraints regarding the transport order of the metal material, Motoyama (X, Y) is expressed with a transport objective function of minimizing the time the metal material is accumulated in the process of being conveyed in the conveying constraints The minimizes the transport objective function in a range satisfying, it is possible to derive the optimum value of the initial conveyance time and the final conveying time of the metal material, based on both the optimum value, the metal before it is placed in Motoyama (X, Y) whether to temporarily placed the timber in the yard (501-504) is required to form the temporary pile, it is determined for each of the metal material, it is intended to determine the metal material to be temporarily placed interest.