Tracking and locating components in a precast storage yard utilizing radio frequency identification technology and GPS

Problems in existing manual methods of identifying, tracking and locating highly customized prefabricated components result in late deliveries, double-handling and misplacement of components, and incorrect installations that lead to schedule delays and increased labor costs. To eliminate these deficiencies, an automated system using radio frequency identification technology combined with GPS technology, requiring minimal worker input, is proposed. The requirements and approaches needed to utilize the system for locating precast concrete components with minimal worker input in the storage yard of a manufacturing plant were developed. Based on the requirements identified and approaches formalized, a prototype system was developed, assembled and tested in the field at a precast storage yard. The prototype system succeeded in automatically identifying pieces that were relocated, demonstrating feasibility of the approach. (C) 2006 Elsevier B.V. All rights reserved.