Location management of products in display cabinets at a rental shop using multiple RFID tags

Product inventory and location management systems using IDs in RFID tags are now commercially introduced. However, systems that require highly precise product locations need to use multiple tag sensors. This requirement increases the system cost. These systems also require a database system for ID-based management. This paper proposes a location management method that requires only a single tag sensor and uses only passive tags. Specifically, product information (category and product name) is recorded in each tag, and two tag types (product tag and cabinet tag) are defined. The paper proposes that the system autonomously identifies product locations using inter-tag communication and category information, and updates product location information. The paper demonstrates the effectiveness of the proposed location management method through experiments with an experimental system developed.