Research And Implementation Of Dynamic Intersection Algorithm Based On UHF RFID Technology

Positioning tagged objects with low cost and high efficiency is one of fundamental constrains for large scale deployment of radio frequency identification (RFID) e.g. RFID in warehouse management. In RFID system, each product will have a tag and if the RFID system can not only tell whether the tag exists or not, but also get the position of it, which will be very useful for management.This paper presents a novel proximity method, RFID dynamic positioning method, using a moving Radio Frequency Identification (RFID) reader to accurately position the target based on reference tag arrays. The major advantage of the method is that through reading tags without any measurement data e.g. Time of Arrival (TOA), Received Signal Strength Indication (RSSI), it gives relatively accuracy of positioning target based on reference tags and moving reader. The algorithm is simple but practical. Based on the performance of the prototype system, it demonstrates the method we designed has the accurate result of positioning in one of the smallest reference tag cell (can be dozens of centimeters) and can be deployed easily with low cost, which has potential to be used in RFID warehouse management.