Design and Implementation of an Active RFID System for Fast Tag Collection

Radio frequency identification (RFID) technology is an automatic identification method using radio frequencies between RFID readers and tags. In RFID systems, tag collection is very important issue to collect data from all the tags in reader communication range using anticollision algorithm. There are several researches to develop the efficient anticollision algorithm, but they almost focus on passive RFID systems and show the simulation results. This paper focuses on tag collection in active RFID systems complying with ISO/IEC 18000-7 standard. We propose the modified tag collection algorithm based on the standard and develop an active RFID reader and tags which comply with ISO/IEC 18000-7 and utilize the modified algorithm. As the experiments are achieved with a reader and 30 tags in the real-world environment, the modified algorithm shows better performance of tag collection than the standard algorithm in our active RFID system.