Application of RFID Technology for "Smart Locker Rooms" Project

In this paper the objects of research are RFID (Radio Frequency Identification) of the UHF (Ultra High Frequency) system of the frequency range, as well as individual components of such systems: RFID tags, RFID readers, antennas, software. We also consider the complex RFID system "Smart fitting rooms." Electrodynamic characteristics of RFID tags are considered in detail, as well as their changes under flexible deformations. In addition, the sample software for the recommendation system in Python version 3 using the cross-platform library Tkinter and SQLite database was developed. This system allows you to automatically determine the commodity unit located in the zone of the reader, as well as recommend additional relevant product. The purpose of the study is to determine the qualitative and quantitative changes in the electrodynamic parameters of the antennas of RFID tags during physical deformations, as well as to find solutions to eliminate negative changes. In the course of the work, the antenna parameters of the tag were identified, the changes of which lead to maximum changes in the stable identification of objects: radiation patterns, scattering matrix coefficients, standing wave voltage coefficient. The RFID tag and electrodynamic parameters were simulated in two states: the standard and curved position of the tag in space. The dependencies between flexible deformations of the antenna and electrodynamic parameters were revealed. All simulations were carried out using the NI AWR Design Environment 14 software. The results of the work can serve as a platform for further research and development of methodology for effective design of antennas for RFID tags.