A chamber for stocktaking of courier parcels in a dense environment

The article describes the course of research of a R&D project to develop a chamber for the separation of reading a UHF RFID multiple tags in a dense environment. The necessity to apply the developed solution resulted from the operational conditions of the national postal operator in Poland (Poczta Polska SA). During the pilot implementation of the UHF RFID system on the gates of distribution centers, it was found that in order to identify the inhomogeneous content of pallet loading units, containing up to 200 different packages of unknown content, it will be necessary to build a solution that allows the use of the maximum radiation power of the reader with simultaneous radio separation from the environment. At the same time, the developed solution uses the phenomenon of electromagnetic wave reflections, generated by the metal housing of the scanning chamber, to eliminate dead areas and the adverse interaction of a significant number of tags contained in the collective packaging. The developed solution made it possible to obtain basically 100% efficiency of reading the tagged parcels with the simultaneous full automation of the inventory process.