Reader circuit for periodically interrogating RFID transponders

摘要

RFID reading/interrogation device has a transmitter and a receiver connected to a memory unit through a data processing circuit (38) for reading data, about preservation condition of a product, delivered from a RFID tag. The circuit ensures periodic interrogation and storage of the data in the memory unit at the rate of a clock signal to determine the condition in real time. A display unit (40) displays the information about the product and condition. An independent claim is also included for a container containing products and the above RFID reading/interrogation device.