RFID tag identification method for preventing the collision RFID tag, RFID reader and the RFID tag using the same.

摘要

Method for recognizing a plurality of RFID tags in the RFID reader, the error detection code from the RFID tag receives the to create a query (Query) command and the step of transmitting to the RFID tag in the ready state, the query (Query) Command receiving, when receiving no conflicts the first error detection code, the acknowledgment (ACK) by generating a command and transmitting to the RFID tag transmits the error detection code, the protocol of the RFID tag transmits the error detection code It includes receiving a tag information including a control (control Protocol) and electronic product code (electronic product code, EPC). It is possible to improve the conventional EPCglobal Class1 Generation2 RN16 and RN16 tag recognition rate by using the code for error detection such as CRC-16 having uniform characteristics, such as random instead of the standard to be used in. ; RFIF, tag collision, conflict prevention, CRC