Abstract:Bar code and RFID have become an important means of product identification in traceability system. Rapid conversion between different identifications plays a fundamental role in traceability link seamlessly. Based on identification feature analysis of the existing traceability systems, a bidirectional transformation equipment for traceable identification labels was designed and developed, which integrated industrial controller, RFID reader module, embedded barcode code printing module and barcode scanning module. The dynamic encryption technology was developed for the RFID to barcode conversion process, and the control flow procedure of RFID to barcode conversion was constructed. The hardware was implemented with the equipment function of label identification, bidirectional conversion, label printing and state monitoring. Two groups transformation test of RFID to 2D barcode and 2D barcode to RFID was divided. The frequency of RFID tag was 13.56MHz, and QR code was used as 2D barcode. Totally 16 combinations of each group were performed in terms of different conversion quantities and contents. The result showed that the conversion success rate was 100% in the process from RFID to 2D barcode and the conversion success rate had a downward trend with the increase of quantity and content in the process from barcode to RFID. The downward trend was caused by RFID capacity limitation or section matching. In the two kinds of conversion mode, the conversion consumption time was increased with the increase of quantity and content. The conversion time was mainly consumed in reading and printing procedure. The equipment can satisfy the requirement of label tracking and information recording in identification method transformation process.
