Research On Application Technologies Of RFID System Based On Embedded Ethernet

As a contactless automatic identification technology, radio frequency identification (RFID) is used for a wide variety of applications ranging from logistics to Manufacturing and public information service, etc. And the network of embedded system has already become an important characteristic of the post-PC era. Therefore, the academic research about RFID and embedded Ethernet has become a hot topic.Because of cost restraint and the lack of application model in our country, there is a big gap in RFID extension compared with foreign countries. This paper focuses on the research of the RFID system, which proves that 2nd-Generation ID Card can be used instead of the traditional read-only card to cut the cost of RFID tag through identifying the global exclusive sequence number (UID) in 2nd-Generation ID Card; and at the same time, the application model for RFID system in local area network, with 2nd-Generation ID Card as a carrier, is supplied with Embedded Ethernet technology.Firstly, the paper gives a detailed analysis of the application state and some basic manipulative principles related to both RFID and embedded Ethernet. Secondly, 2nd-Generation ID Card Reader device based on Embedded Ethernet is designed. The tag reader device is divided into two parts, the reader module hardware-middleware and the main control system with Ethernet Communication Function. Designed as standard 40-pin DIP footprint, the reader module hardware-middleware is programmed not only to implement read operation with RFID tag but also to provide communication interface. It is convenient that the RFID application developer can obtain the information of the RFID tag by the communication interface without considering the details of RFID. A single chip solution for Ethernet connectivity is implemented in the main control system with MC9S12NE64. On the Ethernet driver, a simplified embedded TCP/IP stack is designed for the embedded systems without operating system. Lastly, the application methods and occasions of RFID system based on embedded Ethernet are given via case analysis.The result of this research provides some valuable references for the embedded Ethernet application, the upgrade of the traditional read-only card system and the extension of 2nd-Generation ID Card.