Research On Application Of RFID Technology

RFID(Radio Frequency Identification) is an automatic identification technology, with which data can be duplex transported contactlessly between reader and tag. Because of its many advantages such as contactless, long working distance, suitable for bad environment, efficient recognizing ability, RFID is rapidly spreading in industry, commerce, and traffic transport management fields etc. Chinese government and enterprises have started to research RFID technology, and some RFID projects have been put in practice. The national standard drawing of RFID ISO 18000 has begined in September 2005. RFID technology is also adopted in our second generation identification card. Systems based on RFID such as container shipment, management of special equipments and gas bottles, object track in material circulation field have been developed in Shanghai. It is necessary to rapidly reach RFID technology with own intelligent property and compatible with international standard, for our country will need accounted to billions of RFID in near future.Based on above background, RFID technology, its development and application and situation of its standard will be firstly introduced in this paper. Secondly the author will research RFID's basic theory and working principle, including digital encoding, digital modulating, energy supplying for the tag from the reader, the data transmission between reader and tag, data integrity and security etc. A detailed discussion and study for the principle of RFID's application system is given in this paper.The author successfully designed a practicable RFID reader for the TN95P1311 tag. This tag is a passive tag, and its working frequency is 13.56 MHz. The reader can communicate with PC via the USB interface. The experiment indicates the reader is stabile, expanding and can be a reference model for the reader design.A detailed resolution is given for the project of 'The Sound RFID System for Medicine Inquiry and Management'. This is a portable equipment, can communicate with PC and its primary purpose is inquiry and management for medicine. In this system RFID technology is used for medicine recognizing and the audio technology is used for sound indication. The sample machine is simple, convenient and low cost. If the audio part and flash memory is improved, higher performance can be achieved and the system can be used for more application.Combing software with hardware is one feature of this paper. Combing theory with practice is another. The author's contribution is concluded as follows:1. According to the use and development situation of RFID technology, the author emphasized on the design method of RFID application system and gave a detailed discussion and research for it.2. The author designed a practicable RFID reader with USB interface for the TN95P1311 tag, also analyzed and summarized the experiment's result.3. A new design resolution for "The Sound RFID System for Medicine Inquiry and Management' is given in this paper. The RFID technology is applied in the field...