The Research And System Design Of RFID Technology Based On The Application Of Drug Selection

The system of drug selection is optimizing the acceptance, storage, sorting, and distribution processes of the links on drug supply, marketing and distribution, this can improve order processing ability, reduce errors in the sorting of good, shorten inventory and delivery time, reduce the flow of costs, and realize the automation, information and efficiency of medicine logistics, improve service levels and efficiency of using funds. This topic is using RFID technology to design the system, Radio frequency identification(RFID)system is a new technology of automatic identification. It uses a lot of technologiessuch as IC, antenna, wireless transceiver, data coding and electromagnetic, and it has the advantages of convenient operation, mass storage, confidentiality, quick response, and strong adaptability to the environment. Among them,13.56MHz RFID system has longer reading distance and faster processing speed, etc. Nowadays, it has become a hot spot in RFID products. So, research and design RFID system is very significative in theoretic and practice.According to the corresponding standards, the reader system for the 13.56MHz frequency was researched and analysed on the foundation of a detailed explain on the relative theory and technology for RFID system, and most of the efforts distributed on the key technologies of RFID system. On this basis, a method of RFID reader on ISO15693 agreement was proposed to meet the actual requirements of design, and the paper has finished the research of the RFID reader based on ISO15693 protocol. The main jobs of the wok are described below:At first, basic theories, research way and the application of RFID technology are analyzed in this thesis. Based on plenty researched on basic theories, characteristic technology and international standard of RF card, an RF card reader design model which is based on STC89C54 MCU and Philips IC reader CLRC632 is developed. The design use CLRC632 which is controlled by STC89C54 MCU realized to read and write RF card.Secondly, his thesis expatiate the design of RF IC card Reader circuitry, involves power circuitry design, STC89C54 MCU circuitry design, CLRC632 circuitry design, the thesis, the tune, the optimizing of the antenna in detail and RS-232 serial and superordination machine communication section design.Finally, discuss the communications principle andmethod between the RF card reader and the RF card. Then expatiate the RF card reader's software design, involves initialization Request/Answer, Anti-collision, Select Tag, Authentication, Read and Write function.The features of the system include small size, low cost, high reliability and longer communication distance. Introduced the unresolved question and the scheme of the RF card reader system at the end.