基于单片机的IC卡读写器的设计.doc

摘 要 信息领域发展的一个分支——智能卡即IC（Integrated?Circuit）卡。本文介绍一种基于AT89C52单片机的射频IC卡读写器系统，该系统主要由AT89C52单片机、射频IC卡读写模块、天线及RS485通讯接口组成。 Abstract： A branch of?the field of information?developments is IC .This paper describes a radio frequency based on AT89C52 microcontroller IC card reader system, the system consists of AT89C52 microcontroller, RF IC card reader modules, antennas and RS485 communication interface.?Non-contact IC card, also known as IC card RF. In recent years developed a new technology, it will be the success of radio frequency identification technology and IC card technology together to solve the passive (passive card) and free access to this difficult problem, the field of electronic devices is a major breakthrough. Operation with fast, strong anti-interference, distance work, safe, easy, a multi-purpose card and so on, in the automatic toll collection, identification and electronic purse and other fields of contactless IC card can not match the superiority of have broad market prospects. Non-contact IC card reader non-contact IC card application system, one of the key equipment. In this paper, first non-contact IC card are summarized on the characteristics of the types of key technology. And introduced the non-contact IC card technology: radio frequency identification technology. Reader hardware design, including power supply circuit, LED status display circuit, buzzer driver circuit, RS232 communication circuit, MCU connection, MFRC500 reader antenna interface circuit and the design of these parts, as well as with the MCU interface circuit MFRC500 design, and Power Interface Circuit Design and RF antenna interface circuit design is in three parts. With RF technology promotion, IC card has been widely used in public transport terminals, handheld terminals, non-contact PC terminals and other non-contact communication applications. Keywords: Contactless IC Card；Read-Write DeviceMF-RC500；Radio Frequency Identification； 目