非接触式IC卡读卡器设计2.doc

摘 要 非接触式IC卡是IC卡领域的一项新兴技术，它是射频识别技术和IC卡技术相结合的产物。由于非接触式IC卡具有操作快捷、抗干扰性强、工作距离远、安全性高、便于“一卡多用”等特点，在自动收费、身份识别和电子钱包等领域具有接触式IC卡所无法比拟的优越性具有广阔的市场前景。非接触式IC卡读卡器是非接触式IC卡应用系统的关键设备之一。本论文开发了一种读写距离为25MM的非接触式IC卡读卡器。本文首先对非接触式IC卡进行了概述，介绍了其特点、种类、国际标准、关键技术、典型应用和发展趋势；随后介绍了非接触式IC卡技术的基础：射频识别（RFID）技术，并对目前国际上具有代表性的两大非接触式IC卡技术：LEGIC技术和MIFARE技术进行了对比；紧接着重点介绍了Philips公司的MIFARE技术，对MIFARE卡片和MIFARE非接触式IC卡的读写组件MFRC500进行了全面的阐述；在此基础上，论文详细地阐述了非接触式IC卡读卡器的硬件和软件设计，给出了每一部分的实际电路图和应用程序。读卡器的硬件设计包括电源供应电路、蜂鸣器驱动电路、RS232通信电路、MCU的连接、MFRC500接口电路和读卡器天线这几部分的设计,MFRC500接口电路的设计分为MFRC500与MCU接口电路设计、与电源接口电路设计和与天线射频接口电路设计三个部分。论文介绍了电路的详细设计过程。软件设计分为对MFRC500的应用程序的设计、对读卡器其他电路的应用程序设计和主程序设计三个部分，每一部分都给出了具体程序并对程序进行了详细的说明。 关键词：IC卡、非接触、射频识别、读卡器 ABSTRACT Contactless IC Card is one kind of new technology in the field of IC card,which is the combination of RF technology and IC card Technology.Because contactless IC card has some advantages over common IC card such as its high working speed、good anticollsion quality、long，working distance,there will be a good prospect for it in many fields such as automatic pricing、identity distinguishing、electric wallet,and so on.The contactless IC card reader is one of the key devices of a contactless IC card system.We developed one kind of contactless IC card reader,which is one part of a project and has about 25mm working distance. At first this paper generally introduces the contactless IC card,including its feature、type、international standard、key technology、typical usage and developing trendency.Then it introduces the RFID technology,from which the contactless IC card technology derived,andgives the compare of LEGIC technology and MIFARE technology,which are the representative technologies of contactless IC card technology at present.After that the MIFARE technology developed by PHILIPS Semiconductors is introduced in detail.The paper give emphasis to the introduction of MIFARE contactless IC card and the reader component,MFRC500.Based on these,the paper discusses the design of the contactless IC car