基于单片机的RFID读写器的软件设计.doc

广西科技大学（筹） 毕业设计（论文）说明书 课题名称 基于单片机的RFID读写器的软件设计 摘 要 射频识别（Radiofrequency identification ，RFID）,又称电子标签（E-Tag），是一种利用射频信号自动识别目标对象并获取相关信息的技术。随着RFID技术的进步，RFID应用范围日益扩大，现已涉及到人们日常生活的多个方面，并将成为未来信息社会建设的一项重要技术。因此，研究、设计和开发射频识别系统具有十分重要的理论意义和实际意义。 本文首先分析了射频识别系统的基本原理、研究方向和应用现状。在充分了解了射频识别系统的基本原理、技术特点、相关的国际标准后，进而提出了基于STC11F32XE单片机的射频识别读写器系统设计方案。设计采用MF RC522射频读写模块在STC11F32XE单片机的控制下实现对Mifare卡的读写访问等操作。 硬件部分设计主要包括单片机控制电路设计，射频读写模块设计，天线电路设计，串行通信接口电路设计，声音提示及显示电路设计等。本文主要讨论射频识别读写器的软件设计方法。软件设计包括单片机处理程序，射频收发芯片RC522的基本操作命令、Mifare卡操作程序设计、声音提示及显示部分程序等。论文中系统地叙述了利用软件实现读写器与Mifare卡之间通信所要求的请求应答、防冲撞、选卡、认证、读写等功能模块的实现原理。 关键词：射频识别，读写器，IC卡，STC11F32XE，MF RC522 Abstract Radio frequency identification (Radiofrequency identification, RFID), also known as electronic tags (e-Tag), a radio frequency signal to the automatic target recognition and access to relevant information technology. With the advances in RFID technology, RFID applications range widening, and now it comes to many aspects of daily life, and will become an important technology of the future information society. Therefore, the research, design and development of radio frequency identification system has very important theoretical and practical significance. This article first analyzes the basic principles of radio frequency identification technology, research and application status. Fully understand the basic principles of radio frequency identification system, the technical characteristics of the relevant international standards, and then proposed the design of radio frequency identification reader system based on STC11F32XE microcontroller. The design uses the MF RC522 RF reader module under the control of the STC11F32XE microcontroller to read and write access operations on the Mifare card. The hardware part of the design including the MCU control circuit design, radio frequency reader module design, the antenna circuit design, serial communication interface circui