带串口非接触式读卡器的设计

通信工程论文编号:TX308  论文字数:9440,页数:30

目录
摘要 I
Abstract II
第一章 绪论 1
 1.1 背景 1
 1.2 研究内容 1
第二章 系统分析 3
 2.1 射频卡 3
 2.1.1 MF1卡的存储结构 4
 2.2 读卡器 6
 2.3系统的工作原理和安全性 8
 2.31系统工作过程 8
 2.32系统安全性 9
第三章 硬件设计 10
 3.1 天线设计 10
 3.2 读卡器与单片机的接口设计 11
 3.3 单片机与PC机的通信 12
第四章 软件设计 13
 4.1 编程思想 13
 4.2 子程序设计 13
 4.2.1 询卡请求 14
 4.2.2 防冲突 15
 4.2.3 选卡 15
 4.2.4 密码认证 16
 4.2.5 读写卡 18
 4.3 与PC机通信协议设计 18
 4.3.1发卡器通讯协议 18
 4.3.2读卡器通讯协议 20
结论 21
致谢 22
参考文献 23
附录A读卡器电路图 24
附录B发卡器主程序 25

摘要

   信息技术的发展给生产和生活带来巨大的变革，非接触式射频IC卡的普及和广泛应用也是其中的表现之一。非接触式IC卡没有机械触点，通过无线方式与读写设备进行通讯，与接触式IC卡相比具有操作快捷、抗干扰性高、可靠性高、安全性好、便于“一卡多用”、多种工作距离等特点，深受用户的好评和欢迎，具有广阔的市场前景。
 基于实际应用项目的需要，本课题开发了一种读写距离小于10mm的非接触式IC卡读卡器。本文将从非接触射频读卡器系统的开发应用角度，阐述IC卡的组成及其工作原理、射频卡读卡器的工作原理、天线的设计、单片机对读卡器的程序控制、读卡器系统与PC机的通信。
 
关键词：非接触式射频卡，FM1702，串口

Abstract
 
 The development of information technology brings a huge transformation for the production and daily life. The popularity and widespread application of the contactless radio frequency IC card is also one expression of the information technologies. The contactless IC card owns favorable comment and welcome from users and has broad market prospects, for having no mechanical electronic contact, carrying on the communication with the read-write equipment through the wireless way. Compared with the contact IC card, it has many characteristics, such as fast operation, anti-jamming, high reliability, fine security, easy to a card with multipurpose， handling with work distance and so on.    Basing on the actual need of the project, this subject has developed one kind of read-write distance which is smaller than 10mm contactless IC card RWD. From the angle of the application of developing contactless radio frequency RWD system, this paper will elaborate the IC card composition and the principle of work, the radio frequency RWD principle of work, antenna's design, the programmed control, the RWD system and the PC correspondence.
 
Key words: contactless radio frequency cards, FM1702, serial port