摘 要：本文主要讲解了刷卡门禁系统，包括它的硬件和代码的编译。罗列出产品电路原理图，产品总体框架的构思与系统代码。继电器电路和报警电路。读卡器部分来讲，最为重要的部分是处于核心位置的控制器单元，其次应为与IC卡能够进行通信传输的射频天线。为了使得读卡器能够正常工作即识别MIFARE非接触式射频卡，荷兰Philips公司研究出了最新的IC卡。只要执行刷卡操作时，读卡器经过一系列的识别确认就可以确认持卡者能否有资格进入，同时液晶1602将展示相关IC卡的序列号。除了硬件方面所讲的上述内容，对于软件方面要能够使元器件完成实现寻卡，辨别卡片真伪性操作。
STC89C51单片机能够成为读卡器的主要控制中心，原因就是因为里面存在一个8K字节Flash存储器，无一例外地系统则全部依据SPI通信，主要是因为其较于其他设备而言接口处管脚数量较少、连线也不用过于复杂繁琐，较大程度优化读卡器的大小等诸多优点。
该论文有图12幅，表2个，参考文献14篇。
关键词：门禁系统 LCD1602 STC89C51 IC卡
Design Of Access Control System Based On 51 Single Chip Computer RFID
Abstract：This article provides us with a detailed introduction to the access control system for credit cards, including its hardware and code compilation .In the card reader part, the most important part is the controller unit in the core position, followed by the radio frequency antenna which can communicate with the IC card.Design of Mifare Non-connection by Philips Company in the Netherlands The touch RF card can be read by the card reader.As long as the operation of swipe card is carried out,The card reader can confirm whether the card holder is eligible to enter through a series of identification confirmation, and the LCD 1602 will display the serial number of the relevant IC card. In addition to the hardware mentioned above, for software, components should be able to complete card searching, card identification operation. .
STC89C51 Microcontroller can become the main control center of the card reader, because there is an 8k byte flash memory inside, without exception, the system is all based on SPI communication. This is mainly due to the fact that the number of pins in the interface is less than that of other devices, the connection is not too complicated and the size of the card reader is greatly optimized, and so on.
Key Words:Access Control System LCD1602 STC89C51 IC Card
目录
摘要 I
Abstract II
目录 III
图清单 V
表清单 V
1 绪论 1
1.1门禁系统概括 1
1.2课题背景及意义 3
2系统结构与设计原则 4
2.1门禁读卡器 4
2.2非接触式的IC卡 4
2.3智能门禁系统的设计原则 5
2.4门禁系统实现功能 5
2.5门禁系统总体框架 6
3系统硬件电路设计 7
3.1模块中的硬件介绍 7
3.2 STC89C51硬件连接 9
3.3 USB供电接口 9
3.4 液晶显示屏各项功能的实现 51单片机RFID门禁系统的设计:http://www.chuibin.com/zidonghua/lunwen_206206.html