《基于RFID的手持式安全巡检终端硬件设计-论文》由会员分享，可在线阅读，更多相关《基于RFID的手持式安全巡检终端硬件设计-论文（32页珍藏版）》请在金锄头文库上搜索。
1、摘 要无线射频识别技术是从二十世纪末迅速崛起的一项通过无线射频信号进行非接触式双向数据通信的自动识别技术。它是利用射频信号收发的空间耦合原理和无线传输的特性，自动识别静止或移动的目标对象并获取相关信息数据的无线通信技术。因其识别工作无须人工干预，可工作于各种恶劣环境，且不局限于视线,识别距离远，传输速率快，同时具有难以伪造和智能性较高等优点而得到社会各领域的广泛使用。随着科技的不断进步，无线射频识别技术得到了极快的发展，产品种类日益丰富，应用也越来越广泛，已涉及到人们日常生活的各个方面。而手持终端也应运而生，它让人们不再局限于固定的地点，可以随时随地的进行数据的记录和传输。而随着该领域科技的不
2、断发展，手持终端不再像以前一样因为电路的繁多而显得庞大。如今手持终端的大部分电路都可以集成在一块小小的芯片当中，使得手持终端变得小型化携带方便，并且功能还更加的多样。论文在查阅了大量文献及网络资料的基础上，详细的分析了RFID手持终端的工作原理。经过详细的比对与挑选，最终确定了硬件芯片的挑选。并且给出了整个硬件系统的结构图框图，然后根据结构图设计并完善如RFID模块的收发电路，主控芯片的显示电键盘电路、通信接口等外围电路。关键词关键词：超高频射频识别技术；手持终端；单片机；射频芯片AbstractRadio frequency identification technology is from
3、 the end of twentieth Century the rapid rise of a radio frequency signal through the non-contact automatic identification technology bidirectional data communication. It is characteristic of spatial coupling principle and wireless transmission by radio frequency signal receiving and transmitting, au
4、tomatic recognition of stationary or moving targets and obtain relevant information and data wireless communication technology. Identify the work without human intervention, it can work in various environments, the system is not limited to line-of-sight, long identification distance, faster transmis
5、sion rate, at the same time is difficult to forge and intelligence of the advantages of widely used in all areas of society. With the progress of science and technology, radio frequency identification technology has been rapid development, product types is becoming richer, and more extensive applica
6、tion, has been involved in all aspects of daily life. While the handheld terminal also emerge as the times require, it makes people no longer limited to fixed locations, can whenever and wherever possible the data recording and transmission. Along with the development of the field of science and tec
7、hnology, the handheld terminal is no longer the same as before because the circuit many and look big. Based on lots of literatures and network, a detailed analysis of the working principle of the RFID handheld terminal. After detailed comparison and selection, and ultimately determine the hardware c
8、hip select. And the whole hardware system structure frame chart is given, then according to the structure design and perfect as the transceiver circuit of RFID module, display electric keyboard circuit, communication interface circuit of the main control chip. Key Word：UHF RFID;Handheld Terminal;ARM
9、;Radio frequency chip i目目 录录摘要摘要ABSTRACT第一章第一章 绪论绪论.11.1 课题背景及意义.11.2 国内外研究现状.11.3 RFID 的应用和发展.21.3.1 RFID 的应用领域.21.3.2 RFID 的发展趋势.31.4 研究的主要内容.4第二章第二章 系统总体设计系统总体设计.52.1 系统结构.52.2 硬件的结构.52.3 主控模块硬件选型.62.3.1 LPC1765 微控制器简介.62.3.2 LPC1765 的引脚信号.82.4 RFID 模块的硬件选型.102.4.1 基带芯片 AT91SAM7S256 简介.102.4.2 AT91SAM7S256 引脚信号.122.4.3 INDY R500 射频芯片简介.142.4.4 INDY R500 引脚信号.14第三章第三章 主控模块电路设计主控模块电路设计.173.1 电源电路.173.2 复位和调试电路.173.3 时钟电路.183.4 串行通信接口电路.193.5 键盘电路.213.6 显示电路.
