毕业设计（论文）：基于AT89C51单片机的智能水表设计.doc

摘要 单片机自世纪70年代问世以来，以其极高的性能价格比，受到人们的重视和关注，应用很广、发展很快。而51单片机是各单片机中最为典型和最有代表性的一种。 Abstract Because of its extremely high performance-price ratio, the single-chip computer (SCC) has been paid great attention to ever since it came out in 1970s of 20th Century, and has gained an extensive applicable field and fast development. Among all kinds of SCCs, 51 SCC is the most typical and representative one. More and more probelems are arising on the management and record-reading of water meter,electricity meter,and natural gas mater systems as the community development is growing fast.Aiming to slove these problems,the thesis designed a remote central meter reading system and intelligent water system, development of intelligent resident community and the high demand of one meter per family project.This intelligent water mater will collect the data and transfer it to the remote upper-level managing system via concentrator and upper-level management system,while the upper-level management system is responsible for monitoring and managing intelligent water meter network. In this paper, AT89C51 SCM as a master chip, the development of IC card technology based on the intelligent meter. The intelligent meter can realize the accumulated water, water, statistics, computing and management of water (the amount of alarm, basic water, the water plan), and valve control functions. At the same time with stored water and delinquent tips, delinquent water, and other functions. KEY WORDS: Intelligent water meter AT89C51 IC card technology 摘要 I 第一章 绪论 1 1 .1 研究背景 1 1.2选题意义 和经济效益 2 1.2.1远程集中抄表系统及智能网络水表的推广应用前景 2 1.2.2社会效益 2 1.2.3设计的技术指标 3 1.2.4 采用的控制芯片 3 1.2.5采用的抄表方式 3 1.3智能水表市场 5 1.4智能卡表的安全性内容 6 1.4.1智能卡表及系统数据存储的安全性分析 7 1.4.2智能卡表及系统数据交换的安全性分析 9 1 .5论文的主要内容 11 第二章 整体设计与PROTELL简介 12 2.1远程集中抄表系统的总体概述 12 2.2远程集中抄表系统整体结构 12 2.2.1上位机管理系统 13 2.2.2集中器 13 2.2.3智能网络水表 13 2.3设计方案论证 14 2.3.1传输抄表方式 14 2.4 protel电气原理图设计软件 15 2.4.1 protel电路板设计软件 16 2.4.2 原理图的绘制 16 2.4.3 PCB图的绘制 17 第三章 智能水表的硬件设计 20 3.1系统