本科毕业设计-基于单片机的ic卡水表的设计.doc

基于单片机的IC卡水表的设计 摘 要 智能IC卡水表是一种集计量功能和控制功能为一体的水量计量装置，是一种利用现代微电子技术、现代传感技术、对用水量进行计量并能进行用水数据传递及结算交易的新型水表。该水表的研发从根本上改变了自来水公司传统的工作方式，形成了先买卡充值再用水的服务模式，有效的避免了水费的流失、为降低自来水公司经营成本提供了先进的管理手段，解决了长期困扰供水行业的水费拖欠问题，更重要的是使公民的用水观念和供水部门的管理方式发生了根本改变。 本次设计的智能IC卡水表系统利用单片机AT89C51作为主要芯片，完成了充值、扣费、复位等功能。显示部分采用LCD12864液晶显示器，能够支持汉字和数字输出，简单明了。键盘采用矩阵键盘模块，输入方便。IC卡采用了西门子公司的SLE4442逻辑加密卡。设计结果表明，此系统设计容易，结构简单，造价低廉，维修方便。本文详细介绍了系统的整体原理，分析了系统的硬件及软件设计，并制作了实物。 关键词：单片机；IC卡；智能水表 Abstract The intelligent IC card water meter is a kind of water metering measuring function and control functions of the device, is the use of modern microelectronic technology, modern sensor technology, (new water meter card technology of the water metering and can use data transfer and settlement of transactions. Research and development of the water change water company the traditional working way fundamentally, formed the card to buy water service mode, in order to avoid water loss, provides advanced management method to reduce the water company operating cost, solve the problem of arrears of long-term problems in water supply industry water, more important is to make a fundamental change in the concept of water use and water supply departments of civil management. The design of the intelligent IC card water meter system using single chip microcomputer AT89C51 complete recharge, fee deduction, reset functions. The display part using LCD12864 liquid crystal display, can support Chinese characters and the digital output, simple and clear. The keyboard using matrix keyboard input module, convenient. IC card using SLE4442 logic encryption card Siemens ltd.Results show that, this system is easy to design, simple structure, low cost, convenient repair. This paper introduces the principle of the whole system, discusses the hardware and software design of the system and create the physical. Key words: microcomputer；IC card；Intelligent water meter 目 录 1 绪论 1 1.1 课题背景 1 1.2 传统水表 1 1.2.1 传统水表的主要结构 1 1.2.2 传统水表