【正文】 沈陽理工大學學士學位論文 II 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, 39。設計結果表明，此系統(tǒng)設計容易，結構簡單，造價低廉，維修方便。鍵盤采用 矩陣 鍵盤模塊，輸入方便。 本 次 設計的 智能 IC 卡水表 系統(tǒng)利用單片機 AT89C51 作 為主要芯片 ， 完成了充值、扣費、復位等功能。沈陽理工大學學士學位論文 I 基于單片機的 IC卡水表的設計 摘 要 智能 IC 卡水表是一種集計量功能和控制功能為一體的水量計量裝置，是一種利用現(xiàn)代微電子技術、現(xiàn)代傳感技術、對用水量進行計量并能進行用水數(shù)據(jù)傳遞及結算交易的新型水表。該水表的研發(fā)從根本上改變了自來水公司傳統(tǒng)的工作方式，形成了先買卡充值再用水的服務模式，有效的避免了水費的流失、為降低自來水公司經(jīng)營成本提供了先進的管理手段，解決了長期困擾供水行業(yè)的水費拖欠問題，更重要的是使公民的用水觀念和供水部門的管理方式發(fā)生了根本改變。顯示部分采用 LCD12864 液晶顯示器，能夠支持漢字和數(shù)字輸出，簡單明了。 IC 卡采用了西門子公司的 SLE4442 邏輯加密卡。 本文詳細介紹了系統(tǒng)的整體原理，分析了系統(tǒng)的硬件及軟件設計，并制作了實物。(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 pany 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 pany operating cost, solve the problem of arrears of longterm 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 microputer AT89C51 plete 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 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: microputer； IC card； Intelligent water meter 沈陽理工大學學士學位論文 III 目 錄 1 緒論 ...................................................................................................................................... 1 課題背景 .................................................................................................................... 1 傳統(tǒng)水表 .................................................................................................................... 1 傳統(tǒng)水表的主要結構 ...................................................................................... 1 傳統(tǒng)水表的主要特點 ...................................................................................... 1 智能 IC 卡水表 .......................................................................................................... 2 智能 IC 卡水表的主要特點 ............................................................................ 2 IC 卡的發(fā)展歷史 ....................................................................................................... 3 研究內容 .................................................................................................................... 3 2 IC 卡水表的整體設計 ......................................................................................................... 5 系統(tǒng)的功能說明 ........................................................................................................ 5 系統(tǒng)總體方案設計 .................................................................................................... 5 IC 卡選擇 ......................................................................................................... 6 鍵盤選擇 .......................................................................................................... 7 顯示器的選擇 .................................................................................................. 7 3 系統(tǒng)各模塊硬件電路設計 .................................................................................................. 9 Protel電路原理圖設計軟件 ...................................................................................... 9 單片機部分 .............................................................................................................. 12 單片機 AT89C51 介紹 ................................................................................... 12 AT89C51 主要管腳介紹 ................................................................................ 13 芯片擦除 ........................................................................................................ 14 時鐘電路和復位電路 .............................................................................................. 15 LCD12864 液晶顯示電路 ....................................................................................... 16 SLE4442IC 卡部分 .................................................................................................. 17 SLE4442IC 卡 的主要指標 ............................................................................ 17 鍵盤設計 .................................................................................................................. 18 報警電路 .................................................................................................................. 19 4 軟件設計 ............................................................................................................................ 20 主程序設計 .............................................................................................................. 20 沈陽理工大學學士學位論文 IV 子程序流程圖 .......................................................................................................... 21 充值程序流程圖 ............................................................................................ 21 用水扣費程序流程圖 .................................................................................... 22 5 編程與系統(tǒng)調試 ...............................................................................................