【正文】 要的戰(zhàn)略措施。 課題背景及意義 .................................................................................................. 1 傳統(tǒng)水表 ............................................................................................................. 2 傳統(tǒng)水表的主要結(jié)構(gòu) ............................................................................... 3 傳統(tǒng)水表的主要特點(diǎn) ............................................................................... 3 智能水表 ............................................................................................................. 4 V 智能水表的特點(diǎn) ....................................................................................... 4 國內(nèi)外智能水表的發(fā)展現(xiàn)狀及發(fā)展趨勢(shì) ............................................... 6 第 2 章 智能水表的組成和單片機(jī)的選擇 ..................................................................... 9 智能水表系統(tǒng)硬件組成 ...................................................................................... 9 AT89C51 單片機(jī)簡介 ....................................................................................... 10 89C51 單片機(jī)的基本組成 ...................................................................... 10 89C51 單片機(jī)引腳及其功能 .................................................................. 10 第 3 章 系統(tǒng)各模塊硬件電路設(shè)計(jì) ............................................................................... 13 IC 卡讀寫電路 ................................................................................................... 13 Mifare 1 射頻 IC 卡 ................................................................................. 13 H6152 讀寫模塊 ...................................................................................... 17 IC 卡讀寫電路的原理及說明 ................................................................. 18 液晶顯示電路 ................................................................................................... 22 液晶顯示模塊 ......................................................................................... 22 電源模塊 ................................................................................................. 25 單片機(jī)模塊 ............................................................................................. 27 記憶單元電路 ................................................................................................... 28 I2C 總線簡介 ........................................................................................... 28 AT24C01 簡介 ......................................................................................... 30 硬件原理圖 ............................................................................................. 31 電磁閥控制電路 ............................................................................................... 32 VI 其它模塊電路 ................................................................................................... 33 第 4 章 系統(tǒng)各模塊軟件設(shè)計(jì) ....................................................................................... 35 IC 卡讀寫軟件設(shè)計(jì) ........................................................................................... 35 H6152 內(nèi)部寄存器 .................................................................................. 35 H6152 通信協(xié)議與控制命令 .................................................................. 38 IC 卡讀寫電路程序流程圖及部分程序 ................................................. 43 液晶顯示電路軟件設(shè)計(jì) ................................................................................... 45 液晶控制驅(qū)動(dòng)器指令集 .......................................................................... 45 程序流程圖及部分程序 .......................................................................... 47 記憶單元電路軟件設(shè)計(jì) ................................................................................... 49 第 5 章 結(jié)論 ................................................................................................................... 51 參考文獻(xiàn) ......................................................................................................................... 52 謝 辭 ............................................................................................................................. 54 附錄：電路圖 ................................................................................................................. 55 VII 1 第 1 章 緒論 課題背景及意義 隨著社會(huì)科學(xué)技術(shù)的高速發(fā)展，資源短缺現(xiàn)象日益嚴(yán)重，尤其是與人類生存嘻嘻相關(guān)的水資源。 Liquid crystal display。 Design of the Water Meter IC Card System Based On Singchip Abstract In order to adapt the reform of the nation system of water supply,studying and making use of the modern intelligence technique to realize the automatic supervision of the water supply,lightening the funds pressure because of“supply water first behind charge”of the department supplying water,reducing the trouble and dispute of copying III the form and charging monthly,using the modern science technique change the current administration structure of using water and water supply industry is imperative under the application of intelligent water meter not only improves work efficiency of intelligent water meter not only improves work efficiency of the department supplying water and realizes using water electronically but also creates a condition for using water frugally and of these charactetistics,intelligent water meter obtained more and more widespread application. In this paper, the main design based on singlechip precharges the IC card water meter system hardware circuit design, its main function is based on AT89C51 singlechip microputer as the core, the realization of IC card reader, LCD display control, the control solenoid valve, pulse extraction, at the same time security protection circuit, memory cell circuit, munication interface circuit, the signal meter to plete the reading, writing and processing, monitoring the work function of water meters. In this paper, one by one for each module studied. Full det