河南科技学院2009届本科毕业论文（设计）论文题目：智能化煤气表的设计学生姓名：卢子权所在院系：机电学院所学专业：应用电子技术教育导师姓名：洪新华邵锋完成时间：2009年5月20日摘要目前使用的机械式煤气表存在较大的弊端，给管理部门和用户带来了很大的不方便，为了能从根本上解决此问题，设计一种新型的智能煤气表收费系统就显得十分必要。针对这种情况，本文设计了智能IC卡煤气表系统，以实现煤气收费管理的电子化和信息化。本设计是基于AT89S52单片机控制的煤气计费模块，控制简单，设计中采用非接触式智能卡模块实现预付费功能，具有严谨的保护和防作弊功能；系统具备液晶显示功能，利用RT1602液晶显示模块显示余额、用气量等数据；为了保证系统的稳定性和可靠性，该设计中还加入了掉电保护模块，保护用户数据不丢失，使计费系统实现自动化和最优化。关键词：煤气表,非接触式卡,预付费,单片机TheDesignOfIntelligentGasMeterAbstractThemechanicalgasmeteratpresenthasabigdisadvantagestothemanagementandtheusersagreatdealofinconvenience.Inordertofundamentallysolvethisproblem,itisverynecessarytodesignanewtypesystemofintelligentgasmeter.Inviewofthissituation,thispaperdesignedanintelligentICcardgasmetersystemsinordertoachievethegastariffsandthemanagementofelectronicinformation.ThedesignisagasbillingmodulewhichbasedontheMCUAT89S52,thecontrolissimple,thedesigntakethenon-contactlesssmartcardmoduletoachievepre-paidfunctions,withhavestrictprotectionandanti-cheatfunctions.SystemusetheRT1602-liquidcrystaldisplayfunctiontoshowtheBalancedataetc.Inordertoensuresystemstabilityandreliability,thedesignalsojoinedthepower-downprotectionmoduletoprotecttheuserdataisnotlost,makethesystemenablesautomatedbillingsystemandoptimization.KeyWords:Gasmeter,Non-contactcard,Prepaid,Single-chip目录1绪论.................................................................................................................11.1国家宏观政策..........................................................................11.2国际上煤气表的发展及收费方式.................21.2.1国外煤气表的现状..............................................21.2.2收费方式..........................................................................21.3国内IC卡煤气表的发展..............................................31.4设计目的........................................................................................31.5设计中需要重点解决的问题...............................32整体设计方案.....................................................................................42.1系统组成........................................................................................42.2整体方案论述..........................................................................43单元电路...................................................................................................53.1主控电路MCU.................................................................................53.1.1主控芯片介绍............................................................53.1.2主控电路..........................................................................63.2流量测量模块..........................................................................73.3显示电路........................................................................................83.3.1RT1602介绍..........................................................................83.3.1.1RT1602引脚说明.................................................83.3.1.2RT1602指令说明.............................
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