摘要自动售货机是近些年来兴起的一种通过FPGA或者单片机等硬件支持的智能设备。它广泛的应用于商场，公寓，火车汽车站等人流较密集且购物需求大的地方。自动售货机通过硬件支持，通过以编写好的程序自动出货自动找零，但货物一旦售罄就需人为去补充。人们生活水平不断提高，对自动售货机的需求量就越大，所以对它的研究和完善具有重要的商业价值。传统的售货机只能用现金支付，随着近些年的发展移动终端支付方式越来越受欢迎。一些售货机也开始拓展移动支付的功能，极大地满足了人们的需要，给他们提供了许许多多的便利。同时，移动支付功能也克服了现金支付找零会存在的一些问题。本课题主要是研究一款基于89C51单片机的自动售货机，并实现自由选货、出货、收钱、找零等功能。本文介绍了单片机的选型、总的设计框架、软件仿真、硬件电路的实现等各个模块。关键词：自动售货机；单片机；编译仿真AbstractVendingmachinesarethekindofintelligentdevicesthathavebeensupportedbyhardwaresuchasFPGAsormicrocontrollersinrecentyears.Itiswidelyusedinshoppingmalls,apartments,busstationsandothercrowdedandshoppingneedsoflargeplaces.Automaticvendingmachinethroughhardwaresupport,throughthepreparationofagoodprogramautomaticallysenttoautomaticallychangethezero,butthegoodsoncesoldouttobeaddedtothepeople.People'slivingstandardscontinuetoimprove,thedemandforvendingmachinesisgreater,soitsresearchandimprovementhasimportantcommercialvalue.Traditionalvendingmachinescanonlybepaidincash,withthedevelopmentofmobileterminalsinrecentyears,moreandmorepopularwaytopay.Somevendingmachineshavebeguntoexpandthefunctionofmobilepayment,greatlytomeettheneedsofpeople,toprovidethemwithalotofconvenience.Atthesametime,themobilepaymentfunctionalsoovercomessomeoftheproblemsthatcashpaymentswillhave.Thistopicismainlytostudya89C51single-chipvendingmachines,andtoachievefreeselectionofgoods,shipping,money,changeandotherfunctions.Thisarticledescribesthesingle-chipselection,theoveralldesignframework,softwaresimulation,hardwarecircuitimplementationandothermodules.Keywords：automaticvendingmachine；80C51MCU；compiledsimulation目录1.引言...............................................11.1历史及研究意义........................................11.2现状及发展趋势........................................21.3研究的主要内容........................................32自动售货机的系统结构..................................32.1系统概述..............................................32.1.1工作原理............................................42.1.2控制子系统概述..................................42.2功能简介..............................................42.2.1功能概述............................................42.2.2设计思路........................................53.硬件设计..............................................53.180C51的基本概述.....................................103.2LCD1602的基本概述...................................133.3矩阵键盘的基本概述...................................133.4货币识别模块.........................................143.4.1硬币的识别.........................................143.4.2纸币的识别.........................................143.5货物选择模块.........................................163.6出货退币模块.........................................174软件流程图设计........................................184.1商品选择流程图.......................................204.2投币系统流程图.......................................204.3出货找零系统流程图...................................205.软件仿真..........
