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智能密码锁语音留言门铃的设计I智能密码锁语音留言门铃的设计摘要当今市场上智能化楼房的不断升温，智能化的防盗语音门铃系统已经作为智能化办公室和智能化住宅小区的一个重要组成部分，逐渐备受用户的欢迎。传统的主流门锁其保密性不强，钥匙容易被仿制和意外丢失，结构较简单，被撬可能性极高。而门铃作为日常生活中较常见且已经普遍被使用的产品，门铃也越来越多样化，如今简单的叮咚门铃或音乐门铃已不足以满足当今的用户。基于这种现状，提出设计一款集增强防盗能力的电子密码锁和语音留言功能门铃于一身的智能化系统。将两者功能结合起来，真正进一步实现系统的人性化、智能化。本设计针对传统门锁和普通门铃的不足，设计一款电子密码锁功能和智能语音留言功能结合的门铃。本系统具有开关锁和报警功能的电子密码锁，LCD显示提示，以及响铃和外机按键等功能。其中设计的中心系统由AT89C51单片机完成的，主要硬件电路有单片机，复位电路、选择按键输入电路、储存电路、音频发生器、音频放大器、扬声器、1602LCD显示电路以及ISD1820语音电路。实现更智能化，人性化的设计，满足人类各种需要。关键词：密码锁；门铃；AT89C51；智能化智能密码锁语音留言门铃的设计IITheDesignoftheIntelligentPasswordLockVoiceDoorbellABSTRACTRisingintelligentbuildingsonthemarkettoday,anti-theftintelligentspeechdoorbellsystemhasbeenasanimportantpartofintelligentofficeandintelligentcommunity,graduallyattractsusers.Thetraditionalmainstreamlockstheconfidentialityisnotstrong,easytobeimitatedandaccidentallylostkeys,simplestructure,brokenpossibility.Thedoorbelliscommonly.Seenindailylifeandhasbeenwidelyusedproducts,thedoorbellisalsoincreasinglydiversified,nowsimplyaDingDongdoorbellormusicdoorbellhasbeeninsufficienttomeettoday‘susers.Basedonthissituation.Theintelligentsystemdesignofasetofenhancedelectroniccipheranti-theftlockandtheabilityofavoicemessageinabodyofthedoorbell.Thetwofunctionstogether,reallyachievefurtherhumanization,intelligentsystem.Thedeficiencyoftraditionaldesignaimingatthedoorlockandordinarydoorbell,adesignofelectronicpasswordlockfunctionandintelligentvoicemessagefunctioncombiningthedoorbell..Thissystemhasanelectronicpasswordlockandalarmlock,LCDdisplay,andtheringandoutsidethemachinekeyfunctions.ThecenterssysemdesigniscompletedbyAT89C51microcontroller,themainhardwarecircuitwithMCU,resetcircuit,theselectbuttoninputcircuit,storageciruit,audiofrequencygenerator,audioamplifier,speakers,1602LCDdisplaycircuitandISD1820circuit.Themoreintelligent,humanizationdesign,tomeetthehumanneedsKeywords:Passwordlock；Doorbell；AT89C51；Intellectualization智能密码锁语音留言门铃的设计1目录摘要..................................................................................................................................................IABSTRACT..................................................................................................................................II1引言.............................................................................................................................................21.1研究背景...........................................................................................................21.2研究的目的与意义..........................................................................................31.3论文结构安排..................................................................................................42系统总体设计和模块简介....................................................................................................52.1系统设计框图..................................................................................................52.2控制模块...........................................................................................................62.2.1AT89C51的介绍....................................................................................62.2.2时钟电路..............................................................................................102.2.3复位电路..............................................................................................102.2.4存储电路..............................................................................................102.3语音模块.........................................................................................................132.3.1ISD1820芯片介绍...............................................................................132.3.2驻极体话筒的介绍...............................................................................152.4LCD显示模块................................................................................................162.5按键模块........................................................................................................182.6其他电路.........................................................................................................202.6.1LED控制电路.......................................................................................202.6.2蜂鸣器驱动电路...................................................................................203系统软件设计..........................................................................................................................213.1主程序设计框图.............................................................................................213.2密码锁程序设计.............................................................................................233.2.1初始化及按键识别...............................................................................233.2.2开锁处理...............................................................................................243.2.3改密处理...............................................................................................243.2.4液晶显示子程序.................................................................................