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1、绵阳师范学院本科生毕业论文(设计)题目语音报警器设计专业物理学院系物理与电子信息工程系学号20032050姓名邓君指导教师曾小平答辩时间二○○七年六月语音报警系统设计学生:邓君指导老师:曾小平摘要:本设计主要由四个部分组成:信号采集、语音报警、电动机控制和电源电路。利用水位检测集成块ULN2429A检测水位的高低的电压信号,并由此电压信号控制语音报警电路和电动机控制电路,当水位高于探测的电极,集成块ULN2429A检测到水位信号,输出控制信号使继电器K闭合,语音报警电路闭合,语音集成块HFC9561B输出报警信号,再由功率放大集成块LM386进行信号放大,再到喇
2、叭,发出语音报警,同时电动机停止工作。当水位低于探测电极时,集成块ULN2429A检测不到水位信号,控制语音报警电路的继电器K断开,语音集成块HFC9561B不输出报警信号,同时继电器K使电动机也停止工作。电路电源是利用变压器和桥式整流滤波,再由7806和7812以及分压输出6V、12V、3V的工作电压。因此本设计是一种结构简单、性能可靠、操作方便的语音报警系统。关键词:语音报警,水位,电动机控制ThesystemPronunciationalarmStudent:dengjunInstructsteacher:zengxiaopingAbstract:Thed
3、esignmainlyiscomposedbyfourparts:Signalgathering,thepronunciationreporttothepolice,themotorcontrolandthepowercircuit.UsingwaterlevelexaminationintegrationblockULN2429Aexaminationwaterlevelheightvoltagesignal,andfromthisvoltagesignalcontrolpronunciationalarmcircuitandmotorcontrolelect
4、riccircuit,whenthewaterlevelishigherthan30M,integratedblockULN2429Aexaminationtowaterlevelsignal,controlpronunciationalarmcircuitcontactdeviceKclosed,pronunciationalarmcircuitclosed,incontextofcurrenttechnologyindexblockHFC9561Boutputalarm,enlargesagainbythepowerenlargementintegratio
5、nblockLM386clearsignal,againarrivestheloudspeaker,sendsoutthepronunciationtoreporttothepolice.Simultaneouslytheelectricmotorstartstoworkpumpswater;Toprearrangesuntilthewaterlevelthewaterlevel,integratedblockULN2429Aexaminesthewaterlevelsignal,thecontrolpronunciationalarmcircuitcontac
6、tdeviceKseparation,thepronunciationalarmcircuitseparation,incontextofcurrenttechnologyindexblockHFC9561Bdoesnotoutputthealarm,theelectricmotoralsoknockoff.Theelectriccircuitpowersourceisusesthetransformerandthebridgetyperectificationfilter,againoutputs6V,12V,the3Vworkingvoltageby7,80
7、6and7,812aswellasthedifferentialpressure.Thereforethisdesignisonekindofstructuresimple,theperformanceisreliable,theeaseofoperationpronunciationalarmsystem.Keyword:VoiceAlarm,thewaterleve,motorcontrol目录前言11语音报警系统的设计21.1性能特征21.2整机概述21.3语音信号采集与信号处理部分21.3.1HFC9561B的介绍21.3.2信号检测与信号提取电路31.
8、4功率放大集成电路41.