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1、摘要本文介绍了一种以AT89S51单片机设计的医院病房无线呼叫系统。该系统由单片机系统、无线收发系统、功能开关、1602液晶显示器、以ISD4004语音芯片为主的语音系统等单元电路组成。该系统所用到的无线收发系统采用315无线收发模块的PT2262和PT2267编解码芯片,利用单片机的串行半双工通信来实现。它的核心控制器采用价格低廉,性能可靠的单片机。该系统主要工作原理是分机按键呼叫,主机声光报警,同时显示呼叫的号码,主机按键可回复。研究表明该系统使用方便、快捷、安全可靠,可应用于医院、茶庄、KTV、餐厅等领域。在市场经济体制中,尤其在服务性的行业中,更省人、省钱、省心,更能提高企业效
2、率,提高服务形象,带来更好的经济效益,可作为电子产品进行开发研制,具有很好的推广价值。关键词:单片机技术无线发射和接收无线呼叫系统-I-AbstractThispaperintroducesaSCM(single-chipmicrocomputer)ATMELAT89S52MCUasawirelesscallingsysteminhospitalwards.ThissystemconsistsofSCMsystem,wirelesstransceiversystem,thefunctionalswitch,1602LCD,andbythemainofvoicISD4004asavoic
3、esystemsunitcircuitetc.Whattheuseofthesystemisthewirelesstransceiversystemwhichinvlvesawirelesstransceivermodule315ofthePT2262andPT2267codecchip,andbringsabouttheSCM’shalf-duplexcommunication.ThecorecontrolleroptionaledSCMwithlowpriceandreliableperformance.Thecallextpressthenthehostsound-lightal
4、arm,displaythecallnumbersatthesametimeandatlastthehostgiveareplybypressthebuttonisthemainworkingprincipleofthesystem.Thestudyshowsthatthissystemhasthecharacteristicsofeasytosue,fast,safeandreliable.Anditcanbeusedsomesocialfieldssuchashospital,teahouse,KTV,restaurant,etc.Inthemarketeconomicsystem
5、,especiallyintheserviceindustry,Usingitthatcanbemoresavingstaffs,moneyaswellastrouble.Whatmoreitcanimprovesthecompany’sefficiency,enhancestheimageofservices,andbringseconomicbenefits.Soitcanbeusedaselectronicproducttoresearchanddevelopment,Inmyopinion,ithasagoodvalueofpromotion.Keyword:SCM(singl
6、e-chipmicrocomputer)TransmitandreceivewirelessTheWirelessCallingSystem-II-目录摘要................................................................................................ⅠAbstract..........................................................................................Ⅱ一、绪论..................
7、........................................................................1(一)设计任务....................................................................................1(二)设计要求....................................................