基于单片机的家用电器电话远程控制系统.doc

基于单片机的家用电器电话远程控制系统 基于单片机的家用电器电话远程控制系统 本文设计的是一种基于AT89C51单片机的远程电话控制系统。该系统是以AT89C51为核心、利用现有的个人通信终端,实现基于PLMN(陆基移动通信网)和PSTN(公用电话交换网)的电话远程控制系统。电话远程控制系统(ITRCS),以CCITT（国际电报电话咨询委员会）及我国标准共同规定的部分标准程控交换信令(DTMF双音多频信号,振铃信号,回铃音信号等)作为系统控制命令,以PLMN与PSTN通信网作为传输介质,使用者可以在远端利用固定电话或移动电话发送DTMF双音多频信号,实现对近端电器设备的实时远程控制。该电话远程控制系统不需进行专门的布线,不占用无线电频率资源,从而可避免电磁污染；且通过嵌入式的智能语音提示,突出的语音提示功能和密码控制系统,可使操作者根据各种提示音及时了解受控对象的有关信息。还可通过发出语音命令用电话远程控制多个受控对象,用户可以查询其状态,提供密码处理功能,只有输入正确的密码才能控制家电,从而提高了安全性。该系统设计实用，功能灵活多样，可靠性高，操作方便，可以广泛地应用于家庭或者其它场所的智能控制。 ? 关键词　AT89C51；远程电话控制；DTMF；智能家电 The Telephone Remote Control System for Household Electronic Appliance Base on The Microcontroller Abstract The article designed the remote telephone control system which based on microcontroller AT89C51. Basing on the PLMN and PSTN, the system which uses the core controller Single-chip microcomputer AT89C51 realizes long-distance control household appliances. The telephone control system (ITRCS) which uses the telephone net convert and voice information receives DTMF code from the telephone net, and interpret the code, the core controller controls the state of household appliances responded to the interpretation. Long distance control of telephone does not require special wires distribution and does not take up wireless frequency resources. Electro magnetic pollution can thus be avoided. The designing of a system of long－distance control based on sound processing technology and DTMF decoding technology is presented in this paper. By using sound commands of sound recognition technology, this system realizes its control of household electrical appliances through telephone networks and so realizes the intelligently control of them in residence. The embedded and intelligent sound indication, its outstanding sound function of prompt and its code control system enable the operators to timely obtain the relative information of the controlled objects through indicated sounds. The system can use telephone to control many household electrical app