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基于DTMF技术的单片机远程通信系统研究

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  • Update : 2016-03-17
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Introduction - If you have any usage issues, please Google them yourself
目前,人们的生活向着智能化,人性化的方向发展着。越来越多的高科技进入了我们的生活中。其中家用电器的远程控制也正被推广开来。本着低耗能、无污染、使用方法简单方便的原则。本文设计的是一种基于AT89S51单片机的远程电话控制系统。该系统是以AT89S51为核心、通过现在的个人通信手段,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。根据CCITT及我国标准共同规定,电话远程控制系统(ITRCS),以PSTN与PLMN通信网作为传输介质,以部分标准程控交换信令(DTMF双音多频型号,振铃型号,回铃音信号等)作为系统控制命令,使用户实现在远端通过移动电话或者固定电话发送DTMF双音多频信号对近端电器设备进行远程控制。本次设计的电话远程控制系统不需要再进行专门的布线,不占用无线电频率资源,从而可避免电磁污染。用户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。
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