具有学习功能的家用电器电话远程控制系统设计

The Design of Household Appliance Telephone Remote Control System with Self-learning Function

采用增强型51单片机STC12C5A60S2作为核心控制元件,设计了振铃检测电路、摘挂机模拟电路、DTMF译码电路、语音提示电路等。编写了控制程序,实现了家用电器的电话远程控制。阐述了单片机系统远程控制家用电器的原理,给出了DTMF信号的接收和解码过程,接收电路芯片MT8870的使用,以及针对用户的语音操作指导。对复杂电器和简单电器分别作出了不同的控制方案,对其中复杂电器这一类提出了具有自学习功能的单片机远程控制方案。结果表明,该系统可以对绝大多数电器实现电话远程控制。

In this paper,the enhanced 51 SCM STC12C5A60S2 is chosen as the core control component,and the ringing detection circuit,the hang up analogy circuit,DTMF decoding circuit,and voice guidance circuit and so on are designed. Then the control program is written. At last,the household electrical appliances telephone remote control system can be realized. This paper focuses on the telephone remote control theory to fulfill the household electrical appliances control through single chip microcomputer,and gives the DTMF signal receiving and decoding process,the use of receiving circuit chip MT8870 and the voice operator guidance to the user. Two different control schemes are presented for complex electrical appliances and simple electrical appliances respectively,and moreover especially for the complex electrical applications a self-learning single chip microcomputer remote control scheme is proposed. The research shows that the system can make the telephone remote control realized for almost all household electrical appliances.