DTMF式自动抄表系统

An automatic meter reading system on dual tone modulation frequency(DTMF)

介绍一种基于双音多频(DTMF)方式的自动抄表系统,给出了其硬件电路设计和软件框图。本系统的优点是成本低,适于读取分散的居民楼中的电度表数据。

This paper presents an automatic meter reading system on dual tone modula-tion frequency(DTMF).Discussed its circuit principle and design method of program.It has the advantages of reducing cost of AMRS and reading data of Watthour meter in the scattered flats.