摘要
本系统在单片机控制下利用DTMF信号，通过电话网络和电源网络对远距离电度表测试点进行数据传送，以达到自动抄表和计费的目的。
Presents a data logging system, transmitting long-distance data of electric meter through teleconununication and power supply networks by DTMF signals under PC control, for data logging and charging automatically.
