Abstract: Basing on the principle of carrier-current transceiver and coding by DTMF, the intelligent controlling on-off system with this principle and PIC single chip microcomputer is introduced.

• [摘要]： 通过对有线载波通信的原理和DTMF信号编码的特点的分析，集合PIC单片机的特点，介绍了利用PIC单片机实现对目标负载有线遥的智能开关控制系统。