A house security and KWH meter and water and gas meter auto reading system through powerlines, which has fine application prospect, is introduced in this paper. Key technique is given.

• 介绍了利用电力线载波通讯实现用户三表（电度表、水表、煤气表）自动抄表及家庭安全保障系统的构成和原理，分析了技术关键，指出了该系统的应用前景。