1線式PLCによる信号中継システムの提案
Proposal of Signal Repeater by One Wire PLC system
著者:
都築 伸二 Shinji TSUZUKI 松井 隆 Takashi MATSUI
発刊日:
公開日:
Capacitive couplerCommon-mode transmission systemInductive couplerNarrowband PLC (NB-PLC)Single phase three wire distribution systemSmart grid
概要
Abstract: The conventional narrowband power-line communication (NB-PLC) is a two-wire system, that have transmitted its signal between wires with a capacitive coupler. When performing communication between floors at a large-sized building, the signal has to travel over long-distances across a switchboard which supplies electricity to distribution boards. Moreover, the signal is attenuated also at the switchboard and distribution boards. Then signal amplifiers have had to be installed at the boards. In this paper, a single wire PLC solution has been proposed to reduce the communication distance and avoid the attenuation due to the boards by taking a shortcut. It has been described experimentally that the earth could be used as its signal returning path to a source. An inductive coupler suitable to this system has been also proposed. The signal attenuation of the proposed system was 30dB better than that of the conventional two wire system according to our scenario.
