Coupling circuit for power line communications

H - Electricity – 04 – B

Patent

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H04B 3/56 (2006.01)

Patent

CA 2442302

A method and system are given for a coupling a data signal over a power distribution system. An inductive signal coupler has two windings. The first winding is in series with a line conductor of the power distribution system. A capacitor is connected between the first line conductor and a second line conductor of the distribution system such that the capacitor presents a high impedance to a power signal and a low impedance to a data signal. A communication device is connected to the second winding so that a data signal can be coupled between the communication device and the distribution system.

L'invention concerne un procédé et un système permettant d'injecter un signal de données dans un système de distribution d'alimentation. Un coupleur de signal inductif comporte deux bobinages. Le premier bobinage est monté en série avec un conducteur de ligne du système de distribution d'alimentation. Un condensateur est connecté entre le premier conducteur de ligne et un second conducteur de ligne du système de distribution, de sorte que le condensateur présente une haute impédance par rapport au signal d'alimentation, et une faible impédance par rapport au signal de données. Un dispositif de communication est connecté au second bobinage de sorte qu'un signal de données puisse être couplé entre le dispositif de communication et le système de distribution.

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