Apparatus and methods for power network coupling

H - Electricity – 04 – B

Patent

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H04B 3/56 (2006.01)

Patent

CA 2242432

Methods and apparatus for establishing communications between electrical and electronic devices utilizing existing power signal distribution networks are disclosed. In such methods and apparatus the transmitting and receiving components of such devices are coupled between line and ground. Such coupling is achieved utilizing a coupler, a first frequency reactive device, such as a drain coil or inductor, connected in series with neutral and a second frequency reactive device, such as a capacitor connected between neutral ground. For use with existing electronic equipment, an adaptor for coupling the communications signal to a power signal distribution network is also disclosed. Since, line and neutral paths may sometimes be mis-wired, the apparatus and methods also disclose the use of a switch for enabling the coupling of a communication signal when a power signal is sensed on the line path.

Méthodes et appareil permettant d'établir des communications entre des dispositifs électriques et électroniques en utilisant les réseaux de distribution d'énergie électrique existants. Les composantes émettrices et réceptrices de ces dispositifs sont couplées entre les bornes de phase et de terre. Ce couplage est réalisé au moyen d'un coupleur, d'un premier dispositif sensible à la fréquence, p. ex. une bobine de drainage ou un inductance, connectée en série avec la borne neutre, et d'un deuxième dispositif sensible à la fréquence, p. ex. un condensateur connecté entre le neutre et la terre. Un adaptateur pour équipement électronique existant, permettant de coupler le signal de communication à un réseau de distribution d'énergie électrique, est également présenté. Comme les trajets de phase et de neutre peuvent parfois être mal câblés, un commutateur permettant le couplage d'un signal de communication lorsqu'un signal électrique est détecté sur le trajet de phase.

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