Power distribution grid communication system
First Claim
1. A system for demand side management of electrical household appliances connected to an AC power grid, said system comprisinga signal input device associated with said power grid for injecting a coded low band broadcast signal onto said power carrier signal, said coded broadcast signal being coded using a spread spectrum technique and a low frequency band, a signal receiving device located on said grid on a low voltage side of a distribution transformer connected to individual services, said signal receiving device receiving said spread spectrum low band broadcast signal and decoding said coded signal to produce a household broadcast signal, said signal receiving device cooperating with a signal converting and transmitting device for converting said household broadcast signal to a broadcast signal using a different protocol injected on the lines to any individual services associated with said transformer, a host of household receiving devices each of which is associated with one household and receives and processes said household broadcast signal, each household receiving device communicating with a user interface device for a) querying said household receiving device and displaying information provided in said household broadcast signal, and b) adjusting user set control parameters for selected electrical appliances which are remotely controlled by said household receiving device according to said user set parameters and parameters of a power provider.
1 Assignment
0 Petitions
Accused Products
Abstract
A communication system arrangement uses powerline distribution systems to broadcast a signal from the distribution station to individual households. The signal is coded, using a spread spectrum technique and the receiving arrangement is designed to process the signal quickly for transmission to downstream households. In a preferred embodiment equipment, within each household is able to initiate a communication to a predetermined computer for reporting in accordance with an instruction signal received over the powerline system. With this system, a narrow band broadcast signal arrangement is realized, which does not require extensive modification to the distribution system.
-
Citations
7 Claims
-
1. A system for demand side management of electrical household appliances connected to an AC power grid, said system comprising
a signal input device associated with said power grid for injecting a coded low band broadcast signal onto said power carrier signal, said coded broadcast signal being coded using a spread spectrum technique and a low frequency band, a signal receiving device located on said grid on a low voltage side of a distribution transformer connected to individual services, said signal receiving device receiving said spread spectrum low band broadcast signal and decoding said coded signal to produce a household broadcast signal, said signal receiving device cooperating with a signal converting and transmitting device for converting said household broadcast signal to a broadcast signal using a different protocol injected on the lines to any individual services associated with said transformer, a host of household receiving devices each of which is associated with one household and receives and processes said household broadcast signal, each household receiving device communicating with a user interface device for a) querying said household receiving device and displaying information provided in said household broadcast signal, and b) adjusting user set control parameters for selected electrical appliances which are remotely controlled by said household receiving device according to said user set parameters and parameters of a power provider.
Specification