04302750 is referenced by 91 patents and cites 5 patents.

A data communications system for conveying load control commands, power usage data, and other data on electric power lines. A remote module for reading the power usage meters and controlling loads is disposed at each power usage location. A group of remote modules convey their power usage data to an associated communications terminal to be accumulated, organized and stored. The group also receives load control commands from the communications terminal to cause them to initiate specific load control functions. There are a plurality of communications terminals disposed at various intervals along the primary distribution feeders. A central control unit collects the usage data from the remote modules, generates load control commands, and the like. Communications between the control unit and a destination communications terminal are relayed by the intermediate communications terminals. If an intermediate communications terminal should fail to relay communications properly, the central control unit and the other communications terminals isolate and by-pass the malfunctioning unit. If a communications terminal should fail to communicate properly with its associated group of remote modules, another communications terminal can be programmed to assume its function.

Title
Distribution automation system
Application Number
6/63568
Publication Number
4302750
Application Date
August 3, 1979
Publication Date
November 24, 1981
Inventor
Joseph F Russial
Pittsburgh
PA, US
Romesh T Wadhwani
Pittsburgh
PA, US
Agent
Fay & Sharpe
Assignee
Compuguard Corporation
PA, US
IPC
H04Q 11/00
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