Patent
Control system employing a programmable multiple channel controller for transmitting control signals over electrical power lines
TLDR
In this article, a programmable multiple channel digital controller is used to generate control signals which are transmitted over electrical power lines of a building complex for enabling receivers associated with functional devices for controlling the operation of functional devices.Abstract:
A control system including a programmable multiple channel digital controller which is operable to generate control signals which are transmitted over electrical power lines of a building complex for enabling receivers associated with functional devices for controlling the operation of functional devices, the transmitter being operable to transmit control signals during selected ones of a plurality of data channels which define a data frame, and in one embodiment, different ones of the receivers are programmed to respond to control signals transmitted in different data channels for controlling the associated functional device In another embodiment, the transmitted control signals are coded to represent an address of one or more of the receivers and a control command, each receiver comparing its address with the transmitted address, and the addressed receiver effecting the control function represented by the control commandread more
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References
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Patent
Control system having transmitter-receiver sets for operating functional device over power lines
TL;DR: In this paper, a control system for operating functional devices over an AC power line is presented, which includes a transmitter for each functional device connected to the power line for generating coded signals for transmission over power line, and a receiver for each function device that is responsive to the coded signals transmitted over the line by the corresponding transmitter.