POINT-TO-POINT COMMUNICATIONS SYSTEMS PARTICULARLY FOR USE IN POWER DISTRIBUTION SYSTEM
First Claim
1. In a power distribution system, a point-to-point communications system for transmitting messages from any location within the power distribution system to any other location therewithin, comprising:
- a transmitter at said any location modulating a waveform propagated through the power distribution system to supply power throughout the system, the transmitter being a resonating transmitter generating a dampened sinusoidal waveform that is transmitted through the power distribution system together with the propagated waveform;
a controller controlling operation of the transmitter for generating a dampened sinusoidal waveform whose characteristics represent information conveyed over the power distribution system; and
,a receiver at said any other location for receiving and demodulating the dampened sinusoidal waveform to extract from it the information being conveyed.
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Accused Products
Abstract
A point-to-point communications system (20) for transmitting messages from any location (A) within a power distribution system or network (10) to any other location (B) within the network. A transceiver (12) at the one location includes a transmitter (X) that impresses a waveform (WR) on a waveform (WG) propagated by the network to supply power throughout the network. The transmitter is a resonant transmitter that includes a reactive load (13) which is selectively connected to and disconnected from the power distribution network. A controller (16) controls operation of the transmitter to connect and disconnect the reactive load from the network so to impress on the propagated waveform a dampened sinusoidal waveform whose characteristics represent information conveyed over the power distribution system. A receiver (Yn) at the other location receives and demodulates the dampened sinusoidal waveform to extract therefrom the information being conveyed by it.
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Citations
37 Claims
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1. In a power distribution system, a point-to-point communications system for transmitting messages from any location within the power distribution system to any other location therewithin, comprising:
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a transmitter at said any location modulating a waveform propagated through the power distribution system to supply power throughout the system, the transmitter being a resonating transmitter generating a dampened sinusoidal waveform that is transmitted through the power distribution system together with the propagated waveform; a controller controlling operation of the transmitter for generating a dampened sinusoidal waveform whose characteristics represent information conveyed over the power distribution system; and
,a receiver at said any other location for receiving and demodulating the dampened sinusoidal waveform to extract from it the information being conveyed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of point-to-point communications in a power distribution system comprising:
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impressing on a waveform propagated through the power distribution system to supply power throughout the system, a dampened sinusoidal waveform; controlling generation of the dampened sinusoidal waveform to produce a dampened sinusoidal waveform whose characteristics represent the information being conveyed over the power distribution system; and
,receiving and demodulation the dampened sinusoidal waveform at a location within the power distribution system other than the location where the dampened sinusoidal waveform was produced to extract therefrom the information being conveyed. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 35, 36, 37)
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23. A method of point-to-point communications in a power distribution system comprising:
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propagating a waveform through the power distribution system to supply power throughout the system; impressing on the propagated waveform a dampened sinusoidal waveform the characteristics of which define information to be conveyed throughout the power distribution system; and receiving and demodulating the resultant waveform at a location within the power distribution system other than the location at which the dampened sinusoidal waveform was impressed on the propagated waveform thereby to extract the information being conveyed. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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- 31. The method of claim 31 in which receiving the dampened sinusoidal waveform includes coupling a current transformer to a power line of the power distribution system at said any other location.
Specification