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Low voltage power line carrier communications at fundamental working frequency

  • US 20020130768A1
  • Filed: 07/13/2001
  • Published: 09/19/2002
  • Est. Priority Date: 03/14/2001
  • Status: Abandoned Application
First Claim
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1. A method for digital data transmission in a low voltage AC power line network, comprising the steps of:

  • transmitting a AC voltage waveform to deliver power in the power line network;

    generating a carrier signal representing the digital data, said carrier signal superimposed on the AC voltage waveform;

    introducing a triggering DC voltage having an amplitude that is higher than the threshold of the expected noise level in the carrier signal; and

    receiving the carrier signal and determining from the carrier signal the digital data based on presence of the triggering voltage of the carrier signal.

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