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Heating cable control and monitoring method and system

  • US 5,900,179 A
  • Filed: 12/01/1997
  • Issued: 05/04/1999
  • Est. Priority Date: 01/16/1996
  • Status: Expired due to Term
First Claim
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1. A method for monitoring at least one parameter in a structure having power lines, the method comprising the steps of:

  • disposing a plurality of addressable remote terminals throughout the structure;

    sensing a parameter and applying signals representative of the parameter to the plurality of remote terminals;

    bi-directionally transmitting data corresponding to the sensed parameter from each remote terminal over a network including the power lines by spread spectrum transmission to at least one addressable main controller and transmitting data from the at least one addressable main controller to the plurality of addressable remote terminals over the network including the power line by spread spectrum transmission.

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