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Power line sag monitor

  • US 6,523,424 B1
  • Filed: 10/20/2000
  • Issued: 02/25/2003
  • Est. Priority Date: 10/07/1998
  • Status: Expired due to Fees
First Claim
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1. A sag monitor system for use on a span of a power conductor, the span being a section of the power conductor suspended between a pair of transmission towers, the sag monitor system for monitoring sag therein during power transmission, the sag monitor system comprising:

  • an accelerometer positionable adjacent and parallel to the power conductor approximate one of its suspension points, the accelerometer outputting a voltage correlated to an angle of inclination of the conductor;

    a transmitter electrically connected to the accelerometer for reading the voltage output by the accelerometer and transmitting signals indicative of the voltage output by the accelerometer;

    a remote processor including a receiver for receiving signals indicative of the voltage output of the accelerometer, and calculating the sag in the power conductor based upon these signals, wherein multiple accelerometers are each positionable adjacent to the power conductor on different spans thereof whereby each accelerometer has an associated transmitter electrically connected thereto for reading the voltage output by that accelerometer and transmitting signals indicative of the voltage output by that accelerometer, and where the remote processor receives signals indicative of the voltage output by all of the multiple accelerometers whereby such signals each is identifiable to its respective accelerometer, and further comprising a transceiver for use with one or more accelerometers, the transceiver for receiving voltage output signals from the transmitters connected to each of the accelerometers and transmitting a long distance signal indicative of the voltage outputs to the remote processor, and the multiple accelerometers are aligned in series whereby voltage output signals from each accelerometer is communicated via other accelerometers until such output signals are received by the transceiver and transmitted as the long distance signal indicative of the voltage outputs to the remote processor.

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