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Programmable demand register with two way communication through an optical port and external reading devices associated therewith

  • US 4,542,469 A
  • Filed: 08/12/1982
  • Issued: 09/17/1985
  • Est. Priority Date: 08/12/1982
  • Status: Expired due to Fees
First Claim
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1. A programmable demand register (PDR) for registering AC electric energy consumption by a load comprising:

  • energy flow pick-up means;

    optical scanning means including light emitting and light receiving sources, completion of light transmission therebetween being periodically interrupted by said energy flow pick-up means;

    a transducer responsive to the transmit-non transmit mode of said optical scanner means to produce a binary code output which is directly related to electric energy consumption and which is stored in a first memory;

    clock means producing real time data;

    a second memory containing program control data;

    bidrectional optical communciation port means,PDR data output means whereby, upon receipt of a signal, the data stored in said first memory is transmitted to a receiver external of the PDR; and

    PDR data input means whereby the meter memories may, upon receipt of a proper password signal, be actuated.

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