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COMMUNICATIONS SYSTEM FOR ELECTRIC POWER UTILITY

  • US 3,702,460 A
  • Filed: 11/30/1971
  • Issued: 11/07/1972
  • Est. Priority Date: 11/30/1971
  • Status: Expired due to Term
First Claim
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1. A computer-controlled communication system for an electric power utility for communicating with terminal points of its energy transmission network by means of high frequency coded signals, comprising:

  • a. a plurality of group signal transceivers, each in communications linkage with said computer, for receiving coded data signals from said computer and channeling them to said terminal points at said high frequency, and for Transmitting system data to said computer;

    b. signal processing means having a terminal signal processing unit located at each of said terminal points, for receiving and processing said high frequency coded signals, and for generating system data;

    c. a signal transmission network for transmitting said coded signals from said transceivers to said signal processing means comprising the neutral of said power utility transmission network and ground return;

    d. terminal coupling means for coupling said signal processing means to said neutral;

    e. transceiver coupling means for coupling each of said group signal transceivers to said neutral and for limiting to a respective group transceiver communication of such coded signals with a specific group of said terminal signal processing units;

    f. each such terminal signal processing unit comprising;

    i. data receiving means for detecting and storing said high frequency coded signals;

    ii. data processing means, coupled to said data receiving means, for processing said received coded signals to generate an electrical signal in accordance with the information content thereof;

    iii. function driver means, coupled to said data processing means, for generating electrical signals to perform functions specified by said coded signals;

    iv. data device reading means, coupled to said data processing means, for interrogating and deriving coded information from data devices coupled to the respective terminal processor, in accordance with the information content of said received coded signals; and

    , v. data transmitting means, coupled to said data device reading means, and cooperating with that group transceiver with which said respective terminal signal processing unit is in communications linkage for transmitting such derived data thereto; and

    g. wherein said data receiving means comprises;

    i. amplifier receifier means for demodulating said high frequency coded signals and generating pulses representing data bits;

    ii. a shift register, having a plurality of bit positions, coupled to said amplifier rectifier means;

    iii. a clock generator, coupled to and cooperating with said shift register, for loading said pulses into said shift register;

    iv. shift inhibit means, for inhibiting loading of further pulses into said shift register after it has been fully loaded; and

    , v. time delay-reset means, for resetting said shift register after a predetermined time delay.

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