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Portable programmer for time-of-day metering register system and method of using same

  • US 4,093,997 A
  • Filed: 09/17/1976
  • Issued: 06/06/1978
  • Est. Priority Date: 09/17/1976
  • Status: Expired due to Term
First Claim
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1. A portable programmer for programming a multiple rate electrical energy meter of the type including a first mechanical register for continuously registering the consumption of electrical energy, at least one alternate mechanical register for registering the consumption of electrical energy during preselected time intervals, a sync signal generator for generating a sync signal, a controllable clock for generating signals normally representative of real time, a recirculating storage for storing time data signals representative of a plurality of predetermined times and for storing function data signals representative of control functions to be performed at said predetermined times, a comparator for periodically comparing the signals from said clock with the time data signals, logic circuitry responsive to an output of said comparator and to the function data signals from said recirculating storage for generating at least one function control signal in accordance with the function data signals when a comparison exists between said time data signals and the signals from said clock, and means responsive to said at least one function control signal from said logic circuitry for engaging or disengaging said at least one alternate register in accordance with said at least one function control signal, said portable programmer comprising:

  • (a) first clock means, operating at a specified frequency, for generating real time signals;

    (b) means responsive to said real time signals for displaying real time;

    (c) means for setting said first clock means to a predetermined real time;

    (d) second clock means for generating high frequency clock signals, said second clock means being stepped by said sync signal from said multiple rate meter at a substantially greater frequency than the operating frequency of said first clock means;

    (e) means for comparing the real time signals and the high frequency clock signals from said first and second clock means respectively; and

    (f) means for inhibiting the operation of said controllable clock in said multiple rate meter when a comparison exists between said real time signals and said high frequency clock signals.

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