Dual mode meter reading apparatus
AssigneeWestinghouse Electric Corp.
InventorsTheodore H. York, Roger D. Moates
Life of this patent
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Abstract
A remote meter reading system includes a dial register encoder and a pulse encoder both coupled to the same rotary disc of our induction watthour meter. A first electronic data register stores the non-volatile dial register encoder output, and a second electronic data register stores a value consisting of an initial value set by the dial register encoder at start-up time continuously augmented by the output of the pulse encoder since start up. Comparison and selective readout of the two electronic data registers reduces erroneous meter reading outputs.
Claims6
A dual mode meter reading apparatus, comprising:
- first meter encoder means for producing first meter reading values representing totals of a first predetermined value of a progressively increasing quantity to be measured;
- second meter encoder means for producing repetitive indications of a second predetermined value of said quantity to be measured, said indications being produced at a rate proportional to the rate of increase in said quantity to be measured;
- first data storage means selectively responsive to said first encoder means for storing said meter reading values occurring at predetermined times;
- and
- second data storage means receiving said first meter reading values occurring at a predetermined initial time and further being responsive to said second encoder means for incrementing said meter reading value occurring at said initial time by amounts proportional to said repetitive indications.
A dual mode meter reading apparatus for integrating meters having a measuring element rotatable at a rate proportional to the consumption of a quantity to be measured, said apparatus comprising:
- dial encoder means (36) including a plural order dial register assembly (20) for totalizing the rotation of said measuring element (14) and coding means (46) producing plural binary dial code logic words (DC5-DC1) each being responsive to a separate dial indicator (35-31) of said dial register assembly;
- first meter data storage means (60) for storing binary coded representations of said dial codes at plural digit positions (D5-D1) corresponding to the plural dial positions of said dial register assembly;
- pulse encoder means (38) producing meter pulses (68, 69) at a rate responsive to the rate of rotation of said measuring element so that each of the meter pulses is proportional to a predetermined quantum of the quantity to be measured;
- second meter data storage means (61) for storing binary coded representations of the accumulation of said meter pulses at plural digit positions (MDR-3DR) corresponding to the same number of digit positions as included in said first meter data storage means;
- and
- output means for selectively outputting the binary coded representations of said first and said second meter data storage means in a common message data word format.
Dependencies are inferred from the claim text.