Dual mode meter reading apparatus
US4439764A · kind A · utility
32Cited by
21References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1981 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Apr 9, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.