Method and apparatus for operating an electricity meter
US8854217B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2013 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Mar 14, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus that monitors and controls the operation of an electricity meter, and modifies at least one temperature threshold for determining when an alarm message should be transmitted or an electrical connection in the meter should be disconnected. The method and apparatus includes a plurality of sensors that detect temperatures in various locations within the electricity meter. The method and apparatus compares at least one detected temperature to at least one threshold, and operates an alarm or a switch when the detected temperature exceeds the threshold. The method and apparatus determines an average rate of change for at least one temperature according to a short-term temperature average over a first number of samples of the temperature, and a long term-term temperature average over a second number of samples of the temperature. The second number of samples is different from the first number of samples. The method and apparatus reduces the threshold when the average rate of change exceeds a predetermined amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.