Electronic kilowatt-hour meter for measuring electrical energy consumption
US4345311A · kind A · utility
57Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 7, 1980 |
| Grant date | Aug 17, 1982 |
| Priority date | — |
| Expiry date | Jan 7, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R21/133
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a kilowatt-hour meter for measuring electrical energy consumption from an alternating electrical supply, a microprocessor includes a clock signal generator which is synchronized in phase with the incoming supply frequency. Pulse sampling means controlled by the clock generator sample the incoming voltage and current waveforms at a preselected time instant or instants in each cycle and the sampled data is utilized in the microprocessor to determine energy consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.