Power meter
US7447603B2 · kind B2 · utility
65Cited by
2References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2005 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Jan 29, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R22/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The computational resources of a digital power meter can be reduced by utilizing an interrupt requested in anticipation of interrupt latency to perform real-time tasks, an approximation of a root mean square load current at an earlier time to compensate for a phase shift between the load current and the current transducer output, and an amplitude that is neither zero nor maximum to distinguish the cycles of a harmonically distorted waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.