Remote sensing to derive calibrated power measurements
US9702959B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2016 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Sep 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R22/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Described herein are methods and systems for remote sensing to derive a calibrated power measurement for a power distribution point. Magnetic field sensors of a sensor module sense a magnetic field emitted by the power distribution point. A first processor generates an uncalibrated power measurement for each magnetic field sensor, the uncalibrated power measurement derived from the magnetic field sensed by the magnetic field sensor and a voltage carried by the power distribution point. A second processor determines a response of each magnetic field sensor to a known power load being drawn through the power distribution point. The second processor derives a transfer function using the response of each magnetic field sensor to the known power load. The second processor applies the transfer function to the uncalibrated power measurement for each magnetic field sensor to generate the calibrated power measurement for the power distribution point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.