Electrical phase computation using RF media
US11411598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2019 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | May 29, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2209/60
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Techniques for computing electrical phase of electrical metering devices are described. In an example, data indicating zero-crossing times at first and second metering devices is obtained. A time-difference between the zero-crossing times may be determined. In a first example, the time-difference may be based at least in part on calculations involving a first value of a first free-run timer on a first metering device, a second value of a second free-run timer on a second metering device, and a time of a transmission between the metering devices. In a second example, the time-difference may be based at least in part on calculations involving a start or end time of a time-slot of a spread spectrum radio frequency transmission scheme. A phase difference between the first zero-crossing and the second zero-crossing may be determined, based at least in part on the determined time-difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.