High speed AC input sensor conversion
US11092464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2019 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | May 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/485
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for determining an amplitude of a sinusoidal output waveform from a sensor includes a controller configured to provide a sample signal having a sample frequency that is four times a frequency of a sinusoidal excitation waveform provided to the sensor. The sensor has inductively-coupled primary and secondary windings that produce the sinusoidal output waveform from the secondary winding when the excitation waveform is provided to the primary winding. An analog-to-digital converter measures a first and second voltage of the sensor waveform separated in time by the period of the sample frequency, and the system calculates the amplitude based on the measurements of the first and second voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.