Diode noise filter for a speed sensor with mechanically-induced electrical noise
US10161952B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2016 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Jan 27, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/488
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for filtering mechanically-induced signal noise from a speed sensor may include a rotating member having at least one target group radially oriented about a center of the rotating member, an inductive speed sensor configured to sense the at least one target group, and two diode pairs each having a first diode and a second diode. The two diode pairs may be operatively connected to the inductive speed sensor and configured to receive a signal having the mechanically-induced signal noise. The system may also include a resistor connecting the diode pairs, a processor connected in parallel with the resistor and configured to receive a signal from the inductive speed sensor. The processor may be configured to receive a signal having reduced signal noise via the diode pairs, and determine a rotational speed of the rotating member based on the signal having reduced signal noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.