Method for measuring the rotation speed of a vehicle wheel
US10288640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2016 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Nov 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/156
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring the rotation speed of a wheel including the steps of: acquiring an analog measurement signal (Sma) generated by a magnetic tachometer and containing a useful signal the frequency of which is representative of the rotation speed of the wheel; digitizing in real-time the analog measurement signal (Sma) in order to obtain a time-dependent digital measurement signal (Smnt); calculating a Fourier transform of the time-dependent digital measurement signal (Smnt) in order to obtain a frequency-dependent digital measurement signal (Smnf); and carrying out a frequency analysis in order to identify by a search for peaks a useful spectral line (16) so as to obtain the frequency of the useful signal and therefore the rotation speed of the wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.