Method for determining the movement of a motor vehicle provided with a system for monitoring the pressure of a tire
US10780892B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 17, 2018 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | May 17, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2530/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for determining the start of movement of a motor vehicle equipped with a system for monitoring tire pressure of a motor vehicle. Communication between the receiver and each pressure monitoring system emitter being subjected to a Doppler effect so that a periodic component is inserted by the emitter into the signal emitted to the receiver. The method includes: acquiring the intermediate-frequency signal before demodulation by a processor to extract data carried by the radiofrequency signal, determining the FFT of the IF signal, determining the average value of the FFT of the IF signal over a preset duration, and determining whether there is a frequency deviation by comparing the instantaneous value of the fast Fourier transform to the average value of the fast Fourier transform, if so, determining whether the emitter for monitoring the pressure of a tire is moving and that the vehicle is moving.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.