Verfahren zur Synchronisation der Zeit eines Reifenmontierten Sensors mit dem Strassenaufprall und zur Messung der Dauer und Amplitude der Aufstandsfläche

Details

Veröffentlichungs-Nr.

EP4140782

Aktenzeichen

EP21193660

Anmeldetag

27. August 2021

Veröffentlichung

10. Dezember 2025

Erteilung

10. Dezember 2025

Rechtsraum

EP

IPC

B60C23/04B60T8/172B60W40/12

Abstract

A method for measuring impact signals over a plurality of revolutions of a tire that rolls on a road surface is provided, the impact signals being induced in acceleration data measured by an acceleration sensor mounted in the tire at a contact patch coming into contact with the road surface with each revolution of the tire. The method comprises acquiring the acceleration data over a plurality of revolutions of the tire and processing the acceleration data at the sensor. Processing the acceleration data at the sensor comprises processing the acceleration data to measure acceleration values for each impact signal and calculate an impact peak acceleration value (a_min); calculating a running average of the impact peak acceleration value (a_min) over the plurality of revolutions of the tire; measuring a start time and an end time of each impact signal by comparing acceleration values of the acceleration data to a first or second dynamic threshold, wherein the dynamic threshold is adjusted dependent on the running average of the impact peak acceleration value (a_min); and generating, from the measured start time and end time of each impact signal, a time-related parameter chosen from one or more of: a duration of an impact signal (t_patch), a time period between two consecutive impact signals (t_rev), and a ratio between the duration (t_patch) and the time period (t_rev). The method further comprises transmitting the time-related parameter to an external server.

Anmelder

Firma

Bridgestone Europe NV/SA

Land

🇧🇪 Belgien

Fachgebiete