A device for estimating a condition of a road surface on which a tire is travelling, the device including: an acceleration sensor 11 that detects acceleration in a tire radial direction, an acceleration waveform extracting unit 12 that extracts an acceleration waveform from the acceleration, a differential waveform calculating unit 13 that calculates a differential waveform of the acceleration waveform, a rotation time calculating unit 14 that calculates a rotation time of the tire from the differential waveform, a normalized acceleration waveform generating unit 15 that generates a normalized acceleration waveform by using the rotation time, and a road surface condition estimating unit 16 that determines whether or not a water infiltration condition between the tire and the road surface is in a condition to be shifted to a hydroplaning condition.


    Access

    Download


    Export, share and cite



    Title :

    ROAD SURFACE CONDITION ESTIMATION METHOD AND ROAD SURFACE CONDITION ESTIMATION DEVICE


    Additional title:

    VERFAHREN ZUR BEURTEILUNG DES STRASSENOBERFLÄCHENZUSTANDS UND VORRICHTUNG ZUR BEURTEILUNG DES STRASSENOBERFLÄCHENZUSTANDS
    PROCÉDÉ D'ÉVALUATION D'ÉTAT DE REVÊTEMENT ROUTIER ET DISPOSITIF D'ESTIMATION D'ÉTAT DE REVÊTEMENT ROUTIER


    Contributors:

    Publication date :

    2024-05-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B60C VEHICLE TYRES , Fahrzeugreifen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



    ROAD SURFACE CONDITION ESTIMATION DEVICE AND ROAD SURFACE CONDITION ESTIMATION METHOD

    KIMURA YOSUKE / MAJIMA HIROSHI / FUJIMORI MASAYA et al. | European Patent Office | 2020

    Free access

    ROAD SURFACE CONDITION ESTIMATION METHOD AND ROAD SURFACE CONDITION ESTIMATION DEVICE

    MASAGO TAKESHI | European Patent Office | 2020

    Free access

    ROAD SURFACE CONDITION ESTIMATION METHOD AND ROAD SURFACE CONDITION ESTIMATION DEVICE

    MASAGO TAKESHI | European Patent Office | 2019

    Free access

    ROAD SURFACE CONDITION ESTIMATION METHOD, AND ROAD SURFACE CONDITION ESTIMATION DEVICE

    WAKAO YASUMICHI | European Patent Office | 2020

    Free access

    ROAD SURFACE CONDITION ESTIMATION DEVICE AND ROAD SURFACE CONDITION ESTIMATION METHOD

    ISHII KEITA / MASAGO GO / ISHIZUKI MASAMU | European Patent Office | 2024

    Free access