PROBLEM TO BE SOLVED: To provide a detection device of a reduced pressure of a tire which can detect a reduced pressure of a tire with high accuracy irrespective of a travel speed of a vehicle.SOLUTION: A detection device detects a reduced pressure of a tire mounted on a vehicle. The detection device includes a frequency estimation part, and a reduced pressure determination part. The frequency estimation part estimates a first index indicating a first resonance frequency of the tire and estimates a second index indicating a second resonance frequency of the tire higher than the first resonance frequency based on rotation speed signals of the tire in time series. The reduced pressure determination part determines whether the pressure of the tire is reduced or not based on the first index and the second index.SELECTED DRAWING: Figure 3

    【課題】車両の走行速度に関わらず、タイヤの減圧を高精度に検出することができるタイヤの減圧の検出装置を提供する。【解決手段】車両に装着されたタイヤの減圧を検出する検出装置が提供される。前記検出装置は、周波数推定部と、減圧判定部とを備える。前記周波数推定部は、前記タイヤの時系列の回転速度信号に基づいて、前記タイヤの第1共振周波数を表す第1指標を推定するとともに、前記第1共振周波数よりも高い前記タイヤの第2共振周波数を表す第2指標を推定する。前記減圧判定部は、前記第1指標及び前記第2指標に基づいて、前記タイヤが減圧しているか否かを判定する。【選択図】図3


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    Titel :

    DETECTION DEVICE OF REDUCED PRESSURE OF TIRE


    Weitere Titelangaben:

    タイヤの減圧の検出装置


    Beteiligte:
    YAMASHITA KENTO (Autor:in) / WADA MITSUHIRO (Autor:in)

    Erscheinungsdatum :

    2018-06-28


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE



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