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    MONITORING DEVICE OF STATE OF VEHICLE DURING TRAVELING
    1.
    发明公开
    MONITORING DEVICE OF STATE OF VEHICLE DURING TRAVELING 审中-公开

    公开(公告)号：EP4446139A1

    公开(公告)日：2024-10-16

    申请号：EP24164744.5

    申请日：2024-03-20

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： YAMASHITA, Kento ,  MURAKAMI, Keiichi

    IPC分类号： B60C23/06

    摘要： A monitoring device includes an acquisition unit, a filtering unit, an estimation unit, and a correction unit. The acquisition unit acquires time series data representing rotation information of a tire mounted on a vehicle during traveling of the vehicle. The filtering unit causes the time series data to pass through a variable band-pass filter to extract a frequency component in a predetermined frequency band near a resonance frequency of the tire from the time series data or causes the time series data to pass through a variable band-stop filter to remove the frequency component in the predetermined frequency band near the resonance frequency. The estimation unit estimates the resonance frequency of the tire based on the frequency component to derive an estimated resonance frequency. The correction unit corrects the estimated resonance frequency based on an area of a spectrum of the time series data in the predetermined frequency band.

    APPARATUS FOR DETECTING DECREASED PRESSURE OF TIRE
    2.
    发明公开
    APPARATUS FOR DETECTING DECREASED PRESSURE OF TIRE 审中-公开

    公开(公告)号：EP4424529A1

    公开(公告)日：2024-09-04

    申请号：EP24155735.4

    申请日：2024-02-05

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： SEKOGUCHI, Kazuki ,  MASUDA, Hidetaka

    IPC分类号： B60C23/06

    CPC分类号： B60C23/061

    摘要： An apparatus for detecting decreased pressure of tire includes a speed acquisition unit, an outside air temperature acquisition unit, a decreased pressure index calculation unit, a correction unit, and a decreased pressure determination unit. The speed acquisition unit acquires rotation speeds of a plurality of tires mounted to a vehicle. The outside air temperature acquisition unit acquires an external temperature around the vehicle. The decreased pressure index calculation unit calculates at least one decreased pressure index as an index for comparing the rotation speeds of the plurality of tires. The correction unit calculates a corrected decreased pressure index corrected in consideration of influence of the external temperature, or calculates a corrected decreased pressure threshold value corrected in consideration of influence of the external temperature. The decreased pressure determination unit determines whether or not at least one tire among the plurality of tires has a decreased pressure.

    ESTIMATING A TRANSIENT TIRE LOAD
    10.
    发明公开
    ESTIMATING A TRANSIENT TIRE LOAD 审中-公开

    公开(公告)号：EP4272979A1

    公开(公告)日：2023-11-08

    申请号：EP22172049.3

    申请日：2022-05-06

    申请人： Rimac Technology LLC

    发明人： JURIC, Demijan

    IPC分类号： B60C23/06 ,  G01G19/08 ,  G01G19/12

    摘要： A computer-implemented method for estimating a value of a given transient tire load of at least one wheel of a vehicle at a given time frame, the method comprising the steps of: acquiring a value of a given equilibrium tire load of the at least one wheel of the vehicle at the given time frame; obtaining at least one value of the equilibrium tire load of the at least one wheel of the vehicle at at least one time frame before the given time frame; obtaining at least one value of the transient tire load of the at least one wheel of the vehicle at the at least one time frame before the given time frame; and determining the value of the given transient tire load of the at least one wheel of the vehicle.