PROBLEM TO BE SOLVED: To transmit tire pressure information of a spare wheel to a tire pressure notification device while suppressing consumption of a battery.SOLUTION: When acceleration Gx detected by an acceleration sensor is larger than a traveling determination threshold value 5G, a transmission control section of a sensor unit transmits wheel information periodically (S13-S16). When the acceleration Gx is equal to or lower than the traveling determination threshold value 5G, the transmission control section accumulates points P set in accordance with the acceleration Gx in a preset set cycle (S18-S24). When a cumulative value of the points P accumulated within the set time is larger than a traveling performance determination threshold value 10, the wheel information is transmitted (S25-S28).SELECTED DRAWING: Figure 4

    【課題】電池消耗を抑えつつ、スペア輪のタイヤ空気圧情報についてもタイヤ空気圧報知装置に送信できるようにする。【解決手段】センサユニットの送信制御部は、加速度センサにより検出される加速度Gxが走行判定用閾値5Gよりも大きい場合に、車輪情報を定期的に送信させる(S13〜S16)。送信制御部は、加速度Gxが走行判定用閾値5G値以下となる場合に、加速度Gxに応じて設定されるポイントPを予め設定した設定周期で累積し(S18〜S24)、設定時間内に累積されたポイントPの累積値が走行実績判定用閾値10よりも大きい場合に車輪情報を送信させる(S25〜S28)。【選択図】図4


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    Title :

    TIRE PRESSURE SENSOR UNIT, TIRE PRESSURE NOTIFICATION DEVICE AND VEHICLE


    Additional title:

    タイヤ空気圧センサユニット、タイヤ空気圧報知装置、および、車両


    Contributors:
    TAKI YUJI (author)

    Publication date :

    2016-08-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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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