To provide a technique capable of accurately predicting a remaining life of an object while suppressing power consumption of a system.SOLUTION: A remaining lifetime estimating method includes: a conversion step of converting, for each predetermined time interval, total elapsed time of an airbag 10 from beginning of first use into total elapsed time Tb of the airbag 10 from beginning of first use at predetermined temperature t according to a formula based on Arrhenius law; a remaining use time calculation step of calculating remaining use time Tx of the airbag 10 by subtracting the total elapsed time Tb from lifetime Ta of a target object at the predetermined temperature t; a correction step of performing correction to increase the remaining use time Tx based on a predetermined value Tc proportional to power supply time to a vehicle 1; a determination step of determining whether or not the remaining use time Tx corrected by the correction step is equal to or less than the predetermined value; and a notification step of issuing notification regarding lifetime of the airbag 10. When it is determined that the remaining use time is equal to or less than the predetermined value.SELECTED DRAWING: Figure 3

    【課題】システムの消費電力を抑制しつつ、対象物の残存寿命を精度良く予測できる技術を提供すること。【解決手段】所定時間ごとに、エアバッグ10の初回の使用開始時からの総経過時間を、アレニウスの法則に基づく演算式に従って所定温度tにおけるエアバッグ10の初回の使用開始時からの総経過時間Tbに変換する変換ステップと、所定温度tにおける対象物の寿命時間Taから総経過時間Tbを減算することにより、エアバッグ10の残存使用時間Txを算出する残存使用時間算出ステップと、車両1への通電時間に比例する所定値Tcに基づいて、残存使用時間Txを増やす補正をする補正ステップと、補正ステップにより補正された残存使用時間Txが所定値以下であるか否かを判定する判定ステップと、所定値以下であると判定されたときに、エアバッグ10の寿命について報知する報知ステップと、を有する、残存寿命予測方法である。【選択図】図3


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    Title :

    REMAINING LIFETIME ESTIMATING METHOD, REMAINING LIFETIME ESTIMATING SYSTEM, AND VEHICLE


    Additional title:

    残存寿命予測方法、残存寿命予測システム及び車両


    Contributors:

    Publication date :

    2022-09-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES




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