To provide a magnetic field estimation device capable of estimating a magnetic field at higher accuracy without carrying out additional measurement of an outside magnetic field, a demagnetization system, and a magnetic field estimation method.SOLUTION: A magnetic field estimation device applied to a structural body 1 having a plurality of magnetic sensors 2 includes: a division unit for dividing a three-dimensional structural model of the structural body 1 into a plurality of areas on the basis of positions of the plurality of magnetic sensors 2; a setting unit for setting a uniform magnetic state for every area; an estimation unit for estimating a magnetic field generated by the structural body 1 on the basis of the magnetic state of each area set in the setting unit and the three-dimensional structural model; and a division update unit for increasing the number of areas by further dividing at least one area which is divided by the division unit when a difference between a vector value or the strength in the magnetic field in the position of the magnetic sensor 2 estimated by the estimation unit, and the vector value or the strength in the magnetic field measured by the magnetic sensor 2 arranged in the position is greater than a preset threshold.SELECTED DRAWING: Figure 1

    【課題】外部磁場の追加計測を行うことなく、より高精度に磁場を推定することのできる磁場推定装置、消磁システム、及び磁場推定方法を提供することを目的とする。【解決手段】複数の磁気センサ2を有する構造体1に適用される磁場推定装置であって、構造体1の3次元構造モデルを複数の磁気センサ2の位置に基づいて複数の領域に分割する分割部と、領域毎に一様な磁気状態を設定する設定部と、設定部で設定された各領域の磁気状態と3次元構造モデルとに基づいて、構造体1が発生させる磁場を推定する推定部と、推定部によって推定された磁気センサ2の位置における磁場のベクトル値もしくは強度と、位置に配置された磁気センサ2によって計測された磁場のベクトル値もしくは強度との差が予め設定した閾値以上である場合に、分割部によって分割された少なくとも一つの領域を更に分割し領域の数を増加させる分割更新部とを備える。【選択図】図1


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    Title :

    MAGNETIC FIELD ESTIMATION DEVICE, DEMAGNETIZATION SYSTEM, AND MAGNETIC FIELD ESTIMATION METHOD


    Additional title:

    磁場推定装置、消磁システム、及び磁場推定方法


    Contributors:

    Publication date :

    2019-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B63G OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS , Angriffs- oder Verteidigungsanordnungen auf Schiffen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01F MAGNETS , Magnete



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