To stably measure the voltage level of an AC signal wave.SOLUTION: A voltage level measurement method includes: receiving an AC signal wave during a prescribed time T3 set by adding a frequency and an intermittent interval of the AC signal wave; acquiring a plurality of sample peak waveforms by converting at least a part of the received AC signal wave to a positive voltage waveform; extracting a plurality of peak waveforms with a prescribed voltage V1 or higher set so as to exclude a low-level noise; ranking the plurality of peak waveforms by a voltage amplitude; and calculating a voltage level on the basis of the plurality of peak waveforms within a prescribed order range set so as to exclude a high-level noise among the plurality of peak waveforms. This makes it possible to stably measure the voltage level of the AC signal wave because the voltage level can be calculated from the waveform from which a low-level noise such as a discharge waveform of a resonance capacitor and a high-level noise such as a specific switching pulse noise of an intermittent signal wave have been excluded even when these noise levels are included in the AC signal wave to be measured.SELECTED DRAWING: Figure 4

    【課題】交流信号波の電圧レベルを安定して測定する。【解決手段】電圧レベル測定方法は、交流信号波の周波数及び断続の間隔を加味して設定した所定時間T3の間に交流信号波を受信し、受信した交流信号波の少なくとも一部を正電圧波形へと変換して複数のサンプルピーク波形を取得し、複数のサンプルピーク波形から、低レベルのノイズが排除されるように設定した所定電圧V1以上の複数のピーク波形を抽出し、それら複数のピーク波形を電圧の大きさで順位付けし、複数のピーク波形のうち、高レベルのノイズが排除されるように設定した所定の順位範囲にある複数のピーク波形に基づいて、電圧レベルを算出する。これにより、測定対象の交流信号波に、共振コンデンサの放電波形などの低レベルノイズや、断続信号波に特有の切替パルスノイズなどの高レベルノイズが含まれていても、それらを排除した波形から電圧レベルを算出することができるため、交流信号波の電圧レベルを安定して測定することができる。【選択図】図4


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    Title :

    VOLTAGE LEVEL MEASUREMENT METHOD AND VOLTAGE LEVEL MEASUREMENT DEVICE


    Additional title:

    電圧レベル測定方法及び電圧レベル測定装置


    Contributors:

    Publication date :

    2024-09-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES



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