ELECTRIC FIELD MEASUREMENT DEVICE AND ELECTRIC FIELD MEASUREMENT METHOD

To provide an electric field measurement device capable of improving the accuracy of electric field measurement, and an electric field measurement method.SOLUTION: The electric field measurement device measures an electric field corresponding to an inter-electrode voltage between two electrodes based on a voltage signal that is generated in the electric field antenna including two electrodes due to the electric field. The electric field measurement device includes an amplifier, a reference capacitive element, a GPIO that generates a step wave, and a microcomputer that processes a voltage signal. The microcomputer inputs a step wave to the amplifier and acquires a step response waveform via the GPIO and acquires an amplitude correction factor based on the step response waveform. The microcomputer corrects the voltage signal using the amplitude correction factor.SELECTED DRAWING: Figure 1 【課題】電界の測定精度を向上できる電界測定装置及び電界測定方法を提供する。【解決手段】電界測定装置は、電界に起因して２枚の電極を含む電界アンテナに生じる電圧信号に基づいて、２枚の電極間の電極間電圧に対応する電界を測定する。電界測定装置は、増幅器と、基準容量素子と、ステップ波を発生するＧＰＩＯと、電圧信号を処理するマイコンと、含む。マイコンは、ＧＰＩＯを用いて、ステップ波を増幅器に入力し、ステップ応答波形を取得し、ステップ応答波形に基づいて振幅補正係数を取得する。マイコンは、振幅補正係数を用いて電圧信号を補正する。【選択図】図１