EARTHQUAKE OBSERVATION DEVICE

PROBLEM TO BE SOLVED: To provide an earthquake observation device capable of precisely correcting signal delay in a signal processing circuit containing an analog filter.SOLUTION: An earthquake observation device includes: a detection unit for detecting vibration of an earthquake; an analog filter f...

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1. Verfasser: SETO YUKIO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an earthquake observation device capable of precisely correcting signal delay in a signal processing circuit containing an analog filter.SOLUTION: An earthquake observation device includes: a detection unit for detecting vibration of an earthquake; an analog filter for processing a signal output from the detection unit; and a calculation unit for performing calculation based on a processed signal output from the analog filter to output earthquake data. In the earthquake observation device, the calculation unit inputs a reference time signal containing information on time to be a reference and acquires an amount of signal delay in the analog filter to perform processing for correcting a delay portion that the amount of signal delay represents relative to the earthquake data.SELECTED DRAWING: Figure 1 【課題】アナログフィルタを含む信号処理回路での信号遅延を高精度に補正することができる地震観測装置を提供すること。【解決手段】本発明の地震観測装置は、地震の揺れを検知する検知部と、検知部から出力された信号を処理するアナログフィルタと、アナログフィルタから出力された処理後信号に基づき演算を行い、地震データを出力する演算部と、を備える。この地震観測装置において、演算部は、基準となる時刻の情報を含む基準時刻信号をアナログフィルタに入力してアナログフィルタでの信号遅延量を取得し、地震データに対して信号遅延量の示す遅延分を補正する処理を行う。【選択図】図1