Penerima Gelombang ELF berbasis Op-Amp untuk Pengolahan Akuisisi Data Gempa Bumi

ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Pub Date : 2021-07-09 DOI:10.26760/ELKOMIKA.V9I3.592

Rheyuniarto Sahlendar Asthan, Dean Corio, M. Ulfah, U. A. Ramadhani, Achmad Munir

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引用次数: 1

Abstract

ABSTRAKPenelitian ini membahas mengenai penerima gelombang extremely low frequency (ELF) untuk pengolahan akuisisi data gempa bumi. Penerima ELF dirancang menggunakan operational amplifier (Op-Amp) dengan masukan takmembalik. Sinyal yang diterima oleh antena diteruskan ke penerima ELF yang terdiri dari preamplifier dan amplifier untuk proses penguatan, serta filter aktif orde 2 untuk menekan sinyal di atas frekuensi cut-off sebesar 50Hz. Karakterisasi penerima ELF dilakukan dengan mengamati perbandingan level tegangan sinyal keluaran terhadap level tegangan sinyal masukan, sensitivitas, serta bentuk sinyal keluaran dari penerima ELF dalam domain waktu. Hasil simulasi menunjukkan bahwa penerima ELF menghasilkan penguatan sebesar 60,8dB dengan sensitifitas tinggi untuk level sinyal masukan di bawah -30dB yang mampu memenuhi level sinyal untuk pengolahan akuisisi data.Kata kunci: extremely low frequency, penerima ELF, operational amplifier, filter aktif, gempa bumi ABSTRACTThis research presents extremely low frequency (ELF) receiver for earthquake data acquisition processing. The ELF receiver is designed based on non-inverting operational amplifier (Op-Amp). The signal received by the antenna is fed into ELF receiver which consists of preamplifier and amplifier for amplification, and second order active filter to suppress unwanted signal above the cut-off frequency of 50Hz. Characterization of ELF receiver is performed by observing the comparison of the level output signal to level input signal, sensitivity, and ELF receiver signal output in time domain. The simulation results show that the ELF receiver has gain of 60.8dB with high sensitivity for low level input signals below -30dB that is able to meet signal level for data acquisition processing.Keywords: extremely low frequency, ELF receiver, operational amplifier, active filter, earthquake

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用于收集地震数据的精灵波接收器

本研究涉及处理地震数据采集的极端低波接收器。精灵接收器的设计是使用一种带有反向输入的操作放大器。天线接收到的信号被转发给精灵接收器，该接收器由增强器和放大器组成，以及用于放大进程的活动过滤器2，以抑制信号的停止频率为50Hz。精灵接收器的特征是观察输出信号的电压水平与输入信号、灵敏度和精灵传导信号在时间域内的输出水平的比较。模拟结果显示，精灵受体产生的强度为60.8db，对30分贝以下的输入信号水平具有高度的敏感性，这将与数据采集处理的信号水平相匹配。关键词:极端低频，精灵接收器，操作放大器，主动过滤器，ABSTRACTThis research呈现极端低频数据处理程序的接收器。精灵接收器的设计基于非逆变功能放大器。天线接收的信号集中在精灵接收器上，这些接收器的作用是预先放大和放大器，以及二阶活动过滤器，以抑制50Hz的频率。精灵接收器的特点是观察信号输出水平到输入率、灵敏度和精灵接收器在时间域内输出水平的对应。精灵接收器的模拟显示，精灵接收器的输入速率为低6.8分贝，对低信号输入率非常敏感极端低频，精灵接收器，操作放大器，活动过滤器，地震

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ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika

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