SENSOR GETARAN DUA DIMENSI (2-D) BERBASIS KOIL DATAR UNTUK MENGUKUR FREKUENSI GETARAN GEMPA DI WILAYAH LOMBOK NUSA TENGGARA BARAT

Authors

  • Islahudin Islahudin Universitas Muhammadiyah Mataram
  • M Firman Ramadhan Universitas Muhammadiyah Mataram

DOI:

https://doi.org/10.31764/paedagoria.v6i1.103

Keywords:

koil datar, sensor getaran, dua dimensi (2-D), gempa

Abstract

Pada penelitian ini telah dirancang aplikasi koil datar sebagai sensor getaran untuk deteksi dini gempa. Koil datar adalah lilitan kawat yang sangat tipis dan bertindak sebagai induktor. Koil datar ini bersama dengan kapasitor membangun sebuah osilator yang menghasilkan frekuensi bergantung pada nilai induktansi dan kapasitansi. Osilator ini dinamakan osilator LC. Induktansi koil datar bergantung pada jarak benda logam di depan koil datar. Jika induktansi berubah, frekuensi akan berubah juga. Frekuensi dapat dirubah ke dalam bentuk tegangan untuk merepresentasikan jarak. Efek ini kemudian diterapkan pada frekuensi rendah menggunakan bandul pada rumahan sensor. Berdasarkanpenelitian, sensor getaran untuk mendeteksi gempa bumi sudah dirancang serta masih dalam proses pengujian dan kalibrasi. Sensor getaran yang sudah dibuat adalah sensor koil datar arah x da arah y. Frekuensi getaran yang sudah bisa diukur dalam arah x adalah 0,468 Hz. Nilai ini hampir sama dengan frekuensi sumber getaran sebesar 0,46 Hz. Adapun frekuensi yang getaran yang sudah bisa diukur dalam arah y adalah 0,55 Hz  dan nilai ini hampir sama dengan frekuensi sumber getaran sebesar 0,5 Hz.

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Published

2018-02-01

Issue

Vol. 6 No. 1 (2015): April

Section

Articles

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