CD Skripsi

Desain dan pembuatan sensor vibrasi koil datar berbasis rangkaian phase detector dan fast fourier transform

---

This study discusses the design and realization of a spiral flat coil-based vibration sensor combined with a phase detector IC CD4046 circuit and Fast Fourier Transform (FFT) analysis. The sensor was made on an FR4 PCB substrate with a configuration of 20 turns, a distance between turns of 0.254 mm, and a diameter of 25.4 mm. Its working principle is based on changes in inductance due to the installation of a beryllium copper seismic mass above the coil, which triggers a shift in the resonance frequency of the LC circuit. The phase detector circuit is used to measure the phase difference of the output signal, while FFT is used to display the vibration frequency spectrum in more detail. The testing was conducted using a vibration source in the form of a speaker controlled by a function generator in the range of 1 Hz to 1 kHz. The measurement results show that the cantilever width greatly affects the sensitivity of the sensor. The 5 mm cantilever produced a resonance peak at 15 Hz with an amplitude of 0.865 V and a quality factor of 0.89. The 10 mm cantilever showed a peak at 32 Hz with an amplitude of 0.963 V and a quality factor of 0.83. Meanwhile, the 15 mm cantilever provided the best results with a peak at 62 Hz, an amplitude of 1.110 V, and a quality factor of 1.64. These findings confirm that variations in cantilever dimensions play an important role in determining sensor performance, especially in terms of selectivity and detection accuracy.

Keywords: Flat coil sensor, vibration, phase detector, FFT, resonance

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

2003113444

Penerbit

Pekanbaru : Universitas Riau FMIPA Fisika., 2025

Deskripsi Fisik

-

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

2003113444

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

FISIKA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Mutia

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar