Rancang Bangun Sistem Pengukuran Diameter Butiran Air Menggunakan Fotodioda Array dan Transceiver nRF24L01+

Authors

  • Awaluddin Awaluddin Jurusan Fisika, FMIPA, Universitas Andalas, Limau Manis, Padang, 25163
  • Harmadi Harmadi Jurusan Fisika, FMIPA, Universitas Andalas, Limau Manis, Padang, 25163
  • Marzuki Marzuki Jurusan Fisika, FMIPA, Universitas Andalas, Limau Manis, Padang, 25163

DOI:

https://doi.org/10.25077/jif.11.2.88-94.2019

Abstract

Telah dilakukan rancang bangun sistem pengukuran diameter butiran air menggunakan fotodioda array dan transceiver nRF24L01+. Sistem pengukuran diameter butiran air terdiri dari laser dioda, fotodioda array, mikrokontroler Arduino Uno R3 dan transceiver nRF24L01+. Pengukuran dilakukan saat butiran air yang berasal dari wadah, dengan variasi ukuran diameter; 1 mm, 2 mm, dan 3 mm, melewati sinar laser dan ditangkap oleh fotodioda array. Fotodioda array mengubah cahaya menjadi sinyal listrik dalam bentuk tegangan keluaran dan diolah menggunakan mikrokontroler Arduino Uno R3. Data yang dihasilkan dikirim secara telemetri nirkabel dengan menggunakan transceiver nRF24L01+ dan ditampilkan pada PC dan LCD dalam bentuk hasil pengukuran. Karakterisasi sensor fotodioda array menghasilkan nilai koefisien determinasi (R2) sebesar 0,997 dan nilai fungsi transfer yaitu 21,975e–0,004x yang dimasukkan ke dalam program. Hasil pengujian memperlihatkan semakin rendah tegangan menandakan diameter butiran air hujan semakin besar. Hasil pengukuran diameter butiran air memiliki nilai error rata-rata 0,66. Sistem memiliki jarak pengiriman maksimum 1000 m tanpa penghalang dan jarak pengiriman minimum 550 m dengan penghalang.

Kata kunci: fotodioda array, pengukuran butiran air, transceiver nRF24L01+

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Published

2019-09-23

How to Cite

Awaluddin, A., Harmadi, H., & Marzuki, M. (2019). Rancang Bangun Sistem Pengukuran Diameter Butiran Air Menggunakan Fotodioda Array dan Transceiver nRF24L01+. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, 11(2), 88–94. https://doi.org/10.25077/jif.11.2.88-94.2019

Issue

Vol. 11 No. 2 (2019): September 2019

Section

Research Article

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