Rancang Bangun Intrumentasi Pengukur Kecepatan Arus Air Berdasarkan Sistem Kerja Baling-Baling
DOI:
https://doi.org/10.26418/pf.v1i3.5143Abstract
Telah dirancang dan dibuat alat pengukur kecepatan arus air yang relatif murah dan portabel. Alat ini terdiri dari bagian mekanik dan bagian elektronik. Alat ini mengunakan mikrokontroler ATMega8535, Photodioda dan Baling-baling. Prinsip kerja alat ini adalah mencacah jumlah putaran baling-baling yang kemudian dikonversi menjadi kecepatan arus air. Mikrokontroler ATMega8535 digunakan sebagai pencacah sinyal digital, pengontrol waktu pengambilan data dan pengontrol tampilan LCD. Hasil pengukuran ditampilkan pada layar LCD. Hasil pengujian alat menunjukan bahwa alat dapat berkerja dengan baik pada kecepatan 0,278 (meter/detik) sampai 3,152 (meter/detik). Pengujian alat dilakukan dengan cara mengukur arus air sungai dan membandingkannya dengan alat ukur standar (Flow Meter Conversion Kit Model 001). Alat ini memiliki nilai RMSE (Root Mean Square Error) sebesar 0,345 %.
Kata Kunci : Kecepatan Arus Air, Mikrokontroler ATM8535, Photodioda
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Date: 24-05-2023
Prisma Fisika
Email: prismafisika@physics.untan.ac.id
