Riadhi, Luthfi (2017) Sistem Pengaturan Oksigen Terlarut Menggunakan Metode Logika Fuzzy Berbasis Mikrokontroler Teensy Board. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Oksigen terlarut merupakan faktor kritis dalam budidaya pembenihan ikan dan menentukan tingkat keberhasilan dan kegagalan dalam proses meningkatkan kualitas serta kuantitas pembenihan ikan. Kadar oksigen terlarut yang rendah menyebabkan proses penguraian, reproduksi, dan pertumbuhan di dalam kolam tidak berjalan dengan baik sehingga menyebabkan kematian pada ikan.
Pada tugas akhir ini penulis membuat sistem yang dapat mengatur kadar oksigen terlarut dalam air dengan memanfaatkan sensor Dissolved Oxygen Meter AZ-8403. Output data analog dari sensor dikonversi oleh analog to digital converter (ADC) menjadi data digital yang mempresentasikan kadar oksigen terlarut di air. Presentase kadar oksigen dikendalikan dengan Fuzzy Logic di dalam mikrokontroler Teensy board. Ketika level oksigen di bawah nilai setting point maka aerator diaktifkan untuk menghasilkan kadar oksigen terlarut di dalam air.
Hasil pengujian yang dilakukan pada akuarium dengan panjang 27cm, lebar 16cm dan tinggi 17cm yang berisi ikan di dalamnya. didapatkan nilai rata – rata kesalahan pembacaan sensor oksigen terlarut sebesar 0.075%. Pengujian respon sistem dilakukan terhadap variasi setting point. Dari data yang diperoleh menunjukkan bahwa respon sistem membutuhkan waktu 1 menit untuk mencapai nilai setting point dengan pembacaan error positif dan aerator dimatikan ketika pembacaan error negatif, karena sistem tidak dilengkapi dengan proses reduksi oksigen. Sistem yang dirancang telah mampu untuk mengontrol oksigen terlarut dengan menggunakan metode logika fuzzy.
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Dissolved oxygen is a critical factor in the cultivation of fish hatcheries and determines the success rate and failure in the process of improving the quality and quantity of fish hatcheries. Low dissolved oxygen levels cause problems of process decomposition, reproduction, and growth in the pond does not work well resulting fish die.
In this final project author creates a system that can control dissolved oxygen levels in the water by utilizing sensor Dissolved Oxygen Meter AZ-8403. Analog output from sensor is converted by analog to digital converter (ADC) into digital data which presents dissolved oxygen levels in water. The percentage of oxygen levels controlled by fuzzy logic inside the teensy board microcontroller. When the oxygen levels are below the setting point, the aerator is activated to produce dissolved oxygen in the water.
The results test on the aquarium with 27cm length, 16cm wide, and 17cm high with fish in it obtained error value for the reading of dissolved oxygen sensor is 0.075%. The system was evaluated with different setting points. From the data shows that system response takes 1 minutes to reach setting point when the error value is positive and the aerator is stopped when the error value is negative, because the system does not have dissolved oxygen reduction process. The designed system has been able to control dissolved oxygen using fuzzy logic method.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 629.895 Ria s-1 |
| Uncontrolled Keywords: | Kontrol Logika Fuzzy, Oksigen terlarut, Teensy Board |
| Subjects: | T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7872 Electric current converters, Electric inverters. T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial. |
| Divisions: | Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Luthfi Riadhi |
| Date Deposited: | 11 Dec 2017 07:57 |
| Last Modified: | 06 Mar 2019 03:42 |
| URI: | http://repository.its.ac.id/id/eprint/45614 |
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