Kuncoro, Dhiva Priananda (2020) Rancang Bangun Sistem Pengendalian Aliran Air, Asam, dan Basa Menggunakan Gate Valve Pada Plant Penyiram Tanah Otomatis Berbasis Raspberry Pi 3 B+. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Banyak cara mengatur bukaan valve sacara otomatis salah satunya adalah menggunakan elektrik, karena tidak memerlukan power yang besar. Faktor kesulitan terletak pada konversi bukaan valve dengan putaran motor dimana dalam tugas akhir kali ini digunakan valve dengan sistem bukaan penuh sebesar 90˚ dengan motor servo sebagai penggeraknya. Motor servo dipilih karena memiliki kelebihan dimana tidak memerlukan power yang besar, memiliki torsi yang besar, dan akurasi tinggi, tetapi motor servo juga memiliki kekurangan dimana harganya cukup mahal. Pada pelaksanaan tugas akhir ini motor servo dikontrol oleh raspberry pi 3b+dan dipasangkan pada valve untuk mengatur aliran pada setiap tangki. Metode yang digunakan untuk mengatur bukaan valve yaitu dengan memanipulasi lebar pulsa pada motor servo dan memberi input sesuai keadaan pada kelembaban dan pH tanah yang diwakili dengan angka 2-7 untuk mewakili lebar pulsa 1.5 ms – 1.75 ms. Hasil yang didapat adalah pergerakan valve terhadap nilai input pada motor servo dimana nilai input 7 didapat rata-rata 3.6˚, nilai 6 didapat rata –rata 20.8˚, nilai 5 didapat rata-rata 39˚, nilai 4 didapat rata–rata 59.2˚, nilai 3 didapat rata-rata 3.8˚, dan nilai 2 didapat rata-rata 95˚. Waktu yang dibutuhkan sistem untuk mencapai set point kelembaban dan pH adalah ±35 detik dengan nilai awal kelembaban 17% dan pH 3,3.
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There are many ways automatic open valves, one of which uses electricity, because it does not require a large force. The difficulty factor lies in the conversion of the valve opening with the replacement of the motor where in this final project a valve with a full opening system of 90˚ is used with the servo motor as the driving force. Servo motors were chosen because they have advantages where not much power is needed, have large torque, and high accuracy, but servo motors also have disadvantages where the price is quite affordable. In this final project, the servo motor is controlled by raspberry pi 3b + and mounted on a valve to be given to each tank. The method used to adjust the pulse width in the servo motor and provide input in accordance with the humidity and soil pH represented by the numbers 2-7 to form a pulse width of 1.5 ms - 1.75 ms. The results obtained are the movement of the valve to the input value on the servo motor while the input value of 7 obtained an average of 3.6˚, the value of 6 obtained an average of 20.8˚, the value of 5 obtained an average of 39˚, the value of 4 obtained an average of 59.2˚, a value of 3 obtained an average of 3.8 dan, and a value of 2 obtained an average of 95˚. The time needed for the system to reach the set point for humidity and pH is ± 35 seconds with an initial humidity value of 17% and a pH of 3.3.
| Item Type: | Thesis (Diploma) |
|---|---|
| Uncontrolled Keywords: | Motor servo, Valve, Raspberry Pi |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control. |
| Divisions: | Faculty of Vocational > Instrumentation Engineering |
| Depositing User: | Dhiva Priananda K |
| Date Deposited: | 17 Aug 2020 04:07 |
| Last Modified: | 13 Jun 2023 15:15 |
| URI: | http://repository.its.ac.id/id/eprint/78266 |
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