Purwarupa Monitoring Kecepatan Aliran Air dan Ketinggian Air Melalui Android

CIPTANINGRUM PUTRI G, Isnan Nur Rifa'i, S.Si, M.Eng.

2016 | Tugas Akhir | D3 ELEKTRONIKA DAN INSTRUMENTASI SV

Banjir merupakan peristiwa terendamnya daratan karena volume air yang meningkat. Bencana ini sering terjadi di Indonesia terutama pada musim penghujan dengan curah hujan yang sangat tinggi. Dalam jangka waktu tertentu hujan mengakibatkan aliran air di permukaan bumi (run off). Volume run off dan kecepatan aliran air tidak sebanding dengan besarnya drainase dan kecepatan aliran air menuju sungai. Untuk dapat mengatasi permasalahan tersebut diperlukan suatu alat atau aplikasi untuk memonitor gejala awal terjadinya banjir menggunakan mikrokontroller arduino. Mikrokontroller Arduino Mega 2560 dihubungkan dengan sensor flow water dan sensor ultrasonik yang dapat mendeteksi kondisi sungai. Data hasil pembacaan sensor-sensor tersebut akan dikirim ke smartphone Android menggunakan komunikasi serial bluetooth dan ditampilkan pada LCD. Data hasil dari aplikasi ini berupa besar kecepatan aliran air, ketinggian air dan indikasi kondisi sungai seperti kondisi aman, waspada, dan bahaya. Selain itu, memberi output berupa peringatan otomatis berupa buzzer ketika ketinggian air telah mencapai batas kondisi bahaya dan kondisi waspada. Hasil pengujian menunjukkan bahwa sensor ultrasonik memiliki tingkat keakuratan yang masih kurang dan memiliki nilai toleransi kalibrasi sekitar 2-3 Cm, sedangkan sensor flow water memiliki nilai error dalam pembacaan kecepatan aliran air rata-rata 0,635 L/Min. Dalam pengujian, dipengaruhi beberapa faktor antara lain kedalaman sungai, kondisi cuaca, kondisi sungai, dan pengaruh angin.

Flood refers to an event of submergence of land due to the increasing water volume. This disaster frequently occurs in Indonesia, particularly in rainy season with the very high rainfall. In certain period of time, the rain has led water flow to the earth surface (run off). The volume of run-off and the rate of water flow are not in proportion to the size of drainage and the rate of water flow to river. To cope with this problem, it requires a tool or an application to monitor the initial indication of the occurrence of flood using Arduino Microcontroller. Arduino Microcontroller of Mega 2560 was connected to the sensor of water flow and the ultrasonic sensor that can detect the condition of river. The data of the result of reading the sensors were sent to smartphone Android using the communication of Bluetooth series and displayed on LCD. Data of the result of application was in the form of the rate of water flow, water height and the indication of the river condition such as the safety condition, alertness and danger. In addition, an output was given in the form of the automatic warning of buzzer when the height of water has reached the harmful condition and alertness condition, The result of the test showed that the ultrasonic sensor had the level of accuracy that was still insufficient and had the value of calibration tolerance about 2-3 Cm. Whereas, the sensor of water flow had the error score in reading the mean flow water in the rate of 0,635 L/Min on average. In the test, there were a number of factors including the depth of river, weather condition, river condition and wind.

Kata Kunci : Arduino Mega 2560, Sensor Ultrasonik HY-SRF05, Sensor Flow Water G1/2, Buzzer, LED, LCD (Liquid Crystal Display), Bluetooth, Smartphone Android