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All Journal ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat
DECY NATALIANA
Institut Teknologi Nasional Bandung
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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Penerapan Teknik MPPT pada Modul Surya menggunakan Konverter DC-DC Topologi Synchronous Buck RATNA SUSANA; KEMAL ROSYIDI; DECY NATALIANA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 6, No 3 (2018): ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v6i3.328

Abstract

ABSTRAKKondisi sel surya sangat dipengaruhi oleh suhu dan intensitas matahari yang berperilaku dinamis, sehingga sel surya sulit mencapai titik tegangan dan arus maksimumnya. Sedangkan berdasarkan kurva karakteristik Daya-Tegangan sel surya, terdapat satu titik daya keluaran maksimum pada saat tertentu. Titik daya maksimum tersebut dapat dilacak menggunakan teknik Maximum Power Point Tracking (MPPT). Penerapan teknik MPPT pada modul surya menggunakan konverter DC-DC topologi synchronous buck yang dilakukan pada penelitian ini menggunakan metode perturb and observe. Pengaturan duty cycle PWM oleh Arduino Uno pada konverter DC-DC, akan menggeser titik daya modul surya agar selalu berada pada kondisi maksimum. Efisiensi konverter synchronous buck yang dihasilkan paling rendah adalah 43,73% pada duty cycle 10% dan tertinggi 95,6% pada duty cycle 100%. Hasil pengujian tanpa MPPT didapatkan daya keluaran modul surya tertinggi sebesar 16.49 Watt, dan pada saat yang sama ketika pengujian dilakukan dengan menerapkan teknik MPPT, maka daya keluaran modul surya yang terlacak adalah sebesar 23.60 Watt.Kata kunci: modul surya, MPPT, synchronous buck, perturb and observe.ABSTRACTThe condition of solar cells is very influenced by the temperature and the sun intensity which behaves dynamically, so that solar cells are difficult to reach the maximum point of  voltage and current. Whereas based on the Power-Voltage characteristics curve of  solar cells, there is a maximum output power point at any given moment. The maximum power point can be tracked using Maximum Power Point Tracking (MPPT) technique. Application of MPPT technique on solar module using DC-DC converter synchronous buck topology which is done in this research using perturb and observe method. PWM duty cycle setting by Arduino Uno in DC-DC converter, will shift the solar module power point to always be in maximum condition. The lowest synchronous buck converter efficiency is 43.73% in the 10% duty cycle and the highest is 95.6% in the 100% duty cycle. The test results without MPPT obtained the highest solar module output power of 16.49 Watt, and at the same time when the test is done by applying the MPPT technique, the tracked solar module output power is 23.60 Watt.Keywords: solar module, MPPT, synchronous buck, perturb and observe.
Sistem Monitoring Infus dengan Human Machine Interface secara Wireless DECY NATALIANA; FEBRIAN HADIATNA; YOSINNA MAULIDA
Jurnal Elkomika Vol 10, No 2 (2022): ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektr
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v10i2.470

Abstract

ABSTRAKPenelitian ini merealisasikan sebuah sistem monitoring infus yang bertujuan untuk memudahkan tenaga medis dengan menampilkan parameter-parameter dalam sebuah terapi infus intravena ke sebuah program Labview dengan menggunakan jaringan komunikasi UDP secara wireless. Labview dapat mengendalikan perangkat keras untuk mengatur jumlah tetesan/menit dan memonitoring parameter yang dikirim dari Wemos D1. Parameter yang dimonitoring diantaranya adalah jumlah tetesan, interval (ms), tetesan/menit, dan volume cairan infus. Sistem ini dilengkapi dengan alarm dan pemberhentian cairan infus secara otomatis sebagai peringatan ketika cairan infus terhenti dan bernilai < 50 ml. Waktu yang dibutuhkan untuk menghabiskan 450 ml cairan infus adalah 442-460 menit. Pada pengujian kestabilan sudut motor servo terhadap jumlah tetesan/menit, didapatkan hasil yang relatif konstan yaitu 18 tetesan/menit dan 21 tetesan/menit. Dengan begitu sistem monitoring infus dengan menggunakan Labview ini dapat dikatakan cukup layak digunakan sebagai sistem pengendali dan monitoring terapi infus intravena.Kata kunci: monitoring, infus, wemos D1, komunikasi UDP, labview ABSTRACTThis research is realizing an infusion monitoring system that aims to make medicians work easier by displaying parameters in an intravenous infusion therapy to a Labview program using a wireless UDP communication network. The hardware can be controlled by Labview to control drip/minute and monitor the parameters which sent by Wemos D1. Parameters are total drip, interval (in ms), drip/minute, dan infusion fluid volume. This system also designed with an alarm and automatic infusion fluid stopping to warn whether the infusion fluid stopped and valued < 50 ml. The infusion fluid spent 442 – 460 minutes to drained 450 ml of the bottle. From the stability testing of motor servo degree towards total drip/minute obtained a relative constant result, there are 18 drip/minute and 21 drip/minute. Therefore, this infusion monitoring system with Labview can be claimed as feasible enough to be a controlling and monitoring intravenous infusion therapy system.Keywords: monitoring, infusion, wemos D1, UDP communication, labview
Development of Prayer Rakaat Counter Using Piezoelectric Sensor Decy Nataliana; Dini Fauziah; Mellynda Riska Dianti
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 3, No 2 (2022): REKA ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v3i2.134-141

Abstract

In this study, a rakaat counter tool was designed and implemented to reduce mistakes in calculating the number of rakaat during prayer. The piezoelectric is used as sensor which is placed on the top of the prayer mat. Rakaat is calculated when piezoelectric has detected twice prostration. There are four modes in this system, namely fardhu prayer with seven segment display, fardhu prayer with  LED display, sunnah prayer with seven segment display, and sunnah prayer with  LED display.. There is an LED indicator when the rakaat is done which should be in accordance with the prayer time using RTC. The first test of this tool was carried out with piezoelectric calibration when pressed by the load and forehead. This was accomplished to determine when piezoelectric counting proceeded as piezoelectric was connected directly to the ADC of Arduino Uno. The second test was carried out by testing the tool to be used for 3 days in 5 fardhu prayers and 1 sunnah prayer. From the results of the testing it is proven that this tool works properly, and piezoelectric can be used as a replacement button as a tool for rakaat counter.
Co-Authors DINI FAUZIAH FEBRIAN HADIATNA KEMAL ROSYIDI Mellynda Riska Dianti RATNA SUSANA YOSINNA MAULIDA