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All Journal Transmisi: Jurnal Ilmiah Teknik Elektro JET (Journal of Electrical Technology) Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Rekayasa Material, Manufaktur & Energi Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Teknik Mesin, Industri, Elektro dan Informatika Jurnal Fokus Elektroda (Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Jurnal Sains dan Teknologi Jurnal Pengabdian Pada Masyarakat Eldimas Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Jurnal Polimesin SNTE
Mangopo, Dultudes
Universitas Cendrawasih
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Peralatan Pencegahan Kebakaran Akibat Kebocoran Tabung Gas Menggunakan Sensor MQ-135 Berbasis IoT (Internet of Things) Harahap, Partaonan; Rimbawati, Rimbawati; Evalina, Noorly; Mangopo, Dultudes
Seminar Nasional Teknik Elektro Vol. 4 No. 1 (2025): SNTE III
Publisher : Forum Pendidikan Tinggi Teknik Elektro Indonesia Pusat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46962/snte.25.107

Abstract

Perangkat pendeteksi kebocoran gas memiliki peran yang sangat penting dalam menjamin keselamatan serta mencegah terjadinya kecelakaan di lingkungan rumah tangga maupun industri. Kebocoran gas, khususnya dari tabung Liquefied Petroleum Gas (LPG), menimbulkan risiko serius seperti ledakan, bahaya kebakaran, serta ancaman bagi kesehatan manusia. Untuk mengatasi masalah tersebut, penelitian ini menyajikan rancangan dan implementasi sistem pendeteksi kebocoran gas berbasis Internet of Things (IoT) dengan memanfaatkan sensor MQ-135. Sensor MQ-135 mampu mendeteksi gas berbahaya serta penurunan kualitas udara dengan cara memantau variasi resistansi pada keluarannya. Sistem yang diusulkan mengintegrasikan NodeMCU ESP8266 sebagai pemroses data, buzzer dan indikator LED sebagai peringatan lokal, serta fitur notifikasi berbasis Telegram untuk pemantauan jarak jauh. Pengujian sistem dilakukan dalam kondisi ruangan tertutup maupun terbuka untuk mengevaluasi kecepatan respons dan keandalannya. Pada ruangan tertutup, rata-rata waktu deteksi adalah 44 detik, sedangkan di lingkungan terbuka waktu respons bervariasi dengan rata-rata 45 detik akibat pengaruh sirkulasi udara. Hasil penelitian juga menunjukkan bahwa proses kalibrasi antara keluaran sensor dengan grafik pada datasheet MQ-135 menghasilkan rata-rata galat sebesar 9,62%, dengan galat terkecil 0,93% dan terbesar 16%. Temuan ini menegaskan bahwa sistem cukup akurat dan responsif dalam mengidentifikasi kebocoran gas. Solusi berbasis IoT ini membuktikan potensinya dalam meningkatkan keselamatan rumah tangga maupun industri dengan memberikan deteksi real-time, peringatan dini, dan kemampuan pemantauan jarak jauh. Penelitian selanjutnya dapat difokuskan pada optimalisasi sistem, integrasi dengan katup pemutus gas otomatis, serta penerapan lebih luas pada aplikasi rumah pintar dan sistem keselamatan industri.
Harmonic Distortion Assessment of Nonlinear Medical Loads in a Hospital Distribution Network Using ETAP Simulation  Mangopo, Dultudes; Rimbawati; Harahap, Partaonan; Nurdiansyah
Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Vol 13 No 1 (2026): Jurnal Ecotipe, April 2026
Publisher : Jurusan Teknik Elektro, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jurnalecotipe.v13i1.4588

Abstract

The growing use of power-electronics-based medical equipment has significantly altered the load characteristics of hospital electrical distribution systems. As nonlinear devices increase, harmonic distortion becomes a critical power quality concern that may affect equipment reliability and operational safety. This study investigates harmonic behavior in a 20 kV/0.4 kV hospital distribution network through harmonic load flow simulation using ETAP software. Total Harmonic Distortion of Voltage (THDv) and Total Harmonic Distortion of Current (THDi) are evaluated at selected buses and at the Point of Common Coupling (PCC), with reference to IEEE Std. 519-2014. Simulation results indicate that two low-voltage buses supplying high-capacity medical equipment exhibit THDv values of 8.21% and 6.74%, exceeding the recommended 5% limit. The THDi at the PCC reaches 14.37%, surpassing the allowable limit for the calculated short-circuit ratio (Isc/IL = 8.43). Dominant harmonic components are identified at the 5th and 7th orders, confirming the influence of rectifier-based medical systems and UPS units. The findings demonstrate that nonlinear medical loads significantly contribute to harmonic propagation, increased branch losses, and voltage distortion. Appropriate mitigation strategies, including harmonic filtering and load configuration adjustments, are therefore essential to ensure compliance with power quality standards and to maintain reliable hospital operation.
Designing IoT-Based Brackish Water Desalination Equipment to Meet Drinking Water Needs in Coastal Areas Rimbawati - Rimbawati; Darwin Darwin; Rahmanda Syahputra; Almira Amir; Dultudes Mangopo
JET (Journal of Electrical Technology) Vol 11, No 1 (2026): EDISI FEBRUARI
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/jet.v11i1.13378

Abstract

Water is one of the main sources that are very important for the needs of living beings. Water that has too high salinity can cause harm if used for certain activities, for example, it is harmful to health when used as drinking water, causing crop failure for agriculture, corrosion of equipment and buildings made of metal elements. The process of treating brackish water into fresh water is known as desalination. Brackish water treatment can also be done by filtration method. Based on the above background to avoid risks that occur in the use of brackish water in daily life that does not meet the standards of clean water that is safe to use in general and always ensures that the water is still suitable for use, this study designed and built a solenoid valve control system as an automatic valve used for the desalination of ready-to-drink brackish water that is safe and suitable for use in daily life and also has access to monitoring uses the internet of things (IoT) in its operation, so that it can be optimal in monitoring the pH of water and tds in the water as well as the water capacity in the water tank storage in real time by using Arduino uno as a data processor and the esp8266 wifi module for a connection to the internet that will send data to the blynk application. In the design of this device, several sensors were used, such as: pH sensor, tds sensor, and ultrasonic sensor so that it has three outputs, namely water tank storage capacity, water tds value, and water pH placed in the water tank storage to determine the value of the final result in the process of processing brackish water into ready-to-drink water in this study. The results of the work test of this brackish water desalination control system succeeded in removing the color and odor in the water and were able to change the pH level in brackish water from 8.7 pH to 6.43 pH, but the filtered water still tasted salty, so this research still needs to be continued to achieve the standard of drinking water content
Co-Authors Allo Sarira Pongsapan Almira Amir Amiruddin, Arfis Aris Sampe Darwin Darwin David Mangallo Ekawati Margaretha Ohee Ekawati Margaretha Ohee Enos Tambing Evalina, Noorly Frans Robert Bethony Harahap, Partaonan Joni Koedoes, Y.A. Lefaan, Yosef M. Ohee, Ekawati M. Ohee Marthen Liga Membala, Semuel Boron Nurdiansyah Oktavianus Kati Pagiling, luther Patabang, Djuarensi Pither Palamba Purnomo, Bayu Rahmanda Syahputra Rahmatullah Rahmatullah Ranteallo, Obet Rimbawati Rimbawati Rimbawati - Rimbawati Rombe Allo Rosalina Revassy S.Sinaga, Afner Sampe, Aris Samuel Parlindungan Siregar Selyus Rantepulung Siregar, Munawar Alfansury Suparno Tanjung, Wira Agus Lexmana Thomas Pagasis Wuri O, Theresia Yafet Bontong Yakobus Kariongan