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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) JURNAL NASIONAL TEKNIK ELEKTRO Journal of Information Technology and Computer Engineering Jurnal Amplifier: Jurnal Ilmiah Bidang Teknik Elektro dan Komputer Andalasian International Journal of Applied Science, Engineering, and Technology Andalas Journal of Electrical and Electronic Engineering Technology Jurnal Andalas: Rekayasa dan Penerapan Teknologi Jurnal Rekayasa elektrika
Melda Latif
Jurusan Teknik Elektro Universitas Andalas
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Other

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Pencegahan Kesalahan Alarm dalam Sistem Pendeteksi Dini Kebakan dan Pemadaman Berbasis Internet of Things Muharam, Mumuh; Latif, Melda; Baharuddin, Baharuddin; Richaflor, Ibnum
JITCE (Journal of Information Technology and Computer Engineering) Vol. 4 No. 02 (2020)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jitce.4.02.53-62.2020

Abstract

False alarm in fire detection can cause a huge loss. False alarm is generated by unwanted signal of smoke detector such as outdoor smoke or smoking. Therefore, it is designed a system that can reduce false alarm. The purposed system is built based on three components, those are sensors, actuators and data communication. Sensors are smoke, flame and camera sensor. Smoke sensor is used as the first thing to sense a signal from the system that warns the system there is a fire. Flame sensor and camera are used to confirm that a signal of fire whether false alarm or not. Internet of Things (IoT) is applied to control the system. The result show that the system is applicable.
Electromedical Device And Expert System for Early Detection of Hyperemesis Gravidarum Fitrilina, Fitrilina; Ganesha; Handayani, Yanolanda Suzantry; Surapati, Alex; Untari, Rahayu Trisetyowati; Laksono, Heru Dibyo; Latif, Melda
JURNAL NASIONAL TEKNIK ELEKTRO Vol 12, No 3: November 2023
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v12n3.1130.2023

Abstract

Hyperemesis Gravidarum (HG) is a pregnancy complication that is often overlooked as it is typically considered normal. If HG is not properly treated, nutrition will not be fulfilled which can negatively affect maternal and fetal health and even maternal and fetal death. The exact cause of HG is not identified, so there are no effective preventive methods. However early detection can help for prompt and appropriate treatment. Therefore, a monitoring system for pregnancy conditions was designed for HG early detection. This system employs the MPX5050 DP pressure sensor for measuring blood pressure, the MAX30100 for assessing maternal heart rate and oxygen saturation, the MAX4466 sensor for monitoring fetal heart rate, and an expert system using the certainty factor method to diagnose the probability of hyperemesis gravidarum. The expert system achieves an accuracy of 93.33%. In comparison to the aneroid sphygmomanometer, the designed sphygmomanometer reveals a mean difference of 3.5 mmHg for diastolic pressure, with a standard deviation below 8 mmHg for both systolic and diastolic pressures. The measurement of heart rate and oxygen saturation has a deviation of 1.8 % and 1.02 % respectively. These deviations align with the standards specified by the Ministry of Health for medical devices. For the fetal heart rate, the mean deviation is 3.4 bpm, and the measurement error is 2.38%. Thus, this system can be utilized to monitor pregnancy conditions, enabling the early detection of hyperemesis gravidarum
Sosialisasi dan Penguatan Pemahaman PLTMH di Nagari Lakitan Tangah untuk Masyarakat Berkelanjutan Refki Budiman; Andi Pawawoi; Muhammad Imran Hamid; Melda Latif; Arif Shidiq Siregar; Aulia Rohim Safnil; Reco Perian
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 6 No. 1 (2026): Juni 2026
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v6i1.130

Abstract

Program pengabdian masyarakat ini bertujuan untuk meningkatkan pemahaman dan kesiapan masyarakat Nagari Lakitan Tangah dalam memanfaatkan potensi energi terbarukan melalui pembangunan Pembangkit Listrik Tenaga Mikrohidro (PLTMH). Kegiatan diawali dengan survei teknis untuk mengukur debit dan tinggi jatuh air di Air Terjun Palano, yang menghasilkan potensi daya sebesar 105 kW dan produksi energi tahunan sekitar 1,04 GWh. Berdasarkan analisis teknis dan finansial, proyek dinilai sangat layak dengan nilai Internal Rate of Return (IRR) sebesar 21,5%, Net Present Value (NPV) positif, serta periode pengembalian modal (Payback Period) hanya 6,2 tahun. Pemilihan turbin Crossflow direkomendasikan karena efisien pada variasi debit air dan mudah dipelihara. Selain manfaat teknis, kegiatan ini berdampak sosial-edukatif signifikan dengan meningkatkan kesadaran masyarakat terhadap energi terbarukan, memperkuat kemandirian energi desa, serta membuka peluang ekonomi lokal. Program ini diharapkan menjadi dasar pengembangan energi mandiri berkelanjutan di Nagari Lakitan Tangah dan wilayah sekitarnya.
The Review of ELC and STATCOM Role in Electrical Power Generation from Renewable Energy Sources Based Three-Phase Self-Excited Induction Generator Melda Latif; Refdinal Nazir; Krismadinata Krismadinata
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 2 (2026): July 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i2.354

Abstract

This paper reviews various control strategies employed in Electronic Load Controllers and Static Synchronous Compensators (STATCOMs) for renewable energy system (RES)-based Self-Excited Induction Generators (SEIGs), with particular emphasis on performance indicators such as voltage and frequency regulation, harmonic distortion mitigation, and dynamic response characteristics. The review was conducted using articles published in reputable scientific journals. A total of 52 articles were selected and analyzed based on predefined inclusion criteria. The findings indicate that the investigated control approaches range from conventional controllers, such as Proportional-Integral (PI) and Proportional-Integral-Derivative (PID) controllers, to intelligent control techniques, including Fuzzy Logic Controllers (FLCs) and Artificial Neural Networks (ANNs). Furthermore, hybrid control schemes, such as Fuzzy-PI controllers and optimization-assisted intelligent controllers (e.g., PI-PSO), have also been widely reported in the literature. The limitations of conventional PI/PID controllers, particularly their fixed gain parameters that are optimized for specific operating conditions, can be effectively addressed through intelligent control techniques. These advanced approaches provide improved adaptability, enhanced dynamic response, and superior harmonic compensation performance. As a result, the reported Total Harmonic Distortion values for both voltage and current are generally maintained within the limits specified by IEEE Standard 519, namely below 5% for both voltage THD and current THD.
Monoesters for transformer insulating liquid Abdul Rajab; Melda Latif; Muhammad Imran Hamid; Tesya Uldira Septiyeni
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 20, No 6: December 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v20i6.21870

Abstract

The development of low viscosity insulating liquids derived from natural esters is conducted in our laboratory. Nine monoesters, i.e., methyl myristate, ethyl myristate, isopropyl myristate, methyl palmitate, ethyl palmitate, isopropyl palmitate, methyl stearate, ethyl stearate, and isopropyl stearate were synthesized from alcohols and saturated fatty acids. Treatments were performed to reduce water and acid contents and improve the oxidation stability of the monoesters. Some fundamental properties, such as breakdown voltage, kinematic viscosity, density, water content, acidity, and oxidation stability, were tested before and after treatments. The results are evaluated based on the international electrotehnical commission (IEC) standard specifications for low-viscosity monoesters derived from natural esters, IEC 62770. Except for the water content, all other properties have good compliance with the standard. The treatments reduced the water content significantly, but the values are still slightly higher than that specified by the standard.
Co-Authors . Darwison Abdul Rajab Ahmad Ahmad Amirul Luthfi Andi Pawawoi Anugrah Valdesio Arif Dwi Fajri Arif Shidiq Siregar Aulia . Aulia Rohim Safnil Baharuddin Baharuddin Eka Fitrianto Farizi, AL Fitrilina, Fitrilina GANESHA Gunawan, Eko Amri Gusriwandi Gusriwandi Hamdi Reza Handayani, Yanolanda Suzantry Krismadinata Krismadinata Laksono, Heru Dibyo Mahendri Saputra Mayang Safira Muhammad Imran Hamid Mumuh Muharam Novizon, Novizon Nuri Hayati Paskalina Aprila Tiy Pinto Anugrah Purwoko, Agus Reco Perian Refdinal Nazir Refki Budiman Reri Afrianita Reza, Hamdi Richaflor, Ibnum Saputra, Mahendri Surapati, Alex Syafrizal, Rifky Syukri Yunus Tesya Uldira Septiyeni Ullya Mega Wahyuni Untari, Rahayu Trisetyowati Uyung Gatot Syafrawi Dinata Valdesio, Anugrah Waweru Njeri Yonggi Puriza Zaini, Zaini