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Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta BSD City, Jl. Cisauk, Sampora, Cisauk Tangerang, Banten 15345 Tel. : +62 21 570 8826 Fax : +62 21 579 00573
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INDONESIA
JURNAL ELEKTRO
Published by Universitas Katolik Indonesia Atma Jaya
ISSN : 19799780     EISSN : 27464288     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering
Jurnal Elektro diterbitkan oleh Program Studi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta. Jurnal Elektro terbuka untuk penelitian dalam bidang-bidang teknik elektro seperti elektro arus kuat, elektronika, sistem kontrol atau kendali, telekomunikasi, komputer dan berbagai sub topik yang relevan terhadap perkembangan dan implementasi teknik elektro. Jurnal Elektro is published by the Electrical Engineering Bachelor Program, Faculty of Engineering, Atma Jaya Catholic University of Indonesia, Jakarta. Jurnal Elektro is open to research in the fields of electrical engineering such as power, electronics, control or control systems, telecommunications, computers and various sub-topics relevant to the development and implementation of electrical engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 148 Documents
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Studi Performa Panel Surya 100 WP Menggunakan Software Homer Di Universitas Pamulang simanjuntak, Refor mangasi; Triyanto, Aripin
Jurnal Elektro Vol 17 No 2 (2024): Jurnal Elektro: Oktober 2024
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v17i2.5884

Abstract

Studies on designs and systems for solar panels are currently continuing to be developed. One application is to design a Homer-based solar power generation system (PLTS) with a solar panel capacity of 100 Wp and analyze the system performance at different loads. This research was conducted to determine the amount of power that solar panels can produce, load consumption, and determine a suitable system configuration to meet electricity needs at different loads. The method used is design, determining parameters on the homer and creating a simulation with loading. The research results show that the amount of power that can be produced by solar panels is 75,2kWh/year and can meet electricity needs at different loads. It is hoped that this research can be a solution to optimize the use of solar energy on a small scale and support renewable energy programs in Indonesia.
PENGEMBANGAN PERANGKAT LUNAK UNTUK AKUISISI DATA KONSUMSI DAYA LISTRIK DARI POWER METER Ginting, Ignatius; Mulyadi, Melisa; Wijayanti, Linda; Manalu, Ferry Rippun Gideon
Jurnal Elektro Vol 17 No 2 (2024): Jurnal Elektro: Oktober 2024
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v17i2.6109

Abstract

Technological developments make it possible to monitor electricity consumption in real-time via the internet. The system developed uses a power meter to collect data, Python to process data and IoT connectivity via NodeMCU ESP8266 to send data to the internet. Python is used so that measurement data can be processed and presented in an easy-to-understand format. The test results show that electrical data measurements can be displayed with an error ranging from 0.04% -11.56%. This is because there is a delay from the time the power meter is measured until the data is displayed on ThingSpeak.
Frequency Extraction of Phonocardiogram Signal using Fourier Transform Bachri, Karel Octavianus
Jurnal Elektro Vol 17 No 2 (2024): Jurnal Elektro: Oktober 2024
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v17i2.6195

Abstract

This article presents Fourier Transform application to extract features of Phonocardiogram Signals into its frequency components. Data was taken from Physionet Dataset of Phonocardiogram which comprises of normal and abnormal heart condition. Raw data was preprocessed using time clipping of 2 seconds at certain area that contains less noise. A lowpass filter was applied to denoise the raw signals. Experiments show the PCG of normal hearts has a dominant frequency of 50Hz to 150Hz, with the subdominant frequencies of 450 Hz to 650 Hz. The subdominant frequency of the normal hearts sometimes show anomaly with more amplitude compared to the dominant frequency.
Evaluasi Evaluasi Material Waterway Terhadap Optimalisasi Daya PLTM Sion 2 X 5 MW Ratnasari, Asih; Kartawidjaja, Maria Angela
Jurnal Elektro Vol 18 No 2 (2025): Jurnal Elektro: October 2025
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v18i2.6451

Abstract

Mini-Hydro Power Plants (PLTM) are a renewable energy source with significant potential in Indonesia, yet their utilization remains under-utilized. This study aims to evaluate the effect of waterway materials on power efficiency at the Sion PLTM in North Sumatra. The goal is to optimize power efficiency by selecting waterway materials, as well as to provide knowledge and a template for future similar projects or studies. The evaluation was conducted by comparing three types of channel materials: Open Channel (open concrete channel), Glass Fiber Reinforced Plastic (GRP) pipe, and High-density Polyethylene (HDPE) pipe. This study measured and compared the head loss, power output, and power efficiency of each material. The calculations revealed the lowest head loss value for GRP pipe (1.17 m), followed by HDE pipe (2.34 m), and Open Channel (18.14 m). Meanwhile, the results of the comparison of the power produced, the highest power was obtained from GRP pipes (13,624.64 kW), followed by HDPE pipes (13,406.21 kW) and Open Channel (10,456.51 kW). In conclusion, GRP pipe material is the most optimal choice for improving power efficiency at PLTM Sion, supporting the enhanced utilization of renewable energy to replace fossil fuels.
Image Steganography: Digital Information Embedding Using Singular Value Decomposition and Simulation Software Aritonang, Suha; Uvi Desi Fatmawati
Jurnal Elektro Vol 18 No 2 (2025): Jurnal Elektro: October 2025
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v18i2.6869

Abstract

Singular Value Decomposition (SVD) is a matrix decomposition technique that is widely used in digital signal and image processing because of its ability to represent important information efficiently. This study aims to explore the use of the SVD method in the steganography and watermarking process of digital images as part of efforts to improve the security of multimedia information. The approach used involves inserting hidden data in the form of images, sentences, and paragraphs into the host image by modifying the singular value elements of the image matrix decomposition results. Various scenarios are simulated, including inserting RGB format watermarks into grayscale images and vice versa, by testing variations in the insertion parameter (α). Evaluation is carried out on the visual quality of the resulting image (imperceptibility), as well as the success rate of information extraction. The experimental results show that this method can insert information without causing significant visual distortion and still maintain high message extraction accuracy. This study confirms the effectiveness and flexibility of the SVD technique as an information insertion method that can be applied in digital copyright protection systems and visual data security. This method also has the potential to be integrated with other techniques in more complex and robust watermarking systems.
Prototipe Sistem Pemantauan Beban Jembatan menggunakan ESP32 dan Load Cell dengan Integrasi Blynk Lobwaer, Yohanes Evalex Cahyo; Budihardja Murtianta; Demas Sabatino
Jurnal Elektro Vol 18 No 2 (2025): Jurnal Elektro: October 2025
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v18i2.7203

Abstract

Infrastruktur seperti jembatan memiliki peran penting dalam konektivitas sebuah wilayah. Pemantauan pada jembatan dengan cara meninjau dan menjamin keselamatan pengguna jembatan serta mengantisipasi kerusakan struktural secara real-time berbasis Internet of Think. Perancangan sistem ini menggunakan load cell (sensor beban) untuk pengukuran beban, ADXL345 (sensor akselerometer) untuk pengukuran getaran, algoritma Fast Fourier Transform (FFT) untuk analisis sinyal getaran dalam domain frekuensi, aplikasi Blynk sebagai device pemantauan real-time. Pengujian dilakukan pada 2 kondisi permukaan jalan, yaitu jalan rusak dan jalan normal dengan menggunakan load cell dan ADXL345 dan menghasilkan rata-rata error beban rendah yang sesuai dengan datasheet, yaitu 0,01% dan dapat mendeteksi kondisi permukaan jalan dengan baik. Sistem ini mempermudah untuk pemantauan kondisi jembatan dan meningkatkan efisien anggaran dan waktu.
Performance Evaluation of Delay and Jitter in Optical Fiber Networks for Real-Time Multimedia Applications Sherila, Ayu Mika; Mulyadi, Melisa
Jurnal Elektro Vol 18 No 2 (2025): Jurnal Elektro: October 2025
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v18i2.7230

Abstract

The increasing reliance on real-time services such as VoIP and video streaming underscores the critical role of fiber optic networks as high-capacity communication backbones. While optical fibers offer substantial bandwidth, this alone does not ensure optimal Quality of Experience (QoE); network delay and jitter remain prominent challenges that can disrupt audio clarity and video continuity. This paper presents a detailed analysis of delay and jitter phenomena within fiber optic systems, particularly emphasizing Passive Optical Network (PON) topologies. It explores the underlying causes of performance degradation from physical-layer limitations to architectural inefficiencies and critically assesses current mitigation techniques implemented at both the network level (e.g., Quality of Service mechanisms) and application level (e.g., jitter buffering strategies). The main contribution of this work is the introduction of a novel "Cross-Layer Performance Optimization Framework," which addresses the disconnect between static QoS enforcement and reactive application adaptations. By fostering dynamic interaction between the network and application layers, this framework aims to enable predictive control mechanisms that better safeguard user experience. Ultimately, this approach offers a pathway to more robust and efficient delivery of real-time services over next-generation optical access networks.
Magnetic Tactile Display for Heartbeat Emulation Idris, Reuben Louis; Wijayanti, Linda; Mylyadi, Melisa; Octaviani, Sandra
Jurnal Elektro Vol 18 No 2 (2025): Jurnal Elektro: October 2025
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v18i2.7420

Abstract

Recently, humanoid robots have developed rapidly and have the potential to become a medical innovation, enhancing human interaction. The ability to realistically mimic a heartbeat is a key feature under development. This research aims to design a ferrofluid-based magnetic tactile display to represent a heartbeat in a humanoid robot. This system utilizes an electromagnetic matrix, ferrofluid, and an Arduino Uno as a magnetic flield controller. Electrocardiogram (ECG) data is used to represent various heart rate patterns, such as normal, bradycardia, and tachycardia. The development results indicate that the magnetic tactile display is capable of providing tactile feedback that corresponds to the heart rate pattern. This device mimics heartbeats based on ECG data by controlling ferrofluid through magnetic field settings, allowing users to feel it tactilely. Testing using an accelerometer sensor shows that the system can replicate normal heartbeats and bradycardia with a small average time difference of 4.52% and 3.93%, respectively. However, in tachycardia, there were difficulties in handling rapid interval changes, resulting in a time error of 31.67%. The results of this study indicate that magnetic tactile displays have great potential in physiological emulation in humanoid robots.

Page 15 of 15 | Total Record : 148

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