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ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika
Published by Institut Teknologi Nasional Bandung
ISSN : 23388323     EISSN : 24599638     DOI : -
Core Subject : Engineering,
Electrical & Electronics Engineering Engineering
Jurnal ELKOMIKA diterbitkan 3 (tiga) kali dalam satu tahun pada bulan Januari, Mei dan September. Jurnal ini berisi tulisan yang diangkat dari hasil penelitian dan kajian analisis di bidang ilmu pengetahuan dan teknologi, khususnya pada Teknik Energi Elektrik, Teknik Telekomunikasi, dan Teknik Elektronika.
Arjuna Subject : -
Articles 11 Documents
 1   2 
Search results for , issue "vol 14, no 3: published july 2026" : 11 Documents clear
Integration of Cameras and IoT for Parking Capacity Management Using the YOLOv8 Algorithm HAYADI HAMUDA; ANJAR SETIAWAN
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.405

Abstract

Parking management in the mosque environment still faces challenges because vehicles are not being monitored properly. This research develops a parking capacity monitoring system based on cameras and the Internet of Things (IoT) using the YOLOv8 algorithm to automatically detect vehicles. The system is built with Python and digital image processing to detect vehicles entering and exiting. Parking capacity information is displayed in real-time thru a 20x4 I2C LCD and a web interface, and is stored in the Firebase Realtime Database. Testing using the black-box method shows that the system runs well, while the System Usability Scale (SUS) evaluation received a score of 90, categorized as very good. The vehicle detection results achieved an accuracy of 66.67% under optimal lighting conditions. This system is expected to help make mosque parking management more effective and efficient.
Master-Slave Synchronization in Off-Grid Solar Microgrids: Genset and Inverter Configurations IGNATIUS RIYADI MARDIYANTO; MUSRINAH MUSRINAH; SRI PARYANTO MURSYID; SRI UTAMI; WILDAN ARASSID; RIDWAN NURDIN; AGOENG HARJATMO RAHARDJO; TJATUR UDJIANTO; APIP PUDIN
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.274

Abstract

The research analyzes the synchronization performance of off-grid solar AC microgrids by comparing genset-based and inverter-based master-slave configurations. Stability and power quality evaluations were conducted through MATLAB/Simulink simulations and experimental validation. Test results show that the genset-master configuration produces stable synchronization (220V/50Hz), while the inverter-master configuration experiences initial voltage instability. However, by optimizing the power capacity ratio between the master and slave units to 10:1 and implementing a properly designed PWM modulation, the system successfully achieves stable operation. An IoT-based monitoring system using ESP32 and PZEM-004T sensors provides real-time data to validate these findings, confirming that while the inverter-based master configuration is feasible, precise design parameters are required to ensure reliable synchronization
Design of Microstrip-Embedded Building Structure Antenna for Smart City IoT Networks LOMPO RAMOS EMAKARIM; NURMAYANTI ZAIN; FARHAN REZKI ARIFIN; MUH. IRHAM M; UMMU KHALSUM; ABDUL HAKIM UDIN
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.347

Abstract

Building-integrated antenna technology offers a promising approach for IoT deployment in smart city. This study proposes a conceptual framework for microstrip antenna embedded within metal structural elements. It aims to analyze the electromagnetic behavior and performance of these antennas for IoT applications. The methodology combines analytical modeling with HFSS simulations to evaluate key parameters including return loss, VSWR, gain, and radiation patterns within the 700 MHz sub-GHz IoT bands. Simulation results demonstrate that the concrete column structure supports effective antenna operation, achieving a return loss of -17.15 dB and a VSWR of 1.32. Despite the inherent attenuation, the antenna maintains a positive realized gain of 1.44 dBi and a sufficient broadside radiation pattern. The study concludes that such embedded antennas offer a viable solution for smart city IoT infrastructure.
Subject Index and Author Index - INDEX -
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.%p

Abstract

Subject Index and Author Index
Comparative Analysis of YOLOv8 and YOLOv11 for Wildlife Detection in Natural Habitats FELIX CORPUTTY; AHMAD SULTHON JAUHARI; DARIELE ZEBADA SANUWU GEA; IVAN FEBRIANTO LALO; RIFKI RAHMAN NUR IKHSAN; ADE ADITYA RAMADHA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.288

Abstract

Wildlife monitoring in natural habitats remains difficult due to occlusion, camouflage, and varying illumination, which limit the performance of conventional object detection systems. Although recent YOLO-based models have shown strong potential, systematic comparisons between newer architectures in real ecological environments are still limited. This study evaluates YOLOv8 and YOLOv11 using 6,165 images from 14 wildlife classes collected at Taman Buru Gunung Masigit Kareumbi, with data augmentation applied to improve robustness. Performance is evaluated using a quantitative comparative approach based on precision, recall, mAP 0.5, and mAP 0.5:0.95. The results indicate that YOLOv11 achieves higher detection accuracy with an mAP 0.5:0.95 of 0.894.
An HHO-Optimized LSTM Framework for Predicting Adverse Effects Associated with Reproductive and Breast Disorders ANGEL METANOSA AFINDA; IGA NARENDRA PRAMAWIJAYA; FAUZAN FIRDAUS
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.358

Abstract

Reproductive toxicity prediction is a major challenge in drug development as side effects are often difficult to detect early. SMILES representations provide a compact sequential format suitable for deep learning. This study proposes an HHO-optimized LSTM model to predict reproductive and breast-related side effects. Four architectural schemes were evaluated including L (LSTM only), CL (Convolution + LSTM), LD (LSTM + Dense), and CLD (Convolution + LSTM + Dense). Results show that the tuned L scheme achieved the best performance with accuracy increasing from 0.6304 to 0.6739 and F1-score from 0.6792 to 0.7097. These findings highlight the effectiveness of metaheuristic optimization in computational toxicology modeling.
Performance Degradation Analysis of WLAN-Based Train-to-Ground Communication in Jakarta LRT ABRAHAM DHAYAN JONATHAN; ERNA SRI SUGESTI; BUDI PRASETYA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.303

Abstract

Operational disruptions on the Jakarta Light Rail Transit (LRT) during 2023–2025 indicate issues related to the signal loss between the train's communication system and surface radio devices. This research investigates the causes of signal loss through field testing, simulations, and theoretical analysis. Field testing showed a measured Received Signal Level (RSL) of approximately −79 dBm, while simulation results with Atoll and theoretical approaches ranged from −70 to −65 dBm and −50.62 to −66.18 dBm. Coverage analysis based on Atoll simulation revealed signal-free areas between adjacent Wireless Radio Units (WRUs), leading to a loss of connectivity for 1.12 second. The SINR values obtained, ranging from 2 to 8 dB, resulted in a BER of up to 10⁻² and a PER of 100%, as simulated using MATLAB. Doppler analysis confirms slow fading conditions, showing that the train's mobility factor has no effect.
Comparative Analysis of LCX and Bidirectional Antenna Performance in Jakarta MRT Telecommunication System INDRA FIRMANSYAH KOSWARA; ROBBY KURNIAWAN HARAHAP
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.374

Abstract

Telecommunication system reliability is critical to the operation of the Jakarta MRT, particularly for Train-to-Ground communication, CCTV transmission, and passenger information services. This study compares the performance of Leaky Coaxial Cable (LCX) and bidirectional antennas using MATLAB-based numerical simulation founded on a modified empirical propagation model, evaluated at frequencies of 5.2 GHz and 5.8 GHz over distances of 10–2000 m, with path loss, SNR, BER, and effective throughput as the analyzed parameters. At a distance of 2000 m and a frequency of 5.2 GHz, LCX yielded a path loss of 149.2255 dB, an SNR of -14.2586 dB, a BER of 0.3921, and a throughput of 6.0792 Mbps, outperforming the bidirectional antenna, which yielded a path loss of 156.8298 dB, an SNR of -21.8629 dB, a BER of 0.4546, and a throughput of 5.4543 Mbps.
Robust Battery Capacity Optimization of Off-Grid PV Systems for Dynamic Load Uncertainty YUSIRAN YUSIRAN; FAUZUN ATABIQ
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.320

Abstract

Off-grid solar power systems face fluctuating loads, complicating battery sizing. This study applies Monte Carlo simulation with the bootstrap method to optimize battery capacity for an 8.12 kWp PV system. Data include 113-day aggregated data and four high-resolution (5-minute) load profiles. 5,000 bootstrap scenarios were simulated over a capacity range of 16–48 kWh, targeting a probability of achieving a self sufficiency ratio (SSR) above 80%. Results indicate that a 30 kWh capacity achieves P(SSR > 80%) = 95.1%, meeting the target, while 32 kWh yields a marginal increase (95.8%). Diminishing return analysis shows that beyond 30–32 kWh, each additional 2 kWh improves probability by less than 0.5%. The technically optimal capacity is 30–32 kWh. Validation using high-resolution data confirms that a 16 kWh battery is safe for normal loads (lowest SOC = 27%) but proves insufficient under extreme conditions, with SOC dropping to 14%.
Design of a Compression Training System using a Mechanical Chest Response Model ERWANI MERRY SARTIKA; KALYA ICASIA; CHE-WEI LIN; FEBRIAN SETIAWAN
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.388

Abstract

Cardiopulmonary Resuscitation (CPR) is an emergency medical procedure performed on patients experiencing cardiac arrest. In this study, the mechanical response of the human chest during CPR compression is modeled using a spring–damper system. To better represent the actual chest response, the damper is regulated using a control system integrated into a CPR training model. The overall system design, including the human chest response model and the control system, utilizes a spring mechanism, an HC-SR04 ultrasonic sensor for measuring compression depth, LED indicators, and a buzzer as feedback components. A user interface (UI) is also developed to operate and monitor the entire system. The damping setpoint is designed with a variable viscosity constant that changes according to the chest compression depth, approximating the characteristics of the human chest response. A PID controller with gains , , and is implemented. The system produces an output response with a settling time of 5 seconds and a total error of 0.4457. The calculated compression force ranges from 320 to 420 N for compression depths of 4–5.5 cm.

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