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I Gde Dharma Nugraha
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IJECBE Secretariat Electrical Engineering Department, Faculty of Engineering, Universitas Indonesia Kampus UI Depok, West Java, Indonesia 16424
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International Journal of Electrical, Computer, and Biomedical Engineering (IJECBE)
Published by Universitas Indonesia
ISSN : -     EISSN : 30265258     DOI : https://doi.org/10.62146/ijecbe.v2i1
Core Subject : Health, Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Materials Science & Nanotechnology Medicine & Pharmacology
The International Journal of Electrical, Computer, and Biomedical Engineering (IJECBE) is an international journal that is the bridge for publishing research results in electrical, computer, and biomedical engineering. The journal is published bi-annually by the Electrical Engineering Department, Faculty of Engineering, Universitas Indonesia. All papers will be blind-reviewed. Accepted papers will be available online (free access) The journal publishes original papers which cover but is not limited to Electronics and Nanoelectronicsc Nanoelectronics and nanophotonic devices; Nano and microelectromechanical systems (NEMS/MEMS); Nanomaterials; Quantum information and computation; Electronics circuits, systems on chips, RF electronics, and RFID; Imaging and sensing technologies; Innovative teaching and learning mechanism in nanotechnology education; Nanotechnologies for medical applications. Electrical Engineering Antennas, microwave, terahertz wave, photonics systems, and free-space optical communications; Broadband communications: RF wireless and fiber optics; Telecommunication Engineering; Power and energy, power electronics, renewable energy source, and system; Intelligent Robotics, autonomous vehicles systems, and advanced control systems; Computational Engineering. Computer Engineering Architecture, Compiler Optimization, and Embedded Systems; Networks, Distributed Systems, and Security; High-performance Computing; Human-Computer Interaction (HCI); Robotics and Artificial Intelligence; Software Engineering and Programming Language; Signal and Image Processing. Biomedical Engineering Cell and Tissue Engineering; Biomaterial; Biomedical Instrumentation; Medical Imaging.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 10 Documents
 1 
Search results for , issue "Vol. 2 No. 3 (2024)" : 10 Documents clear
Development of a Wearable Wide band Antenna in the Frequency Range of 2.4 GHz and 5.2 GHz Soares, Fidelio; Eko Tjipto Rahardjo
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.51

Abstract

This paper presents the optimization and design of a wearable multiband microstrip patch antenna using jeans as a substrate material for wireless communication applications. The proposed antenna operates at 2.4 GHz, 5.2 GHz, and 5.6 GHz frequency bands, which are essential for Wi-Fi and other wireless standards. The antenna design incorporates a rectangular slot and patch to achieve triple-band operation with a full ground plane, ensuring good isolation, directional radiation patterns, and high gain. Simulations and measurements were conducted using CST STUDIO SUITE software and standard laboratory equipment to validate the antenna's performance. Results demonstrate return losses greater than -10 dB with bandwidths of 72.5 MHz, 169.1 MHz, and 127.7 MHz for each band, respectively. The antenna achieves gain values of 0.886 dBi, 6.38 dBi, and 5.27 dBi for the 2.4 GHz, 5.2 GHz, and 5.6 GHz bands. Flexibility tests confirm the antenna's suitability for wearable applications, maintaining performance despite bending. The proposed antenna shows significant potential for integration into wearable devices, providing a reliable and efficient solution for modern wireless communication needs.
Design and Development of a Therapeutic Device for Drop Hand Patienst Setyawan, Rahmatul Yoga; Purnamaningsih, Retno Wigajatri
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.53

Abstract

Drop hand is a condition where a person's wrist or fingers experience difficulty and weakness in performing extension and flexion movements. This paper reports the design and development of a therapeutic device for individuals with drop hand, capable of performing passive training movements, electrical stimulation, and monitoring muscle strength. The device consists of a servo motor (MG995) for passive training movements, an IC NE555 specifically used for stimulation, and a Myoware muscle sensor to monitor muscle strength in the hands of individuals with drop hand. The device is also equipped with a NodeMCU ESP8266 microcontroller that can connect to a WiFi network, allowing muscle sensor readings to be stored in Google Sheets. Initial tests showed that the device could lift weights up to 1 kg, generate electrical stimulation frequencies ranging from 2.75 Hz to 18.2 Hz, and that muscle strength monitoring could be performed in real time.
Anomaly Detection in Imbalance Secure Water Treatment Dataset Using LSTM-DC-Wasserstein Generative Adversarial Network with Gradient Penalty Kevin, Jonathan Marshell; Raharya, Naufan
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.56

Abstract

In modern industrial systems, particularly with the advancement of the Internet of Things (IoT), industry players can record machine and system data for comprehensive analysis. This capability is crucial for detecting anomalies and taking necessary corrective actions.However, it is common for manufacturers to lack recorded anomaly datasets, especially for newly operational systems. In this paper, we develop a model to detect anomalies in an imbalanced dataset from the Secure Water Treatment (SWaT) system. The performance of the proposed model is compared with previous works, demonstrating significant improvements in anomaly detection capabilities where it achieves accuracy of 0.9546, precision of 0.9086, recall of 0.6654, and F1 score of 0.7681
Implementation of U-Net for Paddy Field Mapping Using Very High-Resolution Satellite Imagery Isbat, Faiz Khairul; Rizkinia, Mia; Sudiana, Dodi
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.57

Abstract

Mapping rice fields using remote sensing is one method that can be used to determine the number of rice fields, especially in Indonesia. Using this method can increase effectiveness in agricultural resource management. This research uses Pleiades optical satellite image data with very high resolution which is capable of displaying data information on a larger scale. The rice field classification model in this study uses U-net to classifier between rice fields and non-rice fields. The performance of applying this model for the classification of paddy fields and non-rice fields is 96%. These results show that the U-net model is capable of classifying small rice fields with high accuracy
Comparison Performance Analysis of PI and PI-ANFIS in VSC-HVDC Transmission Systems Aziz, Muhamad Abdul; Husnayain, Faiz
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.66

Abstract

Voltage Source Converter-High Voltage Direct Current (VSC-HVDC) transmission systems are preferred for long-distance power transmission due to their flexibility and stability. However, maintaining optimal performance and stability during transient conditions and disturbances is challenging. This research analyzes the performance of VSC-HVDC systems using Proportional-Integral Adaptive Neuro-Fuzzy Inference System (PI-ANFIS) control compared to conventional PI control. A VSC-HVDC system model with PI control provides the basis for generating input-output data to train the ANFIS model. Subsequently, a VSC-HVDC model with PI-ANFIS control is developed and optimized. Performance evaluation under transient conditions and both permanent and temporary disturbances reveals that PI-ANFIS significantly enhances system performance. PI-ANFIS reduces overshoot, accelerates settling time in active power, reactive power, and DC voltage control, and improves stability and recovery time during disturbances. The adaptability and learning capabilities of ANFIS offer additional flexibility for dynamic conditions and unexpected disturbances. This study highlights intelligent control technology advancements, promoting reliable and adaptable power transmission systems, and lays the groundwork for future research and practical applications of PI-ANFIS control in VSC-HVDC systems.
Analysis of Bare Uniform Fiber Bragg Grating Sensor for Measuring Strain on the Landing Gear of the LSU-02 Unmanned Aircraft Anwar, Rudi Choirul; Purnamaningsih, Retno Wigajatri; Rahardjo, Sasono; Hamidah, Maratul; Martha, Aryandi; Firdaus, Muhammad Yusha; Pramudya, Tinova
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.70

Abstract

This paper reports the results of testing a bare uniform FBG sensor for measuring strain occurring on the landing gear of an unmanned aircraft. The landing gear used in this research is made from carbon fiber, known for its high strength and stiffness. The FBG sensor is positioned 20 cm from the center point of the landing gear, specifically at the curved section, to optimize strain detection. Static testing to measure strain was conducted by applying varying mass loads from 0 to 9 kilograms to test the sensor's response to load changes. Measurement results show a constant measurement threshold at a load of 50 grams, indicating sensor stability within that load range, with a measurement resolution of 0.1654 microstrain. Comparison of FBG measurement results with the BLFAB-55 strain gauge sensor revealed a measurement difference of 5.9%. Further research was conducted by introducing disturbances in the form of wind at speeds of 5 m/s and 10 m/s, and temperature disturbances of 30°C and 45°C. The results showed that the 45°C temperature disturbance had the most significant impact on the strain changes measured by the FBG, with an increase in strain value of 265% compared to when there was no disturbance.
Optimal Battery Energy Storage System Placement Strategy in Central Java Electrical System for Voltage and Losses Improvement Fikry, Hafizh Al; Samual, Muhammad Gillfran; Sudiarto, Budi
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.75

Abstract

Over the past few decades, advances in energy storage technology, particularly in the form of Battery Energy Storage Systems (BESS), have provided innovative solutions to address various challenges in the power grid such as voltage fluctuations and high levels of losses, which negatively impact the efficiency and quality of electricity provision. BESS has advantages over other energy storage technologies such as having lower costs, faster response times to power equipment or devices, and increased efficiency and flexibility. The purpose of this research is to determine the optimal capacity and location of the placement of BESS to get an improvement in the voltage profile and losses in the Central Java Province power system. In this study, BESS is incorporated into the Jelok substation based on the calculation method under day and night conditions, which will be sought for the most optimal placement. After getting the most optimal placement, the optimal BESS capacity based on the calculation method, 15 MWh, and 25 MWh will be compared. The effect of optimum BESS placement and sizing of up to 0.0035 pu, and reduce losses up to 1.87 MW.
Optimizing Charge and Discharge of Lithium-Ion Batteries by Deploying PID Controller with Coupled Electro-Thermal-Aging Dynamic Hudaya, Chairul; Akbar, Iwan Bahyudin; Verdianto, Ariono
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.76

Abstract

Lithium-ion batteries (LIBs) are extensively utilized in many applications, from power plant utilities to portable electronic devices. Nevertheless, the performance and longevity of the LIB are affected by the interconnected electro-thermal-aging (ETA) dynamics that occur during the repeated process of charging and discharging. This study presents a technique for managing the charging and discharging of LIBs by controlling the operational voltage, addressing this issue. The technique involves employing a proportional-integral-derivative (PID) controller, which involves interconnected ETA dynamics. The result of the suggested technique is confirmed by comparing experimental data obtained from a cylindrical 26650 lithium-iron phosphate (LFP). The PID controller optimizes the response time of charging and discharging through the voltage while affecting the lifetime of the cell. The results indicated that the implementation of the PID controller allows for a rapid and secure charging and discharging process for LIB, leading to improved cell health and a longer cell life expectancy by controlling a certain degree of parameter known as overshoot. This strategy has the potential to be implemented in the charging and discharging process that positively affects the LIBs performance.
Formulation of the Optimization Problem for Unit Commitment with Price Elasticity-Based Demand Response Sijabat, Monika Leonita Srikarina; Fitri, Ismi Rosyiana
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.78

Abstract

Integrating Demand Response (DR) programs into the Unit Commitment (UC) problem is a promising method to enhance the efficiency and reliability of power systems. This work introduces a new formulation that incorporates price elasticity into the UC problem using a relaxed optimization approach. Our objective is to maximize overall system performance by reducing generation costs and maximizing the utility function while accounting for how demand changes in response to electricity prices, i.e., price elasticity-based DR. The proposed model employs Mixed-Integer Linear Programming (MILP) techniques to efficiently solve the UC problem, using a linear function to model price elasticity-based DR. Our approach has demonstrated its effectiveness in achieving substantial cost reductions and improved load management, as shown through numerical simulations.
Design and Analysis of Information Security Risk Management Based on ISO 27005: Case Study on Audit Management System (AMS) XYZ Internal Audit Department Hidayatullah, Diar Eka Risqi; Kunthi, Raisiffah; Harwahyu, Ruki
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 3 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i3.81

Abstract

Information security is an important aspect and supported by a report issued by the Internal Audit Foundation entitled Risk in Focus 2024 Global Summary. Biggest risk that will be faced in 2024 is Cybersecurity and Data Security with a score of 73% for the global average. Based on a report issued by International Business Machine (IBM) entitled Cost of a Data Breach Report 2023, takes an average of 204 days to find out about a data leak by an affected agency or organization, and takes 73 days to overcome the data leak. To realize this digitalization, an Audit Management System (AMS) system was implemented which can accommodate the audit process starting from the Planning, Execution and Reporting stages as well as follow-up process for recommendations process. Using AMS is not without risks, access to AMS can be done without a Virtual Private Network (VPN). In this research, a risk assessment was carried out based on the ISO/IEC 27005:2022 standard by proposing a method for calculating consequences based on the classification of data in the system and a method for calculating possibilities based on business processes that have an impact on system vulnerabilities and risks that need to be mitigated. ISO/IEC 27002:2022 will be used to anticipate risks. Results of the risk examination revealed that there were 24 risks with 1 very high-level risk, 3 high level risks, 8 medium level risks, 11 low level risks, and 1 very low-level risk in the XYZ internal audit department.

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