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All Journal Journal of Computation Physics and Earth Science
Muhammad Ramdhani Setyo Nugroho
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Physics

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Perancangan dan Implementasi Sistem Monitoring Konsumsi Listrik Tiga Fase: Studi Kasus di Stasiun Geofisika Kelas I Sleman, Yogyakarta Muftareza, Arfany Dhimas; Bagas Pamungkas Saputra; Dimas Aditya Wiranata; Fahar Rafif Arganto; Hilldegard Virgil Richard May; Kholid Amirudin; Muhammad Arya Bintang Pratama; Muhammad Ramdhani Setyo Nugroho; Arif Kurniawan
Journal of Computation Physics and Earth Science (JoCPES) Vol 5 No 2 (2025): Journal of Computation Physics and Earth Science
Publisher : Yayasan Kita Menulis - JoCPES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63581/JoCPES.v5i2.02

Abstract

Efficient electrical energy management is increasingly important in supporting the sustainability of institutional operations and national budget efficiency policies. This study presents the design and implementation of an Internet of Things (IoT)-based 3-phase electricity usage monitoring system implemented at the Sleman Class I Geophysical Station, Yogyakarta. This system integrates a PZEM-004T energy sensor, an ESP32 microcontroller, a 16x2 Liquid Crystal Display, and a W5500 Ethernet module to acquire, process, and transmit real-time electrical parameters, including voltage, current, and kWh. A local network topology is implemented to ensure stable data transmission to a MySQL-based database server, which allows storing data according to a predefined table structure. A web-based user interface is developed to visualize real-time measurements, historical graphs, and electricity cost estimates. Several features are also developed. System evaluation is conducted by comparing the developed instrument with the official PLN kWh meter. Statistical analysis shows an average difference of 0.021 kWh with a standard deviation of 0.02132 kWh. The linear regression results show a slope of 1.000349, an intercept of −3.589572, and a coefficient of determination (R²) of 0.9999988, indicating a near-perfect linear correlation. Error metrics including MAE (0.01934 kWh), RMSE (0.02696 kWh), and MAPE (0.0001885%) confirm the high accuracy and precision of the system. Therefore, the proposed system is reliable for real-time internal energy monitoring and supports data-driven electricity usage optimization.
Optimization of Electronic Control for a Monohull Leisure Boat Using Meteorological Data to Enhance Stability and Safety in Coastal Environments Muhammad Ramdhani Setyo Nugroho; Salsabila, Thalia; Yobel Eliezer Mahardika; Rizky Ramadhani; Anton Widodo
Journal of Computation Physics and Earth Science (JoCPES) Vol 5 No 2 (2025): Journal of Computation Physics and Earth Science
Publisher : Yayasan Kita Menulis - JoCPES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63581/JoCPES.v5i2.04

Abstract

Indonesia’s maritime geography offers significant potential for marine tourism but requires transportation systems capable of operating safely under variable coastal environmental conditions influenced by wind and wave variability. This study presents the design and evaluation of a compact monohull leisure boat integrated with an Electronic Remote Control (ERC) system to improve maneuverability and operational safety. The research applies an engineering design approach involving regression-based estimation of principal dimensions, digital hull modeling using Maxsurf, static stability evaluation through righting arm (GZ) analysis, and spatial optimization using a General Arrangement (GA) plan. Five alternative hull geometries were developed and analyzed to identify the most suitable configuration for marine tourism operations. The stability analysis indicates that all hull models exhibit positive righting arm values within the evaluated heel angle range, confirming adequate static stability under typical coastal conditions. Among the evaluated configurations, Model 4 demonstrates the most favorable stability characteristics. The integration of the ERC system further enhances vessel maneuverability and reliability during low-speed navigation and docking, supporting safer marine tourism transportation in coastal waters.
Co-Authors Anton Widodo ARIF KURNIAWAN Bagas Pamungkas Saputra Dimas Aditya Wiranata Fahar Rafif Arganto Hilldegard Virgil Richard May Kholid Amirudin Muftareza, Arfany Dhimas Muhammad Arya Bintang Pratama Rizky Ramadhani Salsabila, Thalia Yobel Eliezer Mahardika