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All Journal Jurnal Teknologi Informasi dan Ilmu Komputer PROtek : Jurnal Ilmiah Teknik Elektro Digital Zone: Jurnal Teknologi Informasi dan Komunikasi TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga) Electron: Jurnal Ilmiah Teknik Elektro Buletin Pos dan Telekomunikasi
Charisma, Atik
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Social Sciences

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Overcurrent and ground fault relay protection settings at tranformator-1 150kV/20kV Braga substation Rusiana Iskandar, Handoko; Mulyono, Herry; Charisma, Atik; Hidayat, Muhammad Reza
JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga) Vol. 3 No. 3: September 2023
Publisher : Jurusan Teknik Elektro, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/jitel.v3.i3.2023.181-190

Abstract

The occurrence of a malfunction at the substation results in power outages and losses in the electrical energy distribution system to consumers. Many tests are carried out to see the performance of the protection system, including the parameters of the over current relay (OCR) and ground fault relay (GFR) in the electrical energy distribution system. This research aims to analyze OCR and GFR values, analyze OCR setting, drop-off, and pick-up values, and analyze OCR time characteristics using DigSilent Power Factory 15.1 software based on existing equipment specification data at the Braga substation. The results show an OCR accuracy level of around 94% on the 20 kV and 150 kV sides. Meanwhile, 92.39% on the 20 kV GFR side and 94.87% on the 150 kV side. The setting value for the pick-up current is 0.92 A on the 20 kV side of the GFR and the drop-off current is 0.85 A on the 150 kV side with a pick-up current of 0.39 A and a drop-up current of 0.37 A. Setting a value on the 20kV side is greater than on the 150 kV side due to the difference in current transformer ratio values. The simulation results show that the OCR and GFR characteristic curves on both sides meet the criteria for a protection system with good performance.
Sistem Komunikasi Audio dengan Teknologi Visible Light Communication (VLC) Menggunakan Laser Led Charisma, Atik; Nur Akbar Setiawan, Rizky; Taryana, Een; Yuliana, Hajiar; Rike Indriani, Alifa
Digital Zone: Jurnal Teknologi Informasi dan Komunikasi Vol. 12 No. 2 (2021): Digital Zone: Jurnal Teknologi Informasi dan Komunikasi
Publisher : Publisher: Fakultas Ilmu Komputer, Institution: Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/digitalzone.v12i2.7519

Abstract

Kegiatan masyarakat di era sekarang yang serba digital menggunakan teknologi tanpa kabel (wireless). Teknologi tanpa kabel menjadi andalan komunikasi, namun seiring perkembangann zaman, ada sebuah teknologi tanpa kabel dengan memanfaatkan cahaya tampak. Teknologi ini dikenal dengan istilah visible light communication (VLC). Sistem VLC terdiri dari bagian transmitter dan receiver. Transmitter berupa komponen-komponen elektronika yang terintegrasi dengan cahaya tampak sebagai media transmisi. Pada penelitian ini membuat bagian transmitter dan receiver untuk komunikasi audio. Cahaya tampak sebagai media transmisi menggunakan laser led karena cahaya dari laser led ini lebih fokus dan pancaran cahayanya lebih jauh dibandingkan dengan yang lain. Sedangkan di sisi receiver menggunakan solar panel sebagai penerima sinyal informasi yang dikirimkan. Penelitian ini berhasil membuat sebuah sistem komunikasi audio berbasis visible light communication. Variasi jarak antara transmitter dan receiver mempengaruhi kualitas suara yang diterima. Pada jarak 500 cm kualitas suara yaitu 99,2 dB pada kondisi gelap dan 99,1 dB kondisi terang. Perubahan sudut pancar transmitter terhadap receiver juga mempengaruhi hasil kualitas suara. Kualitas suara terbaik pada sudut 900 di kondisi terang dengan jarak 50 cm sebesar 97,9 dB sedangkan di kondisi gelap dengan jarak 50 cm pada sudut 1000 sebesar 98,1 dB. Abstract The people activities in today's digital era use wireless technology. Wireless technology has become the mainstay of communication, but along with the times, there is a wireless technology that uses visible light. This technology is known as visible light communication (VLC). The VLC system consist of transmitter and receiver. Transmitters are electronic components that are integrated with visible light as a transmission medium. In this study, the transmitter and receiver are made for audio communication. Visible light as a transmission medium uses an LED laser because the light from this LED laser is more focused and the light beam is farther away than the others. While on the receiver side using a solar panel as a receiver of the information signal that is sent. This research succeeded in making an audio communication system based on visible light communication. Variations in the distance between the transmitter and receiver affect the quality of the received sound. At a distance of 500 cm in dark conditions, the sound quality is 99.2 dB in light conditions and 99.1 dB. Changes in the beam angle of tranmitter to receiver also affect the sound quality. The best sound quality at an angle of 900 in bright conditions with a distance of 50 cm is 97.9 dB while in dark conditions with a distance of 50 cm at an angle of 1000 is 98.1 dB.
IMPLEMENTASI THREAT MITIGATION DAN TRAFFIC POLICY MENGGUNAKAN UTM PADA JARINGAN TCP/IP Hidayat, M. Reza; Saragih, Ruben; Basuki, Sofyan; Charisma, Atik; Setiawan, Antrisha Daneraici
Jurnal Teknologi Informasi dan Ilmu Komputer Vol 11 No 2: April 2024
Publisher : Fakultas Ilmu Komputer, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jtiik.20241127528

Abstract

Penelitian bertujuan merancang Unified Threat Management (UTM) berbasis aplikasi open-source yang mampu melakukan Threat Mitigation dan menerapkan manajemen trafik pada jaringan TCP/IP. Metoda Threat Mitigation menggunakan SNORT sebagai Intrusion Prevention System (IPS) untuk melakukan tindakan terhadap ancaman serta melakukan monitoring trafik yang diintegrasikan dengan aplikasi Splunk sebagai Security Information and Event Management (SIEM). Metoda Traffic Policy menggunakan SQUID sebagai Proxy untuk melakukan manajemen trafik. Pengujian perfomansi jaringan dilakukan dengan mengukur parameter Quality of Service (QOS) terlebih dahulu pada setiap perangkat akses untuk melihat performansi jaringan saat terjadi serangan sebelum dan sesudah implementasi UTM. Serangan Distributed Denial of Service (DDOS) berupa Internet Control Message Protocol (ICMP) Flood dan SYN Flood. Setelah melakukan simulasi serangan DDOS selama 5 menit, Threat Mitigation mampu melakukan drop terhadap paket yang berasal dari serangan DDOS sebanyak 232409 paket dengan nilai throughput maksimum 1,823 Mbps, lebih baik dari throughput yang dihasilkan serangan DDOS sebelum implementasi UTM yaitu 869 Mbps. Hasil indeks parameter QOS setiap perangkat akses jaringan memiliki nilai indeks 4, lebih baik dari indeks parameter QOS sebelum implementasi UTM yaitu 2,843. Traffic Policy pada UTM mampu melakukan efisiensi bandwidth sebesar 4,66% atau 943,6645 MB dari total volume cache 20,23 GB, dengan menerapkan web cache untuk akses Hyper Text Transfer Proctocol (HTTP) dan limitasi throughput sebesar 300 KB pada ekstensi file image, audio, video dan executeable berukuran diatas 20 MB.   Abstract This final project aims to design Unified Threat Management (UTM) based on open-source application that capable to mitigate threat and implement traffic management on TCP/IP network. Threat Mitigation method uses SNORT as Intrusion Prevention System (IPS) and integrated with Splunk as Security Information and Event Management (SIEM). Traffic Policy method use SQUID as Proxy to implement traffic management. Network performance testing will be carried out by measuring the QOS parameters on each access device to be able to see network performance when an attack occurs before and after UTM implementation. The Denial Distributed of Service attacks was simulated with Internet Control Message Protocol (ICMP) Flood and SYN Flood. After simulating DDOS attack for 5 minutes, Threat Mitigation was able to drop 232409 packet that originating from DDOS attack with a maximum throughput value 1.823 Mbps, was better before implementation of UTM which is 869 Mbps. The result of the QOS index parameters for each access device has an index value is 4, was better than before implementation of UTM, which is 2.843. Traffic Policy was able to perform bandwidth efficiency of 4.66% or 943.6645 MB from a total cache volume of 20.23 GB, by implementing web cache for Hyper Text Transfer Protocol (HTTP) access and limiting throughput of 300 KB of image, audio, video and executable file size above 20 MB.
Hyperparameter Optimization of Random Forest Algorithm to Enhance Performance Metric Evaluation of 5G Coverage Prediction Hajiar Yuliana; Iskandar; Hendrawan; Basuki, Sofyan; Hidayat, M. Reza; Charisma, Atik; Vidyaningtyas, Hurianti
Buletin Pos dan Telekomunikasi Vol. 22 No. 1 (2024): June 2024
Publisher : Centre for Research and Development on Resources, Equipment, and Operations of Posts and I

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17933/bpostel.v22i1.390

Abstract

Utilizing of 5G technology has become a major focus in the development of more advanced and efficient telecommunications networks. In this context, 5G coverage prediction becomes an important aspect in network planning to ensure optimal user experience. In this study, we explore the use of Random Forest algorithm to predict 5G coverage, with special emphasis on the hyperparameter optimization process to improve model performance. We conduct experiments with various hyperparameter combinations, including 'max_depth', 'max_features', 'min_samples_leaf', 'min_samples_split', and 'n_estimators', using hyperparameter optimization techniques. The results show that by paying attention to the optimal combination of hyperparameters, we managed to significantly improve the performance of the model. The optimized model produces a Minimum Root Mean Squared Error (RMSE) of 0.6, which is much better than the Random Forest model without hyperparameter optimization which has an RMSE of 1.14. The result of this study confirms the importance of the hyperparameter optimization process in improving the accuracy and consistency of the Random Forest model for 5G coverage prediction. The results have important implications in supporting the development of a successful 5G network infrastructure in the future.
Perancangan Antena Segitiga Gerigi Circular Slot untuk Aplikasi Long Term Evolution (LTE) Eriane Putri, Febby; Charisma, Atik; Ketut Hariyawati Dharmi, Ni
ELECTRON Jurnal Ilmiah Teknik Elektro Vol 2 No 2: Jurnal Electron, November 2021
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/electron.v2i2.3

Abstract

The communication technology that is currently popular is 4G LTE technology. Technology that has very high efficiency and speed of access. Antennas with good performance are needed to support LTE technology with small dimensions, light weight and cheap to manufacture in large quantities, and these antennas are microstrip antennas. Microstrip antenna has the disadvantage of low gain and narrow bandwidth. Proximity coupled is one method to improve bandwidth and gain on microstrip antennas. Proximity coupled is a feeding technique or method of feeding by adding a substrate for the groundplane and feed channel. In this simulation, in addition to using the proximity coupled feeding method, the patch antenna which is triangular in shape will be added to a circular slot to improve the performance of the antenna. The simulation results obtained for the resonant frequency of 2.35 GHz, namely return loss -24.6419 dB, VSWR 1.0192 and gain 6.6598 dB and bandwidth of 73.3 MHz with range 25 – 100 MHz. This specification is in accordance with the needs of LTE antennas
Pengaruh Penambahan Slot Terhadap Kinerja Antena WLAN Charisma, Atik; Pratama, Reja; Rusiana Iskandar, Handoko; Haz, Fauzia
ELECTRON Jurnal Ilmiah Teknik Elektro Vol 4 No 1: Jurnal Electron, Mei 2023
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/electron.v4i1.41

Abstract

One of the devices that plays an important role in the performance of Wireless LAN (WLAN) is the antenna. Microstrip antennas are generally used in high-frequency technology designs. Therefore it is suitable for increasing WLAN performance that works at the 2.4 GHz frequency. In this study, adding slots to the antenna to improve WLAN performance. The array antenna 2x1 is designed to work at the WLAN frequency of 2.4 GHz. The gain produced by this antenna is 3.8 dB which is very influential in strengthening the WLAN antenna signal.
Prototipe Sistem Keamanan Buka Pintu dan Jendela Menggunakan Aplikasi Telegram Tiffany, Nivika; Bakti Zainal, Yuda; Indrayanto, Ricki; Charisma, Atik; Haz, Fauzia
ELECTRON Jurnal Ilmiah Teknik Elektro Vol 5 No 2: Jurnal Electron, November 2024
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/electron.v5i2.216

Abstract

Crimes such as theft and housebreaking are serious problems related to security. This problem often occurs when the homeowner is out of town or leaving the house for a few days. Therefore, an effective security system is needed so that the house is not easily broken into and can be monitored via smartphone by the owner. To minimize the crime rate, we designed a microcontroller-based automatic door lock. This automatic system can control the solenoid door lock and function as a home security. This study aims to develop a door lock and window security system based on a microcontroller and the Internet of Things. This system utilizes RFID to open the door which is processed by Arduino, as well as a PIR Sensor for double security which is processed using NodeMCU ESP8266. The smartphone functions as a medium for monitoring and opening the door. The NodeMCU ESP8266 microcontroller on the PIR Sensor is tasked with processing data so that when the sensor detects movement, the buzzer will sound and send a notification to the smartphone. The results of the study show that the automatic door lock can be accessed via RFID and applications on smartphones. The system can detect RFID at a distance of 3 cm with a response time of 2-5 seconds, and successfully detects movement in humans and animals with an accuracy rate of 86.67%.
Implementasi Sistem Komunikasi FM Pada Prototype Pendeteksi Dini Gempa Charisma, Atik; Taryana, Een; Saputra, Dede Irawan; Misuari, Muhammad Burhannudin; Setiawan, Aldi; Dharmawan, Faisal
PROtek : Jurnal Ilmiah Teknik Elektro Vol 7, No 2 (2020): Protek : Jurnal Ilmiah Teknik Elektro
Publisher : Program Studi Teknik Elektro Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/protk.v7i2.1812

Abstract

An earthquake is a vibration that occurs due to plates at the base of the earth rubbing against each other. An earthquake can have several impacts, namely material loss and loss of life and trauma for some people who feel it. This happens because people are not fast enough in getting information. Therefore we need an earthquake detection device that is relatively inexpensive. In this study designed a prototype for earthquake early detection using Frequency Modulation (FM) communication. The components of this system are Arduino Uno which functions as a microcontroller, SW-420 vibration sensor to detect vibrations, buzzer as the output of the SW-420 sensor in the form of sound and FM transmitter V2.0 which functions as a medium for transmitting radio frequency signals and sending sound from the buzzer . The level of vibration that indicates that an earthquake occurred namely 3-5 with a conversion of 5-10 SR. The system would have the ability to provide information in the form of sound received by a radio or FM receiver. The distance that can be emitted by the FM transmitter module V2.0 is 17.87 meter
Rancang Bangun Prototipe Monitoring Volume Cairan Infus dan Kapasitas Oksigen Medis dengan Warning System berbasis Internet of Things Somantri, Nivika Tiffany; Adji, Tatag Purnomo; Yuliana, Hajiar; Charisma, Atik; Winanti, Naftalin; Haz, Fauzia; Nurjaman, Dede Furqon
TELKA - Telekomunikasi Elektronika Komputasi dan Kontrol Vol 11, No 2 (2025): TELKA
Publisher : Jurusan Teknik Elektro UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/telka.v11n2.248-261

Abstract

Infus dan oksigen medis merupakan komponen vital dalam perawatan pasien di rumah sakit. Ketidakakuratan dalam pemantauan volume cairan infus dan kapasitas oksigen dapat mengakibatkan keterlambatan penanganan yang membahayakan keselamatan pasien. Penelitian ini bertujuan merancang prototipe sistem pemantauan volume cairan infus dan kapasitas oksigen medis berbasis Internet of Things (IoT) dengan warning system untuk meningkatkan efisiensi perawatan. Sistem ini menggunakan sensor load cell dengan modul HX711 sebagai sensor pendeteksi ketersediaan cairan infus pasien, NodeMCU ESP32 sebagai komponen kontrol yang terhubung dengan jaringan internet, sensor load cell dan Sensor HK1100C untuk membaca kapasitas tekanan oksigen medis pada tabung. Data hasil pengkuran sensor tersebut di sajikan pada web server hinger,io dan google spreadsheet serta dalam tampilan LCD. Hasil pengujian sistem setelah dilakukan perbandingan dengan alat ukur yang terkalibrasi serta pengujian fungsi internet of things didapatkan bahwa alat ini memiliki tingkat keakurasian pembacaaan sensor dengan error 0,37% untuk sensor loadcell dan error 3,72% untuk sensor tekanan oksigen. Prototipe ini diharapkan dapat menjadi solusi otomatis dalam meminimalkan risiko human error dan meningkatkan respons tenaga medis. Infusion and medical oxygen are vital components in patient care in hospitals. Inaccuracy in monitoring the volume of infusion fluids and oxygen capacity can result in delays in treatment that endanger patient safety. This study aims to design a prototype of an Internet of Things (IoT)-based monitoring system for infusion fluid volume and medical oxygen capacity with a warning system to improve care efficiency. This system uses a load cell sensor with the HX711 module as a sensor to detect the availability of patient infusion fluids, NodeMCU ESP32 as a control component connected to the internet network, a load cell sensor and an HK1100C sensor to read the capacity of medical oxygen pressure in the cylinder. The measurement data from the sensor is presented on the thinger.io and google spreadsheet web servers and on the LCD display. The results of system testing after comparison with calibrated measuring instruments and testing the internet of things function showed that this tool has a level of sensor reading accuracy with an error of 0.37% for the load cell sensor and an error of 3.72% for the oxygen pressure sensor. This prototype is expected to be an automatic solution in minimizing the risk of human error and increasing the response of medical personnel.
Co-Authors Adji, Tatag Purnomo Aldi Setiawan, Aldi Bakti Zainal, Yuda Basuki, Sofyan Dharmawan, Faisal Een Taryana Eriane Putri, Febby Hajiar Yuliana Haz, Fauzia Hendrawan Herry Mulyono Hidayat, M. Reza Hidayat, Muhammad Reza Hurianti Vidyaningtyas Indrayanto, Ricki ISKANDAR Ketut Hariyawati Dharmi, Ni Misuari, Muhammad Burhannudin Nur Akbar Setiawan, Rizky Nurjaman, Dede Furqon Pratama, Reja Rike Indriani, Alifa Rusiana Iskandar, Handoko Saputra, Dede Irawan Saragih, Ruben Setiawan, Antrisha Daneraici Somantri, Nivika Tiffany Tiffany, Nivika Winanti, Naftalin Yuliana, Hajiar