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All Journal Transmisi: Jurnal Ilmiah Teknik Elektro ELKHA : Jurnal Teknik Elektro Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Share : Journal of Service Learning Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Pengabdian Al-Ikhlas Jambura Journal of Electrical and Electronics Engineering Academia Open Jurnal Pengabdian dan Peningkatan Mutu Masyarakat (JANAYU) Journal of Telecommunication, Electronics and Control Engineering (JTECE) Techno
Yosy Rahmawati
Universitas Pembangunan Nasional Veteran Jakarta
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Medicine & Pharmacology Physics Social Sciences Other

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E-Beacon Card Training Based Application Internet Of Things (IOT) in The School Environment Imelda Uli Vistalina Simanjuntak; Yosy Rahmawati; Ketty Siti Salamah; Akhmad Wahyu Dani; Yuliza Yuliza
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 6 No. 2 (2023): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/abdimas.v6i2.3312

Abstract

At that time, SMK Yadika 11 Jatirangga Bekasi still needed help communicating announcements within the school. In addition to being expensive, buying an intercom is also less effective during the teaching and learning process due to noise pollution. Therefore the PPM Team at Mercu Buana University wanted to provide a solution by introducing Internet of Things (IoT) technology on one of the Bluetooth ebacon devices. eBeacon Card is a Bluetooth Low Energy transmitter connected to various electronic devices. This device will be connected via a short message to each person's cell phone, such as an SMS notification. In this training, two eBeacon Cards uses, which should be applicable in two rooms with a radius of 20 m. However, due to space limitations, both are installed in one room. So that the target information announcement target can receive data from both eBeacon cards with the same announcement display twice. Some of the outputs used in evaluating this training were that they understood the IoT process, how to install and create eBeacon, and could use it for other needs such as announcements, advertisements, etc.
Modifikasi Antena Mikrostrip Berbasis Defected Ground Structure (DGS) Berbentuk Patch Puzzle untuk Aplikasi Sub-6 GHz 5G Yosy Rahmawati; Petrus Kerowe Goran; Vira Ulitama
Journal of Telecommunication Electronics and Control Engineering (JTECE) Vol 5 No 2 (2023): Journal of Telecommunication, Electronics, and Control Engineering (JTECE)
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v5i2.1090

Abstract

Perkembangan jaringan seluler 5G digelar secara bertahap hingga tersebar di seluruh wilayah Indonesia dengan menawarkan layanan internet lebih baik dari generasi sebelumnya. Dalam penerapan teknologi seluler dibutuhkan sebuah antena untuk dapat memancarkan dan menerima gelombang elektromagnetik. Oleh karena itu, dalam penelitian ini akan dilakukan modifikasi antena mikrostrip yang diaplikasikan pada Sub–6 GHz 5G dengan frekuensi kerja 3,5 GHz sesuai pita frekuensi n77 menurut 3GPP yaitu pada rentang frekuensi 3,3-4,2 GHz dengan bandwidth yang dihasilkan miminal 100 MHz. Untuk meningkatkan gain dan bandwidth antena mikrostrip, maka diterapkan teknik Defected Ground Structure (DGS) berbentuk pacth puzzle melalui sketsa bentuk sederhana pada bidang ground plane berbentuk U. Berdasarkan simulasi dihasilkan return loss -39,171 dB, VSWR 1,022, gain 2,452 dB, bandwidth 243,8 MHz dengan pola radiasi bidireksional, sedangkan pengukuran dihasilkan return loss -21,931, VSWR 1,187, gain 2,369, bandwidth 132,1755 MHz dan pola radiasi bidireksional dengan substrat FR-4 epoxy. Dapat disimpulkan antena mikrostrip pacth puzzle dapat bekerja baik pada frekuensi 3,5 GHz untuk teknologi Sub-6 GHz 5G karena memenuhi spesifikasi dalam perancangan antena yaitu return loss ≤ -10 dB, VSWR ≤ 1,5, gain ≥ 2 dB dan bandwidth ≥ 100 MHz.
Analysis of Power Quality in Low Voltage Switch Panels in Real-Time Based on IoT Using the Fuzzy Logic Method Rahmawati, Yosy; Fadhilla , Karima Langgeng; Kadarina , Trie Maya
JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol. 7 No. 2 (2024): Vol. 7 No. 2 (2024): Issues January 2024
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jite.v7i2.10750

Abstract

This far power quality analysis from the PHBTR monitoring system is still done manually. This condition creates several challenges in efficiency and accuracy in detecting and responding to changes in PHBTR power quality. With manual processes, collecting and analyzing data related to power quality can be time consuming, and there is the potential for delays in identifying disturbances or anomalies that could affect PHBTR performance. Therefore, in this research an innovative step was taken by applying the fuzzy logic method to simplify and increase the accuracy of automatic power quality analysis. From the analysis results, it was found that the power quality at the MCC4, GRL2, and CKG116 substations when viewed from voltage, current, frequency, and temperature, the three substations were at normal indications (91.32) and in good condition (76.32). However, the load balance quality of the three substations is still not balanced with load imbalance percentages of 110%, 52% and 17% respectively. This is because there are consumers in one phase using higher power than consumers in another phase, so a load imbalance will occur. This can be caused by differences in the use of electrical equipment or loads on each phase. Through this effort, it is hoped that significant improvements in the efficiency and responsibility of the PHBTR monitoring system can be achieved
Diseminasi Efek Radiasi Speaker Aktif Di Lingkungan Sekolah Cengkareng Simanjuntak, Imelda Uli Vistalina; Rahmawati, Yosy; Agustina, Ellisa; Salamah, Ketty Siti
Jurnal Pengabdian dan Peningkatan Mutu Masyarakat (Janayu) Vol. 3 No. 2 (2022): Jurnal Pengabdian dan Peningkatan Mutu Masyarakat
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/janayu.v3i2.21172

Abstract

Speakers are one of the standard electronic products with wireless capabilities. The Government of Indonesia is responsible for regulating and supervising the movement of goods using wireless domains through the Ministry of Communications and Information Technology. Electromagnetic compatibility (EMC) regulations are included in the entry requirements for wireless communication products to Indonesia. EMC means avoiding interference with other devices caused by radiation. Therefore, regarding this EMC regulation, it is necessary to pay attention to product quality and user safety. Through this community service program for the 2022 period, there will be the dissemination of the effects of active speaker radiation in the Cengkareng school environment as a preventive measure to minimize the impact of active speaker electronic emission radiation on the health of the academic community in the IP YAKIN Cengkareng Junior High School, Jakarta.
Development of a Prototype System for Monitoring and Controlling Cat Care Based on the Internet of Things Rahmawati, Yosy; Zuchriadi, Achmad; Wahyudyan, Dzidan Wiladnurrizqi
JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol. 8 No. 2 (2025): Issues January 2025
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jite.v8i2.14131

Abstract

In today's fast-paced and stressful daily life, many people experience fatigue and stress, necessitating solutions to alleviate these feelings. Taking care of pets, especially cats, can have a positive impact on human mental health. However, caring for cats requires time and effort, particularly in monitoring their health and the environmental conditions of their living space. This study aims to design and develop a prototype of a cat care monitoring and control system based on the Internet of Things (IoT), enabling real-time monitoring and automated control of various aspects, including cat health, body temperature, and feeding. The system integrates multiple components, including ESP-32, MLX90614 GY-906 Sensor, Ultrasonic Sensor, DHT11 Sensor, RTC DS1302, Servo Motor, Relay, LCD 16x2, 5V Water Pump, Exhaust Fan, and the Telegram application as a monitoring interface. The study's findings indicate that air-conditioned rooms provide the most stable and comfortable temperature and humidity conditions for both pets and humans. Additionally, the DHT11 sensor is more suitable for indoor humidity measurement, whereas the DTH sensor is more optimal for outdoor environments. The ultrasonic sensor proves to be practical for distance measurement, while the load cell delivers precise results for weight measurement requiring high accuracy and stability. This research offers an innovative solution to enhance cat monitoring and care, contributing to an overall improvement in pet quality of life.
E-Beacon Card Training Based Application Internet Of Things (IOT) in The School Environment Simanjuntak, Imelda Uli Vistalina; Rahmawati, Yosy; Salamah, Ketty Siti; Dani, Akhmad Wahyu; Yuliza, Yuliza
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 6 No. 2 (2023): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/abdimas.v6i2.3312

Abstract

At that time, SMK Yadika 11 Jatirangga Bekasi still needed help communicating announcements within the school. In addition to being expensive, buying an intercom is also less effective during the teaching and learning process due to noise pollution. Therefore the PPM Team at Mercu Buana University wanted to provide a solution by introducing Internet of Things (IoT) technology on one of the Bluetooth ebacon devices. eBeacon Card is a Bluetooth Low Energy transmitter connected to various electronic devices. This device will be connected via a short message to each person's cell phone, such as an SMS notification. In this training, two eBeacon Cards uses, which should be applicable in two rooms with a radius of 20 m. However, due to space limitations, both are installed in one room. So that the target information announcement target can receive data from both eBeacon cards with the same announcement display twice. Some of the outputs used in evaluating this training were that they understood the IoT process, how to install and create eBeacon, and could use it for other needs such as announcements, advertisements, etc.
Development of frequency modulated continuous wave radar antenna to detect palm fruit ripeness Rahmawati, Yosy; Rizkinia, Mia; Zulkifli, Fitri Yuli
Bulletin of Electrical Engineering and Informatics Vol 14, No 3: June 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v14i3.8749

Abstract

Oil palm fruits farmers in Indonesia have determined the ripeness of oil palm fruits in the traditional way, namely using human eye visuals, which have the weakness of inconsistent levels of accuracy and are prone to errors. The development of increasingly sophisticated technology will help oil palm fruits farmers recognize the characteristics of fruit maturity. Advanced technology, such as frequency modulated continuous wave (FMCW) radar, can assist farmers in accurately identifying fruit maturity. To ensure high accuracy and sensitivity, an antenna with low side lobe level (SLL), high gain, and wide bandwidth in the 23-26 GHz range is required. Using CST Microwave Studio 2023, a designed and simulated antenna achieved an SLL of 24 dB, a gain of 15 dBi, and a bandwidth of 2.5 GHz. These results indicate that higher gain enhances energy directionality and overall antenna performance. Additionally, a smaller angular value improves the antenna’s radiation focus, making it more effective for precision sensing in oil palm fruit ripeness detection.
Implementing IoT-Based Smart Garden System at SMP Al Izhar Rahmawati, Yosy; Zuchriadi, Achmad; Martini, Ni Putu Devira Ayu; Sherila, Ayu Mika
Academia Open Vol 10 No 2 (2025): December (in progress)
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11246

Abstract

General Background: The integration of Internet of Things (IoT) technology in agriculture presents new opportunities for sustainable practices and hands-on education. Specific Background: However, its implementation in junior high school curricula, particularly as a practical environmental learning tool, remains limited. Knowledge Gap: Most schools lack access to real-world IoT-based applications that foster student engagement with digital literacy and environmental awareness simultaneously. Aims: This study aimed to design and implement an IoT-based Smart Garden system for automatic irrigation and lighting at SMP Al Izhar Pondok Labu, while evaluating its educational and technological impacts. Results: The program involved 50 participants who built functional Smart Garden prototypes using sensors and microcontrollers, resulting in significant gains in STEM motivation (+1.1), understanding of IoT (+1.2), and its application in agriculture (+1.2). Novelty: The innovation lies in integrating project-based learning with low-cost IoT hardware to create a replicable educational model that combines STEM skills, environmental education, and digital literacy. Implications: The success of this initiative highlights the potential of IoT-enhanced environmental projects to enrich school-based learning, strengthen 21st-century competencies, and inspire broader adoption of smart, sustainable practices in education.Highlight : The program introduced IoT-based Smart Garden systems to junior high school students through hands-on workshops, fostering practical STEM skills. Students showed a 25% increase in understanding and motivation, based on pre- and post-test assessments, highlighting educational impact. The initiative provides a replicable model for integrating environmental and digital literacy in school curricula, promoting sustainability. Keywords : Automatic Irrigation, Environmental Sustainability, Internet of Things (IoT), Smart Garden, STEM Education
Development of Rectangular Microstrip Antenna Array for RFID-Based Automatic Locker Monitoring System Communication Rahmawati, Yosy; Krisnawati, Luh; Raihan, Muhammad
Journal of Telecommunication Electronics and Control Engineering (JTECE) Vol 7 No 2 (2025): Journal of Telecommunication, Electronics, and Control Engineering (JTECE)
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v7i2.1975

Abstract

This study discusses the design and optimization of a rectangular array microstrip antenna operating at 2.4 GHz for use in an RFID-based locker monitoring system. The optimization process was carried out to enhance antenna performance based on key parameters such as return loss, VSWR, impedance, bandwidth, gain, and radiation pattern. Simulation and measurement results show significant improvement after optimization. The return loss improved from –46.5 dB to –27.6 dB, while the VSWR decreased from 4.964 to 1.000, indicating excellent impedance matching to a 50 Ω system. The bandwidth increased from 94.2 MHz to 126.3 MHz, exceeding the minimum requirement specified in ISO/IEC 18000-4 for 2.4 GHz RFID applications. The radiation pattern exhibits a main lobe at 2° with a maximum gain of 4.91 dBi and a side lobe level of –14.2 dB. These results demonstrate that the optimized antenna meets technical standards and is highly suitable for efficient implementation in fixed RFID reader systems.
Perancangan Sistem Monitoring Kualitas Daya Pada Panel Saklar Tegangan Rendah Secara Real-Time Berbasis Internet of Things (IoT) Rahmawati, Yosy; Ramadhan, Akbar Nicko; Kadarina, Trie Maya
Journal of Telecommunication Electronics and Control Engineering (JTECE) Vol 6 No 1 (2024): Journal of Telecommunication, Electronics, and Control Engineering (JTECE)
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v6i1.1327

Abstract

Jumlah gardu distribusi pada jaringan distribusi tegangan rendah yang banyak dan lokasinya yang tersebar menyebabkan inspeksi pengukuran pada panel hubung tegangan rendah hanya bisa dilakukan satu sampai tiga bulan sekali. Hal itu menjadi kendala untuk merencanakan pemeliharaan preventif karena data pengukuran yang didapatkan terlalu lama waktunya. Oleh karena itu penelitian ini bertujuan membuat suatu sistem monitoring yang dapat dioperasikan dari jarak jauh dan setiap waktu. Dengan memanfaatkan perkembangan teknologi informasi dan komunikasi berupa Internet of Things (IoT) dapat dimanfaatkan menjadi sistem monitoring yang bisa diakses secara real-time dengan konektivitas internet. Pada penelitian ini terdapat dua input sensor, yaitu sensor PZEM-004T dan sensor suhu DS18B20. Kedua sensor tersebut dihubungkan dengan NodeMCU Esp8266 sebagai mikrokontroler. Output dari sistem ini, menampilkan nilai tegangan, arus, frekuensi, dan suhu secara real-time yang dapat dilihat di aplikasi Telegram dan Google Sheet sebagai database. Hasil pengujian dari sistem monitoring ini menunjukkan nilai eror dari sensor PZEM-004T untuk pengukuran tegangan yaitu 0,17% di fasa R, 0,15% di fasa S dan 0,13% di fasa T, untuk pengukuran arus yaitu 3,5% di fasa R, 2,5% di fasa S, dan 2% di fasa T, sedangkan untuk pengukuran frekuensi nilai eror yaitu 0,06% untuk fasa R, 0,07% untuk fasa S, dan 0,05 untuk fasa T. Nilai eror sensor DS18B20 untuk pengukuran suhu yaitu sebesar 3,3%. Nilai eror komponen – komponen pengukuran pada alat monitoring kualitas daya secara real-time ini di bawah 5% yang menunjukkan komponen – komponen tersebut dapat berfungsi dengan baik.
Co-Authors Achmad Zuchriadi Ade Wahyudin Akhmad Wahyu Dani Akhmad Wahyu Dani, Akhmad Wahyu Ayu Mika Sherila Dian Aprianto Dina Amalia Santika Ellisa Agustina Ellisa Agustina Ellisa Agustina, Ellisa Fadhilla , Karima Langgeng Fitri Yuli Zulkifli Goran, Petrus Kerowe Imelda Uli Vistalina Simanjuntak Imelda Uli Vistalina Simanjuntak Imelda Uli Vistalina Simanjuntak Imelda Uli Vistalinas Simanjuntak Ketty Siti Salamah Krisnawati, Luh Lenni Lenni Lenni Lenni MARTINI, NI PUTU DEVIRA AYU Mia Rizkinia Muhammad Irsyad Salim Nabila Mutiara Anjani Ninda Sari Rachmat Muwardi Raihan, Muhammad Ramadhan, Akbar Nicko Rianka Bayu Simorangkir Simanjuntak, Imelda Uli Vistalina Solichah Larasati Trie Maya Kadarina Vira Ulitama Wahyudyan, Dzidan Wiladnurrizqi Yuliza Yuliza Yuliza Yuliza Yuliza Yuliza Yuliza Yuliza