Article Per Year (5 Year)
p-Index From 2020 - 2025
3.883
P-Index
This Author published in this journals
All Journal JURNAL NASIONAL TEKNIK ELEKTRO Jurnal Ilmiah Flash JTERA (Jurnal Teknologi Rekayasa) TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol Infotekmesin REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Jurnal Jaringan Telekomunikasi E-JOINT (Electronica and Electrical Journal Of Innovation Technology) JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga) Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Procedia of Social Sciences and Humanities Urecol Journal. Part E: Engineering Power Elektronik : Jurnal Orang Elektro Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Journal of Power, Energy, and Control
Riyani Prima Dewi
Politeknik Negeri Cilacap
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

Published : 20 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 20 Documents
Search

 1   2 
Smart pot untuk tanaman hias indoor berbasis aplikasi Android dan Telegram: Smart pots for indoor ornamental plants based on Android and Telegram applications Dewi, Riyani Prima; Pratiwi, Artdhita Fajar; Rosmeriana, Fitriana
JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga) Vol. 3 No. 1: March 2023
Publisher : Jurusan Teknik Elektro, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/jitel.v3.i1.2023.9-18

Abstract

Setiap tanaman memiliki kebutuhan yang berbeda-beda, seperti kebutuhan sinar dan air dimana kedua hal ini sangat mempengaruhi hidup dari tanaman. Penyinaran dan penyiraman pada tanaman indoor umumnya masih dilakukan secara manual yaitu dengan mengeluarkan tanaman ke luar rumah agar mendapatkan pencahayaan. Keadaan seperti ini akan sangat merepotkan jika melihat kondisi fisik atau kesibukan dari pemilik tanaman. Dari permasalahan di atas, pada penelitian ini akan dirancang alat dimana kebutuhan penyinaran dan penyiraman dapat dikerjakan secara otomatis sekaligus dapat memonitoring kondisi tanah, suhu, kelembaban udara, dan level air, melalui aplikasi pada Android. Hasilnya berupa smart pot dengan sensor kelembaban tanah yang mendeteksi keadaan tanah di dalam pot. Jika tanah kering, maka pompa menyala dan tanaman tersiram dengan otomatis. Lampu menyala setiap pukul 09.00 WIB sampai 13.00 WIB dengan sensor DHT11 yang mampu mendeteksi suhu udara di sekitar pot. Hasil pengujian tingkat rata-rata error yaitu 0,956°C untuk pendeteksian suhu. Alat ini juga dilengkapi sensor ketinggian air yang dapat membaca ketersediaan air di dalam pot yang ditampilkan menggunakan LED bar. Dari hasil pengujian 5 bar menunjukan ketersediaan air 50% atau setengah dari ketersediaan air di dalam pot. Pengguna juga akan menerima peringatan melalui Telegram ketika kelembapan pot berada pada kondisi kurang dari set point yang sudah ditentukan.
Optimalisasi Labview Sebagai Kendali dan Monitoring Arus Tegangan pada Modul Solar Cell Menggunakan Jaringan Lokal Sugeng Dwi Riyanto; Purwiyanto Purwiyanto; Riyani Prima Dewi
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1910

Abstract

Renewable energy sources in Indonesia have been widely used, one of which is solar energy, for various needs, one of which is for solar power generation by using solar cells as the medium. In generating electricity, solar cells are very dependent on the intensity of the sun so as to produce currents and voltages that are not constant. Because of this, a monitoring system was created to monitor the current and voltage in a solar cell module to determine current and voltage conditions. In this study, the monitoring system used wireless data transmission via the XBee S2C module installed on the Arduino Mega 2560 and Arduino UNO. The INA 219 sensor is mounted on a solar cell module along with a relay module connected to the Arduino Mega 2560 and the XBee S2C module. The test results show that wireless data transmission cannot be used indoors at a distance of more than 20 meters. The INA 219 sensor as a reader for DC current and voltage parameters has an error rate of 0.49% to 0.75% for voltage and for DC current readings it has an error rate of 1.85%. The results of current and voltage readings are displayed on a LabVIEW interface in real-time and can be accessed via a web browser using a local network. Relay control carried out through LabVIEW has a delay time of 6.08 seconds. Logging data can be stored in .xls files and data displayed on a web browser has a delay of one to two seconds.
Analisa Terjadinya Electrical Treeing Pada Isolator Komposit dengan Bahan Pengisi Serat Pelepah Nipah Saepul Rahmat; Riyani Prima Dewi; Erna Alimudin
Infotekmesin Vol 15 No 1 (2024): Infotekmesin: Januari, 2024
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v15i1.2090

Abstract

Technological developments in materials are increasingly evolving, one form of development is the type of composite insulation. One of the natural fiber composites currently available is a composite from palm fiber which provides increased dielectric strength. Partial discharge due to voids in the composite results in structures such as electrical treeing due to changes in the properties and morphology of the composite causing increased insulation failure and disrupting power distribution. This research tested the strength of Epoxy composite insulation and palm leaf ash filler. By combining these two materials, a complementary composite insulating material will be formed to prevent electrical treeing. The results of the research show that the composite insulating material with nipa palm fiber as filler has an average breakdown voltage value of 40 kV and is above the standard breakdown voltage value for medium voltage insulators of 30 kV. The addition of more and more palm leaf ash filling material will produce voids, thereby accelerating the occurrence of electrical treeing and decreasing the breakdown voltage of the insulation.
Rancang Bangun CNC Router 3 Axis Ukir Kayu Untuk Kerajinan Kaligrafi Sugeng Dwi Riyanto; Muhamad Yusuf; Riyani Prima Dewi; Robbihim Nurdiansyah
Infotekmesin Vol 15 No 1 (2024): Infotekmesin: Januari, 2024
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v15i1.2156

Abstract

The Indonesian wood industry is diverse, with wood carving being one of its most popular products. However, the manual wood carving process is not suitable for large-scale production. To address this challenge, a new tool has been developed to increase the production of wood crafts, especially calligraphy carving. This tool is a 3-axis wood carving CNC router machine controlled by a computer and smartphone. The CNC router machine was designed using the CNC Shield V3 and the Arduino Uno R3 motor driver, A4988 as a stepper motor controller. The mechanism applied includes creating vector images programmed with gcode, controlling and engraving calligraphy through software on computers and applications on smartphones with Bluetooth HC – 05 communication with a maximum distance of smaller than 10 meters. Based on control data by computer testing geometry testing circle dimensions of 58 mm x 56 mm and feed rates of 5 mm/sec, 8 mm/sec and 10 mm/sec with engraving times of 01:12, 00:48 and 00:42. Testing Muhammad's carving with dimensions of 100 mm x 100 mm and feed rates of 5 mm/sec, 8 mm/sec and 10 mm/sec with engraving times of 05:22, 03:45 and 03:24. Tests for cutting 12 mm thick MDF wood with a depth 1.5 mm and a feed rate of 5 mm/sec cuts 8 rounds for 13:12 min/sec. The control data by smartphone testing the geometry of the circle with dimensions of 50 mm x 50 mm and a feed rate of 500mm/min with a carving time of 58:43 minutes. Testing Muhammad's engraving dimensions of 70mm x 60mm and feed rates of 500 mm/min, 800 mm/min, and 1000 mm/min with engraving times of 54:34, 39:25, and 35:28. The test for cutting 12 mm thick MDF wood with a depth of 1.5 mm and a feed rate of 500 mm/min-cut 8x rounds for 10:21 minutes/second.
IoT-Based Control, Monitoring, and Protection System for 3-Phase Induction Motors in Electric Motorcycles Musyafiq, Afrizal Abdi; Akbar, Mohammad Hafiz; Purwiyanto, Purwiyanto; Ilahi, Novita Asma; Dewi, Riyani Prima; Pradana, Muhammad Fakhruriza
Journal of Power, Energy, and Control Vol. 1 No. 2 (2024)
Publisher : MSD Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62777/pec.v1i2.32

Abstract

This study investigates the application of the Internet of Things (IoT) for wireless control and monitoring of a 3-phase electric motor using a smartphone. The system integrates PZEM-004T, DS18B20, and Hall Effect sensors to collect data on voltage, current, temperature, and rotational speed using the NodeMCU ESP8266 microcontroller. Measurements are displayed on an LCD and transmitted to the Blynk server for smartphone access. A comparative method evaluates the accuracy of sensor readings against standard measuring instruments. Results obtained an average percentage error of 0.5% for the R phase voltage, 0.2% for the S phase, and 0.1% for the T phase. Current measurements reveal errors of 5% for the R phase, 10.3% for the S phase, and 11.7% for the T phase. The control system’s performance varies with internet speed, with an average delay of 0.99 seconds on a 4G network and 2.51 seconds on 3G. Additionally, the study evaluates three protection mechanisms, demonstrating that the motor stops within 4.03 seconds in the event of a phase failure, while overcurrent and overheating protections activate within 8.47 seconds and 3.64 seconds, respectively. Overall, the findings affirm the viability of IoT in motor monitoring and control, emphasizing accuracy and response times under varying conditions.
PEMANFAATAN MEDIA TRAINER PEMBANGKIT LISTRIK TENAGA SURYA SEBAGAI SARANA EDUKASI ENERGI TERBARUKAN BAGI SISWA SD N 01 BANJARWARU Dewi, Riyani Prima; Rahmat, Saepul; Ilahi, Novita Asma; Purnata, Hendi; Musyafiq, Afrizal Abdi
Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Vol. 5 No. 2 (2024): Vol. 5 No. 2 oktober 2024
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/sitechmas.v5i2.5999

Abstract

Kegiatan pengabdian ini bertujuan untuk mengenalkan konsep energi terbarukan, khususnya energi surya, kepada siswa SD N 01 Banjarwaru melalui penggunaan trainer Pembangkit Listrik Tenaga Surya (PLTS) sebagai media pembelajaran. Proses kegiatan diawali dengan survey awal dan Focus Group Discussion (FGD), diikuti oleh pembuatan dan pelatihan penggunaan media pembelajaran. Hasil dari kegiatan menunjukkan bahwa siswa dapat mengikuti seluruh rangkaian kegiatan dengan baik dan memahami konsep dasar energi terbarukan. Trainer PLTS berfungsi optimal, memungkinkan siswa untuk melihat langsung bagaimana energi surya dapat dikonversi menjadi listrik. Narasumber juga memberikan paparan yang komprehensif tentang pentingnya energi terbarukan dan teknis operasional PLTS, yang memperkaya pemahaman siswa. Antusiasme siswa terlihat dari keaktifan mereka dalam sesi tanya jawab, yang menunjukkan ketertarikan mereka terhadap materi yang disampaikan. Kesimpulannya, kegiatan ini tidak hanya berhasil meningkatkan pemahaman siswa tentang energi terbarukan, tetapi juga memberikan pengalaman praktis yang bermanfaat. Kegiatan ini diharapkan dapat menjadi model pembelajaran yang diterapkan di sekolah-sekolah lain untuk meningkatkan kesadaran lingkungan di kalangan siswa
Feasibility Analysis of the Implementation of a Photovoltaic Water Cooling System Riyani Prima Dewi; Saepul Rahmat
Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Vol 11 No 1 (2024): Jurnal Ecotipe, April 2024
Publisher : Jurusan Teknik Elektro, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jurnalecotipe.v11i1.4442

Abstract

Solar Panel Technology for the Treatment of Eucalyptus Oil Refined Waste Rahmat, Saepul; Purnata, Hendi; Ilahi, Novita Asma; Musyafiq, Afrizal Abdi; Dewi, Riyani Prima
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 6, No 2 (2025): Reka Elkomika
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v6i2.98-107

Abstract

Banjarwaru Village, Nusawungu District, Cilacap Regency, has natural resources, especially eucalyptus plants, which have the potential to develop the economy of the village community. The biggest problem faced by LMDH Dadi Makmur as a unit that manages the eucalyptus oil business is that after the production of eucalyptus oil distillation, it will produce residual waste from eucalyptus twigs and leaves with quite a large volume and only allowed to be piled up around the yard where the distillery is, causing area storage of essential oil raw materials is narrow and also takes a long time to become organic fertilizer. The innovation offered through this community service activity is implementing a briquette printing machine from eucalyptus oil refining waste, which is energy efficient and based on solar panels. The dedication results show that the eucalyptus oil waste processing activity and reducing environmental pollution also produce biomass briquettes that the residents of Banjarwaru Village can utilize as a leading economic product of Banjarwaru Village. The test data of the briquette making machine shows that the output voltage from the inverter produces an AC voltage with a value of 216 - 221 V, so that it can rotate the AC motor with a rotation of 800 - 1400 rpm.
Sistem Pemantauan Gejala Korona Berbasis IoT sebagai Alat Proteksi Jaringan Distribusi Tegangan Menengah Alimudin, Erna; Rahmat, Saepul; Dewi, Riyani Prima; Widianingsih, Betti; Sumardiono, Arif
JTERA (Jurnal Teknologi Rekayasa) Vol 9, No 2: December 2024
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v9.i2.2024.183-190

Abstract

Kegagalan isolasi peralatan listrik tegangan tinggi merupakan permasalahan utama yang dihadapi oleh penyedia jasa ketenagalistrikan, khususnya dalam menjaga keandalan penyaluran tenaga listrik. Salah satu factor penyebab kegagalan isolasi pada peralatan tinggi adalah efek korona yang mengakibatkan peralatan tenaga listrik mengalami kerusakan. Tujuan dari kegiatan penelitian ini adalah mengintegrasikan beberapa sensor untuk mendeteksi tanda tanda peralatan jaringan distribusi yang telah mengalami fenomena korona melalui pengamatan frekuensi, sinar UV, dan kadar gas ozon. Data masukan dari sejumlah sensor akan diproses oleh mikrokontroler dan melalui koneksi nirkabel Internet of Things akan ditampilkan melalui layar HMI Nextion di lokasi berbeda dan jika nilai yang dideteksi melebihi nilai referensi, mikrokontroler menginstruksikan alarm buzzer berbunyi. Hasil penelitian menunjukkan bahwa prototipe alat pendeteksi korona mampu mengidentifikasi nilai kadar ozon sebesar 35 ppb, frekuensi desis rata rata sebesar 157 dB, serta spektrum cahaya UV sebesar 336 nm. Frekuensi desis peralatan akibat korona dan spektrum cahaya yang terbentuk telah melewati ambang batas standar. Kondisi tersebut telah memenuhi 2 dari 3 parameter yang menunjukkan bahwa peralatan distribusi telah mengalami efek korona.
Pengaruh Sistem Pendingin terhadap Daya Keluaran Panel Surya Dewi, Riyani Prima; Hazrina, Fadhillah; Illahi, Novita Asma; Maemunah, Putri Maya
TELKA - Telekomunikasi Elektronika Komputasi dan Kontrol Vol 10, No 3 (2024): TELKA
Publisher : Jurusan Teknik Elektro UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/telka.v10n3.264-271

Abstract

Indonesia memiliki potensi besar dalam pemanfaatan energi surya karena letaknya yang strategis di garis khatulistiwa. Panel surya mengonversi radiasi matahari langsung dengan efisiensi puncak sebesar 9-12%, sementara lebih dari 80% radiasi matahari tidak dapat dikonversi menjadi energi listrik. Salah satu faktor yang mempengaruhi efisiensi panel surya adalah suhu permukaan panel yang tinggi, yang menyebabkan penurunan daya keluaran. Penelitian ini bertujuan untuk merancang dan menguji sistem pendingin panel surya menggunakan fluida air sebagai media pendingin guna mengoptimalkan daya keluaran dan mencegah kerusakan akibat tingginya intensitas radiasi matahari. Sistem pendingin ini dirancang dengan mengalirkan fluida air melalui pipa spiral di belakang permukaan panel surya berkapasitas 50 Wp. Hasil pengujian menunjukkan bahwa suhu permukaan panel tanpa pendingin berkisar antara 40°C hingga 49°C. Sementara itu, penggunaan pendingin air aquades menurunkan suhu permukaan panel menjadi 34°C hingga 38°C, dan penggunaan air yang dicampur dengan es batu lebih efektif menurunkan suhu menjadi 27°C hingga 30°C. Tegangan rata-rata pada panel tanpa pendingin adalah 19,9 V dengan daya keluaran sebesar 19,59 W. Dengan penggunaan pendingin air aquades, tegangan meningkat menjadi 20,4 V dengan daya keluaran sebesar 20,48 W, sedangkan penggunaan air campuran es batu menghasilkan tegangan sebesar 20,5 V dan daya keluaran sebesar 20,88 W. Penelitian ini membuktikan bahwa penggunaan sistem pendingin berbasis air aquades dan es batu efektif dalam menurunkan suhu permukaan panel surya dan meningkatkan daya keluaran panel surya. Indonesia has great potential for solar energy utilization due to its strategic location along the equator. Solar panels convert direct solar radiation with a peak efficiency of 9-12%, while over 80% of solar radiation cannot be converted into electrical energy. One of the key factors affecting the efficiency of solar panels is the high surface temperature, which leads to a decrease in power output. This study aims to design and test a cooling system for solar panels using water as the cooling medium to optimize power output and prevent damage caused by high solar radiation intensity. The cooling system is designed by circulating water through a spiral pipe behind the surface of a 50 Wp solar panel. The test results show that the surface temperature of the panel without cooling ranges from 40°C to 49°C. Meanwhile, the use of distilled water as a cooling fluid reduces the surface temperature to between 34°C and 38°C, and the use of water mixed with ice is more effective, reducing the temperature to between 27°C and 30°C. The average voltage of the panel without cooling is 19.9 V, with a power output of 19.59 W. With the use of distilled water, the voltage increases to 20.4 V, with a power output of 20.48 W, while the use of water mixed with ice yields a voltage of 20.5 V and a power output of 20.88 W. This research demonstrates that the use of a cooling system based on distilled water and ice is effective in reducing the surface temperature of solar panels and increasing their power output. 
Co-Authors Afrizal Abdi Musyafiq Agus Setiawan Akbar, Mohammad Hafiz Alimudin, Erna Alyssa Diva Mustika Arif Sumardiono Betti Widianingsih Devi Taufiq Nurrohman Dodi Satriawan Erna Alimudin Erna Alimudin Fadhillah Hazrina Hazrina, Fadhillah Hendi Purnata Hera Susanti Illahi, Novita Asma Maemunah, Putri Maya Much. Sobri sungkar Muhamad Yusuf Muhammad Fakhruriza Pradana, Muhammad Fakhruriza Novita Asma Ilahi Purwiyanto Purwiyanto Purwiyanto Purwiyanto Purwiyanto Purwiyanto, Purwiyanto Rafiq Subarkah Robbihim Nurdiansyah Rony Darpono Rony Darpono Rony Darpono Rosmeriana, Fitriana Saepul Rahmat Saepul Rahmat Saepul Rahmat Saepul Rahmat, Saepul Sainudin Sainudin Sugeng Dwi Riyanto Sumardiono, Arif Uli Karyani Usman Barokah Widianingsih, Betti Zaenurrohman Zaenurrohman