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All Journal Teodolita: Media Komunikasi Ilmiah di Bidang teknik IJITEE (International Journal of Information Technology and Electrical Engineering) Journal of Electronic and Electrical Power Application Vortex Jurnal Pengabdian Bersama Masyarakat Indonesia Jurnal Sistem Informasi dan Ilmu Komputer Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer Green Engineering: Journal of Engineering and Applied Science J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Rahardian Luthfi Prasetyo
Universitas Wijayakusuma Purwokerto
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Transportation Other

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Bandwidth Upgrade in Printed Dipole Antennas Design for LTE Base Station Rahardian Luthfi Prasetyo; Iswandi Iswandi; Eny Sukani Rahayu
IJITEE (International Journal of Information Technology and Electrical Engineering) Vol 2, No 4 (2018): December 2018
Publisher : Department of Electrical Engineering and Information Technology,Faculty of Engineering UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1666.657 KB) | DOI: 10.22146/ijitee.43842

Abstract

Abstract—In this study the research design development has been carried out by changing the radiating element field width. Radiating element field extension was administered by simulating it and trying to measure the value one by one in antenna simulator software.  The radiating element widening was administered so that the resulting bandwidth could be greater. After changing the width of the field, an element radiating field length adjustment was administered to adjust the operating frequency used in Indonesia. After the design worked at the desired frequency and produced a desired bandwidth, antenna fabrication was administered and its results was tested using Mini VNA Tiny to find out the antenna value if mass produced.
Penerapan Framework Laravel Pada Pembangunan Sistem Informasi Profil Desa Sukoharjo Arif Nugraha Hernanjaya; Yulita Kartika Sari; Nurul Kholisatul ‘Ulya; Rahardian Luthfi Prasetyo
Jurnal Sistem Informasi dan Ilmu Komputer Vol. 1 No. 1 (2023): Februari : Jurnal Sistem Informasi dan Ilmu Komputer
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jusiik-widyakarya.v1i1.3149

Abstract

The need for information for Sukoharjo Village is still lacking, Sukoharjo Village still provides information and makes complaints using conventional methods. This conventional method causes slow response and lack of monitoring and evaluation from village officials. This research aims to design a website-based Sukoharjo village profile information system. This research uses the waterfall method which starts from the analysis, design, coding and testing stages. Meanwhile, several methods in the data collection process were observation, interviews and literature study. And for the system testing method, black box testing is used with system design using UML (Unified Modeling Language). This village profile information system can disseminate information about Sukoharjo Village, especially about the village, organizational structure, population data and can make complaints online which can be accessed via devices owned by visitors.
Edukasi Masyarakat terhadap Kejahatan Dunia Digital di Dusun Kampung Baru RT 03 RW 07 Pabelan, Kartasura, Sukoharjo Rahardian Luthfi Prasetyo; Arif Nugraha Hernanjaya; Siti Shofiyatun; Sandy Prasetyo Deniawan Putra
Jurnal Pengabdian Bersama Masyarakat Indonesia Vol. 2 No. 3 (2024): Juli : Jurnal Pengabdian Bersama Masyarakat Indonesia
Publisher : CV. Aksara Global Akademia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59031/jpbmi.v2i3.480

Abstract

Personal hygiene merupakan aspek penting dalam kesehatan dan kesejahteraan individu, khususnya bagi anak-anak usia dini seperti siswa Taman Kanak-Kanak (TK). Kurangnya kesadaran dan pengetahuan tentang personal hygiene dapat menyebabkan berbagai masalah kesehatan. Penting dilakukan screening kebutuhan personal hygiene pada siswa TK. Tujuan kegiatan ini adalah meningkatkan kesadaran dan pengetahuan siswa, tentang pentingnya personal hygiene serta membangun kebiasaan kebersihan pribadi yang baik pada siswa TK Aisyiyah Kadipiro I Surakarta. Pada saat kegiatan, mengingat banyaknya jumlah siswa yang akan diperiksa, maka petugas yang terdiri 6 dosen dan 4 mahasiswa dibagi menjadi 3 kelompok kerja dengan pembagian sebagai berikut: 2 mahasiswa mengambil data TB dan BB; sisanya dijadikan 2 kelompok yang bertugas melakukan anamnesis dan pemeriksaan kesehatan. Hasil kegiatan diperoleh data bahwa jumlah siswa yang ikut serta dalam kegiatan adalah 103 siswa dengan rincian hasil sebagai berikut: 1) Kebersihan gigi dan mulut: sebanyak 39 siswa (38%) dalam kondisi gigi bersih (tidak terdapat caries gigi), dan 64 siswa (63%) memiliki caries gigi; 2) Kebersihan telinga: Sebanyak 61 siswa (60%) memiliki telinga bersih tanpa serumen, atau hanya sedikit serumen dan sebanyak 42 siswa (40%) ditemukan banyak kotoran telinga; 3) Kebersihan kuku: sebanyak 77 siswa (75%) kuku bersih dan pendek dan 26 siswa (25%) memiliki kuku kotor atau kuku panjang.
Pendekatan Dan Metode Spectrum Sensing Dalam Tinjauan Literatur Rahardian Luthfi Prasetyo; Ahmad Nugroho Jati; I Made Adhi Wiryawan; Muhammad Ibkar Azki Himmawan
Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 2 No. 4 (2024): Agustus: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v2i4.236

Abstract

Pemanfaatan spektrum gelombang radio telah meningkat pesat dalam beberapa dekade terakhir, namun tidak sejalan dengan ketersediaan frekuensi yang tersedia untuk pengguna. Fenomena ini diperparah oleh banyaknya pita frekuensi yang tidak digunakan oleh pemiliknya, yang menciptakan spectrum holes atau white spaces. Dalam konteks ini, teknologi Cognitive radio (CR) menjadi penting karena memungkinkan pengguna sekunder (secondary user) untuk mengakses dan menggunakan spectrum holes tanpa mengganggu pengguna primer (primary user). CR memungkinkan adaptabilitas perangkat radio dengan memanfaatkan cognitive cycle, dengan tahap utamanya adalah Spectrum sensing, di mana perangkat CR mencari spectrum holes dalam spektrum radio yang tersedia. Tahap berikutnya, Spectrum analysis dan Spectrum Decision, memungkinkan CR untuk mengoptimalkan penggunaan spektrum sesuai dengan kondisi yang ditemui. Paper ini bertujuan untuk melakukan tinjauan singkat terhadap implementasi CR, khususnya pada aspek spectrum sensing. Kami mengevaluasi berbagai teknik spectrum sensing, mengidentifikasi kelebihan, kekurangan, serta tantangan yang dihadapi. Dengan teknologi CR, pemborosan sumber daya spektrum dapat diminimalkan dan efisiensi komunikasi nirkabel dapat ditingkatkan. Paper ini memberikan pemahaman mendalam tentang pengembangan terbaru dalam spectrum sensing pada jaringan radio kognitif, serta memberikan panduan bagi penelitian dan implementasi di masa depan.
A FAN SPEED CONTROLLER USING IOT BASED ON RASPBERRY Pi AND SMARTPHONE Wahjudi, Dody; Tri, Watiningsih; Sobirin, Abdul Aziz; Daramawan, Isra' Nuur; Prasetyo, Rahardian Luthfi
Journal of Electronic and Electrical Power Applications Vol. 5 No. 1 (2025): JEEPA Volume 5 Nomor 1
Publisher : Program Studi Teknik Elektro Universitas Peradaban

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58436/jeepa.v5i1.2274

Abstract

Advences is eletronic techonology have helpen in the development of system that make things easier. One off them is the application of a fan sped control system using a smartphone and knowing number of RPM for each level. This study taks the topic of fan speed control devices and determines the number of rpm for each level using an infrared sensor using an IOT-based nodemcu microcontroller. The purpose of this research is to find out how to design a fan speed control device using an internet of thing-based Raspberry and to find out how the system works on a fan speed control device and find out what the rpm is using an Internet of Things-based Raspberry. The design of a fan speed rpm regulator has been successfully designed and can be applied at home using the IoT system. In the design there is an error of 9.36% at the raspberry input voltage and 17.64% at the raspberry output, 2.3% relay input and 1.84% relay output, 3.4% ESP-01 module input and 1.5 % output on the ESP-01 module, 3.12% infrared input and 65.8% infrared output..
DESIGN AND CONSTRUCTION OF A TEMPERATURE AND HUMIDITY AUTOMATION SYSTEM IN A MUSHROOM HOUSE USING RASPBERRY PI Sudaryanto, Eko; Wahjudi, Dody; Daramawan, Isra' Nuur; Prasetyo, Rahardian Luthfi; Sukowati, Irawan Dharma; Setiawan, Dwi Agus
Journal of Electronic and Electrical Power Applications Vol. 5 No. 1 (2025): JEEPA Volume 5 Nomor 1
Publisher : Program Studi Teknik Elektro Universitas Peradaban

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58436/jeepa.v5i1.2275

Abstract

Air temperature and humidity factors can affect the growth and development of oyster mushroom plants. Ideally, oyster mushroom cultivation in highland areas has a low temperature, ranging from 22-28 ° C and humidity> 70%, if the cultivator wants to develop oyster mushroom cultivation has land / location in the lowlands which tends to have high temperatures, the mushrooms will die easily. In lowland locations the average temperature is 33-37 ° C, so there is a need for a tool that can control and monitor the humidity and temperature of the mushroom cultivation room, so that the cultivation room gets the ideal temperature. In this research, the author makes a monitoring system for air temperature and humidity using a DHT-11 sensor in Internet of Things-based oyster mushroom cultivation in an oyster mushroom cultivation house, if the temperature in the room is detected> 28 ° C, the Raspberry Pi microcontroller will give orders to the relay to turn on the fan and water pump. Fans and water pumps function to increase humidity and reduce temperature. This tool can certainly make it easier for us to monitor and control the temperature in the room, so that the temperature in the room can be maintained, so that oyster mushrooms can grow well and have good quality too.
Rancang Bangun dan Evaluasi Sistem Peringatan Dini Panel Pompa Air Pamsimas Berbasis Esp32 dan Telegram Bot Prasetyo, Rahardian Luthfi; Darmawan, Isra’ Nuur; Nurdiniyah, Elsa Sari Hayunah; Sucipto
J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Vol. 10 No. 1 (2025): J-Proteksion
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jp.v10i1.3580

Abstract

Ketersediaan air bersih di wilayah pedesaan melalui program PAMSIMAS sering terkendala oleh habisnya token listrik, kegagalan pompa, dan trip overload yang menyebabkan terganggunya pasokan air bagi komunitas. Penelitian ini bertujuan merancang dan memvalidasi sistem peringatan dini panel kontrol pompa PAMSIMAS berbasis mikrokontroler ESP32 dan Telegram Bot, dengan target lag time notifikasi di bawah 10 detik. Metode penelitian meliputi desain dan implementasi perangkat keras (sensor arus ACS712, sensor tegangan ZMPT101B, relay, UPS cadangan) serta pemrograman firmware ESP32 untuk pembacaan sensor dan pengiriman pesan melalui API Telegram. Pengujian dilakukan dalam tiga tahap: unit testing laboratorium, integrasi end-to-end dengan 12 skenario panel, dan uji lapangan selama 14 hari di lokasi Sidabowa. Hasil menunjukkan rata-rata lag time 5,01 detik (std=0,95 s), akurasi deteksi 98,0%, false positive rate 1,5%, serta stabilitas operasi dalam simulasi pemadaman listrik dan overload. Pengalaman pengguna mengindikasikan tingkat kemudahan tinggi dalam penggunaan perintah teks dan format notifikasi. Kesimpulannya, sistem ini efektif, terjangkau, dan mudah direplikasi, menawarkan solusi IoT-Chatbot untuk meningkatkan keandalan layanan air PAMSIMAS. Rekomendasi meliputi perluasan uji di berbagai jaringan seluler dan integrasi SMS fallback untuk memperkuat robustness komunikasi.
Comparative Analysis of Carbon-Neutral District Heating Solutions Incorporating Waste Heat Recovery and Geothermal Exchange in Tropical Urban Settings Rahardian Luthfi Prasetyo; Isra' Nuur Darmawan; Kholistianingsih
Green Engineering: International Journal of Engineering and Applied Science Vol. 2 No. 1 (2025): January: Green Engineering: International Journal of Engineering and Applied Sc
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70062/greenengineering.v2i1.258

Abstract

This research investigates the potential of integrating waste heat recovery and geothermal exchange within district heating systems as a carbon-neutral energy solution tailored to tropical urban settings. Tropical climates present unique challenges for heating, ventilation, and air conditioning (HVAC) systems, including high humidity, temperature fluctuations, and increasing energy demands, particularly for cooling. This study aims to address these challenges by proposing a hybrid district heating system that combines renewable energy sources to improve energy efficiency and reduce carbon emissions. The methodology includes thermal and hydraulic modeling, performance simulation of the hybrid system under tropical climate conditions, and emission and energy efficiency analysis. The results indicate that the hybrid system significantly reduces energy consumption and carbon emissions compared to traditional heating systems, with waste heat recovery optimizing energy use and geothermal exchange enhancing system efficiency. The comparison with conventional systems and other environmentally friendly alternatives reveals that the hybrid system offers a cost-effective, sustainable solution for tropical urban areas. The study concludes that integrating waste heat recovery and geothermal exchange is feasible and can contribute to the creation of carbon-neutral cities. Future research should focus on optimizing geothermal systems in tropical climates and exploring further integration with other renewable energy sources to enhance system performance and sustainability.
Analisis Berbasis Pemodelan Urban terhadap Proyeksi Kebutuhan Energi Listrik pada Pengembangan Bandar Udara Jenderal Besar Soedirman Purbalingga Darmawan, Isra' Nuur; Kholistianingsih, Kholistianingsih; Prasetyo, Rahardian Luthfi; Irvansyah, Mokhamad; Pramudhipa, Dimas Rendra
Vortex Vol 7, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v7i1.3803

Abstract

Bandar udara merupakan simpul transportasi strategis yang memerlukan dukungan infrastruktur energi listrik yang andal dan berkelanjutan. Di Indonesia terdapat 367 bandar udara aktif, salah satunya Bandar Udara Jenderal Besar Soedirman Purbalingga yang masih berada pada tahap pengembangan fasilitas. Kondisi bangunan yang belum sepenuhnya permanen menuntut perencanaan kebutuhan energi listrik secara komprehensif guna mendukung peningkatan pelayanan. Penelitian ini bertujuan memproyeksikan kebutuhan energi listrik kawasan pengembangan bandar udara melalui simulasi menggunakan perangkat lunak Rhinoceros dan Urban Modeling Interfaces. Hasil simulasi menunjukkan nilai Floor Area Ratio sebesar 0,02 dengan rata-rata konsumsi energi operasional 173 kWh/m²/tahun, yang masih memenuhi standar keberlanjutan ASEAN-USAID. Total kebutuhan energi listrik mencapai 4.323.719,87 kWh/tahun, dengan beban terbesar berasal dari sistem pendingin sebesar 47,82%. Analisis pencahayaan alami, emisi karbon, dan mobilitas menunjukkan bahwa kawasan pengembangan masih berada dalam batas aman dan berkelanjutan.
KLASIFIKASI PARU-PARU PADA CITRA SINAR-X COVID-19 MENGGUNAKAN SEGEMENTASI OTSU, EKSTRAKSI FITUR GLCM, DAN SUPPORT VECTOR MACHINE Irawan Dharma Sukowati; Dody Wahjudi; Isra' Nuur Darmawan; Rahardian Luthfi Prasetyo
Teodolita: Media Komunkasi Ilmiah di Bidang Teknik Vol 26, No 2 (2025): Teodolita: Media Komunkasi Ilmiah di Bidang Teknik
Publisher : Fakultas Teknik, Universitas Wijayakusuma Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53810/jt.v26i2.724

Abstract

Lung damage due to Covid-19 can be analyzed through chest X-ray images, but manual interpretation is subjective. This study aims to classify lung damage in Covid-19 X-ray images using Gray Level Co-occurrence Matrix (GLCM) texture feature extraction and machine learning methods. The dataset consists of 100 labeled X-ray images stored in Excel and CSV formats. The research stages include image preprocessing, GLCM feature extraction, model training, and evaluation using precision, recall, f1-score, and accuracy. The results show that the model is capable of classifying with fairly good accuracy even though the test data used is only a portion of the dataset. The SVM model used produces an accuracy of 57% on the test data with fairly stable classification performance. This approach has the potential to be used as a support system for diagnosing lung damage due to Covid-19.
Co-Authors Ahmad Nugroho Jati Aisya Nur Aulia Yusuf Arif Nugraha Hernanjaya Daramawan, Isra' Nuur DARMAWAN, ISRA' NUUR Darmawan, Isra’ Nuur Dody Wahjudi Dody Wahjudi Dwi Agus Setiawan Eko Sudaryanto I Made Adhi Wiryawan Irawan Dharma Sukowati Irvansyah, Mokhamad Isra' Nuur Darmawan Isra' Nuur Darmawan Isra' Nuur Darmawan Iswandi Kholistianingsih ., Kholistianingsih Muhammad Ibkar Azki Himmawan Nurdiniyah, Elsa Nurdiniyah, Elsa Sari Hayunah Nurul Kholisatul Ulya Pramudhipa, Dimas Rendra Rahayu, Eny Sukani Rasyida Shabihah Zukron Aini Sandhy Dhannova Sandy Prasetyo Deniawan Putra Siti Shofiyatun Sobirin, Abdul Aziz Sucipto Tri Watiningsih, Tri Yulita Kartika Sari