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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) Bulletin of Electrical Engineering and Informatics Angkasa: Jurnal Ilmiah Bidang Teknologi Buletin Ilmiah Sarjana Teknik Elektro KURVATEK Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Indonesian Journal of Electrical Engineering and Computer Science SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Indonesian Community Journal Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Oni Yuliani
Institut Teknologi Nasional Yogyakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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RANCANG BANGUN SISTEM INFORMASI OBYEK WISATA BERBASIS WEB MENGGUNAKAN METODE USER CENTERED DESIGN (UCD) Yuliani, Oni; Prasojo, Joko
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 7, No 2 (2015): November
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (293.784 KB)

Abstract

The development of todays technology has been developing very rapidly and carry a very big change because with the technology information can be obtained quickly, accurately and not limited by time and place. One o f the growing sectors in technology development is in the field of tourism which contributes to distribute information about the attractions more interactive, especially through Internet technology. Yogyakarta has a variety of tourist attractions that are so beautiful, but not many people know the various tourist attractions in the area. Information on tourist places will be known if given a forum to exchange information on the matter in the form of a website. In order to generate tourism website in accordance with the wishes of users, the necessary methods of User Centered Design (UCD) based to the user. It is intended to provide information for tourists so it will be easier to plan excursions according to what they want without hesitation choose the desired attraction. Tourism information system was built using PHP as a programming language and MySQL as a database manager. This information system design using the UCD that engage users by providing input in the form of a questionnaire. This information system contains the profiles sights, means of transportation used and distance traveled. Other facilities that can be enjoyed for information about travel agents who can serve a trip out of town, and the inn (hotel). To implement this system needs the previous test program testing and system testing and then be evaluated. The information system created is a system that is capable of displaying objects on the map and provide information on the map if the object is selected, the user can view more detailed position of an object to be searched. For site owners can perform additional object data without having to perform the construction site from scratch, in this case both the data on a map or information. By making this system the objects displayed on the map always updates that facilitate and assist the user in doing excursions in Yogyakarta.
Teaching power system stabilizer and proportional-integral-derivative impacts on transient condition in synchronous generator Sugiarto Kadiman; Oni Yuliani; Trie Handayani
Bulletin of Electrical Engineering and Informatics Vol 10, No 5: October 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i5.3087

Abstract

Understanding the concepts based on problem solving is not an easy methodology in teaching the impact of power systems stabilizer (PSS) on transient synchronous generator using MATLAB capability. Experiments conducted in simulating sessions play an important role in this teaching. This simulation can simulate power system stability behavior with reasonable accuracy in less time. This transient phenomenon of a power system utilizing synchronous generator and modelling by fully three-phase model with changes in stator flux linkages neglected is analyzed by employed single machine infinite bus taken to the power system. Whereas a power system stabilizer which consist of a wash-out circuit, two stages of compensation, a filter unit, and a limiter, is applied to control voltage and frequency of power systems in transient condition. Proportional-integral-derivative (PID) controller tuned by Ziegler-Nichols’s method is cascaded to conventional PSS in order to enhance the response time of system while providing a better result in damping for oscillation. This gives the clear idea about PSS and PID controller impacts on transient synchronous generator and its enhancement to the students of electrical engineering program, Institut Teknologi Nasional Yogyakarta.
RANCANG BANGUN SISTEM INFORMASI OBYEK WISATA BERBASIS WEB MENGGUNAKAN METODE USER CENTERED DESIGN (UCD) Oni Yuliani; Joko Prasojo
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 7, No 2 (2015): November
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (293.784 KB) | DOI: 10.28989/angkasa.v7i2.158

Abstract

The development of today's technology has been developing very rapidly and carry a very big change because with the technology information can be obtained quickly, accurately and not limited by time and place. One o f the growing sectors in technology development is in the field of tourism which contributes to distribute information about the attractions more interactive, especially through Internet technology. Yogyakarta has a variety of tourist attractions that are so beautiful, but not many people know the various tourist attractions in the area. Information on tourist places will be known if given a forum to exchange information on the matter in the form of a website. In order to generate tourism website in accordance with the wishes of users, the necessary methods of User Centered Design (UCD) based to the user. It is intended to provide information for tourists so it will be easier to plan excursions according to what they want without hesitation choose the desired attraction. Tourism information system was built using PHP as a programming language and MySQL as a database manager. This information system design using the UCD that engage users by providing input in the form of a questionnaire. This information system contains the profiles sights, means of transportation used and distance traveled. Other facilities that can be enjoyed for information about travel agents who can serve a trip out of town, and the inn (hotel). To implement this system needs the previous test program testing and system testing and then be evaluated. The information system created is a system that is capable of displaying objects on the map and provide information on the map if the object is selected, the user can view more detailed position of an object to be searched. For site owners can perform additional object data without having to perform the construction site from scratch, in this case both the data on a map or information. By making this system the objects displayed on the map always updates that facilitate and assist the user in doing excursions in Yogyakarta.
Abdurachman, Lukmanul H., Herri G., (2014), Penerapan Pusat Listrik Tenaga Surya (PLTS) sebagai Sumber Energi Pompa Sirkulasi Air Tambak Ikan Air tawar di Desa Pagelaran Pringsewu Lampung, Unila, Lampung. Mukhsin, M. , (2010), Simulasi Alat Pemberi Pakan dan Pengendali kincir Air yang berdasarkan Suhu dan Kadar Oksogen pada kolam ikan Gurami Berbasis MCU AT89C51, Widya Teknika Vol.18 No.1; Maret 2010, ISSN 1411 – 0660 : 40 - 43 Universitas Widyagama Malang. Tugino, (2012), Pembuatan Alat Pemberi Oni Yuliani; Joko Prasojo
Retii Prosiding Seminar Nasional ReTII ke-11 2016
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Sistem informasi akademik sebuah universitas merupakan sebuah sistem penting yang menjadi pendukung dalam kegiatan perkuliahan karena digunakan oleh hampir semua elemen di universitas, baik itu mahasiswa, dosen, staf dan pimpinan. Untuk mengetahui sejauh mana sistem tersebut telah digunakan dengan baik maka harus dilakukan Evaluasi sistem. Evaluasi terhadap sistem informasi yang telah dibangun perlu dilakukan salah satunya untuk mengetahui bagaimana kegunaan (usability) sistem informai tersebut bagi pengguna. Selain itu evaluasi sistem informasi sangat penting dilakukan untuk menghasilkan sistem yang mudah, efektif, efisien, dan tepat guna bagi pengguna, dan akan sangat bermanfaat bagi Sistem informasi akademik sebagai salah satu dasar pengembangan situs web yang dimiliki.Sistem  Informasi Akademik berbasis Web  (SiAkad) telah digunakan selama  hampir 5 tahun di STTNAS Yogyakarta sejak tahun 2011. SiAkad berbasis web yang dikenalkan kepada pengguna di STTNAS Yogyakarta diterapkan untuk membantu penyelenggaraan kegiatan akademik bagi civitas akademik (user) di STTNAS Yogyakarta. User dapat memanfaatkan SiAkad untuk melakukan aktivitas pembelajaran pada semester yang akan berlangsung sesuai dengan jumlah dan ketentuan yang berlaku.Penelitian dengan judul Evaluasi Usability Situs Web Sistem Informasi Akademik bertujuan untuk mengetahui apa­kah pengguna merasakan pengaruh  kriteria usability Jacob Nielsen yaitu learnability, efficiency, memorability, errors, dan satisfaction terhadap penggunaan situs web Sistem Informasi Akademik STTNAS Yogyakarta. Penelitian ini mengambil sampel mahasiswa STTNAS yang sedang dan atau pernah menggunakan SiAkad. Data dalam penelitian di uji  dengan alat  analisis SEM  (Struktural  Equation Model). SEM adalah alat  analisis statistik yang dipergunakan  untuk menyelesaikan model  penelitian bertingkat  secara  serempak. SEM dapat  dipergunakan untuk menyelesaikan persamaan dengan variabel  yang membentuk jalur (path) .Hasil penelitian diharapkan dapat memberikan informasi bahwa dengan menggunakan Usability dapat menjelaskan faktor-faktor yang mempengaruhi penerimaan penggunaan sistem informasi akademik di STTNAS Yogyakarta. sehingga  dapat memberikan kemanfaatan dan kemudahan bagi pengguna. Kata Kunci : Usability, SiAkad, SEM  (Struktural  Equation Model)
Sistem Informasi Laboratorium Berbasis SMS Oni Yuliani
Retii Prosiding Seminar Nasional ReTII ke-12 2017
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Sistem informasi Laboratorium adalah sistem yang melibatkan Pasien, Admin dan Laboran, sehingga menghasilkan informasi bagi pasien. Pemberian informasi secara detail merupakan salah satu upaya yang harus dilakukan demi kepuasan pasien. Untuk itu dibutuhkan suatu sistem yang dapat memberikan informasi dengan menggunakan fasilitas layanan SMS.Tujuannya adalah untuk memudahkan pasien dalam pengaksesan informasi Laboratorium Kesehatan. Materi penelitian ini terdiri atas komponen-komponen yang mendukung pembuatan sistem informasi perangkat-lunak Visual Basic dan MySQL, Modul Gammu, serta tentang layanan pesan singkat (Short Message Service, SMS). Metode yang digunakan antara lain: pengumpulan data, perancangan sistem, pembuatan program, dan pengujian program.  Proses pengujian dilakukan dengan cara melakukan pendaftaran atau hasil laboratorium melalui SMS.Hasil penelitian diwujudkan dengan bentuk sistem informasi berbasis desktop dan terhubung dengan perangkat telepon genggam dengan layanan pendaftaran pasien untuk pengambilan sampel darah dan hasil dari sampel darah. Proses pengujian dilakukan dengan cara melakuakan pendaftaran atau hasil laboratorium melalui SMS. Hasil yang didapat dari pengujian menunjukkan sistem ini berjalan dengan baik. Berdasarkan hasil yang didapat sistem ini cukup layak untuk digunakan karena cara menjalankan program mudah dan dapat digunakan pada PC maupun Laptop, dan program dapat memberikan alternatif kepada pengguna (pasien) yang cukup sibuk untuk proses pendataran pasien dan mengetahui Hasil dari Laboratorium Kesehatan.Kata kunci: Perancangan, Sistem, SMS Gateway, Visual Basic, MySQL, Gammu.
Rancang Bangun Sistem Detektor Kebakaran dan Kebocoran Gas dengan Internet of Things Pada Industri Migas Joko Firdaus; Oni Yuliani; Joko Prasojo
Retii Prosiding Seminar Nasional ReTII ke-13 2018
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Bahaya kebakaran adalah salah satu resiko bahaya yang dapat terjadi pada industri minyak dan gas bumi. Untuk itu diperlukan suatu sistem yang dapat mendeteksi gejala awal timbulnya kebakaran dan dapat melakukan tindakan pemadaman jika terjadi kebakaran.  Tujuan penelitian “Rancang Bangun Sistem Detektor Kebakaran dan Kebocoran Gas Berbasis Internet of Things(IOT) pada Industri Minyak dan Gas Bumi” adalah membuat suatu alat menggunakan Arduino Wemos yang dilengkapi sensor untuk mendeteksi asap, gas dan api, memberikan peringatan kepada operator melalui alarm dan HMI, serta mengaktifkan Shutdown System dan Diesel Fire Water Pump untuk melakukan pemadaman kebakaran. Sistem dibuat mengikuti konsep Wireless Sensor Network dengan memanfaatkan jaringan Wifi. HMI dibuat menggunakan aplikasi website sehingga dapat diakses dari beberapa tempat berbeda. Pada pengujian fungsi alat didapatkan hasil bahwa modul pengirim mampu mendeteksi adanya asap, gas dan api, serta mengirimkan data hasil pembacaan sersor ke basis data. Selanjutnya HMI akan menampilkan data pada basis data berupa indikator dari masing-masing sensor. Modul penerima mampu mengambil data dari basis data dan mengkatifkan alarm, Shutdown System, serta diesel Fire Water Pump. Kata Kunci: Arduino Wemos, Sensor, Aplikasi Web, Wireless Sensor Network
Identifikasi Wajah Menggunakan Enkoding Data Histogram of Oriented Gradient Yusuf Ari Bahtiar; Oni Yuliani; Arif Basuki
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Kecanggihan teknologi berdampak pada seluruh elemen kehidupan. Pengolahan citra menjadi salah satu bidang yang sangat populer. Salah satunya diterapkan pada identifikasi wajah seseorang yang digunakan sebagai keamanan data, ruangan dan presensi harian. Menggunakan algoritma viola-jones sebagai library deteksi keberadaan wajah yang digerakan dengan metode Histogram of Oriented Gradient yang mengambil nilai rerata gradien dari setiap kontur wajah. Proses dimuat dalam media raspberry pi 3B yang terintegrasi dengan pi camera sebagai detektor wajah. Sampel wajah dinormalisasi ke ukuran 313 x rasio tetap piksel, menghasilkan tingkat kecocokan sebesar 74,629 % dari keseluruhan rerata hasil pengujian.
Higher order model of synchronous generator Sugiarto Kadiman; Oni Yuliani
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 14, No 3: September 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v14.i3.pp1442-1449

Abstract

Synchronous generator conventional model accurately describes only the stator circuit. Concerning the transients for rotor quantities, for example rotor voltage, rotor current, and rotor magneto-motor force, conceivable predetermined with acceptable accuracy if calculations are created on equivalent model properly on consideration of field and damper together with stator circuits. Unfortunately, it was recognized that simulated responses using conventional model with calculated machine parameters often did not match well with actual measured responses, particularly in the quantity’s rotor winding. For this intention, the newly method to producing the rotor circuit is to model it as well as the lines that conventionally viewed as the partition of current paths from the physical construction. Besides the physical field and damper circuits, a third circuit for the eddy currents induced in the pole surface could also be added. The all conclusions prove the correctness of synchronous generator model.
Model development of bond graph based wind turbine Sugiarto Kadiman; Oni Yuliani
Indonesian Journal of Electrical Engineering and Computer Science Vol 33, No 2: February 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v33.i2.pp715-726

Abstract

Just recently, wind energy continues to be one of most important renewable energy resources, by cause of its production is ecologically friendly; for that reason, the technology built for the renewable energy production by way of wind turbines takes excessive challenges in the study. Due to several physical domains prevailing in wind turbine, namely aerodynamical, mechanical and electrical, the modeling of wind turbine is problematic; thus, modeling based on physical techniques has a superior reliability in these circumstances. One of these approaches is bond graph modeling that model system evolved from conservation law of both of mass and energy comprising in the structures. This study presents modeling the parts of bond graph-based wind turbine. Then, sub models are connected together to attain the entire model of wind turbine for simulation based on 20-Sim software. The proposed wind turbine is 2.5 kW of variable velocity wind turbine with three blades, gearbox, tower, and doubly-fed induction generator type. The effectiveness of bond graph modeling system on wind turbine has been proven in simulation results.
Innovative Internet of Things-based Integrated Liquid Waste Monitoring for Sustainable Batik Industry Qodri, Muhammad Fatih; Pratama, Bagus Gilang; Yuliani, Oni; Permana, Irvan Ardhi
SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Vol. 5 No. 1 (2024)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/spekta.v5i1.9009

Abstract

Background: Batik, a UNESCO-recognized art form, experiences rising production demands. However, traditional waste disposal methods pollute waterways and degrade soil. This study addresses this concern. Contribution: We implemented an Internet of Things (IoT)-based liquid waste monitoring system in CV Smart Batik Indonesia to promote a green economy and sustainable practices. The system monitors critical waste parameters (temperature, pH, TDS, DO, turbidity) in real-time. Method: We integrated sensors to collect waste data, which is then transmitted through an internet network for monitoring. Results: The system offers automated monitoring with notifications via a website or mobile application while ensuring data confidentiality through Wireguard protection. Conclusion: This community service activity demonstrates the effectiveness of IoT-based monitoring systems in promoting sustainable batik production by ensuring compliance with environmental standards and reducing human workload in waste monitoring
Co-Authors Arif Basuki Bagus Gilang Pratama, Bagus Gilang Budi Utama, Budi Joko Firdaus Joko Prasojo Kadiman, Sugiarto Karan Gunawan Nawawi, Ilham Permana, Irvan Ardhi Putri, Silfia Dwi Qodri, Muhammad Fatih Ramadhani, Nanda Ratna Kartikasari Sely Novita Sari Sugiarto Kadiman Suwarti, Diah Tito Tiyastono Taufik Trie Handayani, Trie Yogi Sarwo Wibowo Yusuf Ari Bahtiar