Huda Ubaya
Sriwijaya University

Published : 14 Documents
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Design of Prototype Payment Application System With Near Field Communication (NFC) Technology based on Android Ubaya, Huda
Computer Engineering and Applications Journal (ComEngApp) June 2012
Publisher : Computer Engineering and Applications Journal (ComEngApp)

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Abstract

Since the late 1990s, people have enjoyed a comfortable lifestyle. Mobile devices supported by the development of wireless networks have spread throughout the world. People can get information, order tickets, download songs and perform commercial transactions, called mobile commerce. Mobile commerce applications become the most popular application for mobile device users who want to do business and financial transactions easily and securely, anytime and anywhere they are. Today the use of physical cash is experiencing a decline in popularity in the business world, because it is being replaced by non-physical payments are often called electronic money (e-money). An important technology behind mobile payments is called Near Field Communication (NFC). As an indication that the NFC has tremendous business potential, leading companies like Nokia, Microsoft, Visa Inc., and MasterCard Worldwide and NXP Semiconductors, is actively engaged on them. Payment processing integrated with NFC technology based mobile operating system that is a trend today is Android that support NFC technology is version 2.3.3 Gingerbread. The prototype application is designed to pay for 2 on the user side of the user as consumer and the merchant side as a trader or seller by using the handset that already have NFC technology is Google Samsung Nexus S. Pay an application prototype also implements the concept of security in e-commerce transactions by using the protocol-to-Tag Tag so that the user needs for security and comfort during the financial transaction are met.
Konsep Model, View, dan Controller (MVC): Penerapannya Pada Pemecahan Pengembangan Perangkat Lunak Ujian Online ., Ermatita; Ubaya, Huda; Indah, Dwi Rosa
Jurnal GENERIC Vol 4, No 1 (2009)
Publisher : Fakultas Ilmu Komputer - Universitas Sriwijaya

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Konsep Model, View, dan Controller (MVC): Penerapannya Pada Pemecahan Pengembangan Perangkat Lunak Ujian Online
Implementation Color Filtering and Harris Corner Method on Pattern Recognition System Zarkasi, Ahmad; Sutarno, Sutarno; Ubaya, Huda; Fajar, Muhammad
Computer Engineering and Applications Journal Vol 6 No 3 (2017)
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18495/comengapp.v6i3.219

Abstract

Color recognition and angle detection of underwater objects can be done with the help of underwater robots (ROV) with image processing applications. The processing of the object's image is recognizing various shapes and colors of objects in the water. In this research, the color filtering and Harris corner method will be designed, studied, tested and implemented. The color filtering method is used to recognize object color patterns, while the Harris Corner method is used to detect angles of underwater objects. Then classify images to get data on environmental pattern recognition. The color patterns tested include red, green, yellow and blue. the results obtained are all color patterns can be recognized well. while the shape of the object being tested includes cubes, triangles, rectangles, pentagons, and hexagons. the results of testing some of the shapes can be detected with a good angle and others still have errors. This is because testing the form of objects is done in various positions, such as from the front, right, left, up and below. 
Konsep Model, View, dan Controller (MVC): Penerapannya Pada Pemecahan Pengembangan Perangkat Lunak Ujian Online ., Ermatita; Ubaya, Huda; Indah, Dwi Rosa
Jurnal GENERIC Vol 4, No 1 (2009)
Publisher : Fakultas Ilmu Komputer - Universitas Sriwijaya

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Konsep Model, View, dan Controller (MVC): Penerapannya Pada Pemecahan Pengembangan Perangkat Lunak Ujian Online
First Person View on Flying Robot For Real Time Monitoring Ubaya, Huda; Iqbal, Muhammad
ICON-CSE Vol 1, No 1 (2014)
Publisher : ICON-CSE

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Abstract

Radio control nowadays not only control the car but can control the copter. First Person View is a way to change the viewpoint of the controller looks like in the copter. By using radio telemetry communication that sends video data from the camera on the copter and will be shown on a display on ground station. Radio telemetry communication will use wideband modulation techniques to transmit video at high speed until the video is shown to be a real time video. The transmitter has been designed which is able to transmit video data up to 1 kilometers. Good quality video data can be sent about 500 meters below. measurement of Peak Signal to Noise Ratio (PSNR) that distance and wall are greatly affect the quality of the video. Deficiencies in the delivery of video communication can be minimized by increasing the gain and transmission power of the radio frequency telemetry and matching between the video telemetry radio and radio control copter.
Sensor Fusion and Fuzzy Logic for Stabilization System of Gimbal Camera on Hexacopter Ubaya, Huda; Mawarni, Hanipah
ICON-CSE Vol 1, No 1 (2014)
Publisher : ICON-CSE

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Hexacopter has the ability to fly in the air can be used as an air monitoring system. To get the video or images that have good quality then it is used gimbal camera as a movement stabilizer and vibration damping. Stabilization System consists of two axes, x axis (roll) and y axis (pitch) and has a 2-axis camera gimbal controller which is have microcontroller ATMEGA 328 that serves to regulate the stability of the gimbal camera. The Input of this system is derived from accelerometer and gyroscope sensors that are within the sensor module MPU 6050, to determine the tilt position of hexacopter. The output of this sensor will be filtered first using complementary filters that serve to reduce noise of both sensors and complement advantages and disadvantages of each sensor. The output of this system is the movement of two brushless motors, brushless roll and pitch, that are controlled with Sugeno fuzzy logic method because it has a simple calculation so the response is faster and more suitable for real-time applications. From the case study with the data of the roll at by 35 º and pitch at by 17 º resulting PWM duty cycle value by -69.47% roll and pitch resulting PWM duty cycle value by -25.5 %, where (-) represents the direction of movement. 
Penentuan Dosis Pupuk Tanaman memanfaatkan Hasil Foto Udara Menggunakan metode Fuzzy Tsukamoto Oktavian, Dian; Sukemi, Sukemi; Ubaya, Huda
Annual Research Seminar (ARS) Vol 4, No 1 (2018): ARS 2018
Publisher : Annual Research Seminar (ARS)

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Dosis pupuk dapat diketahui melalui berbagai macam metode termasuk menggunkan hasil foto digital. Penelitian ini menggunakan hasil dari foto udara untuk menentukan dosis pupuk. Basis aturan untuk menentukan jumlah cluster guna mengetahui jumlah dosis pupuk. Penggunaan metode ini dalam tingkat akurasi menentukan dosis pupuk tanaman adalah sebesar 97,7% dibandingkan dengan proses yang bersifat konvensional
Pengaturan Gerakan Hover dan Roll pada Quadcopter dengan Menggunakan Metode PI Ziegler-Nichols dan PID Tyreus-Luyben ubaya, huda; Tutuko, Bambang; Richardson, Borisman; Sutrimo, Sutrimo
Annual Research Seminar (ARS) Vol 2, No 1 (2016)
Publisher : Annual Research Seminar (ARS)

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Quadcopter merupakan jenis robot terbang yang bergerak dengan menggunakan empat buah motor dan memiliki empat gerakan dasar. Diantara gerakan tersebut adalah gerakan hover dan gerakan roll. Gerakan hover dipengaruhi oleh kecepatan putar seluruh motor secara bersamaan sehingga menghasilkan gerakan berpindah tempat dari bawah ke atas dan sebaliknya sedangakan gerakan roll adalah gerakan rotasi pada sumbu x quadcopter. Agar quadcopter dapat melakukan pergerakan tersebut dengan baik, dibutuhkan pengendali. Pengendali yang digunakan pada penelitian ini adalah pengendali PI dan PID. Pengendali PID terdiri dari proportional gain , integral gain  dan derivative gain . Untuk menentukan nilai  proportional gain , integral gain , dan derivative gain , pada penelitian ini digunakan metode tuning Ziegler-Nichols untuk hover dan Tyreus-Luyben untuk roll. Didapatkan nilai pengendali dengan nilai proportional gain  sebesar 5,66914408 dan nilai integral gain  sebesar 0,05281733959 untuk gerakan hover sehingga menghasilkan grafik respon transient dengan overshoot 16%, rise time 3,75 detik, dan settling time 8 detik. Sedangkan untuk gerakan roll, nilai proportional gain  sebesar 67,11547084, nilai integral gain  sebesar 7,6267045, dan nilai derivative gain  sebesar 0,426113135.
Penerapan Metode Pelatihan Langsung (Doing by Learning) untuk Siswa SMA di Kecamatan Ilir Timur 1 Palembang Nurmaini, Siti; Ubaya, Huda; Tutuko, Bambang; Firdaus, Firdaus; Zarkasi, Ahmad
Annual Research Seminar (ARS) Vol 2, No 2 (2016): Special Issue : Penelitian, Pengabdian Masyarakat
Publisher : Annual Research Seminar (ARS)

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Robot halang rintang (avoider)  sebagai media pengenalan bidang robotika bagi bagi sekolah menengah atas Muhammadiyah 1 Palembang. Pelatihan ini akan dititik beratkan pada bagaiamana merakit dan membuat suatu aplikasi robot sederhana yang dilengkapi dengan sensor infra merah, kendali motor yang pemrogramannya menggunakan bahasa pemrograman C. Metode kegiatan yang digunakan dalam kegiatan ini yaitu metode pelatihan langsung (learning by doing) berupa pemaparan/presentasi, tutorial serta diskusi tentang bidang ilmu robotika, teknik disain sedernaha sebuah robot dan menjalankan aplikasi robot Halang Rintang (avoider) yang telah ditentukan. Sebelumnya diadakan pre test yang berupa tanya jawab, untuk mengetahui sejauh mana pengetahuan peserta sebelum mengikuti pelatihan dan praktek yang menitikberatkan pada implementasi robot Halang Rintang (avoider).  Post test dilakukan dengan menjalankan aplikasi yang telah dibuat oleh siswa pada halangan yang telah disiapkan . Untuk mengetahui tingkat penyerapan terhadap materi pelatihan yang diberikan oleh para pengajar atau pelatih dan bimbingan konsultasi, robot yang telah dibuat harus bekerja dengan baik sesuai dengan arahan yang diberikan.
Rancang Bangun Mesin Pencampur Warna Berbasis Pengolahan Citra dan Euclidean Distance Sutarno, Sutarno; Fasilah, Eka; Ubaya, Huda; Passarella, Rossi; Zarkasi, Ahmad
Annual Research Seminar (ARS) Vol 3, No 1 (2017): ARS 2017
Publisher : Annual Research Seminar (ARS)

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Penggunaan cat atau bahan pewarna pada beberapa bidang terus meningkat antara lain bidang seni lukis, otomotif, pertukangan dan perbengkelan, namum pilihan warna cat masih terbatas atau warna standar. Saat ini telah dikembangkan meisn pencampur warna, sehingga dapat dihasilkan pilihan warna yang lebih bervariasi. Penelitian yang dilakukan akan membuat rancang bangun mesin pencampur warna berbasis pengolahan citra dengan format warna RGB (red, green, blue) dan CMYK (cyan, magenta, yellow, black) dan metode klasifikasi euclidean distance menggunakan kamera sebagai sensor. Metode euclidean distance untuk menghitung selisih jarak nilai intensitas warna cat yaitu warna input dan warna dataset yang telah ada. Program dibuat dengan menggunakan perangkat lunak Microsoft Visual 2010 dengan bahasa pemrograman C++. Hasil pengujian dari penelitian ini didapatkan nilai error maksimum sebesar 31,37% dan nilai error minimum sebesar 4,32% atau tingkat akurasi tertinggi sebesar 95,68% dalam mengenali warna