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All Journal IPTEK Journal of Proceedings Series Perfecting a Video Game with Game Metrics Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Bulletin of Electrical Engineering and Informatics Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Bulletin of Electrical Engineering and Informatics Proceeding of the Electrical Engineering Computer Science and Informatics PROtek : Jurnal Ilmiah Teknik Elektro REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat
Imamul Muttakin
Universitas Sultan Ageng Tirtayasa
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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Journal : Perfecting a Video Game with Game Metrics

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Design and Simulation of Quadrature Phase Detection in Electrical Capacitance Volume Tomography Imamul Muttakin; Arbai Yusuf; Rohmadi Rohmadi; Wahyu Widada; Warsito P. Taruno
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 13, No 1: March 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v13i1.1299

Abstract

 Capacitance measurement accuracy is affected by phase conformity between signal and reference. This work describes phase detection scheme which is necessary for phase synchronization in tomography application. Core processing for calculating phase and amplitude of the detected signal was built on FPGA (Field-Programmable Gate-Array) platform. Phase shift demodulation algorithm employs IP core provided by Xilinx FPGA. Direct digital synthesizer (DDS), multiplier, accumulator, and CORDIC (coordinate rotation digital computer) modules were used as excitation-reference signal generator, signal multiplication, accumulation, and conversion to polar coordinate in order to conduct trigonometric operation respectively. Hardware design was emulated on MATLAB-Xilinx System Generator to observe its performance. Phase detection range 0-114.58o and mean absolute error 0.58o have been achieved. Data processing rate solely at digital signal stage was approximately 100data/s suitable for 32-channel electrical capacitance volume tomography (ECVT) system.
Exudate and Blood Vessel Feature Extraction in Diabetic Retinopathy Patients using Morphology Operation Siswo Wardoyo; Anggoro Suryo Pramudyo; Erika Diana Rizanti; Imamul Muttakin
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 14, No 4: December 2016
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v14i4.3714

Abstract

Diabetic Retinopathy is one of the retina complications caused by diabetic disease with observable symptoms such as emergence of exudate and new blood vessels. The tool used to screen it is a fundus camera. However, analyzing the fundus image should be done by doctor who is an expert and will require a lot of time. Therefore, automatic feature detection can assist doctor in processing the retinal image in analyzing diabetic retinopathy disease. The proposed method has been tested on the morphological operations of the fundus image from Cicendo Eye Hospital, Bandung. The calculation results on feature extraction exudate area has a range of 0 pixels for normal retinal image, 17-21213 pixel for retinal image NPDR, and 125-12299 retinal image pixel for PDR. The calculation results on the extraction area of blood vessels has a range of 13319-46681 pixel to the normal retina, the retinal image 7435-49938 pixel for NPDR, and 13.81-53.802 retinal image pixel for PDR.
Switch Configuration Effect on Stray Capacitance in Electrical Capacitance Volume Tomography Hardware Arba’i Yusuf; Harry Sudibyo S; Dodi Sudiana; Agus Santoso Tamsir; Imamul Muttakin; Wahyu Widada; Warsito P. Taruno
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 14, No 2: June 2016
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v14i2.3328

Abstract

Electrical capacitance volume tomography (ECVT) system uses six switches in one channel with configuration resembling “T” letter, so it is called “T-switch”. The working scheme of the switch can be explained in four different modes of operation, i.e. excitation mode, detection mode, ground mode, and floating mode. This research describes the effect of switch configuration to stray capacitance in ECVT hardware. Stray capacitance introduces parasitic signal from other sources; one of them is signal from another electrode at floating mode when the signal is still flowing to detection circuit. One channel, two channels, three channels, so on until thirty-two channels are connected to single detection circuit sequentially to investigate the effect of stray capacitance. Both simulation and experiment show the stray capacitance increases along with addition of channel corresponds to 0.046pF for each channel.
Co-Authors ., Rohmadi Adi Nugraha Agus Santoso Tamsir Aldi Muhamad Fikri Alfirdaus Zaharda Alia Shaliha Amany Alief Maulana Amany, Alia Shaliha Anggoro Suryo Pramudyo Annisa Sucianti Nurliany Arbai Yusuf Arbai Yusuf Arba’i Yusuf Ceri Ahendyarti David Abraham Dodi Sudiana Erika Diana Rizanti Fahrizal, Rian Harry Sudibyo Haryono, Didied Ibrahim Nawawi Jaga Sobar Julianto Mardiyanto, Mardiyanto Muhammad Sadikin Mulyadi, Rendi Rocky Alfanz Rocky Alfanz Rohmadi . Rohmadi Rohmadi Rohmadi Rohmadi romi wiryadinata Rusbana, Tb Bahtiar Sholehah, Amalia Shulhany M, Ahmad Siswo Wardoyo Siswo Wardoyo Taruno, Warsito P. Teguh Firmansyah Teguh Firmansyah Wahyu Widada Wahyu Widada Wahyu Widada Wahyuni Martiningsih Warsito P. Taruno Warsito P. Taruno Warsito P. Taruno Widada, Wahyu Wilda Annisa3 Yusuf, Arbai