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Risanuri Hidayat
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Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada Jl. Grafika No 2. Kampus UGM Yogyakarta 55281
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INDONESIA
Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Published by Universitas Gadjah Mada
ISSN : 23014156     EISSN : 24605719     DOI : 10.22146/jnteti
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Topics cover the fields of (but not limited to): 1. Information Technology: Software Engineering, Knowledge and Data Mining, Multimedia Technologies, Mobile Computing, Parallel/Distributed Computing, Artificial Intelligence, Computer Graphics, Virtual Reality 2. Power Systems: Power Generation, Power Distribution, Power Conversion, Protection Systems, Electrical Material 3. Signals, Systems, and Electronics: Digital Signal Processing Algorithm, Robotic Systems and Image Processing, Biomedical Instrumentation, Microelectronics, Instrumentation and Control 4. Communication Systems: Management and Protocol Network, Telecommunication Systems, Wireless Communications, Optoelectronics, Fuzzy Sensor and Network
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 644 Documents
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Pemanfaatan Deep Learning pada Video Dash Cam untuk Deteksi Pengendara Sepeda Motor Stephen Ekaputra Limantoro; Yosi Kristian; Devi Dwi Purwanto
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

The number of motorcyclists in Indonesia was 105.15 million in 2016. It made the Indonesian government difficult to monitor motorcyclists on the highways. Dash cam could be used as the alternative tool to detect motorcyclists when given the intelligence. One of the typical drawbacks in detecting objects is complex and varied feature. A convolutional neural networks (CNN) that was capable of detecting motorcyclists was proposed. CNN successfully classified the ship object with f1-score of 0.94. Sliding window and heat map were used in thispaper to search the localization and region of motorcyclists. Two experiments had been done in this paper. The goal of this paper was to set the best combination of CNN architecture and parameter. The first experiment consisted of three trained weights while the second experiment consisted of one trained weight. Weight peformances against test data in experiment 1 and experiment 2 were measured using f1-score of 0.977, 0.988, 0.989, and 0.986, respectively. From the experimental results using the sliding window, experiment 2 had a lower error rate to predict motorcyclists than experiment 1 because the training data on experiment 1 contained more and various images.
Analisis Simulasi Antena MIMO 4 4 Susunan Persegi dan Sirkular pada Frekuensi 15 GHz Fajar Wahyu Ardianto; Nachwan Mufti A.; Budi Syihabuddin
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

One of the frequency that becomes 5G candidate is 15 GHz. Utilizing high frequency can produce wider bandwidth but susceptible to reflection or scattering and it causes multipath fading. MIMO is believed to be able to fix the problem. Beside that, utilizing high frequency causes the antenna dimension become smaller so 5G technology requires an easily integrated antenna. Therefore, microstrip antenna becomes a suitable candidate for this technology. This paper discusses about rectangular and circular patch analysis for 5G radio access made into 1×2 array and added T-slotted patch to produce wider bandwidth and arranged four elements to form MIMO to reduce effects due to the multipath fading. The results show that the addition of a slotted-patch antenna in rectangular patch produces 2.3 GHz bandwidth in frequency range 14.3 – 15.6 GHz with minimal return loss of -23.91 dB, while in circular patch produces 2.8 GHz bandwidth in frequency range 14.5 – 17.3 GHz with minimal return loss of -19.19 dB. Maximum gain of rectangular and circular antennas are 10.30 dB and 9.95 dB, respectively, while mutual coupling values are -24.75 dB and -24.26 dB. Both patches produce same radiation patterns which are unidirectional and polarized linearly.
Implementasi Sistem Komunikasi Nirkabel OFDM Berbasis Software Defined Radio (SDR) Ida Anisah; Hendy Briantoro; Ahmad Zainudin; Desy Intan Permatasari
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Nowadays, wireless communication technology is developing rapidly. However, this technology still has some weaknesses, e.g. large bandwidth requirement and multipath fading. To overcome these weaknesses, MIMO OFDM technique is needed. This paper implements MIMO OFDM 2x2 communication system in Universal Software Radio Peripheral (USRP). The performance of MIMO OFDM 2x2 is shown by the throughput value. This value is compared to the throughput value of single carrier and SISO OFDM. The modulations used are BPSK, 4-QAM, and 16-QAM. In 4-QAM modulation, the throughput value of MIMO OFDM is significantly larger than throughput value of single carrier and SISO OFDM. The throughput value of single carrier communication system is 27.71 Mbit/s, while the throughput value of the SISO OFDM communication system is 60.27 Mbit/s, and the throughput value of the MIMO OFDM 2x2 communication system is 123.03 Mbit/s.
Penghematan Daya pada Sistem Komunikasi Kooperatif Two-Way dengan Pengaturan Rasio Data Rate Nasaruddin Nasaruddin; Didi Rahmadi; Rusdha Muharar
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Currently, many communication technologies use wireless media because it can provide seamless connectivity and mobile access. In the implementation, wireless communication system faces many challenges, one of them is fading. The effect of fading on a wireless channel will also add power consumption on mobile devices and can reduce the information signal power. However, fading can be overcome by using a cooperative communication system which is a method that utilizes antenna from other users (relays) with the principle of diversity, so the performance of wireless communication system can be improved. This paper proposes power saving on two-way cooperative communication system based on data rate ratio. The method of setting the value of this data rate ratio aims to minimize power consumption in a two-way cooperative communication system, i.e., a full-duplex communication system with quantized and forward (QF) relay protocol. To obtain a minimum power consumption, the ratio of the data rate must be set on the assumption that the value of the transmit power of each source and the relay is equal. The result shows that the system performance is improved, the system SNR value becomes lower, and the power is more efficient by adjusting the ratio of data rate compared to the conventional system without power control.
Unknown Input Observer untuk Robust Detection Sinyal Kesalahan terhadap Disturbance Menggunakan LMI Samiadji Herdjunanto
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Implementation of time scheduled maintenance is not suitable if it is applied for systems with many varieties of heavy workload and harsh environment, since on that condition components degrade earlier than those under normal condition. Therefore, it has been shifted to condition-based maintenance (CBM). One important aspect, among others, toward successfull implementation of CBM method is fault signal detection which is robust against disturbance. The proposed solution of the problem is to use Unknown Input Observer (UIO) where its parameters are chosen so that UIO can be used for fault signal detection which is robust against disturbance. The parameter values of UIO are calculated using linear matrix inequality (LMI) derived from Lyapunov stability requirement. To demonstrate the effectiveness of the proposed solution, simulation is performed on a separately-excited DC motor where its load has a step change and time-varying change. The result shows that a fault signal as a function of nonlinear state can be detected using UIO which is robust against both step and time-varying load of the DC motor.
Menuju Pengenalan Ekspresi Mikro: Pendeteksian Komponen Wajah Menggunakan Discriminative Response Map Fitting Ulla Delfana Rosiani; Priska Choirina; Surya Sumpeno; Mauridhi Hery Purnomo
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

The observations made in the study of micro-expression are to recognize and track the very subtle movements of certain facial areas and in a short time. In this study, the observation of movement is held in some areas of the face component. The facial and facial components detection is the pre-process stage on micro-expression recognition system. The goal at this stage is to get face and face components accurately and quickly on every movement of the video sequence or image sequence. The face landmark point of the Discriminative Response Map Fitting (DRMF) method can be used to get face components area accurately and quickly. This can be done because the facial landmark points used in this model-based method do not change when objects are moved, rotated, or scaled. The results obtained by using this method are accurate with a 100% accuracy value compared to the Haar Cascade Classifier method with an average accuracy of 44%. In addition, the average time required in the formation of facial component boxes for each frame is 0.08 seconds, faster than the Haar Cascade Classifier method of 0.32 seconds. With the results obtained, then the detection of facial components can be obtained accurately and quickly. Furthermore, the boxes of face components obtained are expected to display the appropriate data to be processed correctly and accurately in the next stage, feature extraction and the classification of micro-expression motion stage.
Pengukuran Ketebalan Lapisan Metal Pada Plastik Berbasis Sensor Inframerah Yaya Finayani; Muhammad Alhan; Sunaryo; Sudarno
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Plastic metalization process is carried out by heating the aluminum to its melting point in a vacuum so that the atoms and molecules will be evaporate and stick on to the plastic surface, then forming thin layer accross its surface. PT. Tomoko Daya Perkasa is one of the companies who performs plastic metalization. In doing this process, the company uses rewind machine and metallizing machine. PT. Tomoko Daya Perkasa uses OD-Meter to measure metal coating thickness. This tool is not embedded on the metallization machine. Therefore, a tool that can be mounted directly to metallizing machine is needed to monitor the thickness during the process of metalization. The metal layer thickness gauges are designed using the GP2Y1010AU0F infrared sensor and TSL2561 infrared receiver. Arduino and VB-NET software are used to create the program of the tool. Laboratory test and rewind machine test results show measurement errors of 0.3% and 1.9%, respectively. These error values are still acceptable, because the maximum limit of tolerance applied in PT. Tomoko Daya Perkasa is about 2.5%. In conclusion, the tool works well and can be used as expected.
Model Perencanaan Energi Hijau Menggunakan Metode Computable General Equilibrium Alvina Nur Mala; Rina Mardiati
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Energy is a vital element in our daily life. In line with the demands of energy needs, energy, which is influenced by population and economic growth, has increased continuously. The use of energy is still dominated by fossil energy which is become very limited and the output has not been carried out optimally. In order to realize national’s energy independence and energy sustainability, energy planning is very important for the basic of energy policies management. The objective of this research is to predict the sustainability of new and renewable energy consumption based on National’s Energy policy by the end of 2025 in West Java. This research used the Computational General Equilibrium (CGE) method as an approach to describe the energy balance between supply and demand. The simulation was done using a Green Energy (GREN) scenario by adding several key planning with the projection year in 2016-2025. The results show that the increasing of new and renewable consumption’s percentage in 2025 was 12%. It could be concluded that in 2025, the prediction of the sustainability of new and renewable energy consumption in West Java has reach 23%.
Perancangan Sistem Photovoltaic untuk Mesin Pembuat Es di Pelabuhan Perikanan Sadeng Arif Rahman Hakim; Widiarto Sarwono; Luthfi Assadad
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Currently, requirement of ice as medium fish cooling in PP Sadeng has not been fulfilled. This causes deterioration of fish quality when received by the consumers. The self production of ice blocks using ice maker machine has not solved this problem due to the highly operating costs, especially fuel. Photovoltaic (PV) systems are expected to overcome this problem. PV systems have high potential, since it is clean, environment-friendly, secure, and renewable. This paper explains the stages of PV system design, including PV module size, battery, solar charge controller, inverter, and also economic feasibility analysis. The results show that energy requirement of ice maker machines is 19,383.60 watts. The PV system consists of 40 units of 260 wp PV module, 82 units of battery 12V 100AH, 11 units of solar charge controller 40 A type MPPT, and 20 units of inverter DC-AC pure sine wave 1,200 W. Economic analysis shows that the life cycle cost (LCC) PV system designed is Rp513,704,165 for 25 years and levelized cost of energy (LCOE) of PV system is Rp1,401 per kWh.
Aplikasi Magnetic Energy Recovery Switch sebagai Dynamic Voltage Restorer pada motor Induksi Dwi Dharma Artakusuma; Fransisco Danang Wijaya; Eka Firmansyah
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Renewable energy source likes solar panel and wind turbine have intermittent character from instability power source generated. The instability power source can make dip voltage in power grid which happen in half cycle until few seconds. To stabilize the voltage in power grid from dip voltage, some methods have been developed using power electronics technology like VSI inverter, STATCOM, energy storage, OLTC, and MERS. The power electronic circuits have some advantages, such as small dimensional size and lightweight to keep voltage in power grid. In this paper, the MERS circuit was applied in induction motor which has small full bridge circuit, uncomplexity computation, and low switching frequency, so it needs low end hardware requirement. This paper proposed the use of MERS dc capacitor with 50% value from induction motor resistance. The result shows that MERS has advantage and can keep the voltage in power grid when the voltage below 39% and 15% above rated voltage (220 Vrms) with the recovery time around 0.3 second and keep the dip voltage over 1 second.

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