Jurnal Nasional Teknik Elektro dan Teknologi Informasi
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
Articles
644 Documents
<![CDATA[Desain Awal Analog Front-End Optical Transceiver untuk Aplikasi Visible Light Communication ]]>
<![CDATA[Trio Adiono]]>;
<![CDATA[Syifaul Fuada]]>;
<![CDATA[Angga Pratama Putra]]>;
<![CDATA[Yulian Aska]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 4: November 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[Analog Front-End (AFE) is a part of physical layer (PHY) at Visible Light Communications (VLC) system which has important things to transmit and receive the data. This research is a preliminary study in designing AFE transceiver which consists of LED driver and Trans-impedance Amplifier (TIA). The results are used as advanced reference design of AFE system and also to determine the modulations range (analog as well as digital). The design verification is based on data transmission which generated by signal generator. Square wave signal is used as digital modulation representative, and sinusoid signal as analog modulation representatitive. The range of VLC channels is about 50 cm with 0o angle. The result shows that digital modulation bandwidth is about 1 KHz to 10 KHz frequency, and analog modulation bandwidth is from 200 KHz to 600 KHz. We also find a significant impact by adding 1 pF capacitor to reduce noise gain. Furthermore, color filter testing is performed to investigate the design performance.]]>
<![CDATA[Desain Sistem Monitoring Sistem Photovoltaic Berbasis Internet of Things (IoT) ]]>
<![CDATA[Winasis]]>;
<![CDATA[Azis Wisnu Widhi Nugraha]]>;
<![CDATA[Imron Rosyadi]]>;
<![CDATA[Fajar Surya Tri Nugroho]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 4: November 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[Photovoltaic (PV) system is an alternative solution to provide electricity at rural area. A common implementation problem at rural area is the PV power plant cannot be monitored continuously. This research proposes wireless node for PV power plant monitoring based on Internet of Things (IoT). Wireless node is aimed for monitoring electrical parameter from the PV and environmental parameter (temperature and solar radiation). Measured parameters are sent to the cloud database to be accessible via the internet. The device consist of a sensor module, signal processing module and wireless transceiver module. Wireless transceiver module is an ESP8266 for connection to the IoT gateway and to the internet. Unidirectional ACS758 is used for current sensing, which give a reading error of 0.091 Ampere. For voltage sensing, a voltage divider is used. It has a reading error of 0.063 Volt. DHT22 is used for temperature sensing. Its reading error is 0.0097 °C. The radiation sensor has a reading error of 0.3 W/m2. Proposed design has been tested at Laboratorium of Energy Convertion, Electrical Engineering Department, UNSOED, on 300Wp PV system. This device provides reliable monitoring data transmission with average and deviation in delivery time consecutively 57 seconds and 2 seconds.]]>
<![CDATA[Neural Network pada Koordinasi PSS dan TCSC untuk Meningkatkan Kestabilan Sistem Tenaga Terinterkoneksi ]]>
<![CDATA[Rudy Gianto]]>;
<![CDATA[Kho Hie Khwee]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 4: November 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[This paper develops a design procedure for adaptive coordination among power system damping controllers (i.e. power system stabilizers and supplementary damping controller of thyristor-controlled series capacitor) for improving the stability of an interconnected electric power system. The design is based on the use of neural network which identifies the optimal controller parameters online. The inputs to the neural network include the active- and reactive- power of the synchronous generators which represent the power loading on the system, and elements of the reduced nodal impedance matrix for representing the power system configuration. The neural network-based adaptive controller is trained offline with a wide range of credible power system operating conditions and configurations. The controller parameters obtained from the trained neural network are verified by both eigenvalue calculations and time-domain simulations, which confirms that good dampings of the eletromechanical modes and stability are achieved.]]>
<![CDATA[Unit Commitment dengan Kekangan Keandalan Menggunakan Algoritme Genetika Mempertimbangkan Ketidakpastian Beban ]]>
<![CDATA[Sarjiya]]>;
<![CDATA[Sasongko Pramono Hadi]]>;
<![CDATA[Daniar Rizki Wijayanti]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 4: November 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[Unit commitment problem is associated with satisfying load demand and minimizing the total operating cost of the generating unit without violation of unit and system constraints. The solution of unit commitment should be reliable which has adequate spinning reserve in order to anticipate the uncertainty issue. This research proposes a method to handle two uncertainty issues, i.e. unit unavailability and load forecast uncertainty. The unit commitment problem is solved by genetic algorithm with priority list approach. The evaluation of spinning reserve capacity is based on probabilistic criterion by incorporating two reliability indices, i.e. loss of load probability (LOLP) and expected unserved energy (EUE). The effectiveness of the proposed method is tested using IEEE Reliability Test System-1996. The simulation results show that the proposed method is capable for solving unit commitment problem at total operational cost of $ 722186.93 and risk index at 0.347% (while EUE 0.01%, LOLP 1% and standard deviation (SD) 5%). The simulation results also demonstrate that several solution of the method have slightly lower cost up to 0.43% than those obtained in benchmark which the solution based on Simulated Annealing method.]]>
<![CDATA[Sistem Presensi Dosen Menggunakan IMEI dan GPS Smartphone dengan Data Terenkripsi ]]>
<![CDATA[Adriana Fanggidae]]>;
<![CDATA[Yulianto Triwahyuadi Polly]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 3: Agustus 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[The improvement of education quality is determined not only by student's attendance but also lecturer's attendance in class. In this paper, control system of lecturer's attendance has been developed. This system requires two types of users, which are administrator and lecturer. The administrator is responsible for data analysis and report. The lecturer confirms his/her attendance using smartphone by utilising IMEI (International Mobile Equipment Identity) and GPS (Global Positioning System). The security of the data flow in this attendance system is built using the stream cipher algorithm with three key randomization methods: odd parity Hamming code, tent map and session keys. Research finds that this contol system of lecturer's attendance is secure because of the following reasons. First, it has been built using three-tier architecture. Second, there is a security check from software system. And lastly data flow is encrypted with low correlation between plaintext and ciphertext. Furthermore, the sytem is reliable because when internet and/or GPS is lost, data between client and server is kept and is delivered once there is internet and/or GPS connection. Report of lecturer's attendance from this system is reliable and hence it is recommended to be used for lecturers' attendance report.]]>
<![CDATA[Perancangan Sistem Mobile Bulletin untuk Implementasi Smart Poster NFC dengan Tokenisasi Salt ]]>
<![CDATA[Audy]]>;
<![CDATA[Marcel Bonar Kristanda]]>;
<![CDATA[Seng Hansun]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 3: Agustus 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[Bulletin board is a medium for sharing information in Multimedia Nusantara University. However, feasibility study showed that bulletin board is not effective to be used as a medium for information dissemination in UMN. Apart from the user side, the development of UMN campus building also become an obstacle in using traditional bulletin board. NFC technology is a type of short-range wireless technology, which widely been used in developed countries in everyday life. One concrete manifestation of NFC technology implementation is Smart Poster. Therefore, based on feasibility study that had been done, the design of Mobile Bulletin system for implementing Smart Poster with NFC technology and Salt Tokenization method is made. This paper has succeeded to make the design of the overall system architecture and user interaction overview. The proposed architecture design shows that this system can solve conventional bulletin board problem, both for students and administrators.]]>
<![CDATA[Pengelompokan Data Menggunakan Pattern Reduction Enhanced Ant Colony Optimization dan Kernel Clustering ]]>
<![CDATA[Dwi Taufik Hidayat]]>;
<![CDATA[Chastine Fatichah]]>;
<![CDATA[R.V. Hari Ginardi]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 3: Agustus 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[One method of optimization that can be used for clustering is Ant Colony Optimization (ACO). This method is good in data clustering, but has disadvantage in terms of time and quality or solution convergence. In this study, ACO-based Pattern Reduction Enhanced Ant Colony Optimization (PREACO) method with a gaussian kernel function is proposed. First, it sets up initial solution. Second, the magnitude of pheromone is calculated to find the centroid randomly. With the initialized solution, the weight of the solution is calculated and the center of cluster is revised. The solution will be evaluated through a gaussian kernel functions. Function 'pattern enhanced reduction' is useful to ensure maximum value of pheromone update. Those steps will be conducted repeatedly until the best solution is chosen. Tests are performed on multiple datasets, with three test scenarios. The first test is carried out to get the right combination of parameters. Second, the error rate measurement and similarity data using Sum of Squared Errors is done. Third, level of accuracy of the methods ACO, ACO with the kernel, PREACO, and PREACO with the kernel is compared. The test results show that the proposed method has a higher accuracy rate of 99.8% for synthetic data, 93.8% for wine data than other methods. But it has a lower accuracy by 88.7% compared to the ACO.]]>
<![CDATA[Enkripsi Aturan Dinamis pada Aplikasi Pembayaran Gerak ]]>
<![CDATA[Emir Husni]]>;
<![CDATA[Danang Triantoro Murdiansyah]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 3: Agustus 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[The trend of financial transactions using mobile phone or mobile payment is increasing. Using the mobile payment service, user can save money on the mobile phone and separate the money from prepaid bills. In order to protect the user, provider must equip the mobile payment service with transaction security, such as secure mobile payment application. This paper offers a safety feature which is used for mobile payment application based on Android operating system. A new method, Dynamic Rule Encryption (DRE), is created. In DRE, the encryption is ruled dynamically. By encrypting data with dynamic rules, DRE can protect the data. DRE also has a function as a token for authentication. DRE Token is generated using dynamic time-based rules. The time reference used in DRE is based on the order of the day in the year (day of the year). Performance measurement in this research is based on the Hamming distance. The test results show that the system performs quite good. The average distance among outputs is about 258 bits of 512 bits input. The results also show that the DRE program’s execution time is quite fast, i.e. not more than 24 ms.]]>
<![CDATA[Modifikasi Metode Timestamped Change Data Capture pada RDBMS (Relational Database Management System) ]]>
<![CDATA[Hendra Suprayogi]]>;
<![CDATA[Harry Soekotjo Dachlan]]>;
<![CDATA[Muhammad Aswin]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 3: Agustus 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[A normalization process must be applied in the data structure in database designing process in RDBMS, in order to eliminate data anomaly and redundancy. This procedure increases access performance as well as reduces unnecessary storage space. It transforms a single entity into multiple entities, normalization process is often so-called decomposition. A problem occurs, however, after a normalized database is being implemented. When a new data recorded there is nothing wrong with its retrieval, while the retrieval process goes into the last data updated in the case of updating activity. Moreover, when a deletion occurred, the data can never be retrieved. Timestamped CDC method offers a way of tracking data change. Basically, timestamped CDC uses historical record to include timestamp everytime change occurs. Tracking updated record is simply done by the previous research of timestamped CDC, while keeping track on deleted data is impossible since the data vanished within the deletion process. This paper modifies the timestamped CDC method so that data deletion tracking can be achieved as well as data updating. Furthermore, this research also makes several testing procedures to find out performance of the modified timestamped CDC structures.]]>
<![CDATA[Pengembangan Engine Integrasi Tabel HTML pada Halaman Web ]]>
<![CDATA[Memen Akbar]]>;
<![CDATA[Fazat Nur Azizah]]>;
<![CDATA[G. A. Putri Saptawati]]>
<![CDATA[ Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 3: Agustus 2016 ]]>
Publisher : <![CDATA[Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada ]]>
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<![CDATA[Two problems are arisen while integrating number of tables from number of web pages, i.e. structural conflict and semantic conflict. To tackle those problems, the proposed study combines some existing methods that are already proven to solve problems in integrating process. The proposed integration process of HTML table consists of 4 phases: (1) locating the table in web pages, (2) separating attributes and data values, (3) integrating the table scheme, (4) migrating the data values into integrated scheme. Table location in web page is determined using heuristic approach. This approach also can separate the attributes and the data values of the table. Semantic conflict that is apparent while integrating the table scheme is handled using domain specific ontology. The resulted data value, then, is migrated to table scheme in line with duplication data checking using vector space model. Result of the integration is presented as single HTML table. This approach is implemented as an engine that is coded using Phyton language. Result of experiment shows that the proposed approach can be used to integrate number of HTML table from number of web pages into a single integrated table.]]>
