Elektron Jurnal Ilmiah (EJI - Department of Electrical Engineering, Politeknik Negeri Padang)
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APLIKASI PENGISIAN BAK AIR DAN KRAN OTOMATIS DENGAN MIKROKONTROLER
Get PDFAt the last project had made System to fill t the Automaticc reservoir. This equipment used electrode sensor level such as cuprum which use to detection the high water. Out put t his sensor will be proses by controller and controller give relay instruction to solenoid valve. If the water lack of the level, Controller will be active the valve antil the reservoir full, if the writer want the perfect equipment, the writer add the controller open close automatic valve. That worck is based on the distance of people to valve. If the distance of people near to valve, so the valve will open it self. As open loop controll system, valve use microcontroller AVR Atmega 8535 to Active the relay
TEKNIK ESTIMASI DAN KOMPENSASI GERAK PADA VIDEO CODING FGS (Fine Granularity Scalability)
Get PDFMotion estimation is a process to determine the movement of an object on video sequential. The movement of objects is known as motion vector. A motion vector indicates a shift point between the current frame with the reference frame. Of motion vector is obtained, it would seem that the movement of the dots between the observed frame. In this study using the algorithm block maching SAD (Sum of Absolute Different), the search process is done per pixel. To determine the quality of the movement of objects in each frame interpolation is obtained by calculating the PSNR value. PSNR values range from 35 to 40 dB. From the research conducted using the 90 frame interpolation obtained PSNR value decreases.
 
PEMETAAN JARINGAN DISTRIBUSI (SUTM) 20 kV DAN PERKIRAAN KEBUTUHAN LISTRIK DI KECAMATAN PAYUNG SEKAKI, KABUPATEN SOLOK
Get PDFPayung Sekaki district is one of the area in Solok Region that needs the development of electricity network. To support its development plan, the real condition of Payung Sekaki district should be known. The mapping method is one of the way to know the already implemented electricity area.Based on the mapping result, it is known that the electricity network of SUTM 20 kV at Payung Sekaki district has been implemented in Sikrukam area and Supayang area and not yet in Aie Luo area. The estimation method of electricity needs at Payung Sekaki district is motivated to get information on its development based on economic and population growth. Data processing results using SPSS show that the eletricity needs at Payung Sekaki district from 2013 to 2014 will dramatically increase followed by the increasing of economic growth in spite of population growth is still remain the same
ANALISA KERJA MANIFOLD ABSOLUTE PRESSURE (MAP) DAN KADAR KANDUNGAN EMISI GAS BUANG YANG DIHASILKAN PADA MOTOR BENSIN DENGAN SISTEM INJEKSI ELEKTRONIK TYPE D-EFI
Get PDFThis research is aim to : (1) Describe how Manifold Absolute Pressure (MAP) works at low, middle and high level rotation machine; (2) Knowing Levels of Exhaust Emission Content at low, middle and high level rotation machine. Experiment method was used for this research. EFI engine which is using MAP has been analyzed. Scan tool used to observe MAP performance and Four Gas Analyzer to detect and measure Exhaust Emission Content. From experiment found that increasing the spin machine will result in a decrease vacuum of the intake manifold. At low level rotation (750 rpm) the average of air vacuum through the MAP is 29.00 Kpa, the middle level (2000 rpm) is 26.67 Kpa, and at high speed level (5000 rpm) is 27 , 33 Kpa
IMPLEMENTASI METODA PRE-PROCESSING UNTUK MENINGKATKAN LAJU AKURASI HASIL KOMPUTASI OPERASI PENJUMLAHAN SEKUENSIAL MULTI OPERAND SISTEM WAKTU NYATA
Get PDFReal-time system works in a limited period of time in accordance with the deadline time given. The success of a real time system performance is determined by several time components such as release time, processing time and time deadlines. Problems arise when the processing time is not enough due to the delay factor deadline or other factors, while the deadline time has come and the process had to be stopped. When the process is stopped, the results obtained have not been enough to be used as the end result of data systems fail to meet the given time constraint. There are several ways to overcome this, one is to perform preprocessing before the end of the process is done. In the sequential preprocessing system multioperand summation of the operand-operand which can be summed sort operand-operand which has significant influence on the results done first. When the process had to be stopped due to a deadline is coming then the accuracy of the results produced may be used as the final result. This study utilized the method as a preprocessing ascend in sorting systems to sort operand-operand values to be summed from largest to smallest. The results show the accuracy of the rate of change of the summation process in accordance with the needs of real-time system when the process had to be stopped before the end
KAJIAN DESKRIPTIF PEMANFAATAN INTERNET OLEH MAHASISWA DI JURUSAN TEKNIK OTOMOTIF FAKULTAS TEKNIK UNIVERSITAS NEGERI PADANG PADA TAHUN 2012
Get PDFThis research is aim to describe how student use the internet in campus Automotive Engineering Department Padang State University at 2012. Descriptive Research Method was used for this research. Questionnaire was made to obtain the data. Its Questions are about the knowledge of internet facilities and use of the Internet by college students on campus. Questionnaire distributed to 138 respondents. From questionnaire data founded that 84% respondents using campus wifi hotspot for more than two days a week. About 99% of them use the internet to seek learning material to improve academic and technical knowledge. But, unfortunately Academic Information System are still not fully utilized. For example, only 9 of the respondents who have used discussion / chat online as one of a services of Academic Information Syste
PENGARUH PENYEIMBANGAN BEBAN TRAFO DISTRIBUSI TERHADAP ARUS NETRAL
Get PDFLoad balancing is load balancing activities in each phase distribution transformers are not balanced, the goal to reduce the magnitude of the neutral current transformer because inequality between phases. This activity was done by measuring each phase transformer load, calculate the average current in each phase, and shifted the burden of heavily loaded phase to phase which has a lot fewer burdens. Load balancing is done on a regular basis every 6 months. PT. PLN (Persero) Rayon Bukittinggi perform load balancing on the distribution transformer substation 100 KVA Distribution Tabek Gadang Tower 2 times on Wednesday, 15th May 2013 at 19:30 pm and Thursday, 16 May 2013 at 19:30 pm. First, by moving the load phase T to phase S at 18 A. Second, by moving the burden from phase to phase R T at 9 A. and load phase T to S phase by 11 A. load balancing distribution transformers 100 KVA Substation Tabek Gadang Tower is near parity with the transformer neutral currents in 14.18 A
UNJUK KERJA DAN PEMANFAATAN INVERTER SEBAGAI PENGENDALI KECEPATAN MOTOR INDUKSI 3 PHASA
Get PDFThe Induction motors are found in industrial and domestic environments because of low cost of operation including, induction motors are widely used induction motor 1 phase and 3 phase. During operation of induction motors generally used at normal speed, but the specific purpose induction motors operated with variable speed. In order to obtain varying motor speed can be controlled using the inverter. The use of inverters here to give supplay voltage AC induction motor in which the magnitude of the frequency can be varied. Setting frequency of the inverter utilizing method pulse with modulation (PWM). The circuit used to build PWM, using Insulated Gate Bipolar Transistor (IGBT) technology. Values obtained variable frequency ranging from 4 Hz to 50 Hz, and acquired motor speed ranging from 12 rpm up to 1390 rpm
PENGUATAN SINYAL GLOBAL SYSTEM FOR MOBILE COMMUNICATION (GSM) MENGGUNAKAN ANTENA YAGI 14 ELEMEN
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The hand phone provides an easy to communicate in domestic calls or international calls. The radiation pattern of yagi antenna leads to one direction. Therefore, this antenna is selected for signal amplifier in global system of mobile communication. The design of 14 element yagi antenna which applied for signal amplification in the cell phones was conducted in this study. The design was done manually without computer software. The antenna was created using an aluminum pipe in 3/8 inch diameter for element and an aluminum beam for boom. The result showed that the operating frequency between the designed antenna and manufactured antenna are the same i.e. 947 MHz. The bandwidth of yagi antenna is 9 MHz. Moreover, the antenna gain which measured in folded antenna transmitter and BTS transmitter are 16 dB and 12 dB respectively. That result is caused differences in distance at the measurement time. Utilization of yagi antenna has succeeded to increase signal amplification in hand phon
SISTEM INFORMASI UMPAN BALIK PROSES BELAJAR MENGAJAR TERHADAP STAF PENGAJAR BERBASIS WEB PADA JURUSAN TEKNOLOGI INFORMASI POLITEKNIK NEGERI PADANG
Get PDFFeedback Information System Teaching and Learning Against Web-Based Teaching Staff In the Department of Information Technology Padang State Polytechnic is an information system that receives feedback from the learning process of students to teaching staff in the form of questionnaires, to then process and provide the necessary information. This system can be accessed by many users at the same time. Users of this system consists of students, operators, administrator, and faculty leaders. The system is built using PHP programming language and MySQL database server. This system could make it easier, save time and reduce errors in entering, process and provide information on the results of data processing questionnaires. While limitations are only limited to faculty assessment only and limited to the processing of assessment ratio