Elektron Jurnal Ilmiah
Elektron Jurnal Ilmiah (EJI) is a peer-reviewed journal which is published by Department of Electrical Engineering, Politeknik Negeri Padang. The ISSN number is 2085-6989. EJI published the first edition in 2009 and since 2014, EJI publishes in Juni and December. The scopes of the journal are: electrical power, telecommunication, control, electronic and robotics.
Articles
165 Documents
<![CDATA[Sistem Kendali Distribusi Gas Buang pada Waste Heat Recovery Power Generation untuk dikonversi menjadi Energi Terbarukan di Indarung V, PT. Semen Padang, Indonesia ]]>
<![CDATA[Nasrul Harun]]>;
<![CDATA[Valdi Rizki Yandri]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 1 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.1.152
<![CDATA[The coal combustion processes which require high temperature will produce waste heat energy. The energy can be used as generator propulsion to produce electrical energy. Thus, Semen Padang Corporation has successfully got funding from the Japan government, New Energy Technology Development Organization (NEDO) to build the installation Waste Heat Recovery Power Generation (WHRPG) located in the production area of Semen Padang Corporation, Indarung V. Furthermore, heat energy process can not be operated manually, so control system is needed to control this WHPRG performance. The operational of WHPRG can produce electricity power 196.15 MW as to reduce the electric power that must be supplied by Indonesian Electricity Corporation. Besides that, the outcome of Semen Padang Corporation can be saved 33 billion Rupiah per year and CO2 emission can be declined 33,000 tons per year.]]>
<![CDATA[Sistem Pengendalian dan Monitoring Distribusi Air Berbasis Nodemcu 8266 ]]>
<![CDATA[Laxmy Devy]]>;
<![CDATA[Yul Antonisfia]]>;
<![CDATA[Monica Febrina]]>;
<![CDATA[Suryadi suryadi]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 1 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.1.153
<![CDATA[Clean water management is managed by a Perusahaan Daerah Air Minum (PDAM), which is centered on each local government. The distribution of water to consumers cannot be done evenly because of the water distribution system and manual monitoring. Overcoming these problems, the Water Distribution Equity System to Consumers can be used to monitor and control water distribution. This system regulates the debit and time zone for water distribution to consumers. Water discharge is detected by the water flow sensor, and the valve is connected to the servo and time zone using RTC DS1307. The water pump is controlled to maintain the volume of water in the reservoir. The water level in the reservoir is detected using the HC-SR04 ultrasonic sensor. Water distribution is monitored on PCs (Personal Computers) and smartphones using Delphi programming and Thingspeak. The reading of water discharge is generated during peak use times for each faucet is 1.9: 1.8: 1.8 while at the time of normal use the ratio of the initial distribution to each faucet is 2.5: 2.3, 1: 1, and 2.5: 2.3.]]>
<![CDATA[Kajian Pemanfaatan IoT Berbasis LPWAN Untuk Jaringan Akuisisi Data ARG ]]>
<![CDATA[Tri Istiana]]>;
<![CDATA[R Yudha Mardyansyah]]>;
<![CDATA[G.S Budhi Dharmawan]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 1 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.1.155
<![CDATA[One of parameters for observing weather elements is the amount of rainfall. The rainfall observation system is using ARG. The existing condition uses cellular network-based IoT. In this study, researchers tried to provide an alternative communication system for ARG data acquisition networks using LPWAN-based IoT technology. Comparison of three LPWAN IoT technologies that can be applied to ARG communication systems, namely NB-IoT, Sigfox, and LoRaWAN. The three LPWAN technologies have followed the Republic of Indonesia Minister of Communication and Information Regulation No. 1 of 2019. These three technologies can be used for ARG data acquisition networks. LoRaWAN technology in rural areas reaches 20 km. LoRaWAN devices that meet frequency requirements have been sold freely on the internet with the 920 MHz frequency band. Of these three technologies, only LoRaWAN can be used to build private or internal communication networks. This is an added value for BMKG to build district or provincial scale LPWA WAN networks in regions that are constrained by the transmission of ARG data through cellular networks.]]>
<![CDATA[Alat Pengatur Takaran Pakan Ikan Otomatis menggunakan metoda fuzzy dengan sensor suhu dan pH ]]>
<![CDATA[Anton Hidayat]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 1 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.1.144
<![CDATA[Busy activities such as work, out of town, holidays with family make it difficult to feed fish done well because farmers can not always be near the pond. In addition to the erratic weather that can reduce the quality of pond water so that the dose of feed must be adjusted again from the normal dose. Fish feed can be done automatically by making feeder equipment scheduled and measured using RTC, keypad and LCD as an interface with the user. And measured using a screw rotation and encoder in order to know the number of thread rotation is done. After testing, it was found that this tool can provide fish feed on schedule with an average dose of 302.6 g per 100 thread turns with a lot of feed errors coming out by 1.03% in an interval of 5.77 seconds.]]>
<![CDATA[Pengembangan Sistem Diseminasi Prakiraan Cuaca Menggunakan Aplikasi Bot Telegram dengan Metode Webhook ]]>
<![CDATA[TrI Istiana]]>;
<![CDATA[Raksaka Indra A]]>;
<![CDATA[G.S. Budhi Dharmawan]]>;
<![CDATA[Bowo Prakoso]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 1 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.1.159
<![CDATA[An official weather forecast dissemination application named @infoBMKG developed for Android and iOS by BMKG available since 2016. Following users behaviour on instant messaging service application, system development is necessary needed for accommodating request-based dissemination. The Telegram Bot feature with Webhook method is applied because of the efficiency on coding for initial setup in the development of Telegram Bot. Therefore, it allows fast response in sending reply to any request. There are three main menus in the design of the telegram Bot (@BMKGbot) displayed as Weather Forecast, Airport Weather, and Satellite Imagery. As results of performance testing, the average response time dissemination-request 2.54s for Weather Forecast, 2.76s for Airport Weather and 7.28s for Satellite Imagery. Bigger size of data disseminated in an image format of satellite imagery cause longer response time, however the performance testing obtain response times within satisfactory period and meet as expected. It is recommended to implement @BMKGbot at reliable hosting service on its operational environment for chasing users’ satisfaction with high availability services in term of weather forecast dissemination.]]>
<![CDATA[Implementasi Teknologi Internet of Things Pada Sistem Pemantauan Kebocoran Gas LPG dan Kebakaran Menggunakan Database Pada Google Firebase ]]>
<![CDATA[Abi Sabila Mustaqim]]>;
<![CDATA[Danny Kurnianto]]>;
<![CDATA[Fikra Titan Syifa]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 1 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.1.161
<![CDATA[Fire due to Liquefied Petroleum Gas (LPG) gas leak is one of the disasters that still often occurs in the community. Community ignorance of safety standards in using LPG gas is one reason. Fires can be prevented if at the time of the LPG gas leak can be detected earlier. Therefore we need a system that can monitor the condition of gas leaks and fires remotely. Internet of things (IoT) technology can be applied to this monitoring system so that information on LPG gas leaks and fires can be monitored remotely. The Internet of Things (IoT) based LPG and Fire leak monitoring system is a concept that utilizes internet connectivity between smartphone devices connected to sensor devices. The devices used to support this system include NodeMCU ESP8266 as a microcontroller and as a liaison to the internet, MQ-6 gas sensors and flame sensors as sensors for detecting gas and fire leaks, buzzers as alarms, and fans as neutralizing gas levels in the room. Data obtained by the sensor will be uploaded to the database via the internet and can be accessed through an android application. The results of the design show that the android application can display notifications when a gas leak or fire occurs. In testing the performance of data transmission, the results show that the highest data transmission delay is 64,61 seconds, and the lowest delay time is 61,56 seconds, the highest throughput value is 747,6 bits/second, and the lowest value is 285,4 bits/second.]]>
<![CDATA[Analisis Paralelisasi Konverter Melalui Multi Input - Single Output Transformator Frekuensi Tinggi dengan MatLab Simulink ]]>
<![CDATA[Fitriadi Fitriadi]]>;
<![CDATA[Valdi Rizki Yandri]]>;
<![CDATA[Herisanjani Herisanjani]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 2 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.2.162
<![CDATA[Two parallel converters DC/AC with isolated control can be applied by a high frequency transformer with a switching pattern. However, the switching pattern and control technique of the converter needs more research so the process of electrical energy distribution on the parallel output side can produce the optimum value. Furthermore, in this research, parallelization method is applied by utilizing two converters in high frequency transformer with multi input-single output capability controlled by Matlab/Simulink. The input side of transformer consists of two full bridge converters while secondary side represents the parallelization of output side. Two converters DC/AC is simulated by phase shifted full bridge (PSFB) of switching pattern and voltage mode control (VMC) technique. The distribution condition of optimum energy is investigated by observation of influences of ON condition duration of each switching period cycle on input converter to ON condition duration of secondary transformer terminal. The ON condition duration of each converter with switching PSFB is the condition depends on shifted/delay phase of signal on gate control. According to this simulation, optimum ON condition occurs when shifted/delay phase of each gate control signal converter is 135° (α1=α2=135°) and this condition is more efficient than phase of gate control signal is 45° (α1=α2=45°). The simulation results show that larger α of converters give the optimum distribution.]]>
<![CDATA[Sistem Otomatis Pompa Air dan Sabun pada Wastafel Pencuci Tangan ]]>
<![CDATA[Andrizal Andrizal]]>;
<![CDATA[Yultrisna Yultrisna]]>;
<![CDATA[Junaldi Junaldi]]>;
<![CDATA[Tuti Anggraini]]>;
<![CDATA[Anton Anton]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 2 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.2.168
<![CDATA[Washing hands is an activity that should be routinely carried out by every individual, especially during the COVID-19 pandemic like today. There are many factors that make someone feel lazy and don't want to wash their hands, one of which is not wanting to be bothered by hand washing activities such as taking soap, turning the faucet and others. Experiments have been carried out in the form of testing the response of the sensor to detect the user's hand based on the distance and the reading angle. Furthermore, the ability to set the delay time for rubbing hands is tested to activate the water tap pump for rinsing. Based on the results of trials and analyzes carried out, the sensor response is obtained at a minimum distance of 4 cm and a maximum distance of 140 cm with a view or response area of 1100 horizontal positions and 850 in the vertical position. The water pump and soap pump are active for 3 seconds when the user's hand is detected by the sensor approaching the end of the water tap. The water tap pump comes back on after being delayed for 23 seconds, and the system is able to operate 100% automatically. Thus the minimum time for users to rub their hands for 20 seconds according to health standard protocols can be met.]]>
<![CDATA[Rancang Bangun Generator PWM Berbasis Mikrokontroler AVR ATmega ]]>
<![CDATA[Firdaus firdaus]]>;
<![CDATA[Rivanol Chadri]]>;
<![CDATA[Nasrullah Nasrullah]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 2 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.2.171
<![CDATA[PWM is widely used in the fields of automatic control, power electronics and cellular communications. Previous research designed a PWM generator using the OMAP-L138 chip to produce a simple, high-precision, flexible and portable circuit. Another generator uses a single board computer FEZ Panda III and an Arduino board for power inverters. While the FPGA Spartan 3 is also used to generate PWM signals that can vary the duty cycle. In this paper, the PWM signal generator is made using the AVR ATmega8535 microcontroller where the frequency parameters and the output signal duty cycle can be adjusted via the keypad. The signal is tested using a measuring instrument for its accuracy. The ATmega AVR microcontroller family has a timer / counter with one of its operating modes, namely fast PWM. In order to change the frequency and duty cycle as desired, the ICR register is used to store the TOP value and the OCR register for the MAX value. The OCR value determine the duty cycle and the ICR value specify the frequency. The results are the higher the PWM frequency, the greater the value of the measured and desired frequency difference, this is because the large frequency makes ICR register value becomes small even though the frequency divider at minimum value. The difference between measurements and calculations on the Duty Cycle gives the result under 1%. This difference also occurs due to the rounding of the ICR and OCR values, but at a frequency of 20 kHz and a 25% Duty Cycle where the ICR value is 599 and OCR is 116 resulting in the minimum difference in frequency and Duty Cycle. From the experiments that have been carried out, the design of the PWM generator based on the AVR ATmega microcontroller has been successfully realized]]>
<![CDATA[Aplikasi Monitoring Air Pada Water Torn Secara Otomatis Berbasis Android dan Di Dukung Oleh Mikrokontroller ]]>
<![CDATA[Dwiny Meidelfi]]>;
<![CDATA[Andre Febrian Kasmar]]>;
<![CDATA[Fanni Sukma]]>;
<![CDATA[Anggie Meyfrian Pratama]]>
<![CDATA[ Elektron : Jurnal Ilmiah Volume 12 Nomor 2 Tahun 2020 ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.12.2.174
<![CDATA[Control and monitoring of water in a tank is a computer instrumentation needed in industry. This research discusses a water monitoring application in water torn automatically based on android and supported by a microcontroller. One of the developing technology fields is microcontroller technology. In designing this device, it uses a NodeMCU microcontroller as a data processor and an ultrasonic sensor as data input as well as a buzzer and servo. An ultrasonic sensor is a device that can measure the distance of an object by utilizing reflected ultrasonic waves. This water monitoring uses firebase as a database to store data. To display measurement data, the interface is also designed using the Android Studio application software in the form of graphs, pump status, and water notifications. The test results show that the ultrasonic sensor used is able to measure water levels from 2 cm to 20 cm with an average measurement error of 4.93%. Water monitoring is designed to be able to produce a system output response according to the reference value given. In addition, water level monitoring can be displayed on the Android software interactively]]>
