Buletin Ilmiah Sarjana Teknik Elektro
Buletin Ilmiah Sarjana Teknik Elektro (BISTE) adalah jurnal terbuka dan merupakan jurnal nasional yang dikelola oleh Program Studi Teknik Elektro, Fakultas Teknologi Industri, Universitas Ahmad Dahlan. BISTE merupakan Jurnal yang diperuntukkan untuk mahasiswa sarjana Teknik Elektro. Ruang lingkup yang diterima adalah bidang teknik elektro dengan konsentrasi Otomasi Industri meliputi Internet of Things (IoT), PLC, Scada, DCS, Sistem Kendali, Robotika, Kecerdasan Buatan, Pengolahan Sinyal, Pengolahan Citra, Mikrokontroller, Sistem Embedded, Sistem Tenaga Listrik, dan Power Elektronik. Jurnal ini bertujuan untuk menerbitkan penelitian mahasiswa dan berkontribusi dalam pengembangan ilmu pengetahuan dan teknologi.
Articles
295 Documents
<![CDATA[Choosing an Instant Messaging App: Security or Convenience? Comparison between Whatsapp and Telegram ]]>
<![CDATA[Azzhan Shahrul]]>;
<![CDATA[Aji Prasetya Wibawa]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 3 No. 2 (2021): Agustus ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v3i2.2784
<![CDATA[An increase in Instant Messenger (IM) application users makes it easier for people to get connected through social media. Application developers regularly offer updates. However, those updates don’t always satisfy users expectations, instead confuse them. Even users are sometimes hesitant to update the app thus they switch to another messaging platform. This research discusses the analysis and comparison of two IM applications that reached 100 million downloads on Play Store; Whatsapp and Telegram. The analysis process is carried out from the features use in the Instant Messenger application. The data collection procedure are conducted by viewing the traffic. The data acquisition technique is done by using literacy and observation study methods to get full access to smartphones. The results of the analysis are in the form of a comparing table between both IM applications and expected to be future reference for further reseach.Peningkatan pengguna aplikasi Instant Messenger (IM) memudahkan masyarakat untuk terhubung melalui media sosial. Pengembang aplikasi secara teratur menawarkan pembaruan. Namun, pembaruan tersebut tidak selalu memenuhi harapan pengguna, malah membingungkan mereka. Bahkan pengguna terkadang ragu untuk memperbarui aplikasi sehingga mereka beralih ke platform perpesanan lain. Penelitian ini membahas tentang analisis dan perbandingan dua aplikasi IM yang mencapai 100 juta unduhan di Play Store; Whatsapp dan Telegram. Proses analisis dilakukan dari fitur-fitur yang digunakan pada aplikasi Instant Messenger. Prosedur pengumpulan data dilakukan dengan melihat lalu lintas. Teknik akuisisi data dilakukan dengan menggunakan metode studi literasi dan observasi untuk mendapatkan akses penuh ke smartphone. Hasil analisis berupa tabel perbandingan antara kedua aplikasi IM dan diharapkan dapat menjadi acuan untuk penelitian selanjutnya.]]>
<![CDATA[Prototype Automatic Transfer Switch (ATS) on the Generator to Anticipate Blackouts ]]>
<![CDATA[Maslahatul Irfani M.]]>;
<![CDATA[Amalia Herlina]]>;
<![CDATA[Safrudin Safrudin]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 3 No. 1 (2021): April ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v3i1.2829
<![CDATA[It has been designed and built a device to transfer the load from the PLN to the generator called the Automatic Transfer Switch (ATS) and at the same time able to turn on the generator automatically called Automatic Main Falure (AMF). This tool is in the form of a prototype that has successfully fulfilled its function so that it can be applied for domestic or industrial purposes. This tool is also economically valuable, because the price of its production is able to compete with similar products in the market, but by having more capabilities in the form of fuel detection and lubrication. With the results of the study covering the duration of the network load outages during the process of switching the electricity grid from PLN to the generator on average 3.5 seconds, and 0 seconds (instantaneous) during the process of switching the electricity grid from the generator to PLN, the ATS-AMF that is created automatically is able to light Genset engine when PLN dies and turns off the Genset engine when PLN starts again after it goes out, and the ATS-AMF that is made automatically is able to give a warning (alert) to the engine operator when Gasoline or Oil will run out at the level of 20% of the capacity of Gasoline or Oil.]]>
<![CDATA[Nitrogen Test Tool in Rice Leaves Based on Android Application ]]>
<![CDATA[Muhammad Darso]]>;
<![CDATA[Anton Yudhana]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 3 No. 1 (2021): April ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v3i1.3071
<![CDATA[This study aims to make an application for measuring nitrogen requirements in rice leaves based on an android application. The method used is the On Touch Motion Event. The onTouch method will be used when a touch will be sent to be displayed, then MotionEvent contains information about the touch made. System testing is carried out to display images using the Open Camera button using a smartphone camera, after that look for the RGB value then convert it to the BWD scale. This research has succeeded in building an application that can determine nitrogen levels in rice leaves through leaf color and provide recommendations for the amount of fertilization according to the desired results. The results of tests that have been carried out on 6 samples of rice leaves with 60 samples of RGB value data produce an accuracy rate of using the application of 78.33% and the remaining 21.66% is an error value. And how to calculate the land area, the results obtained from the need for urea per plant in 1 ha are 120 kg, where the BWD table shows the value of leaf color on a scale of 2-3 and requires a urea measurement of 100 which is estimated to get a yield rate of 6 t / ha.]]>
<![CDATA[System of Measuring PH, Humidity, and Temperature Based on Internet of Things (IoT) ]]>
<![CDATA[Wahyuni Eka Sari]]>;
<![CDATA[Eko Junirianto]]>;
<![CDATA[Geofani Fatur Perdana]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 3 No. 1 (2021): April ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v3i1.3214
<![CDATA[The problem faced by farmers in Samarinda is the difficulties to know the condition of the chili plants when they are away from home or from the garden. Often times the farmer commutes from home to the garden just to monitor the condition of the plants, which reduces work effectiveness and takes a long time. Therefore, in this study a tool was made to measure soil moisture, temperature and soil pH based on the Internet of Things. The process of monitoring soil pH, soil moisture, and air temperature in chili plants using soil pH sensors, soil moisture sensors, and soil temperature sensors as well as Wemos / Arduino for data processing and sending analog data to the ANTARES platform. The result of this research is that soil condition data can be sent and read in real time through the ANTARES web application. Tool testing was carried out at 30 different locations in the city of Samarinda.]]>
<![CDATA[Design of Water Level Control in Tank Based on Fuzzy Logic ]]>
<![CDATA[Ilmi Rizki Imaduddin]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 2 No. 3 (2020): Desember ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v2i3.3307
<![CDATA[Liquid level control is a regulatory system that is widely used by the petrochemical industry, paper mills, and steam power plants (PLTU). Fuzzy control techniques have light computing capabilities and do not require knowledge of the parameters of the system. The purpose of this research is to design and design a device that can make it easier to adjust the liquid level in the storage tank and observe the fuzzy control performance. Control is done by adjusting the valve opening in the storage tank. From the results of this study, data on setpoint 56 is obtained, the valve is at an angle with all open status (BS), at the first second or 1 second, and at set point 41, the valve is at an angle with a half-closed status (SN), in the 13th second, and the valve will be closed all (NS), if the valve is at an angle at the set point 29, with a time of 1620 seconds or 27 minutes. Based on this research, the proposed system is able to control the water level in the tank using fuzzy control.]]>
<![CDATA[Monitoring Power Usage on Humanoid Robot Wirelessly Using the INA219 Sensor ]]>
<![CDATA[Ibnu Fauzi]]>;
<![CDATA[Nuryono Satya Widodo]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 3 No. 1 (2021): April ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v3i1.3334
<![CDATA[Currently, humanoid robot power measurements are only carried out when there is a robot's movement that is weakened or unable to move optimally. This is considered to be less than optimal in preventing damage/weakness of the robot's movement. The monitoring device is installed on each part of the humanoid robot, namely the hands and feet, then it will send the current and voltage results via the wireless system. The current sensor used is an INA219 type which is calibrated with a resistor. The power supply used is 12.6 V and the resistors for calibration are 15 Ohm, 18 Ohm, 22 Ohm, 39 Ohm, 47 Ohm, 56 Ohm with each resistor having a power resistance of 5W. The INA219 sensor can read the current, voltage, and power values of the resistor even though there are still differences when compared to multimeter measuring instruments. The results of sensor calibration with a resistor will be used as a comparison when monitoring the humanoid robot. NodeMCU ESP8266 as a microcontroller and wi-fi module. The web server can operate properly when there is a connection. Monitoring runs in real-time for 1 second to refresh data. In the results obtained in all tests, all INA219 sensors can work but are less accurate. For smooth wireless communication and in accordance with research objectives.]]>
<![CDATA[Web-Based Job Training Report Guidance System at SMKN 2 Kraksaan ]]>
<![CDATA[Matlubul Khairi]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 2 No. 3 (2020): Desember ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v2i3.3343
<![CDATA[Implementation of Field Work Practices (PKL) is an effort that can be made by SMK to continue to produce graduates who can compete in the business world and the industrial world (DU / DI). The government policy regarding learning at / from home during the Coronavirus Disease 2019 (COVID-19) pandemic has an impact on the reporting process at SMKN 2 Kraksaan. This study aims to build a report guidance system using server side-based web technology. This system was built using a waterfall model and PHP (PHP Hypertext Prepocessor) programming. System design tools used are Flowmap Diagrams, Data Flow Diagrams, and Entity Relationship Diagrams. The black box test results show that the output of the system is in line with expectations. User response to the system using a questionnaire resulted in a feasibility percentage of 83.6% with a very feasible category interpretation. It can be concluded from the test results that the Field Work Practices report guidance system is in accordance with user needs and is very suitable for use.]]>
<![CDATA[Simple Handwriting Calculator Application Using Optical Character Recognition (OCR) ]]>
<![CDATA[Supriadi Supriadi]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 2 No. 3 (2020): Desember ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v2i3.3348
<![CDATA[The calculator is a calculation tool that is widely used in various specialized fields of business and commerce. The use of a calculator makes it easier for humans to perform calculation operations, but there are obstacles in the process of inputting numbers if you want to calculate the value of numbers on written media such as paper, whiteboards and so on. The user must first see the text on written media, then read it and remember it then type the writing on a calculator tool or application. The drawback of this method is that when the user forgets the writing on the written media, the user will see the written text and remember it again so that it takes longer to perform calculations using a calculator. The method used in this study is Optical Character Recognition, this method can recognize text contained in images or handwritten images of mathematical number operations. The results of the introduction of the text will then be carried out by arithmetic calculations to get the calculation results. From the trials on 20 handwritten images of mathematical number operations, the results obtained were 85% accuracy of extraction and accuracy of handwritten images that can be calculated and correct by 85%.]]>
<![CDATA[Design of Light Intensity Control Device based on LED Matrix Control Wireless Lamp ]]>
<![CDATA[Geri Renalda Ambotang]]>;
<![CDATA[Nuyono Satya Widodo]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 3 No. 2 (2021): Agustus ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v3i2.3697
<![CDATA[This research make a wireless lamp light intensity regulator device based on LED matrix control. The device regulates lamp light intensity that is conform with the eating, sleeping, reading, using a laptop activities based on the existing provisions in SNI 03-6575-2001. The Arduino Uno ATMega328 microcontroller used to control the number of LED lamps that are light up to adjust the intensity of the light that fall upon the surface (lux) according to the activity that selected by user's smartphone. The BH1750 sensor will detect the light intensity produced by the lamp as information of the lamp light intensity condition. This research has been completed and succeeded in making a wireless lamp light intensity regulator device based on LED Matrix Control which can adjust the lamp light intensity of the lamp conform with the activities that the user want to do according to SNI 03-6575-2001. The device has been successfully created with an error percentage of 1.33% on examination with four different types of activities with total of 20 trials.Penelitian ini membuat alat pengatur intensitas cahaya lampu nirkabel berbasis kendali matriks LED. Alat mengatur intensitas cahaya lampu dengan menyesuaikan pada kegiatan makan, tidur, membaca, menggunakan laptop berdasarkan ketentuan yang ada pada SNI 03-6575-2001. Mikrokontroler ATMega328 Arduino Uno digunakan untuk mengendalikan jumlah lampu LED yang menyala guna mengatur intensitas cahaya yang akan jatuh ke permukaan (lux) menyesuaikan dengan kegiatan yang dipilih melalui smartphone pengguna. Sensor BH1750 akan mendeteksi intensitas cahaya yang dihasilkan oleh lampu sebagai informasi kondisi intensitas cahaya lampu. Penelitian ini sudah selesai dilakukan dan berhasil membuat Alat Pengatur Intensitas Cahaya Lampu Nirkabel berbasis Kendali Matriks LED yang dapat mengatur intensitas cahaya lampu berdasarkan kegiatan yang akan dilakukan pengguna menyesuaikan SNI 03-6575-2001. Alat telah berhasil dibuat dengan persentase error 1,33% pada pengujian terhadap empat jenis kegiatan yang berbeda dengan total 20 kali percobaan.]]>
<![CDATA[PID Control Based DC Boost Converter on Wheeled Soccer Robot ]]>
<![CDATA[Kevin Adrianto Nugraha]]>;
<![CDATA[Tole Sutikno]]>
<![CDATA[ Buletin Ilmiah Sarjana Teknik Elektro Vol. 3 No. 2 (2021): Agustus ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/biste.v3i2.3942
<![CDATA[In this research, Proportional Integral Derivative (PID) controller is applied to the DC-DC Boost Converter system. The system is a power electronics circuit that functions to stabilize the voltage by increasing the value of the output voltage so that it is of a higher value than the input voltage without having to eliminate the relatively large power so that it can overcome the voltage shortage. Control is done by providing a signal or voltage that regulates the ON time and the OFF time of the switch. The voltage value is based on the duty cycle value which is a unit of PWM (Pulse Width Modulation). The input voltage at the boost converter tends to fluctuate and is unstable. On this basis, the output voltage must be controlled by a voltage converter that can be adjusted as desired to match a predetermined setpoint value. By setting the PWM value with the PID method, it is easier to get a constant output voltage value on the boost converter. The results obtained after using a PID control produce a very stable and constant output voltage without any ripple voltage. For the tuning parameter value used to produce a stable output voltage, the proportional value is 5, the integral value is 5, and the derivative value is 3.Pada penelitian ini diterapkan pengendali Proporsional Integral Derivatif (PID) pada sistem DC-DC Boost Converter. Sistem tersebut merupakan suatu rangkaian elektronika daya yang berfungsi untuk menstabilkan tegangan dengan menaikkan nilai tegangan keluaran sehingga bernilai lebih tinggi dari tegangan masukkan tanpa harus menghilangkan daya yang relatif besar sehingga dapat mengatasi kekurangan tegangan. Pengendalian dilakukan dengan memberikan sinyal atau tegangan yang mengatur waktu ON dan waktu OFF switch. Nilai tegangan berdasarkan nilai duty cycle yang merupakan satuan dari PWM (Pulse Width Modulation). Tegangan masukkan pada boost converter cenderung fluktuatif dan tidak stabil. Atas dasar itu tegangan keluaran harus dikendalikan oleh sebuah konverter tegangan yang dapat diatur sesuai keinginan agar cocok dengan nilai set point yang telah ditetapkan. Dengan mengatur nilai PWM dengan metode PID dapat mempermudah untuk mendapatkan nilai tegangan keluaran yang konstan pada boost converter. Hasil penelitian yang didapatkan setelah menggunakan sebuah kendali PID ini menghasilkan tegangan keluaran yang sangat stabil dan konstan tanpa adanya tegangan ripple. Untuk nilai tuning parameter yang digunakan sehingga menghasilkan tegangan keluaran yang stabil yaitu nilai proporsional adalah 5, nilai integral adalah 5, dan nilai derivatif adalah 3.]]>
