Jurnal Elementer (Elektro dan Mesin Terapan)
Jurnal ELEMENTER is a National journal providing authoritative sources of scientific information for researchers and engineers in academia, research institutions, government agencies, and industries. We publish original research papers, review articles, and case studies focused on Electrical Engineering, Machine Engineering, and Mechatronics Engineering fields. All papers are peer-reviewed by at least two referees. Jurnal ELEMENTER is published and imprinted by Politeknik Caltex Riau and managed to be issued twice in every volume a year ( May and November ).
Articles
165 Documents
<![CDATA[Modifikasi Frekuensi Switching pada LED Driver Menggunakan Oscillator Lorenz Analog untuk Mereduksi Conducted EMI ]]>
<![CDATA[Mohammad Yanuar Hariyawan]]>;
<![CDATA[Noptin Harpawi Harpawi]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 6 No. 2 (2020): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v6i2.3600
<![CDATA[Light emitting diode (LED) are becoming increasingly popular in a variety of applications, due to low power, high efficiency and low maintenance. To achieve high efficiency, switched mode power supply (SMPS) is applied. SMPS is implemented with pulse width modulation (PWM) which operates at a constant frequency. Constant switching frequency produces significant emissions in a number of frequencies, this emission is called electromagnetic interference (EMI). The EMI generated includes the fundamental operation frequency of the power supply and its harmonics through a conducted and radiated mechanism. As a result, SMPS has the potential to be unable to meet the electromagnetic compatibility (EMC) standard. Modification of switching in SMPS using spread spectrum techniques is a cheap and efficient solution in EMI mitigation. In this research, switching modification is done on LED drivers with chaotic Lorenz signals. The Lorenz chaotic signal is applied to the LED evaluation board and then the EMI performance is seen compared to when the LED driver works with a constant frequency. When applied to the Lorenz chaotic signal there was a decrease in the level of emission of the largest EMI which is equal to 16.5 dBµV]]>
<![CDATA[COMPARISON OF 3D PRINTER AND WOOD CASTING PATTERN ]]>
<![CDATA[Hamid Abdillah]]>;
<![CDATA[Muhammad Munadi]]>;
<![CDATA[Nur Wachid Supriyadi]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 6 No. 2 (2020): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v6i2.3636
<![CDATA[Cast patterns are replicas of objects used as a reference in the casting process. Making cast patterns is still dominated by conventional processes using wood. This study aims to compare the conventional wood cast patterns with cast patterns made using a 3D printer. This research was conducted by making cast pattern products using conventional methods and 3D printers. Conventional pattern making uses a woodworking process while the 3D printer pattern uses a 3D printer stereolithography (SLA) system. Conventional cast patterns and 3D printer products are then compared in terms of geometric quality and size precision. The results obtained are the cast patterns made with a 3D printer have an advantage in precision the size is better than conventional patterns. As for the quality of the geometry and surface roughness both methods have good results. this opens the opportunity to conduct a more in-depth review of 3D printer applications in the metal casting sector]]>
<![CDATA[Rancang Bangun Ransel Skateboard Listrik dengan Motor DC Brushless ]]>
<![CDATA[Tianur Tianur]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 6 No. 2 (2020): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v6i2.3696
<![CDATA[Electric Skateboard Backpack is a means of transportation used to facilitate moving from one place to another. This means of transportation is designed as a means of transportation that is easy to carry, does not require large space for storage, esthesis and environmentally friendly. This Electric Skateboard Backpack is designed with a simple frame which consists of a Skateboard storage area and an easily foldable frame system that uses its users when carrying and storing it. This Electric Skateboard Backpack uses a brushless DC Motor drive system for the hub type because it is efficient, environmentally friendly and suitable for electric vehicle. This Electric Skateboard Backpack has a length dimension of 800 mm and a height of 700 mm and has a frame system that can be folded thereby reducing the dimensions of its length. Based on testing this Electric Skateboard Backpack can carry loads that can be transported weighing 80 kg and the use time of this tool can reach 50 minutes of normal use. The speed that can be achieved is 7,2 km / hr in no-load conditions on the rough surface.]]>
<![CDATA[Rancang Bangun Alat Pengecat Dinding Semi Otomatis Berbasis Mikrokotrolel ATMega8535 ]]>
<![CDATA[Jupri Yanda Zaira]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 6 No. 2 (2020): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v6i2.3786
<![CDATA[The painting process is a necessity to beautify a room, where automatic wall painting tools can be used as a solution to lighten human work that can help routine tasks in the process of painting walls in a room. The system used in the design of the automatic wall painting tool is to use the ATMega8535 microcontroller control system. The test is carried out by making the initial settings on the painting tool that has been determined, after which the controller button is activated, and then the tool will immediately paint the wall semi automatically, where the movement of the tool arm uses a DC motor power window, and the paint brush uses a rolers that is usually used to paint wall in a room. The movement of the design and construction of this wall painting tool is carried out automatically, where the command from the push button will be processed in the microcontroller, namely ATMega8535 before being forwarded to the actuator, namely the DC motor which is regulated by the motor driver. The results of this study are this wall painting tool has a painting range of 2 m x 2 m with a time of 27.3 minutes, and to get an even result, it must be done 3 times. The maximum motor capacity required to operate the wall painters for the power window motor is a maximum of 18.13 VA, and for a DC motor the maximum is 18.32 VA.]]>
<![CDATA[Peningkatan Gain Antena Mikrostrip Patch Rectangular dengan Metode Element Parasitic Pada Frekuensi 2.1 GHz ]]>
<![CDATA[Wira Indani]]>;
<![CDATA[Jhones Rona Sembiring]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 6 No. 2 (2020): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v6i2.4368
<![CDATA[The development of the world of wireless telecommunications is quite rapid, this is because the mobility of people who are increasingly demanding to move and move always, and dependence on communication media is quite high. One of the most influential devices in wireless media is an antenna. Where in this paper will discuss the design of a microstrip antenna in order to increase the gain using the parasitic element method and the iteration technique of the slot position with the rectangular slot to increase the return loss value on the antenna. For the type of substrate used is FR-4 Epoxy with h = 1.6 mm ε_r = 4.6 and the feeding technique used is the microstrip line. From the research results, it was found that adding parasitic techniques to the antenna was able to produce a gain twice as large as without parasitic elements. In addition, when the state is added the slot position iteration technique is able to produce a better return loss value than the patch optimization state. So that the optimal results are obtained on a single band 2.1 GHz antenna with a return loss of -13.20 dB VSWR 1.53 impedance 50.44 Ω and a gain of 4.79 dB.]]>
<![CDATA[Rancang Bangun Drone Quadcopter Tanpa Awak Penyiram Pupuk Tanaman ]]>
<![CDATA[Cyntia Widiasari]]>;
<![CDATA[Raja S. Agustinus Dulan Este]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 6 No. 2 (2020): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v6i2.4396
<![CDATA[Currently, the fertilization process is carried out by farmers is still classified as manual. This method forces directly contact with fertilizers, which are chemicals. Continuoulys contact can cause itching or irritation of the skin and can even cause an infection of the skin. Advances in technology have enabled humans to create quadcopters that can help the fertilization process. The quadcopter designed in this research is equipped with a motor pump that will activate the fertilizer sprinkling system. Arduino and LDR sensors function to make the quadcopter automatically spray fertilizer according to the predetermined Waypoint. The information received by the fs-ia6b receiver module will be processed by AMP Pro which will later control the quadcopter system. ESC (Electronic Speed Controller) as motor speed control as well as supporting devices and devices such as a compass as directions and Mission Planner software to support automatic flying to the destination. The test results showed that the position error of spraying the appropriate fertilizer at a predetermined point turned out to have a shift in position. The point shift is 0.2 - 0.5 meters. The quadcopter can lift loads stably from 300-600 ml, with a battery capacity of 5500 mAH and a voltage of 22.2V. The quadcopter can fly without additional load for 10-15 minutes. When the 600 ml is added, the quadcopter can fly for about 7-8 minutes. Keywords: Fertilization, Quadcopter, AMP Pro, Waypoint, Mission Planner.]]>
<![CDATA[RANCANG BANGUN SISTEM PENGERING GAPLEK TIPE HIBRIDA ANTARA EFEK RUMAH KACA (ERK) DAN TUNGKU BIOMASSA ]]>
<![CDATA[Brahmantya Aji Pramudita]]>;
<![CDATA[Bandiyah Sri Aprillia]]>;
<![CDATA[Achmad Rizal]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 6 No. 2 (2020): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v6i2.4423
<![CDATA[The greenhouse system works by utilizing solar thermal energy. It has a deficiency because it depends on weather to get maximum solar thermal energy. This deficiency can interfere with the drying process of plantation products, especially gaplek. Therefore, biomass furnace is added to overcome the dependence of solar thermal energy. The result of the proposed hybrid dryer system can control the temperature below 60℃. Moreover, the humidity can reach a minimum point of 60% while the temperature is 57℃. Those results show the system can give nomerous dry air to the dryer room because the greenhouse system is equipped with an exhaust fan. Thus, gaplek can appropriately dry according to the desired grade. Then, the cost of operating the proposed hybrid drying system is inexpensive, which is Rp 158.194,65 per year.]]>
<![CDATA[Alat Pemeras Lendir (Depulper) dan Pengering Biji Kakao Berbasis Programmable Logic Controller (PLC) ]]>
<![CDATA[retno tri wahyuni]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 6 No. 2 (2020): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v6i2.4431
<![CDATA[Kualitas biji kakao kering sangat tergantung pada proses pengeringannya. Laju pengeringan biji kakao perlu diatur agar kualitas biji kakao kering tetap terjaga. Laju pengeringan yang terlalu cepat menyebabkan asam asetat terperangkap dalam biji yang mempengaruhi aroma dan rasa. Laju pengeringan yang lambat menyebabkan biji kakao membusuk atau tumbuh tunas. Proses pengeringan biji kakao dapat dilakukan secara konvensional menggunakan panas matahari atau menggunakan mesin pengering. Penggunaan mesin pengering memungkinkan pengeringan kapan saja tanpa dipengaruhi cuaca. Mesin pemeras dan pengering biji kakao merupakan alat yang dirancang dari segi mekanik dan elektronik agar dapat mengeringkan biji kakao dengan baik. Pengujian secara mekanik menunjukkan bahwa mesin cukup stabil untuk mengeringkan kakao sampai dengan berat 5Kg dengan putaran motor maksimal 1000rpm. Sistem elektronik terdiri dari bagian input, kontroller dan output. Bagian input terdiri dari tombol start stop dan sensor thermocouple, kontroller berupa programmable logic controller (PLC) sedangkan output berupa elemen pemanas (heater) dan motor AC. Pada mesin pengering biji kakao ini, suhu yang paling sesuai agar laju pengeringan tepat adalah sebesar 500 Celcius. Silinder pengering diputar menggunakan motor AC agar energi panas dapat tersebar secara merata. Hasil uji coba menunjukkan bahwa mesin pengering dapat mengontrol suhu silinder stabil disekitar 500 Celcius dan dapat mengeringkan biji kakao dalam waktu 3,sampai dengan 5 jam tergantung berat biji yang dikeringkan dan kandungan airnya. Konsumsi daya listrik rata-rata pada mesin adalah sebesar 0,542 KWh.]]>
<![CDATA[Manajemen Ketersediaan dan Penggunaan Air pada Rumah Tangga Berbasis IoT ]]>
<![CDATA[Mochamad Susantok]]>;
<![CDATA[Tama Ramadhan]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 7 No. 1 (2021): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v7i1.3743
<![CDATA[Water one of important resource which needs to be managed wisely, especially at home usage. Water management at home is about control water availability on a water tank and monitoring how many liters of daily usage. To improve that issue, in this paper we propose an integrated system that allows managing water in two functions, first to maintain the water level in the water tank is about 15%-85% from water tank capacity. Second, users can monitor water usage real-time in daily for efficiency purposes. This system consists of sensors that connect through the internet using NodeMCU ESP8266 as a microcontroller to collect data of sensors and send them to the Blynk cloud server as an IoT platform. Another side, the Blynk app installed on the user smartphone can read data sensors that storage in the Blynk server, as monitoring to analyze water usage and water level in the water tank. The result of this system is working properly with a percentage error 1,96% - 3.84% for minimum and maximum threshold control water level in the water tank. The accuracy of water usage is about 98,28% or 1.72% error rate. This system proved can help the user easily with their smartphone to manage water availability automatically and to analyze water usage for efficiency purposes.]]>
<![CDATA[Klasifikasi Suara Paru Normal dan Abnormal Menggunakan Discrete Wavelet Transform dan Jaringan Saraf Tiruan yang Dioptimasi dengan Algoritma Genetika ]]>
<![CDATA[Achmad Rizal]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 7 No. 1 (2021): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v7i1.4388
<![CDATA[The human body consists of several vital organs that have an important role in humans life. One of the vital organs of humans is the lungs, which is responsible for the respiratory system to meet the body's oxygen needs. Respiratory system disorders can cause death. One method doctors use to diagnose lung disorders is by listening to breathing sounds using a stethoscope. However, the use of a stethoscope can still be misdiagnosed due to several factors, such as the doctor's ability, doctor's experience, doctor's sensitivity, and similar lung sound patterns. In this study, lung sounds classification using the Discrete Wavelet Transform (DWT) method and Artificial Neural Networks were optimized with Genetic Algorithms. Lung sounds are considered as sounds from the respiratory system, then normalized, and the DWT coefficient is calculated. The lung sound signal characteristics are obtained by calculating the entropy at the DWT coefficient. Furthermore, the classification is solved using Artificial Neural Networks and optimized with Genetic Algorithms. Based on this solution, the classification of lung sounds can be completed with an accuracy of up to 63.71%]]>
