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Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
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Core Subject : Education,
Education
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Articles 25 Documents
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Search results for , issue "Vol. 12 No. 2 (2024)" : 25 Documents clear
RANCANG BANGUN ANTENA MIKROSTRIP MEANDER LINE DENGAN MATERIAL FR-4 UNTUK SISTEM GPS TRACKER Basyar, Muhammad Aditiya Choirun; Kurniawan, Dwi Fadila; Purnomo, Muhammad Fauzan Edy
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Vehicle monitoring system or tracking system is a system that can be used to assist vehicle owners in monitoring the movement of their vehicles remotely. In the tracking system, the antenna acts as a transmitter of radio waves through the LoRa module. Antenna specifications can affect the transmission of radio frequency signals to the LoRa gateaway. This research designs a meander-line microstrip antenna as the transmitter antenna of the GPS Tracker system. Microstrip antennas have advantagesincluding thin cross-sectional area, easy fabrication, small size and light weight, and can be integrated with existing wireless communication devices. This microstrip antenna design will send data to the LoRa gateaway in the 915 MHz frequency range. There are two meander line antennas tested, namely meander line 9 and meander line 11. The meander line 9 antenna produces return loss measurements of -22.162 dB, VSWR of 1.169, and group delay of -13 ns. Meanwhile, the meander line 11 antennaproduced parameter measurements, namely return loss of -27.167 dB, VSWR of 1.092, and group delay of 194.05 ns. Keywords: Microstrip antenna, Meander line antenna, LoRa frequency, Antenna specifications
DESAIN DAN ANALISIS METODE PLUGIN REPETITIVE CONTROL UNTUK SISTEM LINEAR FASE MINIMUM Edward, Ronald; Rahmadwati, n/a; Muslim, Muhammad Aziz; Kurniawan, Edi
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Control systems have played an important role in the advancement of science and technology. One of the challenges is the use of conventional controllers such as PID (Proportional-Integral-Derivative) controllers which are less than optimal in dealing with complex systems. Therefore, there is a new theory of control called Repetitive Control (RC), RC allows robots to improve movement precision and repetitive task tracking. RC allows the robot to improve the precision of movement and repetitive task tracking. This research uses the Python programming language to design the control system and simulate the variation of the given reference signal and then an analysis is carried out which aims to determine the performance of control method is the most effective. The results of the Plug-in RC control method with three kinds of internal model variations namely modified, odd harmonics, and multi periods are then compared with the PID controller control method. The evaluation parameter values used in this study are time response, %overshoot, root mean square error (RMSE), integral time absolute error (ITAE). As a result, Plug-in RC is more effective in dealing with repetitive signals. For example, at plant J1 (waist) frequencies of 1 Hz and 3 Hz PID produces an ITAE value of 1875.372 and RMSE of 0.21699. Plug-in RC modified internal model produces ITAE value of 3.749 and RMSE of 0.00052. The Plug-in RC odd harmonics internal model produces an ITAE value of 5.753 and an RMSE of 0.00069. While at the frequency of multi periods the performance of the plug-in RC multi periods internal model is better than the PID controller, this can be seen in plant J2 (shoulder) where the Plug-in RC multi periods has an ITAE value of 8.993 and an RMSE of 0.00152, while the PID controller has an ITAE value of 3849.193 and an RMSE of 0.45739. Keywords— Control System, Proportional Integral Derivative (PID), Plug-in Repetitive Control, Intenal Model, Python
ANALISIS PERBAIKAN TEGANGAN DAN RUGI DAYA PADA PENYULANG JETIS PT PLN (PERSERO) UP3 KEDIRI MENGGUNAKAN ETAP 19.0 Allaam, Hisyam Ghozi; Utomo, Teguh; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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PLN UP3 Kediri is a company that manages the Jetis Feeder distribution channel which is facing voltage drops and power losses. There are several methods to overcome this incident, such as conductor uprating, substation voltage uprating, and capacitor bank installation. With this improvement, it is hoped that the voltage drop and power loss values will be within the range determined according to SPLN (±5% for voltage drop and -10% for power loss) and ETAP alerts will be ±1% of the nominal limit. This research aims to determine the value of voltage drop and power loss before and after the repair method is carried out and determine the most efficient method. This research shows that under existing loading conditions, the Jetis Feeder is in normal condition. Under full load conditions (100%), the Jetis Feeder has a voltage drop of 4.539% and a power loss of 3.182%. The voltage drop value in this condition is still within the safe condition limit according to SPLN, but has entered the alert condition in ETAP, namely >4%. Under these conditions, repair efforts are needed to overcome voltage drops and power losses. After carrying out repair efforts, the voltage drop and power loss values for the 150 mm2 conductor uprating were 4.445% and 5.158%, the priority conductor uprating was 4.135% and 4.658%, the substation voltage uprating was 1.986% and 4.995%, and the capacitor bank installationwas 2 .5% and 4.558%. Keywords – Voltage Drop, Power Loss, Power Flow, ETAP
RANCANG BANGUN ALAT MONITORING INFUS BERBASIS IOT DENGAN FITUR NOTIFIKASI UNTUK PEMANTAUAN PASIEN Putri, Dian Wahyuni Karna; Zainuri, Akhmad; Muslim, Muhammad Aziz
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Every medical procedure, includes the installation of an infusion, must face with the risks and side effects that can harm health. Misinfusion error often occur because infusion runs out prematurely, although they have been calculated according to the standard of individual fluid requirements. The main risk of improper disinfection is air embolism. In response to potential errors, an infusion monitoring device with a protection mechanism that detects run out of the infusion bag and the number of drops perminute is designed. To solve this problem, an infusion monitoring device with features capable of providing notification connected to the IoT system when droplets do not match, provides an estimate of the infusion time to run out, and provides a real-time estimate of infusion droplets when the roller clamp is rotated. When this condition occurs, the system helps prevent blood from rising into the infusion hose, acting as a protective measure to avoid entering the air into the blood vessels. This study was conducted by conducting a test on the drip sensor used by using calculations according to the applicable conditions of intravenous administration. The results of this study include accuracy of intravenous drip detection sensors (photodiodes) above 96% in actual conditions, with sensors working more accurately in dark environments. The infusion volume reading using a load cell sensor has a high accuracy of 99%, Information related to infusion volume, number of drops/minutes, estimated time of infusion, and notification of infusion warnings can also be accessed properly. Keywords: photodiode, infusion, monitoring, iot, load cell
UJI KARAKTERISTIK CAMPURAN MINYAK KELAPA SAWIT DENGAN MINYAK BIJI BUNGA MATAHARI SEBAGAI ISOLASI PADA TRANSFORMATOR Putra, Deni Dwi Rahman; Dhofir, Moch.; Utomo, Teguh
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Transformer oil is a type of liquid insulation used for insulators and coolants in transformers. Until now, the main component in insulating oil production still predominantly comes from petroleum. The availability of petroleum will increasingly run out because petroleum is a non-renewable material. Efforts are needed to reduce the use of petroleum, one way that can be done is to use vegetable oil as liquid insulation. One of the vegetable oils that can be used as liquid isolation is palm oil. However, palm oil still has a low dielectric strength, so sunflower seed oil which has a high dielectric strength is mixed so that the dielectric strength of palm oil can be increased. This research discusses the effect of adding sunflower seed oil to palm oil on the electrical properties of relative permittivity and conductivity as well as breakdown voltage. So in this research four tests will be carried out, namely water content reduction testing, relative permittivity testing, conductivity testing and breakdown voltage testing. The sunflower seed oil used uses a composition of 5%, 10%, 15%, 20%, 25%, 30%. Based on the test results that have been carried out, palm oil has a breakdown voltage value of 24.85 KV/2.5 mm. This causes the breakdown voltage value to not meet the IEC 156 standard of 30 KV/2.5 mm. Mixing sunflower seed oil with palm oil can increase the breakdown voltage value of palm oil. The more sunflower seed oil in the composition, the breakdown voltage value will also be greater. A composition of 30% sunflower seed oil has abreakdown voltage value of 44.89 KV/2.5 mm. The value of reducing water content, relative permittivity and conductivity of palm oil is quite large with values respectively 600 PPM; 3.56 F/m; 19.9 × 10^(-10) S/m. The greater the composition of the sunflower seed oil mixture, the reduction in water content, relative permittivity and conductivity will decrease. A mixture with a composition of 30% sunflower seed oil has relative permittivity and conductivity values of 300 PPM respectively; 3.2; 2.12 × 10^(-10) S/m. This shows that the greater the composition of sunflower seed oil, the better the insulating quality. When compared with Shell Diala-B mineral oil, it has a breakdown voltage of 19.61 KV/2.5 mm with a relative permittivity value of 2.95 and a conductivity value of 1.99 × 10^(-10) S/m and a water content reduction value of 0 PPM. Keywords— mixture, palm oil, sunflower seed oil, breakdown voltage, conductivity, relative permittivity
ANALISIS COVERAGE AREA OPENBTS MENGGUNAKAN USRP N210 Putra, Muhammad Daffa Ramadhan; Kusmaryanto, Sigit; Mustofa, Ali
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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The development of cellular communication technology has transformed the way we interact and access information in ourdaily lives. Cellular networks based on GSM (Global System for Mobile Communications) remain one of the dominant technologies in the telecommunications world. However, in some cases, challenges related to signal coverage still persist, especially in remote areas or those affected by disasters. This research aims to address these issues. Researchers have built a GSM network using the Open BTS system, an open-source software project that has revolutionized the way cellular networks can be implemented flexibly and affordably. The construction of Open BTS is much more affordable than building conventional BTS, and in times of disaster, communication is crucial and must be quickly available. By using Open BTS and USRP N210 hardware, there is potential toovercome signal coverage issues in GSM networks. Based on the experimental data conducted, the placement distance of Open BTS and the height placement of Open BTS antennas need to be considered. This is because the farther the distance between Open BTS and the users' mobile phones, the higher the delay experienced during call and SMS services. In this study, the furthest distance of 20 meters and a height of 3 meters resulted in an average call delay of 14.27 seconds and an average SMS delay of 34.84 seconds. Conversely, the closest distance of 5 meters and an Open BTS antenna height of 0 meters compared to the user's phone resulted in an average call delay of 9.15 seconds and an average SMS delay of 11.65 seconds. The distance and height variations of Open BTS also affect the signal strength received by the users' phones. Keywords: Mobile Communication, OpenBTS System, GSM Network, Signal Coverage, Antenna Placement Effects
SISTEM PENGENDALIAN SUHU HOTEND PADA PEMBUAT FILAMEN PET BERBAHAN BOTOL BEKAS Taftazani, Moch. Aden; Rusli, Moch.; Muttaqin, Adharul
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Indonesia, as the fourth most populous country in the world, faces serious challenges related to the issue of plastic waste. With a total population reaching 273.8 million in 2021, Indonesia is declared as the world's second largest contributor to plastic waste after China. Every year, approximately 3.2 million tons of plastic waste are poorly managed, with much of it ending up in the ocean. This is exacerbated by the low percentage of plastic waste recycling in Indonesia, which is less than 5%. One of the most common types of plastic waste is plastic bottles, particularly those made of Polyethylene Terephthalate (PET). It is estimated that over 580 billion PET bottles were produced and consumed worldwide in 2021. Recognizing this, plastic waste, especially PET bottles, becomes a promising recycling target. Therefore, a PET filament maker machine made from recycled bottles was designed. This research focuses on designing a temperature control system for the hotend of the filament maker machine using recycled bottles. In this study, a PID controller was used with parameter determination using the Ziegler-Nichols method, specifically the first method known as the reaction curve method. The test results indicate that the temperature control system can function effectively in maintaining the system response according to the desired setpoint values, with PID controller parameter values of Kp = 27.51, Ki = 1.06, and Kd = 178.8. The system response has a settling time of 2,350 seconds, a steady-state error of 0.2%, an overshoot of 12.74%, and a recovery time of 71 seconds when subjected to disturbances. Keywords: temperature control, filament maker, PET, PID controller, Ziegler-Nichols
RANCANG BANGUN SISTEM MONITORING SUHU AIR, KETINGGIAN AIR, DAN KADAR TDS LARUTAN NUTRISI PADA TANGKI HIDROPONIK BERBASIS INTERNET OF THINGS Saputra, Andhika Rahmat; Maulana, Eka; Nurussa’adah, n/a
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Hydroponic cultivation is a cultivation technique that utilizes water as a growing medium. The advantages of hydroponic techniques include a low possibility of pest attacks, efficient land use, soilless plant growth, increased quantity and quality of production, and better cleanliness compared to conventional agriculture. In hydroponic cultivation, important aspects to be considered are the availability of water, water temperature, and the Total Dissolved Solids (TDS) level in the nutrient solution flowing through the plant roots. In practice, manual monitoring of water availability, water temperature, and TDS levels in the nutrient solution in hydroponic tanks becomes an issue for farmers at Happy Tani farm. Manual data monitoring leads to irregular data recording, hindering the maximization of hydroponic system productivity. To address this issue, a study was conducted to design an Internet of Things-based monitoring system capable of detecting water temperature, water level, and TDS levels in hydroponic tanks. This system involves DS18B20 sensors for detecting water temperature, Ultrasonic AJ-SR04M sensors for detecting water level, and DFRobot Gravity TDS sensors for detecting TDS levels in the nutrient solution. The system can provide real-time measurement data and tank condition alerts to farmers through an Android application or website connected to the internet. The system also features datalogging on a Google Spreadsheet website for storing measurement data at regular intervals. The research involved system design, sensor testing, TDS level measurement, data transmission, and hydroponic tank condition alert systems. The results of this research indicate that the designed system is capable of transmitting data to the application and website, providing tank condition alerts, and accurate data measurement with error rates for DS18B20 sensors at 0.69%, Ultrasonic AJ-SR04M sensors at 0.5%, DFRobot Gravity TDS sensors for EC at 3.16%, and TDS at 3.37%. Keywords: hydroponic, monitoring, water temperature, water level, total dissolved solids, Internet of Things
ANALISIS PENGARUH KADAR AIR DAN CAMPURAN FENOL TERHADAP TEGANGAN TEMBUS MINYAK KEMIRI SUNAN SEBAGAI PERTIMBANGAN MINYAK ISOLASI ALTERNATIF Ardiansyah, Muhammad Doni; Dhofir, Moch.; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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This thesis discusses the enhancement of the dielectric strength of sunan candlenut oil by using phenol additives so that it can be used as an alternative liquid insulation for high voltage equipment. The increase in breakdown voltage level was achieved by adding various mixtures of phenol. Purification through heating was carried out to reduce the water content in the sunan candlenut oil. Electrical testing (breakdown voltage test circuit), physical testing (water content testing using the oven method), as well as calculating conductivity values (by measuring leakage current using a DC circuit) and permittivity (using an LCR multimeter) were conducted. These tests were performed to determine the feasibility of sunan candlenut oil as an insulating oil. The test results showed that the breakdown voltage of pure sunan candlenut oil was 11.67 kV/2.5mm, which did not meetthe SPLN 49 standard of 1982, which is 30kV/2.5mm. The addition of phenol successfully increased the breakdown voltage to 61.91 kV/2.5 mm, and with heating, it reached 67.27 kV/2.5mm. The highest breakdown voltage of 67.27 kV/2.5mm was obtained by mixing 8% phenol (32 ml) and heating the sunan candlenut oil simultaneously. The test results of relative permittivity showed values of pure sunan candlenut oil and 8% phenol-added sunan candlenut oil as 9.89 and 10.25, respectively. In the conductivity test, the values for pure sunan candlenut oil and 8% phenol-added sunan candlenut oil were 22,6×10−9 S/m and 21,6×10−9 S/m,respectively. It can be concluded that the addition of phenol can inhibit the occurrence of breakdown voltage and maintain oil stability, while heating can reduce the water content from 900 ppm to 596.7 ppm. In terms of water content, the modified sunan candlenut oil does not yet meet the maximum standard allowed by SPLN 1982, which is ≤30 ppm. However, in terms of breakdown voltage, the modified sunan candlenut oil has met the SPLN 49 standard of 1982, which is 30 kV/2.5 mm. Keyword: Phenol, water content, insulating oil, kemiri sunan oil, breakdown voltage. conductivity, relative permittivity
ANALISIS PENGARUH SUHU DAN LAMA PEMANASAN MINYAK DEDAK PADI TERHADAP TINGKAT KADAR AIR DAN TEGANGAN TEMBUS Rizal, Mohammad Iqbal Fakhrur; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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This journal discusses the effect of heating with various temperature and duration variations on rice bran oil regarding its moisture content and breakdown voltage, aiming to be used as an alternative liquid insulation oil in high-voltage equipment. Oil purification through heating is conducted to reduce the moisture content in rice bran oil with temperature variations of 40°C, 50°C, 60°C, and 70°C, and duration variations of 15 minutes, 30 minutes, 45 minutes, and 60 minutes. Electrical testing (using AC breakdown voltage test circuit with capacitive voltage divider method) and physical testing (moisture content reduction test using oven heating method (gravimetric)) are performed to determine the feasibility of rice bran oil as an alternative liquid insulation oil. The test results showed that the breakdown voltage of pure rice bran oil was 17,39 kV/2,5 mm, which did not meet the SPLN 49 standard of 1982, which is 30 kV/2,5 mm before processing. Heating the rice bran oil successfully increased the breakdown voltage to 56,26 kV/2,5 mm, achieved when the oil was treated with a heating temperature of 70°C and a heating duration of 60 minutes. It was found that heating the rice bran oil could reduce its moisture content from 1130 ppm to 624,92 ppm. Thus, it can be concluded that heating significantly affects the moisture content and breakdown voltage of rice bran oil. In terms of moisture content, rice bran oil does not yet meet the maximum standard allowed by SPLN 49 of 1982, which is 30 ppm. However, in terms of breakdown voltage, rice bran oil after heating meets the SPLN 49 standard of 1982, which is 50 kV/2,5 mm after processing. Keywords: Insulation oil, rice bran oil, moisture content, breakdown voltage.

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