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INDONESIA
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. 1 (2024)" : 25 Documents clear
SISTEM PENGENDALIAN INTENSITAS CAHAYA PADA INKUBATOR BAYI UNTUK PROSES FOTOTERAPI MENGGUNAKAN KONTROL FUZZY Lumbantoruan, Natalia; Rahmadwati, n/a; Rusli, Moch.
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Phototherapy is one of the processes to overcome jaundice that usually occurs in premature babies, namely by providing blue light. Jaundice or hyperbilirubinemia is one of the problems or disorders in babies who experience premature birth. One of the important things in providing phototherapy is that the intensity of the light given greatly affects the effectiveness of the process.Therefore, it is necessary to control the light intensity to keep it as desired. In this research, the light intensity control system in phototherapy uses a BH1750 sensor as a sensor to detect light intensity and fuzzy logic control is used to keep the light intensity produced in the incubator within the required range, which is 19-24.5 lux. The fuzzy control used is the Sugeno method with 3 stages, namely fuzzification, rule inference, and defuzzification. The result of the system response is the light intensity as required. Testing is done by setting a set point at a light intensity of 22 lux where the settling time is obtained around 8 seconds, there is no overshoot, and has a steady state error below 5%, which is 2.27%. Keywords: Phototherapy, Light Intensity, Fuzzy Control
SISTEM PENGHITUNG KENDARAAN DENGAN OPENCV DAN MODEL PEDETEKSI PRA-TERLATIH MOBILENET SSD Fauzi, Maher; Mudjirahardjo, Panca; Razak, Angger Abdul
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Accurate vehicle detection and tracking is required in visual-based systems to perform counting, therefore vehicle detection by utilizing artificial intelligence networks to process image data CNN (Convolutional Neural Network) is introduced, but in implementing CNN several problems arise, CNN models that are often used are better in accuracy and precision, but often use excessive processing power and computing resources to work optimally, they are not compatible with low-budget platforms and systems, and not easy to use on computers without graphics support or NON-GPU computers. In this research, a vehicle counter system is built by implementing pre-trained object detection model, MobileNet SSD and object tracking algorithm MOSSE (Minimum Output Sum of Squared Error). The model and algorithm are implemented with a library for processing digital images, namely OpenCV to build a vehicle counter system with a high comparison value of the predicted number of vehicles and the actual value of the number of vehicles, has low computing power, and can be run on a NON-GPU computer. Keywords: Vehicle Counter System, OpenCV, SSD, MobileNet, MOSSE.
ANALISIS KONDISI TRANSFORMATOR DENGAN PENGUJIAN GAS TERLARUT PADA PT. PLN INDONESIA POWER GRATI PGU Imtiyaz, Kholis; Wibawa, Unggul; Dhofir, Moch.
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Abstract - Transformers have an important role in the transmission and distribution of electricity, therefore the reliability of the transformer must be maintained, especially the insulating oil, in the process the insulating oil will produce dissolved gases and this can be called fault gas, fault gas can be analyzed using DGA (Dissolved Gas Analysis) , so that it can show the diagnosis of the transformer. In the flow of this research method, first a literature study will be carried out from three main sources, namely : journals, scientific articles and e-books, especially related to dissolved gas or DGA (Dissolved Gas Analysis), then data will be taken from transformer 2.1 at PT. PLN Indonesia Power Grati PGU, where the data taken is related to the results of the DGA (Dissolved Gas Analysis) test, and the data will be analyzed using the Roger's Ratio and Duval Triangle methods The results of the influence of the long operating time have an impact on changes in several gases which have increased beyond the maximum limit, such as CO (Carbon Monoxide) and CO2 (Carbon Dioxide), and from the results of the analysis of the Roger' Ratio and Duval Triangle methods, it is known to have several different results, for the Roger' Ratio method has normal unit results, low temperature thermal, and low energy density arcing-pd and the Duval Triangle has partial discharge results, but in this test method there are also results that cannot be detected using the Duval Triangle method, these two methods have several differences related to the conditions of each method that have been tested using the same data, the differences in condition indications do not mean that one method is superior to another method, but the differences in condition indications strengthen the results of the previous method's indications so that the methods are used to reinforce each other because these methods also use different processing methods. Keywords —Transformer, Fault Gas, DGA (Dissolved Gas Analysis), Duval Triangle, Roger' Ratio
ANALISIS KEANDALAN SISTEM DISTRIBUSI 20 kV PENYULANG BUNUL PT. PLN ULP MALANG KOTA MENGGUNAKAN METODE RIA (RELIABILITY INDEX ASSESSMENT) Farraz, Dayrry Yozza; Utomo, Teguh; Wijono, n/a
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Abstract - This paper discusses the reliability analysis of the 20 kV distribution system of Bunul Feeder at PT. PLN ULP Malang Kota. Several indices used to measure the reliability level of the distribution system are SAIFI (System Average InterruptionFrequency Index), SAIDI (System Average Interruption Duration Index), and CAIDI (Customer Average Interruption DurationIndex). The objective of this research is to obtain the reliability index values (SAIDI, SAIFI, CAIDI) for the Bunul Feeder at PT. PLN ULP Malang Kota using the Reliability Index Assessment (RIA) method and single line diagram simulation on ETAP, as well as comparing these reliability index values with the SPLN 59 standard from 1985. The methods employed include the RIA method and ETAP 19.0.1 simulation software. Based on the RIA method calculations, the failure rate and unavailability values are2.7120210 interruptions/year and 12.3712701 hours/year, respectively. Meanwhile, SAIFI is 1.6761635 interruptions/year, SAIDI is 9.2354936 hours/year, and CAIDI is 5.5099002 hours/interruption. The simulation results for the reliability indices in ETAP show SAIFI, SAIDI, and CAIDI values of 2.4640 interruptions/year, 5.7485 hours/year, and 2.333 hours/interruption, respectively.Based on the results obtained, the percentage differences in the reliability index values of the RIA and ETAP methods for SAIFI, SAIDI, CAIDI respectively are 47%, 38%, 58%. The differences in values are caused by imperfect switching conditions in calculations involving components other than distribution channels. With all reliability index values from the RIA method and ETAP simulation for the Bunul Feeder of PT. PLN ULP Malang Kota being smaller than the values in SPLN 59 of 1985, the distribution system of the Bunul Feeder can be considered reliable. Keywords—Bunul feeder, reliability index, RIA method, ETAP, SPLN 59 of 1985
ANALISIS KUALITAS SINYAL 4G DENGAN METODE WALK TEST MENGGUNAKAN SOFTWARE TEMS DI AREA INDOOR Adenia, Candra; Partiansyah, Fakhriy Hario; Mustofa, Ali
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Abstract- The current cellular network in Indonesia has reached the fifth generation (5G). The uneven distribution of the fifth generation in Indonesia leads the Indonesian population to still rely on the previous generation, namely 4G. According to a survey conducted among Electrical Engineering students at Brawijaya University, 73,5% of students still use 4G cellular networks, with Telkomsel being the dominant operator at 57, 4%. Some Electrical Engineering students have reported issues, specifically in Building C, experiencing blank spots for Telkomsel's 4G network. Based on the issues mentioned above, this research aims to conduct a walk test in the indoor area of Building C, Electrical Engineering Department, Faculty of Engineering, Brawijaya University, using TEMS Pocket software. The objective is to assess the quality of the fourth-generation (4G) cellular network in the indoor area of Building C, utilizing a walk test method, and to understand the characteristics of cellular communication indoors. The research methodology begins with a literature review, followed by the walk test, data processing, analysis of the walk test results, and concluding with findings and recommendations. Parameters such as Received Signal Referenced Power (RSRP), Received Signal Referenced Quality (RSRQ), Received Signal Strength Indicator (RSSI), and Signal to Interference plus Noise Ratio (SINR) are employed to evaluate the quality of the Telkomsel 4G network. The research findings indicate that the majority of test points foreach parameter in the indoor area of Building C exhibit good signal quality based on Key Performance Indicators. However, some test points show poor quality due to obstacles in the area, leading to multipath interference that affects the Signal-to-Noise Ratio (SNR) and subsequently influences signal quality.Keywords: walk test, signal quality, 4G, multipath
ANALISIS INDIKASI KEGAGALAN TRANSFORMATOR DENGAN DATA PENGUJIAN DISSOLVED GAS ANALYSIS DI PT. PLN INDONESIA POWER GRATI PGU Prasetyo, Achmad Ari Dwi; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Problems that usually happen in power transformers are failure phenomena, both thermal failure and electrical failure. One example of this failure is overheating caused by several factors such as overloading, hysteresis losses, eddy currents, etc. Excessive heat will stimulate a reaction which will cause a decrease in the quality of the insulating oil in the transformer oil. Apart from that, there is fault gas in the oil content which causes damage to the transformer. Based on these problems, in this research the condition of the transformer and proper maintenance measures are needed. Therefore, this research is very important as a form of prevention effort so that the transformer does not suffer damage. So it is needed to test and analyze the amount of gas dissolved in transformer oil or what is called DGA (Dissolved Gas Analysis) testing. This research discusses indications of failure in unit transformator (GT) 2.2-2.3 at PT. PLN Indonesia Power Grati PGU with monitoring of fault gas H2, CH4, C2H2, C2H4, C2H6, CO, and CO2. The methods used in DGA testing are the TDCG (Total Dissolved Combustible Gas), Roger's Ratio, and Duval's Triangle methods which refer to standards IEEE C57.104 (2008) and IEC 60599 (2015). Health conditions of transformer units 2.2-2.3 in Indonesia. PLN Indonesia Power Grati PGU indicates a thermal disturbance. In this case, overheating occurs, one of which is caused by a partial discharge in the transformer. However, this is still within the permitted limits for 2.2-2.3 transformer units to operate. However, it is necessary to carry out further monitoring of the increase in the value of each gas fault. The maintenance action that must be taken is replacing the transformer oil if one of the combustible gas, namely H2, CH4, C2H2, C2H4, and C2H6 is in condition status 4 for the TDCG method, in case 5 for the Roger's Ratio method, and in the symbols T3 and DT for the Duval Triangle method. This needs to be done as a form of prevention effort so that the transformer does not breakdown. Keyword: DGA, fault gas, failure phenomena, DGA test method
ANALISIS TEKNO-EKONOMI SISTEM PEMBANGKIT HIBRID STUDI KASUS KEPULAUAN MENTAWAI Altajim, Fauzan Aiman; Utomo, Teguh; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Indonesia's electricity generation still predominantly uses non-renewable sources, while renewable energy sources are still minimal. This study focuses on the Mentawai Islands which rely on Diesel Power Plants (PLTD) with high fuel costs. This research analyzes the good potential for Hybrid Power Plants (PLTH), combining solar and diesel energy to meet 24-hour electricity needs in rural areas. Research methods in techno-economic analysis involve data collection, determining specifications for Solar Power Generation Systems (PLTS), designing PLTH systems, and simulations using Homer software. This research shows that PLTH produces 6,034,395 kWh/year, with 3.36% PLTS penetration. The cost per kWh (COE) of PLTH is IDR 4,198.50. This research highlights the potential of PLTH as an effective and sustainable energy solution in the Indonesian archipelago. Keywords: PLTH, PLTD, PLTS, Output Power
UNJUK KERJA PENGGUNAAN CONVOLUTIONAL NEURAL NETWORK (CNN) DAN SIAMESE NEURAL NETWORK (SNN) DALAM MENGIDENTIFIKASI WAJAH Airlangga, Daniar Putri; Mudjirahardjo, Panca; Rahmadwati, n/a
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Face identification is one form of security verification that is currently widely used due to its low level of fraud. Therefore, this study aims to obtain the best model with the method and parameters between CNN and SNN in identifying faces using a dataset sourced from the open-source Kaggle created by Burak from Middle East Technical University, Turkey. The dataset consists of 5 classes, each containing 5 faces with different names but the same number of faces per class. Furthermore, the existing data will undergo a preprocessing process aimed at reducing dimensions and noise in non-uniform data. Next, in this process, the data will be divided into training data and test data for further training using the Tensorflow Keras framework and the visual studio code IDE and Kaggle as a notebook. There are 2 stages of testing in this study, namely testing the performance of the modeling on the system created by using varying epochs and changes in parameters, and testing the performance of the system in performing identification. The model with the best results is the SNN method model, which has a training accuracy of up to 99% and an evaluation result accuracy of up to 98% with a prediction time of only 0.7 seconds. The results of this study indicate that the SNN method has better ability in identifying faces compared to the CNN method. Keywords— Face identification, Machine Learning, Convolutional Neural Network (CNN), Siamese Neural Network (SNN).
RANCANG BANGUN ALAT PENDETEKSI GLUKOSA DENGAN METODE NON-INVASIVE BERBASIS MACHINE LEARNING MENGGUNAKAN SENSOR GSR (GALVANIC SKIN RESISTANCE) Afini, M. Dwi Nur; Nurussa’adah, n/a; Purnomowati, Endah Budi
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Stroke is a sudden onset of neurological disorders, either focal or global, associated with cerebral circulation disorders. Strokes typically last more than 24 hours and can result in death without a known cause. It is a disease in which blood flow to the brain is obstructed, preventing the supply of oxygen and nutrients and the removal of waste products. This leads to rapid death of brain cells. The success of stroke management is highly dependent on time. Providing prompt first aid yields better clinical outcomes. However, monitoring body conditions is often neglected, and non-invasive tools for measuring blood sugar levels are lacking, which can be traumatic for users. From an economic standpoint, checking blood sugar levels is considered costly. To address these issues, technology is needed to non-invasively and regularly monitor the condition of stroke patients. The technology canprimarily monitor one of the risk factors for stroke, namely blood sugar, using a Galvanic Skin Resistance (GSR) sensor. The sensor classifies the patient's condition and provides education on reducing these risk factors. The tool's function has been tested by comparing the results of laboratory measurements, which showed an accuracy rate of 96.49% for blood sugar levels. During the testing of the monitoring application supported by the ANFIS system, the classification results of the user's condition were obtained with 100% accuracy. The testing was conducted on five patients who had high risk factors for stroke. Keywords: Stroke, Photoplethysmograph, Monitoring Application, ANFIS, Therapy.
ANALISIS KEANDALAN SISTEM JARINGAN DISTRIBUSI 20 KV DENGAN METODE FAILURE MODE EFFECT ANALYSIS DI PT PLN (PERSERO) ULP SUMBERPUCUNG PADA PENYULANG KALIPARE Hakim, Lukmanul; Utomo, Teguh; Wibawa, Unggul
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Electrical energy is generated from a plant and will be transmitted and distributed to be channeled to homes and consumed bycustomers. PT. PLN (Persero) or abbreviation of PT. Perusahaan Listrik Negara (Persero) is a state-owned company that movesand controls electricity starting from generation, transmission, and distribution to be distributed to homes and consumed bycustomers. ULP Sumberpucung or abbreviation of Sumberpucung Customer Service Unit is a sub-unit of UP3 Malang that isresponsible for customer service and overcoming electricity distribution problems with a smaller area. The calculation analysis ofthe 20 kV distribution network reliability system is a calculation analysis to find the values of SAIDI, SAIFI, and CAIDI. Thecalculation analysis carried out can use several methods, one of which is the FMEA (Failure Mode Effect Analysis) method. TheFMEA method is used to find the final results of SAIDI, SAIFI, and CAIDI values by identifying components that experienceinterference. The parameters used to determine the reliability index value with the manual calculation of the FMEA method include the failure rate of SPLN equipment, channel length, failure rate of each channel, repair time according to SPLN, repair rate, and the number of customers per distribution substation. The reliability index value can also be performed comparative analysis using ETAP 19.0.1 software. Analysis using ETAP software uses several parameters such as active failure rate, switching time, number of customers per load point, duration of component repair, and cable length. In addition, the results of the SAIDI value can be used to find the value of economic losses received by PLN in the event of a disturbance. The results of the analysis of manual calculations of the FMEA method and analysis on ETAP 19.0.1 software on the Kalipare Feeder at PT. PLN (Persero) ULPSumberpucung shows reliable results because the reliability index value is still below the provisions of SPLN No. 59 of 1985. Keywords: FMEA, ETAP, Interference Identification, Energy Not Supplied, Economic Value

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