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INDONESIA
Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
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Core Subject : Education,
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Articles 2,116 Documents
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RANCANG BANGUN SISTEM PENGENDALIAN LINGKUNGAN PADA TANAMAN MICROGREEN BUNGA MATAHARI DENGAN METODE FUZZY LOGIC Abrar, Fachri; Nusantoro, Goegoes Dwi; Maulana, Eka
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Abstract

Microgreens are plants that require little harvesting time and can be grown indoors. One of the plants that can be grown withmicrogreen is sunflowers. However, growing microgreen sunflowers has problems, namely the growth of mold, and long legs.Some of the factors that affect this are temperature, humidity, and light. Microgreens can be grown indoors, but the indoorconditions are not suitable for the needs of microgreens. The average indoor temperature is 27°C, the air humidity is 80%, and itlacks light supply. Meanwhile, the ideal temperature required by sunflower microgreen is 20-25°C and the ideal humidity is 40-60%. With these conditions, an environmental control system for sunflower microgreen is needed. There are two systems made,namely the temperature and humidity control system with fuzzy logic in controlling the fan speed and the lighting system with LEDlights and lighting for 16 hours. Tests conducted show that the DHT22 sensor used has a temperature accuracy of 99.58% andhumidity accuracy of 99.97%. Testing of the entire system shows that the growth box during the day with the control systeminstalled, can reduce the temperature to an average of 23.16% and humidity of 51.63%. While at night the temperature can reach22.7% and humidity reaches 52.48%. This system can reduce the temperature and humidity to be in accordance with the needs ofmicrogreen sunflowers and fuzzy logic control system can improve the temperature drop to be more stable and close to the setpoint, which is 23°C temperature and 50% humidity. Keywords: microgreen, fuzzy logic, control system, growth box
DESAIN SIMULASI SISTEM KEAMANAN BERBASIS PLC DAN PENGENDALIAN KELEMBAPAN MENGGUNAKAN PID CASCADE PADA COLD STORAGE PASCAPANEN Wibowo, Ellena Widya; Rusli, Moch.; Abidin, Zainul
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Abstract

Cold storage plays a crucial role in maintaining the freshness and quality of post-harvest products during distribution, which is key to reducing food loss and food waste. In Indonesia, food loss and food waste account for a total of 31% of food production, with economic losses amounting to approximately 550 trillion rupiah per year. One of the main challenges in cold storage is the optimal regulation of temperature and humidity, which can now be addressed with the use of environmentally friendlyhydrocarbon refrigerants. However, the potential hazards of hydrocarbon leakage, such as food contamination by carcinogeniccompounds like benzene, necessitate advanced safety systems. This study proposes the design of a comprehensive simulation system for safety and control in post-harvest cold storage using Schneider Modicon TM221 PLC and Weintek HMI. The humidity control system employs PID cascade to regulate the flow control of the humidifier, with PID tuning using the first Ziegler-Nichols method. This system aims to enhance cooling efficiency while ensuring the quality and safety of stored products. Through comprehensive simulation, this study is expected to provide deep insights into the interaction between control and safety systems and their contribution to reducing food loss and maintaining the quality standards of post-harvest products. Keywords: Cold Storage, Hydrocarbon Refrigerants, PLC, HMI, PID Cascade Control, Humidity Control.
EVALUASI SUSUT DAYA AKIBAT DAMPAK HARMONISA PADA TRAFO DISTRIBUSI PT. PLN (Persero) UP3 SURABAYA SELATAN ULP NGAGEL SURABAYA Suwarno, Nastiti Viononny; Utomo, Teguh; Wijono, n/a
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Abstract

Harmonic is a disturbance in the electric power distribution system caused by current and voltage wave distortion. This distortion generally occurs due to the presence of waves with different frequencies, which is the result of multiplying integers with a frequency of 50 Hz. Transformers, which are important tools and often used in electric power systems, can be influenced byharmonics and experience negative impacts. Harmonics can affect all components in an electric power distribution system, although the resulting effects and impacts vary. However, generally, harmonics can cause performance degradation and may also damage distribution components. Because of this, it is important to supervise the impact of harmonics on distribution transformers, which are very important components in electric power systems. If the harmonic level is above the specified limit, it will cause several problems, one of which is the loss in the distribution transformer. To determine the effect of harmonics on power losses on several distribution transformer samples, it is done using the harmonic measurement method on each distribution transformer sample in the ULP Ngagel area with the help of the HIOKI CM-3286-50 multimetre for further data processing. The data used is in the form of the results of measuring power, current, voltage, and THD (Total Harmonic Distortion) of current and voltage. The results obtained after data processing are, can determine the difference in efficiency, loss-loss, effect of current before and after being affected by harmonisa, which harmonisa has a negative effect on the transformer in the form of decreasing efficiency, increasing loss-loss, heating of the transformer caused by excessive current, and so on. Keywords: distribution transformator, power losses, harmonic, total harmonic distortion
PENGARUH PENGOPERASIAN AIR CONDITIONER TERHADAP KUALITAS TEGANGAN DAN ARUS GERBONG KERETA K3 BUATAN PT INKA Putra, Ade Mahendra Darma; Hasanah, Rini Nur; Wibawa, Unggul
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Abstract

One device that is a nonlinear load is AC (Air Conditioner) or air conditioner. This can happen because of the use of induction motors in AC which work using the principles of electromagnetic induction so that they have saturation properties or conditions where the current is not proportional to the voltage. In the manufacture of train carriages by PT INKA on the 612 SS New Generation Train Unit project, two units of AC with specifications of 20,000 kCal, 10 kW are used in each carriage. The use of thisload has the potential to produce harmonic distortion in it. This research focuses on the effect of using AC on the quality of voltage and current waves that occur in K3 train carriages. The research process was carried out by taking in 3 conditions, namely without AC load, AC load, and overall load. The tools used are a Hioki CM3286-50 clamp meter and an oscilloscope. From the test results, it is known that the AC used in K3 train cars produces a THDv of 1.71% R phase, 1.67% S phase and 2.17% T phase. Meanwhile, THDi is 4.94% R phase, 6.37% S phase, and 6.79% T phase. The use of AC load does not have a significant effect on voltage harmonics but has a big effect on current harmonics which when there is no AC load produces a THDi of 59.49% R phase, 29.98% S phase, and 118.14% T phase. However, after using an AC load it produces a THDi of 4.31% R phase, 4.75% S phase, and 6.35% T phase. Because AC has a large current, the THDi value tends to be similar to AC load conditions only. It can be concluded that energysaving lamp loads containing power converter components produce higher harmonics than induction motor loads on AC. Apart from that, the THDv and IHDv values from various load conditions meet the IEEE 519-2014 standard, namely a maximum of 8% for THD and 5% for IHD. The THDi and IHDi values at full load conditions also meet IEEE 519-2014 standards, namely a maximum of 8% for TDD and 7% for IHD orders 3 to 11. Keywords: Harmonics, AC, Non-linear, Voltage, Current
IDENTIFIKASI JENIS TANAH MENGGUNAKAN CONVOLUTIONAL NEURAL NETWORK (CNN) DENGAN ARSITEKTUR RESIDUAL NETWORK (RESNET-50) DAN MOBILE NETWORK (MOBILENETV2) Syarifah, Naily; Mudjirahardjo, Panca; Razak, Angger Abdul
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Abstract

The research was conducted to identify soil types using artificial intelligence using the Convolutional Neural Network method.(CNN). This is done to help young farm activists stay up-to-date to get land use information, i.e. by helping in optimizing theidentification of land or land as a growing medium. The study uses the MobileNetV2 and ResNet-50 architectures to identify different soil types. Both architectures compared their performance in identifying soil types through the texture and colour taken on the test image set data. Before doing the training of course the data will be used through pre-processing for the consistency of input and maximize the modeling process. Both were tested by performing several scenarios to obtain each the best performance results of the optimizer, the number of epochs and the learning rate values. Models of both architectures have a high degree of accuracy and precision. 3. For the MobileNet architecture, the V2 produced models with accuracy values of 91.91%, loss of 90.87%, and a prediction time of 0.108 seconds. And for the ResNet-50 architecture the model produced a precision value of 99.08%, precision 99.11%, recall 99.12%, F1-score 99.10%, specification 99.85%, loss 5.02% and forecast time of 0.037 seconds. Keywords: CNN, Soil Classification, MobileNetV2, ResNet-50
PERANCANGAN SISTEM INVERSE KINEMATICS LENGAN ROBOT OPEN MANIPULATOR-X DENGAN METODE JARINGAN SARAF TIRUAN Nagara, Alun Darma; Muslim, Muhammad Aziz; Nusantoro, Goegoes Dwi
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
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Abstract

The robot manipulator is an example of the advancement in control technology in the current industrial era. Robots with 4 degrees of freedom (DoF) in their movements are often used to increase efficiency and reduce accident risks in the industry. However, in solving the inverse kinematics of the robot manipulator, there is a computational complexity problem in determining the joint angle values. Therefore, this study aims to solve the inverse kinematics problem using artificial neural networks on the Robot OpenMANIPULATOR-X. This research involves data collection through forward kinematics, designing an artificial neural network model by testing the number of hidden layers, neurons, and learning rate, and testing the points of the neural network model results on the robot in a real plant. Keywords—Robot Manipulator, Inverse Kinematics, Artificial Neural Network
APLIKASI TOPOLOGI VIENNA RECTIFIER DENGAN MENGGUNAKAN KONTROLER BERBASIS VOC-PI Rahmah, Linda Safina; Djuriatno, Waru; Rusli, Moch.
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
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Penelitian ini menjelaskan aplikasi topologi Vienna Rectifier dengan menggunakan kontroler berbasis VOC-PI. Rangkaian Vienna Rectifier dengan kontroler berorientasi tegangan (VOC) yang dikombinasikan dengan kontroler PI digunakan untuk mengurangi distorsi harmonik dari arus masukan dan regulasi tegangan keluaran. Penulis melakukan simulasi dengan menggunakan perangkat lunak PLECS 4.7.3 untuk membandingkan antara rangkaian penyearah tiga fasa dan rangkaian Vienna Rectifier menggunakan kontroler VOC-PI. Hasil dari simulasi rangkaian penyearah tiga fasa, menunjukkan variasi nilai THD yang cukup tinggi pada berbagai kondisi beban (25%, 50%, 75%, dan 100%) melebihi nilai standar IEEE 519-2014 tentang THD arus masukan, yakni sebesar 21,22%, 27,97%, 32,57%, dan 36,54%. Sedangkan dengan rangkaian Vienna Rectifier dengan tambahan kontrol VOC-PI menunjukkan THD yang lebih kecil dan memenuhi standar arus THD masukan IEEE, yakni sebesar 4,28%, 2,8%, 2,43%, dan2,19%. Kata kunci— Penyearah Tiga Fasa, Vienna Rectifier, VOC-PI, Total Harmonic distortion, PLECS 4.7.3
PERANCANGAN HYBRID SOLAR HOME SYSTEM MENGGUNAKAN GRID TIE INVERTER Pratama, Renaldi Putra; Zainuri, Akhmad; Nurussa’adah, n/a
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
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Energy is a basic necessity for society in any country, including Indonesia. The rapid population growth in Indonesia has led to an increase in energy usage across various sectors such as agriculture, education, healthcare, transportation, and the economy. The reliance on non-renewable energy is becoming increasingly concerning, necessitating the utilization of renewable energy sources. One of the solutions that can be adopted is the Solar Power Plant or Solar Home System (SHS). This study designs an Automatic Transfer Switch (ATS) for switching between two power sources, PLN and Grid Tie Inverter (GTI), and designs a circuit to enablethe GTI to operate without being connected to the PLN grid. The SHS circuit using a GTI consists of an ATS and a trigger inverter or low-frequency inverter. The ATS uses two DPDT relays with a current capacity of 10A controlled by an Arduino Nano, equipped with a voltage detector, a zero crossing detector, and current and voltage modules. The low-frequency inverter uses a MOSFET switching circuit, a step-up transformer, and a voltage feedback circuit. The results of the study show that when the trigger inverter is active, the GTI is also active, indicated by a green light on the GTI. The switch from PLN to GTI occurs without delay andwithout waveform differences in the load, although there is a slight, insignificant voltage drop with a time interval of 61ms. This study successfully demonstrates that the ATS and GTI system can function as designed to support the availability of renewable energy in Indonesia. Keywords: SHS, Solar power plant, ATS, GTI.
RANCANG BANGUN PROTOTYPE SISTEM MONITORING PENGATURAN SUHU DAN KELEMBAPAN PADA BANGUNAN RUMAH WALET BERBASIS IOT Sidabutar, Aprillius Mawendra; Nurussa’adah, n/a; Asmungi, Gaguk
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
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The walet is a species of bird that provides many health benefits through its nest made of saliva, such as accelerating cellregeneration, strengthening the immune system, and aiding the digestive system. The high selling price of the bird's nest hasprompted many people to cultivate it. Temperature and humidity are important factors in walet cultivation, with the optimaltemperature ranging between 26-29°C and humidity between 80-95%. Bojonegoro district, East Java, is famous for its oil drillingactivity that increases temperature and lowers environmental humidity, making it unsuitable for walet cultivation. Therefore, there is a need for a monitoring system capable of maintaining the temperature and humidity of the walet house at ideal levels. This monitoring system works automatically without human intervention, saving time and effort. The objective of this research is to design and build a prototype temperature and humidity monitoring system based on the Internet of Things (IoT) for walet houses in Bojonegoro District. It is expected that the implementation of this system can significantly improve the quality and quantity of walet nests. Keywords: walet cultivation, temperature and humidity monitoring, Internet of Things (IoT), automatic system.
RANCANG BANGUN SISTEM MONITORING KONSENTRASI CO2, SUHU, DAN KELEMBABAN PADA PROSES BUDIDAYA JAMUR TIRAM BERBASIS INTERNET OF THINGS Marbun, David Yoel; Maulana, Eka; Asmungi, Gaguk
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
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Due to their high nutritional content, oyster mushrooms are a valuable food source with increasing demand. However, increasing oyster mushroom production is challenging because they require specific environmental conditions and cannot grow just anywhere. Therefore, it's crucial to adjust the environmental conditions for optimal oyster mushroom cultivation. Base on the problem, there is a need for a system that can adjust environmental conditions to meet the optimal requirements for oyster mushroom cultivation. Oyster mushrooms typically thrive in highland environments. Several environmental parameters that can influence their growth include CO2 concentration (575-731 ppm), temperature (16˚C to 30˚C), and humidity (80-95%). The designed system is expected to measure these environmental parameters using sensors, include the MQ-135 sensor and the DHT22 sensor.Additionally, actuators will be used to control the environmental parameters and bring them to the desired levels, which is exhaust fan and DC pump. The use of these sensors and actuators will be integrated with an ESP32 microcontroller, which can proces and manage the system. To maximize the quality of the oyster mushrooms, the system will utilize the Internet of Things (IoT), for automated and remote monitoring and control of the oyster mushroom cultivation process through the Blynk application. Keywords: Oyster Mushrooms, ESP32, MQ153, DHT22, Exhaust fan, DC Pump, IoT, Blynk

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