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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 2,116 Documents
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ANALISIS KOMUNIKASI DATA PADA ALAT MONITORING PASIEN RUMAH SAKIT MENGGUNAKAN MODUL LORA 923 MHz Mochammad Mufti Nurmukhlis; Ponco Siwindarto; Rusmi Ambarwati
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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Abstract

LoRa is one of the most popular LPWAN technologies. LoRa technology is suitable for IoT application scenarios that only need to transmit small amounts of data over long distances and transmit data at low power. The tool system for monitoring hospital patients aims to help and speed up medical records of health services, both under normal circumstances and in critical or urgent situations. LoRa functions as a long-range spectrum communication medium to receive data sent from the detector subsistence. This research focuses on testing Heltec's LoRa range at 923MHz frequency. The parameters used are Received Signal Strength Indicator (RSSI) and Packet loss. The RSSI test results will be compared with the RSSI calculated using the normal log shadowing model. Calculations for the free space area with the addition of shadowing effects. Judging from the range of RSSI values at each test point, RSSI is relatively stable. However, based on the average RSSI testing and calculations, RSSI has decreased while packet 2 loss has increased with each additional distance. From this study, the maximum LoRa range is 180 meters. Keywords: LoRa, IoT, RSSI
KLASIFIKASI SINYAL ELEKTROKARDIOGRAM MENGGUNAKAN METODE ARTIFICIAL NEURAL NETWORK SEBAGAI PENDETEKSI FIBRILASI ATRIUM Made Putera Wiguna; Ponco Siwindarto; Erni Yudaningtyas
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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The research currently being developed focuses on the classification of Electrocardiogram (ECG) signals on arrhythmic disorders of the heart rate of the atrial fibrillation type. This monitoring and classification aim to be an early treatment for types of atrial fibrillation arrhythmia disorders. The proposed classification can classify normal patient signals with those of patients with atrial fibrillation using the Artificial Neural Network method with long short-term memory architecture. Data preprocessing techniques on ECG signals before the classification process, namely segmentation, normalization, and feature extraction. The results show that the method used has a very good accuracy value of 94,41%, a sensitivity of 94,52%, and a specificity of 93,74%. Keywords: EKG, Arrhythmia, Atrial Fibrillation, Classification, Artificial Neural Network, Long Short-Term Memory
ANALISIS PERBANDINGAN PENGGUNAAN ANTENA OMNIDIRECTIONAL DAN MIKROSTRIP PADA RECEIVER SISTEM CERDAS MONITORING PASIEN Azzam Rasyiq El-Faraby; Ponco Siwindarto; Muhammad Fauzan Edy Purnomo
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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Abstract

In implementing an IoT-based patient monitoring system, an antenna is needed that is designed to strengthen signal reception. The designed IoT system is a communication of 2 microcontrollers that can transmit important parameters of the patient's condition. The design of the microstrip antenna is integrated into the receiving side of the LoRa 32 V2 SX1276 microcontroller. Thedesign of a microstrip antenna begins with designing and optimizing using the CST 2018 software. The parameters that are the main points are gain, return loss, and axial ratio. Microstrip antenna specifications use an FR-4 substrate with a thickness of 1.6 mm. In addition, this antenna is designed at a frequency of 920-925 MHz, according to the working frequency of the LoRa 32 V2SX1276 microcontroller. Keywords : Antenna, microstrip, lora, CST 2018
PENGGUNAAN SEPIC CONVERTER PADA PENGEREMAN REGENERATIF MOTOR BRUSHLESS DIRECT CURRENT DENGAN SUPERKAPASITOR Rakha Ghilman Fakhruddin Yusuf; Waru Djuriatno; n/a Wijono
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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This research is to explain how to use the SEPIC Converter for regeneratif braking using a supercapacitor and its impact on the BLDC motor regeneratif braking process and the supercapacitor charging process. This research was conducted by simulating a BLDC motor regeneratif braking system with a supercapacitor load on the PSIM software. Tests were carried out by varying the duty cycle value of the MOSFET SEPIC converter with a value between 10% to 80% with binding variabels in the form of motor braking time, braking torque, converter input voltage and current, and converter output voltage and current. The results obtained in this study are, the greater the duty cycle value, the faster the braking of the BLDC motor will be. This is indicated by the braking torque which appears to be getting bigger. In addition, the duty cycle value also affects the working system of the converter, where when duty cycle value below 50% making it work as a buck converter or reducing voltage, and if the duty cycle value is below 50% it will make the converter work as a boost converter or voltage booster. Efficiency converters range from 90.8% to99.9% with a maximum efficiency value of 50% duty cycle, and a minimum efficiency value of 80% duty cycle. The duty cycle value also affects the supercapacitor charging process, where the smaller the duty cycle value makes more energy stored in the supercapacitor, due to the greater current flowing.Keywords : BLDC Motor, Regeneratif Braking, SEPIC converter, supercapacitor.
SISTEM PEMANTAU KESEHATAN UNTUK PASIEN VIA USER DATAGRAM PROTOCOL (UDP) DAN LONG RANGE (LORA) Hendry Rama Sethiawan; Ponco Siwindarto; Muhammad Fauzan Edy Purnomo
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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Recent advances in the Internet of Things (IoT) technology design are spurring the development of intelligent systems to support and enhance healthcare and biomedical-related processes. This study aims to design a health monitoring system for patients through UDP and LoRa and measure heart rate, blood oxygen saturation, ECG signal, and body temperature with a certain method. The methods used include the Photoplethysmogram (PPG) method to measure heart rate and blood oxygen saturation, the infrared reading method to measure body temperature and the 3-lead method to form an Einthoven triangle on the chest to read ECG signals. This system data transmission uses LoRa with a frequency of 923 MHz and Wi-Fi with a frequency of 2.4 GHz that utilizes the User Datagram Protocol (UDP). The results of this study are measurements of each sensor in measuring and sending data via LoRa and Wi-Fi. Keywords: Internet of Things (IoT), heart rate measurement, blood oxygen saturation measurement, ECG signal reading, body temperature measurement, LoRa, User Datagram Protocol (UDP)
KONTROL KUALITAS AIR UNTUK BUDIDAYA IKAN LELE PADA SISTEM TANAM AQUAPONIK Yusuf Rangga Pratomo; n/a Nurussa’adah; Raden Arief Setyawan
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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Abstract

The process of fish farming is a technical activity that requires certain knowledge and expertise, fish farming is also a type of business that is in great demand by the public because it has high profit margins. Aquaponics is a planting method in which plants grow in water. Now, due to the depletion of planting land, people use the method of cultivating fish in aquaponic systems. Often beginners in cultivation encounter problems during the cultivation process due to a lack of knowledge and technical level in handling the problems encountered such as the large number of dead fish and dry or rotten plants. These problems arise due to unsuitable environmental conditions for the growth and development of fish and plants. Therefore, certain control methods are needed so that environmental conditions will always be good for the growth and development of fish and plants or also called ideal cultivation conditions. Control methods will regulate water parameters such as pH, ammonia and temperature to be beneficial during the cultivation process. With the application of this method, ideal conditions will always be maintained, so that problems such as fish seeds that die easily, rotting plant roots, and dry plant leaves can be minimized or even not arise. Keyword: aquaponic, fish cultivation, control method, monitoring, water parameter.
ANALISIS DESAIN PEMASANGAN PLTS ON-GRID DI GBTE UNIVERSITAS BRAWIJAYA: STUDI KELAYAKAN PADA ASPEK TEKNIK DAN EKONOMI Adrian Adam Indrabayu; Rini Nur Hasanah; Lunde Ardhenta
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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Solar energy is energy that comes from the sun and has great potential to be utilized, one of which is to make electricity. In line with the target of a 23% renewable energy mix in Indonesia through the National Energy General Plan (RUEN), solar energy is one of the main renewable energies to be developed through solar panels. This is intended as one of the efforts to reduce Green House Gas (GHG) emissions, achieve energy independence in the future, and form an energy source at an affordable cost. The Electrical Engineering Joint Building of Brawijaya University (GBTE UB) is one of the buildings in the UB campus which will be the object of research in this study. The purpose of this study is to determine the feasibility of installing an on-grid rooftop Solar Power Plant (PLTS). This study was conducted by reviewing the feasibility of installation from two aspects, namely technical and economic aspects. There is several software needed in this study which include: Helioscope, PVSyst 7.2, and ETAP. Helioscope and PVSyst 7.2 are useful in determining the correct type of components and simulating various types of plotting available. Based on the simulation, it was found that 46 Trina Solar TSM-PE14A 320 Wp modules and an inverter with a capacity of 12 kW would give a Performance Ratio (PR) value of 80.7% and a DC/AC ratio of 1.23. The total power produced by PV system is 14,72 kWp and energy produced is more than 18 MWh annually will be supplied to the load at GBTE UB. ETAP 16.0 is used to determine the power distribution in the system. It is noted that the load at GBTE UB uses 15,1 kVA and still needs 8,14 kVA power supply from PLN. Economically, the initial investment required to install a PLTS on-grid is IDR 208,619,628 with a net metering scheme of 1:1. Therefore by this scheme, all surplus energy produced by the PV system might be able to be exported to PLN grid 100%. The simulation shows that the NPV is 256.265.384 IDR, IRR is 19%, PP is 6,45 tahun, and PI is 31,04. Based on the feasibility study, the PLTS system was successfully assessed as feasible to implement as an effort to accelerate renewable energy in Indonesia. Keywords: solar power plant, on-grid, Helioscope, PVSyst 7.2, Economic
SISTEM DETEKSI KEBOCORAN PIPA DAN MONITORING DEBIT AIR MENGGUNAKAN FLOWMETER BERBASIS INTERNET OF THINGS Moh. Wildan Ali Fikri; Raden Arief Setyawan; n/a Nurussa’adah
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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Water is a primary need for humans because of the fulfillment of survival. Water supply is a direct activity from PDAM to the community. Losses that often arise, namely leaks due to broken pipes or pipes that are not tight. leakage information is carried out by the public directly to the officer to check the pipe. Late repairs can result in wasted water. The development of technology in the 4.0 era has had a big impact on society. So, the researchers designed to create a pipe leak detection system and monitor water discharge using an internet of things-based flowsensor. This system uses 3 flowsensors. Flowsensor connected to NodeMCU. NodeMCU is connected to the thingspeak database via a Wi-Fi internet network. Readings by the flowsensor are received by NodeMCU then forwarded to Thingspeak to be displayed on the website page. This research was conducted with the hope of providing more accurate water discharge measurement results in detecting pipe leaks. Keyword: flowsensor, water flow, NodeMCU, leaks
DESAIN KONVERTER SEPIC UNTUK METODE PENGEREMAN REGENERATIF EKSITASI MANDIRI PADA MOTOR INDUKSI 3 FASA SEBAGAI PENGISIAN BATERAI Muhammad Alman Wadi; Waru Djuriatno; Rini Nur Hasanah
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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Today the development of electric vehicles is starting to be widely used compared to fossil fuel vehicles, one example is the electric train. An electric train is a train whose propulsion system is an electric motor. An induction motor is an alternating current (AC) electric motor that operates on the basis of induction of the stator's magnetic field into the stator. Here the motor rotor current causes a magnetic field generated by the rotation of the rotor and the stator current. One of the important parameters contained in the vehicle is braking. The regenerative braking method was used in this study where the rotor of the induction motor rotates faster than the stator rotating field so that negative slip occurs and the machine supplies energy. Thus, we need a device that can increase and decrease the voltage of this energy so that it can be stored in the battery. Therefore, in this study the SEPIC topology converter will be used. SEPIC (Single Ended Primary Inductor Converter) is a type of converter that can work step up or step down by setting the duty cycle on the gate switch. By conducting research on the design of the SEPIC converter as a battery charger using PID control which has a function so that the system achieves the desired response, it is hoped that charging can be carried out whose output can match the battery specifications. In this study, software was used to test the system, namely MATLAB/Simulink with the grid frequency as the independent variable. The test results show that the input from the SEPIC converter has varying values such as the voltage above or below 14V. The output of the SEPIC converter voltage has an error and the battery SoC also varies at each grid frequency that supplies the induction motor with a range of 10 Hz – 100 Hz. Keywords: Regenerative Braking, Three-Phase Induction Motor, SEPIC Converter, PID Control, State of Charge (SoC), MATLAB/Simulink
DESAIN KONVERTER CUK PADA METODE PENGEREMAN REGENERATIF EKSITASI MANDIRI PADA MOTOR INDUKSI 3 FASA Ayatullah Farhan; Waru Djuriatno; Rini Nur Hasanah
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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Abstract

The existence of transportation in Indonesia plays a very important role in facilitating human mobility to move from one place to another. The use of electric vehicles is one of the developments that is currently experiencing a lot of progress, including electric trains (KRL). As the name implies, KRL is sourced from electricity which is supplied to the train system, which is mainly used as a motor drive. When using a motorbike, the important parameter to consider is braking. One type of electric braking that is widelydeveloped is regenerative braking. Self-excitation method regenerative braking using a capacitor is one of the branches of regenerative braking. This type of braking uses motor excitation which will be stored in a capacitor. The resulting regeneration energy will be stored in a battery so that it is not wasted as heat alone, therefore to transfer power a DC-DC converter is needed to adjust the battery voltage. The CUK converter is selected to buck/boost the voltage to match the battery specifications. This research was carried out by simulating using Simulink/MATLAB software which is useful for analyzing the input and output of theconverter and the state of charge (SoC) on the battery. Based on the simulation, it shows that the output of the converter produces a voltage of 13.40 V at a grid frequency of 50 Hz with a SoC increase of 0.006426%. The test was carried out over the grid frequency range of 10-100 Hz which resulted in varying voltage errors and SoC increases.Kata Kunci— Things Three Phase Induction Motor, Regenerative Braking, DC-DC Converter, Capacitor, Frequency, State of Charge (SoC)

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