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Progam Studi Teknik Elektro, Fakultas Teknik Universitas Muhammadiyah Surakarta Jl. Ahmad Yani, Pabelan, Kartasura, Surakarta 57162 Telp: 0271-717417 Ext.: 3223
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Emitor: Jurnal Teknik Elektro
Published by Universitas Muhammadiyah Surakarta
ISSN : 14118890     EISSN : 25414518     DOI : https://doi.org/10.23917/emitor
Core Subject : Engineering,
Engineering
Emitor: Jurnal Teknik Elektro merupakan jurnal ilmiah yang diterbitkan oleh Jurusan Teknik Elektro Fakultas Teknik Universitas Muhammadiyah Surakarta dengan tujuan sebagai media publikasi ilmiah di bidang ke-teknik elektro-an yang meliputi bidang Sistem Tenaga Listrik (STL), Sistem Isyarat dan Elektronika (SIE) yang meliputi Elektronika, Telekomunikasi, Komputasi, Kontrol, Instrumentasi, Elektronika Medis (biomedika) dan Sistem Komputer dan Informatika (SKI).
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 15 Documents
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Search results for , issue "Vol 24, No 3: November 2024" : 15 Documents clear
Combining Microstrip Meander Line and Dipole Antennas: Dual-Band Solution for PIR Equipment Muhamad Adimukti Prasojo; Muh Wildan; Eriyandi; Wibowo, Priyo
Emitor: Jurnal Teknik Elektro Vol 24, No 3: November 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i3.6381

Abstract

One of the aviation navigation tools is the Instrument Landing System (ILS), which functions to provide guidance signals to aircraft in the final approach position toward the runway. The ILS consists of three components: the Localizer, Glide Path, and Marker Beacon. To ensure aviation safety and security, navigation equipment must be regularly inspected through Ground Inspection. With current technological advancements, Ground Inspection is being conducted using UAVs or drones. One of the components to be installed on the UAV is the PIR, which requires two antennas of different lengths to receive signals from the Localizer and Glide Path.In this study, a dual-band antenna was developed that combines a dipole antenna and a meander line microstrip antenna for frequencies 108-112 MHz and 328.6-335.4 MHz, using CST Studio Suite 2021 software and FR-4 substrate material. Simulation results showed good performance with a return loss value of -19.43471 dB, VSWR of 1.238951, and a bandwidth of 2 MHz at a frequency of 110.5 MHz, and a return loss value of -27.41626 dB, VSWR of 1.119686, and a bandwidth of 2.5 MHz at a frequency of 329.6 MHz.Measurement parameter values for the VHF band were a return loss of -14.1680 dB, VSWR of 1.487, and a bandwidth of 14.6 MHz. Meanwhile, for the UHF band, there was a shift in the resonance frequency to 368.5 MHz with a return loss value of -15.4202 dB, VSWR of 1.408, and a bandwidth of 11.4 MHz. In this antenna design, a dual-band combination of a dipole and a meander line microstrip antenna with dimensions of 320 mm was achieved, capable of operating in both the VHF and UHF frequency bands simultaneously. However, this antenna can only operate at the Localizer working frequency.
Baby Room Temperature and Humidity Control System Using Fuzzy Logic Arifuddin, Rahman; Dirgantara, Wahyu; Sumarahinsih, Andrijani; Putri Intan Hafsari1, Rizky; Iqbal Maulana, Fairuz; Trisna Nugraha, Anggara; Arya Sobhita, Rama
Emitor: Jurnal Teknik Elektro Vol 24, No 3: November 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i3.6403

Abstract

The health and comfort of infants are highly sensitive to room environmental factors, particularly temperature and humidity, which play a critical role in supporting their well-being. Managing these factors becomes complex due to constant fluctuations in ambient conditions, necessitating the use of advanced technology to ensure stability and adaptability. This study explores the application of fuzzy logic in designing a temperature and humidity control system for infant rooms, aiming to maintain an optimal environment for infant care. Fuzzy logic offers a robust approach for handling variability, enabling precise adjustments based on a set of predefined rules and inputs. The system operates by processing real-time input values of temperature and humidity and producing adaptive responses through control outputs, such as cooler, heater, and blower settings. These adjustments are determined by a series of if-then rules that interpret the input conditions to produce the necessary responses. Experimental testing and evaluation confirm that the fuzzy logic-based control system effectively maintains room temperature and humidity within the desired range. The results indicate that this approach can successfully sustain a stable and comfortable environment, underscoring its potential application in enhancing infant health and comfort through controlled indoor climate conditions.
High Frequency Inverter with Fuzzy Logic Controller for Portable Induction Heater Ummah, Karunia Vio Nita Rusyatul; Eviningsih, Rachma Prilian; Windarko, Novie Ayub
Emitor: Jurnal Teknik Elektro Vol 24, No 3: November 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i3.6651

Abstract

The development of technology today makes humans strive to save natural resources and switch to alternative energy. For reasons of saving energy, saving costs, easy to use, and having a high level of safety, induction heaters can be used as an alternative to overcome these problems. Induction heaters can generate heat through the process of electromagnetic induction when cookware made of metal is brought closer. In this process the coil is supplied with alternating electric current from a high frequency inverter which then induces the cookware with metal material to cause heat. The heat in the induction heater will be regulated through the switching frequency of the high-frequency inverter which gets its voltage source from a 24V battery and increases the voltage to 48V. This induction heater is designed to maintain the setpoint temperature 70°C and 100°C using fuzzy logic control. From the test results it can be seen that the fuzzy logic control can reach a setpoint temperature of 70°C within 20 minutes and after being disturbed the fuzzy logic control can maintain the setpoint temperature with an error percentage of around 0.14% - 0.29%. Meanwhile, the setpoint temperature of 100°C can be achieved within 35 minutes and after being disturbed the fuzzy logic control can maintain the setpoint temperature with an error percentage of around 0.14% -0.9%.
Static Magnetic Field Meter Using Rotating Search Coil Method Rustamaji, Rustamaji; Sawitri, Kania
Emitor: Jurnal Teknik Elektro Vol 24, No 3: November 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i3.6678

Abstract

Abstract Static magnetic fields always exist the environment around us; besides being useful there are also negative impacts on humans, therefore it is necessary to have a tool to measure static magnetic fields. The purpose of this research is to produce a static magnetic field meter that can measure weak magnetic field. In this research, the design and realization of a static magnetic field meter using rotating search coil method is carried out, including: search coil, instrumentation and calibration amplifier, and display. Based on the results of measurements and tests that have been carried out, a static magnetic field meter with a coil area A = m2 and the number of turns N = 14 at a certain angular frequency (ω), can detect and measure a fairly small static magnetic field density (B) from various sources, for stable conditions: in the laboratory without any source of magnetic field can detect B = 2.127 to 2.375 mT, and with magnetic source (circular can detect B = 7.422 to 8.194 mT, neodymium can detect B = 11.03 to 11.84 mT, and smartphone X can detect B = 10.37 to 11.78 mT). Overall the device can work to detect and measure weak static magnetic fields with good measurement stability as seen from the relationship curve between supply voltage and the DC motor rotation which is linear, and measurement sensitivity up to B = 2.127 mT.
Koi Fish Pond Monitoring System Using IoT Sukarno, Setyawan Ajie; Maulana, Gun Gun; Andrea, Ferdyan
Emitor: Jurnal Teknik Elektro Vol 24, No 3: November 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i3.6732

Abstract

The process of collecting water parameter data for koi fish ponds is still done manually. Each parameter from the manually collected samples is tested one by one. This process is inefficient and can cause delays in decisionmaking for koi fish farmers. If the manual testing reveals results that exceed the ideal threshold, it can have a negative impact on the fish. To address this issue, a koi fish pond water parameter monitoring system was designed using an automated method based on the Internet of Things. The sensors used in this study include an ultrasonic sensor, turbidity sensor, Total Dissolved Solids (TDS) sensor, and pH sensor. Based on the test results, when the values of the turbidity and TDS sensors exceed the set parameter limits of 40 NTU and 400 PPM, respectively, the system will activate the draining pump until the water level reaches the lower limit (10 cm), after which the filling pump will activate until the upper water level limit (18 cm) is reached. If the pH sensor value is below the lower limit set in the parameter, the system will activate the alkaline liquid pump to neutralize the pH to a value of 7. Conversely, if the pH sensor value exceeds the upper limit set in the parameter, the system will activate the acidic liquid pump to neutralize the pH back to 7. This automatic draining and filling system will stop working when the turbidity, TDS, and water level values fall within the parameters set in Blynk. The system also maintains the pond's water level at the upper limit set in the parameters.

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