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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 2: July 2024" : 15 Documents clear
The Influence of Kalman Filtering on the Received Signal Strength Indicator in Multi-node Bluetooth Low Energy Communications Musayyanah Musayyanah; Hendra Daniswara; Pauladie Susanto; Harianto Harianto
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.2355

Abstract

Bluetooth Low Energy (BLE) is one of low power Wireless Personal Area Network (WPAN) Technology. BLE has high data transfer rate at a low range, but implementation of BLE is easier than other WPANs. Distance conversion in wireless communication is a challenge in itself for the accuracy of distance estimation, one of them is the RSSI parameter. The RSSI fluctuating value generated by BLE caused by multipath fading and noise phenomena in observation environment. This article aims to apply the Kalman Filter to fine-tune the RSSI value so that the distance estimation to be precise. Testing was carried out in environment with many obstacles, on a BLE multi-node systems. The test results prove that the Kalman filter can correct the distance estimation error by 27.48\%. In addition, the results of this distance conversion are sent by LoRa communication to be displayed on the website page.
Evaluation of 20 KV Distribution System Using SAIDI and SAIFI Reliability Indices at PT PLN Abdul Muis Prasetia; Linda Sartika; Al Amin Hanifa Muslim
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.2482

Abstract

Currently, power outages in Tarakan City are still frequent, both planned and due to disturbances such as fallen trees, lightning strikes or damage to the distribution equipment itself. PT PLN (Persero) Tarakan continues to make improvements to improve the reliability of the distribution system in Tarakan City using standard values, the reliability index for duration of disturbance (SAIDI) and the number of blackouts (SAIFI) so that the distribution of electrical energy continues to be channeled to customers. SAIDI and SAIFI values will be calculated every month to find out corrective actions against disturbances or damage that occur. Reliability is a benchmark value to see the reliability of the distribution system. The reliability index of SAIDI and SAIFI of PT. PLN (Persero) Tarakan in 2020 was 2.81 hours/plg/month and 2.55 times/plg/month. In 2021, SAIDI and SAIFI received 1.72 hours/plg/month and 2.45 times/plg/month. Based on the reliability index, PT PLN (Persero) Tarakan is categorized as reliable because the SAIDI and SAIFI values obtained do not exceed the existing standard values based on SPLN 68-2: 1986
Evaluation of Electrical Harmonics in Building Installations Rizky Aprylianto Susilo; Fransiskus Sandi Tolanda; Arif Hidayat; Patrik Handriano; Vita Amalia; Besse Ita Basari
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.2590

Abstract

This study aims to determine the level of harmonics, and conduct harmonic analysis on the electrical system in the new Building of the Information Technology Department of Samarinda State Polytechnic. Harmonics are electric waves that have frequencies with multiples of the base frequency of the power source (50 Hz in Indonesia). Harmonics can arise due to the use of electronic equipment that has non-linear load properties. This is becoming a major problem for power quality issues and harmonic analysis is required to scrutinize in component modeling to minimize or eliminate these harmonic disturbances. Based on research that the harmonic content in the new building of the Information Technology Department of Samarinda State Polytechnic has not met the standards. In this case, the power quality in such buildings exceeds the specified standards. The method used is the design of passive filter simulation in distribution transformers using ETAP  software. The result of this study is a decrease in harmonic currents after installing a passive filter with an initial THDi value in phase S of 59.84% for IHDi values in the 5th order of 57.25% the value does not meet IEEE 519-2014 standards, the use of single-tuned passive filters can reduce the THDi content in phase S to 10.94% and the 5th order phase S down to 10.46 already meets IEEE 519 – 2014 standards, namely THDi 15% and IHDi in the 5th order 12% with SCRatio between 100-1000 A.
Impact of Shading on the I-V Characteristics and Power Output of Monocrystalline and Polycrystalline Solar Panels Andyka Lesmana; Belly Yan Dewantara; Iradiratu Diah Prahmna K.
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.2830

Abstract

Solar panel is a tool composed of several solar cells assembled in series or parallel by utilizing the photovoltaic effect so that it can convert solar energy into electrical energy. Solar panels have several types, namely monocrystalline and polycrystalline where each type of solar panel has different absorption efficiency based on the constituent materials. According to several surveys, obstacles that often occur in the field in the installation of solar panels are due to external influences which include influences (shading, soiling, and spot) so that it has an impact on the performance of solar panels which results in power instability due to non-linear current-voltage (I-V) relationships. This study tested the power output of monocrystalline and pollycrystalline 100 Wp solar panels with several levels of shading testing The results of testing research data that have been carried out show that there is an influence of shading on current and voltage, resulting in a decrease in output power. It was found that the partial and overall shading effects caused a decrease in power by -71% and -75% respectively from the normal conditions of monocrystalline solar panels. Polycrystalline solar panel testing due to partial shading effect of -75\% and total shading of -77\% of normal solar panel output power without conditioning.
Analysis of Second-Order HPF and LPF Circuit Simulations as Digital Signal Amplification Filters Pascal Siregar; Florentius Budi Setiawan; Paskal Kariman; Leonardus Heru Pratomo; Slamet Riyadi
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.2954

Abstract

The writing of this paper focuses on describing and relating simple modeling and analysis to the simulation of High-PassFilter (HPF) and Lowpass filter (LPF) designs using Op-Amp, which previously used an analog system and then converted into a digital system using input and output digital gain processing frequency which aims to strengthen the sinusoidal signal contained in the HPF and LPF systems. Filter is defined as an electrical network that is designed to pass alternating current that is increased at a predetermined frequency and blocks all alternating current that is increased at a predetermined frequency. Frequency also has types, namely analog, digital, active and passive. Analog filters are used for analog signals, digital are used for signals using digital techniques, passive filters such as resistors, capacitors, inductors, and active such as transistors or op-amps. In general, the understanding of HPF is that it passes high frequencies at the cut-off frequency and dampens low frequencies. Furthermore, LPF also has different characteristics, namely, passing low frequencies and dampening high frequencies. Currently related to digital signal processing, it can be said to be a method of manipulating, analyzing and interpreting signals, which is used to process the removal of noise or interference on several unwanted components of the signal. By knowing these characteristics, what the author did was carry out a simulation aimed at helping to obtain optimal frequency output.
Implementation of SLAM Gmapping and Extended Kalman Filter for Security Robot Navigation System Riza Agung Firmansyah; Yuliyanto Agung Prabowo; Titiek Suheta; Afri Nanda Dwi Utomo
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.3104

Abstract

Robot Security is a robot that is responsible for security as well as patrolling. When patrol automatically, the robot requires a navigation system. The robot also needs a mapping system that is used to make a map of the environment and as information on its location according to the map. The sensors used are wheel odometry and LiDAR. The wheel odometry system often slips which causes errors in reading the actual position of the robot. To fix this problem, a sensor fusion between the Inertial Measurement Unit (IMU) and wheel odometry is used. To combine these sensors, namely using the Extend Kalman Filter (EKF) which runs on the Robot Operating System (ROS) operating system. Mapping and navigation system testing, carried out using IMU sensors and without IMU, towards the 5 target points that have been made. In the test without IMU, the error of the robot reaching the target was (x = 45.86%, y = 54.595%, and = 56.63%). After adding the IMU sensor, the robot error has decreased to (x = 2.02%, y = 1.796%, and = 0.22%). In conclusion, the data combined from the IMU sensor and wheel odometry could minimize the existing slip errors.
Implementation of Coordinated Auto-Pairing Design in Wireless Sensor Networks Using Gateway-to-Node Handshake Method Nur Rohman Rosyid; Ronald Adrian; Waffiyah Amalyris; Dzulfikar; Alif Subardono
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.3199

Abstract

In the current and future era of automation, the widespread utilization of Wireless Sensor Network (WSN) technology becomes essential. The ease of installation, configuration, and management of WSN system devices involving sensor nodes is a crucial factor in the effective utilization of this system. The way sensor nodes connect to the gateway/controller in a large and widespread WSN system is a pivotal point. The experimentation in this research has successfully developed a coordinated auto-pairing protocol between the controller/gateway and sensor nodes using a handshake method approach. The results of the coordinated auto-pairing process between the controller and nodes indicate an average time of 435ms per node and a data transmission accuracy of 97%.
Design and Development of a Fuzzy Logic-Based Temperature and Humidity Control System for Cricket Breeding Enclosures Nanda Rizky Hamala; Sumadi
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.3263

Abstract

Cicadas are insects that can be cultivated in Indonesia. The most common species of cicadas cultivated in Indonesia are Gryllus bimaculatus and Acheta domesticus. Cicadas are commonly used as livestock feed, including ornamental chickens, poultry, and birds, because of their high protein content. Cicadas cultivation in Indonesia is still mostly done manually, both in the process of controlling the environmental conditions around the cage and in the process of breeding cicadas eggs. One of the problems that often occurs is the temperature and humidity in the cicadas cage are not stable. Therefore, this research aims to design a system that can control the temperature and humidity in the cicadas cage. This system applies the fuzzy logic method to control actuators that can regulate the duration of spraying and the level of lighting needed in the cicadas cage based on the fuzzy rules that have been made. The components used in this system include Arduino uno, DHT22 sensor, relay, AC light dimmer, mist maker, lamp, and fan. The results of this research show that the temperature and humidity control system in a cicadas cage using fuzzy logic method with a predetermined setpoint has been realized. The accuracy testing of the DHT22 sensor obtained an error of 1.55% and a temperature accuracy rate of 98.44% and humidity of 1.66% with an accuracy rate of 97.64%. Then, the testing of the comparison results on the system and fuzzy simulation with the matlab application obtained an accuracy percentage in the mist maker testing of 97.37% and in the lamp testing of 98.81%.
Design and Development of a Smart Café System Utilizing IoT for Real-Time Remote Monitoring and Updates Yuli Kurnia Ningsih; Fuanisa Bonita
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.3276

Abstract

Currently, cafés are a popular place for community activity. In addition to enjoying drinks and food, the café is also a place that is used as a place for discussions, for learning/study and a meeting point for various groups, including students. A good café is one with comfortable and safe conditions. One way to ensure the comfort of café is to monitor and control the body temperature, air quality,room temperature and humidity, the number of visitors, cleanliness and the temperature in the kitchen. This research, an IoT based monitoring and control tools was developed. The goal of this tool is to monitor and control café conditions automatically real time and touchless. The sensors used collect data and read the conditions of parameters to be evaluated. Among the evaluations performed by this tool are the number of visitors (dine-in or take-away), control of temperature & humidity in the café, attendance tag cards for employees and cafe security, compliance with health protocols before entering the cafe, and measurement of a person's body temperature using infrared. In addition, if there is an anomaly in the café (temperature exceedance), the manager receives a notification in real time of what is going on in the café. Cooling fans and humidifiers are activated when the air quality is abnormal, that is, when the temperature is more than 33°C and the humidity is not 45% - 65% Relative Humidity. When the temperature in the kitchen is more than 38°C, the alarm is activated
Design and Development of a Wireless Energy Meter with Automatic Cos phi Corrector Feature Based on Internet of Things Fakih Irsyadi; Rafifnanda Hastomo; Suhono
Emitor: Jurnal Teknik Elektro Vol 24, No 2: July 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i2.3329

Abstract

The increasing need for energy efficiency and more accurate monitoring of energy consumption has driven the development of intelligent energy metering systems. This Final Project discusses the development of Wireless Energy Meter that integrates sensor technology and data analysis for better monitoring and prediction of energy consumption. The main objective of this research is to improve understanding of household energy consumption patterns and develop power factor improvement algorithms that can provide better use of energy efficiency in the future. At the first stage, the system is implemented using energy sensors connected to the household electrical network. The data obtained from this sensor is sent to the Thingspeak application for later monitoring. The second stage involves developing an algorithm to automatically correct the power factor that the capacitor will later embed to correct cos phi if the existing power factor is less than a predetermined set point. The results of this study show that the system that has been developed is able to provide real-time monitoring of energy consumption and improve electricity quality for better energy efficiency in the future. This can help users to be more efficient in energy use, identify potential savings, and reduce environmental impact. In addition, this system can be used by equipment in households whose purpose is to optimize the use of daily electricity loads.

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