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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) IAES International Journal of Artificial Intelligence (IJ-AI) Transmisi: Jurnal Ilmiah Teknik Elektro Elkom: Jurnal Elektronika dan Komputer TELKOMNIKA (Telecommunication Computing Electronics and Control) Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Journal of Telematics and Informatics Jurnal Teknologi Elektro Proceeding of the Electrical Engineering Computer Science and Informatics CYCLOTRON Infotekmesin Indonesian Journal of Electrical Engineering and Computer Science Electrices : Jurnal Otomasi Kelistrikan dan Energi Terbarukan International Journal of Advanced Health Science and Technology Prosiding Seminar Riset Mahasiswa Jurnal Ilmiah Sultan Agung International Journal of Advances in Artificial Intelligence and Machine Learning
Arief Marwanto
Universitas Islam Sultan Agung
Religion Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Law, Crime, Criminology & Criminal Justice Mechanical Engineering Nursing Public Health

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Optimization of ground plane antenna gain by increasing the inductance of loading coil based on silver material Suyanta Suyanta; Arief Marwanto; Suryani Alifah
Indonesian Journal of Electrical Engineering and Computer Science Vol 27, No 3: September 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v27.i3.pp1438-1451

Abstract

To overcome the attenuation due to signal distortion in the telex model antenna transmitter, the copper and silver coil loading materials for gain have been tested. The parameters include standing wave ratio (SWR) value≈1, the antenna impedance (ZL), return loss (RL), reflection coefficient (ρ) which measured the bandwidth (BW) and quality factor (Q). In this experiment a telex model ground antenna is used, a coaxial feeder cable with 50 Ω and an operating frequency of 144.280 MHz was used. The feeder cable is tuned to approximate pure resistive with minimum impedance to reach maximum resonance frequency. The field strength effective radiated power (ERP) is measure based on 4 measurement points which has different distances within 100 km areas. The results show that the antenna based on copper loading coil (CLC) has a bandwidth is BW=5.166 MHz and Q=27.929, moreover, the silver loading coil (SLC) antenna the bandwidth is BW=4.500 MHz and Q=32.062. Therefore, SLC material could provide a good reduction in attenuation of signal distortion when signal radiation occurs from the antenna to the air.
Enhancement Drip Dose Infusion Accuracy Based on Optocoupler and Microcontroller Sensor Yudistira Marsya Puvindra; Arief Marwanto; Eka Nuryanto Budisusila; Vugar Abdullayev
International Journal of Advanced Health Science and Technology Vol. 2 No. 4 (2022): August
Publisher : Forum Ilmiah Teknologi dan Ilmu Kesehatan (FORITIKES)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35882/ijahst.v2i4.135

Abstract

Setting the speed of infusion drops in a manual manner is by adjusting the clamp on the infusion set, where the nurse must count the number of infusion drops in the chamber at the same time as looking at the time on the watch. This makes the setting is subjective and cannot be shown with numbers. In addition, nurses cannot monitor the infusion rate continuously. Therefore, it is necessary to enhancement the accuracy of giving infusion drops so that they can be objective and can be shown with numbers and monitor continuously. This enhancement in accuracy is done by making a instrument with an optocoupler to detect infusion drops. For processing uses an arduino microcontroller to be the speed and the volume of infusion and detects changes in the rate of infusion drops significantly. And for the display uses a OLED display and a buzzer as an indicator. The results of this instrument, it can be seen that the optocoupler can detect infusion drops in the infusion set properly. This good sensor reading has implications for accurate readings of the infusion drop rate and infusion drop volume. This enhancement in accuracy is not only for the macro drip (20 drops/cc) but also for the micro drip (60 drops/cc). The accuracy of volume readings ranges from 95-99% for the macro drip and 94.5-97% with the micro drip. And for speed accuracy ranges from 92.37-98.46%. Based from the results of this test, enhancement the accuracy of the infusion drip dose administration can be done by making a patient infusion drip dose calculator. This equipment uses an optocoupler sensor, arduino microcontroller, OLED display and buzzer. With the use of this instrument, nurses can be more accurate in regulating the rate of infusion drops given to patients and can monitor it continuously if there is a significant change in infusion rate.
PERANCANGAN SENSOR KADAR OKSIGEN UNTUK IDENTIFIKASI PENDERITA STROKE DENGAN METODE NON INVASIVE Brama Sakti Handoko; Suryani Alifah; Arief Marwanto
Elkom : Jurnal Elektronika dan Komputer Vol 15 No 2 (2022): Desember : Jurnal Elektronika dan Komputer
Publisher : STEKOM PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/elkom.v15i2.946

Abstract

Stroke is the number one cause of disability and the second cause of death in the world. Blood flow that is not smooth in stroke patients causes hemodynamic disorders including changes in the value of oxygen saturation in the blood (SpO2) which can interfere with the function of internal organs including the heart due to lack of oxygen intake. So we need a system to monitor the oxygen saturation value which can be used as an early indicator in recognizing stroke patients. This system uses detection of two sensors to measure oxygen saturation in the blood, a microcontroller to process data, a monitor to display data, a buzzer as a warning of the lower limit of measurement and a micro sd card module to store measurement data that has been running. Parameters displayed include the date of measurement, patient ID, SpO2-1, SpO2-2, last SpO2-1 and last SpO2-2. This system will measure and display the SpO2 value of both right and left arms simultaneously. Stroke patients who experience muscle weakness in one hand may experience different values with a hand that does not experience muscle weakness. This study aims to develop an SpO2 monitoring system that will be used to detect stroke patients with non-invasive methods. The results show that the system has been developed and can be used to measure the patient's SpO2 from both hands simultaneously with a measurement error rate of ±2% for each sensor from standard medical equipment.
OPTIMASI DAYA LISTRIK TURBIN ANGIN JALAN RAYA DENGAN MENGGUNAKAN FUZZY LOGIC Muhammad ‘Atiq; Muhamad Haddin; Arief Marwanto
Prosiding Seminar Riset Mahasiswa Vol 1, No 1: Maret 2023
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini membahas tentang optimasi daya turbin angin jalan raya. Model ditetapkan sebagai pembangkit listrik tenaga bayu di jalan raya dengan parameter yang ditentukan meliputi: dimensi turbin, rasio gear dan kecepatan angin. Fuzzy digunakan untuk mensimulasikan turbin angin jalan raya sehingga didapatkan daya yang dihasilkan. Hasil menunjukan bahwa dengan dimensi blade 20 cm serta rasio gear 28 dengan kecepatan angin 3 m/s pada analisis matlab hasil 3,67 watt sedangkan pada analisis perhitungan manual 3,75 watt dengan nilai mean squared error (MSE) adalah 0,0064 watt. Untuk dimensi blade 20 cm serta rasio gear 60 dengan kecepatan angin 3 m/s pada analisis matlab hasil 6,417 watt sedangkan pada analisis perhitungan manual 7,13 dengan nilai mean squared error (MSE) adalah 0,9. Karena pembangkit listrik yang dihasilkan paling rendah, turbin angin jalan raya tidak direkomendasikan dipasang di jalan raya Indonesia.Keyword: Turbin Angin, Rasio Gear, Kecepatan Angin, Fuzzy Logic.
Smart System Side Slip Tester Results Accuracy Improvement Using Exponential Filter Arief Marwanto; Riky Maulana Firdaus; Muhammad Qomaruddin; Deshinta Arrova Dewi; Tri Basuki Kurniawan; Imam Much Ibnu Subroto
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 11, No 2: June 2023
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v11i2.3576

Abstract

According to Article 6, Paragraph 1, of Law No. 55 of 2012 Concerning Cars, cars that are not roadworthy are particularly harmful for the safety of passengers and other road users. The front wheel ring, which has a significant impact on the safety of the motorized vehicle, is one of the technical requirements for roadworthiness. The front wheel pins make sure the car can go straight, which is related to the steering system's safety and has an impact on fuel economy. Through routine testing at the motor vehicle testing facility owned by the Transportation Service, the front wheel valve examination is performed using a front wheel blade test tool known as the Side Slip Tester. Previously, a lot of the automobile test equipment used at various test facilities was impractical and inaccurate. The construction of a smart system for evaluating wheel blades on cars is covered in this study, along with the implementation of an exponential filter to improve and lower the noise in sensor readings of ADC signals. By comparing the readings of the manufactured tool with a calibrated dial indicator, tests and calibrations are performed. The graph shows that the response to the input signal is quick and excellent for noise filtering, so based on the results of the exponential filter test, 0.2 is the ideal weight for the ADC reading filter. The 9 mm side slip bench shear test yields a maximum error result of 3% following tool calibration.
Valve control system on a venturi to control FiO2 a portable ventilator with fuzzy logic method based on microcontroller Hadi Pranoto; Arief Marwanto; Suryani Alifah; Lukman Abdul Fatah
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 12, No 4: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijai.v12.i4.pp1593-1602

Abstract

The results of several studies for portable ventilators state that it is difficult toregulate oxygen levels of fraction of inspired oxygen (FiO2) that are inaccordance with what is needed directly during the implementation of oxygentherapy. Some portable ventilators cannot set the FiO2, so the ventilators workwith a fixed FiO2. To overcome this problem, medical oxygen with a level of100% is lowered by mixing with free air with an oxygen content of about 40%.Mixing is carried out using a venturi with a large/wide hole that can beadjusted using a slated disk rotated by a direct current motor. The rotationcontrol method uses Mamdani's fuzzy logic. The results of clinically lab-scaletesting show that the fuzzy logic control system is able to control the averageerror pressure of 10.3%, better when compared to the on-off control method,which is 14.5%. The fuzzy logic method is able to increase the accuracy ofFiO2 on a portable ventilator.
PERANCANGAN SENSOR KADAR OKSIGEN UNTUK IDENTIFIKASI PENDERITA STROKE DENGAN METODE NON INVASIVE Brama Sakti Handoko; Suryani Alifah; Arief Marwanto
Elkom : Jurnal Elektronika dan Komputer Vol 15 No 2 (2022): Desember : Jurnal Elektronika dan Komputer
Publisher : STEKOM PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/elkom.v15i2.946

Abstract

Stroke is the number one cause of disability and the second cause of death in the world. Blood flow that is not smooth in stroke patients causes hemodynamic disorders including changes in the value of oxygen saturation in the blood (SpO2) which can interfere with the function of internal organs including the heart due to lack of oxygen intake. So we need a system to monitor the oxygen saturation value which can be used as an early indicator in recognizing stroke patients. This system uses detection of two sensors to measure oxygen saturation in the blood, a microcontroller to process data, a monitor to display data, a buzzer as a warning of the lower limit of measurement and a micro sd card module to store measurement data that has been running. Parameters displayed include the date of measurement, patient ID, SpO2-1, SpO2-2, last SpO2-1 and last SpO2-2. This system will measure and display the SpO2 value of both right and left arms simultaneously. Stroke patients who experience muscle weakness in one hand may experience different values with a hand that does not experience muscle weakness. This study aims to develop an SpO2 monitoring system that will be used to detect stroke patients with non-invasive methods. The results show that the system has been developed and can be used to measure the patient's SpO2 from both hands simultaneously with a measurement error rate of ±2% for each sensor from standard medical equipment.
Sistem Kendali Closed Loop Pada Mesin Extruder Straw Berbasis Logika Fuzzy Sucipto, Dany; Qomaruddin, Muhammad; Marwanto, Arief
Jurnal Teknologi Elektro Vol 15, No 1 (2024)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2024.v15i1.001

Abstract

Akibat panas yang berlebihan pada heater, heater  mati atau panas terlalu tinggi, tetapi motor DC pada extruder tetap berjalan dan mengeluarkan resin, sehingga hasil produksi tidak sesuai dengan desain. Sehingga diperlukan sebuah methoda untuk pengendalian mesin extruder agar produksi dapat berjalan dengan baik. Penelitian dilakukan dengan mengontrol parameter operasional seperti suhu, kecepatan ekstrusi pada mesin. implementasi sistem kendali closed-loop yang mampu beradaptasi dengan perubahan dalam proses ekstrusi. Sistem ini secara otomatis mengontrol parameter operasional berdasarkan umpan balik yang diterima dari keluaran produksi. Pengujian awal menunjukkan bahwa sistem kendali ini memiliki potensi untuk meningkatkan efisiensi produksi dan menghasilkan sedotan plastik dengan kualitas yang lebih stabil. Metode logika fuzzy digunakan untuk mengatasi variabilitas dalam bahan baku dan perubahan kondisi operasional, sehingga menghasilkan hasil produksi yang lebih konsisten dan berkualitas baik. Logika fuzzy yang digunakan dalam sistem kendali closed-loop mesin extruder straw menghasilkan dampak positif dalam mengatasi variabilitas produksi.  Hasil percobaan menunjukkan bahwa methoda closed loop dan fuzzy logic yang diimplementasikan pada mesin extruder ini dapat mengatasi kerusakkan produksi dengan nilai defuzifikasi 6,8 dengan nilai sedang. Sehingga kendali closed-loop dapat bekerja didua kondisi yaitu panas sedang dan tinggi. Kata kunci : Mesin extruders, kendali close loop, Logika Fuzzy
Analisis Pengaruh Incoming Support Cable Berbahan Ferro Magnetic Terhadap Healthy Index Cable Medium Voltage Transformator I 150/20KV 60 MVA Gardu Induk Marwanto, Arief
CYCLOTRON Vol 8 No 01 (2025): CYCLOTRON
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/cl.v8i01.25464

Abstract

Penggunaan material ferromagnetik pada support kabel incoming untuk kabel power tegangan menengah sisi sekunder transformator 150/20 kV GI Jatibarang memiliki peran penting secara mekanis dalam menunjang keamanan elektris panel cubicle incoming. Metode penelitian yang digunakan melibatkan pengukuran lapangan untuk mendeteksi temuan yang disebabkan oleh pemasangan support kabel serta analisis untuk mengevaluasi hubungan antara anomali hasil pengujian tersebut dengan degradasi kabel. Selain itu, perhitungan secara manual dan membandingkan hasil pengujian sebagai landasan utama kalkulasi seberapa besar pengaruh terhadap healty index kabel power tegangan menengah. Data serta hasil perhitungan manual yang diperoleh dianalisis untuk mengidentifikasi faktor-faktor yang memengaruhi kerusakan isolasi kabel dan proses penuaan material. Hasil penelitian menunjukkan bahwa medan elektromagnetik yang dihasilkan kabel pendukung berbahan ferromagnetik secara signifikan mempercepat penurunan healthy index kabel. Penelitian ini berkontribusi dalam peningkatan sistem transmisi serta distribusi energi listrik yang andal. Temuan ini merekomendasikan penggunaan material alternatif atau metode instalasi tertentu untuk mengurangi dampak penurunan kualitas isolasi terhadap kabel. Dengan hasil penelitian ini dapat dijadikan rujukan serta optimasi desain instalasi kabel power tegangan menengah transformator daya 150/20 kV untuk meningkatkan keandalan dan efisiensi sistem transmisi listrik.
Benchmarking of OFDM Spectrum Exchange for Mobile Cognitive Radio Networks Marwanto, Arief; Kamilah, Sharifah; Satria, M. Haikal
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 13, No 2: June 2025
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v13i2.4094

Abstract

The local spectrum sensing objective in spectrum sensing is to detect the PU's signal. The sensing node's (SN) capacity to detect the PU's signal is of paramount importance. However, it is presumed to be stationary in the majority of SN in cognitive radio networks. The detection performance on local observation is significantly influenced by the mobility of the PUs and SNs. The SNs' movement generates spatial diversity in the PU's signal observation. The signal's condition would fluctuate during the sensing process as a result of Doppler effect, spatial distance, velocity, movement, and geolocation information. Therefore, a benchmark is required to compare the primary user signal detection level of stationary and moving SNs from each sensing node. The performance results have demonstrated that static nodes with SCM are superior to conventional subcarrier mapping (SCM) methods in the case of a subcarrier mapping width of α = 2. Additionally, the quantization width is uniform. It has been determined that the performance disparity is substantial, ranging from 2 dB to 4 dB. The results indicate that the static nodes SCM have achieved acceptable performance detection at a low subcarrier detection threshold (SDT) value of 0 dB up to 5 dB. Conversely, the probability of conventional SCM detection is less than 1 of probability detection (PD) value at the same low SDT value. The detection probability (PD) of static nodes with SCM is satisfactory at an SDT value of 15 dB. Moreover, the probability begins to decline until 20 dB at an SDT value of 11.5 dB, a substantial decrease that is rendered negligible. In contrast to the new subcarrier mapping (N-SCM) method, which has a false alarm probability (PFA) of approximately 0 dB to 9.5 dB, conventional subcarrier mapping (SCM) has a high false alarm probability in mobility networks. Furthermore, it is evident that the PFA curves for the conventional SCM method are lower than those of other methods at low speeds, as they approach the null value at SDT 7.5 dB. The PFA curve for both methods is higher than other velocities by attaining a null value at 10 dB, in contrast to high velocity. In general, the mobility parameter has the potential to meet the detection performance and perform well in the false alarm probability of mobile spectrum exchange. Consequently, it could be employed to provide information on spectrum exchange in the future.
Co-Authors A. M. Harb, Hani Abo-Taleb, Ahmed Agung Satrio Nugroho agus sukarno Agus Suprajitno Agus Suprajitno Ahmed Abo-Taleb Ahmed S. Samra Ahsraf Ashraf Khalil Amir, Afandi Andrianto, Dian Andri Arinan Putra Aser Anou Asri, Mohd Hafizulhadi Mohd Bakhtiar Indra Kurniawan Berkah Fajar Tamtomo kiono Brama Sakti Handoko Brama Sakti Handoko Daniel Triswahyudi Dedi Nugroho Dedy Syamsuar Deshinta Arrova Dewi Diah Arie WK Eka Nuryanto Budi Susila fajar pujiyanto Fitri Anindyahadi Gunawan Alim Habib ALzaroug Abobaker Wardeko Hadi Pranoto Haikal Satria, Muhammad Hani A. M. Harb Hapsari, Jenny Putri I Nyoman Gede Muliawan Imam Much Ibnu Subroto Iska Yanuartanti Iwan Setiawan Jawarneh, Malik Jenny Putri Hapsari Kamilah Syed Yusof, Sharifah Kamilah, Sharifah khaled jemah basher Khalifa Mansour Khalifa Kuat Supriyadi Laksamana Rajendra Haidar Lawrence Adi Supriyono Lukman Abdul Fatah M Satria M. Gaballah, Waleed M. Haider Abu Yazid M. Haikal Satria M. Haikal Satria M. Ulin Nuha Maivi Kusnandar Mohamad Habib Ahsan Mohammad Alfian Mudzakir Mohd Hafizulhadi Mohd Asri Muhamad Haddin Muhammad ‘Atiq Muhammad Haikal Satria Muhammad Haikal Satria Muhammad Haikal Satria Muhammad Qomaruddin Muhammad Qomaruddin Muhammad Qomaruddin Muhammad Rifai Rifai Munaf Ismail Munaf Ismail Mustaqim Musyahar, Ghoni Nashruddin Anwar Nuha, M. Ulin Praditya, Muhammad Irfan Nur Pramono Mukti Wibowo Putra, Arinan Qirom Qirom Renantivani, Alivia Reza Yoga Diputra Riky Maulana Firdaus S Sukiran S. Kamilah S. Y S. Kamilah S. Y, S. Kamilah S. Y S. Samra, Ahmed Sarman Sarman Sarman Sarman Sarman, Sarman Satria, M Satria, M. Haikal Satria, Muhammad Haikal Setyanto, Barry Nur Sharifah Kamilah Syed Yusof Sharifah Kamilah Syed Yusof Sharifah Kamilah Syed Yusof Sharifah Yusof Sigit Prakosa Adhi Nugraha Sonny Hady Winoto Sri Arttini Dwi Prasetyawati Sucipto, Dany Sukarno Budi Utomo Sunaryo Sunaryo Sunaryo, Sunaryo Sunu Arsy Pratomo Suprawikno . Supriyadi, Kuat Suryani Alifah Sutarta Tarta Suyanta Suyanta Tri Basuki Kurniawan Triswahyudi, Daniel Vugar Abdullayev Waleed M. Gaballah Yahya Hidayatullah Yazid, M. Haider Abu Yudha Adi Putra Yudistira Marsya Puvindra Yusof, Sharifah Zakariya Ali Saeid Saeid