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All Journal Komunikasi Fisika Indonesia JOURNAL ONLINE OF PHYSICS Spektra: Jurnal Fisika dan Aplikasinya Unri Conference Series: Community Engagement PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Rahmondia Nanda Setiadi
Department Of Physics, Faculty Of Mathematics And Natural Sciences, University Of Riau, Indonesia
Aerospace Engineering Humanities Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics Other

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Teknologi mesin pengering pakaian berbasis limbah tempurung kelapa untuk meningkatkan ekonomi bagi UKM yang bergerak dalam bidang laundry di Kecamatan Tampan Kota Pekanbaru Antonius Surbakti; Juandi Muhammad; Erman Taer; Ramondia Setiadi; Usman Malik
Unri Conference Series: Community Engagement Vol 2 (2020): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.2.550-558

Abstract

The potential of the laundry sector, the entrepreneur community / UKM Laundry in Tampan District, which has very potential business potential. This clearly saves the huge potential of the Laundry / UKM business sector. The clothes drying system, which is carried out through the traditional drying method, has long been practised by Laundry UKM entrepreneurs. In particular, the clothes drying activity has long been a source of livelihood for the Laundry UKM community in Panam District. However, in general, the process of drying clothes through a drying method that relies solely on sunlight is not optimal. The process of drying clothes by laundry entrepreneurs in the Tampan District is still done traditionally, namely drying in the sun. This process takes a long time, it takes 2 to 4 days to dry clothes and it also depends on the presence of sunlight. The drying machine is designed to utilize heat from burning coconut shell waste which functions as a heat collector. So that the drying process can take place quickly, at any time and without depending on the sun. Control of the drying temperature is done by opening and closing the air ducts in the dryer. This dryer consists of a solar collector, biomass burning furnace, and drying room (box). The drying room functions as a place for clothes to be dried. The flow of heat from burning coconut shell waste to the drying chamber. The result of drying clothes is better than traditional drying. The drying technology based on coconut shell waste to dry clothes will be applied in the Laundry UKM community in Tampan District, Pekanbaru which is the livelihood of some UKM in Tampan District, Pekanbaru City
SIMULASI RANGKAIAN DC-DC BUCK CONVERTER DENGAN VARIASI NILAI RESISTOR BEBAN PADA SISTEM PENYIMPANAN ENERGI LISTRIK PANEL SURYA Valendio Febriano; Widyaningrum Indrasari; Rahmondia Nanda Setiadi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 10 (2022): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2021
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.247 KB) | DOI: 10.21009/03.SNF2022.01.FA.11

Abstract

Abstrak Untuk memanfaatkan energi surya sebagai sumber energi alternatif, umumnya energi surya akan disimpan terlebih dahulu di dalam baterai. Dalam melakukan proses penyimpanan energi tersebut, diperlukan suatu sistem pengontrol energi listrik dari panel surya agar lebih stabil. Salah satu caranya adalah menggunakan DC-DC Buck Converter. Penelitian ini bertujuan merancang sistem untuk mengontrol daya yang ditransmisikan dari panel surya menuju baterai agar lebih optimal. Oleh karena itu dilakukan simulasi rangkaian DC-DC Buck Converter menggunakan aplikasi LT Spice untuk mengetahui nilai arus dan tegangan keluaran pada sistem rangkaian. Simulasi ini dilakukan dengan memvariasikan nilai beban (R) pada filter dari rangkaian DC-DC Buck Converter. Variasi nilai resistor yang digunakan adalah 18 Ohm, 25 Ohm, 30 Ohm, 35 Ohm, 40 Ohm, 50 Ohm, 60 Ohm, dan 220 Ohm. Dengan menetapkan nilai tegangan input sebesar 20 Volt dan duty cycle sebesar 60%, didapatkan variasi nilai R yang paling mendekati nilai tegangan baterai adalah 30 Ohm dengan tegangan keluaran sebesar 12,03 Volt. Kata-kata kunci: energi surya, buck converter, simulasi, variasi beban. Abstract To utilize solar energy as an alternative energy source, generally solar energy will be stored in the battery first. In carrying out the energy storage process, a system for controlling electrical energy from solar panels is needed to make it more stable. One way is to use a DC-DC Buck Converter. This study aims to design a system to control the power transmitted from the solar panel to the battery so that it is more optimal. Therefore, a DC-DC Buck Converter circuit simulation was carried out using the LT Spice application to determine the current and output voltage values ​​in the circuit system. This simulation is done by varying the value of the load (R) on the filter of the DC-DC Buck Converter circuit. The resistor values ​​used are 18 Ohm, 25 Ohm, 30 Ohm, 35 Ohm, 40 Ohm, 50 Ohm, 60 Ohm, and 220 Ohm. By setting the input voltage value of 20 Volt and a duty cycle of 60%, the variation of the R value that is closest to the battery voltage value is 30 Ohm with an output voltage of 12.03 Volt. Keywords: solar energy, buck converter, simulation, load variation.
SIMULASI RANGKAIAN DC-DC BUCK CONVERTER PADA SISTEM PENYIMPANAN DAYA LISTRIK PANEL SURYA Ferdy Alfian Indra Prasetya; Widyaningrum Indrasari; Rahmondia Nanda Setiadi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 10 (2022): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2021
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.748 KB) | DOI: 10.21009/03.SNF2022.01.FA.14

Abstract

Abstrak Pada proses penyimpanan energi listrik yang dihasilkan oleh panel surya ke dalam baterai diperlukan suatu sistem pengontrol yaitu menggunakan DC-DC buck converter. Melalui sistem ini dapat mengoptimalkan proses transmisi energi dari panel surya ke baterai. Untuk mendapatkan optimasi rangkaian DC-DC buck converter, dilakukan perencanaan melalui simulasi rangkaian buck converter dengan memperhitungkan nilai faktor kualitas Q pada filter butterworth orde-2. Variasi Q yang digunakan terdiri dari tiga variasi, yaitu 0,541, 0,707, dan 1,307 dengan menggunakan frekuensi cut-off sebesar 5kHz. Masing-masing variasi Q menggunakan resistor R dengan nilai 180Ω, 220Ω, dan 430Ω. Hasil pengujian menunjukkan bahwa penguatan sinyal pada frekuensi cut-off masing-masing yaitu -4,8dB (untuk Q = 0,541), -3,1dB (untuk Q= 0,707), dan 2,7dB (untuk Q = 1,307). Hasil pengujian juga menunjukan bahwa noise yang dihasilkan pada tegangan keluaran semakin besar seiring dengan peningkatan nilai Q. Kata-kata kunci: Panel Surya, Buck Converter, Faktor Kualitas, Frekuensi Cut-Off. Abstract In the process of storing electrical energy produced by solar panels into the battery need a control system, namely using a DC-DC buck converter. Through this system, it is possible to optimize the energy transmission process from solar panels to batteries. To get the optimization of the DC-DC buck converter circuit, planning is done through simulation of the buck converter circuit by taking into account the value of the quality factor Q on the butterworth filter of order-2. The Q variation used consists of three variations, namely 0.541, 0.707, and 1.307 using a cut-off frequency of 5kHz. Each variation of Q uses a resistor R with a value of 180Ω, 220Ω, and 430Ω. The test results show that the signal gain at the cut-off frequency is -4.8dB (for Q = 0.541), -3.1dB (for Q = 0.707), and 2.7dB (for Q = 1,307). The test results also show that the noise generated at the output voltage is greater as the Q value increases. Keywords: Solar Cell, Buck Converter, Quality Factor, Cut-Off Frequency
INTRAVENOUS INFUSION DOSING SYSTEM FOR VOLUME CONTROL BASED ON SIGNAL PERIODIC MEASUREMENT Lazuardi Umar; Vira Annisa Rosandi; Rahmondia Nanda Setiadi; Zulharman Zulharman
Spektra: Jurnal Fisika dan Aplikasinya Vol 7 No 2 (2022): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 7 Issue 2, September 2022
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.072.04

Abstract

Intravenous fluid therapy is a commonly used treatment modality that is used in the treatment of hospitalized patients. Intravenous flow rates are often controlled by counting the number of fluid drops in a drip chamber while adjusting the intravenous line with a watch. In this research, an intravenous infusion dosing system was designed based on periodic signal measurement using a pair of light couplers consisting of a transmitter and a receiver. The transmitter is built using an infrared LED (BPV10NF), while the receiver uses an infrared photodiode detector (BPW34). The infusion droplet will pass a slit between the two coupler components and interrupt the light transmission from the transmitter to the receiver, which will affect the current through the photodiode and change the output status of the circuits. The parameters obtained from this circuit signal are droplet frequency from 1 Hz to 10 Hz and droplet sizes 0.05 ml and 0.0167 ml. The resulting output signal is in the form of pulses due to the interruption of the droplet when it passes through the optocoupler. The droplet frequency is calculated based on the period between adjacent droplets, while the droplet size can be measured based on the width of the resulting pulse. For the droplet measurement process, variations of the droplet period and the number of droplets per ml were carried out. The droplet period is regulated by manually adjusting the aperture of the infusion droplet outlet faucet. In contrast, the droplet size is controlled by two types of infusion devices with 20 drops/ml and 60 drops/ml specifications. The experimental results can be used to develop a system response that detects changes in period and droplet size.
ANALISA PERUBAHAN SUSEPTIBILITAS DAN KOMPOSISI SERTA UKURAN PARTIKEL OKSIDA BESI SEBAGAI FUNGSI KECEPATAN PUTARAN TABUNG BALL MILLING Indah Nurhidayah; Salomo Sinuraya; Erwin Amiruddin; Rahmondia Nanda Setiadi
Komunikasi Fisika Indonesia Vol 20, No 1 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.1.75-82

Abstract

The magnetic susceptibility, composition and particle size of natural sand has been carried out in Rokan River, Riau Province regency have been determined. Iron sand samples were processed using an iron sand separator (ISS). The magnetic and non-magnetic particles of ISS products were separated using neodymium iron boron (NdFeB) magnet. The product of ball milling (BM) with tube rotational speed functions of 100 rpm, 150 rpm, 200 rpm was milled for 80 hours with BM size of 2 cm. The magnetic susceptibility were determined based on magnetic induction of a selenoid measured using Probe Magnetic Pasco PS-2162. The composition of Rokan river natural sand was measured using x-ray fluorescence. The magnetic particles are determined using scanning electron microscope. The results showed that the magnetic susceptibility increases with increasing BM tube rotational speed 28,138.79 × 10-5 (100 rpm), 29,374.88 × 10-5 (150 rpm), and 30,955.32 × 10-5 (200 rpm). The composition of Fe in the sample has increased from 32.686% to 35,865%, while for Si has decreased from 38.604% to 33.729%. The particle size of natural sand for 80 hours milling displays the particle sizes from  883.4 for 100 rpm to 655.81 for the smallest particle size of the samples synthesized with 200 rpm.
ANALlSA KECEPATAN PUTARAN TABUNG BALL MlLLlNG TERHADAP SUSEPTlBILlTAS MAGNETlK DAN KOMPOSlSl SERTA UKURAN PARTlKEL OKSlDA BESl PASlR ALAM SUNGAl ROKAN Tasyha Dwi Safira; Salomo Sinuraya; Erwin Amiruddin; Rahmondia Nanda Setiadi
Komunikasi Fisika Indonesia Vol 20, No 1 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.1.83-90

Abstract

Magnetic susceptibility and composition of magnetic particles from the natural sand iron oxide, at Rokan River in Riau Province as a function of the rotating speed of ball milling tubes. Samples are separated the magnetic particles from non-magnetic particles using iron sand separator (ISS), called the ISS product. Refinement using neodymium iron boron magnet (NdFeB). The ball milling process is carried out for 80 hours using combined iron balls with diameter of 0.7 cm (48 balls), 1.5 cm (24 balls), and 2 cm (16 balls) with variety milling tube rotational speeds of 100, 150, and 200 rpm. The calculation of the magnetic susceptibility value is carried out based on the values of B0 and BT, while the composition of the sample by X-ray fluorescence (XRF) and the magnetic particle size of the sample is classified by scanning electron microscope. The result of the study indicates that the magnetic susceptibility of the ISS product has a value 2,895.99 × 10-5, while the value of the magnetic susceptibility of ball milling product increases with the increase in the rotating speed of the tube, namely 27,997.52 × 10-5, 29,975.27 × 10-5, and 30,690.44 × 10-5. XRF results show that the magnetic element Fe increased from 32.069% to 39.645%, while the non-magnetic element Si decreased from 31.127% to 29.187%. The average particle size obtained was smaller as the rotational speed of the milling tube increased, namely 679.72 nm, 619.14 nm, and 568.94 nm.
Classification of maturity levels of oil palm fresh fruit bunches using LED-based multispectral imaging methods and principal component analysis Mohammad Fisal Rabin; Minarni Shiddiq; Rahmondia Nanda Setiadi; Ihsan Okta Harmailil; Ramdani Ramdani; Dedi Permana
Indonesian Physics Communication Vol 21, No 1 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.1.91-98

Abstract

Multispectral imaging (MSI) is one of the optical methods used for the classification of fruits and vegetables based on ripeness levels. MSI is simpler than hyperspectral imaging due to fewer wavelength bands used hence less processing time. In this study, MSI is used to classify the ripeness of oil palm fresh fruit bunch (FFB). The MSI system consists of three main components, namely a VIS-NIR camera, a camera lens, an LED array, and a current control unit. The use of the LED array as a light source in the MSI system aims to minimize the use of bandwidth filters. The LEDs used are arranged in a circular pattern with 8 wavelengths, namely 680, 700, 750, 780, 810, 850, 880, and 900 nm. FFB samples were recorded using the MSI system and then processed using Python language to obtain relative reflectance intensity values. The purposes of this research are to analyze the relationship between relative reflectance intensity and wavelength and to classify the ripeness level of oil palm FFB using principal component analysis (PCA). We used two categories of ripeness, unripe and ripe FFBs.The results of the PCA analysis showed that the classification carried out was able to group into two levels of ripenesses with a total variant percentage value for PC1 and PC2 of 90.95%.
MEASUREMENT OF INFUSION FLOW RATE USING A DROPLET SENSOR BASED ON ARDUINO UNO Khairul Ihsan; Rahmondia Nanda Setiadi; Erman Taer; Lazuardi Umar
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.28946

Abstract

A research has been conducted to help the medical staff in the hospital. The purpose of this study is to calculate and regulate the infusion flow rate of the infusion into the patient's body. This research uses an experimental method. The liquid released from the infusion is converted into droplets, which are then detected by the LM393 optocoupler sensor, which consists of three sensors arranged around the detection area by emitting infrared light through a transmitter to detect the shadow of the droplet so that the signal is received by the receiver of the optocoupler sensor. Which is processed with the Arduino Uno microcontroller. The Arduino Uno provides the results received from the sensor and coded using the Arduino IDE software to be displayed on a 16x2-character Liquid Crystal Display (LCD). The sample used in this study was Sodium Chloride (NaCl). The calibration tools performed were droplet sensor test, servo motor test, and Real Time Clock (RTC) DS3231 module test. The results of the detection in the droplet sensor configuration showed a high degree of accuracy, with an error value of 2.414%. so that this research can be implemented in the detection and appropriate management of infusion flow rates. The current testing being carried out is still on a laboratory scale. However, in the future, this system can be developed to monitor infusions in real-time over a longer period of time and using more complex data processing functions.
Magnetic susceptibility, composition, and morphology of iron oxide particles resulting from ball milling of natural sand in the Rokan River Elfitah Ramadhani Triana; Salomo Salomo; Erwin Amiruddin; Rahmondia Nanda Setiadi
Indonesian Physics Communication Vol 21, No 2 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.2.121-126

Abstract

The magnetic susceptibility value and alterations in the composition and dimensions of iron oxide particles in the natural sand from the Rokan River, which were prepared using ball milling (BM), have been measured. Prior to undergoing the BM procedure, the sample's magnetic and non-magnetic particles are initially separated using an iron sand separator and a neodymium iron boron magnet. Subsequently, a 120-gram sample was obtained and subjected to the initial stage of BM for a duration of 80 hours, resulting in the formation of a product referred to as BM1. Next, product BM1 undergoes a second stage of BM with an extended duration of 30, 40, and 50 hours. The resulting products are termed BM2A, BM2B, and BM2C, respectively. The milled balls utilised were a total of 16 combined iron balls with a diameter of 2 cm, 32 combined iron balls with a diameter of 1.5 cm, and 64 combined iron balls with a diameter of 0.7 cm. The findings indicated a positive correlation between the duration of BM rotation and the magnetic susceptibility value. Specifically, the value increased from 11,361.6 in BM1 to 12,398.7 in BM2A, 13,383.4 in BMB, and 14,541.2 in BM2C. The XRF test findings also indicated an increase in the fraction of the magnetic element, Fe, from 38.113% in BM1 to 40.133% in BMA, 41.629% in BM2B, and 42.478% in BM2C. The SEM test findings indicated a decrease in the average particle size of the samples from 696 nm to 401, 356, and 288 nm.
Effectiveness of adding ZnO thin films to metamaterial structures as sensors Saktioto Saktioto; Yan Soerbakti; Ari Sulistyo Rini; Budi Astuti; Erman Taer; Rahmondia Nanda Setiadi; Syamsudhuha Syamsudhuha; Sofia Anita; Yolanda Rati
Indonesian Physics Communication Vol 21, No 1 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.1.13-24

Abstract

Metamaterials are artificial materials with the characteristics of a negative refractive index and high resonance sensitivity. Advanced engineering in metamaterials can realize great potential in combination with zinc oxide (ZnO) semiconductor materials, which can increase the efficiency of sensor technology compared to other conventional material models. This research aims to investigate the optical properties and develop an invention for a hybrid sensor media based on a split ring resonator (SRR) metamaterial structure integrated with a thin layer of ZnO. The research methodology was carried out by simulation by designing and characterizing SRR metamaterials which were designed with variations in SRR patterns, geometry, substrate materials, unit cell configurations, and variations in the thickness of the ZnO thin layer. Geometry characterization of SRR metamaterials was carried out using the Nicolson-Ross-Weir electromagnetic (EM) field function approach, specifically the optical parameters permittivity, permeability, and refractive index. They are optimizing the performance of hybrid sensor components based on metamaterials and ZnO thin films using the GHz scale EM field function approach, especially in the reflection, transmission, and absorption spectrum. Analysis of metamaterial characteristics identifies the optical properties of permittivity, permeability, and negative refractive index which are increased and optimized from the thin layer integration model 200 nm thick ZnO in the SRR metamaterial structure with a 3×3 square pattern configuration at a resonance frequency of 1.889 GHz. The performance of the hybrid sensor media provides a resonant frequency of three equal bandwidths in the frequency range 2.89 – 3.52, 5.28 – 6.54, and 7.57 – 8.46 GHz. In addition, the highest absorption spectrum of 73% is at a frequency of ~8 GHz.
Co-Authors Anita, Sofia Antonius Surbakti Budi Astuti Dedi Permana Elfitah Ramadhani Triana Erman Taer Erwin Amiruddin Erwin Amiruddin Ferdy Alfian Indra Prasetya Ihsan Okta Harmailil Indah Nurhidayah Juandi Juandi Khairul Ihsan Lazuardi Umar Lazuardi Umar Minarni Minarni Mohammad Fisal Rabin Ramdani Ramdani Rini, Ari Sulistyo Saktioto Saktioto Salomo Salomo Salomo Sinuraya Syamsudhuha Syamsudhuha Tasyha Dwi Safira Usman Malik Valendio Febriano Vira Annisa Rosandi Widyaningrum Indrasari Yan Soerbakti Yolanda Rati Zulharman Zulharman