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All Journal Sinusoida: Jurnal Penelitian dan Pengkajian Elektro SAINSTECH: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Abdul Multi
Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia
Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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RANCANG BANGUN ALAT KENDALI BEBAN DAYA LISTRIK PADA MESIN PRODUKSI DENGAN SCADA BERBASIS PROGRAMMABLE LOGIC CONTROLLER DAN SMARTPHONE Anthony Jayanto Ramadhan; Abdul Multi; Edy Supriyadi; Iriandi Ilyas
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 32 No 3 (2022): Sainstech : Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

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

Abstract

Abstract With limited electrical resources and the increasing use of loads on the industry, it is required to optimize the use of electrical power. Thus, it requires continuous monitoring and automatic load control. Overall monitoring of power loads, and electrical control settings in the optimization of production machines that can be monitored remotely and comprehensively. To overcome this problem, the design of the electrical power load control device on production machines with scada based on programmable logic controllers and smartphones is made. This study uses an experimental method to obtain a suitable machine simulator, then the following steps are carried out: collecting data and information, determining the controller and communication system, making hardware design, wiring simulator, software controller design, android smartphone software design and HMI software design. As for the control of the electric power control system in optimizing the operation of production machines with scada and smartphones. From the test results obtained a system that can work well. This is evidenced by looking at the measurement data for testing the input/output signal from the controller by looking directly at the controller, as well as on the HMI monitor by displaying the amount of electrical power used and the amount of available electrical resources, which is done by simulating analog input/output. with a scale of 0-100% (0-10 V), 0-1000 KW (0-10 V). Keywords: PLC Control, Android, Mobile HMI, WiFi, SCADA
Analisis Hotspot Pada PMS Gardu Induk 150 KV Rawadenok Depok Menggunakan Metode Thermovision Abdul Multi; Hafizh Mubarok; Sugianto Sugianto
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 32 No 4 (2022): Sainstech : Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v32i4.1449

Abstract

Abstract Hotspot analysis at PMS Substation 150 kV Rawadenok Depok using the thermovision method was initiated based on hotspot events on Contact Finger phase S and Disconnecting Switch phase S. This analysis uses the Thermovisi Flir 400 tool as a means of checking high current temperatures that occur in Contact Finger phase S and Disconnecting Switches. The function of this thermovision is to measure the value of the ratio of the energy radiated by an object to the energy radiated by a black body at the same temperature and wave. Then measure the accuracy of Thermovisi starting from the value when checking, testing emissivity values, precision test values, accuracy values and repairs at hotspot points. From the results of the calculation of thermovision accuracy at Bay Cimanggis 1 & 2, it can be concluded that the temperature of the clamps and conductors shows that the conditions are still good. Where the RSM value of 27 samples is 0.4751, and has a coefficient variation (CV) of 0.1% and is categorized as good with a reference of no more than 2%, and has an accuracy value of 97.51%. Prior to the improvement of the hotspot points on Contact Finger it reached 115 oC and the DS Line S phase reached 103 oC after the temperature improvement returned to normal with Contact Finger reaching 36oC and the DS Line S phase reaching 31.2 oC. Keywords : PMS, Thermovisi, Hotspot, Emisivitas
Sorting system tool prototype Dimensi, Berat dan Barcode Kota Tujuan Berbasis Mikrokontroler Edy Supriyadi; Sultan Arfan Dzununrain; Abdul Multi; Iriandi Ilyas
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 32 No 4 (2022): Sainstech : Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v32i4.1478

Abstract

Summary Peningkatan perbelanjaan online pada saat masa Pendemi, membuat expedisi pengiriman barang sangat banyak dibutuhkan oleh masyarakat Indonesia. Dikarenakan pemilahan barang dilakukan secara manual mengunakan logika pekerja yaitu untuk mengetahui ukuran benda dan berat benda tersebut dan tidak disortir berdasarkan area kota tujuannya. Hal ini menyebabkan adanya kemungkinan beberapa masalah dalam pengiriman barang seperti keterlambatan pengiriman, sampai salah alamat pengiriman. Masalah tersebut disebabkan karena manusia terkadang tidak fokus sehingga menyebabkan ketidaktelitian dalam sistem pemilahan barang. Kejadian ini dapat menimbulkan kerugian dan bisa menyebabkan masyarakat ragu untuk menggunakan metode berbelanja secara online. Untuk mengatasi hal tersebut maka dibuat prototype alat sortir barang berdasarkan dimensi, berat dan barcode kota tujuan berbasis Mikrokontroler. Penelitian ini menggunakan metode eksperimental untuk mendapatkan prototype alat sortir barang yang sesuai dengan dimensi, berat dan barcode kota tujuan , maka dilakukan langkah-langkah sebagai berikut: mengumpulkan data dan informasi, menentukan kontroler dan system komunikasi, membuat design hardware, wiring simulator, design software controller, dan design software pembacaan data ke LCD. Sedangkan untuk kontrol sistim kendali alat sortir barang dalam optimalisasi operasionalnya dijalankan oleh conveyer berjalan. Metode dilakukan dengan menyortir barang yang akan dikirim sesuai kota tujuan yang tertera pada Barcode, dan dipilah lagi apakah barang akan dikirim box kecil oleh motor, atau dikirim box besar oleh mobil, sesuai dengan data hasil deteksi dari sensor Load cell dan sensor Ultrasonic HC-SR04 dan dibantu oleh sensor infrared sebagai tanda adanya barang yang menyebabkan motor conveyor bekerja. Dari hasil pengujian didapatkan sistem yang dapat bekerja dengan baik. Hal tersebut dibuktikan dengan melihat data hasil pengukuran untuk Pengujian system secara keseluruhan, dari mulai barang terbaca oleh sensor Ultrasonic HC-SR04, sensor Load cell, infrared dan Barcode scanner kemudian diproses oleh Mikrokontroler Arduino Mega 2560. Dari proses pengujian penyortiran, alat ini menghasilkan 93,34% keberhasilan. Pada pengujian sensor infrared dapat bekerja dengan sangat baik sensor dapat mendeteksi barang dengan jarak yang telah dikalibrasi dengan ketepatan 100%. Kata kunci: .Alat sortir,Barcode scanner, Load cell,infrared, Arduino Mega 2560
Analisis Otomatisasi Kalibrator Tekanan Udara Portabel dengan Pengontrol PID dengan Metode Ziegler-Nichols dan Åström–Hägglund Budi Santoso; Masbah R.T. Siregar; Abdul Multi; Muhammad Ridwan
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 33 No 1 (2023): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v33i1.1652

Abstract

Abstract Atmospheric pressure is one of the weather parameters that have an important role in meteorological services, especially inflight transportation. Atmospheric pressure sensors must be calibrated regularly to ensure the measurement results. The increasing number of atmospheric pressure sensors makes it impossible to calibrate in the laboratory because it can result in meteorological service downtime. Portable calibrators can be used to overcome this problem, by utilizing peristaltic pumps, solenoid valves, and microcomputers. The PID control is programmed on the microcomputer to control the speed of the peristaltik pump and the cycle of the solenoid valve to generate air pressure according to the set point determined automatically using the PID control. The Åström–Hägglund method has the lowest average stability uncertainty value at 0,003 hPa/
Network Metadata (NETTA) : Sistem Monitoring Jaringan Dan Metadata UPT BMKG Dengan Notifikasi Berbasis Telegram Siti Zainab; Djoko H. Nugroho; Masbah R.T. Siregar; Hendi Satria WD; Abdul Multi; Muhammad Nur Huda
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 33 No 1 (2023): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v33i1.1653

Abstract

ABSTRACT BMKG has a role to disseminate geo-hydrometeorological information in the fields of Meteorology, Climatology and Geophysics. The dissemination process requires data from BMKG operational equipment spread across 183 Technical Implementation Units (UPT) throughout Indonesia. The recorded data must be collected and disseminated using a communication network. The existing network monitoring system currently at BMKG uses the PRTG monitoring application but can only be accessed by central employees. Thus, a system that can be accessed by regional employees to see the condition of the communication network in each UPT is needed, so that it can support operations. This paper discusses monitoring system and communication network metadata design with notifications using telegrams that can be adapted for operations at BMKG called NetTa (Network Metadata). The system consists of a network monitoring dashboard, provider rental metadata dashboard, network monitoring notifications via Telegram bots. The system operates in real time and can be accessed from anywhere using a smartphone and PC. The results of functional testing show that monitoring system of all existing features on the system can be accessed according to the design. Telegram notifications can provide network device status as well as warnings if there is a communication network interruption based on the monitored sensor code Keywords : Monitoring, Network, UPT BMKG, Telegram, Metadata
Rain Attenuation Analysis On VSAT KU-BAND Frequency Meteorological Station of Mopah Merauke Anna Setyawati; Irwan Krisnadi; Abdul Multi; Agus Sofwan
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 33 No 1 (2023): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v33i1.1654

Abstract

Abstract BMKG is one of the government agencies that provides Meteorological, Climatological, and Geophysic observation data, sent from each Work Unit or Site Sensor. One of the communication media used is VSAT. The Ku-band channel is one of the frequencies used by the BMKG for communication and data transmission. The Ku-band channel has a weakness for propagation, namely rain attenuation. It is necessary to calculate the effect of rain attenuation on the Ku-band channel, in order to obtain efficient power by each earth station. Model ITU-R P.618-5 is one of the rain attenuation prediction models and is generally used for frequencies up to 30 GHz. One of the BMKG station locations that uses the Ku-Band channel is Mopah Merauke Station. With rainfall data of 80.2 mm/hour in Mopah Merauke, ITU-R P.618-5 produces a rain attenuation of 17.86 dB. While the percentage of error with measurement data is 30.1%. Keywords: BMKG, VSAT, Ku-Band, ITU-R P.618-5, Merauke, propagation, attenuation, rain
Rancang Bangun Sistem Pemantauan dan Pengendali Kualitas Udara Pada Aplikasi Welding Habitat Proses Welding Pipeline Sistem Dengan Data Logger Ahmad Daerobi; Abdul Multi; Masbah R.T. Siregar
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 33 No 3 (2023): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v33i3.1738

Abstract

Abstract Air Quality Monitoring and Control System is a method of monitoring and controlling air quality in an area or place where air contamination may occur in an activity or work. In this case, the Air Quality Monitoring and Control System is applied to the welding habitat or the welding house in the system pipe welding process. At this time, the welding habitat in the welding pipe pipeline system with the shielding gas process has not been monitored and controlled for air quality during the welding process, this condition causes the welder in the welding habitat to become uncomfortable which can affect the quality of the welding and endanger the welder's health. For this reason, an air quality monitoring and control system is needed that can unite and control the air quality in the welding habitat during the welding process. The purpose of the design of this Air Quality Monitoring and Control System is to make the welding process in the welding habitat of the system pipe welding process more comfortable and safer for the welder's health. So that the welder can concentrate fully on the welding process and produce good and quality welding production. With the application of this system, it can provide a level of weld repair that can reduce welding repair costs incurred by the Company. Keywords: Air Quality; Data Logger; ESP32; ISPU (Air Pollution Standards Index); Sensors
Rancang Bangun Real Time Monitoring & Controlling Infant Incubator Dengan Tilt Stabilizer Untuk Mengurangi Kemiringan Saat Pemindahan Bayi Menggunakan Rasberry PI Berbasis IOT Syaiful Romadhon; Abdul Multi
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 33 No 3 (2023): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v33i3.1739

Abstract

Abstract The rapid advancement of technology requires innovation to introduce superior features compared to existing technologies, including in the field of healthcare, such as infant incubators. Currently, there is no infant incubator that incorporates an automatic tilt stabilizer, even though the inclination values have been specified and established by the Indonesian National Standard with a recommended 5° inclination during regular usage and a 10° inclination during baby transfers Therefore, The Design and Development of an Infant Incubator with a Tilt Stabilizer for Reducing Tilting During Baby Transfers Using Raspberry Pi-based IoT was undertaken. This research uses an experimental method to achieve the desired performance, following these steps: collecting data and information, controller determination, hardware design, circuit schematics, software design, and user interface website design. Raspberry Pi was chosen as the controller due to its sufficient input and output (GPIO) pins to read sensors and operate actuators. The tilt stabilizer was created usings NEMA17 stepper motor and self-designed flexible screw nut to ensure precise tilt adjustment. During testing, the system demonstrated reliable performance. This was verified by analyzing the test data and sensor readings displayed on the HDMI-connected screen, concurrently with the data presentation on the website. The temperature graph inside the incubator consistently maintained a value of 37°C with a deviation of 2°C using the PID control methode. The incubator's tilt, when transferred to an inclined surface of 20°, remained stable at 10° when the tilt stabilizer was activated. Keywords: Infant incubator, Tilt stabilizer, Raspberry Pi, IoT, Sensor.
Estimasi Sensor Temperatur Udara Automatic Weather Station Menggunakan Algoritma Hybrid Arima-MLP Suciarti Suciarti; Masbah R.T. Siregar; Abdul Multi
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 33 No 3 (2023): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v33i3.1740

Abstract

Abstract Air temperature sensor is installed in an enclosure with a relative humidity sensor at a height of 1.25 meters from the ground. This sensor is routinely calibrated every year through a field comparison mechanism using standard portable. However, air temperature sensor has potential to experience troubles due to technical or non-technical factors. Estimation of temperature data can overcome loss data. This study aims to design an estimation model for air temperature sensor data using the ARIMA-MLP hybrid algorithm. Estimated air temperature sensor is focused on AWS Cisurupan in Garut Regency, West Java on 2019. The estimated data has an interval of 10 minutes. Outlier detection uses range check and step check methods. Missing data imputation method utilizes multiple linear regression-based interpolation. ARIMA-MLP hybrid algorithm is able to detect elements of linearity and nonlinearity of air temperature measurements. This algorithm meets WMO requirements regarding air temperature measurements, if training data is used with a minimum percentage of 85% of the entire modeling dataset. The resulting RMSE value is less than 0.20C. Keywords: air temperature, Automatic Weather Station, hybrid ARIMA-MLP
The Peningkatan Efisiensi Energi Listrik Melalui Pengelolaan AC dan Lampu Berbasis Counter Dimas Rahmat Prasetya; Abdul Multi
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 35 No 2 (2025): Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v35i2.2302

Abstract

Global warming caused by greenhouse gas emissions has become a critical issue that needs urgent attention. One of the major contributing factors is electricity consumption in office buildings, particularly from air conditioning (AC) systems and lighting. Therefore, energy efficiency in office buildings must be optimized to reduce environmental impact while minimizing operational costs. This study applies a technical approach to optimizing AC and lighting systems at the headquarters of a mining company. The implemented measures include managing electrical systems based on actual energy needs, utilizing energy-efficient devices, and designing systems that reduce electrical loads. Collaboration with ISTN students further enriches the solutions through the application of relevant knowledge. The study results show that energy optimization achieved a savings of 1,397.94 kWh per month, reducing electricity consumption by up to 62.9% and lowering the company's operational costs by Rp 2,374,892.80 per month. These efficiency measures support corporate sustainability goals by improving budget efficiency. Keywords: Global warming, energy efficiency, electrical systems, AC and lighting, sustainability
Co-Authors Agus Sofwan Ahmad Daerobi Andri Yulias Saputra Anna Setyawati Anthony Jayanto Ramadhan Bagas Arief Apri Bagas Arief Apriansyah Baskoro Abhi P Budi Santoso Dimas Rahmat Prasetya Djoko H. Nugroho Edy Supriyadi Edy Supriyadi Fahmi Rosyidi Gede Bayu Mahendra Hafizh Mubarok Hendi Satria WD Hendri Satria WD Iriandi Ilyas Irwan Krisnadi Iwan Krisnadi Masbah R.T. Siregar Mohammad Dicky Rivandi Muhamad Ridwan Muhammad Nur Huda Muhammad Ridwan Mukhamad Surya Hudha Rahmi Berlianti Sigit Pudji Handojo Siti Zainab Suciarti Suciarti Sugianto . Sugianto Sugianto Sultan Arfan Dzunnurain Sultan Arfan Dzununrain Syaiful Romadhon Thufail Addaus