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All Journal Jurnal Fisika FLUX Infotekmesin International Journal of Marine Engineering Innovation and Research
Joko Endrasmono
Politeknik Perkapalan Negeri Surabaya
Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Analisis Reduksi Spektrum Sinar Biru Berbasis Papercraft Spectrometer pada Layar Ponsel Pintar Berjenis LED Mochamad Yusuf Santoso; Galih Anindita; Mades Darul Khairiansyah; Joko Endrasmono; Edy Setiawan
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 19, No 2 (2022): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.73 KB) | DOI: 10.20527/flux.v19i2.12129

Abstract

Seperti yang sudah kita alami bersama, ponsel pintar saat ini sudah menjadi bagian hidup sehari-hari. Pengguna ponsel pintar di Indonesia pada tahun 2021 diperkirakan mencapai 191,6 juta orang (70,1% populasi). Durasi penggunaan yang cenderung lama akan memberikan efek yang pada tubuh. Hal ini berhubungan dengan paparan radiasi sinar biru yang dihasilkan layar ponsel pintar. Penggunaan teknologi Light Emitting Diode (LED) menjadi semakin terkenal luas pada layar ponsel pintar. Walaupun terlihat berwarna putih, namun cahaya yang dipancarkan dari layar ponsel pintar memiliki panjang gelombang 400 – 490 nm, yang tergolong dalam kategori sinar biru. Dua saran umum yang dapat dilakukan untuk mengurangi paparan radiasi sinar biru yaitu pengurangan cahaya tingkat tinggi yang tidak perlu di malam hari dan redaman komponen panjang gelombang pendek dari spektrum. Namun, masih banyak pengguna yang tidak menyadari bahwa ponsel pintar mereka memiliki fitur filter sinar biru. Spektrum sinar biru dari layar ponsel dapat diamati menggunakan spektrometer. Saat ini, spektrometer sangat murah telah dikembangkan untuk dapat dirakit sendiri, misalnya papercraft spectrometer dari Public Lab. Artikel ini akan berfokus pada analisis reduksi sinar biru dari layar ponsel pintar berjenis LED. Terdapat tiga ponsel pintar yang diamati, yaitu masing-masing satu unit ponsel berjenis layar AMOLED, OLED dan Super AMOLED. Pengamatan dilakukan ketika fitur filter sinar biru bawaan ponsel diaktifkan atau tidak. Hasil analisis spektrum menunjukkan bahwa terdapat perbedaan nilai intensitas ketika filter sinar biru tidak diaktifkan dan diaktifkan. Ketika filter sinar biru bawaan dari ponsel diaktifkan, maka intensitas yang dihasilkan dari layar lebih rendah dibandingkan tanpa mengaktifkan filter. Berdasarkan perhitungan reduksi intensitas sinar biru, didapatkan bahwa rata-rata filter dari ketiga ponsel yang diamati mampu mereduksi sinar biru antara 52,79% - 68,78%. Ponsel pintar dengan layar Super AMOLED memiliki performansi reduksi spektrum sinar biru lebih baik dibandingkan dengan ponsel dengan layar OLED dan AMOLED.
The Integration of Supervisory Control and Data Acquisition (SCADA) on the Crushing and Barge Loading Conveyor Systems Imam Sutrisno; Ihza Anfasa Dua Nurhidta; Ii Munadhif; Edy Prasetyo Hidayat; Joko Endrasmono; Projek Priyonggo; Tri Mulyatno Budhi Hartanto
International Journal of Marine Engineering Innovation and Research Vol 8, No 1 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i1.15472

Abstract

The utilization of the Crushing and Barge Loading Conveyor (BLC) systems is important in coal processing. A crushing system is required as a tool for the process of crushing coal into smaller sizes and then transferring it to the stockpile. While a BLC system is needed to transport coal from the stockpile to the barge. In general, the control and supervision systems for crushing and BLC systems are carried out separately by two operators. However, the distance between two operators causes a time lag information. In this research, we create a Supervisory Control and Data Acquisition (SCADA) system with the type of Multiple Programmable Logic Controller (PLC) on the Crushing and BLC systems using Profinet communication integrated by two PLCs with one Human Machine Interface (HMI) and WinCC. The system is equipped with real-time data, automatic control, and online surveillance with smartphones via the S7APP application. The error resulting from the reading of each component by the HMI and smartphone reaches 0%, while for automatic control, the system works very well, having a success rate of 100%.
Kontrol Kestabilan Kapal Autonomous Submarine Surface Vehicle Dengan Metode Fuzzy logic Abdul Hafizh Abyan Faruq; Joko Endrasmono; Isa Rachman; Agus Khumaidi; Ryan Yudha Adhitya; Zindhu Maulana Ahmad Putra
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1920

Abstract

The Autonomous Submarine Surface Vehicle is a type of unmanned underwater vehicle. When the ship performs maneuvers, there are large Pitch and Roll motions. This research aims to control the stability of the Autonomous Submarine Surface Vehicle with Fuzzy. The first process is taking Pitch and Roll data followed by the Fuzzification process to change input data with firm values into Fuzzy values. The next stage is Inference by using the rules (if – then) and the Deffuzification process to change the results of the inference stage into output values. The last is the process of stabilizing the ship with a Thruster dc motor. When the system is activated, it has a time of 0.518 seconds faster to steady state than the deactivated system with a roll tilt of (plus) 11°. On the roll tilt of (plus) 20° the highest PWM rotation is 1600µs with a time of 9,342 seconds to steady state and the roll tilt is (plus) 11° with the highest PWM of 1500µs with a time of 4,335 seconds. Based on this research, the Fuzzy Method can control the stability of the Autonomous Submarine Surface Vehicle ship.
Co-Authors Abdul Hafizh Abyan Faruq Agus Khumaidi Edy Prasetyo Hidayat Edy Setiawan Galih Anindita Ihza Anfasa Dua Nurhidta Ii Munadhif Imam Sutrisno Mades Darul Khairansyah Mochamad Yusuf Santoso Projek Priyonggo Sumangun Lukitadi Ryan Yudha Adhitya Tri Mulyatno Budhi Hartanto Zindhu Maulana Ahmad Putra