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All Journal Teknik dan Ilmu Komputer JURNAL ELEKTRO Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri SABDAMAS Rekayasa: Jurnal Teknik Sipil Jurnal Ilmiah Teknik Mesin Poros Jurnal Pengabdian Masyarakat Charitas Cylinder : Jurnal Ilmiah Teknik Mesin Jurnal Serina Abdimas
Sandra Octaviani
Universitas Katolik Atmajaya
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Perancangan Sistem Filtrasi Air Berbasis Virtual Programmable Logic Controller (PLC) dan Human-Machine Interface (HMI) Bachri, Karel Octavianus; Karangga, Yusaphat Phosa; Mahyastuty, Veronica Windha; Sereati, Catherine Olivia; Mulyadi, Melisa; Octaviani, Sandra
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 10 No 2 (2024): OKTOBER 2024
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v10i2.5607

Abstract

In the industrial environment, automation technology is becoming increasingly vital for boosting process efficiency and dependability. Water filtration is one of the most essential industrial uses. This study aims to evaluate the performance of PLC virtual control systems in regulating and managing water filtration processes, and HMI provides an intuitive graphical interface for operators to monitor and control processes. The simulation in this study employs the integrated Virtual PLC Codesys Virtual Win V3 and HMI Aveva Intouch software. Turbidity sensors are used to confirm the clarity of water after it has been filtered. The results of this study demonstrate that using the virtual control system, PLC and HMI, can facilitate the operation and monitoring of water filtration.
A Two-Machine Flow Shop Batch Scheduling Model to Minimize Total Actual Flow Time Yusriski, Rinto; Nasution, Andri Rachmat Kumalasian; Lukas, Lukas; Wijayanti, Linda; Octaviani, Sandra
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 25 No. 2 (2023): December 2023
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jti.25.2.179-194

Abstract

This study introduces a scheduling model for a two-machine flow shop batch system to minimize the actual flow time. In this system, two machines are responsible for processing raw materials and producing finished products, with a single bottleneck machine. The entity overseeing the manufacturing process organizes demand units into batches, ensures the accurate and timely arrival of raw materials, and delivers all finished products punctually to meet an expected due date. The study addresses crucial challenges, including determining the optimal number of batches, sizes, and sequences to achieve the specified objective. The analysis adopted an algorithm grounded in the Lagrange relaxation method to tackle these challenges. Moreover, the algorithm is operated by identifying the bottleneck machine as a scheduling reference and determining the appropriate number of batches and sizes. The analysis showed the efficacy of the developed algorithm by using Johnson's rule for making batch sequence decisions through numerical experiments conducted across 1000 cases. The results showed a 1.44% to 4.43% improvement in efficiency compared to previous research, accompanied by a 2–8 times reduction in computational time.
PEMBUATAN INKUBATOR TUKIK UNTUK KONSERVASI PENYU PANTAI PANGUMBAHAN UJUNG GENTENG Octaviani, Sandra; Ghozali, Theresia; Basuki, Widodo Widjaja; Wijayanti, Linda; Sereati, Catherine Olivia
Jurnal Serina Abdimas Vol 1 No 2 (2023): Jurnal Serina Abdimas
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jsa.v1i2.26110

Abstract

Turtles are protected animals because of the emergency of extinction by a lot of conservation of turtle cultivation to increase its population. It is unavoidable if there are still many population reductions from turtles, one of which comes from the low survival rate of baby turtles called hatchlings. The process of laying eggs for female turtles requires warm beach sand to cover their eggs and this occurs at night when the moon is dark. After about two months the eggs will hatch, and the hatchlings usually go straight to the sea. There are many disturbances experienced by hatchlings to get to the sea such as being kidnapped, being preyed upon, and not even going to the sea. Improvements in conservation facilities are made to provide an incubator which are always kept warm by being provided with a bulb as a heater, a thermostat as a temperature regulator and a humidifier as a humidity regulator. After hatching the eggs are placed in a replacement pond which was built as a hatchling pond for temporary shelter for the newly hatched hatchlings, and the pond is placed in a cleaned hatchery room with the roof replaced with a mild steel frame The result of the upgrade from this facility is that hatchling success has increased to 91%, and newly hatched hatchlings can be closely monitored until they are ready to be released into the sea. It is hoped that the turtle population in the world can be maintained so that our children and grandchildren will be able to see the turtles directly. Penyu merupakan hewan yang dilindungi karena darurat akan kepunahannya. Sudah banyak konservasi budidaya penyu untuk meningkatkan populasi penyu. Tetapi tidak dapat dihindari jika masih banyak pengurangan populasi dari penyu, yang salah satunya berasal dari rendahnya tingkat keberhasilan hidup dari bayi penyu yang disebut tukik. Proses bertelur penyu betina memerlukan pasir pantai yang hangat untuk menutupi telur-telurnya dan hal ini terladi pada malam hari saat bulan gelap. Setelah sekitar dua bulan telur akan menetas dan tukik biasanya langsung berjalan menuju ke laut. Banyak gangguan yang dialami oleh tukik untuk bisa sampai ke laut seperti diculik, dimangsa, dan bahkan tidak menuju ke laut. Peningkatan fasilitas konservasi yang dibuat menyediakan ruang inkubator yang senantiasa dipertahankan hangat dengan diberi bohlam sebagai penghangat, thermostat sebagai pengatur suhu dan humidifier sebagai pengatut kelembaban. Setelah telur menetas ditempatkan di kolam pengganti yang dibangun sebagai kolam tukik untuk penampungan sementara bagi tukik yang baru menetas, dan kolam diletakkan dalam ruang tukik yang sudah dibersihkan dengan atap diganti dengan rangka baja ringan. Hasil dari peningkatan dari fasilitas ini adalah keberhasilan penetasan tukik meningkat menjadi 91 %, dan tukik yang baru menetas dapat diawasi dengan seksama sampai siap dilepas ke laut. Diharapkan populasi penyu yang ada di dunia dapat terjaga hingga anak cucu kita nanti dapat melihat langsung penyu yang ada.
Co-Authors ., Weimintoro Anthon de Fretes, Anthon de Fretes Austin, Calvin Bachri, Karel Octavianus Basuki, Widodo Widjaja Catherine Olivia Sereati Duma Kristina Yanti Gunawan, Harjadi Hadi Sutanto Harto Tanujaya Henry Cahya Tanijaya Indriati, Kumala Karangga, Yusaphat Phosa Lukas Lukas Lukas, Lukas Marcellio, Ricco Marten Darmawan Melisa Mulyadi Nasution, Andri Rachmat Kumalasian Octavianus Bachri, Karel Pangestu, Evan Sudira Pranadjaya, Egipta Rinto Yusriski Rippun G. Manalu, Ferry Rosehan Rosehan, Rosehan Sachi, Haenuki Steven Darmawan, Steven Sugioko, Andre Surya Permana, Rizky Theresia Ghozali Timothy Sutjipto, Marcellus Tjahjadi, Fanny Trifenaus Prabu Hidayat Veronica Windha Mahyastuty Wijayanti, Linda Windha Mahyastuty, Veronica