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All Journal Journal of Applied Geospatial Information Jurnal Elementer (Elektro dan Mesin Terapan)
Hollanda Arief Kusuma
Department of Electrical Engineering - Universitas Maritim Raja Ali Haji
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Mechanical Engineering Physics

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Tides Measurement and Tidal Analysis at Jakarta Bay Hollanda Arief Kusuma; Muhammad Zainuddin Lubis; Nadya Oktaviani; Dwi Eny Djoko Setyono
Journal of Applied Geospatial Information Vol 5 No 2 (2021): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v5i2.2779

Abstract

Tides observation conducted for these purposes such as real-time depth of water, determination mean sea level and other tidal datums to establish a system of tidal benchmarks and data for production of tide and tidal current predictions. Center for Marine and Coastal Mapping – Geospatial Information System used water level and tides data mainly to correct the water depth measurement to chart datum. This study uses sea level observation data conducted from 20th February 2018 until 4th April 2018 at Marina Batavia, Jakarta. This study found that tidal types at this location is mixed diurnal using formzahl number. Astronomical and shallow water possible constituent were derived from the harmonic analysis. Fourier analysis gives clearly visual interpretation in frequency perspective. Several constituents inseparable because of short duration records.
Pengembangan Instrumen Pengukuran Aliran Air Berbasis Internet of Things (IoT) Hollanda Arief Kusuma; M. Irfan Wahyuni; Sapta Nugrah
Jurnal Elektro dan Mesin Terapan Vol. 7 No. 1 (2021): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (449.528 KB) | DOI: 10.35143/elementer.v7i1.4627

Abstract

Meteran air yang digunakan PDAM untuk mengetahui penggunaan air di rumah pelanggan masih bersifat analog sehingga pelanggan kesulitan dalam membaca jumlah penggunaan air. Tujuan dari penelitian ini ialah mengembangkan sebuah perangkat sederhana yang dapat mengetahui penggunaan air secara real time oleh pengguna berbasis IoT dengan tingkat akurasi yang baik. Penelitian ini menggunakan Water Flow Sensor, Arduino Pro Mini, Arduino Mega 2560, Modul GSM SIM900A, serta Modul Micro SD Card. Hasil dari penelitian pada saat pengkalibrasian Water Flow Sensor dengan 10 kali percobaan terhadap tujuh parameter yang berbeda didapatkan nilai RMSE sebesar 0,31 L/menit atau menyimpang sekitar 4,12%. Total penggunaan air yang didapat Water Flow Sensor berbanding jauh dengan meteran air PDAM diduga karena debit air yang mengalir dipengaruhi oleh tekanan dan spesifikasi sensor. Pengiriman data ke platform selama 24 jam memiliki tingkat keberhasilan sebesar 98,1%.
Co-Authors Dwi Eny Djoko Setyono M. Irfan Wahyuni Muhammad Zainuddin Lubis Nadya Oktaviani Sapta Nugrah