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RANCANG BANGUN SISTEM METERAN LISTRIK PRABAYAR BERBASIS ANDROID
Get PDFProyek akhir ini membahas tentang permasalahan utama bagi masyarakat di Indonesia yaitu bagaimana meningkatkan efektivitas dalam melakukan pembayaran listrik. Terdapat suatu masalah yaitu kebanyakan masih menggunakan metode manual dalam pembayarannya. Cara seperti ini tentu kurang praktis dan kebanyakan dengan metode manual masih terjadi adanya kesalahan dalam pembayarannya.Sebagai solusi permasalahan tersebut, diperlukan alat yang untuk membantu pembayaran secara otomatis dan dibuatlah rancang bangun sistem meteran listrik prabayar berbasis android. Sistem terdiri dari sensor (pengukur) arus dan tegangan litrik PLN. Kemudian dengan melalui rangkaian penyesuai dihubungkan dengan masukan mikrokontroler arduino untuk dibaca setiap perioda tiap detik. Hasil pembacaan tiap detik tersebut merupakan pemakaian listrik dalam Watt detik yang setiap detiknya diakumulasikan. Setiap hasil akumulasi akan diproses lebih lanjut antara lain untuk memperbaharui pengurangan sisa saldo. Jika sisa saldo nol, maka dilakukan pemutusan listrik oleh mikrokontroller melalui relay pemutus. Jika pengguna telah mengisi ulang saldo token, dilakukan penyambungan kembali listrik dari PLN. Sistem juga dilengkapi fitur peringatan dini melalui display apabila sisa saldo telah mencapai batas angka tertentu sesuai keinginan pengguna. Berdasarkan hasil pengujian yang telah dilakukan pembacaan sensor arus pada sistem kWh meter ini memiliki kesalahan sebesar 1,904 %, sensor tegangan sebesar 0,919 %
RANCANG BANGUN ALAT UKUR VISKOSITAS DIGITAL PADA OLI MENGGUNAKAN SENSOR EFEK HALL
Get PDFOli mesin pada sepeda motor berfungsi sebagai minyak pelumas, pendingin, pelindung dari karat, pembersih dan penutup celah pada dinding mesin. Pelumasan terhadap mesin digunakan untuk menghindari terjadinya gesekan langsung antara logam dalam mesin sehingga tingkat keausan logam dan tingkat kerusakan mesin dapat dikurangi. Untuk mendapatkan minyak pelumas yang sesuai dengan jenis mesin kendaraan yang digunakan ada beberapa hal yang harus diperhatikan. Salah satu dari hal tersebut adalah tingkat kekentalan dari minyak pelumas. Faktor kekentalan atau viskositas oli merupakan besaran yang harus disesuaikan dengan klasifikasi mesin. Tetapi masyarakat awam memilih oli hanya berdasarkan merk maupun harga yang ditawarkan oleh produsen. Pada penelitian ini akan diimplementasikan suatu sistem pengukuran sensor kekentalan oli dengan menggunakan metode silinder konsentris. Metode menggunakan dua buah silinder konsentris yang berbeda ukuran dengan ruang diantara kedua silinder tersebut diisi dengan cairan yang akan diuji. Silinder luar atau rotor diputar menggunakan motor DC dengan kecepatan konstan dan torsi yang dihasilkan dari silinder dalam atau stator diukur menggunakan sensor efek hall. Pengukuran viskositas dilakukan pada oli SAE 20W-40 dan oli SAE 10W-30 dengan memberikan kecepatan putar motor konstan dan temperatur pada cairan yaitu 27oC. Hasil eksperimen pada temperatur cairan 27oC dan kecepatan putar awal motor 68 Hz menunjukkan nilai viskositas SAE 20W-40) yaitu 162,1 centiPoise dan viskositas oli SAE 10W-30 yaitu 123,8 centiPoise. Hasil eksperimen menunjukkan yaitu semakin kental oli maka kecepatan putar motor DC semakin kecil
Preliminary Overview of Three Purpose-Built Capital Spatial Plans Related to Indonesian Capital Relocation Plan
Get PDFIndonesia has a program to relocate its capital from Jakarta to East Kalimantan Province. This is a big and complex problem and is very interesting for Infrastructure & Facility Asset Management. Develop reflection on the case is very good to enrich and to develop IFAM knowledge and science. The first step has been done by developing an overview of several capital relocation cases. This research, the second step, is designated to make observations on the spatial plan of three good capitals. Visiting experience of the authors, enriched by literature study has been conducted. The reseach has main conclusions. It is better to develop a new city on an empty inhabited area. The symbolic aspect of the city is very important. A good plan, development, and control must be applied. The city must be green and intelligent. The capital must be divided into core areas for accomodating government offices and the peripheral area for accomodating residential areas and recreational areas. Well designed vast enough open space and several green parks are needed. The whole city must be furnished with good urban public transport. A good domestic and international accessibility is capital
Board of Editor
Get PDFBoard of Editor PATRON : Dean - Faculty of Civil, Environmental, Earth Sciences - ITS.Head Training Center Management & Functional Position - Ministry of PWPH. RESPONSIBLE : Head of Department – Civil Engineering Department - ITSBOARD OF EDITOR Chief Editor : Ria Asih Aryani Soemitro ITS, Indonesia h-index (GS = 10)Founding Editor : Hitapriya Suprayitno ITS, Indonesia h-index (GS = 8) Managing Editor : Trihanyndio Rendy Satrya ITS, Indonesia h-index (GS = 2) Mahendra Andiek Maulana ITS, Indonesia h-index (GS = 2)Editor : Data Iranata ITS, Indonesia h-index (GS = 3) Alex Abdi Chalik PUPR, Indonesia h-index (GS = -) Danang Parikesit UGM, Indonesia h-index (GS = 7) Maimunah Sapri UTM, Malaysia h-index (GS = 15) Wahyu Caesarendra UBS, Brunei Dar es Salam h-index (GS = 17) Address : Editor JIFAM – Room J - 201 Departement of Civil Engineering Institut Teknologi Sepuluh Nopember ITS Campus, Sukolilo, Surabaya 60111 Email: [email protected] Website: https://iptek.its.ac.id/index.php/jifam
Wave numerical model of swell and sea at Rote strait
Get PDFA spectral wave numerical simulation based on SWAN is used to model 10 years wave climate at Rote Strait, Nusa Tenggara Timur province. ERA5 reanalysis data of total wave and wind is used for model forcing. Simulation results show waves direction in Rote strait are coming from southeast and southwest. Waves direction at nearshore of southeast Timor island coast are coming from southeast because of refraction and diffraction. Waves height over 0.8 m occurs in 320 days in one year. 50 years wave return period calculated at 2.68 m height
Noise Reduction in Ship Engine Room by Optimisation of Muffler Design
Get PDFNoise level onboard, particularly in the engine room, requires a careful monitor to not causing any disruption or discomfort to the shipboard environment. For monitoring purposes, an appropriate alternative system can be applied if the noise level exceeds the limit set by applicable regulations such as IMO, ABS, and LR. The current research uses computational methods to map noise contours in the engine room and recommends some muffler models to reduce the noise level in the MV Natuna Express engine room. Based on the field measurement, the noise level exceeds the Standards value at a maximum of 110 dB. Mapping and designing of the muffler models were based on the measurement data. Simulation results show that greater transmission loss hence noise reduction is affected significantly by the expansion of muffler chamber length and diameter. Modification of the muffler chamber using plywood and the tailpipe on both ME ON Generator ON and ME OFF Generator ON conditions respectively reduce the noise approximately by 24.94 dB and 10.50 dB.
CONTENTS
Get PDFContents of International Journal of Offshore and Coastal Engineering Vol 4, No 1 (2020
Board of Editor
Get PDFBoard of Editor PATRON : Dean - Faculty of Civil, Environmental, Earth Sciences - ITS. Head Training Center Management & Functional Position - Ministry of PWPH. RESPONSIBLE : Head of Department – Civil Engineering Department - ITSBOARD OF EDITOR Chief Editor : Ria Asih Aryani Soemitro ITS, Indonesia h-index (GS = 10)Founding Editor : Hitapriya Suprayitno ITS, Indonesia h-index (GS = 9) Managing Editor : Trihanyndio Rendy Satrya ITS, Indonesia h-index (GS = 2) Mahendra Andiek Maulana ITS, Indonesia h-index (GS = 2)Editor : Data Iranata ITS, Indonesia h-index (GS =3) Alex Abdi Chalik PUPR, Indonesia h-index (GS = -) Danang Parikesit UGM, Indonesia h-index (GS = 8) Achmad Wicaksono UB, Indonesia h-index (GS= 9) Maimunah Sapri UTM, Malaysia h-index (GS = 16) Wahyu Caesarendra UBS, Brunei Dar es Salam h-index (GS = 19) Address : Editor JIFAM – Room J - 201 Departement of Civil Engineering Institut Teknologi Sepuluh Nopember ITS Campus, Sukolilo, Surabaya 60111 Email : [email protected] Website: https://iptek.its.ac.id/index.php/jifam Reviewer for this EditionRia Asih Aryani Soemitro, Insitut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia.Hitapriya Suprayitno, Insitut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia.Mahendra Andik Maulana, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia.Trihanyndio Rendy Satrya, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, IndonesiaJanuarti Jaya Eka Putri, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia.Akhmad Wicaksono, Universitas Brawijaya (UB), Malang, Indonesia
Peri-urban Transformation in West Bandung Regency A Physical, Social, and Economic Analysis
Get PDFPeri-urban zone shared a similar yet unique characteristic of its city-like environment. Situated right in a transition zone between rural and urban marked by urban pattern of population density, diverse activities, and intense spatial relations in a regional complementary dimension, West Bandung Regency is one of peri-urban zone surrounding Bandung City within Bandung Metropolitan Area. West Bandung Regency plays a significant role in driving socio-economic dynamics of the city. Likewise, Bandung City shaped transformations of its peri-urban areas, such as the transition of rural agrarian nature into settlement-dominated urban area. Therefore, this research is done to examine the transformation of West Bandung Regency peri-urban area, under the four peri-urban types; (1) Urban Fringe Zone, (2) Rural Urban Fringe Zone, (3) Urban Rural Fringe Zone, and (4) Rural Fringe Zone. This research implement spatial analysis technique using GIS tool of weighted overlay. Result of this study shows typological transformation of each sub-districts that has the peri-urban characteristic within 10 years (2009 and 2019). Out of seven sub-districts in West Bandung Regency; Batujajar, Padalarang, Ngamprah, Cisarua, Parongpong, Lembang, and Cihampelas, there has been transformation of previously seven urban rural fringe in 2010 to four urban fringe zone and three urban rural urban fringe zone in 2020. Analysis on peri-urban typology is carried under analysis on physical, social, and economic aspect of each sub-districts
Prototype pre-Class Website Development as an Improvement of Java Language Learning in SMK
Get PDFThis study aims to produce a website as enrichment for Javanese learning material in vocational schools. This study uses the Research and Development (R&D) research method. The results of this study consisted of three discussions, namely the needs of teachers and students for material enrichment, enrichment of website prototypes, and the results of pre-class website prototype validation tests as enrichment of Javanese learning in vocational schools. Questionnaires for teacher and student needs were used to construct a prototype "pre-class" enrichment site. The developed prototype of the enrichment website is categorized into four main sections, namely homepage, about me, enrichment, digital library, and contacts. The homepage contains an introduction, developer profile, and buttons for enrichment pages and digital libraries. The about me section contains a website developer biography. The enrichment section contains enrichment material for Javanese learning materials for Javanese speech levels. The digital library section contains digital e-books as supporting material for learning Javanese. The contact section contains a form that can be used to contact the developer. Based on the assessment conducted by website and book experts, this website can attract students' interest to learn Javanese independentl