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All Journal Theorems (The Original Research of Mathematics) KURVATEK Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Iyus Rusmana
Institut Teknologi Nasional Yogyakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Kursi Roda Elektrik dengan Kendali Gestur Kepala Tiar Prilian; Iyus Rusmana; Trie Handayani
Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Vol 3, No 1 (2021): February
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v3i1.830

Abstract

A wheelchair is a tool that can be used to mobilize patients who experience paralysis, especially paralysis in the legs, so they can move from one place to another independently. An electric wheelchair is a type of wheelchair that can be controlled by a patient without having to be controlled by another person. The design of this tool utilizes an ADXL335 accelerometer sensor mounted on the patient's head as a determinant of the direction of wheelchair movement, BTS7960 as a DC motor driver, a motor wiper as the main drive for a wheelchair, and the Atmega328P microcontroller as an input and output processor. Gestures of the patient's head (looking down, looking up, head tilted to the right, tilting left) will produce a different voltage output which will be processed by Atmega328P as a determinant of the direction of motion which will be sent to the BTS790 driver to drive the wiper motor as the main driver of the wheelchair. The method of testing and measurement carried out by testing the response of the ADXL335 accelerometer sensor, with the test results of the ADXL335 accelerometer sensor having an accuracy of determining the direction of motion of 100%. The results of head gesture control testing the average wheelchair speed of 2.3 km / hour with a patient weight of 40-60 kg, and the test results of battery endurance in a wheelchair of 5.07 hours with a patient weight of 40-70 kg with a 12V18Ah battery.
MEREDUKSI KECELAKAAN LISTRIK DAN PENINGKATAN EFISIENSI ENERGI LISTRIK PADA GEDUNG PERKANTORAN TUA MELALUI RETROFITTING Iyus Rusmana
KURVATEK Vol 1 No 1 (2016): April 2016
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v1i1.220

Abstract

AbstrakKebakaran pada gedung perkantoran sering kali disebabkan oleh kecelakaan listrik, terutama gedung tinggi yang rata-rata berusia lebih dari 20 tahun. Hal tersebut merupakan akibat dari perubahan fungsi ruang yang tidak diimbangi dengan penyesuaian instalasi listrik yang memadai. Di samping itu, minimnya pemeliharaan turut serta memperburuk keamanan dan kualitas daya guna listrik. Untuk mengatasi hal tersebut, salah satu upaya  yang dapat dilakukan adalah dengan cara retrofitting. Penelitian dilakukan melalui survey pengukuran dan observasi visual pada gedung perkantoran di Jakarta. Setelah dilakukan retrofitting dari hasil analisis data, dapat ditunjukan bahwa konsumsi energi pada beban puncak dapat dihemat sampai dengan 27%. Sedangkan resiko kecelakaan listrik dapat ditekan serendah-rendahnya dengan memperbaiki sistem instalasinyaKata kunci : Retrofitting, Kecelakaan Listrik, Efisiensi  AbstractFire case in office buildings mostly occurs by some electrical accidents; especially it happens in most multi-storey building with twenty years old or more. It caused by some altering room function without any proper electrical installation adjustment. Moreover, less-maintenance issue made its installation quality, electrical safety and efficiency getting worse. Those issues can generates some electrical hazard risks, and also turns out of abundant energy consumption. These problems can be resolved by retrofitting. The research was conducted in Jakarta by measuring survey and visual identification. According to the data analysis, retrofitting can reduce about 27% building power consumption at peak load and it can avoid any electrical hazards.Key words : retrofitting, electrical hazard, efficiency
CONTEXTUAL, CONCEPTUAL, AND PROCEDURAL KNOWLEDGE OF VOCATIONAL HIGH SCHOOL STUDENTS IN SOLVING DISTANCE CONTEXTS Ai Tusi Fatimah; Nur Eva Zakiah; Yoni Sunaryo; Irfan Gumilar; Iyus Rusmana
Jurnal THEOREMS (The Original Research of Mathematics) Vol 4, No 2 (2020)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (574.278 KB) | DOI: 10.31949/th.v4i2.1592

Abstract

This study aims to describe the contextual, conceptual, and procedural mathematical knowledge of vocational students in solving mathematical tasks presented in the context of distance. This study used a qualitative approach by focusing on data collection techniques through interviews and observations. Participants involved in this study were 20 students of  Vocational High School, Motorcycle engineering and business expertise, in Ciamis, Indonesia. Students solve the mathematical tasks on topics of equality and inequality of absolute values in the context of distance. The analysis is carried out on contextual, conceptual, and procedural knowledge by students. The results show that students who can connect contextual knowledge to their conceptual knowledge successfully solve mathematical tasks. This shows that contextual knowledge has the first role in determining the mathematical concepts needed in solving tasks, which are supported by procedural knowledge that will lead students to get the right solution.
SISTEM PENDEKTEKSI GAS CO RUANG PARKIR DI BASEMENT BERBASIS IOT Iyus Rusmana; Sudiana
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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

Abstract

Parking spaces located in malls or in tall buildings if the ground conditions are not wide enough, usually placed in basement spaces. There are many drawbacks that can be found from this condition, especially in terms of air exchange in the basement area. The air exchange must be designed in such a way that the air condition remains fresh. In this study, CO gas levels were detected by Gas sergeant MQ7. From this sensor with various stages initiating the Air Fan to enter fresh air, initiating the Exhaust Fan, initiating the communication system. The communication system, both buzzer and related party communication, is carried out after the MQ7 gas sensor approaches a predetermined threshold. Because if humans resemble high levels of CO gas, the risk is death. CO gas is a type of hazardous / poisonous gas. The effect of carbon monoxide gas for levels of 50 ppm is still relatively safe, while more than that it can cause harmful effects to the body. If in small amounts, inhaling CO can cause headaches, dizziness, lightheadedness, weakness and nausea. The air exchange system is designed in such a way that the energy consumed is more efficient. To be able to activate the sensor to remove CO gas and enter fresh air is easier automatically with the IOT system Keyword: CO gas, buzzer, MQ7 gas sensor, IOT System
Co-Authors Fatimah, Ai Tusi Irfan Gumilar Sudiana Tiar Prilian Trie Handayani, Trie Yoni Sunaryo