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INDONESIA
JURNAL POLI-TEKNOLOGI
Published by Politeknik Negeri Jakarta
ISSN : 14122782     EISSN : 24079103     DOI : https://doi.org/10.32722/pt.v20i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
Poli-Teknologi Journal is a journal, which began publication in 2002, published by the Research and community service Unit of Politeknik Negeri Jakarta. It starts from Volume 1 Number 1 in January 2022 for printed version; ISSN (print) 1412-2782 and ISSN (online) 2407-9103. Poli-Teknologi Journal is a series of scientific publications in applied science and technology area from the perspective of a multi and interdisciplinary studies and it is published 3 times in year.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol. 21 No. 2 (2022)" : 5 Documents clear
SISTEM BANTUAN KEMUDI KENDARAAN ALAT BERAT JARAK JAUH Sonki Prasetya
Jurnal Poli-Teknologi Vol. 21 No. 2 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i2.4066

Abstract

Heavy equipment vehicles for transporting goods such as forklifts are often used to assist human activities. These electric-based devices use batteries as their energy storage. Technological developments, especially in the field of control and the effects of the COVID-19 pandemic, make it possible for this tool to be driven remotely. However, remote control sometimes makes it difficult for operators to respond quickly to driving. The data shows that the use of heavy equipment causes many accidents in the work environment, mainly due to human factors, especially fatigue. To overcome this, several systems were added to help reduce work accidents. One of the tools that can help the driver is a braking system with Advanced Driver Assistance Systems (ADAS). This system aims to assist the braking system, especially when the driver is negligent. Utilization of a stereo camera to recognize objects in front of the vehicle so that it can brake automatically. The economical stereo camera using the Kinect is designed for its application to indoor moving applications. Recognition and classification of objects using the Artificial Neural Network Detection method with this tool will make the system give a braking signal to the vehicle automatically. The test results show that braking can process data at a speed of less than 350 milliseconds with an average accuracy of above 90%.
KAJIAN PENGARUH KEBISINGAN PROYEK KONSTRUKSI TERHADAP KENYAMANAN WARGA PERMUKIMAN SEKITAR Atma Noor Fitria; Wahyuni Susilowati; Jonathan Saputra
Jurnal Poli-Teknologi Vol. 21 No. 2 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i2.4141

Abstract

In the construction development process, activities such as clashes between work tools, formwork work, casting, and the use of heavy equipment have the potential to cause noise to the area around the project. This study examines the noise impact of Project X which is located close to a residential area. Noise is defined as sound that arises and is not desired but can interfere with health and comfort in the environment. This study aims to examine the effect of noise on the comfort of residents of surrounding settlements. The data were obtained by observation method, measurement with sound level meter, and questionnaire. This research refers to the Decree of the Governor of DKI Jakarta No. 551 of 2001, while the measurement method is adjusted to the Decree of the Minister of the Environment No. 48 of 1996. The results showed that most of the noise measurements exceeded the noise quality standard up to 68.45 dB(A). Simple regression analysis gives the regression equation Y = 30.811 – 0.445X, meaning that project noise has a negative effect on the comfort of residents. Hypothesis testing supports the results of simple linear regression by concluding that project noise has a significant negative effect on the comfort of residents.
EFEK KENAIKAN SUHU DAPUR INDUKSI ELEKTROMAGNETIK ALTERNATOR TERHADAP PERUBAHAN RESISTANSI LILITAN STATOR Parlindungan Pandapotan Marpaung
Jurnal Poli-Teknologi Vol. 21 No. 2 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i2.4506

Abstract

In this study, the design of the ac power plant equipment using an alternator derived from a motorcycle was carried out to produce an ac output voltage in the stator coil winding based on the electromagnetic induction process. The problem is that the ac output voltage flows rotary current or eddy current through the coil windings causing heat in the core plane which is in the alternator electromagnetic induction furnace. The initial condition of the electromagnetic induction alternator temperature is Tind(awal) = 30 oC, coil resistance Rt(awal) = 1.28 ohms and ac output voltage Vo(awal) = 12.68 volts. The research method was carried out by increasing the Tind parameter initial causing the effect of increasing the resistance of the conductor coil winding material as the output voltage decreased. The specification of the temperature coefficient of the coil conducting conductor is 0.0291 oC-1 the temperature increase of the electromagnetic induction alternator is Tind. 62 oC causes the effect of increasing the coil resistance as the output voltage decreases to Vo(temp.) = 7.68 volts ac. This decrease in the ac output voltage of the alternator causes the electricity supply to the automotive electrical load to become ineffective and inefficient. Keywords: alternator ; electromagnetic induction ; coil windin ; temperature coefficient ; initial conditions
Analisis Investasi dan Penetapan Harga Jual Rumah Berbasis Hibrid Markup - Internal Rate of Return Jojok Widodo
Jurnal Poli-Teknologi Vol. 21 No. 2 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i2.4552

Abstract

The increase in population from year to year can affect consumers' number of housing requests. It is an opportunity for investors to conduct investment business in housing projects. But on the other hand, many investors suffer losses from this business due to errors in determining the value of the product price. Therefore, it is necessary to determine the product price and analyze its investment feasibility. The method used in this research is the hybrid mark-up and the Internal Rate of Return (IRR). The mark-up is used to determine the housing products price through Cost Plus Pricing analysis, while investment analysis of the pricing uses IRR. This analysis is implemented in the case study used in Cempaka Village Housing research to produce a real analysis. The results show that the mark-up method using cost-plus pricing can be applied to determine the product price in the housing estate to get a decent profit. The mark-up value that produces a decent profit is 40%, and the selling price according to the types 24/60, 47/72, and 50/72 is Rp 143.550.159, Rp 234.406.509 dan Rp 277.720.507, respectively. The impact of the price-fixing generates several cash flows that can be analyzed using the IRR to determine the feasibility of the investment. The investment analysis results are NPV Rp 1,688,203,568, IRR 13.82%, and PP of almost 12 months. The output of this study also produces a linear regression equation that can be used to predict the IRR value based on the set mark-up value. The resulting linear regression equation is Y = 0,3327 X + 0,0249 with the value of the mark-up effect on the IRR of 92%.
RANCANG BANGUN PEMUTUS ALIRAN LISTRIK SISTEM TEGANGAN RENDAH BERBASIS INTERNET OF THINGS (IoT) PADA DAERAH BANJIR Ajeng Bening Kusumaningyas
Jurnal Poli-Teknologi Vol. 21 No. 2 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i2.4724

Abstract

Floods are a frequent disaster and the danger from electricity is something that needs to be considered during a flood. Design the low-voltage system power breaker based on the Internet of Things (IoT) in this flooded area is a detection device that is connected to the internet, so it can detect if there is a water level rising remotely using a smartphone. This tool works by using the Ultrasonic sensor HC-SR04 to detect the water level that has risen and a microcontroller to process the data, disconnect the MCCB and display it in the smartphone system remotely. The Ultrasonic HC-SR04 sensor can measure a distance of 2cm to 450 cm from the sensor. To make this system, it requires a microcontroller communication, namely the MCU Node which is equipped with a Wi-Fi ESP 8266 module as a master which functions to receive data with a distance of centimeters and a button to disconnect the MCCB to the Blynk application on the smartphone. Water level data and data graphs can be viewed directly on the Blynk interface and the data recap can be sent to a spreadsheet. However, there is some delay when the sensor works because the process of sending data to the spreadsheet only takes a few seconds and does not interfere with the performance of the Internet of Things (IoT) based low-voltage system power breaker in flooded areas. Key words : Blynk, ESP 8266, Water Level

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