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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 410 Documents
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PENDETEKSI LEVEL FLUIDA MENGGUNAKAN METODE FLOAT MAGNETIC LEVEL GAUGE BERBASIS HUMAN MACHINE INTERFACE (HMI) Miranty Miranty; Fahrul Fahrul; Agus Salim Opu
Jurnal Poli-Teknologi Vol. 18 No. 2 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i2.1442

Abstract

ABSTRACTIn this present technology era, human needs of the intelligent equipment systems that automatically do all task itself, are increased. For designing that equipment, a component that can calculate, remember, and also make a decision is required. Computer has that ability, but only using computer for this purpose is not efficient. So we use the computer with a microcontroller.By using Float Magnetic Level gauge method in microcontroller, fluids level can be detector by a magnet system that can float as triggers of reed switch based on level change of fluids.The result is level in percent unit and it is displayed on interface that named Human Machine Interface in real time. Measurement on fluid level sensor is when the sensor floating in minimum level, it will give 4 mA value as the signal output. And then when the sensor floating in maximum level, it will give 20mA value as the signal output. That value is the standard value for sensor signal output in industry. After converting the value of signal ouput current to voltage value, it found out that the level sencor has 98% accurancy.Keyword: Measurement, Level, Fluids, Human Machine Interface, 4–20mAABSTRAKPada era teknologi saat ini, kebutuhan manusia terhadap sistem peralatan cerdas yang dapat melakukan pekerjaan sendiri secara otomatis semakin meningkat. Oleh karena itu untuk merancang sistem peralatan tesebut, dibutuhkan sebuah sistem yang dapat menghitung, mengingat, dan mengambil keputusan. Komputer memiliki kemampuan tersebut, namun masih kurang efisien jika hanya menggunakan computer untuk keperluan tersebut. Oleh karena itu computer dapat dikombinasikan dengan mikrokontroler.Menggunakan metode Float Magnetic Level Gauge pada mikrokontroler, ketinggian fluida dapat dideteksi dengan sistem magnet yang dapat mengapung sebagai pengaktif saklar reed switch berdasarkan perubahan level permukaan fluida.Hasil pengukuran berupa level dalam satuan persen ditampilkan dalam sebuah sistem interface dengan tampilan animasi yang disebut Human Machine Interface (HMI) secara realtime. Hasil pengukuran driver sensor level saat kondisi fluida pada kondisi minimum adalah 4 mA, dan pada kondisi fluida berada pada kondisi level maksimum adalah 20 mA. Nilai tersebut sesuai dengan standar sinyal output sensor yang digunakan pada sistem instrumentasi industri. Setelah melakukan konversi hasil pengukuran arus menjadi tegangan, diperoleh tingkat ketelitian sensor sebesar 98%.Kata kunci: Pengukuran, Level, Fluida, Human Machine Interface, 4–20mA
RANCANG BANGUN TONGKAT BANTU PENDETEKSI PENGHALANG, AIR, DAN LOKASI TUNANETRA Benny Benny; Ahya Radhiatul Kamila; Teguh Tri Sugiono
Jurnal Poli-Teknologi Vol. 18 No. 2 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i2.1443

Abstract

ABSTRACTVisually impaired is a general term used for the condition of someone who is experiencing a disorder / obstacle in his sense of sight. Barriers that are often experienced by blind people are to determine the object infront of him, puddles, and location. Blind people’s obstacles in determining their location caused their family’s anxiety. For now, the obstacles experienced by blind people when in public places have not been fully resolved. This tool is made to help the visually impaired (stick users) in order to know the presence of obstructions, puddles, and nlind people’s location. For this purpose, the stick is installed with a Soil Moisture Sensor as a water detector, SRF04 Ultrasonic Sensor as a barrier detector, and a GPS tracker as a location detector. This blind assistive stick is equipped with a Limit Switch which is useful as a power saver for barrier and water detection systems. When the auxiliary stick is not being used, the limit switch will not get the pressure from the stick will be OFF.Keywords: GPS Tracker, Limit Switch, ATMega328, Modul Sim800l, Blind People, SRF04, Soil Moisture SensorABSTRAKTunanetra adalah istilah umum yang digunakan untuk kondisi seseorang yang mengalami gangguan/hambatan dalam indra penglihatannya.. Hambatan yang sering dialami tunanetra diantaranya adalah hambatan dalam menentukan keberadaan penghalang, genangan air, dan lokasi. Hambatan tunanetra dalam menentukan lokasi menimbulkan kekhawatiran bagi keluarga tunanetra dalam mengetahui keberadaannya. Untuk saat ini, hambatan yang dialami oleh tunanetra ketika berada di tempat umum belum seluruhnya dapat terselesaikan. Alat ini dibuat untuk membantu tunanetra (pengguna tongkat) agar dapat mengetahui keberadaan penghalang, air, dan lokasi tunanetra. Untuk tujuan tersebut maka pada tongkat dipasang Soil Moisture Sensor sebagai pendeteksi air, Sensor Ultrasonik SRF04 sebagai pendeteksi penghalang, dan GPS tracker sebagai pendeteksi lokasi. Tongkat bantu tunanetra ini juga dilengkapi dengan Limit Switch yang berguna sebagai penghemat daya sistem pendeteksi penghalang dan air. Ketika tongkat bantu tidak sedang digunakan, limit switch tidak akan mendapat tekanan sehingga daya dari tongkat akan berada pada kondisi OFF.Kata kunci : GPS Tracker, Limit Switch, ATMega328, Modul Sim800l, Tunanetra, , SRF04, Soil Moisture Sensor
Cover Politeknologi Vol 18 No 3 September 2019 Tim Editor Tim Editor
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2330

Abstract

Daftar Isi Politeknologi Vol. 18 No. 3 September 2019 Tim Editor Tim Editor
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2331

Abstract

IMPLEMENTASI SENSOR MEMS AKSELEROMETER SEBAGAI ALAT PENGUKUR GETARAN PADA TURBIN ANGIN Fajar Aswin; Zaldy Sirwansyah Suzen
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2340

Abstract

Many techniques are available in the market to measure and analyze vibrations caused by rotating machines and the structure of the machine itself, but require expensive resources to identify the problem of damage. Generally these expensive equipment use conventional sensors such as eddy-current sensors, swing coil velocity sensors and piezoelectric transducer sensors to measure vibration. The implementation of a vibration measuring device in the form of an accelerometer sensor with a type of Micro Electro Mechanical System (MEMS) and a signal processing unit (Arduino Mega microcontroller) is used to measure vibrations that occur in small-scale horizontal type wind turbine blades. Experiments were carried out to check the accelerometer's ability to detect vibration response on wind turbine blades with the free vibration position. Then the signal in the form of the time domain will be converted into the frequency domain to get the dominant frequency value of the turbine blade, which is then analyzed to be compared with the B & K VibroPort 80 vibration meter. The experimental results show that the MEMS type accelerometer sensor can be applied to measure the free vibration conditions on wind turbine blades with an error percentage below 6%.
ANALISA VARIASI KUAT ARUS ELEKTRODA E6013 TERHADAP SAMBUNGAN LAS PADA PELAT BAJA UNTUK TABUNG GAS 3 KG Rosidi Rosidi; Budi Yuwono; Darius Yuhas
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2341

Abstract

The quality of the welding results is influenced by the qualified welder, the appropriate type of connection, the type of welding, and the electrode. Standard electrode AWS E 6013 with trademark Nikko Steel Welding Elektodes, NK 68 with φ 2.6 mm. The type of camp used is SNI standard 1452-2007 for 3 kg LPG tube. Specimens were subjected to tensile testing, impact toughness, hardness testing, curvature testing, microstructure with current variations of 50 A and 70 A of both types of electrodes used. Welding by SMAW method with circular welding at 3 kg of gas tube blank from JIS G 3116 SG 295 materials. From the test result will be known maximum tensile strength, impact toughness, hardness, curve strength, macro and microstructure. And by comparing the samples of SNI, non SNI and samples from both types of Nikko Steel and NK 68 electrodes, there are differences in mechanical and microstructure characteristics that will significantly affect the toughness of the welding results. 
RANCANG BANGUN SISTEM REM MOBIL LISTRIK FUSENA Fauzan Ilham Maulana; Noorsakti Wahyudi; Indah Puspitasari
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2342

Abstract

The brake system is a device to slow down or stop the movement of the wheel automatically so that the vehicle will move slowly. This completeness in the vehicle is very important and vital because it functions as a safety for life in driving. In the process of making the Electric Car Fusena brake system has steps in the process, consists of size planning, materials used, designs realized, manufacturing brake system supporting components, assembly, installation and testing of brake systems. The Fusena Electric Car brake system use a disc-type hydraulic brake system with one brake master that can work simultaneous with dual circuit fluids (front and rear braking). The comparison of the brake pedal is changed to 3: 1, designing and recreating the caliper stand to make it more precise so that it gets maximum brake performance and is better than the system used before. Static testing of the Fusena Electric Car hydraulic brake system is done by positioning the vehicle on an inclined plane at a slope of 15 and 20 with a variable driver load of 40 kg, 50 kg, 60 kg and 70 kg. The test results are that the vehicle does not experience displacement or movement. And the results of the average dynamic test of the Brake System at a speed of 27.3 km/h with an average braking distance of 171 cm = 1.71 meters and the average deceleration time is 0.26 seconds.
EFISIENSI DENGAN KONVERSI SATUAN HARGA TINTA RP/GRAM MENJADI RP/SHEET PADA TINTA FLEKSO Endang Yuniarti; Risya Kusna Putri
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2345

Abstract

There agreement between ink companies and printing companies that is the ink company will supply printing ink according to the needs of the printing company and if there is excess ink, it will be requested. Ink returns according to company data reach 50 to 80%. The problem that arises is the problem of ink that will become junk, and the impact is inefficiency. The purpose of this study is to test the selling price unit of RP/KG ink to become RP/Sheet. The method used in this study is the calculation of BM area using Automatic Cad and is calculated using ink in gr/m2 units which is then used to be gr/sheet units and converted again to the unit price, which is Rp/sheet. The object of research is KKG instant noodles. This research resulted in the conversion of black and white price units used in this instant noodle product with units of Rp/gr indicating a more expensive price of Rp.49,806 per gram while with units of Rp/sheet of Rp17,34 per sheet. So by using units of Rp/sheet, give the ink company to estimate when sending ink so that it can be minimized from printing companies.
VARIASI TEMPERATUR TERHADAP PERUBAHAN NILAI KEKUATAN SEAL PADA MATERIAL KEMASAN LENTUR MULTI LAYER PET-ALU FOIL-LDPE Emmidia Djonaedi; Diyah Ayu; Dini Handayani
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2346

Abstract

Plastic is common flexible material for packaging. One of common combination multilayer material are PET-ALU FOIL-LDPE. Multiplayer packaging through some step. Last steps is bag making. Bag making was processed with sealing inner plastic material in certain position with heat. Transverse direction (TD) for horizontal seal and Machine Direction (MD) for horizontal seal. The aim to gain a good seal strength is to avoid broken while filling process. Some factors that affect seal strength are temperature, time and pressure of sealing process. This research focus on seal strength value while temperature changed. Temperature starts from 140C to 240C with interval 20C. This experiment gained two optimum temperature and seal strength for TD and MD. Seal strength TD is 31 N/mm at 180C and seal strength 34 N/15mm at 160C for MD.
PENGEMBANGAN PERANGKAT PEMBELAJARAN BERBASIS COURSELAB PADA PRINSIP KERJA ENGINE BIDANG KEAHLIAN KENDARAAN RINGAN Imam Wahyudi; Fitri Wijayanti
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2347

Abstract

Development research focused on developing Courselab-based learning aids on the principle of Light Vehicle Engine Expertise which includes Student Books, Student Activity Sheets and Lesson Plans for grade XI SMK students. The model of development used in this research refers to the model of learning aids development of Dick & Carey which consists of three phases, namely (1) identification phase; at this stage the writing of goals and analysis of instructional learning is conducted, identifying initial behaviors and characteristics of the students, (2) development phase; at this stage the Courselab-based learning tools is developed by formulating the goals and the standard reference tests, as well as developing the strategies and the learning aids, (3) testing and evaluation phase. The developed Courselab-based learning aids has been validated by two experts with revision to obtain a result which is fit to use. The tests carried out in three stages, namely one-on-one testing, small group testing conducted at SMK Nasional Makassar to evaluate the practicality of the learning aids and limited testing conducted at SMK Darussalam Makassar to evaluate the practicality and the effectiveness of the learning aids. The research results show that the developed learning aids, after the validation, was declared valid. The learning aids is attributed practical as the students responded positively to the learning aids they used. The learning aids is considered effective as the students responded positively to the learning aids used. It has met the criteria of effectiveness, with the results: (1) student activities have met the predetermined tolerance limits, (2) the teacher activities have fulfilled the observed aspects, and (3) the student learning outcomes on the working engine principle materials have achieved completeness.

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