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Jurnal Ilmiah Teknik Elektro

jetri
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Published by Universitas Trisakti

ISSN : 2541089X EISSN : 2541089X DOI : https://doi.org/10.25105/jetri

Core Subject : Science, Engineering,

Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy

Jetri is a scientific journal aims to publish high quality and up to date articles in electrical engineering field. Its scope includes (but not limited to): - Power Systems: nonrenewable and renewable energy power generation, power transmission and distribution, power conversion, protection system, electrical material, power system analysis, etc. - Telecommunications: modulation and signal processing for telecommunication, antenna and wave propagation, wireless and mobile communications, radar, satellite, communication network and systems, etc. - Control Systems: optimal controls, adaptive controls, non linear and stochastic controls, modeling and simulation, robotics, optimization, intelligent systems, fuzzy logic, etc. - Electronics: electronic materials, electronics system, microelectronic devices and system, VLSI, ASIC, system-on-a-chip (SoC), electronic instrumentations, medical electronics and instrumentation, etc. Computer Systems/Informatics: computer architecture, parallel processing, computer network, embedded system, human-computer interaction, virtual reality, computer security, machine learning and data mining, software

Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)

Articles 174 Documents

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Sistem Brankas Menggunakan Pengenalan Wajah Berbasis Raspberry PiI Nikko Prasetyo; Ferrianto Gozali; Endang Djuana; Richard Rambung
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 19, Nomor 1, Agustus 2021
Publisher : Website

The human face can be used for face recognition in order to increase the level of security of a safe deposit box because every person has his/her facial characteristics that have similarities with one another. One of the tasks for face recognition is to compare the face in real-time to the ones in the dataset so that the owner can be verified. This final project aims to implement face recognition based using Raspberry Pi to increase the level of security of the safe deposit box system design. This study uses the Raspberry Pi 3B+ because it has sufficient processing capabilities and has a few pre-built modules that make researching this less difficult. Raspberry Pi uses Linux as the operating system, which has access to a large number of libraries and applications compatible with it [1]. Of the many methods used for face detection, in this final project the Viola-Jones method is being used. From the result of this research, the success rate that was obtained is 60%. This number was obtained after 40 trials, the system was able to detect as much as 24 times [2]. The final results shows that the light intensity greatly affects the performance of the system. The light intensity of 8 Lux has an accuracy rate of 30%, while the 40 Lux has an accuracy rate of 90%.Wajah manusia dapat digunakan dalam pengenalan wajah untuk meningkatkan keamanan brankas karena setiap manusia memiliki fitur-fitur wajah yang berbeda-beda. Salah satu tugas dari pengenalan wajah adalah membandingkan wajah pada citra foto dengan wajah yang telah disimpan di dataset, agar identitas pemilik wajah dapat diketahui. Makalah ini mengimplementasikan pengenalan wajah berbasis Raspberry Pi pada sistem brankas untuk meningkatkan keamanan brankas. Penelitian ini menggunakan Raspberry Pi dikarenakan memiliki kemampuan pemrosesan yang cukup dan memiliki modul yang mempermudah implementasi. Raspberry Pi menggunakan Linux sebagai sistem operasi, yang memiliki akses ke sejumlah besar perpustakaan dan aplikasi yang kompatibel. Dari sekian banyak metode yang telah diaplikasikan untuk deteksi wajah, metode yang dipakai untuk penelitian ini adalah metode Viola Jones. Dari hasil penelitian ini, diperoleh nilai keberhasilan sebesar 60%. Nilai ini diperoleh setelah melakukan percobaan sebanyak 40 kali, dengan keberhasilan deteksi oleh sistem sebanyak 24 kali. Hasil akhir menunjukkan bahwa intensitas cahaya sangat mempengaruhi peforma dari sistem. Ketika intensitas cahaya bernilai 8 Lux didapatkan tingkat akurasi sebesar 30 %, sedangkan ketika intensitas cahaya bernilai 40 Lux maka didapatkan tingkat akurasi sebesar 90%.

Perancangan Prototipe Alat Pengurai Asap Rokok Menggunakan Electrostatic Precipitator Emilia Roza; Yogi Sugiharto; Rosalina Rosalina
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 19, Nomor 2, Februari 2022
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One of the causes of poor air quality is the high number of smokers in Indonesia. A smoking room in public places equipped with cigarette smoke decomposers is important. The purpose of this study was to determine the ratio of the percentage decomposition of smoke levels in tests using and without using ESP. The tool is made to be able to monitor air quality based on ISPU using an MQ2 sensor with an output in the form of a blower that functions to direct smoke out of the room, then the smoke will be processed into clean air using an electrostatic precipitator (ESP). The simulation results show that by using ESP (electrostatic precipitator) the smoke content can be decomposed up to 92.867%, while without ESP, it is not more than 5% so that it can pollute the environment around the smoking room. Salah satu penyebab buruknya kualitas udara adalah tingginya jumlah perokok di Indonesia. Adanya smoking room di tempat umum yang dilengkapi dengan alat pengurai asap rokok menjadi penting. Adapun tujuan dari penelitian ini adalah menentukan perbandingan persentase penguraian kadar asap pada pengujian menggunakan dan tanpa menggunakan ESP. Alat dibuat agar dapat memantau kualitas udara bersadarkan ISPU menggunakan sensor MQ2 dengan output berupa blower yang berfungsi mengarahkan asap keluar ruangan, selanjutnya asap akan diolah menjadi udara bersih menggunakan electrostatic precipitator (ESP). Hasil simulasi menunjukkan bahwa dengan menggunakan ESP (electrostatic precipitator) kadar asap dapat terurai hingga 92,867%, sedangkan tanpa ESP, tidak lebih dari 5% sehingga dapat mencemari lingkungan sekitar smoking room.

Implementasi Charger HP dengan Panel Surya Suwarno Suwarno; Muhammad Fitra Zambak
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 19, Nomor 2, Februari 2022
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Abstract This paper provides a solution for charging cell phones (HP) using solar panels. The need for electrical energy consumption is increasing, so renewable energy sources are needed that must meet the requirements, namely to produce energy that is environmentally friendly, at economical costs. The use of solar panels is a wise thing for current conditions as an alternative energy source to be used as a source of charging cell phones (mobile phones). The use of solar panels as a source of electrical energy to facilitate battery charging when outdoors or when there is no other power source. In this study, a solar panel of 10 Wp, 21V dc is used as a power source and a buck converter as a voltage reducer from 12V to charge a 6V, 4500 mAh battery. The number of cellphones that use this battery charger is 4, while observations when charging cellphones are in the form of battery percentage from 50% to 100% with a charging time of 1 hour 30 minutes. Makalah ini memberikan suatu solusi untuk mengisi batere Handphone (HP) menggunakan panel surya. Kebutuhan akan konsumsi energi listrik semakin meningkat, maka diperlukan sumber energi terbarukan yang harus memenuhi syarat untuk menghasilkan energi yang ramah lingkungan, biaya ekonomis. Penggunaan panel surya merupakan hal yang bijak untuk kondisi saat ini sebagai sumber energi alternative untuk dimanfaatkan sebagai sumber pengisian batere telepon seluler (handphone). Penggunaan panel surya sebagai sumber energi listrik untuk memudahkan pengisian batere saat berada di luar ruangan atau saat tidak ada sumber listrik lainnya. Pada penelitian ini menggunakan panel surya 10 Wp, 21V dc yang berfungsi sebagai sumber listrik dan buck converter sebagai penurun tegangan dari 12V untuk mengisi batere 6V, 4500 mAh. Jumlah handphone yang menggunakan sumber pengisi batere ini sebanyak 4, sedangkan pengamatan saat pengisian batere HP berupa persentasi batere dari 50% ke 100% dengan waktu pengisian 1 jam 30 menit.

Sistem Pemantau dan Kendali Tekanan Gas SF6 PMT Gardu Induk Melalui IoT Rayana Jaka Surya; Gigih Priyandoko; Istiadi Istiadi
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 19, Nomor 2, Februari 2022
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The design of the monitoring system and automatic control of sulfur hexafluoride gas pressure on the power breaker, is carried out using several components. NodeMCU ESP8266 microcontroller with MPX5700AP air pressure sensor and internet of things device. This system is made to maintain gas pressure on the leaking power breaker due to certain factors. The MPX5700AP air pressure sensor measures the gas pressure on the leaking power breaker with a value parameter of 0 - 2 bar. The test result of voltage output at a pressure of 0 bar is 0.8 volt DC, and for 1 bar is 1.4 volt DC. The analog voltage output is then converted into a digital value in binary form on a microcontroller. NodeMCU microcontroller is a control device equipped with a Wi-Fi module that allows users to control the system wirelessly. Digital data on microcontrollers is then sent to internet of things devices such as blynk software on mobile phones. The command on the microcontroller activates the mosfet module on or off which will open or close the gate on the gas valve solenoid according to the specified digital value data. From the results of 6 tests, there was a ratio of the difference between the output setting in the gas cylinder and the result of filling the gas pressure on the power breaker by 5.43%. Perancangan sistem pemantau dan kendali otomatis tekanan gas sulfur heksafluorida pada pemutus tenaga, dilakukan menggunakan beberapa komponen. Mikrokontroler NodeMCU ESP8266 dengan sensor tekanan udara MPX5700AP dan perangkat internet of things. Sistem ini dibuat untuk menjaga tekanan gas pada pemutus tenaga yang bocor dikarenakan faktor tertentu. Sensor tekanan udara MPX5700AP berfungsi mengukur tekanan gas pada pemutus tenaga yang bocor dengan parameter nilai 0 - 2 bar. Hasil pengujian keluaran tegangan pada tekanan 0 bar adalah 0,8 volt DC, dan untuk 1 bar adalah 1,4 volt DC. Keluaran tegangan analog kemudian diubah menjadi nilai digital dalam bentuk biner pada mikrokontroler. Mikrokontroler NodeMCU merupakan perangkat kontrol yang dilengkapi dengan modul Wi-Fi yang memungkinkan pengguna dapat mengendalikan sistem secara nirkabel. Data digital pada mikrokontroler kemudian dikirim ke perangkat internet of things seperti software blynk pada handphone. Perintah pada mikrokontroler akan mengaktifkan modul mosfet on atau off yang akan membuka atau menutup gerbang pada solenoid valve gas sesuai data nilai digital yang telah ditentukan. Dari hasil 6 kali pengujian, diperoleh perbandingan selisih antara setting output pada tabung gas dengan hasil pengisian tekanan gas pada pemutus tenaga sebesar 5,43 %.

Perancangan Sistem Alat Pengumpul Sampah Apung Otomatis AFTOR (Automatic Floating Trash Collector) Faishal Erlangga; Rosalia H. Subrata
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 19, Nomor 2, Februari 2022
Publisher : Website

Abstract With the rapid process of urbanization and growth in human population globally inflict the growth of trash production. With the growth of number along with poorly waste handling, makes this problem become a global threat that directly or indirectly endanger various aspects of life. Trash that contaminate river’s, waterways’s ecosystem in Indonesia becomes a serious problem that causes a lot of natural disasters such as flood. With the growth and development of technology and information a lot of research and innovation that address waste problem that is currently exist. One of such is device that can collect trash on the surface of the water automatically. AFToR (Automatic Floating Trash Collector) that one sole task is to picks up trash on the surface of river, that uses Light Detection and Ranging (LIDAR) Time of Flight (ToF) VL53L0X proximity sensor and a YF-S201 flow sensor; an Arduino UNO as the microcontroller, in which connected to Android smatphone via bluetooth and wi-fi connection, using HC-05 module and NodeMCU ESP8266 to control and move the actuator in which are two DC (Direct Current) Motors and one MG-996R Servo Motor.Based on the result of tests and research that has been carried out, AFToR is able to function according to the commands that was sent by a user using Android smartphone. The user sends the commands using MIT app Inventor application to the microcontroller via HC-05 bluetooth module, where then the microcontroller will moves AFToR to pick up the trash from the surface of water into the container box.Cepatnya proses urbanisasi serta pertambahan jumlah penduduk secara global mengakibatkan terjadinya peningkatan pada produksi sampah. Peningkatan jumlah yang disertai dengan buruknya penanganan sampah menjadikan sampah sebagai masalah global. Permasalahan sampah yang mencemari sungai di Indonesia merupakan masalah yang sudah serius, rusaknya ekosistem pada sungai dapat menimbulkan berbagai macam bencana alam seperti banjir. Seiring dengan perkembangan ilmu telah banyak inovasi terbaru yang dapat mengurangi permasalahan sampah. Berbagai penelitian dilakukan untuk mengatasi permasalahan tersebut, salah satunya adalah penelitian pembuatan alat pengumpul sampah otomatis AFToR (Automatic Floating Trash Collector) merupakan alat pengumpul sampah otomatis yang berfungsi untuk mengangkut sampah pada permukaan sungai. Alat ini menggunakan masukan berupa sensor jarak light detection and ranging (LIDAR) time of flight (ToF) VL53L0X dan sensor aliran YF-S201; Arduino UNO sebagai mikrokontroler yang dihubungkan ke smartphone Android melalui koneksi jaringan Bluetooth dan wi-fi dengan menggunakan modul HC-05 dan NodeMCU ESP8266 guna mengendalikan alat sehingga dapat menggerakkan Motor DC (Direct Current) dan Motor Servo MG-996R. Berdasarkan hasil penelitian yang telah dilakukan AFToR dapat berfungsi sesuai dengan perintah yang dikirimkan melalui smartphone Android. Operator dapat mengendalikan AFToR dengan menggunakan aplikasi MIT app Inventor, perintah yang dikirimkan ke mikrokontroler menggerakkan alat untuk mengangkut sampah dari permukaan air ke bak penampungan.

Analisis Penyeimbangan Beban Transformator Distribusi 400kva 20kv/400v Menggunakan Software ETAP 19.0.1 Jovan Fathin Fawwas; Syamsir Abduh; Tyas Kartika Sari
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 19, Nomor 2, Februari 2022
Publisher : Website

Research on load imbalance at the distribution transformer substation DK 256 at Perum puri garden aims to reduce the number of load imbalances and the value of electrical power losses. The research method used is the literature method, the observation method, and the interview method. Analysis and calculations to determine the value of losses using ETAP 19.0.1 simulation. From the simulation results of the 19.0.1 ETAP calculation, before the load balancing, the percentage of imbalance at the DK 256 substation was 10.93%. After load balancing, the percentage of unbalance at the DK 256 substation was reduced to 3.64%. For losses that occur in each department at the DK 256 substation after balancing the load it becomes 6.4 kW, reducing the value of losses which is 25.58%. The cost savings from balancing the load at the DK 256 substation against losses flowing to the neutral conductor is Rp. 2,324,172.00/month.Penelitian ketidakseimbangan beban pada gardu transformator distribusi DK 256 di Perum puri garden bertujuan untuk mengurangi angka ketidakseimbangan beban dan nilai losses daya listrik. Metode penelitian yang digunakan adalah metode literatur, metode observasi, dan metode wawancara. Analisis serta perhitungan untuk menentukan nilai rugi-rugi menggunakan simulasi ETAP 19.0.1. Dari hasil simulasi perhitungan ETAP 19.0.1, pada saat sebelum penyeimbangan beban, persentase ketidakseimbangan di gardu DK 256 yaitu sebesar 10,93 %. Setelah penyeimbangan beban, persentase ketidakseimbangan di gardu DK 256 berkurang menjadi 3,64%. Untuk losses yang terjadi pada setiap Jurusan di gardu DK 256 setelah penyeimbangan beban menjadi sebesar 6,4 kW, menghemat energi dari losses sebesar 25,58%. Penghematan energi dari penyeimbangan beban pada Gardu DK 256 terhadap losses yang mengalir pada penghantar netral sebesar Rp 2.324.172,00/bulan.

Portable Solar Charger System with Energy Measurement and Access Control Erwin Sitompul; Angga Febian; Antonius Suhartono
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022
Publisher : Website

The utilization of green energy is one trending issue in the current time. People try to increase the portion of energy gained from renewable sources such as wind, solar, hydro, and geothermal energy. In this paper, the authors propose a portable solar charger system (PSCS) that can be used to charge cellular devices when electricity access is not available such as during a power shutdown or when traveling to remote locations. The PSCS is made compact in two parts: the solar panel and the utility box, making the whole system easy to carry. The energy obtained from the solar panel is stored in a dry battery, with the process carefully regulated by a solar charge controller. The PSCS is equipped with passcode protection and gained energy monitor. The electric current from the battery flows to the load through a DC-DC converter and a relay only if a correct passcode is entered via a keypad. The amount of gained energy by the solar panel is monitored by measuring the voltage across the panel and the current flowing through its circuit. The functionality of the PSCS is successfully tested. Eight experiments each with a 3-hour duration are conducted on 6 different days. The amount of gained energy varies from 5.26 Wh to 9.88 Wh (1,300 mAh to 2,670 mAh), which corresponds to 14.5 % and 31.5 % of the potential average daily output energy for the location of Cikarang, Indonesia.

Penentuan Konstanta PID Sistem Kendali Satelit Sumbu X, Y, dan Z Menggunakan Metode Root Locus Muhammad Bahtiar; Mohammad Aji Saputra; Aditya Dwi Airlangga; Suraduita Mupasanta; Muhammad Mujirudin; Harry Ramza; Latifah Sarah Supian
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022
Publisher : Website

The sattelite controller can be carried out according to the orbit direction of the x, y and z axes. This control functions by determining the value of the PID constant (Proportional, Integral and Differential) through the Root Locus Method. The purpose of this study is to determine the parameters are needed by PID in controlling the LAPAN A2 Satellite using this Root Locus method. The result of P – constant on the x-axis is 31.7692, the y-axis is 38.4987 and the z-axis is 30.6559. The I – constant generated on the x-axis is 5, the y-axis is 5 and the z-axis is 5. Likewise, the D – constant generated on the x-axis is 47.2755, the y-axis is 70.2532 and the z-axis is 43.9196. All the constant values mentioned are determined based on the lowest steady state error number of 0.12% for the x-axis, 0.10% for the y-axis and 0.12% for the z-axis. The overall value is the optimum system value where the steady state error value is generated from the difference between the settling time value and the steady state value multiplied by 100% with a tolerance limit of <5%.

ANALISIS LAJU PENUAAN ISOLASI KERTAS MENGGUNAKAN ESTER BASED OIL PADA TRANSFORMATOR RAMAH LINGKUNGAN Agung Sukma Hardana; Syamsir Abduh; Tyas Kartika Sari
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022
Publisher : Website

Transformer oil function as the cooling medium and electrical insulation component in power transformer. It has to follow minimum acceptable criteria as regulated in international standard, as IEC standard. In general, the most transformer oil used in power transformer is mineral oil. Due to the sustainability of the raw material and the bad impact to the environment, it is important to find the new transformer oil as alternative to the mineral oil. The intention of this reseeach is to study the characteristic of the ester based oil: breakdown voltage, tangen delta and color. Analyis was performed by comparing the characteristic from both oils, and reviewed the parameters against the minimum criteria as required by IEC standard. Based on the analysis, ester based oil fulfill criteria and can be used for the transformer oil. Furthermore, based on the degree polymerization test result from the paper insulation immersed in both oils, it can be concluded that the insulation paper immersed in ester based oil has slower aging rate than insulation paper immersed in mineral oil.

SISTEM MONITORING EFEKTIVITAS KINERJA PANEL SURYA DENGAN PENAMBAHAN REFLEKTOR BERBASIS MIKROKONTROLER Tania Astari Trisnandini; Nurhedhi Desryanto; ismail kgs
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022
Publisher : Website

Utilization of Solar Panels as a fulfillment of electrical energy needs is very important, considering the conventional power sources currently used are very limited, which does not rule out the possibility of scarcity in the future. For this reason, a solar panel development was made with the addition of a flat mirror reflector in order to increase the effectiveness of performance. besides the implementation of the development of microcontroller technology as a monitoring system, so that the data obtained can be done automatically, continuously and stored. In this design, it uses current and voltage sensor which will be processed by the microcontroller with data results in the form of current, voltage and power values as well as time information for the resulting data. The data that shows the effectiveness of the performance of solar panels in this study is to compare the power generated by solar panels between solar panels without reflectors, solar panels with additional reflectors with installation angles of 450 and 750, so that it is known that the greatest efficiency value is in the performance of solar panels with additional reflectors installation angle of 750 is 1.06%.

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Contact Name Syah Alam

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Location Kota adm. jakarta barat, Dki jakarta INDONESIA

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Syah Alam

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syah.alam@trisakti.ac.id

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+6285710034984

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syah.alam@trisakti.ac.id

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Jl Kyai Tapa No.1

Location
Kota adm. jakarta barat,

Dki jakarta

INDONESIA