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    543 research outputs found

    Rancang Bangun Box Pengering Sepatu Berbasis Mikrokontroler

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    Intisari -- Sepatu adalah jenis alas kaki (Fotwear) yang biasanya terdiri dari sol, telapak sepatu, penutup sepatu, dan tali sepatu. Kendala yang dialami pada sepatu adalah proses pengeringan menggunakan Cahaya matahari langsung akan merusak kondisi sepatu. Namun bukan hanya  factor musim yang mempengaruhi masalah pengeringan sepatu yang basah bisa jadi karena situasi dan kondisi seperti malam hari. Pada Box pengering sepatu ini komponen yang digunakan yaitu elemen pemanas kipas dc peltier, sensor DHT22, Sensor Soil Moisture (Kelembapan Tanah), Lampu UV-C, dan komponen pendukung lainnya. Untuk proses pengeringan sepatu menggunakan kipas dc peltier sebagai penghasil suhu panas dan dingin, sensor DHT22 dan Sensor Soil Moisture berfungsi sebagai sensor suhu dan kelembapan pada box pengeringan sepatu, dan lampu UV-C berfungsi sebagai sterilisasi pada sepatu saat proses pengeringan

    Identifikasi Persediaan Makanan di dalam Lemari Pendingin Berbasis Raspberry Pi dan Deep Learning

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    Analisis Traction Power Supply Substation LRT Palembang

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    Adanya penambahan Highway Light Rail Transit (LRT) maka menyebabkan beban Traction Power Supply Substation (TPSS) semakin bertambah karena jarak antar LRT dalam perjalanan kereta yang semakin rapat. Dengan sistem ini maka jumlah tarikan daya LRT pada setiap keberangkatan di setiap stasiun meningkat yang berakibat naiknya beban arus listrik pada gardu. Tujuan penelitian ini adalah menganalisis kemampuan tiap-tiap gardu listrik untuk mengetahui berapa besar jumlah kebutuhan daya listrik sesuai dengan pola operasi TPSS serta untuk mengetahui berapa besar jumlah kebutuhan daya listrik LRT Metode penelitian ini adalah: 1. Study literatur, 2. Pengumpulan data, 3. Simulasi menggunakan ETAP, 4. Perbandingan kapasitas perhitungan dengan kapasitas eksisting, 5. Analisis. Berdasarkan hasil perhitungan kapasitas daya yang tersedia dalam keadaan per LRT Asrama Haji yaitu sebesar 1339 kW pada lintas Puntikayu yaitu 1142 kW dan sebesar 653 kW pada lintas Demang, kapasitas daya yang tersedia sebesar  4141 kW. Persentase daya terpakai tertinggi sebesar 32,3 percen sehingga kapasitas daya yang tersedia masih mencukupi untuk memenuhi kebutuhan beban berdasarkan daya eksisting

    Variasi Nilai Tegangan Percik Arrester Akibat Pengaruh Kapasitas Trafo Daya dan Jarak Arrester

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    The ability of each substation to withstand lightning and overvoltage affects the power distribution of the power system. In order to make the best operation of the substations, it is necessary to install Arresters which are used to protect the transformers in each substation from overvoltage caused by lightning surges. In this study, the effect of capacity on the placement distance of the arrester is discussed with 30 MVA and 60 MVA transformers. The purpose of this study was to determine the effect of the power transformer capacity of the four substations on the value of the arrester spark voltage and to obtain the optimal arrester installation technique at each substation using the Lagrange optimization method. Lagrange optimization method is used to determine the optimal distance between the arrester and the power transformer. The calculation results show that in a transformer with a capacity of 60 MVA, the Arrester spark voltage occurs at t = 20 microseconds with a voltage drop of 390.49 kV. Meanwhile, in a transformer with a capacity of 30 MVA, the Arrester spark time is at t = 13.9 microseconds with a voltage drop of 266.3 kV. This shows the capacity of the transformer that affects the magnitude of the Arrester's spark voltage and the spark time. Thus, the smaller the transformer capacity, the smaller the arrester spark time with the large voltage dro

    RANCANG BANGUN PROTOTIPE KANDANG KAMBING SISTEM TERKOLEKSI DAN PEMBERIAN PAKAN OTOMATIS BERBASIS ARDUINO UNO R3

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    Peternak kambing saat ini kurang diminati dalam sektor peternakan, dikarenakan kotoran kambing yang berbau dan hanya menghasilan penghasilan tahunan. Oleh karena itu salah satun inovasi untuk mengatasi masalah ini dengan membuat Kandang kambing sistem terkoleksi dan pemberian pakan otomatis berbasis Arduino Uno R3 yang mampu  mengumpulkan dan memisahkan feses dengan urine serta memberikan pakan otomatis secara real time sesuai waktu yang ditentukan.  Pada pukul 08.00 dan 16.00 WIB pemberian pakan akan diberikan pada ternak dengan menggerakkan motor servo untuk membuka katup penampungan pakan sehingga  pakan akan jatuh pada sensor loadcell dan ditimbang dengan berat minimal 1 kg agar konveyor dapat bergerak menghantarkan pakan pada ternak. Bersamaan dengan pemberian pakan, konveyor kotoran juga akan bergerak untuk menghantarkan kotoran menuju penampungan kotoran. Alat penelitian ini dapat menampilkan data nilai waktu pemberian pakan dengan keberhasilan sebesar 99,95 persen, berat pakan dengan tingkat keberhasilan 65,97 persen, waktu hidupnya relay sebagai switching dari motor DC selama 3,6 detik , dan jarak laju konveryer sejauh 60 cm. secera keseluruhan tingkat keberhasilan alat sebesar 91,48 persen dengan nilai rata rata waktu pengoperasian alat sebesar 12,6 detik. Sehingga dapat dikatakan secara fungsional alat telah berfungsi dengan baik

    Analisa Dampak Masuknya Photovoltaic (PV) Dalam Skala Besar Terhadap Performa Sistem Tenaga Listrik

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    Abstract Photovoltaic (PV) is a renewable energy generator that produces electrical energy at a certaintime or also called intermittent.. A large number of PV penetrations into the system significantly affects theability of conventional generators to catch up with power due to decreased PV output power or when PVoutput power is not available. This is due to the different characteristics of the lean rate of each type ofgenerator. To overcome the power imbalance in the electric power system with various compositions, it isnecessary to limit the number of PV that is allowed to be installed in the electrical power interconnectionsystem.In this study, the generator and load data were used collectively from the Indonesian National GreatCompany. The power plants used are hydropower plant, steam power plant, geothermal power plant, dieselpower plant, gas engine power plant, and gas power plant. Based on the simulation results, the number of PVthat is allowed to be installed is a maximum of 30 percent of the total generation in a certain generationconfiguration. If the amount of PV exceeds the maximum limit, there will be a power imbalance between thegenerator and the load. If the generator configuration has a large generator capacity and has a high lean rate,PV plants can be connected to the electrical power interconnection of more than 30 percent of the total generation. Keywords Duck curve, photovoltaic, ramping rate, power imbalance. &nbsp

    Analisis Karakterisasi Penyakit pada Tanaman Pisang Menggunakan Kamera Termal dengan Metode Tresholding

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    Abstract  Banana is a fruit plant that is widely produced in Indonesia. Unfortunately, this plant is verysusceptible to diseases which can reduce the quality and quantity of the crop. This paper proposes diseasedetection in banana plants using a thermal camera. The detection is carried out using image processingtechniques with multilevel thresholding methods. The image is captured using a thermal camera, then theimage is preprocessed to suit what is desired. After that, so that the position is the same as the image takenusing a digital camera, the image produced by the thermal camera is carried out by an image registrationprocess. The image processing result is compared with the ground truth image obtained from a digitalcamera to determine the effectiveness of the proposed method. The effectiveness of the proposed method ismeasured using the parameters Recall, Precision, F-measure, and Accuracy. The effectiveness of theproposed method is effective enough to produce a recall value of 76.65 percents, Precision 58.38 percents, F-measure64.68 percents, and Accuracy 62.87percents. Keywords Banana Plant Disease, Thermal Image, RGB Image, Multi Thresholding, EffectivenessMeasurement. &nbsp

    Perancangan Sistem Keamanan Kain Tradisional Lampung Berbasis Sensor PIR

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    Abstract The museum is a place to store historical relics that are very important as evidence that these relics are true. Museums are also a means for a country to show the public about the relics of historical objects which are treasures and must be preserved. Lampung Province State Museum, is one of the museums in Indonesia. One of the relics that must be preserved in this museum is the traditional Lampung cloth which is still there and is a legacy for the people of Lampung. The Lampung Museum has a collection of traditional Lampung fabrics whose safety conditions are still a problem for the Lampung Museum management, where there is a lack of care and it is easy for visitors to touch and change the layout of these items. This can cause damage and changes to the collectible. Therefore, the Passive Infra Red (PIR) sensor-based Security System is a tool designed to maintain the security system of the Lampung Province State Museum object "Ruwa Juwai", by using a PIR sensor which can detect the presence of infrared rays which will be detected by the sensor and then will activate the buzzer and LED as output. The design of the PIR sensor-based security system tool is carried out by observing the infrared sensor detected on the PIR sensor and the output on the security system tool in the form of a buzzer and LED.Keywords Lampung Museum, Security System, Passive Infra Red Sensor &nbsp

    RANCANG BANGUN SOFTWARE PERHITUNGAN UNTUK SISTEM METER TURBIN DENGAN METODE FUZZY

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    Custody transfer is an important activity in the oil and gas industry which requires high accuracy. In keeping the metering system in an accurate condition, dynamic testing is needed as an evaluation of the custody transfer metering system. In carrying out dynamic testing, software is needed so that calculations will be more accurate and minimize errors. Calculation software in the market is currently quite expensive and does not cover all the calculation needs needed in the field, it is necessary to make calculation software that suits your needs and has a low price. With this software, it is hoped that it can simplify the calculation process and speed up troubleshooting time when there is a measurement deviation because the data read in the flowcomp can be directly proven for its accuracy. In finding a correction factor, a method is needed that is able to determine the value between two known values. Fuzzy method is considered capable of solving these problems. Sugeno fuzzy method is suitable for use in this study because it has an output in the form of a constant. After testing several random samples, the results of the Sugeno fuzzy method have the greatest error on the MPMS API table, namely 0.00004. When compared with the interpolation method, the fuzzy method has the same results as the value generated by the interpolation method. So it can be concluded that the fuzzy method can be used as a calculation method in finding the correction factor

    ANALISIS PAKET DATA DAN PERHITUNGAN KECEPATAN OBJECT DENGAN MENGGUNAKAN MODUL NODEMCU ESP8266 DAN SENSOR ULTRASONIC DENGAN LOCALHOST

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    Abstrak - Bandar Lampung merupakan ibu kota Provinsi Lampung yang merupakan pintu gerbang Pulau Sumatera. Hal ini tentu akan berpengaruh terhadap kondisi lalu lintas di Bandar Lampung yang akan dilalui oleh banyak kendaraan dari berbagai jenis transportasi darat, sehingga akan menyebabkan kemacetan yang cukup signifikan. Oleh karena itu, penulis mengembangkan sebuah sistem monitoring objek dengan sistem pengiriman data yang menggunakan modul NodeMCU ESP8266 berbasis sensor ultra sonic melalui jaringan 4G ke localhost, dengan parameter yang dianalisis adalah jumlah paket data dan kecepatan objek yang ada di perlintasan Jalan Sultan Agung Bandar Lampung. Skenario pada penelitian ini menggunakan 4 sensor ultrasonic dan sebuah controller yaitu NodeMCU ESP8266 yang digunakan untuk melakukan pengambilan data saat kendaraan melintas di jalan raya, maupun saat kendaraan dalam kondisi berhenti, lalu data dikirimkan menuju server dengan menggunakan XAMPP kemudian data yang telah diperoleh diekstrak. Berdasarkan hasil penelitian diperoleh hasil bahwa paket data yang hilang dengan nilai terkecil terjadi saat pengambilan data pada waktu siang hari tepatnya tanggal 21 Januari 2021 dengan nilai 28 paket atau persentase 14,66 persen dari jumlah paket keseluruhan pada sensor 2. Sementara, jumlah paket yang diterima paling banyak terjadi saat waktu siang hari tepatnya tanggal 21 Januari 2021 dengan jumlah 163 paket atau persentase sebesar 85,34 persen pada sensor 2. Kata Kunci : Localhost, Microcontroller, NodeMCU ESP 8266, Sensing, Sensor Ultrasoni

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