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Sukriyah Buwarda
Jurusan Otomasi Sistem Permesinan, Politeknik ATI Makassar, Makassar
Arts Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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STUDI PERBANDINGAN DAYA TERSIMPAN RECTIFIER ANTENA MULTIFREQUENCY Sukriyah Buwarda; Ika Puspita; Andi Abdu Khalid Kaharuddin
Journal of Science and Engineering Vol 5, No 2 (2022): Journal Of Science And Engineering (JOSAE)
Publisher : Fakultas Teknik Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/josae.v5i2.5191

Abstract

Penggunaan gelombang elektromagnetik sebagai sumber energi listrik alternatif dapat diperoleh dari beberapa frekuensi pancaran komersil. Penelitian ini bertujuan membandingkan daya yang dapat disimpan dari hasil penyearahan rectifier antenna dari beberapa sumber energi gelombang elektromagnetik. Sumber gelombang elektromagnetik yang dibandingkan antara lain dari frekeusni WiFi dan frekuensi pancaran dari televisi (TV UHF). Untuk menyerap gelombang elektromagnetik dengan frekuensi yang berbeda digunakan antenna multi frekuensi yang dapat menangkap dua frekuensi yang berbeda. Rectifier di rancang menggunakan software NI Multisim 14.2 dengan metode yang di gunakan yaitu voltage doubler 5 stage dengan tujuan untuk menghasilkan energi listrik DC dari inputan gelombang elektromagnetik yang merambat bebas di udara dan diterima oleh antenna TV UHF yang bekerja pada frekuensi 470-806 MHz dan antena Wi-Fi dengan frekuensi 2400MHz. Diperoleh bahwa daya yang dihasilkan dari input antena WiFi sebesar 1,43 Watt dengan tegangan 5,96 V, sedangkan daya yang diperoleh dari input antena TV UHF sebesar 0,42 Watt dengan tegangan 4,25 Watt.
RECTIFIER ANTENNA UNTUK ENERGY HARVESTING GELOMBANG ELEKTROMAGNETIK Sukriyah Buwarda
Journal of Science and Engineering Vol 5, No 2 (2022): Journal Of Science And Engineering (JOSAE)
Publisher : Fakultas Teknik Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/josae.v5i2.5629

Abstract

The results of the study have obtained rectifier antennas that can convert electromagnetic waves into DC electrical energy. One of the energy harvesting methods is to use rectenna. Rectenna is an antenna that can capture electromagnetic waves that propagate freely in the air which is integrated with a rectifier that is able to convert electromagnetic waves into electrical energy. In this study, a series of power storage has been made with the aim of storing electrical energy generated by the rectifier. Two types of antennas with different frequencies are used as test equipment, namely a WiFi antenna that works at a frequency of 2.4 GHz and a TV antenna that works at a frequency of 470-806 MHz. From the results of the tests carried out, a voltage of 5.96 V was generated in the power storage circuit with a charging process duration of 54 minutes 27 seconds using a Wi-Fi antenna integrated with a rectifier and step up dc to dc converter. Meanwhile, by using a TV antenna, a voltage of 4.25 V is produced with a charging process duration of 57 minutes 19 seconds.  
Perencanaan Kapasitas Produksi Menggunakan Metode Rough Cut Capacity Planning pada Home Industry Roti NK Rianti Indah Lestari; Sukriyah Buwarda; A.Dian Sry Rezki Natsir; Riskawati
Jurnal Serambi Engineering Vol. 9 No. 3 (2024): Juli 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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

Abstract

Home industry is a type of SME (Small and Medium Enterprise) that can promote community self-reliance and boost Indonesia's economic growth. NK Bread Home Industry produces various types of bread, including white bread, gembul bread and sweet bread. This home-based industry uses a make-to-order production system, with production levels based on orders. In order to anticipate fluctuations in demand, this industry also maintains stocks. The main problem for this cottage industry is the lack of accuracy in inventory planning due to the lack of demand forecasting. As a result, production is based on experience. In addition, production output is not maximised due to the lack of production capacity planning. This research aims to plan production capacity using the RCCP (Rough-Cut Capacity Planning) method with the BOLA (Bill of Labor Approach). The results obtained show that the required capacity is 1878.50 units, which is greater than the available capacity of 1417.26 units per period. In order to solve this problem, recommendations are made, such as the need to increase the number of workers, the number of machines, the adjustment of the production rate and the use of subcontracting. With these suggestions, it is expected that the production house will be able to maximise capacity, leading to an increase in production output.
Co-Authors A.Dian Sry Rezki Natsir Andi Abdu Khalid Kaharuddin Ika Puspita Rianti Indah Lestari Riskawati Riskawati