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All Journal Jurnal Teknik Electron: Jurnal Ilmiah Teknik Elektro
Ni Ketut Hariyawati Dharmi
Universitas Jenderal Achmad Yani
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering

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Kinerja Jaringan W-LAN untuk Komunikasi Pasca Bencana Sofyan Basuki; Ni Ketut Hariyawati Dharmi
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 17 No 2 (2018): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol17no2.85

Abstract

Setelah terjadi bencana, suplai daya listrik terputus dan infrastruktur sistem komunikasi pada umumnya mengalami kerusakan. Tim evakuasi dari Badan Nasional Penanggulangan Bencana (BNPB) atau BASARNAS dan paramedik memerlukan komunikasi untuk kegiatan penyelamatan dan koordinasi. Dengan bantuan balon udara sebagai repeater, fotovoltaik dan baterai cadangan sebagai catu dayanya, maka teknologi komunikasi W-LAN dapat digunakan untuk menggantikan sistem komunikasi lainnya dan menjangkau lebih luas di area bencana. Modifikasi topologi jaringan W-LAN ini di simulasikan menggunakan Network Simulator NS2 untuk mengetahui kelayakan dan kinerjanya. Pada skenario jarak, ketinggian balon udara dari 100 sampai 150 meter memberikan kinerja yang stabil dan pada skenario jumlah host dari 15 sampai 45 user, sistem masih mampu memenuhi trafik transfer dokumen elektronik, komunikasi media sosial dan gambar bergerak sesuai standar yang ditetapkan IEEE_802.11b-1999.
Rancang Bangun Purwarupa Energy Harvesting menggunakan Piezoelektrik sebagai Pembangkit Energi Listrik Kusnandar Kusnandar; Ni Ketut Hariyawati Dharmi; Aisyah Nurul Khairiyah
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 20 No 2 (2021): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol20no2.383

Abstract

The call to use clean and sustainable energy as an alternative energy source has grown rapidly over the past decade. This was triggered by the issue of increasing environmental pollution, the limited and decreasing amount of non-renewable energy and became one of the goals of the 2030 Sustainable Development Goals (SDG). According to the principle of conservation of energy, energy cannot be fully utilized, there is always some energy wasted. The technology to reuse "wasted" energy into a source of electrical energy is called energy harvesting. This paper describes the design of a prototype energy harvesting system using a floor-mounted piezoelectric that generates electrical energy when stepped on. The system prototype is composed of 16 piezoelectric arrays which are made into 4 rows and installed in parallel. The system is equipped with the LTC358 energy harvester module and the MT 3608 step-up booster module. Test results showed electrical energy was successfully in the battery. The maximum power generated by the piezoelectric array after passing through a full-wave rectifier is 3.48 W. For the same number of footsteps against the piezoelectric array, the increase in charge of the Li-Po 150 mAH battery is smaller than that of the 250 mAH type.
Perancangan Antena Segitiga Gerigi Circular Slot untuk Aplikasi Long Term Evolution (LTE) Febby Eriane Putri; Atik Charisma; Ni Ketut Hariyawati Dharmi
ELECTRON Jurnal Ilmiah Teknik Elektro Vol 2 No 2 (2021): Jurnal Electron, November 2021
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/electron.v2i2.3

Abstract

The communication technology that is currently popular is 4G LTE technology. Technology that has very high efficiency and speed of access. Antennas with good performance are needed to support LTE technology with small dimensions, light weight and cheap to manufacture in large quantities, and these antennas are microstrip antennas. Microstrip antenna has the disadvantage of low gain and narrow bandwidth. Proximity coupled is one method to improve bandwidth and gain on microstrip antennas. Proximity coupled is a feeding technique or method of feeding by adding a substrate for the groundplane and feed channel. In this simulation, in addition to using the proximity coupled feeding method, the patch antenna which is triangular in shape will be added to a circular slot to improve the performance of the antenna. The simulation results obtained for the resonant frequency of 2.35 GHz, namely return loss -24.6419 dB, VSWR 1.0192 and gain 6.6598 dB and bandwidth of 73.3 MHz with range 25 – 100 MHz. This specification is in accordance with the needs of LTE antennas
Rancang Bangun Sistem Presensi Pegawai Menggunakan Pintu Otomatis Berbasis NFC (Near Field Communication) Kusnandar Kusnandar; Ni Ketut Hariyawati Dharmi; Andika Dwi Naviandi; Yusuf Nugraha
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 21 No 2 (2022): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol21no2.443

Abstract

The attendance system is considered to be able to assist an agency in providing information about a person's attendance schedule. The attendance system can also be used as an effective tool for implementing discipline in an agency because, in this attendance system, we can see the difference between people's discipline through the timeliness of attendance that has been determined at each of these agencies. In designing this system the method used is NFC (Near Field Communication) where this system can be used to help record someone's attendance schedule. The hardware used is a door lock solenoid, and personal computer devices, while the software used is Wemos D1 Mini. For recording the database used is MySql. The results of presence system using NFC using the Key Door Lock method have a very high level of accuracy for reading an identity card. It can be seen from the data that has been collected that the accuracy of reading an identity card by an NFC reader shows that there is no error or error. The results of response time check test on the NFC reader reading can be proven by formula, where average time value of response time check test is 0.67 minutes.
Co-Authors Aisyah Nurul Khairiyah Andika Dwi Naviandi Atik Charisma Febby Eriane Putri Kusnandar Kusnandar Sofyan Basuki Yusuf Nugraha