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Mobile Ticketing Menggunakan Teknologi Near Field Communication pada Bus Rapid Transit Bandar Lampung: Studi Pendahuluan Wicaksono, Dwi Satrio; Ulvan, Ardian; Ulvan, Melvi
JITROKOM Vol 1, No 1 (2015)
Publisher : JITROKOM

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

Abstract â Trip fare payment using paper money on public transport Bus Rapid Transit Bandar Lampung considered normal. The payment process can be improved using a technology called Near Field Communication (NFC) in android smartphone, which in turn was named after the mobile ticketing process. The author tries to analyze this technology using SWOT analysis (Strength, Weaknesses, Opportunities, Threats) before the technology is applied. The results obtained are in this technology: Strenghts - efficient use, Weaknesses - all those not yet ready to use, Opportunities - the organizers can reap the benefits of the application of this technology, Threats - security is still doubted by consumers. Solution of existing problems that the government should start first by issuing government regulations and the ecosystems that support for NFC technology.Â Keywords - SWOT Analysis, Mobile Ticketing, Near Field Communication (NFC).Â Intisari â Pembayaran tarif perjalanan menggunakan uang kertas pada transportasi publik Bus Rapid Transit Bandar Lampung dianggap sudah biasa. Proses pembayaran dapat ditingkatkan menggunakan teknologi Near Field Communication (NFC) pada smartphone android, yang selanjutnya proses ini dinamakan mobile ticketing. Penulis mencoba menganalisa teknologi ini menggunakan metode analisa SWOT (Strenght, Weaknesses, Opportunities, Threats) sebelum teknologi ini diterapkan. Hasil yang didapatkan yaitu teknologi ini memiliki: Strenghts â efisien penggunaannya, Weaknesses â semua pihak belum siap penggunaannya, Opportunities â pihak penyelenggara dapat meraup keuntungan dari pengaplikasian teknologi ini, ThreatsÂ â keamanan masih diragukan oleh konsumen. Solusi dari permasalahan yang ada yaitu pemerintah harus memulai terlebih dahulu dengan mengeluarkan peraturan pemerintah dan ekosistem yang mendukung untuk teknologi NFC.Kata kunciÂ â Analisa SWOT, Mobile Ticketing, Near Field Communication (NFC).

Peningkatan Kapasitas Sel CDMA pada Daerah Urban dengan Partisi Sel Ulvan, Melvi
Jurnal Teknik Elektro Vol 6, No 2 (2006): SEPTEMBER 2006
Publisher : Institute of Research and Community Outreach

A cell partition is expected to reduce the inter-cell interference, increasing capacity and optimize the frequency spectrum allocation. The purpose of cell partition is to increase the capacity of inner cell which have lower power and different frequency to outer cell. This paper shows how generous the capacity increased after the partition has been done. The calculation of MAPL and the link budget have been done have been done as well. The propagation model of Walfisch-Ikegami has been used in the paper. As the result, It has been found that the site capacity was increased, therefore the order of blocking can be reduced. The cell partition is appropriate for the area with high-level of traffic. Abstract in Bahasa Indonesia : Partisi sel diharapkan dapat mengurangi pengaruh interferesi, meningkatkan kapasitas pada sel tersebut dan dapat mengoptimalkan spektrum frekuensi yang tersedia. Tujuan partisi sel adalah untuk meningkatkan kapasitas, terutama kapasitas untuk inner cell yang daya lebih rendah dan frekuensi yang berbeda dari outer cell. Makalah ini akan menunjukkan seberapa besar peningkatan kapasitas setelah dilakukan partisi. Perhitungan Maximum Allowable Path Loss (MAPL) dan link budget untuk arah forward dan reverse telah dilakukan. Model propagasi yang digunakan adalah model propagasi daerah urban, Walfisch-Ikegami, Kesimpulan yang didapat adalah kapasitas pada site dapat ditingkatkan sehingga keadaan blocking pada sel tersebut dapat dikurangi. Metode partisi sel ini sangat cocok untuk daerah urban yang mempunyai tingkat kepadatan traffic yang tinggi. Kata kunci: kapasitas sel, partisi sel, perencanaan sel, selular CDMA.

The Implementation Analysis Of Lamport Scheme With Sha-256 On Mobile E-Office Hendra Widodo; Mardiana Mardiana; Melvi Melvi; Ardian Ulvan; Pattarakorn Sajjaporn Nuttachot
International Journal of Artificial Intelligence Research Vol 5, No 2 (2021): December 2021
Publisher : STMIK Dharma Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29099/ijair.v5i2.212

Electronic administration system is one of the best solutions in the current digital era, electronic-based systems are considered to make it easier for an organization to process data and can reduce the possibility of data loss due to human error or natural disasters. The current administrative data management application is called the Electronic Office (E-Office). The E-Office handles data for incoming mail, outgoing mail and mail disposition. There are frequent delays in receiving information and validating letter files that are still carried out using physical files, so the mobile e-office is a solution that can be used by an agency to make it easier for workers to access information more quickly and can be done anywhere. Data security is an important thing that needs to be considered in an electronic transaction, so this research will add data security to the mobile e-office using sha-256 and lamport schemes. We present data on the results of this mobile e-office test on mobile devices and virtual private servers (vps), the data is in the form of functional application performance testing results and records of processing time performed by mobile and vps devices. From this data an analysis will be carried out to determine the appropriateness of the devices that can be used in running a mobile e-office.

IMPLEMENTASI MODUL GLOBAL POSITIONING SYSTEM (GPS) PADA SISTEM TRACKING BUS RAPID TRANSIT (BRT) LAMPUNG MENUJU SMART TRANSPORTATION Yetti Yuniati; Melvi Ulvan; Mardiyah Azzahra
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 14, No 2 (2017): JUNI 2017
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v14i2.4059

This research is to discuss about the tracking system at the Bus Rapid Transit (BRT) Trans Bandar Lampung using the Global Positioning System (GPS) module with the delivery position data bus via Short Message Service (SMS), which will be stored and processed with data base, so that we can know the bus position and display in web application of Geographic Information System (GIS). Testing of bus tracking system consists of data collection at every bus stop and the road Rajabasa - Sukaraja by installing a GPS module in the bus and get the fault tolerance of 51.0096 meters, average speed calculation of bus rate to determine the density of vehicle traffic obtained busiest streets of bus stop Ramayana to bus stop Simpur Center and from the bus stop Mall Kartini to bus stop Telkom (Bambu Kuning market)and bus arrival time in three time using time data and position coordinates buses have been obtained by the results of the longest time at 15:00 pm by total time from Rajabasa to Sukaraja and back again to Rajabasa of 86.2574 minutess, and testing display of bus stop in GIS web can be seen with the page http://webgis.unila.ac.id, the web page containof information about BRT like the bus stop location, the distance between bus stops, the arrival time of BRT at each bus stop vehicle density and the density of vehicle traffic routes Rajabasa - Sukaraja. Keywords: Smart transportation, Bus Rapid Transit (BRT), Global Positioning System (GPS), Short Message Service (SMS), web Geoghgrapic Information System (GIS)

Implementasi Budidaya Lobster dengan Sistem Pertanian Akuaponik Berbasis IoT (Internet of Things) Irfan Mirda; Handrio Handrio; Bagus Wahyu Pratomo; Melvi Melvi; Ardian Ulfan; Aryanto Aryanto
E-JOINT (Electronica and Electrical Journal Of Innovation Technology) Vol 3, No 1: E-JOINT, Juni 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/e-joint.v1i3.1326

Perubahan iklim, kepadatan penduduk, dan kegiatan ekspor-impor yang tidak stabil menyebabkan dampak yang cukup serius bagi masyarakat terutama Provinsi Lampung. Hal ini berdampak pada kegiatan usaha terutama dibidang pertanian dan kelautan. Banyak warga yang mata pencahariannya terganggu terutama petani. Petani sangat merasakan kesulitan disamping harga produksi yang naik dan modal produksi yang meningkat. Dengan adanya hal ini tentunya sangat dibutuhkan suatu inovasi yang memungkinkan petani tetap memiliki penghasilan walau kekurangan lahan. Oleh karena itu, penulis melakukan suatu inovasi dengan membuat sistem pertanian akuaponik yang didukung oleh suatu aplikasi monitoring berbasis IoT (Internet of Things) yang diberi nama lobsternik.id. Sistem akuaponik yang dikembangkan yaitu dengan budidaya lobster dan tanaman. Aplikasi ini akan sangat membantu masyarakat pembudidaya dalam mengawasi dan menjaga tanaman serta lobster secara real-time sehingga didapatkan hasil tanaman dan lobster yang maksimal dan berkualitas.

Perancangan Antena Yagi Gain Tinggi Pada Ground Control Station Wahana Udara Nirawak Melvi Melvi; Nur Fadillah; Yetti Yuniati; Aryanto Aryanto; Nora Aditiyan; Cahyo Mustiko Okta Muvianto; Ardian Ulvan
Jurnal Rekayasa Elektrika Vol 16, No 3 (2020)
Publisher : Universitas Syiah Kuala

The uncrewed Aerial Vehicle (UAV) operation is currently dominated by autonomous technology (autopilot) rather than manual control via remote control. During flying the mission autonomously, communication between the UAV and the Ground Control Station (GCS) must be in good and stable conditions. The GCS can well receive the telemetry data and payload sensor data carried by the vehicle. Conversely, any inconsistency parameters can be corrected by the GCS before transmitted to the UAV. Therefore, the role of the antenna is crucial to avoid signal loss during the communication process. This study focuses on GCS’s antenna. By designing the Yagi type antenna with the optimization of the distance, the number of directors, material, and shape of the reflector through CST simulation. The best option chosen is the Yagi antenna with the same distance between directors, seven directors, copper material, and flat reflectors with a VSWR of 1.1134, return loss -25.411 dB and 10.7 dB of gain. The measurement result after fabrication is the VSWR of 2.165 and the return loss of -8.677 dB. The antenna test results, when the UAV was flown as far as 2.5 km, found that the signal strength received by the GCS is -70.68 dBm with RSSI 107, and the signal strength in percent is 96%.

Sistem Peringatan Dini Untuk Pengendalian Pembatasan Jarak Fisik Dengan Metode RSSI Menggunakan Modul Wemos D1 Mini Noni Mastiana; Ardian Ulvan; Melvi Ulvan
Jurnal Rekayasa Elektrika Vol 17, No 4 (2021)
Publisher : Universitas Syiah Kuala

Covid-19 was first reported in Indonesia in March 2020. A month later the confirmed cases had reached 1528 cases and the death toll was 136 cases. Distance restrictions, also known as physical and social distance, are one of the government's efforts to reduce the rate of increase in the number of positive Covid-19 patients. However, this policy is still not fully effective, due to the low level of community compliance. When personal awareness has not been awakened, the use of technology in the context of early warning to maintain distance is an effective solution. This article discusses the use of received signal strength indicator (RSSI) from the Wemos D1 Mini module as a model of an early warning system device to anticipate unsafe distances when someone is in a crowd. The use of RSSI in this study shows that the device made works well, where the alarm is active when the distance between devices is 1 meter. The system performance was analyzed by calculating and measuring the average RSSI error value of -34.46 dBm and the average distance error of 0.26 meters. Overall, the early warning system using this method can be used properly to estimate physical distance restrictions during a pandemic.

Self-Organisation Network (SON) Dengan Mekanisme Load Balancing Ardian Ulvan; Melvi Ulvan; Robert Bestak
Jurnal Rekayasa Elektrika Vol 14, No 3 (2018)
Publisher : Universitas Syiah Kuala

Load balancing is one of the mechanism used in the self-organization network (SON) to balance the traffic at the overloaded base station with the adjacent low-loaded base station. Load balancing is done by adjusting the handover parameters (metric) to obtain the optimal traffic balance. In this work, the adjusted parameters are the capacity of the cell. Cell capacity is strongly influenced by the bandwidth, modulation type, and the bit rate used by the user. The performance of load balancing was tested by a simulation and network test-bed measurement. The testing results on the Long-Term Evolution Advanced network showed the greater the bandwidth the greater the capacity of the cell. Moreover, the larger type of modulation, the cell capacity will also be greater. On the other hand, the greater bit rate used by the user, then the cell capacity will decrease. The calculation analysis of cell capacity is taken as the basic operation for load balancing procedure. A load balancing process algorithm is introduced to describe the mentioned procedure. The algorithm also considers the ping-pong effect that might occur due to the delay on the handover process.

Perancangan Antena Yagi Gain Tinggi Pada Ground Control Station Wahana Udara Nirawak Melvi Melvi; Nur Fadillah; Yetti Yuniati; Aryanto Aryanto; Nora Aditiyan; Cahyo Mustiko Okta Muvianto; Ardian Ulvan
Jurnal Rekayasa Elektrika Vol 16, No 3 (2020)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v16i3.18682

The uncrewed Aerial Vehicle (UAV) operation is currently dominated by autonomous technology (autopilot) rather than manual control via remote control. During flying the mission autonomously, communication between the UAV and the Ground Control Station (GCS) must be in good and stable conditions. The GCS can well receive the telemetry data and payload sensor data carried by the vehicle. Conversely, any inconsistency parameters can be corrected by the GCS before transmitted to the UAV. Therefore, the role of the antenna is crucial to avoid signal loss during the communication process. This study focuses on GCS’s antenna. By designing the Yagi type antenna with the optimization of the distance, the number of directors, material, and shape of the reflector through CST simulation. The best option chosen is the Yagi antenna with the same distance between directors, seven directors, copper material, and flat reflectors with a VSWR of 1.1134, return loss -25.411 dB and 10.7 dB of gain. The measurement result after fabrication is the VSWR of 2.165 and the return loss of -8.677 dB. The antenna test results, when the UAV was flown as far as 2.5 km, found that the signal strength received by the GCS is -70.68 dBm with RSSI 107, and the signal strength in percent is 96%.

Self-Organisation Network (SON) Dengan Mekanisme Load Balancing Ardian Ulvan; Melvi Ulvan; Robert Bestak
Jurnal Rekayasa Elektrika Vol 14, No 3 (2018)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v14i3.9987

Load balancing is one of the mechanism used in the self-organization network (SON) to balance the traffic at the overloaded base station with the adjacent low-loaded base station. Load balancing is done by adjusting the handover parameters (metric) to obtain the optimal traffic balance. In this work, the adjusted parameters are the capacity of the cell. Cell capacity is strongly influenced by the bandwidth, modulation type, and the bit rate used by the user. The performance of load balancing was tested by a simulation and network test-bed measurement. The testing results on the Long-Term Evolution Advanced network showed the greater the bandwidth the greater the capacity of the cell. Moreover, the larger type of modulation, the cell capacity will also be greater. On the other hand, the greater bit rate used by the user, then the cell capacity will decrease. The calculation analysis of cell capacity is taken as the basic operation for load balancing procedure. A load balancing process algorithm is introduced to describe the mentioned procedure. The algorithm also considers the ping-pong effect that might occur due to the delay on the handover process.

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