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All Journal Jurnal Teknologi Elektro Indonesian Journal of Electrical Engineering and Computer Science
Yosefine Triwidyastuti
Universitas Dinamika
Electrical & Electronics Engineering

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Distributed localization using normalized quad lateration in LoRa networks: application for tourist position estimation Musayyanah Musayyanah; Prima Kristalina; Yosefine Triwidyastuti; Pauladie Susanto; Mochammad Zen Samsono Hadi
Indonesian Journal of Electrical Engineering and Computer Science Vol 29, No 3: March 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v29.i3.pp1446-1455

Abstract

The tourism sector has been growing rapidly along with the decline of COVID-19. This sector should pay attention to safety and security, which is by tracking the position of tourists. In this work, we propose a tourist positioning tracking system. A node containing a microcontroller with LoRa wireless communication called unknown node (UN) is assembled as a wearable device. We use the received signal strength indicator (RSSI)-based localization technique with an additional normalization method to correct the error rate in position estimation. This method estimates the distance between the anchor node (AN) and UN to approximate the actual distance value. Three-dimensional position tracking (longitude, latitude, altitude) of five UN surrounded by four AN was performed using the quadlateration method. The estimation process was carried out by the UN whereas receiving information is transmitted from the four AN. The communication between AN and UN used a scheduling algorithm on all AN. The position estimation error of the five UNs was measured using mean square error (MSE) yields 20.73 m, 50.32 m, 32.92 m, 21.40 m, and 16.89 m respectively. The accuracy of the estimated distance obtained by the proposed normalization quadlateration method is increased up to 15.22%.
Pemantauan Posisi Multi-Node Menggunakan Aplikasi GUI pada LoRaWAN Adam Fiqih Ristanto; Pauladie Susanto; Yosefine Triwidyastuti; Musayyanah Musayyanah; Charisma Dimas Affandi; Fifin Ernawati
Jurnal Teknologi Elektro Vol 14, No 2 (2023)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2023.v14i2.002

Abstract

Perangkat Internet of Things (IoT) merupakan perangkat yang terkoneksi pada jaringan internet. Salah satu media transmisi yang low power berbasis IoT adalah LoRaWAN.  LoRaWAN mampu menerima data dari banyak user pada jarak jauh dan terkoneksi langsung dengan database server melalui internet.  Pada artikel ini, membahas mengenai monitoring posisi multi node pada jaringan LoRaWAN. Terdapat tiga node, direpresentasikan sebagai end node. LoRaWAN sebagai satu node server atau disebut LoRa Gateway. Pada node server terpasang aplikasi berbasis Graphic User Interface (GUI) yang dapat memantau posisi end node secara real time. Pengujian pada artikel ini, meliputi pengujian transmisi packet loss dari end node ke node server, dan pengujian aplikasi untuk memenuhi Human Computer Interaction (HCI). Hasil transmisi tiga node end ke LoRa Gateway berturut-turut adalah 6,04%, 1,13%, dan 1,9%.  Pengujian kelayakan aplikasi dari segi sudut pandang pengguna telah memenuhi standart HCI dengan nilai sangat setuju 61% dan setuju 50%.
Co-Authors Adam Fiqih Ristanto Charisma Dimas Affandi Fifin Ernawati Mochammad Zen Samsono Hadi Musayyanah Musayyanah Pauladie Susanto Prima Kristalina