Results 61 to 70 of about 1,607 (195)

Impact of EU duty cycle and transmission power limitations for sub-GHz LPWAN SRDs: an overview and future challenges

EURASIP Journal on Wireless Communications and Networking, 2019
Long-range sub-GHz technologies such as LoRaWAN, SigFox, IEEE 802.15.4, and DASH7 are increasingly popular for academic research and daily life applications.
Martijn Saelens, Jeroen Hoebeke, Adnan Shahid, Eli De Poorter   +3 more
doaj   +1 more source

Dementia elderly tracker using Sigfox [PDF]

, 2023
Singapore has been grappling with the issue of an aging population for a number of years. As a result, some families have resorted to purchasing off-the-shelf location trackers designed for dementia patients.
Neo, Yizhe
core  

A Low‐Power Wearable IoMT System for Geofencing and Health Monitoring of Care‐Dependent Individuals: Design, Implementation and Field Testing

IET Wireless Sensor Systems, Volume 16, Issue 1, January/December 2026.
This paper presents an IoMT monitoring system for vulnerable individuals, particularly Alzheimer's patients, using a wearable device that combines GNSS positioning, BLE health sensors and LoRa communication to transmit data to the cloud. The cloud application provides geofencing alerts through instant messaging when patients leave safe zones and offers
Daniele Pugliese, Giuseppe Longo, Antonella di Palma, Adnan Rashid, Arcangela Rago, Giancarlo Sciddurlo   +5 more
wiley   +1 more source

A Comprehensive Review of Battery‐Free Energy Efficient RF and Microwave Systems

Journal of Engineering, Volume 2026, Issue 1, 2026.
Battery‐free radiofrequency (RF) and microwave systems have emerged as a promising solution for enabling long‐lifetime, maintenance‐free wireless sensing and communication platforms by eliminating conventional battery dependence. These systems operate by harvesting ambient or dedicated electromagnetic energy, converting it to usable electrical power ...
Stella N. Arinze, Augustine O. Nwajana, Vijayanandh Raja   +2 more
wiley   +1 more source

Internet of Things and Wireless Sensor Networks for Smart Agriculture Applications: A Survey

IEEE Access, 2023
The increasing food scarcity necessitates sustainable agriculture achieved through automation to meet the growing demand. Integrating the Internet of Things (IoT) and Wireless Sensor Networks (WSNs) is crucial in enhancing food production across various ...
Md. Najmul Mowla, Neazmul Mowla, A. F. M. Shahen Shah, Khaled M. Rabie, Thokozani Shongwe   +4 more
doaj   +1 more source

A Review of the Internet of Things (IoT) Landscape: Technologies, Applications, and Open Challenges

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The Internet of Things (IoT) has emerged as a large‐scale ecosystem that integrates sensing, communication, and computation across diverse application domains. Its deployment spans smart homes, wearable devices, industrial automation, and smart cities, where heterogeneous devices are required to operate under strict performance, reliability, and ...
Sidna Jeddou, Luis Diez, Amine Baina, Najid Abdellah, Ramón Agüero, Deepali   +5 more
wiley   +1 more source

Sistema de monitorização de consumo de água utilizando tecnologia Sigfox [PDF]

, 2017
Este projeto consiste na criação de um contador de água inteligente. Para tal foi criado um contador de água especial a ser colocado em série com o contador da habitação. Este novo contador contém 2 ímanes e um sensor de Wiegand que gera impulsos a cada
Rui Miguel Ribeiro Barbosa
core   +1 more source

Comprehensive Measurement‐Based Assessment of Downlink RF‐EMF Exposure in Urban Environments: Multi‐Method Analysis and Intercomparison

Bioelectromagnetics, Volume 46, Issue 8, December 2025.
ABSTRACT This paper presents a comprehensive measurement‐based assessment of radio‐frequency (RF) electromagnetic field (EMF) exposure level in a French city. Three types of assessment methods are used to collect measurement data: drive test (DT), spot measurements, and sensor networks. The DT measurements were conducted by a portable spectrum analyzer,
Shanshan Wang, Yarui Zhang, Yukun Liu, Jiang Liu, Emmanuelle Conil, Ourouk Jawad, Theodoros Samaras, Lamine Ourak, Joe Wiart   +8 more
wiley   +1 more source

IoT-Based Geolocation System Using Sigfox Network for Enhanced Student Safety: Design, Implementation, and Real-World Performance Evaluation

Engineering Proceedings
This paper presents the design, implementation, and validation of an IoT-based geolocation system using the Sigfox network to enhance student safety in urban environments. The proposed system integrates a GPS NEO-6M module with a Ufox Devkit, enclosed in
Edgar Freddy Robalino Peña, Jhon Maldonado, Luis Antonio Flores, Luigi O. Freire, Fabricio Trujillo, Jessica Castillo   +5 more
doaj   +1 more source

Smart Metering Device with Sigfox Interface [PDF]

, 2023
The aim of this bachelor thesis is the design and production of a measuring device using a microcontroller from the company NXP. The device sends measured values via the Sigfox IoT network, allows them to be read via Bluetooth Low Energy and monitors its
Janík, Jakub
core   +2 more sources