4.8 Article

Exploring the Boundaries of Ambient RF Energy Harvesting With LoRaWAN

期刊

IEEE INTERNET OF THINGS JOURNAL
卷 8, 期 7, 页码 5736-5743

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JIOT.2020.3030349

关键词

Radio frequency; Energy harvesting; Energy consumption; Downlink; Sensors; Internet of Things; Analytical models; LoRaWAN; LPWAN; radio-frequency (RF) energy harvesting (EH)

资金

  1. Science Foundation Ireland
  2. European Regional Development Fund [13/RC/2077]

向作者/读者索取更多资源

This study extends previous research on powering LoRaWAN sensors with high-energy ambient or wireless transfer power sources by exploring the boundaries of using low-energy RF ambient sources. It identifies the feasibility boundaries for powering LoRaWAN sensor nodes from ambient RF energy, highlighting design and environmental factors.
Environmental monitoring is an important application for wireless sensing devices. Battery power requires in-the-field replacement, and the chemicals involved are environmentally harmful, so harvested energy is a useful alternative. Previous research has shown the feasibility of powering LoRaWAN sensors using high-energy ambient or wireless transfer power sources. This article extends this work by exploring the boundaries of using low-energy radio-frequency (RF) ambient sources. Ambient RF energy harvesting is an attractive option, but it is more challenging due to the low levels of energy density typically available.Using an analytical LoRaWAN device model and RF energy data collected from around the world, a systematic investigation of the design and environmental space is performed. The main contribution of this article is to identify the boundaries of feasibility for powering LoRaWAN sensor nodes from ambient RF energy. These boundaries include design and environmental factors.

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