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Multi-source energy harvesting and storage for floating wireless sensor network nodes with Long Range Communication Capability

  • Wireless sensor networks are widely used for environmental monitoring in remote areas. They are mainly composed of wireless sensor nodes, usually powered by batteries with limited capacity, but are expected to communicate in long range and operate for extended time periods. To overcome these limitations, many energy harvesting techniques are proposed to power wireless nodes for prolonged operation, whereas multihop techniques are utilized to extend the communication range. In this paper, a novel floating device with multisource energy harvesting technology that can be used as a wireless sensor node is proposed. The long range communication between wireless sensor nodes and a gateway is established through LoRa technology. In addition to conventional solar panels, an energy harvesting technique based on thermoelectric generators exploiting thermal differences created between water surface and materials exposed to sunlight is proposed. Energy generated from photovoltaic and thermoelectric generators is combined to power the wireless sensor node. This floating device consumes 6.6216 Wh per day when used as a wireless sensor node for the collection and transmission of environmental data. The sensor node can operate on a water surface for at least 9.6 days when it is not exposed to sunlight. During a sunny day, the floating device can harvest 8.375 Wh from solar panels and 0.425 Wh from thermoelectric generation. In other words, the floating device harvests sufficient energy to be self-sustaining during sunny days.

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Metadaten
Author:Wai-Kong Lee, Martin J. W. Schubert, Boon Yaik OoiORCiD, Stanley Jian-Qin Ho
DOI:https://doi.org/10.1109/TIA.2018.2799
Parent Title (English):IEEE Transactions on Industry Applications
Publisher:IEEE
Document Type:Article
Language:English
Year of first Publication:2018
Release Date:2021/05/21
Tag:Energy harvesting; LoRa; Wireless sensor networks; floating device; sensor node; solar energy; thermoelectric generation
Volume:54
Issue:3
First Page:2606
Last Page:2615
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Elektronik
Begutachtungsstatus:peer-reviewed
research focus:Energie und Mobilität
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG