A Feasibility Study on Energy Harvesting from Soil Temperature Differences
| Autor: | Ulf Kulau, Lars Wolf, Robert Hartung, Sven Pullwitt |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010308 nuclear & particles physics
020206 networking & telecommunications 02 engineering and technology 01 natural sciences Automotive engineering Power (physics) Temperature gradient Thermoelectric generator Soil temperature 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Environmental science Load model Energy source Energy harvesting Wireless sensor network |
| Zdroj: | RealWSN@SenSys |
| DOI: | 10.1145/3277883.3277886 |
| Popis: | With regard to the growing number of wireless sensor network (WSN) and IoT long-term applications, energy harvesting becomes more and more popular i.a. due to the economical advantages compared to classical energy sources. Outdoor deployments for e.g. smart farming applications usually rely on solar-powered harvesters but this is not sufficient in any case. During previous outdoor deployments we observed, that soiling or shadowing by plants makes solar cells infeasible for ground-level sensors.We also observed that thermoelectric generators (TEGs) might be an alternative when utilizing the temperature gradient between the ground and the soil. Hence, this paper presents a longterm measurement as well as a feasibility study whether a WSN could be supplied by this approach. We collected and analysed data of more than a year and show the total amount as well as the characteristics of harvestable energy.Finally a load model of a typical WSN application is used to evaluate its performance and, therefore, to prove that energy harvesting from soil temperature differences is a realistic solution to power nodes and networks. |
| Databáze: | OpenAIRE |
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