Research Article
Overpotential-Based Battery End-of-Life Indication in WSN Nodes
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@INPROCEEDINGS{10.1007/978-3-319-04166-7_3, author={Thomas Menzel and Adam Wolisz}, title={Overpotential-Based Battery End-of-Life Indication in WSN Nodes}, proceedings={Sensor Systems and Software. 4th International ICST Conference, S-Cube 2013, Lucca, Italy, June 11-12, 2013, Revised Selected Papers}, proceedings_a={S-CUBE}, year={2014}, month={6}, keywords={Battery Overpotential WSN End-of-Life Indication Estimation}, doi={10.1007/978-3-319-04166-7_3} }- Thomas Menzel
Adam Wolisz
Year: 2014
Overpotential-Based Battery End-of-Life Indication in WSN Nodes
S-CUBE
Springer
DOI: 10.1007/978-3-319-04166-7_3
Abstract
Indicating the imminent battery depletion of wireless sensor nodes is beneficial for many applications. But corresponding depth of discharge estimation approaches are either complex, constraint or rather imprecise. We present, implement and evaluate a novel approach which is to observe the battery’s overpotential - the change of the voltage under a load in comparison to the unloaded battery - which increases toward the end of a battery’s lifetime. Experimental evidence that the battery’s overpotential is a better “end-of-life” indicator than the commonly used operating voltage is provided. Also, it does neither require any additional circuitry in typical sensor nodes nor significant processing overhead.
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