Energy Income Estimation for Solar Cell Powered Wireless Sensor Nodes

Proceedings

Leclerc, Dominik¹  Mehne, Philipp²  Woias, Peter³ 

[1] Author to whom correspondence should be addressed.;Laboratory for the Design of Microsystems, Department of Microsystems Engineering—IMTEK, University of Freiburg, 79110 Freiburg, Germany;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018.

关键词: wireless sensor node;    energy management;    energy harvesting;    solar cell;    energy income estimation;   

DOI  :  10.3390/proceedings2131514

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Solar cells are one common choice to power energy-autonomous wireless sensor nodes (WSNs). There are different approaches to improve their service and reliability via solar energy prediction algorithms, to allow the WSN to “know” about the future energy income All these algorithms require information on the energy income of the sensor node obtained e.g., via separate measurements of light intensity or via monitoring the current flow to the WSNs energy storage. Here, we present a method to determine the energy income via temporarily switching the PV cell’s input current to a capacitor for determining the energy income by the accumulated charge. The data are compared to measurements with a pyranometer. This system provides advantages with respect to the consideration of the multiple different losses in the WSNs power management.

【 授权许可】

CC BY