A multifunctional device as both strain sensor and energy harvester for structural health monitoring
Proceedings of IEEE Sensors
Institute of Electrical and Electronics Engineers (IEEE)
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In the context of wireless sensors (WSs) autonomous in energy, this paper presents a single macro-fiber composite (MFC) piezoelectric transducer which is used for the first time as a multifunctional device as both sensor and energy harvester in a time-multiplexing manner. The MFC is used as an energy harvester to charge up a storage capacitor. When there is sufficient energy, the WS is powered up and the MFC is used as a sensor. A circuit was implemented to harvest energy from the MFC and use the MFC as a sensor. Experiment validation shows that the MFC has an accuracy of up to 97 % as sensor and the circuit harvests energy from the MFC at its maximum power point with up to 98 % efficiency.
This work was financially supported by EPSRC (EP/K017950)
This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.
IEEE Sensors 2016, 2016-10-30, 2016-11-03, Orlando, Florida