Powering lights with piezoelectric energy harvesting floors

Journal article


Puscasu,O., Counsell, N., Herfatmanesh, M., Peace, R., Patsavellas, J. and Day, R. (2018). Powering lights with piezoelectric energy harvesting floors. Energy Technology. 6 (5), pp. 906-916. https://doi.org/10.1002/ente.201700629
AuthorsPuscasu,O., Counsell, N., Herfatmanesh, M., Peace, R., Patsavellas, J. and Day, R.
Abstract

The present work introduces a new technology for converting energy from steps into electricity. It starts with a study of the mechanical energy available from steps in a busy corridor. The subsequent development efforts and devices are presented, with an iterative approach to prototyping. Methods for enhancing the piezoelectric conversion efficiency have been determined as a part of the process and are introduced in the present article. Capitalizing on these findings, we have fabricated energy-harvesting devices for stairs that power embedded emergency lighting. The typical working unit comprises an energy-harvesting stair nosing, a power management circuit, and an embedded light-emitting diode that lights the tread in front of the user with an illuminance corresponding to emergency standards. The stair nosing generates up to 17.7 mJ of useful electrical energy per activation to provide up to 10.6 seconds of light. The corresponding energy density is 0.49 J per meter square and per step, with an 8.5 mm thick active layer.

Year2018
JournalEnergy Technology
Journal citation6 (5), pp. 906-916
PublisherTaylor & Francis
ISSN2194-4296
Digital Object Identifier (DOI)https://doi.org/10.1002/ente.201700629
Publication dates
Online06 May 2018
Publication process dates
Deposited24 Jan 2024
Accepted author manuscript
License
File Access Level
Open
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