Human-motion energy harvester for autonomous body area sensors
| Description | |
| Date | |
| Authors | Geisler M., Boisseau S., Perez M., Gasnier P., Willemin J., Ait-Ali I., Perraud S. |
| Year | 2017-0155 |
| Source-Title | Smart Materials and Structures |
| Affiliations | Univ. Grenoble Alpes, Grenoble, France, CEA, Leti, Minatec Campus, 17 rue des Martyrs, Grenoble Cedex 9, France, CityzenSciences, 208 rue Garibaldi, Lyon, France, CEA, Liten, 17 rue des Martyrs, Grenoble Cedex 9, France |
| Abstract | This paper reports on a method to optimize an electromagnetic energy harvester converting the low-frequency body motion and aimed at powering wireless body area sensors. This method is based on recorded accelerations, and mechanical and transduction models that enable an efficient joint optimization of the structural parameters. An optimized prototype of 14.8 mmØ ×52 mm, weighting 20 g, has generated up to 4.95 mW in a resistive load when worn at the arm during a run, and 6.57 mW when hand-shaken. Among the inertial electromagnetic energy harvesters reported so far, this one exhibits one of the highest power densities (up to 730 ?W cm-3). The energy harvester was finally used to power a bluetooth low energy wireless sensor node with accelerations measurements at 25 Hz. © 2017 IOP Publishing Ltd. |
| Author-Keywords | body area sensor nodes, electromagnetic conversion, energy harvesting, low-frequency |
| Index-Keywords | Electromagnetic waves, Sensor nodes, Structural optimization, Bluetooth low energies (BTLE), Electromagnetic conversion, Energy Harvester, Joint optimization, Low-frequency, Power densities, Structural parameter, Wireless sensor node, Energy harvesting |
| ISSN | 9641726 |
| Link | Link |