Human Motion Energy Harvesting for AAL Applications

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Ylli, K.^1 ; Hoffmann, D.^1 ; Becker, P.^1 ; Willmann, A.^1 ; Folkmer, B.^1 ; Manoli, Y.^1,2

HSG, IMIT, Institute of Micromachining and Information Technology, Villingen-Schwenningen, Germany^1

Department of Microsystems Engineering-IMTEK, University of Freiburg, Germany^2

关键词: Active elements;    Ambient assisted living;    Ambient assisted living (AAL);    Compact devices;    Flat structures;    Mobile systems;    Research and development;    Supporting structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012024/pdf
DOI  :  10.1088/1742-6596/557/1/012024

来源: IOP

【 摘 要 】

Research and development into the topic of ambient assisted living has led to an increasing range of devices that facilitate a person's life. The issue of the power supply of these modern mobile systems however has not been solved satisfactorily yet. In this paper a flat inductive multi-coil harvester for integration into the shoe sole is presented. The device is designed for ambient assisted living (AAL) applications and particularly to power a self-lacing shoe. The harvester exploits the horizontal swing motion of the foot to generate energy. Stacks of opposing magnets move through a number of equally spaced coils to induce a voltage. The requirement of a flat structure which can be integrated into the shoe sole is met by a reduced form factor of the magnet stack. In order to exploit the full width of the shoe sole, supporting structures are used to parallelize the harvester and therefore increase the number of active elements, i.e. magnets and coils. The development and characterization of different harvester variations is presented with the best tested design generating an average power of up to 2.14 mW at a compact device size of 75 × 41.5 × 15 mm3including housing.