AA size micro power conversion cell for wireless applications

Abstract

This paper presents the preliminary design and experimental results of a standard AA size vibration-induced micro energy transducer which is integrated with a -power-management circuit. The transducer is a spring mass system which uses SU-8 molding and MEMS electroplating technologies fabricated copper springs to convert mechanical energy into electrical power by Faraday's Law of Induction. We have shown that when the MPG is packaged into an AA battery size container along with a power-management circuit that consists of rectifiers and a capacitor, it is capable of producing -1.6V DC when charged for less than Imin. Potential applications for this micro power generator to serve as a power supply for a wireless temperature sensing system was proved to be possible with input frequencies at about IOOHz and amplitudes be approximately 250microns.

Energy Harvesting for Structural Health Monitoring Sensor Networks

“…Yuen et al [ 53 ] developed an electromagnetic-based micro energy converter that can be packaged into an AA battery-size container. The device was used to serve as a power supply for a wireless temperature sensing system.…”

Modeling of linear micro electromagnetic energy harvesters with nonuniform magnetic field for sinusoidal vibrations

“…the change of the magnetic flux that the coil experiences as a result of the relative motion with respect to the magnet. The coil in EMEHs is either a wound (Glynne-Jones et al 2004;Yuen et al 2004;Beeby et al 2007) or a planar (Serre et al 2009;Wang et al 2009;Yang and Lee 2010) type, however, the latter more easily lends itself to integration with the planar micro-fabrication processes.…”