A wireless sensor node architecture using remote power charging, for interaction applications

The wireless sensor node architecture proposed inthis paper is optimized for use in a wireless interactivepoint, listen and see system. In particular, we focus ondeveloping a wireless sensor node that can beremotely charged by harvesting microwave energy.The current system implementation allows a user toaccess information from a remote sensor via theirmobile computing device. These sensors are limited incomplexity due to the limited power available, and arecumbersome since manual intervention is required toreplace its batteries. We propose a system wherebattery powered wireless sensor nodes can berecharged by harvesting energy from a microwaveRadio Frequency (RF) signal source. The remotepower charging module of the wireless sensor nodearchitecture consisted of an antenna array and arectification circuit. A prototype of the antenna arrayand rectification circuit of the remote power chargingmodule for the wireless sensor node was constructedand is presented in this paper.