Room-Wide Wireless Power Transfer and Low-Power Communication for IoT

Typical IoT systems suffer from the limited energy capacity of each node and the high communication cost. To achieve long-term operation of IoT systems, (i) ubiquitous wireless power transfer (WPT), which delivers power to nodes placed anywhere in the room and (ii) communication architectures, which minimizes the energy consumption of the nodes are necessary. To provide these missing pieces, we developed a wireless power/data transfer system, which co-exists on the 3-D magnetic field channel generated by a room-scale quasistatic cavity resonator (QSCR).

従来のIoTシステムには各ノードの電池容量が小さい、通信コストが大きいといった課題が存在した。長期的に運用できるIoTシステムの実現のためには、部屋内のあらゆる位置にあるノードへ安全に電力が供給できるユビキタスな無線給電と、ノードの消費電力を最小化する通信機構が不可欠となる。そこで我々は、準静空洞共振器(QSCR)の三次元状に分布する磁界を用いた無線給電と省電力通信を行うためのIoTノード/システムを開発した。

PUBLICATIONS

  1. T. Sasatani, CJ. Yang, M. J. Chabalko, Y. Kawahara, and A. P. Sample, “Room-Wide Wireless Charging and Load-Modulation Communication via Quasistatic Cavity Resonance,” PACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (ACM IMWUT), Dec. 2018 (To Appear)