Meander Coil++: wireless charging using a safe and efficient clothing coil for continuous wearable computing

DOI

Bibliographic Information

Other Title
  • メアンダコイル++：継続的なウェアラブルコンピュータのための安全で効率的な衣類コイルによる無線給電

Abstract

<p>Wearable devices for life-logging and healthcare have been studied, but the need for frequent charging imposes inconvenience for long-term use. Integrating textile-based wireless chargers (i.e., coil) into clothing enables sustainable wearable computing by charging the on-body devices in use. However, the electromagnetic field generated by conventional coil chargers strongly interferes with the human body, and the high resistance of conductive threads leads to inefficient power delivery. This paper presents Meander Coil++, enabling safe, energy-efficient, and body-scale wireless power delivery. Meander Coil++ uses a wiring pattern that suppresses electromagnetic exposure to the human body without compromising power delivery performance and a liquid-metal-based low-loss conductive cord. With these advancements, Meander Coil++ could transmit up to 2.5W power to on-body devices with 1/400 size of charging area at 40% AC-to-AC efficiency while complying with international safety guidelines regarding electromagnetic exposure.</p>

Journal

  • Computer Software

    Computer Software 40 (3), 3_113-3_122, 2023-07-25

    Japan Society for Software Science and Technology

Details 詳細情報について

  • CRID
    1390860222070469760
  • DOI
    10.11309/jssst.40.3_113
  • ISSN
    02896540
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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