Meander Coil++: wireless charging using a safe and efficient clothing coil for continuous wearable computing
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- TAKAHASHI Ryo
- The University of Tokyo
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- YUKITA Wakako
- The University of Tokyo
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- YOKOTA Tomoyuki
- The University of Tokyo
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- SOMEYA Takao
- The University of Tokyo
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- KAWAHARA Yoshihiro
- The University of Tokyo
Bibliographic Information
- Other Title
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- 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
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- Computer Software
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Computer Software 40 (3), 3_113-3_122, 2023-07-25
Japan Society for Software Science and Technology
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Details 詳細情報について
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- CRID
- 1390860222070469760
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- ISSN
- 02896540
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Disallowed