Shveda Rachel A, Rajappan Anoop, Yap Te Faye, Liu Zhen, Bell Marquise D, Jumet Barclay, Sanchez Vanessa, Preston Daniel J
Department of Mechanical Engineering, William Marsh Rice University, Houston, TX 77005, USA.
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
Sci Adv. 2022 Aug 26;8(34):eabo2418. doi: 10.1126/sciadv.abo2418. Epub 2022 Aug 24.
Wearable assistive, rehabilitative, and augmentative devices currently require bulky power supplies, often making these tools more of a burden than an asset. This work introduces a soft, low-profile, textile-based pneumatic energy harvesting system that extracts power directly from the foot strike of a user during walking. Energy is harvested with a textile pump integrated into the insole of the user's shoe and stored in a wearable textile bladder to operate pneumatic actuators on demand, with system performance optimized based on a mechano-fluidic model. The system recovered a maximum average power of nearly 3 W with over 20% conversion efficiency-outperforming electromagnetic, piezoelectric, and triboelectric alternatives-and was used to power a wearable arm-lift device that assists shoulder motion and a supernumerary robotic arm, demonstrating its capability as a lightweight, low-cost, and comfortable solution to support adults with upper body functional limitations in activities of daily living.
目前，可穿戴辅助、康复和增强型设备需要庞大的电源，这往往使这些工具更多地成为一种负担而非资产。这项工作介绍了一种柔软、低调、基于纺织品的气动能量收集系统，该系统在用户行走时直接从脚步撞击中提取能量。能量通过集成在用户鞋底内的纺织泵进行收集，并存储在可穿戴的纺织气囊中，以便根据需求操作气动执行器，系统性能基于机械流体模型进行了优化。该系统以超过20%的转换效率回收了近3瓦的最大平均功率，优于电磁、压电和摩擦电替代方案，并被用于为一个辅助肩部运动的可穿戴手臂提升装置和一个额外的机器人手臂供电，展示了其作为一种轻便、低成本且舒适的解决方案的能力，以支持日常生活中上身功能受限的成年人。
