期刊
SMART MATERIALS AND STRUCTURES
卷 26, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/aa6cec
关键词
biomechanical energy; energy harvester; knee-mounted; bi-directional; enhanced efficiency; safety
资金
- Research Grants Council of Hong Kong Special Administrative Region, China [CUHK 14204614]
- Shenzhen Science and Technology Innovation Committee [CYZZ20140903120028974]
Energy harvesting is becoming a major limiting issue for many portable devices. When undertaking any activity, the human body generates a significant amount of biomechanical energy, which can be collected by means of a portable energy harvester. This energy provides a method of powering portable devices such as prosthetic limbs. In this paper, a knee-mounted energy harvester with enhanced efficiency and safety is proposed and developed to convert mechanical energy into electricity during human motion. This device can change the bidirectional knee input into uni-directional rotation for an electromagnetic generator using a specially designed transmission system. Without the constraint of induced impact on the human body, this device can harvest biomechanical energy from both knee flexion and extension, improving the harvesting efficiency over previous single-direction energy harvesters. It can also provide protection from device malfunction, and increase the safety of current biomechanical energy harvesters. A highly compact and light prototype is developed taking into account human kinematics. The biomechanical energy harvesting system is also modeled and analyzed. The prototype is tested under different conditions including walking, running and climbing stairs, to evaluate the energy harvesting performance and effect on the human gait. The experimental results show that the prototype can harvest an average power of 3.6 W at 1.5 m s(-1) walking speed, which is promising for portable electronic devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据