tailieunhanh - báo cáo hóa học: " Development of a biomechanical energy harvester"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Development of a biomechanical energy harvester | Journal of NeuroEngineering and Rehabilitation Research Development of a biomechanical energy harvester Qingguo Li 1 Veronica Naing2 and J Maxwell Donelan2 BioMed Central Open Access Address Department of Mechanical and Materials Engineering Queen s University Kinston ON Canada K7L 3N6 and 2Department of Biomedical Physiology and Kinesiology Simon Fraser University Burnaby BC Canada V5A 1S6 Email Qingguo Li - qli@ Veronica Naing - vnaing@ J Maxwell Donelan - mdonelan@ Corresponding author Published 23 June 2009 Received 4 October 2008 Journal of NeuroEngineering and Rehabilitation 2009 6 22 doi 1743-0003-6-22 Accepted 23 June 2009 This article is available from http content 6 1 22 2009 Li et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Biomechanical energy harvesting-generating electricity from people during daily activities-is a promising alternative to batteries for powering increasingly sophisticated portable devices. We recently developed a wearable knee-mounted energy harvesting device that generated electricity during human walking. In this methods-focused paper we explain the physiological principles that guided our design process and present a detailed description of our device design with an emphasis on new analyses. Methods Effectively harvesting energy from walking requires a small lightweight device that efficiently converts intermittent bi-directional low speed and high torque mechanical power to electricity and selectively engages power generation to assist muscles in performing negative mechanical work. To achieve this our device used a one-way .