Generating electricity while walking with loads

被引:509
作者
Rome, LC [1 ]
Flynn, L
Goldman, EM
Yoo, TD
机构
[1] Univ Penn, Dept Biol, Philadelphia, PA 19104 USA
[2] Marine Biol Lab, Woods Hole, MA 02543 USA
关键词
D O I
10.1126/science.1111063
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
We have developed the suspended-load backpack, which converts mechanical energy from the vertical movement of carried loads (weighing 20 to 38 kilograms) to electricity during normal walking [generating up to 7.4 watts, or a 300-fold increase over previous shoe devices (20 milliwatts)]. Unexpectedly, little extra metabolic energy (as compared to that expended carrying a rigid backpack) is required during electricity generation. This is probably due to a compensatory change in gait or loading regime, which reduces the metabolic power required for walking. This electricity generation can help give field scientists, explorers, and disaster-relief workers freedom from the heavy weight of replacement batteries and thereby extend their ability to operate in remote areas.
引用
收藏
页码:1725 / 1728
页数:4
相关论文
共 21 条
[1]  
ALEXANDER RM, 1991, J EXP BIOL, V160, P55
[2]   Muscle mechanical advantage of human walking and running: implications for energy cost [J].
Biewener, AA ;
Farley, CT ;
Roberts, TJ ;
Temaner, M .
JOURNAL OF APPLIED PHYSIOLOGY, 2004, 97 (06) :2266-2274
[3]  
Cavagna GA, 2002, J EXP BIOL, V205, P3413
[4]   MECHANICAL WORK IN TERRESTRIAL LOCOMOTION - 2 BASIC MECHANISMS FOR MINIMIZING ENERGY-EXPENDITURE [J].
CAVAGNA, GA ;
HEGLUND, NC ;
TAYLOR, CR .
AMERICAN JOURNAL OF PHYSIOLOGY, 1977, 233 (05) :R243-R261
[5]  
CAVAGNA GA, 1977, J PHYSIOL-LONDON, V268, P647, DOI DOI 10.1113/JPHYSI0L.1977.SP011866
[6]  
Donelan JM, 2002, J EXP BIOL, V205, P3717
[7]   Simultaneous positive and negative external mechanical work in human walking [J].
Donelan, JM ;
Kram, R ;
Kuo, AD .
JOURNAL OF BIOMECHANICS, 2002, 35 (01) :117-124
[8]  
DRAKE J, 2001, WIRED, V9, P90
[9]   Muscle oxygen uptake and energy turnover during dynamic exercise at different contraction frequencies in humans [J].
Ferguson, RA ;
Ball, D ;
Krustrup, P ;
Aagaard, P ;
Kjær, M ;
Sargeant, AJ ;
Hellsten, Y ;
Bangsbo, J .
JOURNAL OF PHYSIOLOGY-LONDON, 2001, 536 (01) :261-271
[10]   Comparison of kinematic and kinetic methods for computing the vertical motion of the body center of mass during walking [J].
Gard, SA ;
Miff, SC ;
Kuo, AD .
HUMAN MOVEMENT SCIENCE, 2004, 22 (06) :597-610