Rome Lawrence C, Flynn Louis, Goldman Evan M, Yoo Taeseung D
Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.
Science. 2005 Sep 9;309(5741):1725-8. doi: 10.1126/science.1111063.
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.
我们研发了一种背负式悬浮负载装置，它能在正常行走过程中将所背负的重物（重量为20至38千克）的垂直运动机械能转化为电能[可产生高达7.4瓦的电量，相比之前的鞋类装置（20毫瓦）提高了300倍]。出乎意料的是，发电过程中几乎不需要额外的代谢能量（与背负刚性背包时消耗的能量相比）。这可能是由于步态或负载方式的补偿性变化，从而降低了行走所需的代谢功率。这种发电方式有助于让野外科学家、探险家及救灾人员摆脱更换电池的沉重负担，进而延长他们在偏远地区的作业能力。
