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Sci Rep:瑞士学者研发机械外骨骼能防老人意外滑倒

摘要 : 2017年5月10日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》杂志在线发表了瑞士洛桑联邦理工学院S. Micera研究员的一篇研究论文,研究描述了一种能帮助人们在意外滑倒后迅速恢复平衡的机械外骨骼。

2017年5月10日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》杂志在线发表了瑞士洛桑联邦理工学院S. Micera研究员的一篇研究论文,研究描述了一种能帮助人们在意外滑倒后迅速恢复平衡的机械外骨骼。研究人员表示,这一新型可穿戴设备能够用于协助老人、残疾人等行动不便的人士,以防他们摔倒。

可穿戴机器是可以直接穿在身上,或是整合到使用者的衣服或配件上的一种便携式设备。一般来讲,除了硬件设备属性,更突出的是,它还能通过软件支持以及数据交互、云端交互来实现强大的功能。

S. Micera及其同事研发的这种可穿戴机器名为活动性骨盆固定器(APO)。该机器利用特定算法,能迅速检测出穿戴者是否失去平衡,并在臀部产生一个抵消扭矩,以协助穿戴者平衡恢复。

8位被试者(平均年龄68.9岁)参与了此项研究。他们事先佩戴了安全带,接着被要求以个人偏好的速度在一台特制的跑步机上行走,这台跑步机会产生使人滑倒的故障。研究团队发现,由于APO有着“在需要时提供协助”的功能,当被试者穿戴了这一设备时,他们的稳定性获得了改善。但研究人员指出,这一结果必须在更多被试者身上得到进一步验证。

论文作者认为,他们的最新研究结果展示了可穿戴机器在滑倒时协助老年人和残疾人的潜力,从而有望极大改善他们的生活质量。而此类的机械外骨骼装备可以提供额外能量来供四肢运动,除了帮助老弱人士行动,还可以用于军事,保护士兵或辅助通信、侦查,甚至救援身处险境的人员。

原文链接:

An ecologically-controlled exoskeleton can improve balance recovery after slippage

原文摘要:

The evolution to bipedalism forced humans to develop suitable strategies for dynamically controlling their balance, ensuring stability, and preventing falling. The natural aging process and traumatic events such as lower-limb loss can alter the human ability to control stability significantly increasing the risk of fall and reducing the overall autonomy. Accordingly, there is an urgent need, from both end-users and society, for novel solutions that can counteract the lack of balance, thus preventing falls among older and fragile citizens. In this study, we show a novel ecological approach relying on a wearable robotic device (the Active Pelvis Orthosis, APO) aimed at facilitating balance recovery after unexpected slippages. Specifically, if the APO detects signs of balance loss, then it supplies counteracting torques at the hips to assist balance recovery. Experimental tests conducted on eight elderly persons and two transfemoral amputees revealed that stability against falls improved due to the “assisting when needed” behavior of the APO. Interestingly, our approach required a very limited personalization for each subject, and this makes it promising for real-life applications. Our findings demonstrate the potential of closed-loop controlled wearable robots to assist elderly and disabled subjects and to improve their quality of life.

来源: Scientific Reports 浏览次数:0

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