Hellström Thomas, Lindahl Olof, Bäcklund Tomas, Karlsson Marcus, Hohnloser Peter, Bråndal Anna, Hu Xiaolei, Wester Per
a Department of Computing Science, University Hospital of Northern Sweden and Community Medicine and Rehabilitation, Umeå University , Umeå , Sweden ;
b Department of Radiation Sciences/Biomedical Engineering, University Hospital of Northern Sweden and Community Medicine and Rehabilitation, Umeå University , Umeå , Sweden ;
J Med Eng Technol. 2016 Jul;40(5):270-9. doi: 10.3109/03091902.2016.1167973. Epub 2016 Apr 14.
An intelligent rollator (IRO) was developed that aims at obstacle detection and guidance to avoid collisions and accidental falls. The IRO is a retrofit four-wheeled rollator with an embedded computer, two solenoid brakes, rotation sensors on the wheels and IR-distance sensors. The value reported by each distance sensor was compared in the computer to a nominal distance. Deviations indicated a present obstacle and caused activation of one of the brakes in order to influence the direction of motion to avoid the obstacle. The IRO was tested by seven healthy subjects with simulated restricted and blurred sight and five stroke subjects on a standardised indoor track with obstacles. All tested subjects walked faster with intelligence deactivated. Three out of five stroke patients experienced more detected obstacles with intelligence activated. This suggests enhanced safety during walking with IRO. Further studies are required to explore the full value of the IRO.
研发了一种智能助行器（IRO），其目的是进行障碍物检测和引导，以避免碰撞和意外跌倒。IRO是一种经过改装的四轮助行器，配备嵌入式计算机、两个电磁制动器、车轮上的旋转传感器和红外距离传感器。计算机将每个距离传感器报告的值与标称距离进行比较。偏差表明存在障碍物，并导致其中一个制动器启动，以影响运动方向从而避开障碍物。七名视力受限和视力模糊的健康受试者以及五名中风患者在设有障碍物的标准化室内跑道上对IRO进行了测试。所有测试对象在智能功能关闭时行走速度更快。五名中风患者中有三名在智能功能开启时检测到更多障碍物。这表明使用IRO行走时安全性得到了提高。需要进一步研究以探索IRO的全部价值。
