Aqueveque Pablo, Pastene Francisco, Osorio Rodrigo, Gomez Britam, Ortega-Bastidas Paulina
Annu Int Conf IEEE Eng Med Biol Soc. 2020 Jul;2020:4676-4679. doi: 10.1109/EMBC44109.2020.9175927.
In this work, a new custom wireless capacitive step sensor and a real-time algorithm are proposed to detect the start and end of the swing phase of the gait to trigger the stimulation in Functional Electrical Stimulator devices (FES) for Drop Foot. For this, an array of capacitive pressure sensors was designed to detect patterns of the gait swing phase through the Heel Center of Pressure (HCOP). The proposed system recognized all the events with an average error of 20.86±0.02[ms] for the heel strike (initial contact) and 27.60±0.03[ms] for the heel-off (final contact) compared with lower-back accelerometer, constituting a viable, robust and promising alternative as a step sensor for functional electrical stimulators.
在这项工作中，提出了一种新型定制无线电容式步传感器和一种实时算法，用于检测步态摆动期的开始和结束，以触发用于足下垂的功能性电刺激器（FES）中的刺激。为此，设计了一个电容式压力传感器阵列，通过足跟压力中心（HCOP）来检测步态摆动期的模式。与腰部加速度计相比，所提出的系统识别所有事件时，足跟触地（初始接触）的平均误差为20.86±0.02[毫秒]，足跟离地（最终接触）的平均误差为27.60±0.03[毫秒]，这构成了一种可行、稳健且有前景的替代方案，可作为功能性电刺激器的步传感器。
