The Use of Artificial Sensors in Fes Gait Re-education System

In the paper the sensory system for a FES gait reeducation system is proposed. The gait training orthosis for incomplete spinal cord injured patients is being developed. Sensory feedback and walking phase detection are the most important parts of the orthosis. Implementation of several types of sensors into the rehabilitative system can make it more reliable. Four accelerometers, gyroscope and two goniometers were used in the measurement system. Data collected by the sensors were input into mathematical algorithms. As a reference measurement device an optical position measurement system was used. The data collected were analyzed offline in order to develop a suitable walking phase detection. In order to choose the appropriate sensors, the assessments were performed in three healthy subjects. The results have shown a need and advantages of the multisensor use. The appropriate feedback signal will be delivered to the patient who will voluntarily control the functional electrical stimulation.