A Low-Cost Instrumented Shoe System for Gait Phase Detection based on Foot Plantar Pressure Data

Objective: This paper presents a novel low-cost and fully-portable instrumented shoe system for gait phase detection. Methods: The consists of 174 independent sensing units constructed based on an off-the-shelf force-sensitive film known as the Velostat conductive copolymer. A zero potential method was implemented to address crosstalk effect among matrix-formed arrays. customized algorithm event detection developed estimate stance sub-phases including initial contact, flat foot, push off. Experiments were carried out evaluate performance proposed in both straight-line walking turning walking. Results Conclusion: results showed that mean absolute time differences between estimated phases by reference measurement ranged from 45 58 ms during 51 77 walking, which comparable state art.