Experimental Prediction of Oblique Walking Angle on Slope by Foot Dynamics Sensor Measurement

In this study, an insole sensor measuring both pressure and shear force from the foot sole is used to predict the walking angle of a pedestrian on slopes. This wearable device, which is operable outdoors, is anticipated to be useful not only for daily health checks but also as a tool for monitoring motor function over time. By capturing variations in gait and foot dynamics across diverse surfaces, including flat, sloped, and stair environments, it can offer insight into how a user’s balance and coordination adjust in real-world settings. Prior research has demonstrated success in estimating surface types based solely on plantar pressure data, albeit limited to straight, instructed walking paths. This study expands on that by incorporating shear force to assess whether a pedestrian is walking straight or obliquely on slopes, addressing more realistic, spontaneous walking patterns. Looking ahead, this sensor technology has the potential to become a critical tool for early detection of gait abnormalities or balance issues that may be linked to age, neurological conditions, or recovery status post-injury. Such real-time monitoring could support clinicians in designing personalized rehabilitation programs, while users could benefit from proactive alerts to shifts in motor function that may warrant attention.