Insole Gait Acquisition System Based on Wearable Sensors

Abstract

Human gait analysis is a growing field of research interest in medical treatment, sports training and structural health monitoring. In our study, we propose a low-cost insole design with wearable sensors based on piezoelectric discs (PZT) and an inertial measurement unit (IMU) to acquire the human gait. The sensors are placed at three points of a shoe sole: toe, metatarsal and heel. The human gait obtained from such an insole layout is significantly affected by plantar pressure distribution and alignment of the feet. The PZT sensors give an insight into the pressure map under the feet, and the IMUs record projection and orientation of the feet.

Enhancing Piezoelectricity of Silk Fibroin Through In Situ Growth of Metal‐Free Perovskite for Organic and Eco‐friendly Wearable Bioelectronics

“…[ 1–3 ] Researchers have made diligent efforts over the years to primarily exploit piezoelectric perovskites and organic piezopolymers for the development of high‐performance wearable sensors. [ 4–8 ] Nevertheless, the issues related to the biotoxicity, leaching, and instability of these materials challenge their wider implementation and acceptance for biomedical use. [ 9–13 ] Non‐biodegradability further adds environmental and economic burden in terms of toxic waste generation and high recycling costs.…”