Insole Detection System for Plantar Pressure Measuring

Abstract

Plantar pressure could reflect a person's gait to a certain extent. With various plantar pressure distribution gained, we can estimate the proper plantar pressure distributions, which could help us ameliorate the design of shoe, improve the gait of diabetic offloading patients, and promote the development of kinematic robot. In this paper, an insole detection system for measuring plantar pressure distribution was developed. The system instrument is installed in the shoe, and it transmits data to PC wirelessly, so there is very little Interference to the subject's nature gait. With tactile sensor dot matrix in the sole under a person's feet, this system collects an array of signals which reflects the plantar pressure distribution. Then, the MCU processes the received array of signals and transmits them to a PC as master wirelessly. With this information the PC provides a two, three dimensional or pseudo color graph of the plantar pressure distribution and the judgment of the gait to the researchers. The system has such advantages as automation, small size, low power consumption and convenient application.