Weight-bearing, measured in real time.
Project, Jan to Jul 2025
Patients told to put only part of their weight on an injured leg have no way to know how much they actually are. This insole measures it on every step.
±3%load accuracy after calibration
ESP32wireless telemetry
C++embedded firmware
t-testspaired validation with power analysis
One step, sensor by sensor
Force-sensitive resistors under the heel, midfoot and forefoot pick up load as it rolls from heel to toe. Their sum is compared to the prescribed limit in real time.
Load now, % body weight0%
Within limit
Illustrative sensor layout and gait. Real sensor count and placement to come.
Calibration
Each force sensor was calibrated against known loads and fit with a regression model, bringing total load error to ±3%.
Validation
Paired t-tests and a power analysis compared insole readings to reference measurements, with data streamed to a cloud-connected mobile app.