Towards building an accurate low-cost biofeedback platform using force sensors

Abstract

This paper details the design and development of a biofeedback platform. The platform is customizable; it has a load cell slider allowing the user to change the location of the load cells. A 24-bit sigma-delta ADC is used to interface with the load cells, these values are then transmitted to a computer via a microcontroller. The load cell values are extracted and scaled in real-time. The individual load cell weights, total weight and center of pressure is displayed on the computer monitor. Experiments confirm that the load cells and ADC used in the biofeedback platform was highly accurate and responsive. A simple game was then developed, giving the user some physical exercise, also known as exergaming.