Automated measurement system based on digital intertial sensors for the study of human body movement

An implementation of an independent recording system based on MEMS sensors controlled by a microcontroller, for measuring human body movement parameters, is presented in this paper. The developed system uses two pairs of 3D accelerometers and gyroscopes, in order to determine the exact position of a joint by measuring the relative position of the two adjoined segments. The use of such a system can provide joint kinematic information overcoming shortcomings of video based motion analysis systems. Normal and pathological gait data are presented.