System for examination of human movement system dysfunctions

The paper presents the concept of an electronic system of multiple sensors measuring chosen parameters of human’s motion. Set of such sensors continuously measure the position, speed, acceleration, vibrations and trembles of human’s body parts and sends this data to the central computer, where it stored and processed. The structure and principle of operation of the limb motion sensor, which consists of an accelerometer, gyroscope, magnetometer and microcontroller, was described. The article also presents the construction of a measuring station for testing the developed limb motion single sensor. The measured signal was analyzed using a Fast Fourier Transform (FFT) method analyzing harmonics of periodic vibrations. The results of the research have proved that it is possible to detect vibrations of frequency and amplitude that are typical for patients with motion dysfunctions, e.g. with Parkinson's disease.