Acquisition and analysis of tremor signals using force and accelerometer sensors

The aim of this paper is to achieve an analysis of the postural tremor hands function by the palmar gripping forces, using a novel device based on three capacitive force sensors and a 3D accelerometer, for healthy persons. Two categories of persons took part in the test: people who use their hands intense in daily activities (workers) - the first category, and people who perform daily activities that not require hard physical activity. The force and the acceleration data were sampled for each person and FFT transform was applied to analyze the frequency spectra of the tremor when increasing the palmar gripping force.