Designing of a Low Cost GSR Acquisition System and Estimation of Stress Level from the Acquired Signal
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 10
Abstract
Galvanic skin response provides us information about the electro-dermal activity i.e. the electrical characteristics of the skin. The electro-dermal activity or the skin conductance is an indication of psychological or physiological arousal which can give and indirect response of physiological stress. From Ohms law (V=IR) if we can keep the current constant and vary the resistance we can get a voltage output corresponding to the resistance ,hence a circuit was made so that the current can be made constant and the resistance was measured from the subject in respect to voltage output from the acquisition system. A best feed linear curve was made with some known resistance and hence a linear equation was developed for knowing unknown resistance of the skin and hence giving idea about the stress of the subject. Thus a system is designed for knowing the skin resistance and in terms giving an idea of the emotional stress of the subject who was taken into consideration.
Authors and Affiliations
Pratik Das, Sukumar Roy
Keywords
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