Skin conductance analyzing in function of the bio-signals monitored by biomedical sensors

Abstract

This paper presents the test of skin electrical conductance (SC) in function of temperature and body physiology. It is known that the skin presents electrodermal response and becomes a good conductor of electricity when an external or internal stimulus occurs. For measuring the skin moisture and temperature we used humidity and temperature smart sensors. The data acquisition system used, consist of sensors, signal conditioning circuitry and the analog to digital converter. For discretization of the continuous signal and lower power consumption we sampled the digital signal e after 30 seconds. We propose the sampling of the digital signals. For measuring the skin conductivity we applied a small voltage (0.5 V) across these electrodes. The experimental part is based on recording the values of the humidity and temperature change in function of the resistance variation. The correlation between these value is very important in medical analysis of diabetes for patients and medical staff and for studying the user comfort for cloths designed for sport area.