Программно-математическая модель емкостного датчика влажности кожи

Abstract

Skin humidity indicates the state of sympathetic and parasympathetic nervous systems. Quantitative representation of skin humidity helps to evaluate whether patient is affected by a disease. Analysis of electrical methods and devices of measuring skin moisture content was conducted. Based on this analysis, capacitive method of measuring skin moisture content was chosen as the most optimal for diagnostics of hyperhidrosis. A method for evaluation of capacitive sensor electrical parameters was developed. Utilizing COMSOL Multiphysics finite element analysis software environment, three sophisticated sensor geometries were created and simulated: an interdigital, cylindrical and rectangle geometries. According to obtained results, the most optimal geometry of interdigital capacitor was chosen as a base for future research