Wearable Device for Measuring EDA in Constant Alternating Current

Abstract

This article introduces a novel wearable device, the multisensor wearable wristband (MsW2), designed to measure electrodermal activity (EDA) and skin temperature using constant ac current instead of the usual constant ac voltage measurement method. Adapted from a previous headband model, MsW2 has been optimized for wrist-based applications. Its efficacy was validated through experiments with 25 participants, comparing its EDA measurements with the Empatica E4 device. The results demonstrated high coherence between the two systems. Additionally, a simplified skin impedance model was proposed and validated, providing a reliable means of analyzing EDA data. The wearable demonstrates significant potential for applications in emotion detection, health monitoring, and more.