Design of Portable Non-contact Physiological Data Acquisition System

With the improvement of living standards, there is an increasing focus on individual health conditions. Benefiting from technological advancements, non-contact physiological detection methods based on facial videos have transitioned from laboratory settings to everyday life. Due to its convenience, non-invasiveness, and contactless nature, this method exhibits extensive prospects. This paper presents the design and implementation of a remote vital signs monitoring system characterized by portability, real-time data collection, data processing and analysis, as well as storage capabilities. Multiple sensor circuits are meticulously designed, and factors influencing the accuracy of Remote Photoplethysmography (rPPG) are compared and analyzed. The paper also outlines the key directions for noise removal algorithms to enhance accuracy.