Extensible Integrated System for Real-Time Monitoring of Cardiovascular Physiological Signals And Limb Health.

In recent decades, the rapid growth in flexible materials, new manufacturing technologies, and wearable electronics design techniques has help establish the foundations for noninvasive photoelectric sensing systems with shape-adaptability and "skin-like" properties. Physiological sensing includes humidity, mechanical, thermal, photoelectric, and other aspects. Photoplethysmography (PPG), an important non-invasive method for measuring pulse rate, blood pressure and blood oxygen, uses the attenuated signal obtained by the light absorbed and reflected from living tissue to a light source to realize real-time monitoring of human health status. Our work illustrates a patch-type optoelectronic system that integrates a flexible perovskite photodetector and all-inorganic light-emitting diodes to realize the real-time monitoring of human PPG signals. The pulse rate of the human body and the swelling degree of finger joints can be extracted and analyzed using photodetectors, thus monitoring human health for the prevention and early diagnosis of certain diseases. Specifically, we developed a 3D wrinkled-serpentine interconnection wire that increased the shape adaptability of the device in practical applications. The PPG signal sensor reported in this study has considerable potential for future wearable intelligent medical applications. This article is protected by copyright. All rights reserved.