A Wearable Multisensory Pulse Sensor Based on Piezo-Thermic Transduction

Pulse signal contains important human physiological information for the auxiliary diagnosis of cardiovascular disease. Accurate measurement on pulse waveform is challenging due to its subtle, multi-peaks and preloading characteristics. This paper reports a novel wearable multisensory pulse sensor based on piezo-thermic transduction, which employs human natural skin in conjunction with a silver-particle reinforced porous polydimethylsiloxane (PDMS) membrane to transduce pulse pressure into thermo-attribute for highly-sensitive detection of radial artery pulse waves. The sensor demonstrate superior sensitivity and excellent linearity in a preload diagnostic measuring range, enabling continuous, and highly sensitive monitoring of radial pulse pressure wave, skin temperature, and wearing pressure for personal healthcare and medical diagnosis.