Wearable Piezoelectric Airflow Transducers for Human Respiratory and Metabolic Monitoring.

ABSTRACT: Despite the importance of respiration and metabolism measurement in daily life, they are not widely available to ordinary people because of sophisticated and expensive equipment. Here, we first report a straightforward and economical approach to monitoring respiratory function and metabolic rate using a wearable piezoelectric airflow transducer (WPAT). A self-shielded bend sensor is designed by sticking two uniaxially drawn piezoelectric poly l-lactic acid films with different cutting angles, and then the bend sensor is mounted on one end of a plastic tube to engineer the WPAT. The airflow sensing principle of the WPAT is theoretically determined through finite element simulation, and the WPAT is calibrated with a pulse calibration method. We prove that the WPAT has similar accuracy (corre

SUBMITTER: Jin L 

PROVIDER: S-EPMC9425556 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature