Photoplethysmography in wearable devices: a comprehensive review of technological advances, current challenges, and future directions
Photoplethysmography (PPG) is an affordable and straightforward optical technique used to
detect changes in blood volume within tissue microvascular beds. PPG technology has …
detect changes in blood volume within tissue microvascular beds. PPG technology has …
Distance Estimation Based on Step Frequency Using Accelerometer Data
RM Al-Naimat, KM Harahsheh, CH Chen - 2024 - researchsquare.com
In recent years, smartphone sensors have become one of the most important and easily
available sensors to facilitate people's lives, especially in health care and positioning …
available sensors to facilitate people's lives, especially in health care and positioning …