CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 12951 > Article
Presentation
10 May 2024 Time-of-flight photoplethysmography (TOF-PPG) offers accurate and robust monitoring of heart rate
V. N. Du Le
Author Affiliations +
Proceedings Volume 12951, Health Monitoring of Structural and Biological Systems XVIII; 1295119 (2024) https://doi.org/10.1117/12.3012188
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States
Abstract
Commercial Photoplethysmography (PPG) sensors such as Apple Watch, Fitbit Versa and Polar series rely on the measurement of Continuous-Wave Diffuse Reflection Signal (CW-DRS) from skin to monitor heart rate. However, such techniques have poor depth sensitivity when considering photons from deep dermis where capillary vessels are found, or end-users with darker skin tones; and are prone to Source-Detector Distance (SDD). Using Monte Carlo modeling of light propagation in skin, we closely evaluate the dependence of Continuous-Wave Photoplethysmography (CW-PPG) in commercial wearables on SDD. Ultimately, we introduce the concept of Time-of-Flight PPG (TOF-PPG) which can produce outstanding accuracy over CW-PPG. Moving forward, these results will provide a valuable source for hypothesis generation for TOF-PPG artificial intelligence to correct CW-PPG without extra cost.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
V. N. Du Le "Time-of-flight photoplethysmography (TOF-PPG) offers accurate and robust monitoring of heart rate", Proc. SPIE 12951, Health Monitoring of Structural and Biological Systems XVIII, 1295119 (10 May 2024); https://doi.org/10.1117/12.3012188
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Photoplethysmography
Heart
Photons
Skin
Chemical vapor deposition
Continuous wave operation
Geometrical optics
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top