@inbook {15873, title = {Real-Time PPG-Based HRV Implementation Using Deep Learning and Simulink}, booktitle = {Technological Innovation for Digitalization and Virtualization}, year = {2022}, publisher = {Springer, Cham.}, organization = {Springer, Cham.}, author = {Esgalhado, F and Batista, A and Vassilenko, V. and Ortigueira, M.} }