Hristo Radev is currently a full-time assistant professor in Department of Electronics, Faculty of Electronics and Automation at Technical University of Sofia, Plovdiv Branch. He received the M.S. degree in Medical Radiation Physics and Technology from University of Plovdiv, in 2008. His current research interests include medical instrumentation, noninvasive sensor devices, vital signs monitoring, embedded systems, pcb design, EMC/EMI.

Galidiya Petrova is currently a full-time professor in Department of Electronics, Faculty of Electronics and Automation at Technical University of Sofia, Plovdiv Branch. She received the M.S. degree in Electronics and Ph.D. degree in Biomedical engineering from Technical University of Sofia, Bulgaria, in 1985 and 2001, respectively. Her current research interests include medical instrumentation, IoT medical devices, noninvasive sensor devices, body sensor networks, vital signs monitoring with a particular focus on unobtrusive monitoring of driver’s physiological parameters. Prof. Petrova is a member of IEEE Measurement and Instrumentation Society, and Biomedical engineering Society.