학과소식/커뮤니티

department of electronic engineering
sogang university

세미나

Wearable e-health: from electrodes to on-chip signal processing and powering
  • 2023.05.19
  • 359

 

Title: Wearable e-health: from electrodes to on-chip signal processing and powering 

Abstract: 
Wearable eHealth targets to mitigate the impact of chronic diseases by providing continuous yet adequate monitoring and analysis of physiological signals. However, the wearable environment is challenging for circuit designers due to its unstable skin-electrode interface, huge mismatch, and static/dynamic offset. Also, as the human body absorbs most of the RF energy around the GHz band, existing RF radio may not be ideal for the communications between and on-body sensors. From the system perspective, a trade-off between available resources and performance among the components is crucial. Most importantly, powering wearables is a burden as the number of wearables increases.

To address these issues, this talk will cover the design strategies of wearable eHealth System-on-Chip (SoC). We will first check how to set the right system design goal. After that, we will explore the limitations and potential pitfalls in wearable interface circuit design and strategies to overcome such issues. Several state-of-the-art instrumentation amplifiers that emphasize different parameters will be discussed. Moving on, we will cover the feature extraction and the patient-specific classification using the on-chip Machine Learning technique. To power the wearables, I will introduce the Body-Coupled Powering (BCP), which utilizes the human body itself as a communication/powering medium; BCP has orders of magnitude less pathloss when compared to RF in the BAN environment. Finally, as a system example, an on-chip patient-specific epilepsy detection System-on-Chip (SoC) will be presented, which integrates all the components covered during the talk. The talk will conclude with interesting aspects and opportunities that lie ahead.

#일시 및 장소: 2023년 5월 30일 오전 10시, K관 304호 

Biography: Jerald Yoo (jyoo@nus.edu.sg)
 


Jerald Yoo received the B.S., M.S., and Ph.D. degrees in the Department of Electrical Engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea, in 2002, 2007, and 2010, respectively. 

 From 2010 to 2016, he was with the Department of Electrical Engineering and Computer Science, Masdar Institute, Abu Dhabi, United Arab Emirates, where he was an Associate Professor. From 2010 to 2011, he was also with the Microsystems Technology Laboratories (MTL), Massachusetts Institute of Technology (MIT) as a visiting scholar. Since 2017, he has been with the Department of Electrical and Computer Engineering, National University of Singapore, Singapore, where he is currently an Associate Professor. He has pioneered researches on low-energy body-area-network (BAN) transceivers and wearable body sensor networks using the planar-fashionable circuit board for a continuous health monitoring system. He authored book chapters in Biomedical CMOS ICs (Springer, 2010) and in Enabling the Internet of Things—From Circuits to Networks (Springer, 2017). His current research interests include low-energy circuit technology for wearable bio-signal sensors, flexible circuit board platform, BAN transceivers, ASIC for piezoelectric Micromachined Ultrasonic Transducers (pMUT) and System-on-Chip (SoC) design to system realization for wearable healthcare applications.
  Dr. Yoo served as an IEEE Circuits and Systems Society (CASS) Distinguished Lecturer (2019-2021) as well as an IEEE Solid-State Circuits Society (SSCS) Distinguished Lecturer (2017-2018). He is the recipient or a co-recipient of several awards: IEEE International Solid-State Circuits Conference (ISSCC) 2020 Demonstration Session Award (Certificate of Recognition), IEEE International Symposium on Circuits and Systems (ISCAS) 2015 Best Paper Award (BioCAS Track), ISCAS 2015 Runner-Up Best Student Paper Award, the Masdar Institute Best Research Award in 2015 and the IEEE Asian Solid-State Circuits Conference (A-SSCC) Outstanding Design Award (2005). He was the founding vice-chair of IEEE SSCS United Arab Emirates (UAE) Chapter, and currently is the chair of the IEEE SSCS Singapore Chapter. Currently, he serves as a Technical Program Committee Member of the IEEE International Solid-State Circuits Conference (ISSCC), ISSCC Student Research Preview (SRP, co-chair) and IEEE Asian Solid-State Circuits Conference (A-SSCC, Emerging Technologies and Applications Subcommittee Chair). He also served as the subcommiteee chair at IEEE Custom Integrated Circuits Conference (CICC). He is also an Analog Signal Processing Technical Committee Member of IEEE Circuits and Systems Society, and an Associate Editor of IEEE Transactions on Biomedical Circuits and Systems as well as IEEE Open Journal of Solid-State Circuits Society (OJ-SSCS). He is a senior member of IEEE.