Session T3B: Tutorial: A self-powered biomedical SoC for wearable health care

Abstract

This talk will focus on Systems-on-Chip (SoCs) presented as part of the UAE SRC (Semiconductor Research Corp) Center of Excellence on Energy Efficient Electronic Systems (aka ACE4S http://www.src.org/program/grc/ace4s/) involving researchers from 5 UAE Universities looking at developing new technologies aiming at innovative self-powered wireless sensing and monitoring SoC platforms. The research targets applications in self-powered chip sets for use in public health, ambient intelligence, safety and security and water quality. ACE4S is the first SRC center of excellence outside the US. One such application, which we will discuss in details, is a novel SoC platform for wearable health care. More specifically we will present a novel fully integrated ECG signal processing system for the prediction of ventricular arrhythmia using a unique set of ECG features extracted from two consecutive cardiac cycles. Two databases of the heart signal recordings from the American Heart Association (AHA) and the MIT PhysioNet were used as training, test and validation sets to evaluate the performance of the proposed system. The system achieved an accuracy of 99%. The ECG signal is sensed using a flexible, dry, MEMS-based technology and the system is powered up by harvesting human thermal energy. The system architecture is implemented in Global foundries' 65 nm CMOS process, occupies 0.112 mm2 and consumes 2.78 micro Watt at an operating frequency of 10 KHz and from a supply voltage of 1.2V. To our knowledge, this is the first SoC implementation of an ECGbased processor that is capable of predicting ventricular arrhythmia hours before the onset and with an accuracy of 99%.