An ECG-on-chip with joint QRS detection & data compression for wearable sensors

This paper presents a low power 3-lead ECG-on-Chip with real-time QRS detection and lossless data compression for wearable wireless ECG sensors. The proposed chip uses a novel approach that embeds the data compression in the heart beat (QRS) detection process leading to improved energy efficiency. The proposed technique achieves an average compression ratio (CR) of 2.15x and a peak detection sensitivity (Se) of 99.58% and positive productivity (+P) of 99.57%. The chip consumes only 960nW for QRS detection and data compression for 2-channel of ECG making it the lowest power chip.