A 17nA, 47.2dB Dynamic Range, Adaptive Sampling Controller for Online Data Rate Reduction in Low Power ECG Systems

被引：0

作者：

Pamula, V. Rajesh ^{[1
,2
]}

Verhelst, Marian ^{[1
]}

Van Hoof, Chris ^{[1
,2
]}

Yazicioglu, Refet Firat ^{[2
]}

机构：

[1] Katholieke Univ Leuven, ESAT MICAS, Leuven, Belgium

[2] IMEC, Leuven, Belgium

来源：

PROCEEDINGS OF 2016 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE (BIOCAS) | 2016年

关键词：

Adaptive Sampling; Constant Group Delay Filter; Data Compression; Electrocardiogram;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

An ultra-low power adaptive sampling controller is presented for online data reduction in low power ECG systems. The proposed adaptive sampling controller dynamically adapts the sampling frequency to enables high quality acquisition of QRS complexes in ECG signals for accurate heartbeat detection and heart rate variability analysis at significantly reduced average sampling rate. To compensate for the latency in the detection of the QRS complex and adaptation of the sampling frequency, a delay element is introduced in the signal path. The proposed adaptive sampling controller is implemented in TSMC 0.18 mu m CMOS technology, consumes only 17nA and achieves a dynamic range of 47.2dB while enabling a compression ratio (CR) of 6 (corresponding to 83% data rate reduction) with a percentage root mean square distortion (PRD) of 3.2% averaged across 20 records from the MIT-BIH arrhythmia database.

引用

页码：272 / 275

页数：4