A dual-core system solution for wearable health monitors

This paper presents a system design study for wearable sensor devices intended for healthcare and lifestyle applications based on ECG, EEG and activity monitoring. In order to meet the low-power requirement of these applications, a dual-core signal processing system is proposed which combines an ultra-low-power bio-medical Application Specific Instruction-set Processor (BioASIP) and a low-power general-purpose micro-controller (MSP430). To validate the merits of the proposed architecture, system-level power analysis and trade-offs are conducted using real hardware measurements of an ECG R-peak detection application. The results show that the proposed dual-core architecture consumes around 65.38µW, about 25.8x smaller than an MSP430-only approach. Out of 65.38µW, the BioASIP consumes only 11µW and the rest is used in the analog front-end, A/D conversion, and control tasks.

[1]  Refet Firat Yazicioglu,et al.  A 30µW Analog Signal Processor ASIC for biomedical signal monitoring , 2010, 2010 IEEE International Solid-State Circuits Conference - (ISSCC).

[2]  E. Fleury,et al.  Worldsens: Development and Prototyping Tools for Application Specific Wireless Sensors Networks , 2007, 2007 6th International Symposium on Information Processing in Sensor Networks.

[3]  Refet Firat Yazicioglu,et al.  A 60 $\mu$W 60 nV/$\surd$Hz Readout Front-End for Portable Biopotential Acquisition Systems , 2007, IEEE Journal of Solid-State Circuits.

[4]  Andreas Willig,et al.  Protocols and Architectures for Wireless Sensor Networks , 2005 .

[5]  Refet Firat Yazicioglu,et al.  A 200 $\mu$ W Eight-Channel EEG Acquisition ASIC for Ambulatory EEG Systems , 2008, IEEE Journal of Solid-State Circuits.

[6]  Paul S. Addison,et al.  Continuous Wavelet Transform Modulus Maxima Analysis of the Electrocardiogram: Beat Characterisation and Beat-to-Beat Measurement , 2005, Int. J. Wavelets Multiresolution Inf. Process..

[7]  J. Huisken,et al.  Ultra Low Power programmable biomedical SoC for on-body ECG and EEG processing , 2010, 2010 IEEE Asian Solid-State Circuits Conference.

[8]  Refet Firat Yazicioglu,et al.  A 60/spl mu/W 60 nV/Hz Readout Front-End for Portable Biopotential Acquisition Systems , 2006, 2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers.

[9]  Mladen Berekovic,et al.  Ultra Low Power ASIP Design for Wireless Sensor Nodes , 2007, 2007 14th IEEE International Conference on Electronics, Circuits and Systems.