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An analog signal processor ASIC for ECG signals is presented. In addition to the power efficient extraction of ECG signals, it proposes an adaptive sampling scheme for data reduction, continuous-time electrode-tissue impedance monitoring for sensing motion artifacts, and band-power extraction for beat detection. The ASIC operates on a 2 V supply.
An ECG signal processing method with quad level vector (QLV) is proposed for the ECG holter system. The ECG processing consists of the compression flow and the classification flow, and the QLV is proposed for both flows to achieve better performance with low-computation complexity. The compression algorithm is performed by using ECG skeleton and the Huffman coding. Unit block size optimization, adaptive...
This paper discusses ultra-low-power wireless sensor nodes intended for wearable biopotential monitoring. Specific attention is given to mixed-signal design approaches and their impact on the overall system power dissipation. Examples of trade-offs in power dissipation between analog front-ends and digital signal processing are also given. It is shown how signal filtering can further reduce the internal...
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