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A battery-powered multisensor acquisition system with five dedicated channels [electrocardiograph (50 $\mu \text{W}$ ), bioimpedance (46 $\mu \text{W}$ ), galvanic skin response (15 $\mu \text{W}$ ), and 2$\times $ photoplethysmogram (134 $\mu \text{W}$ ) is presented. It includes an ARM Cortex M0, analog and digital filters, timestamp converter and sample rate converter (SRC), and generic interfaces...
A combined method to reduce motion artifact (MA) and power line interference (PLI) for wearable healthcare system is introduced. The proposed method has a block for the reduction of MA using measured electrode-skin impedance as a reference signal and a block for the cancellation of PLI using mixed-signal feedback to relax the dynamic range requirements of components in the forward path. The measured...
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