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A robust wireless system for capacitive ECG is presented, which measures electrode-body capacitive impedance, acceleration, and gyroscope signals from the electrodes to be used in motion artifact reduction algorithms. The system dynamically adapts its robustness and signal quality according to the environmental conditions. Optimizations including bias resistance and cancellation of common mode signals...
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.
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