Key result
An adaptive analogue calibration method using a PID controller continuously compensated for electrode-skin impedance mismatch and significantly improved electromagnetic interference attenuation.
Why the study?
Existing methods for biopotential signal acquisition often require offline manual calibration to address electrode-skin impedance mismatch and motion artefacts.
A novel adaptive analogue calibration method improves biopotential recordings like ECG by compensating for motion artefacts and reducing electromagnetic interference without manual calibration.
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May enhance ambulatory ECG quality; leaves open clinical validation and outcome impact.
Karmakar et al. (2020) studied Biopotential signal acquisition. Adaptive analogue calibration method vs. Previously reported EMI-immune electrode mismatch compensating front-ends was evaluated on Compensation of electrode-skin impedance mismatch and EMI attenuation. An adaptive analogue calibration method using a PID controller continuously compensated for electrode-skin impedance mismatch and significantly improved electromagnetic interference attenuation.
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