System and a method for acquisition of ECG signals with motion artifact reduction.

摘要

The invention relates to a biopotential signal acquisition system (100) comprising: an analogue readout unit (10) configured to receive an analogue biopotential signal (BS1), which may be acquired from at least one electrode attached to a body; and to extract an analogue measured biopotential signal (BS2) and an analogue reference signal (REF1); an ADC unit (20) configured to provide a digital version of the analogue measured biopotential signal (BS2) and the analogue reference signal (REF1); a digital filter unit (40) configured to calculate a digital motion artifact estimate (MA) based on the digital version of the measured biopotential signal (BS2) and the reference signal (REF1). The system further comprises a reference signal processing unit (30) configured to convert the reference signal (REF1) into a new reference signal (REF2) being provided to the digital filter unit (40) based on the correlation between the measured biopotential signal (BS2) and the reference signal (REF1). The invention also relates to an electronic device and a method for acquisition of biopotential signals.