System and Method for Acquisition of Biopotential Signals with Motion Artifact Reduction in Real Time Operation

摘要

A biopotential signal acquisition system comprising an analogue readout unit configured to receive an analogue biopotential signal and to extract an analogue measured biopotential signal and an analogue reference signal, and an ADC unit configured to provide a digital version of the analogue measured biopotential signal and the analogue reference signal. The system also includes a first digital filter unit comprising a cascaded integrator-comb filter configured to provide a first digital filtered version of the digital measured biopotential signal and the reference signal, and a second digital filter unit configured to calculate a digital motion artifact estimate based on the first digital filtered version signals.

主权项

1. A biopotential signal acquisition system comprising:
an analogue readout unit configured to receive an analogue biopotential signal and to extract an analogue measured biopotential signal and an analogue reference signal; an ADC unit configured to provide a digital measured biopotential signal from the analogue measured biopotential signal and a digital reference signal from the analogue reference signal; a first digital filter unit including a cascaded integrator-comb filter configured to provide first digital filtered version signals of each of the digital measured biopotential signal and the digital reference signal; and a second digital filter unit configured to calculate a digital motion artifact estimate based on the first digital filtered version signals.