System and Method for Acquisition of Biopotential Signals with Motion Artifact Reduction

摘要

A biopotential signal acquisition system including an analogue readout unit configured to receive an analogue biopotential signal, which may be acquired from at least one electrode attached to a body; and to extract an analogue measured biopotential signal and an analogue reference signal. The system also includes an ADC unit configured to provide a digital version of the analogue measured biopotential signal and the analogue reference signal, a digital filter unit configured to calculate a digital motion artifact estimate based on the digital version of the measured biopotential signal and the reference signal. The system further comprises a reference signal processing unit configured to convert the reference signal into a new reference signal being provided to the digital filter unit based on the correlation between the measured biopotential signal and the reference signal.

主权项

1. A biopotential signal acquisition system comprising:
a readout unit configured to receive an analogue biopotential signal and to extract, from that received analogue biopotential signal, a measured biopotential signal and a first reference signal; a reference signal processing unit configured to convert the first reference signal into a second reference signal based on the correlation between the measured biopotential signal and the first reference signal; and a digital filter unit configured to calculate a digital motion artifact estimate based on a digital version of the measured biopotential signal and the second reference signal.