System and method for acquisition of biosignals with motion sensor-based artifact compensation

A method for acquisition of biosignals from a subject, comprising:

• receiving a measured biosignal from at least one biosensor worn over a first location of a body part of the subject;
• receiving a plurality of motion vector signals from a plurality of inertial motion sensors worn over a plurality of locations of the body part of the subject;
• calculating a reference motion signal from the received plurality of motion vector signals;
• and
• performing removal of motion artifacts affecting the measured biosignal,
• wherein at least one of the plurality of inertial motion sensors is mechanically connected to the at least one biosensor,
• wherein the reference motion signal comprises a relative motion vector signal indicating relative motion of the at least one biosensor with respect to the first location of the body part of the subject, and
• wherein calculating the relative motion vector signal comprises:
• calculating, with the received motion vector signals, an average motion vector of the body part of the subject;
• and
• performing a vectorial subtraction between (i) the motion vector signal of the inertial motion sensor that is mechanically connected to the at least one biosensor and (ii) the calculated average motion vector.

A non-transitory computer-readable storage medium comprising software program instructions stored thereon, wherein the software program instructions are executable by a microprocessor to perform a method for acquisition of biosignals from a subject, comprising:

• receiving a measured biosignal from at least one biosensor worn over a first location of a body part of the subject;
• receiving a plurality of motion vector signals from a plurality of inertial motion sensors worn over a plurality of locations of the body part of the subject;
• calculating a reference motion signal from the received plurality of motion vector signals;
• and
• performing removal of motion artifacts affecting the measured biosignal,
• wherein at least one of the plurality of inertial motion sensors is mechanically connected to the at least one biosensor,
• wherein the reference motion signal comprises a relative motion vector signal indicating relative motion of the at least one biosensor with respect to the first location of the body part of the subject, and
• wherein calculating the relative motion vector signal comprises:
• calculating, with the received motion vector signals, an average motion vector of the body part of the subject;
• and
• performing a vectorial subtraction between (i) the motion vector signal of the inertial motion sensor that is mechanically connected to the at least one biosensor and (ii) the calculated average motion vector.