Adaptive reduction of motion artefact in wireless physiological monitoring microsystems

The effectiveness of ECG monitors can be significantly impaired by motion artefact, which can cause misdiagnoses, lead to inappropriate treatment decisions, and trigger false alarms. However, it is difficult to separate the noise from bio-signal due to its frequency spectrum overlapping that of the ECG. In this paper, we developed a wireless multi-sensor device for physiological signal monitoring, without any constraint of the belt. The device is attached to the belly. The skin temperature, ambulatory ECG, and respiration can be measured at the same time and shown via PC. The designed and implemented portable ECG recorder using accelerometer based on motion artefact removal technique was demonstrated for tele-homecare or ambulatory ECG monitoring.