Journal
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
Volume 1, Issue 4, Pages 250-257Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TBCAS.2008.915633
Keywords
Capacitive ECG; magnetic induction; heart; lungs; monitoring; signal processing
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This paper describes two methods for noncontact monitoring of heart and lung activity, namely magnetic bioimpedance monitoring and capacitive electrocardiogram ( ECG) recording. In principle, both methods bear the potential for mobile application in a personal healthcare scenario. To illustrate their performance, prototypes for both methods have been developed and first results are presented. Finally, the fundamental drawbacks and limitations of these methods are discussed, including a detailed stability analysis of the capacitively coupled right leg in capacitive ECG measurements with mismatching electrode capacities and the development of an adaptive noise canceller for magnetic bioimpedance monitoring based on a nonlinear signal coupling model.
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