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This paper describes the circuits and signal
processing techniques that convert an electronic bathroom scale intended for bioimpedance analysis (BIA) into a compact system to acquire the electrocardiogram (ECG), the ballistocardiogram (BCG), and the impedance plethysmogram (IPG) using only
plantar measurements. The signal processing methods proposed rely on the higher quality of the IPG as compared to the ECG and BCG and they enhance the signal-to-noise ratio (SNR) of these two signals, which otherwise could be too poor in noncontrolled
environments. The system is suitable for long-term periodic monitoring of cardiovascular function.
CitationGomez, J.; Casanella, R.; Pallas, R. Multi-signal bathroom scale to assess long-term trends in cardiovascular parameters. A: IEEE Engineering in Medicine and Biology Society. "34th Annual International Conference of the IEEE EMBS. San Diego, California USA, 28 August - 1 September, 2012". San Diego, California: IEEE, 2012, p. 550-553.
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