A sampling multichannel bioimpedance analyzer for tissue monitoring

The paper focuses on principles of designing of a multichannel bioimpedance analyzer based on simultaneous multisine measurement. The measurement task arises due to the need to monitor patients during and after heart surgery operation performing MIMO (multiple-input-multiple-output) bioimpedance mea...

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Bibliographic Details
Published inThe 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Vol. 1; pp. 902 - 905
Main Authors Min, M., Land, R., Martens, O., Parve, T., Ronk, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2004
Subjects
Bioimpedance
Digital signal processing
Frequency conversion
Frequency synthesizers
Impedance
Monitoring
multichannel measurement
multifrequency measurement
sampling
Sampling methods
Signal analysis
signal processing
Signal sampling
Voltage
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Summary:The paper focuses on principles of designing of a multichannel bioimpedance analyzer based on simultaneous multisine measurement. The measurement task arises due to the need to monitor patients during and after heart surgery operation performing MIMO (multiple-input-multiple-output) bioimpedance measurement. Frequencies of the simultaneously applied sinusoidal excitations must be close but simultaneously varied in a larger range (e.g. from 1 kHz up to 10 MHz). The main idea of the proposed approach is that the use of a rather specific signal system (frequencies of sinusoidal excitations are related as integers and sampling frequencies are properly related/adapted to them) makes it possible to separate responses to different excitations from the measured summary signals by means of a quite simple filter and different (under) sampling rates.
ISBN:0780384393
9780780384392
DOI:10.1109/IEMBS.2004.1403305