Title :
Electroimpedance measurements of body composition employing the method of double sampling
Author :
Nawarycz, Tadeusz ; Pacholski, Krzysztof ; Kaczmarek, Jan ; Jankowski, Jerzy
Author_Institution :
Dept. of Biophys., Mil. Med. Acad., Lodz, Poland
fDate :
31 Oct-3 Nov 1996
Abstract :
The paper presents possibility of employing the method of double sampling of voltage and current signals in bioimpedance measurements. This method ensures the greater precision of determining the instantaneous value of the signal of periodic voltage (current) by elimination of an error, due to the sampling pulse length. Compared to other methods used in multifrequency detection circuits of bioimpedance analysers the presented method has a simple calculation algorithm and low cost of the meter circuit structure. The preliminary simulation study indicates usefulness of double sampling method in electroimpedance measurements of basal body components such as total body water, lean body mass or body fat
Keywords :
bioelectric phenomena; biomedical measurement; electric impedance measurement; basal body components; bioimpedance measurements; body composition; body fat; current signals; double sampling method; electroimpedance measurements; error elimination; lean body mass; meter circuit structure; multifrequency detection circuits; periodic voltage; sampling pulse length; simple calculation algorithm; simulation study; total body water; voltage signals; Bioimpedance; Circuits; Current measurement; Demodulation; Electrical resistance measurement; Impedance measurement; Pulse measurements; Sampling methods; Voltage measurement; Voltmeters;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.646326
