TY - GEN
T1 - Design of a microcontroller based Cole-Cole impedance meter for testing biological tissues
AU - Solmaz, Hakan
AU - Ülgen, Yekta
AU - Tümer, Murat
PY - 2009
Y1 - 2009
N2 - Complex impedance measurement of biological systems is gaining wide popularity in determining the pathological and physiological status of tissues in research areas such as; body fat content, blood freshness, tissue ischemia, skin hydration, and etc. In this study we designed a four-probe, multi-frequency, portable Cole-Cole impedance meter based on the magnitude-ratio and phase-difference detection principles. The system is built around a sine-wave generator, a voltage controlled current source, a phase-gain detector and a microcontroller unit. The Cole-Cole parameters, namely R0, R∞, fc and α and the extracellular fluid and intracellular fluid resistances, Re and Ri are also calculated and directly displayed by the device. Device accuracy is checked against the HP 4284A LCR meter under different RC test loads that simulate physiological measurements.
AB - Complex impedance measurement of biological systems is gaining wide popularity in determining the pathological and physiological status of tissues in research areas such as; body fat content, blood freshness, tissue ischemia, skin hydration, and etc. In this study we designed a four-probe, multi-frequency, portable Cole-Cole impedance meter based on the magnitude-ratio and phase-difference detection principles. The system is built around a sine-wave generator, a voltage controlled current source, a phase-gain detector and a microcontroller unit. The Cole-Cole parameters, namely R0, R∞, fc and α and the extracellular fluid and intracellular fluid resistances, Re and Ri are also calculated and directly displayed by the device. Device accuracy is checked against the HP 4284A LCR meter under different RC test loads that simulate physiological measurements.
KW - Bioimpedance
KW - Cole-Cole parameters
KW - Magnitude-ratio and phase-difference detection
UR - http://www.scopus.com/inward/record.url?scp=77949778019&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-03885-3_135
DO - 10.1007/978-3-642-03885-3_135
M3 - Conference contribution
AN - SCOPUS:77949778019
SN - 9783642038846
T3 - IFMBE Proceedings
SP - 488
EP - 491
BT - World Congress on Medical Physics and Biomedical Engineering
PB - Springer Verlag
T2 - World Congress on Medical Physics and Biomedical Engineering: Diagnostic and Therapeutic Instrumentation, Clinical Engineering
Y2 - 7 September 2009 through 12 September 2009
ER -