Low Cost Frequency Independent Induction Sensor for Low Concentration (ppm) D(+)-Glucose Monohydrate Detection

A low cost induction sensor that is independent of the input source frequency is designed, constructed, and tested for low concentration of aqueous Glucose-D solutions in ppm range detection. A balanced Alternating Current (AC) Owens full bridge is adopted for the measurement. The induction sensor u...

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Bibliographic Details
Published inSensors & transducers Vol. 135; no. 12; pp. 118 - 125
Main Authors Hor, Yew Fong, Ooi, Hio Giap, Lim, Hee C
Format Journal Article
LanguageEnglish
Published Toronto IFSA Publishing, S.L 01.12.2011
Subjects
Glucose
Induction sensor
Mortality
Non-invasive
Owens’ bridge
ppm
Receivers & amplifiers
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Summary:A low cost induction sensor that is independent of the input source frequency is designed, constructed, and tested for low concentration of aqueous Glucose-D solutions in ppm range detection. A balanced Alternating Current (AC) Owens full bridge is adopted for the measurement. The induction sensor used is a small solenoid coil with low matching impedance. A model of the induction coil sensitivity is simulated using CST Studio Suite with a mesh size of approximately 1.5 million 3D tetrahedron cells with GPUs. The induction sensor is highly sensitive and is capable to measure Millipore Milli-Q low resistivity (18.2 MOhm cm) ultrapure water as well as varies different prepared Glucose-D solutions in nV range with the help of the phase-lock-loop lock-in amplifier via a Labview program. The data acquisition is acquired using a custom-programmed Labview program. The calculated induction sensor sensitivity is -1.716 ? 10" /ppm with high correlation constant R = 0.9571 in terms of Glucose-D concentration. [PUBLICATION ABSTRACT]
ISSN:2306-8515
1726-5479