Title :
Measuring moisture content in cookies using dielectric spectroscopy
Author :
Li, X. ; Zyuzin, A.S. ; Mamishev, A.V.
Author_Institution :
Sensors, Energy, & Autom. Lab., Univ. of Washington, Seattle, WA, USA
Abstract :
Real-time non-invasive moisture content sensing techniques are needed for online moisture measurement and control in food products. In this investigation, a dielectric spectroscopy based system is used for moisture determination in cookie dough. Experiments were conducted with a concentric ring dielectric sensor in the frequency range from 10 Hz to 10 kHz. The system is calibrated based on a linear model, where the functional dependence of capacitance on moisture content is determined. The calibrated system allows for both online moisture content sensing and moisture distribution profile imaging.
Keywords :
capacitive sensors; dielectric measurement; food products; moisture measurement; 10 Hz to 10 kHz; capacitance; concentric ring dielectric sensor; concentric sensor head; cookie dough; dielectric spectroscopy; food products; functional dependence; impedance measurements; linear model; moisture content measurement; online moisture measurement; parallel-plate capacitor; real-time noninvasive sensing; Capacitance; Capacitive sensors; Dielectric materials; Dielectric measurements; Electrochemical impedance spectroscopy; Electrodes; Food products; Frequency; Moisture measurement; Sensor phenomena and characterization;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2003. Annual Report. Conference on
Print_ISBN :
0-7803-7910-1
DOI :
10.1109/CEIDP.2003.1254892
