Title :
A Low-Cost Microwave Moisture Sensor
Author :
Trabelsi, Samir ; Nelson, Stuart O. ; Ramahi, Omar
Author_Institution :
Agric. Res. Center, U.S. Dept. of Agric., Athens, GA
Abstract :
A low-cost microwave moisture sensor for granular materials operating at a single frequency of 5.8 GHz has been built and tested. The sensor principle is based on measurement of the two components of the relative complex permittivity. From these measurements, a density- and material-independent calibration function is calculated. The linear correlation between the calibration function and moisture provides moisture content in different materials independent of bulk density
Keywords :
calibration; granular materials; microwave measurement; moisture measurement; nonelectric sensing devices; permittivity; 5.8 GHz; corn; density- independent calibration; granular materials; low-cost microwave moisture sensor; material-independent calibration; moisture content; relative complex permittivity; sensor principle; wheat; Antenna measurements; Calibration; Density measurement; Microwave measurements; Microwave sensors; Moisture measurement; Permittivity measurement; Phase change materials; Prototypes; Thickness measurement; Moisture; complex permittivity; corn; density-independent calibration; microwave sensor; wheat;
Conference_Titel :
Microwave Conference, 2006. 36th European
Conference_Location :
Manchester
Print_ISBN :
2-9600551-6-0
DOI :
10.1109/EUMC.2006.281388
