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

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

447

Lastpage

450

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281388

Filename

4057846