Microwave resonator technique for moisture content and mass determination in single soybean seeds

Author

Kraszewski, Andrzej W. ; Nelson, Stuart O.

Author_Institution

Agric. Res. Service, US Dept. of Agric., Athens, GA, USA

Volume

43

Issue

3

fYear

1994

fDate

6/1/1994 12:00:00 AM

Firstpage

487

Lastpage

489

Abstract

Principles are presented relating to the use of a microwave resonant cavity for determining simultaneously the mass and moisture content of individual soybean seeds. Measurement of the resonant frequency shift and change in the transmission characteristics of the cavity when the soybean seed is inserted provides the necessary information for calculating the mass of water in the seed and the dry matter mass, from which the moist mass of the seed and its moisture content can be determined. Uncertainties of the measurements of mass and moisture content were 3 percent and less than 1 percent moisture content, wet basis, respectively, at the 95-percent confidence level

Keywords

cavity resonators; mass measurement; microwave measurement; moisture measurement; dry matter mass measurement; microwave resonant cavity; microwave resonator; moist mass measurement; moisture content; resonant frequency shift; soybean seeds; transmission characteristics; Ceramics; Coaxial components; Current measurement; Dielectric constant; Frequency measurement; Microwave theory and techniques; Moisture measurement; Position measurement; Resonance; Resonant frequency;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.293475

Filename

293475