Magnetic Measurement of Moisture Content of Grain

Author

Tsukada, Keiji ; Kiwa, Toshihiko

Author_Institution

Dept. of Electr. & Electron. Eng., Okayama Univ.

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2683

Lastpage

2685

Abstract

We developed a technique to magnetically measure the moisture content of grain. The measurement method developed consists of an exposure magnetic coil, and a magnetic resistance sensor. When the grain is exposed to alternating magnetic fields of low frequency, a secondary magnetic field generated from the grain is observed. Two kinds of grain with different water absorption abilities (nonglutinous rice and glutinous rice) were measured. The secondary magnetic field strength of the grain increased incrementally with the moisture content. The experimental result indicated the applicability of the developed magnetic measurement method for nondestructive moisture measurement

Keywords

agricultural products; diamagnetism; moisture measurement; magnetic coil; magnetic measurement method; magnetic resistance sensor; moisture content; nondestructive moisture measurement; secondary magnetic field strength; Coils; Electrical resistance measurement; Extraterrestrial measurements; Frequency; Magnetic field measurement; Magnetic properties; Magnetic variables measurement; Moisture measurement; Nuclear magnetic resonance; Ovens; Diamagnetism; grain; low frequency; moisture content;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.892853

Filename

4202952