Microwave based wheat grain kernel characterisation

Author

Chua, H.S. ; Haigh, A.D. ; Thompson, F. ; Gibson, A.A.P.

Author_Institution

Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK

fYear

2003

fDate

8-9 Sept. 2003

Firstpage

27

Lastpage

30

Abstract

A low-cost microwave source and detector is designed to drive a microwave cylindrical cavity to determine the wet mass and moisture content of single wheat grain kernels. Differences in wet mass and moisture content can be distinguished from the changes in resonant frequency and attenuation. Moisture content (8% to 16%) of single wheat grain kernels was measured. Experimental results are presented and the calibration equations are implemented in a microcontroller. Wet mass and moisture content are shown on an LCD display on the microcontroller. The measurement procedure and evaluation of the system are presented in the proposed paper.

Keywords

agricultural products; liquid crystal displays; microcontrollers; microwave detectors; statistical distributions; LCD display; microcontroller; microwave cylindrical cavity; microwave detector; microwave source; moisture content; wet mass; wheat grain kernels; Calibration; Equations; Kernel; Microcontrollers; Moisture; Permittivity measurement; Resonance; Resonant frequency; Shape measurement; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

High Frequency Postgraduate Student Colloquium, 2003

Print_ISBN

0-7803-8123-8

Type

conf

DOI

10.1109/HFPSC.2003.1242299

Filename

1242299