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Determination of the Mass of Cereals by the Use of Electromagnetic Fields
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Paper number 033022, 2003 ASAE Annual Meeting . (doi: 10.13031/2013.13841) @2003
Authors: H.G.J. Snell, W. Lücke
Keywords: wheat, cereals, mass, radio-frequency, weight estimation
The experiments were carried out with a commercially available radio-frequency (RF)
application device. It consists of three components: The generator, the applicator and the matching
unit. The main function of the latter is that the unit is working without any power reflection to the
generator after a short moment of calibration. At that moment the voltage between the capacitor
plates U, load position AL and tune position AT are adjusted to different characteristics of the material
in the applicator. The load and tune positions, AL and AT, are dimensionless specific parameters of
the RF unit, which describe the status of the matching unit.