Grain Moisture Content Measurement System Based on Time-Domain Transmission Technology

Zhi Min Tong; Li Hong Rong; Cao Jun Huang

doi:10.4028/www.scientific.net/AMM.241-244.214

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 241-244Grain Moisture Content Measurement System Based on...

Grain Moisture Content Measurement System Based on Time-Domain Transmission Technology

Abstract:

To measure the grain moisture content with time-domain transmission technology (TDT), electromagnetic wave propagation characteristics was studied to find the relationship of electromagnetic wave propagation and the dielectric parameters of grain. Basic structure of measurement sensor was designed to be coaxial transmission line based on TDT theories. The main parameters of the sensor were calculated. The measurement circuit was designed based on processing theories of high frequency electromagnetic signals. Grain samples with different moisture contents were measured by both TDT system and the standard drying method. The results show that TDT system with Quadratic curve measurement model is of desired measurement accuracy.

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Periodical:

Applied Mechanics and Materials (Volumes 241-244)

Pages:

214-217

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.241-244.214

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Online since:

December 2012

Authors:

Zhi Min Tong, Li Hong Rong, Cao Jun Huang

Keywords:

Electromagnetic Measurement, Moisture Content of Grain, Moisture Measurement, TDT Method

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References

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