Method of determining the moisture content of grain

Details Method of determining the moisture content of grain Method of determining the moisture content of grain

1998-10-08

1999-08-10

Melius, Terry Lee

Crop threshing or separating

Means responsive to a sensed condition

Moisture

460149, 56 102B, 56DIG15, A01F 1200

Patent

active

059349972

ABSTRACT:
A microwave grain monitor determines grain density and moisture content without measuring the phase shift of the measurement signal in passing through the grain. A set of grain coefficients is determined and stored in a non-volatile memory. A microwave measurement signal is transmitted through the grain and the ambient temperature is sensed. The grain density and moisture content are determined from the attenuation of the measurement signal in passing through the grain, the sensed temperature and the set of grain coefficients.

REFERENCES:
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patent: 5480354 (1996-01-01), Sadjadi
patent: 5685772 (1997-11-01), Anderson et al.
patent: 5716272 (1998-02-01), Nelson
Microwave Monitoring Moisture Content in Grain-Further Consideration; International Microwave Power Institute; 1988; vol. 23 No. 4, 1988; pp. 236-246.
Use of a Density Indepenndent Function and Microwave Measuremen System for Grain Moisture Measurement 1988 Am. Society of Agricultural Eng.; vol. 31(6); Nov.-Dec. 1988.
Microwave Moisture Measurement of Grains; IEEE Transactions on Instrumentation and Measurement; vol. 41, No. 1, Feb. 1992; pp. 111-115.
Density-Independent Microwave Measurement of Moisture Content in Static and Flowing Grain; 1993 Am. Society of Agricultural Engineers; vol. 36(3) May -Jun.; pp. 827-835.
Microwave Sensors for Process Control Part I; Transmission Sensors; Ray J. King, KDC Technology Corp.; Sensors, Sep. 1992; pp. 68-74.

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