The Change Law of Electrical Physical Quantity of Rice with Different Moisture
In order to explore the relationship between moisture of high moisture rice and electrical physical quantity,the feasibility of electrical physical quantity in rapid detection of moisture content of high moisture rice was explored.The high moisture rice(23.14％moisture)was taken as the research object.The LCR impedance tester was used to measure 13 electrical physical quantities of rice with different moisture content at signal frequency 1-8 MHz.The results showed that the phase Angle,loss coefficient,dielectric constant and equivalent parallel capacitance of impedance had good correlation with the water content of rice.In the frequency range of 1-8 MHz,the phase Angle and loss coefficient of the impedance of rice increased first and then decreased with the increase of frequency,and the dielectric constant and equivalent parallel capacitance increased with the increase of frequency.At the frequency of 1 MHz,the equivalent parallel capacitance of rice had a better correlation with its water content(R2=0.998).By studying the electrical physical quantity of rice with different moisture,it provides a theoretical basis for developing a rapid detection technology using electrical physical quantity to predict the moisture content of rice.
high moisture ricemoisturefrequencyelectrical physical quantityregression model analysis
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