Study for detection of moisture-distribution of large grain pile using dielectric constant method
Qing Li · Computer Engineering and Applications Journal · 2012
Aiming at the problem of lacking effect moisture detection method for large grain pile,it proposes a new method using electromagnetic wave detection to overcome the shortcomings of traditional methods such as poor precision,complexity and so on.Based on the principles of reflection and refraction of electromagnetic wave on different media interface,it obtains the dielectric constant of grain surface,according to the law of reflection and refraction,it uses the surface dielectric constant to infer the distribution of dielectric constant in other grain lays,and based on a permittivity-moisture model,it transforms the permittivity distribution into the moisture distribution,thus,to simulate a whole grain pile moisture distribution.This method has the advantages such as high precision,quick detection and so on,which helps to improve the level of moisture detection for large grain pile.