存储时间与频率对芒果介电特性影响的研究

Effect of Storage Time and Frequency on Mango's Dielectric Properties

为了探索存储时间与频率对芒果介电特性影响,构建了基于介电特性的芒果无损检测系统,测量了在不同存储时间和不同频率下的芒果的相对介电常数,探讨了频率及存储时间对芒果的介电特性的影响。研究得出结论:在室温为25℃,湿度为80%的条件下,随着频率的增加,芒果的相对介电常数减小,而芒果的损耗因子也随着频率的增加而减小;随存储时间延长,芒果的相对介电常数及损耗因子呈现先降低后增加的变化趋势。

In order to explore the influence of storage time and frequency to mango dielectric properties, the mango nondestructive testing system based on the dielectric properties was constructed. The relative dielectric constant of mango was measured in different storage time and frequencies, and the influence of frequency and storage time to mango dielectric properties was discussed. Experiment results showed that at room temperature of 25℃ and humidity of 80%, the relative dielectric constant of mango reduced with the increase of frequency, and the loss factor also decreased. With the extension of storage time, the mango relative dielectric constant and the loss factor presented a change trend of increase first and decrease later.