Nondestructive inspection method for fruit quality based on dielectric property of fruit
Zhang Li · Journal of Zhejiang University of Technology · 2001
The method of nondestructive inspection for fruit quality based on dielectric property of fruit is studied. The polarization and loss mechanism of fruit's medium in the alternating electric field is discussed, and the equivalent model of nondestructive inspection for fruit quality based on macroscopical dielectric property parameters is founded. The inspection method of macroscopical dielectric property parameters is put forward. Apples and pears, as examples, are experimented at low frequency range (100 Hz～100 kHz), and the relation between their dielectric property parameters and their quality is studied. The results of experimentation indicate that dielectric property parameters of fruit is distinctly correlative with their quality, and therefore dielectric property parameters can be used for evaluating fruit's quality and automatically selecting fruit on line nondestructively.