METHOD OF MEASURING INTERNAL TEMPERATURE OF FROZEN OBJECT AND DEVICE FOR MEASURING INTERNAL TEMPERATURE OF FROZEN OBJECT

摘要

The present invention provides a method of measuring the internal temperature of a frozen object that can accurately measure the internal temperature of frozen assorted food. The method of measuring the internal temperature of a frozen object, which includes a plurality of assorted frozen foods having a granular shape in which the outer side of the inner edible part is covered with a skin, comprises: an arrangement step for arranging a frozen object in a microwave resonance electromagnetic field generated in a microwave resonator; a state detection step for detecting the resonance peak voltage and resonance frequency of the frozen object by the microwave resonator and detecting the internal temperature of the frozen object by a temperature measurement device; a calibration curve calculation step for calculating a calibration curve by performing regression analysis using the resonance peak voltage and resonance frequency detected in the state detection step as explanatory variables and the internal temperature of the frozen object detected by the temperature measurement device as an object variable; a temperature calculation step for predicting the internal temperature of the frozen object by applying the resonance peak voltage and resonance frequency detected in the detection step to the calculated calibration curve; and a refilling step for refilling the container in which the assorted frozen food was filled to increase the density thereof when a correlation value between predicted internal temperature and the measured internal temperature exceeds a threshold value.