Modeling method of vegetable and fruit hardness prediction model

The invention discloses a modeling method of a vegetable and fruit hardness prediction model, and relates to the technical field of vegetable and fruit texture nondestructive testing, in particular to the modeling method of the vegetable and fruit hardness prediction model, which comprises the following specific steps: step 1, obtaining a test sample; 2, preparing a test sample; step 3, collecting a sound vibration response signal of the sample; 4, measuring the reference hardness of the sample; 5, performing a periodic experiment; step 6, generating an acoustic vibration multi-domain image array; and 7, constructing a vegetable and fruit hardness prediction model based on the acoustic vibration multi-domain image array. According to the modeling method of the vegetable and fruit hardness prediction model, the time-frequency information and the vibration characteristics in the sound-vibration response signals of the vegetables and the fruits can be fully extracted, so that the hardness of the vegetables and t