Device and method for detecting kiwi fruit storage time

The invention discloses a device and method for detecting kiwi fruit storage time. The device comprises a data collecting device and a computer, wherein the data collecting device comprises a microprocessor, a sample room, an air chamber, a gas-sensitive sensor array, a first air pump and a gas source filled with inert gas; an upper communicating pipe and a lower communicating pipe are arranged between the sample room and the air chamber; an air inlet is formed in the air chamber; an air outlet and a second air pump are arranged on the upper communicating pipe; an air outlet electromagnetic valve is arranged at the air outlet; the gas-sensitive sensor array is arranged inside the air chamber. The method comprises the following steps: the gas-sensitive sensor array is used for detecting volatile gas from kiwi fruit, the microprocessor is used for sampling response signals generated by the gas-sensitive sensor array, the computer is used for processing the sampling value, a coherence resonance characteristic value Rmax is computed through a coherence resonance system model, and storage time can be computed through substituting the Rmax into a kiwi fruit storage time detecting model. The device and the method can detect the kiwi fruit storage time quickly and accurately, and the detecting cost is comparatively low.