Electronic nose used for detecting maturity of cherimoya and detection method of electronic nose

Abstract

The invention discloses an electronic nose used for detecting maturity of cherimoya and a detection method of the electronic nose. The electronic nose used for detecting the maturity of the cherimoya comprises a power supply, 8 different sensors, a signal collecting and processing unit, a box body and two air pumps. The detection method comprises the following steps that: (1) an initial value Vs of a response characteristic value of each sensor is extracted; (2) cherimoya samples are collected and volatilized fully into a container; (3) a steady value Ve of the response characteristic value of each sensor is extracted by the signal collecting and processing unit and the time Ti from detection starting to response achieving the steady value is recorded to obtain climbing speed; (4) characteristic parameter Amature of maturity of cherimoya is calculated and obtained by a nonlinear stochastic resonance model; and (5) Amature is associated with a critical value of the maturity of cherimoya to obtain the result of maturity of cherimoya. Due to the adoption of the electronic nose and the detection method, the maturity of the cherimoya can be rapidly, conveniently and accurately detected.

Description

technical field [0001] The invention relates to an electronic nose for detecting fruit quality, in particular to an electronic nose for detecting the maturity of custard apples and a method for detecting the maturity of custard apples using the electronic nose. Background technique [0002] Annona squamosa is native to tropical America. It is a small deciduous tree of the Annonaceae family. It is now widely distributed in tropical and warmer subtropical regions of the world. It matures just before and after the Mid-Autumn Festival. 50 to 100 yuan / kg. However, because the fresh fruit of custard apple is extremely perishable and cannot be stored and transported, its industrialization development is restricted. At present, the vast majority of domestic custard apple fruits are only sold in the place of origin after they mature, and it is difficult to sell them to non-origin markets, resulting in a large backlog, rotten fruit, and the inability to export to earn foreign exc...

AI Technical Summary

Problems solved by technology

The disadvantages of this invention are as follows: one is that the function is single, and the detection of the maturity of custard apples cannot be realized; the other is that the method of collecting agricultural product information by the sensor is random, which affects the test results; the third is that the system does not propose the data collected by the sensor methods for processing to obtain precise results

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