Electronic nose system for banana quality detection

Abstract

The invention discloses an electronic nose system for banana quality detection, which comprises a sensor array, a signal collection module, a temperature control module, a gas course control module, a press button, a display screen, a data storage module, a communication interface and a controller, wherein the gas course control module collects the characteristic gas of a sample into a gas chamber; the characteristic gas is converted into a voltage signal by the sensor array; the voltage signal is converted into a digital signal by the signal collection module; and finally, the result is determined by a mode identification unit. Compared with the prior art, the system has the advantages that: 1, due to the adoption of portable design, the system can work independently without a computer; 2, as the temperature and humidity control module of a sensor working chamber is added in the system, the working environment of the system is more stable and the detection accuracy is improved; and 3, a preprocessing technique and BP neural network combined identification algorithm is adopted, so the identification rate of the system is improve.

Description

Technical field: [0001] The invention relates to an instrument for detecting the quality of agricultural products, in particular to an electronic nose system for detecting the quality of bananas. Background technique: [0002] The circulation of agricultural products in my country is mainly unprocessed fresh products, but due to the lack of effective monitoring of the quality of agricultural products in the logistics process, the loss in the post-production logistics process of agricultural products in my country is relatively large. According to statistics, the loss rate of fruits and vegetables in the logistics link in my country is 20%-30%, with an annual loss of nearly 100 billion yuan, while the loss rate of fruits and vegetables in developed countries after harvest is less than 5%; my country's grain loss accounts for 12% of the total output -15%, which is equivalent to the annual consumption of 80 million people; therefore, the study of agricultural product quality tes...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no electronic nose system dedicated to the quality inspection of agricultural products, and most of the electronic nose systems are heavy in structure and cannot be used without a computer, which is not suitable for rapid on-site inspection

In addition, the sensors used in the electronic nose are sensitive to changes in the temperature and humidity of the environment, and most electronic nose systems do not control the temperature and humidity of the working environment of the sensors, resulting in insufficient detection accuracy and repeatability

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