Densification tobacco flue-cure dry-wet bulb temperature automatic control technique based on tobacco image processing

Abstract

The invention provides a densification tobacco flue-cure dry-wet bulb temperature automatic control technique based on tobacco image processing. The technique includes: building an intelligent expert database of the green-yellow ratio of the tobacco, the tobacco stem and the main vein parts of tobacco flue-cure and the dry-wet bulb temperature curve; using a color video camera to collect the color images of tobacco in a standard flue-cure room in real time; performing binarization on the green component images of the color tobacco images, extracting the tobacco, the tobacco stem and the main vein parts and the like, and calculating the green-yellow ratio of corresponding parts; performing Bayesian crosscheck on the green-yellow ratio of the tobacco, the tobacco stem and the main vein parts and the like and the corresponding features in the intelligent expert database, and estimating current tobacco flue-cure state in real time; feeding the current tobacco flue-cure state to a dry-wet bulb temperature automatic control system of the flue-cure room, calling corresponding dry-wet bulb temperature expert curves to automatically control dry-wet bulb temperature. The technique has the advantages that the constantly changed tobacco flue-cure image features during tobacco flue-cure are utilized to monitor densification tobacco flue-cure quality online in real time, tobacco flue-cure dry-wet bulb temperature is controlled automatically, quality of flue-cured tobacco can be increased effectively, and labor cost of tobacco flue-cure workers can be reduced.

Description

Technical field: [0001] The invention relates to the technical field of intensive flue-cured tobacco curing, is suitable for the automatic control of the dry-wet bulb temperature curve of intensive tobacco leaf curing, and is widely used in the automatic curing of tobacco leaves. Background technique: [0002] Tobacco leaf intensive curing room has become the main equipment for domestic flue-cured tobacco curing due to its advantages of energy saving, labor saving, and ability to improve the overall quality of tobacco leaves. Intensive curing modes such as curing workshops and cooperatives have been gradually improved. In the process of baking tobacco leaves in the three-stage baking process, the color change of tobacco leaves is divided into three stages, namely, the first stage-turning yellow (tobacco leaves are yellow with blue veins, and the main veins are soft), and the second stage-fixing color (Tobacco leaves reach a large volume, and 70% to 80% of tobacco leaves and ...

AI Technical Summary

Problems solved by technology

Qualitative evaluation based on the senses. During the observation process, it is easy to be affected by the objective environmental conditions, the emotions of the observer, and the degree of experience of the observer. It is highly subjective and empirical, and it is prone to tobacco leaf baking. Unstable phenomena not only cause economic losses to the tobacco leaf circulation of the country, tobacco farmers and cigarette processing departments, but also bring many troubles to the post-processing

In addition, when the quality requirements and grading standards change, it is more difficult for people to get rid of the old quality concept and adapt to the new quality standard

With the evolution of the quality of tobacco products, the quality requirements of tobacco leaves are gradually increasing, and manual observation and adjustment will become more and more difficult to meet the requirements

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