Method and device for controlling black tea moderate fermentation based on visible spectrum technology

Abstract

The invention provides a method and device for controlling black tea moderate fermentation based on the visible spectrum technology. Due to the fact that the black tea fermentation color is related to the instant tea quality, a target color and a threshold value of a fermentation object are set through a computer, a reflection spectrum in a visible spectrum region of the fermentation object in the fermentation process is measured through optical fibers and a spectrograph in real time, and a chromatic value of the fermentation object and chromatic aberration between the fermentation object and target chromaticity are calculated by the computer through the reflection spectrum of the fermentation object; when the chromatic aberration is smaller than the set threshold value, fermentation of the fermentation object is stopped, and therefore accurate control over black tea moderate fermentation is achieved. The method and device can be applied to black tea produced through fermentation with green tea serving as a raw material, so that the purposes that the quality of the black tea is standardized and stabilized and the quality is high are achieved.

Description

technical field [0001] This patent relates to the field of biological fermentation, specifically relates to the real-time detection of visible spectrum of fermented products, and is a method and device for real-time monitoring of chromaticity value during black tea fermentation and moderate fermentation control based on visible spectrum technology. Background technique [0002] The consumption of black tea in the world today accounts for more than 70%. In the production of black tea, the fermentation process is the key process to form the quality of black tea. Insufficient fermentation or excessive fermentation will affect the quality of black tea. The regulation of the fermentation degree of traditional black tea is mainly judged by experienced people with sense organs. This fermentation method is greatly affected by the environment and the technical level of the workers. It can only be controlled within a certain range and cannot be precisely controlled. It lacks scientifi...

AI Technical Summary

Problems solved by technology

However, in the practical application of black tea fermentation treatment, due to the traditional camera using broadband color filter color measurement is very limited, the image information collected by some equipment is easily affected by the ambient light intensity and the light and shade of the object

It can only detect physical and geometric features including color, size, shape and texture, etc., and cannot achieve high-precision monitoring of black tea chroma value

[0004] In the fermentation process of the existing technology, the detection accuracy is low, and it cannot adapt to the complex production environment

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