Diffuse-reflection-light-based method and device for detecting apple blossoms suffering from moldy core disease

Abstract

The invention discloses a diffuse-reflection-light-based method and device for detecting apple blossoms suffering from a moldy core disease. In the prior art, mold core discrimination is carried out on picked apples. Position coordinates of all pistils are obtained through three-dimensional scanning, an optical fiber laser is used for emitting laser to all the pistils, diffuse reflection light generated by the pistils irradiates a photosensitive sensor of a photoelectric detection module, and the photoelectric detection module converts optical signals into electric signals and transmits the electric signals to a core processing module; and the core processing module judges whether the apple blossom pistil at the current position coordinate is infected with the moldy core disease or not according to a pre-implanted judgment model, and sends the current position coordinate to the computer if judging that the apple blossom pistil at the current position coordinate is infected with the moldy core disease. Diffuse reflection light is used for detection, detection can be carried out on an orchard site, detection is carried out in the flowering phase of apples, insect pests are conveniently removed, nutrients consumed by growth of diseased fruits are saved, and nutrients of apple trees are more effectively utilized.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a method and a device for detecting apple blossoms suffering from mildew heart disease based on diffuse reflected light. Background technique [0002] my country's apple production accounts for a high proportion of the fruit industry, accounting for more than half of the world's apple production. However, due to the influence of diseases such as moldy heart disease, the overall quality is low, and a large amount of economic losses are caused by moldy heart disease every year. Mold heart disease is caused by the infection of pathogenic bacteria. The pathogenic bacteria can infect in the form of mycelium or spores. The pathogenic bacteria mainly infect during the flowering period, and the pathogenic bacteria will enter the internal tissues such as the ovary during the flowering period. [0003] The light will be reflected, transmitted and absorbed on the pistil. Aft...

AI Technical Summary

Problems solved by technology

[0006] At present, the non-destructive detection technology of apple moldy heart disease in most researches generally uses transmitted light or near-infrared reflection spectroscopy, which is aimed at mature apples, which makes the nutrients consumed in the growth process of apples with moldy heart disease wasted.

Secondly, the current research generally focuses on the identification of moldy heart disease on apples after picking, rather than directly in the orchard environment, which makes picking apples with moldy heart disease a waste of picking costs.

Furthermore, the light source used in most studies is a narrow-band LED. Compared with a laser, the pulse width is wider, and it is only suitable for detection in the range of tens of centimeters at most.

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