Apple grading device based on machine vision and near infrared spectrometer

Abstract

The invention employs machine vision and near infrared spectroscopy to detect appearance qualities (such as size, defects and the like) of apples and internal qualities (such as sugar content, acidity and the like). The device employs the wheel-turning way, and the pipeline detection of apples is guaranteed. Apples are driven to rotate through friction belt wheels. Then apples are subjected to all-directional detection without dead angle by four cameras. A near infrared spectrometer is employed for nondestructive testing of apple internal qualities. The device inputs and outputs signals through an industrial control computer. The industrial control computer processes images and spectroscopic data firstly, then determines grades of apples, then controls an execution mechanism to classify and process the apples. The detection procedures of apples are all on line without manual intervention. The device has high detection efficiency and is suitable for pipeline detection of apples.

Description

technical field [0001] The invention relates to a device for evaluating and grading apples. The device uses machine vision to detect the appearance quality (size, shape, defects, etc.) of apples, and uses a near-infrared spectrometer to analyze the internal quality (sugar content, acidity, etc.) of apples. And according to the detection value, the apples are graded. Background technique [0002] my country is a big country in apple production and consumption, as well as a big exporter. With the strict export inspection and the gradual improvement of the domestic market inspection, more and more attention has been paid to the detection and classification of apples. Traditional apple grading in my country generally adopts manual methods. Operators grade apples according to the size, shape and defects of apples. The productivity is low and the grading effect is unstable. At the same time, the food attributes of apples determine that it is very important to quantitatively dete...

AI Technical Summary

Problems solved by technology

However, at present, domestic detection and grading devices for apples often only have a single detection function or grading function. For example, some devices have the function of sugar content detection, and some have the detection function of appearance size, but they cannot detect the inside and outside of apples at the same time. quality

On the other hand, these detection devices are only aimed at the detection of individual apples, and cannot realize the pipeline operation of detection.

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