Fruit sugar degree sorting device and method based on weighing and sorting line transformation

Abstract

The invention discloses a fruit sugar degree sorting device and method based on weighing and sorting line transformation. The fruit sugar degree sorting device and method based on the weighing and sorting line transformation comprises a mechanical conveying device, a visible near-infrared spectrum detection device and a sorting control device. Fruits are conveyed into the visible near-infrared spectrum detection device by the mechanical conveying device, a vertical light beam is used for irradiating the fruits to be detected. The light beam on the fruits reflects through the diffuse reflectionoptical principle, the visible near-infrared spectrum detection device use a visible near-infrared diffuse reflection spectrum to carry out on-line detection and classification for the sugars and acidity in the fruits, the detected sugars and acidity are transmitted to the sorting control device, and the sorting is achieved by turning over a fruit tray. By collecting the visible near-infrared diffuse reflection spectrum of the fruits in the wave band range of 300nm-1100nm and using a prediction model of predicting the sugars and acidity of the fruits, the content of sugars and acidity in thefruits is calculated, and the on-line detection and automatic sorting of the sugars and acidity are achieved in cooperation with a automatic control system.

Description

technical field [0001] The invention relates to on-line detection and sorting of sugar acidity inside fruits, and belongs to the technical field of online non-destructive detection and sorting of fruits, in particular to a fruit sugar sorting device and method based on the transformation of weighing and sorting lines. Background technique [0002] With the development of my country's economy this year, the improvement of consumers' living standards, and the change of consumers' dietary concepts, people no longer only pay attention to external qualities such as appearance, shape, size, and color when purchasing fruits, but also focus on the internal quality of fruits. It is also used as a reference standard, such as sugar content, acidity, vitamin content and other indicators. At present, some developed countries in foreign countries immediately sort the fruits according to the internal quality and external quality after picking. For example, some well-known fruit production c...

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Problems solved by technology

In contrast, in China, the use of near-infrared spectroscopy in the quality detection of agricultural products is mainly concentrated in the laboratory research stage, and there are few reports on dynamic online non-destructive testing devices that can sort fruits and vegetables for sugar content, acidity, origin, etc. Most of the high-precision Laboratory instruments also have the disadvantages of high testing costs, high environmental requirements, and long testing time. Not only are they not suitable for high-speed production lines, but they are also unable to sort large-volume fruits and vegetables. In addition, the expensive equipment also makes many fruit farmers overwhelmed.

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