Visible near-infrared spectrum-based fruit brix/acidity online detection and separation production line

Abstract

The invention discloses a visible near-infrared spectrum -based fruit brix / acidity online detection and separation production line, which consists of a mechanical conveying device (III), a visible near-infrared spectrum detection device (I) and a separation control device (II). The work flow is as follows: the fruits are conveyed by the mechanical conveying device of the production line and enter a station of the visible near-infrared spectrum detection device (I) and a separation; a coding disc (2) and a proximity switch (1) installed on a chain wheel shaft detect the moving position information of the fruits and send the information to a spectrometer (24); the spectrometer is triggered by the proximity switch, acquires the visible near-infrared spectrum absorbed and reflected by the fruits and sends a spectrum signal to a fruit brix / acidity model of the computer software so as to calculate the content of the fruit brix / acidity and divides the grades of the fruit brix / acidity by segment; and the computer is communicated with a programmable controller PLC (10) through an interface, assigns the grade signals to the PLC and controls the execution element at each separation port to realize separation of the fruits of different grades. The invention is applicable to the online detection and separation of the inside brix / acidity of the fruits.

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 on-line non-destructive detection and sorting of fruits. Background technique [0002] With the continuous improvement of people's living standards, consumers not only pay attention to external quality such as size, color and appearance shape, but also pay more attention to internal quality, such as taste, sugar content and acidity when purchasing fruits. At present, the sorting of foreign fruits after picking has begun to shift from external quality inspection to internal and external quality inspection of all products. For example, some fruit production companies in Japan and the United States have advertised that their brand fruits not only have the best quality such as size and appearance, but also have internal quality. Guarantee of nutritional quality. Near-infrared spectroscopy non-destructive testing technology is a new ...

AI Technical Summary

Problems solved by technology

Analyze the relevant non-destructive testing equipment for agricultural product quality imported in China, most of which are high-precision laboratory spectral analysis instruments. In addition to high testing costs and long testing time, they are not suitable for real-time high-speed production lines

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