Device for controlling fruit sweet acidity separation production line based on visible and near infrared spectrum

Abstract

The invention discloses a device for controlling a fruit sweet acidity separation production line based on a visible and near infrared spectrum, consisting of a hardware device and a software system. The hardware device comprises three modules including a spectrum collecting module (2), a computer (9) and a separation control module (29); and the software system comprises a spectrum analyzing module and a separation software module. The working process of the control device is as follows: pressing down a start button, running a production line, and conveying fruits to a visible and near infrared spectrum detection station; detecting position information of fruits movement by a proximity switch, transmitting the position information to a PLC (10), triggering a spectrograph (24), collecting visible and near infrared spectrums reflected by the fruits by the spectrograph (24), transmitting signals to a fruit sweet acidity model of the computer software, and detecting the grade of the fruit sweet acidity content; transmitting grade signals to the PLC by the computer; registering the dynamically moved fruits by shift control; and when the fruits move to a separation opening, carrying out the extraction, the judgment and the output control on the grade signals by the PLC, and driving a rotary electromagnet of the separation opening, thus realizing the separation of different grades of fruits.

Description

technical field [0001] The invention relates to a control device for a production line of spectral sorting of acidity and sugar content inside fruits, and belongs to the technical field of online nondestructive detection of agricultural and forestry fruits. Background technique [0002] With the continuous improvement of people's living standards, consumers not only pay attention to external qualities such as size, color and shape, but also pay more attention to internal qualities such as taste, sugar content and acidity when purchasing fruits. At present, foreign fruits are sorted after picking, starting from external quality inspection to internal and external quality inspection. Near-infrared spectroscopy diagnostic technology is a new technology to detect the internal quality of fruits without destroying fruits. Japan, the United States, Belgium, New Zealand, Israel and other countries have put this technology into the post-harvest processing of agricultural products. D...

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Problems solved by technology

Publication No. 2553907 Chinese Patent, Publication No. 2555109 Chinese Patent, Publication No. 1394699 Chinese Patent, Publication No. 2555110 Chinese Patent discloses a sorting device based on a fruit machine vision production line, using image processing to determine fruit shape, size, color, skin Smoothness and other external qualities are sorted, but all are automatically controlled by single-chip microcomputers, which are easily interfered by logic devices and cause control disorder

The Chinese patent with the announcement number 100449301 discloses a multi-stage conveying and sorting optical characteristic fruit internal quality sorting device, but the control system is complicated, and the reliability is limited by the influence of peripheral sorting logic devices

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