Handheld near infrared spectrum detection system and detection method for quality of fruits and vegetables

Abstract

The invention discloses a handheld near infrared spectrum detection system and a detection method for the quality of fruits and vegetables, and belongs to the field of quick detection technologies for the quality of foods or agricultural products. The handheld near infrared spectrum detection system and the detection method have the advantages that modulation light paths of a digital micro-mirror device is matched with a single-point detector and other external modules, so that the handheld, low-cost and miniaturized near infrared spectrum detection system for the quality of the fruits and vegetables can be obtained, and high-performance spectrum information can be acquired without expensive linear array detectors; characteristic wave bands are selected at first in the aspect of building fruit and vegetable quality detection models, then wave bands which do not contain information variables and are low in relevancy are removed, then a small quantity of characteristic wavelengths are selected by the id of characteristic wavelength selection processes, internal collinear relations among spectrum data are eliminated, accordingly, model calculation can be reduced, the models can be simplified, and the quality of the models can be improved; the bottleneck problems of high nondestructive detection cost for the quality of fruits and vegetables, carrying inconvenience and poor quality of existing detection models can be solved by the aid of the handheld near infrared spectrum detection system and the detection method.

Description

technical field

[0001] The invention belongs to the technical field of rapid detection of food or agricultural product quality, and in particular relates to a hand-held near-infrared spectrum detection system and detection method for fruit and vegetable quality. Background technique

[0002] Fruits and vegetables occupy an important position in the world's agricultural production and trade, and the quality control of fruits and vegetables is of great significance to improving market competitiveness. Traditional wet chemical methods are time-consuming, laborious, costly, and use chemical reagents, which cannot meet the needs of rapid detection in fruit and vegetable production, circulation, and control.

[0003] The photoelectric detection technology of agricultural products has the advantages of high throughput and simultaneous detection of multiple indicators. Among them, the preferred green analysis technology for rapid and non-destructive testing of fruit and vegetable q...

Images