Multi-spectral detection system for rapid real-time detection of fruit and vegetable pesticide residues and use method thereof

Abstract

The invention provides a multi-spectral detection system for rapid real-time detection of fruit and vegetable pesticide residues and a use method thereof. The detection system comprises a data processing module and an imaging unit connected with the data processing module; the data processing module is used for acquiring images of fruit and vegetable sample at a loading module in a camera obscura through an imaging unit and analyzing spectral characteristics of the images to evaluate pesticide residue conditions of the samples; a lighting module is arranged in the camera obscura; the lighting module comprises a halogen light source arranged at the universal rotating shaft, and a light uniformizing sheet is arranged at the light output end of the halogen light source; the upper part of the camera obscura is provided with a light reflecting module with a light reflecting surface facing the loading module; and when the imaging unit photographs the sample, the light of the halogen light source is reflected at the reflective surface of the reflective module and illuminates the sample. According to the invention, the equipment cost can be reduced, the application range is expanded by using an automatic stability-maintaining holder and a light reflecting module, and rapid and lossless real-time detection of fruit and vegetable pesticide residues is carried out by using a visible / near infrared spectrum technology.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a multi-spectral detection system for rapid and real-time detection of pesticide residues in fruits and vegetables and a method for using the same. Background technique [0002] my country is a major producer and consumer of fruits and vegetables in the world, and the quality and safety of fruits and vegetables has been widely concerned. However, due to the lack of practical detection technology, pesticide residue pollution in fruits and vegetables has always affected people's life safety, and also restricted the rapid and healthy development of my country's fruit and vegetable industry. In order to seek greater benefits, many farmers abuse pesticides, hormones and other chemical agents to kill insects, sterilize and accelerate ripening, resulting in excessive pesticide residues in fruits and vegetables on the market, seriously endangering the lives and health of consumers. Ex...

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Problems solved by technology

[0004] Most of the existing non-destructive testing products for fruit and vegetable pesticide residues are based on Raman spectroscopy, but such equipment is expensive, and fruit and vegetable samples are prone to fluorescence phenomena that cause background interference to Raman spectroscopy. Using visible / near-infrared spectroscopy for detection can not only Effectively reduce costs, and because of the simple operation, it is easy to realize online analysis and monitoring, which is very suitable for real-time detection during the growth or processing of fruits and vegetables

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