Device for detecting pesticide residue and detection method

A pesticide residue detection and pesticide residue technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve the problems of large judgment errors, complicated operation process, and long detection cycle. question

Active Publication Date: 2015-03-25
厦门安东电子有限公司
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Problems solved by technology

This method is mainly based on comparing the color of the pesticide residue quick test card with the blank card to judge whether it is blue (representing low esterase inhibition rate and very little pesticide residue), light blue (representing a small amount of pesticide residue) or white ( It represents high enzyme inhibition rate and extremely large pesticide residues). However, the ...

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  • Device for detecting pesticide residue and detection method
  • Device for detecting pesticide residue and detection method
  • Device for detecting pesticide residue and detection method

Examples

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Embodiment 1

[0046] Embodiment 1: see figure 1 and figure 2 , a device for pesticide residue detection, comprising a pesticide residue quick test card, a power supply, a device body, a temperature control component, a camera component, a controller and an image processing and analysis module.

[0047] Pesticide Residue Quick Test Card detects pesticide residues by inhibiting the color development process. After the color development stage, the Pesticide Residue Quick Test Card detects the degree of pesticide residues according to the color: no color is positive, pesticide residue is extremely large, and light blue is weak. Positive, there is a small amount of pesticide residue, blue is negative, no pesticide or very little pesticide residue. The pesticide residue detection method provided by the present invention is based on the above principle to process and analyze the color-developed image of the pesticide residue quick test card, so as to realize the pesticide residue detection.

[...

Embodiment 2

[0053] Embodiment 2, a method for detecting pesticide residues, using the device described in claim 1 or 2 for detection, the specific steps are as follows:

[0054] S1: Select an anchor point on the pesticide residue quick test card, determine the color area through the anchor point, and then select feature points in the color area, one feature point is a feature area; prepare the extract of the substance to be tested, The specific area of ​​the quick test card is dipped with the extract of the substance to be tested; these feature points are preferably rotated in a spiral manner, so that the extract can be distributed on the pesticide residue quick test card as much as possible to improve the accuracy of the test. Set the temperature of the device in Example 1, turn on the device; then select the image when the color region on the pesticide residue quick test card no longer changes color as a reference image;

[0055] S2: Replace the quick test card for pesticide residues, u...

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Abstract

The invention relates to a device for detecting pesticide residue and a detection method. The device comprises a pesticide residue fast detection card, a power supply, a device main body, a temperature control assembly, a camera and a controller; the temperature control assembly and the camera are respectively used for heating at constant temperature and shooting according to the control of the controller. The detection method comprises the following steps: (1) respectively obtaining the reference image of extracting solution of the matter to be detected and the standard image of the extracting solution of the matter without pesticide residue by the device; (2) respectively calculating the tone, saturability and brightness corresponding to each pixel point in the reference image characteristic region and the standard image characteristic region; (3) having quantitative classification process on the corresponding tone, saturability and brightness to obtain the reference quantization series weight vector and the standard quantization series weight vector, calculating the degree of association between the reference quantization series weight vector and the standard quantization series weight vector; (4) obtaining the average degree of association, the average degree of association is more close to 1 and the pesticide residue is less. The operation process is simplified, and the pesticide residue is detected exactly and quickly.

Description

technical field [0001] The invention relates to a detection device, in particular to a device and a detection method for pesticide residue detection. Background technique [0002] As food safety issues have received more and more attention in China, the issue of pesticide residues in fruits and vegetables has also received great attention. Fruits and vegetables are mainly organic phosphorus and carbamates, two types of insecticide residues with large dosage and high toxicity. The national standard "GB / T 5009.199-2003 Quick Test Card Method for Rapid Detection of Organophosphorus and Amino Acid Lipid Pesticide Residues in Vegetables" formulates the enzyme test paper made of highly sensitive cholinesterase and chromogenic agent for pesticide residues The quick test card is a method for determining the residues of organophosphorus and aminomethyl esters in fruits and vegetables according to the inhibition rate of cholinesterase. This method is mainly based on comparing the co...

Claims

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Application Information

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IPC IPC(8): G01N21/78
Inventor 肖国专董宇
Owner 厦门安东电子有限公司
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