Egg quality nondestructive detection method based on unit weight of egg

A non-destructive testing and egg technology, which is applied in the field of non-destructive testing of egg quality based on egg test weight, can solve the problems of reading error, spoilage, and cumbersome process.

Inactive Publication Date: 2018-10-16
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method, the process is cumbersome, especially the drainage method to measure the volume of eggs, which needs to soak the eggs in water, and read the volume difference before and after
Visual readings are prone to large errors. Even fresh eggs generally have a bulk density of no more than 1.10. If th

Method used

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  • Egg quality nondestructive detection method based on unit weight of egg
  • Egg quality nondestructive detection method based on unit weight of egg
  • Egg quality nondestructive detection method based on unit weight of egg

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1: Construction of egg area-volume regression model

[0063] The experiment started from the third day of egg laying, and the egg image information was acquired every 3 days. The steps of each experiment are as follows:

[0064] 1. Image acquisition

[0065] In this embodiment, the image acquisition camera adopts 2 XG200 COMS USB digital cameras of Shenzhen Micro Seiko, the maximum resolution of which is 1600×1200, and the lens adopts a fixed-focus lens of 3 million pixels (the focal length is 8mm), and the cameras are connected through a USB cable. computer. The light source adopts LED lights with a power of 5W, and the light intensity can reach 10000Lx. In order to obtain the front view and side view of the eggs, the camera and the egg tray are respectively fixed at appropriate positions on the plate, so that the camera has a certain distance from the front and side of the egg placement position, and the included angle is a right angle. Light sources ar...

Embodiment 2

[0114] Example 2: Practical Application of the Egg Area-Volume Regression Model in Predicting the Freshness of Eggs

[0115] 1. Egg test weight, Hough unit and yolk index at different stages

[0116] The experiment started from the third day of egg laying, and the egg image information was obtained every 3 days, and the egg weight, Hough unit, and egg yolk index (that is, freshness) were measured until 21 days. A total of 7 times were measured, 4 eggs each time, a total of 28 eggs.

[0117] Hough unit calculation formula: HU=100log(H-1.7m 0.37 +7.57)

[0118] In the formula, H is the height of the egg white in mm; m is the mass of the egg in g.

[0119] Egg yolk index calculation formula:

[0120]In the formula, h is the height of egg yolk in mm; w is the diameter of egg yolk in mm.

[0121] Use the egg image information and formula 2-11 to calculate the parameter x, and then use the egg area-volume regression model expression: v=4.7872857×10 -7 x-1.1920186 calculates ...

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Abstract

The invention discloses an egg quality nondestructive detection method based on the unit weight of an egg, and belongs to the technical field of nondestructive detection of the quality of agriculturalproducts. The method comprises the following steps: rapidly connecting and processing the image of every egg, establishing a linear relationship between the area and the volume of the very egg, conveniently and rapidly calculating the unit weight of every egg, and establishing a linear relationship between the unit weight of the egg and the Haugh unit, a common index for the freshness, of the egg to predicate the freshness of the egg. Eggs with the unit weight rho being equal to or more than 1.067 have a high freshness, and are suitable for consumers to eat; eggs with the unit weight rho being 1.046-1.067 can be eaten by the consumers; eggs with the unit weight rho being 0.996-1.046 have a poor freshness, and are not suitable for consumers to eat as shell eggs; and eggs with the unit weight rho being equal to or less than 0.996 cannot be eaten. The freshness of an egg can be rapidly and simply known and the egg is graded only through inputting the image of the egg into a system.

Description

technical field [0001] The invention belongs to the technical field of nondestructive detection of agricultural product quality, and in particular relates to a method for nondestructive detection of egg quality based on egg bulk density. Background technique [0002] Eggs are one of the natural foods. Due to various factors such as breeding, breeding environment, and genetics, the quality of eggs is also different. Since most fresh egg production ignores disinfection, grading, inspection and other processes, the surface of the eggshell often carries a large number of microorganisms, which shortens the shelf life of fresh eggs, directly affects the edible quality, reduces the overall product quality and market competitiveness, and is even harmful to the human body. health. Egg freshness is an important economic indicator to measure the quality of eggs, and it is also an important reason affecting egg sales. Therefore, in the storage, processing and circulation of eggs, the ...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01N33/08
CPCG01N21/84G01N33/08
Inventor 李兴民尤子牵徐雷
Owner CHINA AGRI UNIV
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