Non-destructive detection method for egg freshness by using electromagnetic wave resonant cavity

A non-destructive testing, resonant cavity technology, used in testing eggs, using microwaves to test moisture content, testing food, etc., can solve problems such as complex methods

Inactive Publication Date: 2006-06-21
YUNNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is complicated, and the electromagnetic

Method used

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  • Non-destructive detection method for egg freshness by using electromagnetic wave resonant cavity
  • Non-destructive detection method for egg freshness by using electromagnetic wave resonant cavity
  • Non-destructive detection method for egg freshness by using electromagnetic wave resonant cavity

Examples

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Embodiment

[0048] Example: such as Image 6 , Figure 7 shown.

[0049] This embodiment adopts a cylindrical metal resonant cavity 3 with a height of 20 mm and a diameter of 300 mm, made of brass, the material of the conveyor belt 2 is polytetrafluoroethylene, and a central square hole of 60×60 mm is arranged on the wall of the metal resonant cavity 3 5. The conveyor belt 2 passes through its central square hole 5. The electromagnetic wave coupler device 4 with a diameter of 3 mm and a length of 10 mm is used to couple electromagnetic waves. The electromagnetic waves are generated by the frequency sweep circuit and fed to the resonant cavity through the coupling device; 6 is the electromagnetic wave emission system. , which is composed of frequency sweeping circuit, used to generate electromagnetic waves; 7 is the interface circuit, respectively used to connect the computer with the transmitting system, connect the receiving system with the computer, and connect the weighing device with...

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PUM

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Abstract

The invention discloses an egg quality lossless detecting method of electromagnetic wave technique, which comprises the following parts: metal resonance cavity, weight sensor, conveying belt and computer. The method comprises the following steps: (1) putting the egg with different filling weighs and freshness in the metal resonance cavity; measuring the ªñf and attenuation of electromagnetic signal; storing the list in the computer to finish the scaling and calibration course; (2) reading the ªñf, attenuation of electromagnetic signal and temperature from the computer when the egg enters into the resonance cavity; obtaining the disposed egg freshness on the conveying belt through checking the graph.

Description

technical field [0001] The invention relates to the application of electromagnetic wave technology in non-destructive detection of poultry egg quality. Background technique [0002] At present, sensory and physical methods are mostly used in the trade network to identify and grade the quality of eggs. As long as the eggs are not inferior eggs, they can be put on the market. For a small number of rural chicken farmers, this method can be used to roughly identify and grade eggs; but for mass production, these methods are labor-intensive, have low grading accuracy, and the test results lack objectivity. [0003] Recently, several methods for non-destructive testing of egg quality have been reported. Acoustic impact method: the principle is to detect the cracks of eggs by performing spectrum analysis on the sound pulse vibration generated by knocking eggs. The detection accuracy of good shell eggs is 85%. The disadvantage of this method is that it can only detect good shell egg...

Claims

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Application Information

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IPC IPC(8): G01N22/04G01N23/00G01N33/08
CPCG01N33/08G01N22/00
Inventor 黄铭余江宗容杨明华蔡光卉施继红杨晶晶
Owner YUNNAN UNIV
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