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Acoustic detection method and device for egg cracks based on continuous vibration sound production

An egg and crack technology is applied in the field of egg detection, which can solve the problems of egg damage, restricting the running speed of a knocking mechanism, etc., and achieves the effects of low cost and simple structure.

Active Publication Date: 2013-07-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the knocking mechanism is a reciprocating structure, and the knocking head must have a certain speed and strength when knocking, but it also needs a certain degree of elasticity to avoid damage to poultry eggs caused by excessive strength, which restricts the running speed of the knocking mechanism.

Method used

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  • Acoustic detection method and device for egg cracks based on continuous vibration sound production
  • Acoustic detection method and device for egg cracks based on continuous vibration sound production
  • Acoustic detection method and device for egg cracks based on continuous vibration sound production

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Embodiment

[0070] The present invention includes a corrugated board 1 with corrugations on the upper surface, where the material of the corrugated board 1 is steel, the thickness is 5 mm, the width is 100 mm, and the length is 250 mm. The corrugation interval is 1mm, the corrugation width is 1mm, and the direction of corrugation is perpendicular to the rolling direction of poultry eggs. The inner surface of the corrugated board has an arc-shaped depression with a radius of 850 mm. The purpose of this arc-shaped depression is to guide the detected poultry eggs so that they roll down along the center line of the corrugated board 1 . Microphone 2, amplifier 3, computer 4, power supply 5, buffer pad 6; one end of the corrugated board 1 is elevated by a certain angle θ, and the range of the angle θ can vary from 0° to 60°, and placed on the lower end of the corrugated board 1 A soft buffer pad 6, the microphone 2 is placed close to the center of the back of the corrugated board 1, the microph...

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PUM

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Abstract

The invention discloses an acoustic detection method and device for egg cracks based on continuous vibration sound production. The device comprises a corrugated board, a microphone, an amplifier, a computer, a power source and a crash pad, wherein one end of the corrugated board is lifted by a theta angle, and the lower end of the corrugated board is placed on the crash pad; the microphone is closely clung to the back of the corrugated board, and the microphone is connected with an input port of the microphone of the computer through the amplifier; and the amplifier is connected with the power source, and the computer is internally provided with signal collecting and analysis software. The device provided by the invention utilizes the decay rate difference of acoustic signals of normal eggs and cracked eggs in a continuous vibration sound production process to detect the cracked eggs, and the device has the advantages of simple structure and low cost.

Description

technical field [0001] The invention relates to a detection method and device for poultry eggs. In particular, it relates to an acoustic detection method and device for poultry egg cracks based on continuous vibration sounding. Background technique [0002] The detection of cracks on the surface of poultry eggs plays an extremely important role in the quality detection and grading of poultry eggs. Poultry eggs with cracks on the surface not only reduce their strength, but are also unfavorable for packaging, transportation and storage. Simultaneously, the existence of cracks makes poultry eggs highly likely to be infected by germs, thereby affecting the health of eaters. Cracked eggs can also contaminate surrounding sound eggs, causing economic losses to producers. [0003] At present, there are two relatively broad methods that have been applied in the detection of cracks on the surface of poultry eggs. 1) Machine vision: Use computer image processing technology to detec...

Claims

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Application Information

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IPC IPC(8): G01N29/14G01N29/44
Inventor 应义斌金程
Owner ZHEJIANG UNIV
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