Method and apparatus for detecting surface quality of egg

Abstract

The invention relates to a method and apparatus for nondestructive inspecting the egg surface quality. It adopts three CCD cam to take the surface picture of the egg, uses the picture collecting card to transmit the picture to the computer, uses the elastic thumping rod to impact the surface of the egg shell, uses the acoustical meter and A / D transfer card to transmit the sound signal to the computer, the computer imitates the human brain sight and listening function and dose admixture and model identifying process to the data. It uses the computer software to quote the surface quality according to the picture information collected by computer sight system and the sound signal collected by the sound testing system and the established specialist quoting database.

Description

technical field [0001] The invention relates to a method and a device for detecting the surface quality of poultry eggs, in particular to a method and a device for nondestructively detecting the surface quality of poultry eggs based on computer vision and acoustic fusion technology. Background technique [0002] Poultry eggs are rich in protein, fat, multivitamins and trace elements, and are important animal foods in people's daily life. Because eggshells are thin and fragile, once broken, bacteria will quickly invade and multiply, causing corruption and deterioration of poultry eggs, polluting the environment and affecting other poultry eggs. one of the important links. Many studies have shown that the main reason for the loss of poultry eggs during the acquisition, storage, and processing is due to the cross-contamination caused by broken eggs and stained eggs mixed between normal eggs. According to reports, the poultry eggs that my country purchases every year account f...

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Problems solved by technology

Elster R.T, Goodrum J.W et al. (Elster R.T, Goodrum J.W.Detection of cracks in eggs using machine vision. Trans of ASAE, 1991, 34 (1); Goodrum J.W, Elster R.T, Machine vision for crack detection in rotating eggs. Trans of ASAE, 1992, 35(4): 1323-1328) Divide eggs into two grades of qualified products and defective products, the discrimination accuracy is not high and the speed is slow, and the relevant patents have not been reported

In their research, it was found that computer vision technology for detecting damaged eggs is prone to missed collection due to the influence of stains, etc., and it is difficult to detect tiny cracks, which is easy to cause missed detection and has a large error

[0004] The use of acoustic detection technology to detect the quality of agricultural products is a technology that has developed rapidly in the past 30 years. On September 23, 2002, Wen Youxian and others proposed a patent on "equipment and method for non-destructive automatic detection and grading of poultry egg quality". Application (Chinese Invention Application Publication, Patent Application No.: 0213983.5), utilizes the acoustic percussion method to judge the damage of poultry eggs, judges poultry egg size and egg heart color by computer vision, but only with single method detection, and to poultry egg The damage condition cannot be graded, and it does not involve the detection of abnormal eggs (such as heavy shell eggs, deformed eggs, etc.) and stained eggs

[0005] At present, the detection of poultry egg surface quality at home and abroad mostly adopts artificial sensory evaluation method or a single detection method, which cannot make a more comprehensive and objective evaluation of the quality of poultry eggs, and the detection has limitations and is not accurate enough.

For example, a single computer vision technology cannot detect microcracks and abnormal eggs; a single acoustic technology cannot classify the damage of poultry eggs, and cannot detect stains on the surface of poultry eggs and deformed eggs, etc.

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