Detection method for bird egg crack by utilizing volatile matter

Abstract

The invention discloses a device for detecting cracks on a poultry egg shell by using a volatile matter and a method thereof. The detection device mainly comprises a computer, an activated carbon filter, a first built-in pump, a gas tank, an air valve, a material container, a switch, a gas sensor array, a second built-in pump, a data acquisition unit and an A / D converter. The data acquisition unit acquires response signals of the gas sensor array; the signals are transmitted to the computer after being conditioned and converted through the A / D converter so as to extract a representative characteristic value in a curve of each sensor; by taking the extracted characteristic value as an input value, a visualized distinguishing is performed by using a principal component analysis and a lineardiscriminant function; and a pattern recognition is performed by using a classical BP algorithm and a BP neural network based on a genetic algorithm. The method excludes the interference caused by subjective factors of manual operation and overcomes the shortcoming of destructive detections, thereby achieving the non-destructive detection on fine cracks on the poultry eggs nondestructively and accurately.

Description

technical field [0001] The invention relates to a technology for detecting cracks in poultry egg shells, in particular to a device and method for detecting cracks in poultry egg shells using volatile matter. Background technique [0002] Because the eggshell is thin and fragile, once broken, bacteria will quickly invade and multiply, causing corruption and deterioration of poultry eggs. Therefore, the damage detection of poultry eggs is one of the important links in the production, management and processing of poultry eggs. According to reports, the poultry eggs that my country buys every year account for more than 10-15% of the purchase amount due to the loss caused by spoilage. Therefore, the crack detection of poultry eggs is very necessary. [0003] At present, domestic and foreign industrial production mainly relies on manually removing stained eggs under light, and identifying and removing damaged eggs by observing, rotating and touching eggs, and listening to the so...

AI Technical Summary

Problems solved by technology

This kind of method not only has high labor intensity, low production efficiency, and large amount of man-made damage, but also the detection accuracy is easily affected by human attention, physical strength, experience and work attitude, so it cannot be fundamentally guaranteed.

Especially for small cracks, it is difficult to detect

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