Egg freshness detection device

Abstract

The invention belongs to the technical field of agricultural product detection, and particularly relates to an egg freshness detection device. The device comprises a cup-shaped container; an egg frame, a sound wave detection assembly and a processor are arranged in an inner cavity of the cup-shaped container; the egg frame is used for placing a to-be-detected egg; the sound wave detection assemblycomprises a sound wave detection probe; the sound wave detection probe emits a sound wave to the to-be-detected egg and collects an echo reflected by the detected eggs; the processor comprises a dataacquisition module, a data storage module, a data processing module, a judgment module and a display screen; the data acquisition module is connected with the sound wave detection probe; the processor obtains whether cracks exist on an egg shell of the detected egg or not by performing signal analysis on the echo; and the display screen displays an analysis result. The portable egg freshness detection device capable of rapidly detecting the freshness of the egg and whether the cracks exist or not is high in detection precision and has practicability.

Description

technical field [0001] The invention belongs to the technical field of agricultural product detection, and in particular relates to an egg freshness detection device. Background technique [0002] The egg industry is not only a pillar industry of China's agriculture, but also an important industry related to the national economy, the people's livelihood and social stability. Since 1984, China's egg production has been ranking first in the world. However, most of the eggs sold in domestic farmers’ markets have not been processed and graded, and there will be chicken blood, stains, cracks and microorganisms harmful to the human body to varying degrees on the surface. During the production, storage, transportation and sales of fresh eggs, It is easily affected by human and environmental factors, resulting in a decline in freshness. When consumers buy eggs, they can only see whether the eggs are obviously cracked, but they cannot judge whether the eggs are fresh or whether ther...

AI Technical Summary

Problems solved by technology

However, most of the eggs sold in domestic farmers’ markets have not been processed and graded, and there will be chicken blood, stains, cracks and microorganisms harmful to the human body to varying degrees on the surface. During the production, storage, transportation and sales of fresh eggs, It is easily affected by human and environmental factors, resulting in a decline in freshness. When consumers buy eggs, they can only see whether the eggs are obviously cracked, but they cannot judge whether the eggs are fresh or whether there are cracks. Microorganisms can easily enter cracked eggs. After buying home, the freshness will decrease at a faster rate

[0003] Patent CN201410817414.3 discloses a non-destructive detection system and detection method for egg freshness based on the Android system. By taking light-transmitting images of eggs and analyzing them, it can be determined whether there are cracks in the eggs and whether they are fresh. The detection of cracks is also through light transmission Based on image analysis, this method is prone to mistakes and omissions for relatively small cracks, and the error is large

In addition, the light-transmitting images of eggs are shot through the camera of a mobile phone, and the captured images will vary greatly due to factors such as shooting angle, shooting method, mobile phone camera specifications, and external light, so the technical solution is not very practical.

[0004] At present, the main method of crack detection is acoustic characteristics, that is, by analyzing the frequency response after knocking eggs, the frequency domain characteristics of undamaged eggs have a relatively obvious main frequency value, and the peak is prominent; the frequency domain characteristics of cracked eggs have no obvious main frequency value, The peak value is more chaotic, so the judgment accuracy is higher, but this method is more troublesome, and has higher requirements for the person who knocks the test, so it is not suitable for consumers to use

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