Rolling type online egg crack detecting device on basis of parallel piezoelectric film arrays

Abstract

The invention discloses a rolling type online egg crack detecting device on the basis of parallel piezoelectric film arrays. The rolling type online egg crack detecting device is characterized in that egg pushing mechanisms are equidistantly arranged on a conveying chain, and eggs are clamped between the adjacent egg pushing mechanisms; two egg tracks which are parallel to the conveying chain are symmetrically arranged on two sides of the conveying chain and sequentially include a front-end track, a detection track and a rear-end track along the conveying direction, and the N parallel piezoelectric film arrays which are uniformly arrayed along the conveying direction are mounted on the detection track and pass a signal conditioning circuit and a data acquiring and processing system. The rolling type online egg crack detecting device has the advantages that egg crack can be detected in an online manner, signal excitation devices can be simplified, multiple points on the surfaces of the eggs can be continuously detected, the problem of misjudgment or missing detection or the like due to the fact that signal difference is caused by difference of knocking force and crack is not knocked can be solved, and the detection rate can be increased.

Description

technical field [0001] The invention relates to an online crack detection device for poultry eggs, in particular to a rolling-type online crack detection device for poultry eggs based on a parallel piezoelectric film array, and belongs to the technical field of online poultry egg quality detection. Background technique [0002] On-line crack detection of poultry eggs is an important link in the quality inspection and grading of poultry eggs. When cracks appear in the eggshell of poultry eggs, it will bring many problems to the storage, transportation and processing of poultry eggs. For example, microorganisms can easily invade the inside of the egg from the cracks, resulting in shortened shelf life. In addition, the damaged poultry eggs will also pollute the surrounding intact eggs, causing cross-contamination and causing economic losses. In my country, duck eggs, as the raw material of preserved eggs and salted duck eggs, are particularly important for the detection of cra...

AI Technical Summary

Problems solved by technology

Although the acoustic detection method is effective, it has certain disadvantages: (1) in order to improve the detection rate, it is necessary to detect the entire surface of the poultry egg, and increase the knocking points so that the cracks can be knocked into the crack; (2) in order to To prevent damage to the egg shell due to excessive percussion force, the percussion force must be strictly controlled; (3) to ensure the consistency of the percussion force and to adapt to eggs of different sizes and shapes; (4) to filter out various external sources contained in the sound signal Interfering with noise, improving the signal-to-noise ratio of the signal; (5) Establishing a crack discrimination model with good reliability and strong adaptability, which is suitable for different batches and varieties of poultry eggs

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