Multi-section track type online detection device and method for cracks on eggs on basis of vibrational acoustic characteristics

A crack detection and vibro-acoustic technology, which is applied in the field of multi-segment track type egg crack online detection devices, can solve the problems of reducing the versatility of equipment, etc., and achieve the simplification of sound excitation devices and control methods, simple control methods, and improved signal-to-noise ratio. Effect

Active Publication Date: 2015-06-03
ZHEJIANG UNIV
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This means that a new knowledge base needs to be built before testing different varieties and different batches of eggs, result

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  • Multi-section track type online detection device and method for cracks on eggs on basis of vibrational acoustic characteristics
  • Multi-section track type online detection device and method for cracks on eggs on basis of vibrational acoustic characteristics
  • Multi-section track type online detection device and method for cracks on eggs on basis of vibrational acoustic characteristics

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with drawings and embodiments.

[0046] Such as figure 1 As shown, the present invention includes a crack detection track pair 10, a propulsion assembly 4, two annular single-sided bent plate chains 5, a signal conditioning circuit 6 and a DSP signal processing module 7; a plurality of crack detection track pairs 10 with the same structure along the bird The straight-line intervals in the conveying direction of the eggs 3 are evenly distributed as a row of tracks for the rolling of the eggs 3, and the crack detection track pair 10 is provided with two ring-shaped single-sided curved plate chains 5 installed in parallel and opposed to each other. The chains 5 are respectively installed on both sides along the conveying direction of the poultry eggs 3, and the propulsion components 4 are installed between the two unilateral curved plate chains 5, which are uniformly distributed along the circular interva...

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Abstract

The invention discloses a multi-section track type online detection device and method for cracks on eggs on the basis of vibrational acoustic characteristics. The multi-section track type online detection device is characterized in that a plurality of crack detecting track pairs are uniformly distributed at interval to form a track; two sides just above the track are provided with ring-shaped single-edge bending plate chains, and a pushing component is arranged between the ring-shaped single-edge bending plate chains; an incremental rotary encoder on a driving shaft and opposite-type photoelectric switches at the two sides of a crack detecting track assembly are connected with a DSP (Digital Signal Processor) module; each crack detecting track pair is connected with the DSP module by a signal conditioning circuit; the pushing component pushes the eggs to roll along the track, the eggs roll and collide with a groove of the track to make a sound, a microphone converts the sound into an electric signal which is then filtered, amplified and after-processed by analog-digital conversion, and comprehensive judgment is carried out on the cracks by time-frequency domain analysis. The multi-section track type online detection device and method disclosed by the invention have the advantages that fast online recognition of the cracks is realized by a mode that the eggs roll for multiple sections actively and continuously to generate acoustic signals, and a new mode with simple mechanism, convenience in control and high recognition rate is provided for online crack detection of the eggs.

Description

technical field [0001] The invention relates to the field of on-line non-destructive detection for poultry eggs, in particular to a multi-segment track-type poultry egg crack on-line detection device and method with vibro-acoustic characteristics. Background technique [0002] The crack detection of poultry eggs is an important process of poultry egg quality grading. The existence of cracks in poultry eggs will reduce the strength of the eggshell and be easily damaged, which is not conducive to the collection, transportation, packaging and storage of poultry eggs. In addition, pathogenic bacteria can enter the egg body more easily through cracks, shorten the storage period of poultry eggs, and even infect the eater. Therefore, in the modern poultry egg detection and grading system, cracks are an important indicator, and it is necessary to identify and eliminate cracked eggs before they enter the market through appropriate detection methods. [0003] At present, in practica...

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Application Information

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IPC IPC(8): G01N29/14G01N29/22B65G49/00
Inventor 王剑平张剑一王海军蒋焕煜应义斌
Owner ZHEJIANG UNIV
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