Optical fiber spectrum grading detection device and method for fertilized eggs in pre-incubation duck eggs

Abstract

The invention discloses an optical fiber spectrum grading detection device and method for fertilized eggs in pre-incubation duck eggs. The device comprises a light chamber, wherein a perforated conveyor belt is arranged at the bottom of the light chamber, and holes are formed in the perforated conveyor belt and used for placing the pre-incubation duck eggs; a condensing lens is arranged below theperforated conveyor belt and connected with a halogen light source through a quartz optical fiber; a collimating lens and a photoelectric sensor are arranged in the light chamber, the collimating lensand the condensing lens are arranged in a vertically corresponding manner, the collimating lens is connected with an optical fiber spectrometer through an optical fiber, and the optical fiber spectrometer is connected with a computer; the photoelectric sensor is connected with a PLC (programmable logic controller), and the PLC is connected with the computer; and one end of the perforated conveyorbelt is connected with a motor, and the other end of the perforated conveyor belt is connected with an egg picking device. With the adoption of the device and the method, the fertilized eggs in the duck eggs can be subjected to rapid and accurate nondestructive detection before incubation.

Description

technical field [0001] The invention relates to the technical field of on-line grading detection of agricultural products and hatching of livestock and poultry breeding, in particular to an optical fiber spectrum grading detection device and method for fertilized eggs in duck eggs before hatching. Background technique [0002] According to the data provided by the China Animal Husbandry Association and the World Food and Agriculture Organization (FAO) in 2018, the world's meat ducks are about 4.74 billion, and the laying ducks are about 187 million. my country's duck breeding accounts for 74.3% of the world's duck breeding. This shows that my country's duck egg hatching industry needs to hatch billions of ducklings every year to meet domestic breeding needs. However, at present, domestic duck breeding methods are based on free-range breeding, resulting in a natural fertilization rate of duck eggs lower than 80%. At present, in my country's poultry egg hatching industry, the...

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Problems solved by technology

Zhu Zhihui et al. used hyperspectral technology to collect spectral and image information of eggs before hatching, and established a discriminative model for fertilized eggs and nonfertilized eggs by using correlation vector machines. The identification accuracy rate can reach 96%, but hyperspectral equipment is expensive and difficult to detect. The efficiency is low, and it is difficult to deploy to actual production; use near-infrared diffuse reflectance spectroscopy (Zhu Zhihui, 2012, Spectroscopy and Spectral Analysis) to collect spectral information of pre-hatch eggs, after relevant preprocessing, use Mahalanobis distance to establish discrimination The model recognition accuracy rate is 91.67%, but the diffuse reflectance spectrum technology also has low efficiency; Qin Wuchang et al. used the visible-near-infrared transmission spectrum technology to collect the spectral information of breeding eggs after 3 days of incubation, and established the method after principal component analysis. Fisher discriminant model, the accuracy rate is as high as 96.58%

However, at present, most researchers use spectral technology to statically detect whether the eggs are fertilized before hatching. The models established by static detection have poor generalization ability and often can only stay in the laboratory stage, and the traditional machine learning method is unstable in modeling , it is difficult to apply it to actual production; in addition, the above studies are all aimed at breeding eggs, and it is more difficult to detect breeding duck eggs compared with chicken eggs. There are many stains on the surface, and the color of the eggshells of other kinds of duck eggs is quite different. There are also green shells and white shells in the same species, which makes scholars seldom study duck eggs. fertilized eggs

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