CN202037127U - Automatic egg quality detection and separation equipment - Google Patents

Abstract

The utility model discloses an automatic detection and sorting device for poultry egg quality, which relates to the technical field of poultry egg detection. The equipment includes an egg feeding device (100), an egg picking device (200), an egg moving device (300), an egg unloading device (400), a computer vision module (500), a control system module (600); an egg feeding device (100 ), the egg candling device (200), the egg moving device (300) and the egg unloading device (400) are connected in sequence; the egg candling device (200), the computer vision module (500), the control system module (600) and the egg unloading device ( 400) to connect in sequence. The utility model has the advantages of reasonable and feasible design, convenient operation and obvious effect, can be applied to other agricultural product detection, and has a good prospect of application and popularization.

Description

A poultry egg quality automatic detection and sorting equipment

technical field

The utility model relates to the technical field of poultry egg detection, in particular to an automatic detection and sorting equipment for poultry egg quality. Specifically, the utility model is a device that integrates the hardware for egg transmission and the software control system for egg detection and sorting, which can quickly and accurately identify the internal and external quality of poultry eggs and automatically sort them. A green detection device is provided in the market.

Background technique

Common poultry eggs include hens, duck eggs and goose eggs. In addition to fresh eggs, poultry eggs can also be marinated into salted eggs and preserved eggs, as well as mature eggs and marinated eggs. my country is a big country in the production and consumption of poultry eggs, and poultry egg quality testing is related to national economic interests and consumer health, especially the market demand for high-efficiency poultry egg quality testing technology is particularly urgent.

Egg detection technology has always been a research hotspot:

1. Use the odor characteristics and acoustic characteristics of poultry eggs to detect the quality of poultry eggs

"A device and method for detecting poultry egg freshness using volatile matter" (CN101419212A) and "A device and method for detecting poultry egg cracks using volatile matter" (CN101419213A) respectively disclose a freshness method for poultry eggs using volatile matter. The device uses the difference between the volatile matter of good eggs and cracked eggs to identify two kinds of eggs; "A device and method for detecting small cracks in poultry eggs" (CN101419196A) discloses a poultry egg using a tapping response signal. Egg crack detection device. The above patents are all static detection, which cannot meet the needs of online detection.

2. Use the optical characteristics of poultry eggs to detect the quality of poultry eggs

"Automatic Egg Sorting Machine" (CN86105958) discloses that the machine uses parallel light to scan eggs, and the light receiver converts the light signal transmitted by the illuminated egg into an electrical signal, and compares and decodes the voltage to obtain different egg quality. Discrimination result. The core technology of this machine is photoelectric technology, and the eggs are sorted one by one, so the work efficiency is not high.

3. Using computer vision technology to detect poultry egg quality

"Detection method of poultry egg size and egg shape index" (CN101509761A) discloses a detection method of poultry egg volume and surface area, "method for simultaneous detection of poultry egg size, egg shape index and weight" (CN1934935A) discloses A method for simultaneous detection of poultry egg size, egg shape index and weight, these two methods mainly use poultry egg images to calculate its appearance parameters and some image processing algorithms, and do not involve poultry egg internal quality detection; "a Method and device for detecting surface quality of poultry eggs" (CN1804620) uses computer vision technology and acoustic technology to detect surface quality such as cracks, stains, and deformities of poultry eggs. This invention only collects dynamic signals of poultry eggs on the transmission line, and finally It only shows the grade discrimination result, but fails to realize mechanical automatic sorting of eggs.

The above-mentioned detection of poultry egg quality either has a single technology, or the detection object is limited to the external quality of poultry eggs. After searching, it has not been found that the green poultry egg detection technology and sorting equipment related to the internal and external quality of poultry eggs are used in actual production.

Contents of the invention

The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art, and provide an automatic detection and sorting equipment for poultry egg quality.

The purpose of this utility model is achieved in that:

Using computer vision technology and mechanical actuators to cooperate, through a series of dynamic image processing and pattern recognition, to realize intelligent, non-destructive testing and automatic sorting of the internal and external quality of poultry eggs, that is, to collect dynamic images of group poultry eggs, and to image After analysis and processing, the color features, texture features and statistical moment features with large differences are extracted to characterize the parameters of different quality eggs, and the discriminant model is established by artificial neural network and other methods, and the model is used as a template to test the quality of eggs.

Specifically, the technical scheme of the utility model is as follows:

1. Automatic detection and sorting equipment for poultry egg quality (equipment for short)

This equipment includes egg delivery device, egg candling device, egg transfer device, egg unloading device, computer vision module and control system module;

Egg delivery device, egg candling device, egg transfer device and egg unloading device are connected sequentially;

The egg candling device, computer vision module, control system module and egg unloading device are connected in sequence.

2. Automatic detection and sorting method of poultry egg quality (method for short)

This method comprises the following steps:

① A number of poultry eggs of various qualities (such as good eggs, second-grade eggs, bad eggs, etc.) are carefully selected by the experienced workers of the egg farm through artificial egg picking;

② Put all kinds of poultry eggs on the egg roller, and the computer vision module collects dynamic images of multiple poultry eggs in the same row each time, classifies and builds an image library, performs image processing and analysis, extracts the characteristic parameters of various eggs, and establishes a discrimination mode, and conduct mode inspection and correction, and finally save the optimized mode in the computer;

③ In addition, select several types of poultry eggs that are the same as the modeling sample eggs, and use a pencil to mark each type of poultry eggs with numbers 1, 2, 3, etc.;

④ Randomly mix all kinds of poultry eggs, place them on the egg roller of the egg feeding device, and let it move to the right with the egg roller;

⑤The photoelectric sensor senses the arrival signal of the first row of poultry eggs, and immediately triggers the camera to collect the image, and sends it to the computer for analysis and processing, and uses the model established in step ② to make a judgment, and the computer temporarily stores the judgment result;

⑥The egg delivery device sends the first row of poultry eggs to the end of the right end of the transmission line, and the egg removal device uses the horizontal bar on the horizontal bar to hold up the eggs through the plane movement of the parallel four bars, and sends them to the horizontal channel perpendicular to the direction of egg delivery top;

⑦The computer issues an egg unloading command to the egg unloading device according to the arrival signal of poultry eggs sensed by the photoelectric sensors installed on both sides of the parallel four-bar connecting rod;

⑧The electromagnet of the egg unloading device is controlled by the control system module. When it is powered on, it lifts up the right end of the lever, causing the lever to lift up and unload the poultry eggs at the left end of the lever, and roll down the corresponding egg grade channel;

⑨Repeat steps ④ to ⑧ for detection and sorting of poultry eggs in other rows.

Working principle of the utility model:

The utility model uses an industrial camera to take images of groups of poultry eggs on the egg roller and conducts pattern recognition, and feeds back the discrimination results to the executive mechanism for action, thereby classifying and detecting various eggs.

Put the poultry eggs on the egg delivery roller of the egg delivery device, the photoelectric sensor of the control system module senses the arrival signal of the poultry eggs, triggers the camera to take pictures, and the computer performs pattern recognition on the images and stores the results temporarily, and installs them in the parallel four-bar linkage. The photoelectric sensors on the left and right sides of the rod sense the swing times of the connecting rod, count the counting signal through the multi-function data acquisition card, and feed back the result to the control system, and lift up the rod for placing eggs through the rising action of the electromagnet when it is energized , so that the egg rolls from the corresponding position into the corresponding channel to achieve the purpose of grading. The utility model realizes the use of machines instead of human eyes to realize the non-destructive automatic detection and sorting of poultry eggs, and is suitable for egg processing and quality detection industries.

The utility model has the following advantages and positive effects:

1. By installing photoelectric sensors on both sides of the parallel four-bar connecting rod, the accurate positioning of the eggs to be graded is realized, which is more accurate than the conventional time-delay operation.

2. Effectively combine the efficient processing and pattern discrimination of dynamic images of egg groups with mechanical automatic sorting.

3. The test of salted duck eggs detection and sorting proves that the detection accuracy rate of this method and equipment reaches 95%.

The test proves that the design of the utility model is reasonable and feasible, the operation is simple and convenient, and the effect is obvious.

Description of drawings

Fig. 1 is the structural block diagram of this equipment;

Figure 2 is a schematic diagram of the main hardware distribution of the device (top view);

Fig. 3 is a structural schematic diagram of an egg feeding device;

Fig. 4 is a structural schematic diagram of an egg candling device and a vision module;

Fig. 5 is a schematic structural view of the egg removal device;

Fig. 6 is the structural representation of egg unloading device;

Fig. 7 is a computer vision module flowchart;

Fig. 8 is a general flowchart of the software control system.

in:

100 - egg delivery device,

110-frame, 120-double cone egg roller, 130-chain, 140-sprocket;

200-according device

210-light source frame, 220-light source, 230-light chamber;

300-egg removal device

310-Egg Tray, 320-Parallel Four, 330-Small Sprocket, 340-Chain,

350-eccentric large sprocket, 360-tensioner, 370-spring;

400-egg unloading device

410-lever, 420-egg channel;

500-Computer Vision Module

510-camera, 520-image acquisition card, 530-computer;

600-control system module,

610-sensor,

611-trigger sensor, 612-count sensor;

620-multi-function data acquisition card, 630-relay board, 640-electromagnet.

Detailed ways

Below in conjunction with accompanying drawing and embodiment describe in detail:

The test sample eggs of this embodiment are provided by Jiaolong Egg Products Company of Hubei Province, and the salted duck eggs are divided into 4 categories according to the manufacturer's requirements: good eggs, unsalted eggs, decongested yellow eggs and black yellow eggs (rotten eggs).

1. Equipment

1. Overall

As shown in Figures 1 and 2, this equipment includes an egg delivery device 100, an egg candling device 200, an egg removal device 300, an egg unloading device 400, a computer vision module 500, and a control system module 600;

Egg feeding device 100, egg candling device 200, egg removing device 300 and egg unloading device 400 are connected in sequence;

The egg candling device 200, the computer vision module 500, the control system module 600 and the egg unloading device 400 are connected in sequence.

2. Function block

1) Egg feeding device 100

As shown in Figure 3, the egg delivery device 100 is a chain transmission machine, including a frame 110, an egg roller 120, a chain 130, a sprocket 140, and an egg roller shaft 150;

A sprocket 140 is arranged on the left and right fulcrums of the frame 110 , the chain 130 wraps the sprocket 140 to form a conveyor belt, and the egg roller 120 and an egg roller shaft 150 are arranged on the chain 130 .

working principle:

Each row of egg rollers 120 puts 3 salted duck eggs; during operation, the external power drives the sprocket 140 to rotate, and the sprocket 140 drives the chain 130 and the egg roller shaft 150 on it to make a circular motion, and the egg roller shaft 150 drives the egg roller shaft 150 on it. The egg roller 120 moves, and the egg roller 120 moves along the transmission line with the salted duck eggs.

2) Candling device 200

As shown in Figure 4, the egg lighting device 200 includes a light source frame 210, a light source 220, and a sealed light chamber 230;

The light source 220 is set in the middle of the upper and lower layers of egg rollers 120, and the light direction is upward;

The light chamber 230 that is arranged on the upper egg roller 120 is a square box with a small circular hole in the middle of its top surface.

3) Egg removal device 300

As shown in Figure 5, the egg moving device 300 is set at the rightmost end of the egg feeding device 100 and is perpendicular to it, including an egg tray 310, a parallel four rod 320, a small sprocket 330, a chain 340, an eccentric large sprocket 350, and a tension wheel 360 and spring 370;

The chain 340 is wrapped on the left end small sprocket 330 and the right end eccentric large sprocket 350 to form a transmission mechanism, and the tension wheel 360 is pressed on the top of the chain 340 by a spring 370; the lower end of the left vertical bar of the parallel four bar 320 and the small sprocket 330 connection, and an egg tray 310 is arranged on the upper crossbar of the parallelogram 320.

working principle:

The large eccentric sprocket 350 rotates at a constant speed. Through the transmission of the chain 340 and the compression of the tension wheel 360, the small sprocket 330 is driven to rotate at a variable speed, so that the parallel four bars 320 connected to the small sprocket 330 also rotate at a variable speed. The egg tray 310 provided on the crossbar transmits the salted duck eggs on its upper end horizontally.

4) Egg unloading device 400

As shown in Figures 6 and 2, the egg unloading device 400 includes a lever mechanism 410 and an egg collection channel 420;

12 lever mechanisms 410 are perpendicular to the direction of egg removal, and are equidistantly installed above the parallel four rods 320 of the egg removal device 300. Each lever mechanism 410 corresponds to an egg collection channel 420. During operation, one end of the lever is poultry eggs, and the other end Below is the electromagnet 640 . The egg grade channel 420 collects all kinds of eggs that roll down because the electromagnet 640 jacks up the lever.

5) Computer vision module 500

As shown in Figures 1 and 4, the computer vision module 500 includes a camera 510, an image acquisition card 520 and a computer 530 connected in sequence; the camera 530 is fixed above the light chamber 230, and the lens of the camera 530 extends into the small hole on the top of the light chamber 230 , The field of view is designed to be 40°.

6) Control system module 600

As shown in Figure 1, the control system module 600 includes (2) photoelectric sensors 610, (1) multi-function data acquisition card 620, (1) relay board 630 and (multiple) electromagnets 640 connected in sequence;

The photoelectric sensor 610 includes a trigger sensor 611 and a count sensor 612;

The trigger sensor 611 is installed inside the light chamber 230 close to the egg-feeding direction, and is used to sense the position of the egg entering the light chamber 230 and trigger the camera 530 to take pictures; The number of times that the bar swings is used to accurately locate the grading positions of various eggs; each electromagnet 640 is correspondingly installed under the lever at the beginning of a channel.

2. Method

1. Computer vision module process

As shown in Figure 7, the computer vision module process is:

①The sensor senses that the egg reaches the light chamber 71;

② The camera collects group poultry egg images 72;

③ The image acquisition card transmits data to the computer 73;

④Computer analysis and processing image 74;

⑤ The computer conducts pattern recognition 75 .

2. The overall flow of the software control system

As shown in Figure 8, the overall flow of the software control system is

①Start 81;

② Trigger to collect a frame of group poultry egg image 82;

③ group poultry egg image preprocessing 83;

④ Group egg image feature extraction 84;

⑤ Group poultry egg image segmentation and positioning 85;

⑥ Group egg image feature extraction 86;

⑦ Group poultry egg image quality classification 87;

8. Group poultry egg image level storage, enter the decrement counting and grading thread 88;

⑨Judge whether the countdown of the sensor reaches 89, if yes, go to the next step, otherwise go to step ①;

⑩Start the drive corresponding to the electromagnet action thread (first pull, delay, disconnect) 90.

3. Test results

Referring to the scatter diagram and Table 1 of the image feature parameters of the experiment, the image feature parameters are selected from color parameters (R, G, B, V), texture parameters (GW1, BW1, BW4), statistical moment parameters ( average brightness, average contrast, uniformity). Modeling adopts the BP neural network mode, and the BP network adopts a three-layer feed-forward structure, which are input layer, hidden layer and output layer. The number of nodes in the input layer is equal to the number of indicators (color, texture and three statistical moment features) 10, the output layer has 4 nodes (corresponding to different 4 types of salted duck egg codes 1000, 0100, 0010, 0001), and the hidden layer The number of nodes is determined to be 18, which is determined by an empirical formula.

Statistical moment parameters of table 14 class salted duck eggs

egg type average brightness average contrast R third moment Consistency entropy good eggs 21359.44 25053.71 0.999896 1.17E+08 0.309999 3.989103 unmarinated eggs 19735.35 23014.99 0.999877 1.07E+08 0.292097 4.236113 Devolume loose yolk eggs 15708.28 18694.89 0.999814 49521587 0.325051 3.92166 black yolk egg 8873.232 16965.78 0.999774 1.16E+08 0.597603 2.362835

After inspection, the correct rate of mode discrimination is 95%, and no loose yolk eggs and black yolk eggs are misjudged as good eggs, which meets the production requirements of egg products enterprises.

Claims (7)

1. An automatic detection and sorting device for poultry egg quality, characterized in that: It includes an egg delivery device (100), an egg candling device (200), an egg transfer device (300), an egg unloading device (400), a computer vision module (500), and a control system module (600); Egg delivery device (100), egg candling device (200), egg removal device (300) and egg unloading device (400) are connected in sequence; The egg candling device (200), the computer vision module (500), the control system module (600) and the egg unloading device (400) are connected in sequence. 2. A kind of poultry egg quality automatic detection and sorting equipment according to claim 1, characterized in that: The egg feeding device (100) is a chain transmission machine, comprising a frame (110), an egg roller (120), a chain (130), a sprocket (140) and an egg roller shaft (150); A sprocket (140) is arranged on the left and right fulcrums of the frame (110), the chain 130 wraps the sprocket (140) to form a conveyor belt, and an egg roller (120) and an egg roller shaft (150) are arranged on the chain (130). . 3. A kind of poultry egg quality automatic detection and sorting equipment according to claim 1, characterized in that: The egg candling device (200) includes a light source frame (210), a light source (220) and an airtight light chamber (230); The light source (220) is arranged in the middle of the upper and lower layers of egg rollers (120), and the light direction is upward; The light chamber (230) that is arranged on upper layer egg roller (120) top is a square box, and a small circular hole is arranged in the middle of its top surface. 4. A kind of poultry egg quality automatic detection and sorting equipment according to claim 1, characterized in that: The egg moving device (300) is arranged at the rightmost end of the egg feeding device (100) and at a position perpendicular thereto, including an egg tray (310), a parallelogram (320), a small sprocket (330), a chain (340 ), large eccentric sprocket (350), tensioner (360) and spring (370); The chain (340) is wrapped on the left end small sprocket (330) and the right end eccentric large sprocket (350) to form a transmission mechanism, and the tension wheel (360) is pressed on the top of the chain (340) by the spring (370); parallel four The lower end of the left vertical bar of the bar (320) is connected with the small sprocket (330), and the upper cross bar of the parallelogram (320) is provided with an egg holder (310). 5. A kind of poultry egg quality automatic detection and sorting equipment according to claim 1, characterized in that: The egg unloading device (400) includes a lever mechanism (410) and an egg collection channel (420); A plurality of lever mechanisms (410) are perpendicular to the direction of egg removal, and are equidistantly installed above the parallelogram (320) of the egg removal device (300), each lever mechanism (410) corresponds to an egg collection channel (420), One end of the lever is a poultry egg during operation, and the bottom of the other end is an electromagnet (640). 6. A kind of poultry egg quality automatic detection and sorting equipment according to claim 1, characterized in that: The computer vision module (500) comprises a camera (510), an image acquisition card (520) and a computer (530) connected in sequence; the camera (530) is fixed above the light chamber (230), and the lens of the camera (530) extends into the small hole on top of the light chamber (230). 7. A kind of poultry egg quality automatic detection and sorting equipment according to claim 1, characterized in that: The control system module (600) includes a photoelectric sensor (610), a multi-function data acquisition card (620), a relay board (630) and an electromagnet (640) connected in sequence; The photoelectric sensor (610) includes a trigger sensor (611) and a counting sensor (612); The trigger sensor (611) is installed inside the light chamber (230) close to the direction of the egg, and is used to sense the position of the egg entering the light chamber (230) and trigger the camera (530) to take pictures; The two sides of the connecting rod of 320) are used to sense the number of times the connecting rod swings, so as to accurately locate the grading positions of various eggs; each electromagnet (640) is correspondingly installed under the lever at the beginning of a channel.

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