A freshness testing device for poultry eggs with a refrigeration structure

Abstract

This invention discloses a poultry egg freshness detection device with a refrigeration structure, comprising a refrigeration box and a detection group; the detection group is located inside the refrigeration box; the refrigeration box includes a box body and a door; the side wall of the box body includes a groove for mounting the detection group; the detection group includes a shelf, a light-emitting plate, and a camera; the shelf includes a shelf body, an egg placement slot, an indicator light, and a gravity sensor; the light-emitting plate includes a light-emitting plate body and a light bulb; the poultry egg freshness detection device with a refrigeration structure disclosed in this invention can detect the freshness of poultry eggs of different breeds, with a wide detection range, facilitating diverse detection; it judges freshness based on multiple criteria, reducing detection errors; and the method is simple and easy to operate, suitable for detecting the freshness of large quantities of poultry eggs, saving detection time.

Description

Technical Field

[0001] This invention relates to the field of freshness detection technology, and in particular to a poultry egg freshness detection device with a refrigeration structure. Background Technology

[0002] Poultry eggs are a general term for the eggs of various edible birds. Commonly, poultry eggs include chicken eggs, duck eggs, goose eggs, ostrich eggs, quail eggs, and more than ten other types. While the nutritional content of eggs varies slightly, the differences are generally minor. There are also various ways to test the freshness of poultry eggs. Simple methods for consumers include looking, shaking, and testing. Looking involves checking if the eggshell has a frosty powdery coating, a bright color, and pores. Alternatively, hold the egg in your left hand in a cupped shape, place it at the end with your right hand, and hold it up to sunlight. Fresh eggs are slightly reddish, translucent, and have a clear yolk outline. If the egg is dark, opaque, or has spots, it indicates spoilage. Shaking involves gently shaking the egg; a silent shaking indicates a fresh egg, while a sloshing sound indicates an old egg. Testing involves placing the egg in cold water; a sinking egg is fresh, while a floating egg is spoiled. However, these simple methods for testing egg freshness have a large margin of error and require individual observation, making them inefficient.

[0003] The existing patent CN201910217506.0 discloses a poultry egg freshness detection device and method that uses a light source to illuminate the poultry egg so that the outer contour and air cell contour of the poultry egg are imaged on a plane mirror, and uses a collection unit to collect the outer contour image and air cell contour image of the poultry egg on the plane mirror. The detection device has a simple structure and is used for civilian purposes, but it has the drawbacks of only being able to detect a single poultry egg in a single detection operation. Detecting a large number of poultry eggs is time-consuming and labor-intensive. In addition, it only uses a light source to illuminate the poultry egg so that the outer contour and air cell contour of the poultry egg are imaged on a plane mirror, which provides only a single judgment criterion and results in low accuracy.

[0004] Existing patent CN202021775864.8 discloses an egg freshness detection device. This device involves setting up a shell and an egg tray module placed inside the shell. Eggs are placed between two rollers and rotate with the rollers. An image acquisition module continuously captures two-dimensional images of the egg during rotation using its camera, and feeds these images back to a display module. The two-dimensional images are then used to invert the three-dimensional information of the yolk, air cell, and whole egg to determine the egg's freshness. The processed images are then displayed. While this device has a simple structure and is easy to carry, it suffers from drawbacks: it can only detect a single egg, making the detection of a large number of eggs time-consuming and labor-intensive. Furthermore, it relies on a single criterion for judgment, resulting in low accuracy of the detection results.

[0005] The existing patent CN202121072090.7 discloses a fresh egg freshness detection device, which uses a conveyor plate to guide the eggs to be tested through the detector in an orderly manner. When the signal light next to the egg is in the center of the camera, the camera detects the position of the signal light and takes a picture. The computer analyzes the height of the air cell at the blunt end of the egg in the picture to determine whether it is a fresh egg. The signal light changes color accordingly to remind the staff to handle it, thus completing the fresh egg freshness detection work. However, this detection device does not have a refrigeration structure, which may cause the eggs to spoil during the detection process. In addition, it has the drawback of detecting fresh egg freshness only by detecting the height of the air cell, which is simple but has a large detection error.

[0006] Therefore, those skilled in the art are dedicated to developing a poultry egg freshness detection device with a refrigeration structure to overcome the shortcomings of the existing technology. Summary of the Invention

[0007] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is that the freshness detection equipment disclosed in the prior art has the following defects: it does not have a refrigeration structure, which may lead to the spoilage of poultry eggs during the detection process; it only uses one criterion to detect freshness; the detection method is simple; and the detection error is large.

[0008] To achieve the above objectives, the present invention provides a freshness detection device, including a refrigerator and a detection group; the detection group is located inside the refrigerator.

[0009] Furthermore, the refrigerator includes a refrigerator body and a refrigerator door; the side wall of the refrigerator body includes a groove for installing the detection group;

[0010] Furthermore, the detection group includes a shelf, a light-emitting plate, and cameras; the light-emitting plate is located below the shelf; there are four cameras, located on the inner wall of the refrigerator and on the inner side of the refrigerator door; the cameras are located above the shelf, parallel to the egg; the cameras are connected to the central processing unit.

[0011] Furthermore, the storage board includes a storage board body, egg placement slots, indicator lights, and a gravity sensor; the storage board body has multiple circular openings; the gravity sensor is located inside the egg placement slots; the gravity sensor is connected to the input terminal of the central processing unit; there are multiple egg placement slots, which are arc-shaped grooves with mounting plates; the egg placement slots are available in various sizes and are installed on the mounting slots of the storage board body for placing poultry eggs of different sizes; the egg placement slots and the storage board body are made of transparent material; the indicator lights are installed on the storage board body, located on the side of the egg placement slots; there are multiple storage board bodies; all storage board bodies are fixedly connected to form a main storage board, which is installed inside the refrigerator through the grooves of the refrigerator body, and the main storage board can be pulled out for placing and removing poultry eggs; the indicator lights are connected to the output terminal of the central processing unit;

[0012] Furthermore, the light-emitting board includes a light-emitting board body and a light-emitting bulb; the light-emitting board body includes an opening for installing the light-emitting bulb; the light-emitting bulb is located directly below the egg placement slot; there are multiple light-emitting bulbs and light-emitting board bodies, and each light-emitting board body is fixedly connected to form a total light-emitting board; the total light-emitting board can be pulled out for easy maintenance; the light-emitting bulb is connected to the output terminal of the central processing unit.

[0013] Furthermore, the aforementioned shelf, egg tray, indicator light, and gravity sensor constitute a poultry egg placement group; the poultry egg placement group is arranged in two rows, front and back, and consists of 1 to 20 groups;

[0014] Furthermore, each light-emitting panel and each light-emitting bulb constitute a light-emitting group; there are 1 to 20 light-emitting groups.

[0015] Furthermore, the detection group has 1-10 groups;

[0016] Furthermore, the fixed connection is achieved by welding, bonding, or integral molding;

[0017] In a specific embodiment of the present invention, the refrigeration box is a refrigerator;

[0018] In a specific embodiment of the present invention, the poultry egg placement group is arranged in two rows, front and back, including 6 groups;

[0019] In a specific embodiment of the present invention, the light-emitting group is arranged in two rows, front and back, including 6 groups;

[0020] In a specific embodiment of the present invention, the arc-shaped groove of the egg placement slot is the size of an egg;

[0021] In another specific embodiment of the present invention, the arc-shaped groove of the egg placement slot is the size of a quail egg;

[0022] In another specific embodiment of the present invention, the arc-shaped groove of the egg placement slot is the size of an ostrich egg;

[0023] In a specific embodiment of the present invention, the detection group consists of one group;

[0024] In a specific embodiment of the present invention, the fixed connection is integrally formed;

[0025] By adopting the above solution, the poultry egg freshness detection device with refrigeration structure disclosed in this invention has the following advantages:

[0026] (1) The poultry egg freshness detection device with refrigeration structure of the present invention, compared with the existing poultry egg freshness detection device, can detect the freshness of different varieties of poultry eggs by selecting arc grooves of different sizes, with a wide detection range and is conducive to detection diversity.

[0027] (2) The poultry egg freshness detection device with refrigeration structure of the present invention initially judges the freshness of poultry eggs by detecting their weight. Then, with the cooperation of light bulbs and cameras, poultry eggs with abnormal weight are illuminated, and the photos taken by the camera are transmitted to the central processing unit to determine whether the poultry egg has cracks or is stuck to the shell, and perform the second step of freshness judgment. Then, the air cell height and poultry egg height are detected by using the photos taken. The Hough value is calculated using the detection data. The final detection data is integrated, and the indicator lights are lit up with green, yellow and red lights respectively for high, medium and low freshness, which facilitates the operator to perform the next operation. Freshness is judged by multiple judgment criteria, reducing detection errors.

[0028] (3) The poultry egg freshness detection device with refrigeration structure of the present invention is simple and easy to operate, and can be used for the freshness detection of a large number of poultry eggs, saving detection time.

[0029] In summary, the poultry egg freshness detection device with refrigeration structure disclosed in this invention can detect the freshness of poultry eggs of different breeds, with a wide detection range, which is conducive to detection diversity; it judges freshness through multiple judgment criteria, reducing detection errors; and the method is simple and easy to operate, which can be used for the freshness detection of a large number of poultry eggs, saving detection time.

[0030] The following will further explain the concept, specific technical solution and technical effects of the present invention in conjunction with specific embodiments, so as to fully understand the purpose, features and effects of the present invention. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the poultry egg freshness detection device with a refrigeration structure according to Embodiment 1 of the present invention;

[0032] Figure 2This is a schematic diagram of the internal structure of the poultry egg freshness detection device with a refrigeration structure according to Embodiment 1 of the present invention;

[0033] Figure 3 This is a schematic diagram showing the disassembled structure of the placement plate and egg placement slot of the poultry egg freshness detection device with refrigeration structure of the present invention.

[0034] In the picture, 1. Refrigerator body; 2. Refrigerator door; 3. Camera; 4. Indicator light; 5. Light bulb; 6. Light panel; 7. Shelf panel; 8. Egg tray; Detailed Implementation

[0035] The following describes several preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, which are described exemplarily, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0036] If there are experimental methods that do not specify the conditions, they are usually carried out according to the standard conditions, such as the relevant instructions or manuals.

[0037] like Figure 1-3 As shown in the specific embodiment of the present invention, a poultry egg freshness detection device with a refrigeration structure includes a refrigeration box and a detection group; the detection group is located inside the refrigeration box; the refrigeration box is a refrigerator, including a refrigeration box body 1 and a refrigeration box door 2; the side wall of the refrigeration box body 1 includes a groove for installing the detection group; the detection group has one set, including a shelf, a light-emitting plate, and cameras 3; the light-emitting plate is located below the shelf; there are four cameras 3, respectively located on the inner side wall of the refrigeration box body 1 and the inner side of the refrigeration box door 2; the cameras 3 are located above the shelf and parallel to the egg; the cameras 3 are connected to a central processing unit;

[0038] The storage board includes a storage board body 7, an egg placement slot 8, an indicator light 4, and a gravity sensor. The storage board body 7 has multiple circular openings. The gravity sensor is located inside the egg placement slot 8 and is connected to the input terminal of the central processing unit. There are multiple egg placement slots 8, each being an arc-shaped groove with a mounting plate. The arc-shaped grooves of the egg placement slots 8 are the size of an egg. The egg placement slots 8 and the storage board body 7 are made of transparent material. The indicator light 4 is mounted on the storage board body 7, located to the side of the egg placement slot 8. There are six storage board bodies 7, integrally formed and connected to form a main storage board, which is installed inside the refrigerator via a groove in the refrigerator body 1. The main storage board can be pulled out for placing and removing eggs. The indicator light 4 is connected to the output terminal of the central processing unit.

[0039] The light-emitting panel includes a light-emitting panel body 6 and light-emitting bulbs 5; the light-emitting panel body 6 has an opening for mounting the light-emitting bulbs 5; the light-emitting bulbs 5 are located directly below the egg placement slot 8; there are 6 light-emitting bulbs 5 and 6 light-emitting panel bodies 6, and each light-emitting panel body 6 is integrally formed to form a total light-emitting panel; the total light-emitting panel can be pulled out for easy maintenance; the light-emitting bulbs 5 are connected to the output terminal of the central processing unit.

[0040] The egg placement group consists of a shelf 7, an egg tray 8, an indicator light 4, and a gravity sensor; the egg placement group is arranged in two rows, front and back, for a total of 6 groups.

[0041] The light-emitting panel 6 and the light-emitting bulb 5 constitute a light-emitting group; there are 6 light-emitting groups.

[0042] The Huff value is a standard used by the U.S. Department of Agriculture to measure and indicate the freshness of eggs. Fresh eggs typically have a Huff value between 70 and 82. Edible eggs have a Huff value above 72. The symbol is Ha. Table 1 shows the criteria for judging freshness based on the Huff value. The formula for calculating the Huff value is:

[0043] Ha=100*1g[h+7.57-1.7*(w^0.37)]

[0044] Where h (mm) is the height of the egg measured, and w (g) is the mass of the egg measured;

[0045] When the Huff value is greater than or equal to 72, and the freshness is grade AA or higher, the central processing unit determines that the protein stability is high and fresh, suitable for consumption, and the indicator light illuminates green; when the Huff value is between 60 and 72, and the freshness is grade A, the central processing unit determines that the protein stability is edible, and the indicator light illuminates yellow; when the Huff value is less than 60, and the freshness is grade B, C or lower, the central processing unit determines that the protein stability is unsuitable / inedible, and the indicator light illuminates red.

[0046] Table 1

[0047] Freshness Huff value protein stability AA grade or higher ≥72 High freshness, high nutritional value, suitable for consumers. Grade A 60～72 Edible by consumers Grade B 30～60 Not suitable for consumers to eat Grade C or lower ≤30 Not edible

[0048] Example 1: Freshness detection of eggs using a poultry egg freshness detection device with a refrigeration structure.

[0049] Step 1: Select an egg-sized egg tray 8 and install it on the shelf 7. Place the egg in the egg tray 8 with the air chamber facing upwards. Connect the device to the power supply and close the refrigerator door 2.

[0050] Step 2: Set the gravity sensor reading to a weight of less than 50g;

[0051] When the gravity sensor detects an egg weighing less than 50g, the data is transmitted to the central processing unit. The central processing unit controls the light bulb 5 corresponding to the abnormal egg to light up and controls the nearest camera 3 to work. The photos recorded by the camera 3 are transmitted to the central processing unit to determine whether there are cracks or whether the egg is stuck to the shell. Then, the height and quality of the egg are measured based on the photos taken, and the Hough value is calculated using the Hough unit calculation formula.

[0052] Result data:

[0053] After testing with the freshness testing equipment of Example 1, 3 out of the 6 eggs tested were abnormal. The first abnormal egg had no cracks and no shell sticking, and its Hough value was 60.58. When the Hough value is in the range of 60-72, it is grade A and judged to be edible by consumers, and indicator light 4 lights up yellow. The second abnormal egg had cracks but no shell sticking, and indicator light 4 directly lights up red. The third abnormal egg had no cracks but shell sticking, and indicator light 4 directly lights up red.

[0054] Example 2: Freshness detection of quail eggs using a poultry egg freshness detection device with a refrigeration structure.

[0055] Step 1: Select an egg placement slot 8 the size of a quail egg and install it on the shelf 7. Place the quail eggs in the egg placement slot 8 with the air chamber facing upwards. Connect the device to the power supply and close the refrigerator door 2.

[0056] Step 2: Set the gravity sensor reading to a weight of less than 7g;

[0057] When the gravity sensor detects a quail egg weighing less than 7g, the data is transmitted to the central processing unit. The central processing unit controls the light bulb 5 corresponding to the abnormal quail egg to light up and controls the nearest camera 3 to work. The photos recorded by the camera 3 are transmitted to the central processing unit to determine whether there are cracks or whether the egg is stuck to the shell. Then, the height and quality of the egg are measured based on the photos taken, and the Hough value is calculated using the Hough unit calculation formula.

[0058] Result data:

[0059] After testing with the freshness testing equipment of Example 2, two of the six quail eggs tested were found to be abnormal. One of the abnormal quail eggs had no cracks and no shell sticking, and its Huff value was 35.63. When the Huff value is in the range of 30-60, it is grade B and is judged to be unsuitable for consumer consumption. Indicator light 4 lit up red. The other abnormal quail egg had no cracks and no shell sticking, and its Huff value was 65.98. When the Huff value is in the range of 60-72, it is grade A and is judged to be edible for consumer consumption. Indicator light 4 lit up yellow.

[0060] Example 3: Freshness detection of ostrich eggs using a poultry egg freshness detection device with a refrigeration structure.

[0061] Step 1: Select an egg placement tray 8 the size of an ostrich egg and install it on the shelf 7. Place the ostrich egg in the egg placement tray 8 with the air chamber facing upwards. Connect the device to the power supply and close the refrigerator door 2.

[0062] Step 2: Set the gravity sensor reading to a weight of less than 1 kg;

[0063] When the gravity sensor detects an ostrich egg weighing less than 1kg, the data is transmitted to the central processing unit. The central processing unit controls the light bulb 5 corresponding to the abnormal ostrich egg to light up and controls the nearest camera 3 to work. The photos recorded by the camera 3 are transmitted to the central processing unit to determine whether there are cracks or whether the egg is stuck to the shell. The height and quality of the egg are measured based on the photos taken, and the Hough value is calculated using the Hough unit calculation formula.

[0064] Result data:

[0065] After being tested by the freshness testing equipment in Example 3, one of the six ostrich eggs tested was an abnormal ostrich egg. The abnormal ostrich egg had no cracks and no shell sticking. The Hough value of the abnormal ostrich egg was 29.65. When the Hough value is less than 30, it is grade C and is judged to be inedible by consumers. Indicator light 4 turned red.

[0066] Comparative Example 4

[0067] The freshness of eggs was detected using the refrigeration equipment and poultry egg freshness detection device and method disclosed in patent CN201910217506.0.

[0068] Step 1: Place the egg sample to be tested on the placement unit. After the control unit detects that an egg is placed on the placement unit based on the camera's image, it controls the power to turn on the strong light to illuminate the egg, causing the outer contour and air cell contour of the egg to be imaged on the plane mirror. Then, the camera captures the mirror image and sends it to the control unit. The control unit processes the mirror image, calculates the area ratio of the air cell contour image to the outer contour image, and compares this area ratio with the data model to determine the freshness level of the tested egg. Finally, the control unit sends the obtained freshness level result to the display unit, and the corresponding indicator light illuminates.

[0069] Step 2: Perform multiple imaging, photography, processing, and calculations on the egg sample, take the average of the area ratios from multiple measurements, and compare it with the data model to determine the freshness grade of the egg.

[0070] Result data:

[0071] After testing with the freshness testing equipment of Comparative Example 4, it was found that the tested eggs had larger air cells and increased air cell height, indicating that the eggs were not fresh.

[0072] Comparative Example 5

[0073] The freshness of eggs is detected using an egg freshness detection device as described in patent CN202021775864.8.

[0074] Step 1: Place the egg to be tested between the two rollers with its long axis parallel to the rollers. Start the motor to drive the two rollers to rotate. While the egg is rotating, turn on the image acquisition module and the light source to acquire two-dimensional images of the egg at equal intervals. After the egg has rotated once, the acquired image is the image of the egg rotating once with its long axis as the axis, which can cover all surface information of the egg.

[0075] Step 2: After acquiring a series of egg images, the microcontroller in the display module processes the acquired images. A measurement coordinate system is set in the actual 3D space where the egg is located, and an image coordinate system is set in each image. The upper left corner of each image is set as the origin. The image coordinate information of the three target image edge contour points—the egg as a whole, the yolk, and the air cell—is extracted from each image. Further, the mapping between the image coordinate system and the measurement coordinate system in the actual 3D space is derived using a formula. The column containing the major axis of the egg in the image is zh, while the major axis of the egg in the measurement coordinate system is the Z-axis. Therefore, the zh column in the image coordinate system corresponds to the Z-axis in the measurement coordinate system. The image is rotated around the Z-axis. The relationship between the same point in the target image before and after rotation is shown below:

[0076] z' = hmax - x

[0077] In the formula, (x,y) are the image coordinates before rotation, x is the difference between the column value of the image coordinates and zh, and y is 0; (x',y') are the coordinates of the measurement coordinate system after rotation; α is the rotation angle of the image, and counterclockwise is set as the positive direction; hmax is the row value of the largest detected edge of the egg in the image coordinate system; the coordinates of the three-dimensional wireframe model of the target in the measurement coordinate system are obtained based on formula (1).

[0078] Step 3: After completing the mapping derivation, calculate the volume of different yolks, air cells, and the whole egg based on the following formula (2). Cut each target along the long axis of the egg into multiple slices, and approximate each slice as a frustum. Use the frustum formula to calculate the volume of each slice, and sum the volumes of all slices to obtain the volume of the egg being measured.

[0079]

[0080] In the formula, z is the height of the slice; n is the number of layers; m is an integer, ranging from 1 to n-1; Am and Am+1 are the layer areas of the m-th and m+1-th layers, respectively.

[0081] Step 4: After completing the volume calculation, substitute the volume of the yolk, air cell and whole egg into the formula based on formula (3) to calculate the Hough value of the egg. Then, according to the inspection and freshness indicators of the egg products stipulated in the Ministry of Agriculture's egg product standards, determine the freshness of the egg and give consumption tips.

[0082] Ha=p1Ve+p2Vq+p3Va+q (3)

[0083] Where Ha is the calculated Hough value; Ve, Vq, and Va are the volumes of the yolk, air cell, and whole egg, respectively; p1, p2, and p3 are the corresponding coefficients for the volumes of the yolk, air cell, and whole egg; and q is a constant.

[0084] Step 5: After the test is completed, the results of the egg freshness test will be displayed through the display module in the shell.

[0085] Result data:

[0086] After testing with the freshness testing equipment of Comparative Example 5, the Hough value of the tested eggs was 60.12, which is Grade A and indicates that the eggs are fresh and edible.

[0087] Comparative Example 6

[0088] The freshness of eggs is detected using a fresh egg freshness detection device as described in patent CN202121072090.7.

[0089] Step 1: First, connect the power port to an external power source. Then, activate the light-emitting plate and camera via the control panel. The staff places the egg to be tested with the blunt end facing up in the fixing ring on the fixed frame. After the conveyor is started, the conveyor plate carries the egg to be tested through the detector in an orderly manner. When the signal light next to the corresponding egg is in the center of the camera, the camera detects the position of the signal light and takes a picture. The computer analyzes the height of the air cell at the blunt end of the egg in the picture. When the air cell height is less than 6mm, it is determined to be a fresh egg, and the signal light is still green. When the air cell height is more than 6mm, it is determined to be a non-fresh egg, and the signal light turns red, reminding the staff to handle the non-fresh egg. This completes the freshness detection of fresh eggs.

[0090] Result data:

[0091] After testing with the freshness testing equipment of Comparative Example 6, it was found that 3 of the tested eggs had air cell heights exceeding 6mm, indicating that they were not fresh.

[0092] Experimental Example 7:

[0093] The freshness of eggs was tested using a poultry egg freshness testing device with a refrigeration structure in Example 1, a refrigeration device and poultry egg freshness testing device in Comparative Example 4, an egg freshness testing device in Comparative Example 5, and a fresh egg freshness testing device in Comparative Example 6.

[0094] Results: Example 1's testing employed a three-step, progressive approach. The first step used weight to initially assess egg quality, reducing testing workload. The second step used light to detect egg breakage and shell adhesion, identifying obviously spoiled eggs and issuing warnings, thus avoiding unnecessary testing of clearly substandard eggs. The third step used Haugh value for further testing of suspected spoiled eggs to confirm their presence. Furthermore, the testing equipment in Example 1 could simultaneously test multiple egg samples, resulting in high efficiency and accuracy. The use of a refrigerated structure also prevented egg spoilage during testing.

[0095] After testing with the detection equipment at ratios 4 and 6, only rough information was obtained, and the reliability of the judgment results was not high.

[0096] When tested by the testing equipment at ratio 6, a large number of eggs piled up on the conveyor belt waiting to be inspected, making them prone to spoilage.

[0097] The testing equipment with a ratio of 5 can only test individual eggs, resulting in extremely low testing efficiency and a lengthy testing process. It can only perform random sampling, making it difficult to guarantee that the actual freshness meets the standards.

[0098] The results show that the freshness detection device prepared according to Example 1 of the present invention has a significantly higher detection efficiency than comparative examples 4, 5, and 6 when used to test the eggs. Furthermore, it is less prone to spoilage during the testing process, exhibits good detection results, and requires less testing time. It can detect the freshness of different breeds of poultry eggs, has a wide detection range, and facilitates diverse testing. By using multiple criteria to determine freshness, it reduces detection errors, and the method is simple and easy to operate.

[0099] The freshness detection device obtained in other embodiments of the present invention has similar beneficial effects as described above;

[0100] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A method for detecting the freshness of poultry eggs using a poultry egg freshness detection device with a refrigeration structure, characterized in that, The testing equipment includes a refrigerator and a testing module; the testing module is located inside the refrigerator. The refrigerator includes a refrigerator body (1) and a refrigerator door (2); the side wall of the refrigerator body (1) includes a groove for the installation of the testing group; The detection group includes a shelf, a light-emitting plate, and a camera (3); the light-emitting plate is located below the shelf; there are four cameras (3), located on the inner wall of the refrigerator body (1) and the inner side of the refrigerator door (2); the camera (3) is located above the shelf and parallel to the egg; the camera (3) is connected to the central processing unit. The storage board includes a storage board body (7), an egg placement slot (8), an indicator light (4), and a gravity sensor; the storage board body (7) has multiple circular openings; the gravity sensor is located inside the egg placement slot (8); the gravity sensor is connected to the input terminal of the central processing unit; there are multiple egg placement slots (8), which are arc-shaped grooves with mounting plates; the egg placement slots (8) and the storage board body (7) are made of transparent material; the indicator light (4) is installed on the storage board body (7) and located on the side of the egg placement slot (8); there are multiple storage board bodies (7); each storage board body (7) is fixedly connected to form a main storage board, which is installed in the refrigerator through the groove of the refrigerator body (1), and the main storage board can be pulled out for taking out and placing poultry eggs; the indicator light (4) is connected to the output terminal of the central processing unit; The light-emitting plate includes a light-emitting plate body (6) and a light-emitting bulb (5); the light-emitting plate body (6) includes an opening for the installation of the light-emitting bulb (5); the light-emitting bulb (5) is located directly below the egg placement slot (8); there are multiple light-emitting bulbs (5) and light-emitting plate bodies (6), and each light-emitting plate body (6) is fixedly connected to form a total light-emitting plate; The main light-emitting panel can be pulled out for easy maintenance; the light bulb (5) is connected to the output terminal of the central processing unit; The method for detecting the freshness of poultry eggs includes: Step 1: Select an egg placement trough and install it on the shelf. Place the eggs in the egg placement trough with the air cell facing upwards. Connect the device to the power supply and close the refrigerator door. Step 2: Set the gravity sensor reading to indicate that the weight is less than a preset value; Step 3: When the gravity sensor detects an egg whose weight is less than the preset value, the data is transmitted to the central processing unit. The central processing unit controls the light bulb corresponding to the abnormal egg to light up and controls the nearest camera to work. The photos recorded by the camera are transmitted to the central processing unit to determine whether there are cracks or whether the shell is stuck. Then, the height and quality of the egg are measured by the photos taken, and the Hough value is calculated using the Hough unit calculation formula. The aforementioned one placement board (7), one egg placement slot (8), one indicator light (4), and one gravity sensor constitute one poultry egg placement group; the poultry egg placement group is arranged in two rows, front and back, and consists of 1 to 20 groups; The light-emitting panel (6) and the light-emitting bulb (5) constitute a light-emitting group; there are 1 to 20 light-emitting groups. The detection group consists of 1 to 10 groups.

2. The method as described in claim 1, characterized in that, The fixed connection is achieved by welding, bonding, or integral molding.

3. The method as described in claim 1, characterized in that, The refrigerated box is a refrigerator.

4. The method as described in claim 1, characterized in that, The egg placement trough (8) comes in various sizes and is installed on the mounting slot of the placement board (7) for placing poultry eggs of different sizes.

5. The method as described in claim 1, characterized in that, The poultry egg placement groups are arranged in two rows, front and back, including 6 groups; The light-emitting groups are arranged in two rows, front and back, including 6 groups; The arc-shaped groove of the egg placement slot (8) is the size of an egg; The arc-shaped groove of the egg placement slot (8) is the size of a quail egg; The arc-shaped groove of the egg placement slot (8) is the size of an ostrich egg; The detection group consists of one group; The fixed connection is integrally formed.

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