Egg product character nondestructive testing device and method

Abstract

The invention provides an egg product character nondestructive testing device and method, and belongs to the field of agricultural product nondestructive testing, the device comprises a character detection module, a detection box, at least three detection cameras with different angles, a weighing table and a roundness detector; a plurality of rubber coating motor rollers used for driving egg products to roll around a long shaft are mounted at the end part of the bracket on the weighing platform; the roundness detection module collects the vertical displacement change value of the vibration detection rod in the rolling process of the egg product after the vibration detection rod moves to the height of the egg product along with the electric push rod and rotates to the position right above the position parallel to the long axis of the egg product along with the driving motor; and the character detection module performs three-dimensional reconstruction according to the multi-angle image to calculate the volume and the egg shape index of the egg product, calculates the density loss rate and the ellipsoid of the egg product, and determines the character of the egg product according to the density loss rate, the egg shape index and the ellipsoid of the egg product. According to the device, the volume measurement error is reduced, the freshness detection accuracy is improved, the detection process and the detection space do not need to be increased through integrated detection, and the egg character detection efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the field of nondestructive testing of agricultural products, and in particular to a device and method for nondestructive testing of egg properties. Background Art

[0002] Chicken eggs, duck eggs, and goose eggs are rich in nutrients and are very popular among consumers. The freshness of eggs is not only an important indicator of protein, but also closely related to the health of consumers. It is also an important indicator of whether the eggs can be hatched. Therefore, it is very important to accurately test the quality of eggs during the production and circulation of eggs.

[0003] At present, there is a method that calculates the density loss rate of eggs based on the initial density and current density of eggs, then imports the obtained density loss rate into the established model of density loss rate and Haff unit to calculate the Haff unit, and judges the freshness of eggs based on the Haff unit. Among them, it is necessary to use a single-chip microcomputer to control the camera module to obtain the image of the egg to be tested, obtain the long and short axis data of the egg through image processing and analysis, and calculate the initial mass and volume of the egg through the corresponding mathematical model for density calculation.

[0004] However, the above method predicts the volume of eggs through image projection analysis, which has large relative errors and low prediction accuracy and has certain limitations. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a device and method for nondestructive detection of egg properties.

[0006] The invention provides a nondestructive detection device for egg properties, comprising: a property detection module, a detection box, at least three detection cameras arranged at different angles on the top of the detection box, a weighing platform arranged at the bottom of the detection box, and a roundness detector arranged next to the weighing platform, wherein the roundness detector comprises an elastically retractable electric push rod, a driving motor, a vibration detection rod and a roundness detection module; a bracket is fixed on the weighing platform, and a plurality of rubber-coated motor rollers for driving eggs to roll around a long axis are installed at the end of the bracket; the roundness detection module is used to collect the up-and-down displacement change value of the vibration detection rod during the rolling process of the egg after the vibration detection rod moves to the egg height with the electric push rod and rotates to the top parallel to the long axis of the egg with the driving motor; the property detection module is used to calculate the egg volume and egg shape index by three-dimensional reconstruction according to the multi-angle images obtained by the detection camera, calculate the density loss rate according to the egg volume and the egg weight obtained by the weighing platform, calculate the egg ellipsoid according to the up-and-down displacement change value, and determine the egg property according to the density loss rate, the egg shape index and the egg ellipsoid.

[0007] According to a nondestructive detection device for egg properties provided by the present invention, the property detection module includes: a three-dimensional reconstruction unit, used to obtain images from each detection camera, and perform three-dimensional reconstruction based on each image to calculate the egg's major semiaxis, minor semiaxis, and a third semiaxis perpendicular to the major semiaxis and the minor semiaxis; a volume calculation unit, used to calculate the egg volume based on the major semiaxis, the minor semiaxis and the third semiaxis; an egg shape index calculation unit, used to calculate the egg shape index based on the major semiaxis and the minor semiaxis; a density calculation unit, used to calculate the current density of the egg based on the egg volume and the egg weight obtained by the weighing table, and calculate the density loss rate based on the preset density of the egg type and the current density; a roundness calculation unit, used to determine the egg ellipsoidality based on the up and down displacement change value; and a property output unit, used to determine the egg property based on the density loss rate, the egg shape index and the egg ellipsoidality.

[0008] According to a nondestructive detection device for egg properties provided by the present invention, the egg properties include egg freshness and egg hatching success prediction degree. Accordingly, the property detection module is specifically used for: when it is detected that the input egg is used for food, the density loss rate is input into a trained first detection model, the egg Haugh unit value is output, and the egg freshness is determined according to the Haugh unit value; when it is detected that the input egg is used for hatching, the density loss rate, the egg shape index and the egg ellipsoidality are input into a trained second detection model, and the egg hatching success prediction degree is output; wherein, the first detection model is obtained by training with the density loss rate as input data based on multiple egg samples with known Haugh unit values, and the second detection model is obtained by training with the density loss rate, the egg shape index and the egg ellipsoidality as input data based on multiple egg samples with known hatching ratios.

[0009] The nondestructive detection device for egg properties provided by the present invention also includes a display and a human-computer interaction device; the human-computer interaction device is used to receive input of egg usage; and the display is used to display egg properties.

[0010] According to a nondestructive detection device for egg properties provided by the present invention, the roundness calculation unit is specifically used to: determine the maximum minor semiaxis and the minimum third semiaxis according to the upper and lower displacement change values; determine the egg ellipsoidality according to the ratio of the minimum third semiaxis to the maximum minor semiaxis.

[0011] According to a nondestructive detection device for egg properties provided by the present invention, three detection cameras are respectively located directly above and on both sides of the eggs.

[0012] According to a nondestructive testing device for egg properties provided by the present invention, a support plate is provided on the upper surface of the weighing platform, a light-transmitting hole is opened in the middle of the support plate, and an LED white light for fill light is installed in the light-transmitting hole; a reflector for focusing light is fixed on the upper surface of the support plate, the reflector is sleeved on the outer side of the rubber-coated motor roller, and the upper end of the reflector is lower than half of the egg.

[0013] According to a nondestructive testing device for egg properties provided by the present invention, two groups of rubber-coated motor rollers are provided, each group of rubber-coated motor rollers are distributed in an arc shape, and the two groups of rubber-coated motor rollers are symmetrically arranged on both sides of the midline of the egg's long axis.

[0014] The present invention also provides a nondestructive detection method for egg properties, comprising: acquiring an image from each detection camera, and performing three-dimensional reconstruction according to each image to calculate the major semiaxis, the minor semiaxis, and the third semiaxis perpendicular to the major semiaxis and the minor semiaxis; calculating the egg volume according to the major semiaxis, the minor semiaxis and the third semiaxis; calculating the egg shape index according to the major semiaxis and the minor semiaxis; calculating the current density of the egg according to the egg volume and the egg weight obtained by the weighing table, and calculating the density loss rate according to the preset density of the egg type and the current density; determining the egg ellipsoidality according to the up and down displacement change value; and determining the egg properties according to the density loss rate, the egg shape index and the egg ellipsoidality.

[0015] According to a nondestructive detection method for egg properties provided by the present invention, the egg properties are determined according to the density loss rate, egg shape index and egg ellipsoidality, comprising: when it is detected that the input eggs are used for eating, the density loss rate is input into a trained first detection model, the egg Haugh unit value is output, and the egg freshness is determined according to the Haugh unit value; when it is detected that the input eggs are used for hatching, the density loss rate, the egg shape index and the egg ellipsoidality are input into a trained second detection model, and the egg hatching success prediction degree is output; wherein the first detection model is obtained by training with the density loss rate as input data based on multiple egg samples with known Haugh unit values, and the second detection model is obtained by training with the density loss rate, egg shape index and egg ellipsoidality as input data based on multiple egg samples with known hatching ratios.

[0016] The nondestructive detection device and method for egg properties provided by the present invention predicts the volume of eggs through multi-angle image analysis, reduces the measurement error of the volume, and thus improves the accuracy of freshness detection. Furthermore, combined with the egg ellipsoid measurement of the roundness detector, deformed eggs with low egg ellipsoid can be detected in time, which is beneficial for scenes such as hatching, thereby further improving the reliability of egg property measurement, and the detection process is integrated through the device, without increasing the detection process and detection space, comprehensively improving the efficiency of egg property detection and reducing the detection cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the main structure of the nondestructive testing device for egg properties according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the nondestructive testing device for egg properties according to an embodiment of the present invention; Figure 3 This is the second schematic diagram of the three-dimensional structure of the non-destructive testing device for egg properties according to an embodiment of the present invention; Figure 4 Schematic diagram of the supporting mechanism structure of an embodiment of the present invention.

[0019] Figure numerals: 1. detection box; 2. detection camera; 3. display; 4. weighing platform; 5. support plate; 6. light hole; 7. LED white light; 8. bracket; 9. rubber-coated motor roller; 10. reflector; 11. electric push rod; 12. drive motor; 13. roundness detection module; 14. vibration detection rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Combine the following Figure 1-Figure 4 The present invention describes the device and method for nondestructive detection of egg properties. Figure 1 This is a schematic diagram of the main structure of the nondestructive testing device for egg properties according to an embodiment of the present invention. Figure 2 and Figure 3 This is a schematic diagram of the three-dimensional structure of the non-destructive testing device for egg properties according to an embodiment of the present invention. Figure 4 FIG. 1 is a schematic diagram of the supporting mechanism structure of an embodiment of the present invention, Figure 1-4 As shown, the present invention provides a non-destructive detection device for egg properties, comprising: A property detection module, a detection box 1, detection cameras 2 at at least three different angles arranged on the top of the detection box 1, a weighing platform 4 arranged at the bottom of the detection box 1, and a roundness detector arranged next to the weighing platform 4, wherein the roundness detector comprises an elastically retractable electric push rod 11, a drive motor 12, a vibration detection rod 14 and a roundness detection module 13; a bracket 8 is fixed on the weighing platform 4, and a plurality of rubber-coated motor rollers 9 for driving eggs to roll around a long axis are installed at the end of the bracket 8.

[0022] The roundness detection module 13 is used to collect the up and down displacement change value of the vibration detection rod 14 during the rolling process of the egg after the vibration detection rod 14 moves to the egg height with the electric push rod 11 and rotates to the top parallel to the long axis of the egg with the drive motor 12.

[0023] The property detection module is used to perform three-dimensional reconstruction based on the multi-angle images obtained by the detection camera 2 to calculate the egg volume and egg shape index, calculate the density loss rate based on the egg volume and the egg weight obtained by the weighing platform 4, calculate the egg ellipsoidality based on the up and down displacement change value, and determine the egg properties based on the density loss rate, egg shape index and egg ellipsoidality.

[0024] Among them, a detection camera 2 for photographing eggs is installed on the upper part of the detection box 1. First, the property detection module obtains multi-angle images of the egg through the detection camera 2. After the rubber-coated motor roller 9 is powered on, it rotates with the egg. The detection camera 2 takes multi-angle photos of the rotating egg, and the captured images are marked as a1, ..., an. The three semi-axis lengths are measured based on the three-dimensional reconstruction of multiple images to obtain the average values ​​ra, rb, and rc. The major semi-axis ra is the longest semi-axis of the ellipsoid, usually referring to the radius along the longest axis; the minor semi-axis rb is the second major semi-axis of the ellipsoid, usually referring to the radius along the second major axis; the third semi-axis rc is the third semi-axis of the ellipsoid, usually referring to the radius in the direction perpendicular to the major semi-axis and the minor semi-axis.

[0025] The egg volume V is calculated by fitting an ellipsoidal shape model through three-dimensional reconstruction: V = 4πra·rb·rc / 3 The weighing platform 4 can be used as a supporting mechanism for placing eggs and is fixed to the bottom of the detection box 1. A support plate 5 is installed at the weighing end of the weighing platform, and a plurality of brackets 8 are fixed on the upper surface of the support plate. The ends of the brackets 8 are installed with rubber-coated motor rollers 9 for driving the eggs, and the plurality of rubber-coated motor rollers 9 are all in contact with the outer surface of the eggs.

[0026] Considering that although three-dimensional reconstruction can calculate a more accurate volume through three semi-axes, if it is used to determine the ellipsoidality of eggs, not only the amount of calculation is large but also there is a large calculation error, a roundness detector for egg ellipsoidality detection is also installed at the bottom of the detection box 1 of the present invention. Preferably, the roundness detector includes an electric push rod 11 fixed at the bottom of the detection box, the telescopic end of the electric push rod 11 is fixed with a drive motor 12 through a pressure sensor, the output shaft of the drive motor 12 is fixed with a roundness detection module 13, and a vibration detection rod 14 is installed on the roundness detection module, and the vibration detection rod 14 can be rotated to the top of the long axis of the egg and then contact the surface of the egg.

[0027] The electric push rod 11 is used to control the lifting and lowering of the driving motor 12, and the output shaft of the driving motor 12 is connected to the vibration detection rod 14 through the roundness detection module 13, so that the driving motor 12 can rotate with the vibration detection rod 14 to the top of the egg, and the roundness detection module 13 can detect the ellipsoidality of the rotating egg through the vibration detection rod 14. After the electric push rod 11 descends, the vibration detection rod 14 contacts the surface of the egg, and the pressure sensor cuts off the power of the electric push rod 11 after detecting the pressure change, so as to prevent the electric push rod 11 from being continuously powered on, causing the vibration detection rod 14 to squeeze the egg too much and cause damage.

[0028] During the detection process, the rubber-coated motor roller 9 continues to rotate with the egg. At this time, the output shaft of the drive motor 12 is controlled to rotate, so that the vibration detection rod 14 installed on the roundness detection module moves to the top of the center axis of the egg. The telescopic end of the electric push rod 11 moves downward with the drive motor, and makes the vibration detection rod contact with the egg. When the pressure of the pressure sensor at the telescopic end of the electric push rod changes, the electric push rod is powered off, and the roundness detection module obtains the up and down displacement change value of the vibration detection rod, sends it to the roundness calculation unit, and calculates the value Q of the egg ellipsoidality.

[0029] The eggs are weighed by the weighing platform 4 to obtain the egg mass M, and the current density of the egg product ρ=M / V is further calculated. Then, the initial density ρ0 (i.e., the preset density) and the current density of the egg product ρ are set according to the egg type, and the density loss rate of the egg is calculated to be ρ1. The initial density can be predetermined according to different egg types.

[0030] The property detection module can be set locally or in the cloud. The property detection module receives the multi-angle image data sent by the detection camera 2 to perform three-dimensional reconstruction to calculate the egg volume, and then calculates the density loss rate based on the egg weight data sent by the weighing platform, and receives the up and down displacement change value data sent by the roundness detection module 13 to calculate the egg ellipsoidality.

[0031] The egg ellipsoidality is an important factor affecting the hatching success rate of eggs. The closer the egg is to a perfect ellipsoid, the higher the hatching rate. On the contrary, the lower the egg ellipsoidality and the more deformed the egg, the lower the hatching rate. The device of the present invention can collect egg ellipsoidality information during the three-dimensional reconstruction process, thereby simplifying the egg detection process.

[0032] Finally, the trait output unit of the trait detection module detects egg traits based on the density egg shape index, density loss rate and egg ellipsoidality.

[0033] The nondestructive detection device for egg properties of the present invention predicts the volume of eggs through multi-angle image analysis, reduces the measurement error of the volume, and thus improves the accuracy of freshness detection. Furthermore, combined with the egg ellipsoid measurement of the roundness detector, deformed eggs with low egg ellipsoid can be detected in time, which is beneficial for scenes such as hatching, thereby further improving the reliability of egg property measurement, and the detection process is integrated through the device, without increasing the detection process and detection space, comprehensively improving the efficiency of egg property detection and reducing the detection cost.

[0034] In some embodiments, the trait detection module includes: a three-dimensional reconstruction unit, used to acquire the image of each detection camera, and perform three-dimensional reconstruction based on each image to calculate the major semiaxis, the minor semiaxis, and the third semiaxis perpendicular to the major semiaxis and the minor semiaxis of the egg; a volume calculation unit, used to calculate the egg volume based on the major semiaxis, the minor semiaxis and the third semiaxis; an egg shape index calculation unit, used to calculate the egg shape index based on the major semiaxis and the minor semiaxis; a density calculation unit, used to calculate the current density of the egg based on the egg volume and the egg weight obtained by the weighing table, and calculate the density loss rate based on the preset density of the egg type and the current density; a roundness calculation unit, used to determine the egg ellipsoidality based on the up and down displacement change value; a trait output unit, used to determine the egg trait based on the density loss rate, the egg shape index and the egg ellipsoidality.

[0035] In some embodiments, the egg traits include egg freshness and egg hatching success prediction. Accordingly, the trait detection module is specifically used to: when it is detected that the input eggs are used for food, the density loss rate is input into the trained first detection model, the egg Haugh unit value is output, and the egg freshness is determined according to the Haugh unit value; when it is detected that the input eggs are used for hatching, the density loss rate, the egg shape index and the egg ellipsoidality are input into the trained second detection model, and the egg hatching success prediction is output; wherein, the first detection model is obtained after training with the density loss rate as input data based on multiple egg samples with known Haugh unit values, and the second detection model is obtained after training with the density loss rate, the egg shape index and the egg ellipsoidality as input data based on multiple egg samples with known hatching ratios.

[0036] In an embodiment of the present invention, the corresponding egg properties are determined according to different uses such as eating and hatching, and the use can be input by the user through the human-computer interface. For example, the options are displayed through the touch screen and the user selects, and the following menu is provided: "Please enter the use, A: food; B breeding eggs". When the use is for eating, the freshness of the egg is judged, and the obtained density loss rate ρ1 is imported into the established first detection model of the density loss rate ρ1 and the Haugh unit HU to calculate the Haugh unit, and the freshness of the egg is judged according to the Haugh unit. When the purpose of the egg is hatching, the second detection model comprehensively considers factors such as the density loss rate, the egg shape index and the egg ellipsoidality, so as to improve the hatching efficiency and reduce the hatching cost. Among them, the first and second detection models can be established and learned and trained respectively by the current method, such as using a linear regression model and a machine learning model.

[0037] In some embodiments, the device further comprises a display 3 and a human-computer interaction device; the human-computer interaction device is used to receive input of egg usage; and the display 3 is used to display egg properties.

[0038] The human-machine interaction device can be a button or a touch screen, and when a touch screen is used, it also serves as a display 3. The user can input the purpose of the egg, such as eating or hatching, through the human-machine interaction device. The display 3 can be installed on the upper end of the detection box 1, and the display 3 can realize wireless transmission with the host computer through the built-in Bluetooth communication module.

[0039] In some embodiments, the roundness calculation unit is specifically used to: determine the maximum minor semi-axis and the minimum third semi-axis according to the up-down displacement change value; determine the egg ellipsoid according to the ratio of the minimum third semi-axis to the maximum minor semi-axis. That is, the value of the egg ellipsoid Q = minimum third semi-axis rc / maximum minor semi-axis rb×100%. Among them, the position of the egg center can be pre-calibrated, and then the up-down displacement change value of the egg rolling process can be detected in combination with the roundness detection module, so that the maximum minor semi-axis and the minimum third semi-axis can be calculated.

[0040] In some embodiments, three detection cameras 2 are respectively located above and on both sides of the eggs, so that images can be collected from multiple angles and the surface information of the eggs can be captured in all directions, thereby improving the accuracy of calculating the egg volume after three-dimensional reconstruction.

[0041] In some embodiments, a support plate 5 is provided on the upper surface of the weighing platform 4, a light-transmitting hole 6 is opened in the middle of the support plate 5, and an LED white light lamp 7 for fill light is installed in the light-transmitting hole 6; a reflector 10 for focusing light is fixed on the upper surface of the support plate 5, and the reflector 10 is sleeved on the outside of the rubber-coated motor roller 9, and the upper end of the reflector 10 is lower than half of the egg.

[0042] See also Figure 4Among them, an LED white light lamp is installed in the light-transmitting hole, and the exposure emitted by the LED white light lamp is used to illuminate the eggs. When the white light illuminates the eggs, the color and external size of the eggs can be fully displayed, which is conducive to the comprehensive detection of egg color, egg shape index, freshness and egg ellipsoidality.

[0043] In some embodiments, the rubber-coated motor rollers 9 are provided with two groups, each group of rubber-coated motor rollers 9 is distributed in an arc shape, and the two groups of rubber-coated motor rollers 9 are symmetrically arranged on both sides of the midline of the egg's long axis. The two groups of arc-shaped rubber-coated motor rollers 9 are symmetrically arranged on both sides of the midline of the egg's long axis, so as to effectively support the egg during the rolling process.

[0044] The nondestructive detection method for egg properties provided by the present invention is described below. The nondestructive detection method for egg properties described below and the nondestructive detection device for egg properties described above can be referenced to each other.

[0045] The present invention provides a method for nondestructive detection of egg properties based on any one of the above-mentioned nondestructive detection devices for egg properties, comprising: S1, acquiring an image from each detection camera, and performing three-dimensional reconstruction based on each image to calculate the major semi-axis, the minor semi-axis, and the third semi-axis perpendicular to both the major semi-axis and the minor semi-axis of the egg; S2, calculating the volume of the egg according to the major semi-axis, the minor semi-axis and the third semi-axis; S3, calculating the egg-shaped index according to the major semi-axis and the minor semi-axis; S4, calculating the current density of the eggs according to the egg volume and the egg weight obtained by the weighing platform, and calculating the density loss rate according to the preset density of the egg type and the current density; S5, determining the egg ellipsoidality according to the up and down displacement change value; S6. Determine egg properties according to the density loss rate, egg shape index and egg ellipsoidality.

[0046] In some embodiments, determining the egg traits according to the density loss rate, egg shape index and egg ellipsoidality comprises: When it is detected that the input egg product is used for food, the density loss rate is input into the trained first detection model, the Haugh unit value of the egg product is output, and the freshness of the egg product is determined according to the Haugh unit value; When it is detected that the purpose of the input eggs is hatching, the density loss rate, the egg shape index and the egg ellipsoidality are input into the trained second detection model, and the hatching success prediction degree of the eggs is output; Among them, the first detection model is obtained after training based on multiple egg samples with known Haugh unit values, using density loss rate as input data, and the second detection model is obtained after training based on multiple egg samples with known hatching ratios, using density loss rate, egg shape index and egg ellipsoidality as input data.

[0047] The method embodiments provided in the embodiments of the present invention are implemented through the above-mentioned device embodiments. For specific processes and detailed contents, please refer to the above-mentioned device embodiments, which will not be repeated here.

[0048] The implementation principle and technical effects of the nondestructive detection method for egg properties provided in the embodiment of the present invention are the same as those of the aforementioned embodiment of the nondestructive detection device for egg properties. For the sake of brief description, for matters not mentioned in the embodiment of the nondestructive detection method for egg properties, reference may be made to the corresponding contents in the aforementioned embodiment of the nondestructive detection device for egg properties.

[0049] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0050] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-destructive testing device for egg properties, characterized in that: include: A property detection module, a detection box, detection cameras arranged at at least three different angles on the top of the detection box, a weighing platform arranged at the bottom of the detection box, and a roundness detector arranged next to the weighing platform, wherein the roundness detector comprises an elastically retractable electric push rod, a drive motor, a vibration detection rod and a roundness detection module; A bracket is fixed on the weighing platform, and a plurality of rubber-coated motor rollers for driving the eggs to roll around the long axis are installed at the end of the bracket; The roundness detection module is used to collect the up and down displacement change value of the vibration detection rod during the rolling process of the egg after the vibration detection rod moves to the egg height with the electric push rod and rotates to the top parallel to the long axis of the egg with the drive motor; The property detection module is used to perform three-dimensional reconstruction to calculate the egg volume and egg shape index based on the multi-angle images obtained by the detection camera, calculate the density loss rate based on the egg volume and the egg weight obtained by the weighing platform, calculate the egg ellipsoidality based on the up and down displacement change value, and determine the egg property based on the density loss rate, egg shape index and egg ellipsoidality.

2. The nondestructive testing device for egg properties according to claim 1, characterized in that: The trait detection module comprises: A three-dimensional reconstruction unit is used to obtain an image from each detection camera, and perform three-dimensional reconstruction based on each image to calculate the major semi-axis, the minor semi-axis, and the third semi-axis perpendicular to both the major semi-axis and the minor semi-axis of the egg; A volume calculation unit, used for calculating the volume of the egg according to the major semi-axis, the minor semi-axis and the third semi-axis; an egg-shaped index calculation unit, used for calculating the egg-shaped index according to the major semi-axis and the minor semi-axis; A density calculation unit, used to calculate the current density of the egg according to the volume of the egg and the weight of the egg obtained by the weighing platform, and to calculate the density loss rate according to the preset density of the egg type and the current density; A roundness calculation unit, used to determine the egg ellipsoidality according to the up and down displacement change value; The trait output unit is used to determine the egg trait according to the density loss rate, egg shape index and egg ellipsoidality.

3. The nondestructive testing device for egg properties according to claim 1 or 2, characterized in that: The egg properties include egg freshness and egg hatching success prediction. Accordingly, the property detection module is specifically used for: When it is detected that the input egg product is used for food, the density loss rate is input into the trained first detection model, the Haugh unit value of the egg product is output, and the freshness of the egg product is determined according to the Haugh unit value; When it is detected that the purpose of the input eggs is hatching, the density loss rate, the egg shape index and the egg ellipsoidality are input into the trained second detection model, and the hatching success prediction degree of the eggs is output; Among them, the first detection model is obtained after training based on multiple egg samples with known Haugh unit values, using density loss rate as input data, and the second detection model is obtained after training based on multiple egg samples with known hatching ratios, using density loss rate, egg shape index and egg ellipsoidality as input data.

4. The nondestructive testing device for egg properties according to claim 3, characterized in that: It also includes a display, and a human-computer interaction device; The human-computer interaction device is used to receive input of egg usage; The display is used to display egg properties.

5. The nondestructive testing device for egg properties according to claim 2, characterized in that: The roundness calculation unit is specifically used for: Determine the maximum minor semi-axis and the minimum third semi-axis according to the up and down displacement change values; The egg ellipsoidality is determined according to the ratio of the smallest third semi-axis to the largest minor semi-axis.

6. The nondestructive testing device for egg properties according to claim 1, characterized in that: Three detection cameras are located directly above and on both sides of the eggs.

7. The nondestructive testing device for egg properties according to claim 1, characterized in that: A support plate is provided on the upper surface of the weighing platform, a light-transmitting hole is provided in the middle of the support plate, and an LED white light for supplementary lighting is installed in the light-transmitting hole; A reflector for focusing light is fixed on the upper surface of the support plate, and the reflector is sleeved on the outer side of the rubber-coated motor roller, and the upper end of the reflector is lower than half of the egg.

8. The nondestructive testing device for egg properties according to claim 1, characterized in that: The rubber-coated motor rollers are provided in two groups, each group of rubber-coated motor rollers is distributed in an arc shape, and the two groups of rubber-coated motor rollers are symmetrically arranged on both sides of the midline of the egg's long axis.

9. A method for nondestructive testing of egg properties based on the nondestructive testing device for egg properties according to any one of claims 1 to 8, characterized in that: include: Acquire an image from each detection camera, and perform three-dimensional reconstruction based on each image to calculate the major semi-axis, the minor semi-axis, and the third semi-axis perpendicular to both the major semi-axis and the minor semi-axis of the egg; Calculate the volume of the egg according to the major semi-axis, the minor semi-axis and the third semi-axis; Calculating an egg-shaped index based on the major semi-axis and the minor semi-axis; Calculate the current density of the eggs according to the volume of the eggs and the weight of the eggs obtained by the weighing table, and calculate the density loss rate according to the preset density of the egg type and the current density; Determine the egg ellipsoidality based on the up and down displacement change value; The egg traits are determined based on the density loss rate, egg shape index and egg ellipsoidality.

10. The method for nondestructive detection of egg properties according to claim 9, characterized in that: Determining egg properties according to the density loss rate, egg shape index and egg ellipsoidality comprises: When it is detected that the input egg product is used for food, the density loss rate is input into the trained first detection model, the Haugh unit value of the egg product is output, and the freshness of the egg product is determined according to the Haugh unit value; When it is detected that the purpose of the input eggs is hatching, the density loss rate, the egg shape index and the egg ellipsoidality are input into the trained second detection model, and the hatching success prediction degree of the eggs is output; Among them, the first detection model is obtained after training based on multiple egg samples with known Haugh unit values, using density loss rate as input data, and the second detection model is obtained after training based on multiple egg samples with known hatching ratios, using density loss rate, egg shape index and egg ellipsoidality as input data.

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