Egg quality nondestructive automatic detection equipment and use method thereof

Abstract

The invention belongs to the technical field of poultry egg optical detection, and particularly relates to poultry egg quality nondestructive automatic detection equipment and a use method thereof.The poultry egg quality nondestructive automatic detection equipment comprises a base, a conveyor is fixedly installed at the upper end of the base, and a plurality of egg brackets are fixedly installed on the conveyor at equal intervals; the device further comprises an egg righting mechanism, a vertical light source mechanism, a light signal receiving mechanism, an egg position sensing feedback mechanism, a light source irradiation intensity self-regulation mechanism and a light source irradiation distance self-regulation mechanism. According to the poultry egg centralizer, poultry eggs of various specifications can be centralized to be in correct positions and postures suitable for optical detection, the sizes of the poultry eggs are synchronously detected and fed back in the poultry egg centralizing process, and the light source irradiation intensity and the light source irradiation distance are synchronously regulated and controlled based on the sizes of the poultry eggs and the color depth of the poultry eggs; the light transmission quality and the optical detection accuracy of the poultry eggs are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of optical detection of poultry eggs, and in particular relates to a non-destructive automatic detection device for poultry egg quality and a use method thereof. Background Art

[0002] The non-destructive automatic detection equipment for poultry egg quality plays an important role and significance in ensuring the quality of poultry eggs, improving industrial efficiency, and promoting industry development. In the random inspection of poultry egg production, or in the scene of a small number of precise egg inspections, the equipment can accurately detect multiple quality indicators of poultry eggs. For example, it can accurately detect egg weight, eggshell thickness, egg white height, yolk color, Haugh value, etc. It can also detect internal blood, loose yolk, and cracks in the eggshell, providing comprehensive and accurate information on the quality of poultry eggs.

[0003] The detection principle is based on the absorption, scattering and transmission characteristics of light by poultry eggs. The internal and external information of the eggs is obtained by analyzing the light signals. For example, the patent with patent announcement number CN110456101A proposes a method for non-destructive and rapid monitoring of the freshness of eggs.

[0004] When performing non-destructive testing on poultry eggs, since the size and color of poultry eggs are different, for larger eggs, a stronger light source intensity is required to ensure that the light can fully penetrate so that the CCD camera can clearly capture the internal structure information; at the same time, the distance between the light source and the egg needs to be appropriately increased to ensure that the entire egg body can be evenly irradiated. For smaller eggs, the light source intensity can be appropriately reduced and the distance can be shortened accordingly to avoid problems such as too strong light causing the image to be too bright or reflections to affect the detection. For dark-colored eggs, such as dark brown poultry eggs, they have a strong ability to absorb light and poor light transmittance. The light source intensity needs to be increased so that the internal structure information can be better captured by the CCD camera through the eggshell; while light-colored eggs, such as white poultry eggs, absorb less light and have better light transmittance. Excessive light source intensity may cause the image to be too bright and details to be lost. At this time, the light source intensity needs to be reduced. At present, most of the fixed light source intensity and light source emission distance are used for poultry egg quality detection, which is easy to affect the detection quality due to the size and color of the poultry eggs. Summary of the invention

[0005] The object of the present invention is to provide a non-destructive automatic detection device for egg quality and a method for using the same in order to solve the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: an automatic non-destructive egg quality detection device, comprising a base, a conveyor is fixedly installed on the upper end of the base, a plurality of egg trays are fixedly installed on the conveyor at equal intervals, and further comprising: An egg straightening mechanism is fixedly mounted on the upper end of the base and arranged on one side of the conveyor; A vertical light source mechanism is fixedly mounted on the upper end of the base and arranged on one side of the conveyor; An optical signal receiving mechanism is fixedly mounted on the lower side of the moving end of the vertical light source mechanism; An egg position sensing feedback mechanism is installed on the output end of the vertical light source mechanism; The light source illumination intensity self-regulating mechanism is fixedly mounted on the vertical light source mechanism and is electrically connected to the PLC controller. The PLC controller performs feedback control on the adjustment degree of the light source illumination intensity self-regulating mechanism based on the egg size information fed back by the egg straightening mechanism and the egg color depth information fed back by the light signal receiving mechanism. The light source irradiation distance self-regulating mechanism is installed on the light source irradiation intensity self-regulating mechanism and is electrically connected to the PLC controller. The PLC controller controls the action of the light source irradiation distance self-regulating mechanism based on the egg size information fed back by the egg straightening mechanism.

[0007] In the above-mentioned non-destructive automatic detection equipment for poultry egg quality, the poultry egg straightening mechanism includes an electric push rod fixedly mounted on the upper end of the base, the upper movable end of the electric push rod is fixedly connected to a rotating motor, the upper output end of the rotating motor is fixedly connected to a cross plate, one end of the cross plate is fixedly connected to a straightening cylinder, the inner wall of the straightening cylinder is fixedly connected to an inflatable airbag, the surface of the inflatable airbag is coated with a layer of polytetrafluoroethylene coating, the outer wall of the straightening cylinder is fixedly mounted with an air supply pump, the air outlet of the air supply pump is connected to the inflatable airbag, an air pressure sensor is also embedded in the straightening cylinder, and a counterweight is fixedly mounted on the end of the cross plate away from the straightening cylinder.

[0008] In the above-mentioned non-destructive automatic detection equipment for poultry egg quality, the vertical light source mechanism includes a U-shaped support plate fixedly mounted on the upper end of the base, a rotating screw is rotatably connected between the U-shaped support plate and the base, a forward and reverse motor for driving the rotating screw to rotate is fixedly mounted on the upper end of the U-shaped support plate, a lifting plate is threadedly sleeved on the rod wall of the rotating screw, and an irradiation light source is fixedly inserted on the lifting plate.

[0009] In the above-mentioned non-destructive automatic detection equipment for poultry egg quality, the optical signal receiving mechanism includes a circular electric slide rail fixedly installed at the lower end of the lifting plate, the lower end of the slider in the circular electric slide rail is fixedly connected to a fixed column, and the lower end of the fixed column is fixedly connected to a CCD camera.

[0010] In the above-mentioned non-destructive automatic detection equipment for poultry egg quality, the poultry egg position sensing feedback mechanism includes an L-shaped positioning plate fixedly mounted on the outer wall of the illumination light source, a transmission shaft is rotatably connected between the L-shaped positioning plate and the illumination light source, a deflection motor for driving the transmission shaft to rotate is fixedly mounted on the outer wall of the L-shaped positioning plate, an extension rod is fixedly sleeved on the shaft wall of the transmission shaft, and a pressure sensing plate is fixedly connected to the lower end of the extension rod.

[0011] In the above-mentioned non-destructive automatic detection equipment for poultry egg quality, the self-regulating mechanism of the light source illumination intensity includes a regulating shell fixedly installed on the upper end of the lifting plate, and the upper end of the lifting plate is also fixedly installed with a U-shaped fixing plate arranged on the outside of the regulating shell, and a potentiometer is fixedly installed on the inner top of the U-shaped fixing plate, and a reduction gear box is also fixedly installed on the inner side of the U-shaped fixing plate, and the output end of the reduction gear box is fixedly connected to the center point of the rotation input end of the potentiometer, and a synchronous screw is rotatably connected to the upper side of the inner wall of the regulating shell, and a synchronous motor for driving the synchronous screw to rotate is fixedly installed on the outer wall of the regulating shell, and a synchronous seat is threadedly sleeved on the rod wall of the synchronous screw, and the upper end of the synchronous seat passes through the upper end of the regulating shell through a strip opening opened at the upper end of the regulating shell, and is fixedly connected with an electric telescopic rod, and the movable end of the electric telescopic rod is fixedly connected with a transmission rack, and the lower input end of the reduction gear box is fixedly connected with a transmission gear meshing with the transmission rack.

[0012] In the above-mentioned non-destructive automatic detection equipment for poultry egg quality, the light source irradiation distance self-regulating mechanism includes a driving screw rotatably connected to the inner wall of the regulating shell and arranged parallel to the synchronous screw. The outer wall of the regulating shell is fixedly provided with a driving motor for driving the driving screw to rotate. The rod wall of the driving screw is threadedly sleeved with a moving seat, and the side wall of the moving seat is fixedly provided with an in-position switch arranged opposite to the synchronous seat.

[0013] A method for using a non-destructive automatic detection device for egg quality comprises the following steps: S1. Through the egg straightening mechanism, conveyor, and egg tray, the eggs to be inspected can be quickly transferred to the optical inspection station, and eggs of various specifications can be straightened; S2. Through the egg straightening mechanism, the vertical light source mechanism, the light signal receiving mechanism, and the light source illumination intensity self-regulating mechanism, the eggs are illuminated with strong light, and the internal quality of the eggs is judged according to the difference in the light transmittance color and shadow inside the eggs. Problems such as cracks, stains, loose yellow and deterioration can be detected. When the eggs are straightened, the size of the eggs can be synchronously fed back, and the illumination intensity of the light source can be automatically adjusted based on the size of the eggs; S3. Using the light signal receiving mechanism to determine the depth of the egg color, and automatically adjust the intensity of the light source based on the depth of the egg color. The darker the egg color, the greater the intensity of the light source, ensuring the penetration of the detection light, thereby ensuring the quality of optical detection of egg quality; S4. Automatically adjust the irradiation distance of the light source based on the size of the eggs. The larger the egg size, the greater the irradiation distance of the light source, ensuring that the entire egg can be evenly irradiated.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the egg straightening mechanism, conveyor and egg tray, the eggs to be inspected can be quickly transferred to the optical inspection station, and eggs of various specifications can be straightened to put them in the correct position and posture suitable for optical inspection, ensuring the optical inspection quality of the eggs.

[0015] 2. Through the egg straightening mechanism, vertical light source mechanism, optical signal receiving mechanism and light source irradiation intensity self-regulating mechanism, the eggs are irradiated with strong light, and the internal quality is judged according to the difference of light transmittance color and shadow inside the eggs. Problems such as cracks, stains, loose yellowing and deterioration can be detected. When the eggs are straightened, the size of the eggs can be synchronously fed back, and the irradiation intensity of the light source can be automatically adjusted based on the size of the eggs. The larger the size of the eggs, the greater the irradiation intensity of the light source. The image of the eggs can be directly obtained by using the optical signal receiving mechanism, and the image can be analyzed by using image processing software. The depth of the color of the eggs can be judged by calculating the gray value or color value of the pixels in the image, and the irradiation intensity of the light source can be automatically adjusted based on the depth of the color of the eggs. The darker the color of the eggs, the greater the irradiation intensity of the light source, thereby ensuring the penetration of the detection light and thus ensuring the optical detection quality of the egg quality.

[0016] 3. Through the egg straightening mechanism, egg position sensing feedback mechanism and light source irradiation distance self-regulating mechanism, the irradiation distance of the light source can be automatically adjusted based on the size of the eggs. The larger the egg size, the greater the irradiation distance of the light source, ensuring that the entire egg can be evenly irradiated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a non-destructive automatic detection device for egg quality provided by the present invention; Figure 2 It is a front view cross-sectional structural schematic diagram of a non-destructive automatic detection device for egg quality provided by the present invention; Figure 3 It is a three-dimensional structural schematic diagram of a poultry egg straightening mechanism of a poultry egg quality non-destructive automatic detection device provided by the present invention; Figure 4 yes Figure 3 A schematic diagram of the three-dimensional cross-sectional structure of the middle centralizing cylinder; Figure 5 It is a three-dimensional structural schematic diagram of a vertical light source mechanism of a non-destructive automatic detection device for egg quality provided by the present invention; Figure 6 It is a three-dimensional structural schematic diagram of an optical signal receiving mechanism of a non-destructive automatic detection device for egg quality provided by the present invention; Figure 7 It is a three-dimensional structural schematic diagram of an egg position sensing feedback mechanism of an egg quality non-destructive automatic detection device provided by the present invention; Figure 8 The present invention provides a schematic diagram of the formal cross-sectional structure of a light source irradiation intensity self-regulating mechanism and a light source irradiation distance self-regulating mechanism of a non-destructive automatic detection device for egg quality provided by the present invention.

[0018] In the figure: 1 base, 2 poultry egg straightening mechanism, 21 electric push rod, 22 rotating motor, 23 horizontal plate, 24 straightening cylinder, 25 inflatable airbag, 26 air supply pump, 27 air pressure sensor, 28 counterweight, 3 vertical light source mechanism, 31 U-shaped support plate, 32 rotating screw, 33 forward and reverse motor, 34 lifting plate, 35 irradiation light source, 4 light signal receiving mechanism, 41 circular electric slide rail, 42 fixed column, 43 CCD camera, 5 poultry egg position sensing feedback mechanism, 51 L-shaped positioning plate , 52 transmission shaft, 53 deflection motor, 54 extension rod, 55 pressure sensing plate, 6 light source irradiation intensity self-regulating mechanism, 61 regulating shell, 62 U-shaped fixing plate, 63 potentiometer, 64 reduction gear box, 65 synchronous screw, 66 synchronous motor, 67 synchronous seat, 68 electric telescopic rod, 69 transmission rack, 610 transmission gear, 7 light source irradiation distance self-regulating mechanism, 71 driving screw, 72 driving motor, 73 moving seat, 74 in-place switch, 8 conveyor, 9 egg tray. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1-Figure 8 As shown, a non-destructive automatic detection device for egg quality comprises a base 1, a conveyor 8 is fixedly mounted on the upper end of the base 1, a plurality of egg trays 9 are fixedly mounted on the conveyor 8 at equal intervals, and further comprises: The egg straightening mechanism 2 is fixedly mounted on the upper end of the base 1 and is arranged on one side of the conveyor 8. The egg straightening mechanism 2 includes an electric push rod 21 fixedly mounted on the upper end of the base 1. The upper movable end of the electric push rod 21 is fixedly connected to a rotating motor 22. The upper output end of the rotating motor 22 is fixedly connected to a transverse plate 23. One end of the transverse plate 23 is fixedly connected to a straightening cylinder 24. The inner wall of the straightening cylinder 24 is fixedly connected to an inflatable airbag 25. The surface of the inflatable airbag 25 is coated with a layer of polytetrafluoroethylene coating. An air supply pump 26 is fixedly mounted on the outer wall of the straightening cylinder 24. The air outlet of the air supply pump 26 is connected to the inflatable airbag 25. An air pressure sensor 27 is also embedded in the straightening cylinder 24. A counterweight block 28 is fixedly mounted on the end of the transverse plate 23 away from the straightening cylinder 24.

[0021] The vertical light source mechanism 3 is fixedly mounted on the upper end of the base 1 and is arranged on one side of the conveyor 8. The vertical light source mechanism 3 includes a U-shaped support plate 31 fixedly mounted on the upper end of the base 1. A rotating screw 32 is rotatably connected between the U-shaped support plate 31 and the base 1. A forward and reverse motor 33 for driving the rotating screw 32 to rotate is fixedly mounted on the upper end of the U-shaped support plate 31. A lifting plate 34 is threadedly sleeved on the rod wall of the rotating screw 32, and an irradiation light source 35 is fixedly inserted on the lifting plate 34.

[0022] The optical signal receiving mechanism 4 is fixedly installed on the lower side of the moving end of the vertical light source mechanism 3. The optical signal receiving mechanism 4 includes a circular electric slide rail 41 fixedly installed on the lower end of the lifting plate 34. The lower end of the slider in the circular electric slide rail 41 is fixedly connected to a fixed column 42, and the lower end of the fixed column 42 is fixedly connected to a CCD camera 43.

[0023] The egg position sensing feedback mechanism 5 is installed on the output end of the vertical light source mechanism 3. The egg position sensing feedback mechanism 5 includes an L-shaped positioning plate 51 fixedly installed on the outer wall of the irradiation light source 35. A transmission shaft 52 is rotatably connected between the L-shaped positioning plate 51 and the irradiation light source 35. A deflection motor 53 for driving the transmission shaft 52 to rotate is fixedly installed on the outer wall of the L-shaped positioning plate 51. An extension rod 54 is fixedly sleeved on the shaft wall of the transmission shaft 52, and a pressure sensing plate 55 is fixedly connected to the lower end of the extension rod 54.

[0024] The light source illumination intensity self-regulating mechanism 6 is fixedly mounted on the vertical light source mechanism 3 and electrically connected to the PLC controller. The PLC controller performs feedback control on the adjustment degree of the light source illumination intensity self-regulating mechanism 6 based on the egg size information fed back by the egg straightening mechanism 2 and the egg color depth information fed back by the light signal receiving mechanism 4. The light source illumination intensity self-regulating mechanism 6 includes a regulating shell 61 fixedly mounted on the upper end of the lifting plate 34. A U-shaped fixing plate 62 arranged on the outer side of the regulating shell 61 is also fixedly mounted on the upper end of the lifting plate 34. A potentiometer 63 is fixedly mounted on the inner top of the U-shaped fixing plate 62. A reduction gear is also fixedly mounted on the inner side of the U-shaped fixing plate 62. The output end of the reduction gear box 64 is fixedly connected to the center point of the rotation input end of the potentiometer 63, and the upper side of the inner wall of the regulating shell 61 is rotatably connected with a synchronous screw 65. The outer wall of the regulating shell 61 is fixedly provided with a synchronous motor 66 for driving the synchronous screw 65 to rotate. The rod wall of the synchronous screw 65 is threadedly sleeved with a synchronous seat 67. The upper end of the synchronous seat 67 passes through the upper end of the regulating shell 61 through a strip opening opened at the upper end of the regulating shell 61, and is fixedly connected with an electric telescopic rod 68. The moving end of the electric telescopic rod 68 is fixedly connected with a transmission rack 69. The lower input end of the reduction gear box 64 is fixedly connected with a transmission gear 610 meshing with the transmission rack 69.

[0025] The light source irradiation distance self-regulating mechanism 7 is installed on the light source irradiation intensity self-regulating mechanism 6 and is electrically connected to the PLC controller. The PLC controller controls the action of the light source irradiation distance self-regulating mechanism 7 based on the egg size information fed back by the egg straightening mechanism 2. The light source irradiation distance self-regulating mechanism 7 includes a driving screw 71 rotatably connected to the inner wall of the regulating shell 61 and arranged parallel to the synchronous screw 65. A driving motor 72 for driving the driving screw 71 to rotate is fixedly installed on the outer wall of the regulating shell 61. A moving seat 73 is threadedly sleeved on the rod wall of the driving screw 71. The side wall of the moving seat 73 is fixedly provided with an in-position switch 74 arranged opposite to the synchronous seat 67.

[0026] The operating principle of the present invention is described as follows: a plurality of poultry eggs to be inspected are placed on an egg tray 9 on a conveyor 8, and the conveyor 8 transfers the poultry eggs to an optical inspection station. Since the spacing between the plurality of egg trays 9 is fixed, the conveyor 8 can accurately transfer each poultry egg to the optical inspection station by moving a fixed distance each time. First, the PLC controller controls the rotating motor 22 to drive the horizontal plate 23 to rotate 180 degrees, so that the straightening cylinder 24 moves to a position above the poultry eggs, and then drives the straightening cylinder 24 downward through the electric push rod 21, so that the straightening cylinder 24 is sleeved on the outside of the poultry eggs. The PLC controller then controls the air supply pump 26 to work, and the air supply pump 26 supplies air to the inflatable airbag 25, and the inflatable airbag 25 expands. , using the elasticity and deformability of the inflatable airbag 25, applying force to the eggs from different directions can effectively straighten the eggs and put them in the correct position and posture suitable for optical detection. The surface of the inflatable airbag 25 is coated with a layer of polytetrafluoroethylene coating. Polytetrafluoroethylene is famous for its extremely low friction coefficient and has excellent non-stickiness and self-lubricating properties. Its surface is very smooth, which enables the eggs to slide and adjust their positions almost unhindered when contacting the inflatable airbag 25, effectively reducing the influence of friction on the straightening work, until the air pressure sensor 27 detects that the air pressure value in the inflatable airbag 25 reaches a preset threshold, and then feeds back a signal to the PLC controller, and the PLC controller controls the air supply pump 26 to stop working; When the air supply pump 26 is working, the PLC controller controls the synchronous motor 66 to work synchronously, and the synchronous motor 66 drives the synchronous screw 65 to rotate. The threaded sleeve connection between the synchronous screw 65 and the synchronous seat 67 enables the synchronous seat 67 to drive the electric telescopic rod 68 and the transmission rack 69 to move synchronously, and then the meshing action of the transmission rack 69 and the transmission gear 610 cooperates with the reduction gear box 64 to drive the rotating end of the potentiometer 63 to rotate. The potentiometer 63 is connected in series to the power supply circuit of the irradiation light source 35. After the rotating end of the potentiometer 63 rotates, the access resistance of the potentiometer 63 is adjusted, thereby changing the power supply current of the irradiation light source 35, and then automatically regulating the luminous intensity of the irradiation light source 35. Specifically, when the size of the poultry eggs is larger, the space required for the inflatable airbag 25 to deform and completely wrap the poultry eggs is smaller, and then the air supply pump 26 will make the air pressure sensor 27 reach the preset threshold within a shorter working time. value, and after the air pressure sensor 27 reaches the preset threshold value, the PLC controller synchronously controls the synchronous motor 66 to stop the action, thereby making the moving distance of the transmission rack 69 shorter, thereby making the rotation angle of the rotating end of the potentiometer 63 smaller, making the access resistance of the potentiometer 63 increase less, making the original power supply current of the irradiation light source 35 relatively larger, making the intensity of the subsequent luminescence of the irradiation light source 35 greater, and realizing that the larger the size of the poultry egg, the greater the luminous intensity of the irradiation light source 35, because when light penetrates an object, it will be absorbed and scattered. According to the Beer-Lambert law, the light intensity decays exponentially with the increase of the thickness of the penetrating medium. For larger eggs, the light needs to penetrate a longer path. In this process, more photons will be absorbed or scattered by the substance in the egg, resulting in a weakening of the light intensity. Therefore, in order to make the light have enough intensity to be captured by the CCD camera 43 after penetrating a larger egg, it is necessary to increase the initial intensity of the light source; The PLC controller then controls the forward and reverse motors 33 to rotate forward first, and the forward and reverse motors 33 drive the rotating screw 32 to rotate forward, and the threaded connection between the rotating screw 32 and the lifting plate 34 causes the irradiation light source 35 to move downward until the pressure sensing plate 55 contacts the upper end of the egg, and the pressure sensing plate 55 receives the pressure signal fed back by the egg. At this time, the PLC controller first controls the forward and reverse motors 33 to stop working, so that the irradiation light source 35 remains in a fixed position. At this time, the light signal receiving mechanism 4 also moves to the side of the egg, and obtains the image of the current egg through the CCD camera 43, and then transmits the image to the computer, and uses image processing software to analyze the image. The software can judge the depth of the egg color by calculating the grayscale value or color value of the pixels in the image. For example, after the image is converted into a grayscale image, the higher the grayscale value, the lighter the color, and the lower the grayscale value, the darker the color. This quickly confirms the color depth of the eggs. The PLC controller controls the action of the electric telescopic rod 68 based on the signal of the color depth of the eggs. Specifically, the darker the color of the eggs, the longer the PLC controller controls the electric telescopic rod 68 to work, and the longer the distance that the electric telescopic rod 68 drives the transmission rack 69 to reset and move. The cooperation of the transmission rack 69 and the transmission gear 610 makes the resistance value of the potentiometer 63 decrease more, further increasing the power supply current of the irradiation light source 35 and the luminous intensity of the irradiation light source 35. Because dark-colored eggs have stronger light absorption ability and poorer light transmittance, it is necessary to increase the light source intensity so that the internal structure information can be better captured by the CCD camera 43 through the eggshell; while light-colored eggs, such as white eggs, absorb less light and have better light transmittance. Too high a light source intensity may cause the image to be too bright and details to be lost. At this time, it is necessary to reduce the light source intensity. When the CCD camera 43 completes the identification of the color depth of the eggs, the PLC controller controls the forward and reverse motors 33 to reversely drive the rotating screw 32 to rotate, thereby driving the irradiation light source 35 to move upward away from the eggs, and in this upward process, the PLC controller controls the deflection motor 53 to drive the transmission shaft 52 and the extension rod 54 to drive the pressure sensing plate 55 to deflect 90 degrees, so that the pressure sensing plate 55 leaves the shielding of the irradiation light source 35, so that the irradiation light source 35 can subsequently emit irradiation light to the eggs. In the process of the forward and reverse motors 33 driving the irradiation light source 35 to move upward, the PLC controller also synchronously controls the drive motor 72 to work, and the drive motor 72 drives the drive screw 71 to rotate, and through the threaded socket effect of the drive screw 71 and the moving seat 73, the moving seat 73 drives the in-place switch 74 to move toward the synchronous seat 67 until the in-place switch 74 and the synchronous seat 67 are squeezed so that the in-place switch 74 is pressed and triggered. At this time, the switch is pressed to feedback a signal to the PLC controller, and the PLC controller controls the forward and reverse motors 33 to stop the action, and confirms the final irradiation distance of the irradiation light source 35. Specifically, when the size of the egg is larger, the distance moved by the synchronous seat 67 is shorter, so that the interval distance between the synchronous seat 67 and the in-place switch 74 is larger, and the irradiation light source 35 can be moved up a larger distance, so that the distance between the irradiation light source 35 and the egg is larger. Because when the irradiation light source 35 is closer to the egg, the incident angle and reflection angle of the light on the surface of the egg change greatly, and it is easy to produce more scattering and diffuse reflection. The larger the size of the egg, the more obvious this scattering and diffuse reflection phenomenon will be, which will make the light become chaotic, affecting the observation of the surface details and internal structure of the egg. Increasing the distance between the light source and the egg can make the light more concentrated and parallel to irradiate the egg, reduce scattering and diffuse reflection, and improve the clarity and accuracy of imaging; When the quality of poultry eggs is formally optically inspected, the PLC controller controls the irradiation light source 35 to emit a light beam to the poultry eggs. The light beam emitted by the irradiation light source 35 passes through the poultry egg shell and scatters in all directions inside the poultry egg. The CCD camera 43 receives the light signal emitted by the light beam through the poultry egg shell. When the light beam irradiates the inside of the poultry egg, scattering occurs. The intensity and distribution of the scattered light are related to the structure and material distribution inside the poultry egg. For example, whether the boundary between the yolk and the egg white is clear, whether there are foreign objects, etc. will affect the scattering of light. The information of the scattered light can be used to detect the structural integrity and uniformity inside the poultry egg, and then the quality of the poultry egg can be quickly and non-destructively inspected. The circular electric slide rail 41 drives the CCD camera 43 to move around the poultry egg to receive light signals from different surfaces of the poultry egg. After the inspection is completed, the PLC controller controls the conveyor 8 to continue working and transfers the next poultry egg to the optical inspection station. It is additionally noted that the size difference of different poultry eggs is within a limited range, so that the adjustment of the irradiation distance of the irradiation light source 35 from the poultry eggs is also within a limited range. The CCD camera 43 is an area array CCD camera 43, which is composed of a large number of photosensitive units (pixels) arranged in a matrix form, and can capture the image information of the entire screen at one time. Its photosensitive surface is a plane. Compared with some other types of CCD cameras 43, it has a wider horizontal and vertical field of view and can simultaneously image a larger area of ​​the scene. Therefore, when the CCD camera 43 is used to receive the scattered light signal changes generated by the light beam passing through the egg shell, the CCD camera 43 will not be out of the light signal receiving range of the side of the egg due to the lifting plate 34 driving the irradiation light source 35 to move up and down.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-destructive automatic detection device for egg quality, comprising a base (1), a conveyor (8) fixedly mounted on the upper end of the base (1), a plurality of egg trays (9) fixedly mounted at equal intervals on the conveyor (8), characterized in that: Also includes: An egg straightening mechanism (2) is fixedly mounted on the upper end of the base (1) and is arranged on one side of the conveyor (8); A vertical light source mechanism (3) is fixedly mounted on the upper end of the base (1) and is arranged on one side of the conveyor (8); An optical signal receiving mechanism (4) is fixedly mounted on the lower side of the moving end of the vertical light source mechanism (3); An egg position sensing feedback mechanism (5) is mounted on the output end of the vertical light source mechanism (3); The light source illumination intensity self-regulating mechanism (6) is fixedly mounted on the vertical light source mechanism (3) and is electrically connected to the PLC controller. The PLC controller performs feedback control on the adjustment degree of the light source illumination intensity self-regulating mechanism (6) based on the egg size information fed back by the egg straightening mechanism (2) and the egg color depth information fed back by the light signal receiving mechanism (4); The light source irradiation distance self-regulating mechanism (7) is mounted on the light source irradiation intensity self-regulating mechanism (6) and is electrically connected to a PLC controller. The PLC controller controls the operation of the light source irradiation distance self-regulating mechanism (7) based on the egg size information fed back by the egg straightening mechanism (2).

2. The non-destructive automatic detection device for egg quality according to claim 1, characterized in that: The egg straightening mechanism (2) comprises an electric push rod (21) fixedly mounted on the upper end of the base (1); the upper movable end of the electric push rod (21) is fixedly connected to a rotating motor (22); the upper output end of the rotating motor (22) is fixedly connected to a transverse plate (23); one end of the transverse plate (23) is fixedly connected to a straightening cylinder (24); the inner wall of the straightening cylinder (24) is fixedly connected to an inflatable airbag (25); the surface of the inflatable airbag (25) is coated with a layer of polytetrafluoroethylene coating; an air supply pump (26) is fixedly mounted on the outer wall of the straightening cylinder (24); the air outlet of the air supply pump (26) is connected to the inflatable airbag (25); an air pressure sensor (27) is also embedded in the straightening cylinder (24); and a counterweight (28) is fixedly mounted on one end of the transverse plate (23) away from the straightening cylinder (24).

3. The non-destructive automatic detection device for egg quality according to claim 2, characterized in that: The vertical light source mechanism (3) comprises a U-shaped support plate (31) fixedly mounted on the upper end of the base (1); a rotating screw (32) is rotatably connected between the U-shaped support plate (31) and the base (1); a forward and reverse motor (33) for driving the rotating screw (32) to rotate is fixedly mounted on the upper end of the U-shaped support plate (31); a lifting plate (34) is threadedly sleeved on the rod wall of the rotating screw (32); and an irradiation light source (35) is fixedly sleeved on the lifting plate (34).

4. The non-destructive automatic detection device for egg quality according to claim 3 is characterized in that: The optical signal receiving mechanism (4) comprises a circular electric slide rail (41) fixedly mounted at the lower end of the lifting plate (34), the lower end of a slider in the circular electric slide rail (41) being fixedly connected to a fixing column (42), and the lower end of the fixing column (42) being fixedly connected to a CCD camera (43).

5. The non-destructive automatic detection device for egg quality according to claim 4, characterized in that: The egg position sensing feedback mechanism (5) comprises an L-shaped positioning plate (51) fixedly mounted on the outer wall of the irradiation light source (35); a transmission shaft (52) is rotatably connected between the L-shaped positioning plate (51) and the irradiation light source (35); a deflection motor (53) for driving the transmission shaft (52) to rotate is fixedly mounted on the outer wall of the L-shaped positioning plate (51); an extension rod (54) is fixedly sleeved on the shaft wall of the transmission shaft (52); and a pressure sensing plate (55) is fixedly connected to the lower end of the extension rod (54).

6. The non-destructive automatic detection device for egg quality according to claim 5, characterized in that: The light source illumination intensity self-regulating mechanism (6) comprises a regulating shell (61) fixedly mounted on the upper end of the lifting plate (34); a U-shaped fixing plate (62) arranged on the outside of the regulating shell (61) is also fixedly mounted on the upper end of the lifting plate (34); a potentiometer (63) is fixedly mounted on the inner top of the U-shaped fixing plate (62); a reduction gear box (64) is also fixedly mounted on the inner side of the U-shaped fixing plate (62); an output end of the reduction gear box (64) is fixedly connected to the center point of the rotation input end of the potentiometer (63); and a synchronous screw is rotatably connected to the upper side of the inner wall of the regulating shell (61). (65), a synchronous motor (66) for driving the synchronous screw (65) to rotate is fixedly mounted on the outer wall of the regulating shell (61), a synchronous seat (67) is threadedly sleeved on the rod wall of the synchronous screw (65), the upper end of the synchronous seat (67) passes through the upper end of the regulating shell (61) through a strip-shaped opening opened at the upper end of the regulating shell (61), and is fixedly connected to an electric telescopic rod (68), the movable end of the electric telescopic rod (68) is fixedly connected to a transmission rack (69), and the lower input end of the reduction gear box (64) is fixedly connected to a transmission gear (610) meshing with the transmission rack (69).

7. The non-destructive automatic detection device for egg quality according to claim 6, characterized in that: The light source irradiation distance self-regulating mechanism (7) comprises a driving screw (71) rotatably connected to the inner wall of the regulating shell (61) and arranged in parallel with the synchronous screw (65); a driving motor (72) for driving the driving screw (71) to rotate is fixedly mounted on the outer wall of the regulating shell (61); a moving seat (73) is threadedly sleeved on the rod wall of the driving screw (71); and an in-position switch (74) arranged opposite to the synchronous seat (67) is fixedly mounted on the side wall of the moving seat (73).

8. A method for using a non-destructive automatic detection device for egg quality, which uses the non-destructive automatic detection device for egg quality as claimed in claim 7, characterized in that: The steps include: S1. Through the egg straightening mechanism (2), the conveyor (8), and the egg tray (9), the eggs to be inspected can be quickly transferred to the optical inspection station, and the eggs of various specifications can be straightened; S2. The eggs are illuminated with strong light by means of the egg straightening mechanism (2), the vertical light source mechanism (3), the light signal receiving mechanism (4), and the light source illumination intensity self-regulating mechanism (6). The internal quality of the eggs is judged based on the difference in light transmittance color and shadow inside the eggs. Problems such as cracks, stains, loose yellow and deterioration can be detected. When the eggs are straightened, the size of the eggs can be synchronously fed back, and the illumination intensity of the light source can be automatically regulated based on the size of the eggs. S3. Using the optical signal receiving mechanism (4) to determine the depth of the egg color, and automatically adjusting the intensity of the light source based on the depth of the egg color, the darker the egg color, the greater the intensity of the light source, to ensure the penetration of the detection light, thereby ensuring the quality of optical detection of egg quality; S4. Automatically adjust the irradiation distance of the light source based on the size of the eggs. The larger the egg size, the greater the irradiation distance of the light source, ensuring that the entire egg can be evenly irradiated.

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