Camera height adjusting equipment for egg product detection and control system thereof

Abstract

The invention relates to the technical field of camera adjustment, and discloses a camera height adjusting device for egg product detection and a control system thereof. A camera height adjusting device for egg product detection comprises a detection table, the upper end face of the detection table is horizontal, a supporting rod is fixedly installed at the upper end of the detection table, and a top plate is fixedly installed at the upper end of the supporting rod; the adjusting mechanism comprises a lifting assembly and a driving assembly, a camera is detachably installed at the lower end of the lifting assembly, and the driving assembly is installed on the top plate and used for driving the telescopic action of the lifting assembly; the supporting mechanism comprises a supporting assembly and a lifting assembly, and the supporting assembly is used for supporting the egg liquid to be detected. While ensuring that the camera can capture the complete image of the egg liquid coverage, the height of the camera can be adjusted according to the actual state of the egg liquid to ensure the image quality, so that the accuracy of subsequent measurement of the egg liquid coverage area is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of camera height adjustment, and in particular to a camera height adjustment device for egg detection and a control system thereof. Background Art

[0002] A camera, also known as a computer camera, is a video input device that is widely used in video conferencing, telemedicine, and real-time monitoring. Ordinary people can also use cameras to talk and communicate with each other on the Internet with images and sounds. In addition, people can also use it for various popular digital images and audio and video processing. Cameras generally have basic functions such as video recording / transmission and static image capture. After the lens captures the image, the photosensitive component circuit and control component in the camera process the image and convert it into a digital signal that can be recognized by the computer. Then, it is connected to the computer through a parallel port or USB and the software restores the image for use. Cameras are used in product quality inspection, which is mainly reflected in capturing the image of the product through the camera, and then using image processing technology and machine vision systems to conduct automated, non-contact quality assessment of the product.

[0003] In the process of monitoring the quality of egg liquid, it is necessary to evaluate the appearance characteristics of egg liquid. Researchers often use the naked eye observation method to monitor the coverage area, color, transparency, impurities and other aspects of egg liquid. The introduction of the above-mentioned image recognition technology into the field of egg liquid detection can obviously improve the detection efficiency of egg liquid, but there are still unresolved problems in this technical application. In the process of capturing the egg liquid image with the camera, the height of the camera has a direct impact on the completeness of the egg liquid image capture. Generally speaking, the higher the camera is installed, the wider its field of view is, so the area that can be covered will increase accordingly. However, this does not mean that the camera can be installed infinitely to expand the coverage area. Because the installation height is too high may cause problems such as picture distortion, affecting the image quality and the accuracy of area measurement. In addition, the egg liquid coverage area of ​​different eggs is also different, so the image captured by the fixed position camera cannot meet the image accuracy requirements of egg liquid detection. In order to reduce the impact of the difference in egg liquid coverage area on the batch detection of egg liquid, a device that can preset and fine-tune the camera height in a targeted manner according to the actual state of the egg liquid is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a camera height adjustment device for egg inspection and a control system thereof to solve the above technical problems:

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A camera height adjustment device for egg inspection, comprising:

[0007] A testing platform, wherein the upper end surface of the testing platform is horizontal, and a support rod is fixedly mounted on the upper end, and a top plate is fixedly mounted on the upper end of the support rod;

[0008] The adjusting mechanism comprises a lifting assembly and a driving assembly, wherein a camera can be detachably mounted on the lower end of the lifting assembly, and the driving assembly is mounted on the top plate and is used to drive the telescopic action of the lifting assembly;

[0009] The supporting mechanism comprises a supporting assembly and a lifting assembly, wherein the supporting assembly is used to support the egg liquid to be tested, and the lifting assembly is arranged at the upper end of the testing platform and is used to lift the supporting assembly;

[0010] The conveying mechanism comprises a conveyor belt body for conveying egg liquid.

[0011] As a further technical solution, the lifting assembly includes:

[0012] A first sleeve, the first sleeve passes through the top plate and is fixedly connected to the top plate;

[0013] A second sleeve, wherein the second sleeve is axially slidably connected in the first sleeve, a mounting plate is fixedly provided at the lower end of the second sleeve, and the camera is detachably mounted at the lower end of the mounting plate;

[0014] A main shaft, wherein a first threaded sleeve and a second threaded sleeve are fixedly provided on the main shaft, the pitch of the first threaded sleeve is greater than the pitch of the second threaded sleeve, and the first threaded sleeve is threadedly connected to the first sleeve, and the second threaded sleeve is threadedly connected to the second sleeve.

[0015] As a further technical solution, the driving assembly includes:

[0016] A rotating bracket, wherein the rotating bracket is fixedly arranged at the upper end of the top plate, and a bearing is arranged inside the rotating bracket;

[0017] A worm wheel, wherein the lower end of the worm wheel is coaxially fixedly connected with a rotating tube, the rotating tube is rotatably connected to the upper end of the rotating bracket through the bearing, the main shaft passes through the worm wheel, and is movably connected to the worm wheel through a spline;

[0018] A servo motor is fixedly arranged on the top plate, an output end of the servo motor is transmission-connected with a worm, and the worm is meshed with the worm wheel.

[0019] As a further technical solution, the support assembly includes:

[0020] A tray, a truncated cone-shaped counterweight block is fixedly provided at the lower end of the tray;

[0021] A support plate, wherein the upper end of the support plate is provided with a truncated cone-shaped groove that matches the counterweight block;

[0022] A low-speed motor, the output end of which is transmission-connected to the support plate.

[0023] As a further technical solution, a through hole is provided on the belt surface of the conveyor belt body, and the inner diameter of the through hole is smaller than the diameter of the tray.

[0024] As a further technical solution, the lifting assembly includes:

[0025] A transverse plate, the transverse plate is horizontally arranged between the upper and lower belt surfaces of the conveyor belt body, and the low-speed motor is fixedly mounted on the transverse plate;

[0026] The electric push rods are provided with two and are respectively located at the two ends of the horizontal plate. The electric push rods are installed at the upper end of the detection platform, and the output ends of the electric push rods are fixedly connected to the horizontal plate.

[0027] A control system for a camera height adjustment device for egg inspection, the system comprising:

[0028] A collection unit, comprising a pressure sensor disposed in the groove;

[0029] The analysis module includes a data processing unit and a measurement and analysis unit. The data processing unit is used to process the pressure value data measured by the pressure sensor and establish the initial height value of the camera according to the processing result. The measurement and analysis unit is used to analyze the measurement data of the egg liquid coverage area and establish the adjustment strategy according to the analysis result.

[0030] A control module is used to adjust the height of the camera according to the initial height value and the adjustment strategy.

[0031] As a further technical solution, the process of processing the pressure value data includes:

[0032]

[0033]

[0034] By formula Calculate the initial height of the camera ;

[0035] in, is the pressure value measured by the pressure sensor; is the acceleration due to gravity; is the mass of the pallet; is the standard value of egg liquid density; is the preset coefficient; is the focal length of the camera; is the aperture value of the camera; is the preset conversion function; is the preset offset value, and .

[0036] As a further technical solution, the process of analyzing the measurement data of the egg liquid coverage area includes:

[0037] Driven by the low-speed motor, the tray rotates intermittently, and the egg liquid image is captured during each pause period of the intermittent rotation, and n data of the egg liquid coverage area are measured by image recognition technology:

[0038] By formula Calculate the standard deviation of n data of the measured egg liquid coverage area ,in, is the value of the egg liquid coverage area measured for the i-th time;

[0039] The standard deviation With preset threshold To compare:

[0040] like , then the output As the final measurement of the area covered by the egg;

[0041] like , then the adjustment amount of the camera height is After adjusting the vertical upward, measure the egg liquid coverage area again. is the preset scale factor.

[0042] Beneficial effects of the present invention:

[0043] (1) The height of the camera can be adjusted according to specific work requirements by setting an adjustment mechanism. While ensuring that the camera can capture a complete image of the egg liquid coverage surface, the camera height can be adjusted according to the actual state of the egg liquid to ensure image quality, thereby improving the accuracy of subsequent egg liquid coverage area measurement.

[0044] (2) The present invention can realize batch detection of egg liquid by setting up the supporting mechanism and the conveying mechanism. During the specific detection process, the lifting component drives the supporting component to lift the egg liquid from the conveyor belt body, and then put the egg liquid back into the conveyor belt body after the detection is completed. While providing a support carrier for the egg liquid detection, it can also automatically complete loading and unloading, thereby reducing labor costs and improving detection efficiency.

[0045] (3) The present invention can fine-tune the height of the camera by setting up the lifting assembly, and can lock the current position of the camera in time after the camera height adjustment is completed through the coordinated transmission of the worm and the worm wheel in the driving assembly.

[0046] (4) In the present invention, the maximum static friction between the pallet and the support plate is increased by setting a counterweight block, thereby preventing relative rotation between the pallet and the support plate. In addition, since the pallet is transported to the top of the support plate along the conveyor belt body, inertia and other reasons may cause the pallet and the camera's preset shooting position to shift. The counterweight block is in the shape of a truncated cone, and under the action of gravity, it can be just embedded in the groove, thereby realizing the position correction of the pallet. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described below in conjunction with the accompanying drawings.

[0048] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the camera height adjustment device for egg inspection in the present invention;

[0049] Figure 2 It is a front view of the camera height adjustment device for egg inspection in the present invention;

[0050] Figure 3 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention after partial sectioning;

[0051] Figure 4 It is a schematic diagram of the three-dimensional structure of the support mechanism in the present invention;

[0052] Figure 5 It is a front view of the supporting mechanism of the present invention after partial sectioning;

[0053] Figure 6 A block diagram showing the contents of a control system of a camera height adjustment device for egg inspection in the present invention;

[0054] Description of the drawings: 1. Inspection table; 2. Adjustment mechanism; 3. Support mechanism; 4. Conveying mechanism; 5. Camera; 11. Support rod; 12. Top plate; 21. Lifting assembly; 22. Driving assembly; 31. Support assembly; 32. Lifting assembly; 41. Conveyor belt body; 411. Through hole; 211. First sleeve; 212. Second sleeve; 213. Main shaft; 2131. First threaded sleeve; 2132. Second threaded sleeve; 221. Rotating bracket; 222. Worm gear; 223. Servo motor; 224. Worm; 311. Tray; 312. Counterweight; 313. Support plate; 3131. Groove; 314. Low-speed motor; 321. Cross plate; 322. Electric push rod. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0056] See also Figure 1~2 As shown, a camera height adjustment device for egg inspection includes:

[0057] A testing platform 1, wherein the upper end surface of the testing platform 1 is horizontal, and a support rod 11 is fixedly mounted on the upper end, and a top plate 12 is fixedly mounted on the upper end of the support rod 11;

[0058] The adjusting mechanism 2 includes a lifting assembly 21 and a driving assembly 22. The camera 5 is detachably mounted on the lower end of the lifting assembly 21. The driving assembly 22 is mounted on the top plate 12 and is used to drive the telescopic action of the lifting assembly 21.

[0059] The support mechanism 3 includes a support component 31 and a lifting component 32, wherein the support component 31 is used to support the egg liquid to be tested, and the lifting component 21 is arranged at the upper end of the testing platform 1, and is used to lift the support component 31;

[0060] The conveying mechanism 4 comprises a conveyor belt body 41 for conveying the egg liquid.

[0061] Through the above technical scheme, this embodiment provides the main structural content of a camera height adjustment device for egg product inspection. The monitoring platform provides a horizontal overall support surface for egg liquid inspection. The height of the camera 5 can be adjusted according to specific work requirements through the setting of the adjustment mechanism 2. While ensuring that the camera 5 can capture a complete image of the egg liquid coverage surface, the height of the camera 5 can be adjusted according to the actual state of the egg liquid to ensure image quality, so as to improve the accuracy of subsequent egg liquid coverage area measurement. In addition, through the setting of the support mechanism 3 and the conveying mechanism 4, batch inspection of egg liquid can be achieved. In the specific inspection process, the lifting component 32 drives the support component 31 to lift the egg liquid from the conveyor belt body 41. After the inspection is completed, the egg liquid is put back into the conveyor belt body 41. While providing a support carrier for egg liquid inspection, it can also automatically complete loading and unloading, thereby improving the efficiency of inspection.

[0062] See also Figure 3 As shown, the lifting assembly 21 includes:

[0063] A first sleeve 211, wherein the first sleeve 211 passes through the top plate 12 and is fixedly connected to the top plate 12;

[0064] A second sleeve 212, wherein the second sleeve 212 is axially slidably connected in the first sleeve 211, a mounting plate is fixedly provided at the lower end of the second sleeve 212, and the camera 5 is detachably mounted at the lower end of the mounting plate;

[0065] The main shaft 213 has a first threaded sleeve 2131 and a second threaded sleeve 2132 fixedly sleeved thereon. The pitch of the first threaded sleeve 2131 is greater than the pitch of the second threaded sleeve 2132. The first threaded sleeve 2131 is threadedly connected to the first sleeve 211, and the second threaded sleeve 2132 is threadedly connected to the second sleeve 212.

[0066] Through the above technical solution, the present embodiment provides a specific structure of the lifting assembly 21, the camera 5 can be detachably mounted at the lower end of the mounting plate, which is convenient for replacement and maintenance, and the first sleeve 211, the second sleeve 212 and the main shaft 213 cooperate to achieve the height adjustment of the camera 5. Specifically, the main shaft 213 rotates to drive the second sleeve 212 to move up and down in the first sleeve 211, thereby adjusting the height of the camera 5. Since the change in the optimal object distance caused by the difference in the egg liquid coverage area is subtle, in order to achieve the fine-tuning effect of the height of the camera 5, it is also necessary to say that the first threaded sleeve 2131 and the second threaded sleeve 2132 have the same thread spiral direction, and the pitch of the first threaded sleeve 2131 is slightly larger than the pitch of the second threaded sleeve 2132. When the main shaft 213 rotates one circle, the adjustment amount of the height of the camera 5 is the difference in the pitch of the first threaded sleeve 2131 and the second threaded sleeve 2132, thereby achieving the fine-tuning of the height of the camera 5. It should also be noted that the second sleeve 212 is slidably connected to the first sleeve 211 in the vertical direction, and the second sleeve 212 will not rotate along with the rotation of the main shaft 213 .

[0067] See also Figure 3 As shown, the driving assembly 22 includes:

[0068] A rotating bracket 221, wherein the rotating bracket 221 is fixedly disposed on the upper end of the top plate 12, and a bearing is disposed inside the rotating bracket 221;

[0069] A worm wheel 222, wherein the lower end of the worm wheel 222 is coaxially fixedly connected with a rotating tube, the rotating tube is rotatably connected to the upper end of the rotating bracket 221 through the bearing, the main shaft 213 passes through the worm wheel 222, and is movably connected to the worm wheel 222 through a spline;

[0070] A servo motor 223 is fixedly disposed on the top plate 12 . An output end of the servo motor 223 is drivingly connected to a worm 224 . The worm 224 is meshed with the worm wheel 222 .

[0071] Through the above technical solution, this embodiment provides a specific structure of the drive assembly 22, the top plate 12 provides fixed support for the drive assembly 22 and the lifting assembly 21, and in the specific process of adjusting the height of the camera 5, the servo motor 223 directly drives the screw to rotate and drives the worm wheel 222 meshing therewith to rotate. Since the worm wheel 222 and the main shaft 213 are movably connected by splines, there is no constraint on the vertical direction of the main shaft 213, so the main shaft 213 rotates synchronously with the rotation of the worm wheel 222 and moves up and down. In addition, the coordinated transmission of the worm 224 and the worm wheel 222 also has a self-locking effect, which can lock the current position of the camera 5 in time after the height adjustment of the camera 5 is completed.

[0072] See also Figures 4 and 5 As shown, the support assembly 31 includes:

[0073] A tray 311, a truncated cone-shaped counterweight 312 is fixedly disposed at the lower end of the tray 311;

[0074] A support plate 313, wherein a truncated cone-shaped groove 3131 is formed at the upper end of the support plate 313 to cooperate with the counterweight block 312;

[0075] A low-speed motor 314 , wherein the output end of the low-speed motor 314 is transmission-connected to the support plate 313 .

[0076] Through the above technical scheme, this embodiment provides the specific content of the support component 31. After the action of lifting the egg liquid is completed, the low-speed motor 314 drives the support plate 313 and the tray 311 to rotate intermittently, and the image of the egg liquid is collected during the intermittent rotation period. In this way, multiple images of the egg liquid can be captured and corresponding detection can be performed in combination with image recognition technology. The reason for the above multiple image capture and detection is that the egg white part of the egg liquid is transparent, so a single image capture may not necessarily obtain a complete and clear egg liquid contour. By rotating the egg liquid and capturing and detecting images multiple times, multiple data of the egg liquid coverage area can be obtained. If the data difference is not large, it indicates that the captured egg liquid contour is relatively complete and clear. It should also be noted that the counterweight 312 is provided to increase the maximum static friction between the tray 311 and the support plate 313 to prevent the tray 311 and the support plate 313 from rotating relative to each other. In addition, since the tray 311 is transported to the top of the support plate 313 with the conveyor belt body 41, inertia and other reasons may cause the tray 311 to deviate from the preset shooting position of the camera 5. The counterweight 312 is in a truncated cone shape and can be just embedded in the groove 3131 under the action of gravity, so that the position correction of the tray 311 can be achieved. In summary, the support assembly 31 plays a role in positioning and supporting the egg liquid.

[0077] The belt surface of the conveyor belt body 41 is provided with a through hole 411, and the inner diameter of the through hole 411 is smaller than the diameter of the tray 311. Through the above technical solution, the lower end of the tray 311 can be embedded in the through hole 411 and transported by the conveyor belt body 41.

[0078] See also Figures 4 and 5 As shown, the lifting assembly 32 includes:

[0079] A transverse plate 321, wherein the transverse plate 321 is horizontally arranged between the upper and lower belt surfaces of the conveyor belt body 41, and the low-speed motor 314 is fixedly mounted on the transverse plate 321;

[0080] The electric push rod 322 is provided with two electric push rods 322 and is respectively located at the two ends of the transverse plate 321 . The electric push rod 322 is installed at the upper end of the detection platform 1 , and the output end of the electric push rod 322 is fixedly connected to the transverse plate 321 .

[0081] Through the above technical scheme, this embodiment provides a specific structure of the lifting component 32. In the process of lifting the tray 311 and the egg liquid in the tray 311, the two electric push rods 322 synchronously push the cross plate 321 upward to complete the lifting action of the support component 31. It should also be noted that the cross plate 321 is located between the upper and lower belt surfaces of the conveyor belt body 41. Therefore, during the entire lifting action, neither the lifting component 32 nor the support component 31 will touch the conveyor belt body 41, thereby ensuring the stability of the egg liquid transportation.

[0082] See also Figure 6 As shown, a control system for a camera height adjustment device for egg inspection, the system comprising:

[0083] A collection unit, comprising a pressure sensor disposed in the groove 3131;

[0084] The analysis module includes a data processing unit and a measurement and analysis unit. The data processing unit is used to process the pressure value data measured by the pressure sensor and establish the initial height value of the camera 5 according to the processing result. The measurement and analysis unit is used to analyze the measurement data of the egg liquid coverage area and establish the adjustment strategy according to the analysis result.

[0085] The control module is used to adjust the height of the camera 5 according to the initial height value and the adjustment strategy.

[0086] Through the above technical scheme, the content of the control system of the camera height adjustment device for egg product detection in this embodiment can obtain the pressure value data of the egg liquid to be tested through the setting of the acquisition unit, the processing unit processes the measured pressure value data, and establishes the initial height value of the camera 5 according to the processing result, and completes the capture of the egg liquid image and the measurement of the egg liquid coverage area at the initial height. The measurement and analysis unit then analyzes the measurement data of the egg liquid coverage area, and establishes the adjustment strategy according to the analysis result. Finally, the control module adjusts the height of the camera 5 according to the initial height value and the adjustment strategy.

[0087] The process of processing pressure value data includes:

[0088]

[0089]

[0090] By formula Calculate and obtain the initial height value of camera 5 ;

[0091] in, is the pressure value measured by the pressure sensor; is the acceleration due to gravity; is the mass of the tray 311; is the standard value of egg liquid density; is the preset coefficient; is the focal length of camera 5; is the aperture value of camera 5; is the preset conversion function; is the preset offset value, and .

[0092] Through the above technical solution, this embodiment provides a specific process for processing pressure value data, specifically through the formula ; Calculate and obtain the initial height value of camera 5 ;formula Mainly predict the coverage area of ​​egg liquid to obtain the predicted value , then Import into the trained mapping model, that is, through the formula Get the initial height value It should be noted that It is a preset coefficient, which can be obtained based on historical experimental data; It is a preset conversion function, which is specifically related to the performance characteristics of the camera 5. The mapping relationship is obtained by fitting experimental data, which will not be described in detail here. In addition, the height of the camera 5 is specifically the distance from the camera 5 to the egg liquid, that is, the object distance.

[0093] The process of analyzing the egg coverage area measurement data includes:

[0094] The tray 311 rotates intermittently under the drive of the low-speed motor 314, and captures the egg liquid image during each pause period of the intermittent rotation, and measures n data of the egg liquid coverage area through image recognition technology:

[0095] By formula Calculate the standard deviation of n data of the measured egg liquid coverage area ,in, is the value of the egg liquid coverage area measured for the i-th time;

[0096] The standard deviation With preset threshold To compare:

[0097] like , then the output As the final measurement of the area covered by the egg;

[0098] like , then the adjustment amount of the camera 5 height is After adjusting the vertical upward, measure the egg liquid coverage area again. is the preset scale factor.

[0099] Through the above technical solution, this embodiment provides a process for analyzing the measurement data of the egg liquid coverage area. First, the tray 311 is intermittently rotated under the drive of the low-speed motor 314, and the egg liquid image is captured during each pause period of the intermittent rotation, and n data of the egg liquid coverage area are measured by image recognition technology, and then the formula is used to calculate the n data of the egg liquid coverage area. Calculate the standard deviation of n data of the measured egg liquid coverage area ,when , indicating that the outline of the egg liquid image captured by camera 5 at the initial height is relatively clear and complete, so the output As a final measurement of the area covered by the egg, For n The average value of , indicating that the egg liquid image captured by camera 5 is not clear and complete, so the height of camera 5 is adjusted accordingly. Specifically, the height of camera 5 is adjusted by After the vertical upward adjustment, the egg liquid coverage area is measured again until the standard deviation of a set of area measurement values ​​obtained at a certain camera 5 height does not exceed the preset threshold , and then output the corresponding average value as the final measurement value of the egg liquid coverage area. It should also be noted that is the preset scale factor, , The preset maximum unit adjustment amount.

[0100] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A camera height adjustment device for egg inspection, characterized in that: include: A testing platform (1), wherein the upper end surface of the testing platform (1) is horizontal, and a support rod (11) is fixedly mounted on the upper end, and a top plate (12) is fixedly mounted on the upper end of the support rod (11); The adjusting mechanism (2) comprises a lifting component (21) and a driving component (22), wherein a camera (5) is detachably mounted on the lower end of the lifting component (21), and the driving component (22) is mounted on the top plate (12) and is used to drive the telescopic action of the lifting component (21); The support mechanism (3) comprises a support component (31) and a lifting component (32), wherein the support component (31) is used to support the egg liquid to be tested, and the lifting component (21) is arranged at the upper end of the testing platform (1) and is used to lift the support component (31); A conveying mechanism (4), comprising a conveyor belt body (41) for conveying egg liquid; The lifting assembly (21) comprises: a first sleeve (211), the first sleeve (211) passing through the top plate (12) and being fixedly connected to the top plate (12); a second sleeve (212), the second sleeve (212) being axially slidably connected in the first sleeve (211), a mounting plate being fixedly provided at the lower end of the second sleeve (212), and the camera (5) being detachably mounted on the lower end of the mounting plate; A main shaft (213), wherein a first threaded sleeve (2131) and a second threaded sleeve (2132) are fixedly sleeved on the main shaft (213), the pitch of the first threaded sleeve (2131) being greater than the pitch of the second threaded sleeve (2132), the first threaded sleeve (2131) being threadedly connected to the first sleeve (211), and the second threaded sleeve (2132) being threadedly connected to the second sleeve (212).

2. The camera height adjustment device for egg inspection according to claim 1, characterized in that: The driving assembly (22) comprises: A rotating bracket (221), the rotating bracket (221) being fixedly arranged on the upper end of the top plate (12), and a bearing being arranged inside the rotating bracket (221); A worm wheel (222), wherein the lower end of the worm wheel (222) is coaxially fixedly connected to a rotating tube, the rotating tube is rotatably connected to the upper end of the rotating bracket (221) via the bearing, and the main shaft (213) passes through the worm wheel (222) and is movably connected to the worm wheel (222) via a spline; A servo motor (223), the servo motor (223) being fixedly arranged on the top plate (12), the output end of the servo motor (223) being drivingly connected to a worm (224), the worm (224) being meshed with the worm wheel (222).

3. The camera height adjustment device for egg inspection according to claim 2, characterized in that: The support assembly (31) comprises: A tray (311), a truncated cone-shaped counterweight (312) being fixedly disposed at the lower end of the tray (311); A support plate (313), wherein the upper end of the support plate (313) is provided with a truncated cone-shaped groove (3131) that matches the counterweight block (312); A low-speed motor (314), wherein an output end of the low-speed motor (314) is drivingly connected to the support plate (313).

4. The camera height adjustment device for egg inspection according to claim 3, characterized in that: A through hole (411) is provided on the belt surface of the conveyor belt body (41), and the inner diameter of the through hole (411) is smaller than the diameter of the tray (311).

5. The camera height adjustment device for egg inspection according to claim 4, characterized in that: The lifting assembly (32) comprises: A transverse plate (321), the transverse plate (321) being horizontally arranged between the upper and lower belt surfaces of the conveyor belt body (41), and the low-speed motor (314) being fixedly mounted on the transverse plate (321); An electric push rod (322), wherein two electric push rods (322) are provided and are respectively located at two ends of the transverse plate (321); the electric push rod (322) is mounted on the upper end of the detection platform (1), and the output end of the electric push rod (322) is fixedly connected to the transverse plate (321).

6. A control system for the camera height adjustment device for egg inspection as claimed in claim 5, characterized in that: The system comprises: A collection unit, comprising a pressure sensor arranged in the groove (3131); The analysis module comprises a data processing unit and a measurement and analysis unit, wherein the data processing unit is used to process the pressure value data measured by the pressure sensor and establish an initial height value of the camera (5) according to the processing result, and the measurement and analysis unit is used to analyze the measurement data of the egg liquid coverage area and establish an adjustment strategy according to the analysis result; A control module is used to adjust the height of the camera (5) according to the initial height value and the adjustment strategy.

7. The control system of the camera height adjustment device for egg inspection according to claim 6, characterized in that: The process of processing pressure value data includes: ， ， By formula Calculate and obtain the initial height value of the camera (5) ; in, is the pressure value measured by the pressure sensor; is the acceleration due to gravity; is the mass of the tray (311); is the standard value of egg liquid density; is the preset coefficient; is the focal length of the camera (5); is the aperture value of the camera (5); is the preset conversion function; is the preset offset value, and .

8. The control system of the camera height adjustment device for egg inspection according to claim 7, characterized in that: The process of analyzing the egg coverage area measurement data includes: Driven by the low-speed motor (314), the tray (311) rotates intermittently, and an image of the egg liquid is captured during each pause period of the intermittent rotation, and n data of the area covered by the egg liquid are measured by image recognition technology: By formula Calculate the standard deviation of n data of the measured egg liquid coverage area ,in is the value of the egg liquid coverage area measured for the i-th time; The standard deviation With preset threshold To compare: like , then the output As the final measurement of the area covered by the egg; like , then the height adjustment amount of the camera (5) is After adjusting the vertical upward, measure the egg liquid coverage area again. is the preset proportional coefficient; is the preset offset value, and ; It is the average value of n data of the egg liquid coverage area.

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