A river crab feed feeding device for preventing river crab diseases

Abstract

The invention relates to a feed feeding technology, which is used to solve the problem that the feed at some positions is not eaten due to the uneven distribution of river crab feed, and the feed is mixed in water to cause water pollution, which affects the health of river crabs. The invention specifically relates to a river crab feed feeding device for preventing river crab diseases, comprising an external support frame. The invention can drive a feed box to move synchronously when the sliding frame moves on a walking track, so that the river crab feed in the feed box is scattered to various positions inside a river crab breeding pond, and uneven distribution of river crab feed will not occur. The number of river crabs in a separated area is determined, so that when the feed box is distributed, the feed is quantitatively distributed according to the number of river crabs in the corresponding separated area, and the situation of excessive distribution will not occur. In addition, the feed can be distributed separately at multiple positions according to the distribution of river crabs in the separated area, so as to ensure that the distributed feed is completely eaten by the river crabs, and reduce the adverse effects on the water quality of the cultured river crabs.

Description

Technical Field

[0001] The invention relates to a feed feeding technology, in particular to a river crab feed feeding device for preventing river crab diseases. Background Art

[0002] River crab farming refers to the breeding technology of river crabs. River crabs are the most important freshwater crabs in China. They have tender meat, delicious taste and rich nutrition. Due to the strong adaptability of river crabs and the wide breeding range, the breeding scale has increased rapidly in recent years, bringing good economic benefits to farmers.

[0003] In the prior art, when feeding crabs, manual feeding is mostly adopted. The feeding amount varies according to the different hand grasping, so that the amount of feed fed in each area is different, and the growth of crabs in different areas is different. In addition, the difference in the amount of feed fed by manual feeding will cause the feed in some areas to be deposited in the water and not eaten by crabs, causing the pollution of the breeding water quality. The polluted water quality is easy to cause health problems of the breeding crabs. When feeding crabs with feed by machine, the feeding amount is more accurate, but the number of crabs at the bottom of the pond is not accurately judged, so that the thrown feed is not completely eaten by crabs, which will also cause the pollution of breeding water quality.

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] The purpose of the present invention is to drive the feeding box to move synchronously when the sliding frame moves on the walking track, so that the crab feed in the feeding box is scattered to various positions inside the crab breeding pond, and the crab feed is not unevenly distributed. The number of crabs in the separated area is determined by the processing module, so that when the feeding box is distributing the feed, it can be quantitatively distributed according to the number of crabs in the corresponding separated area, and the excessive distribution will not occur. In addition, according to the distribution of crabs in the separated area, the feed can be distributed to multiple positions separately to ensure that the distributed feed can be completely eaten by the crabs, reduce the adverse effects on the water quality of the crab breeding, solve the problem that the crab feed is not evenly distributed, resulting in the feed at some positions not being eaten, mixed in the water to cause water pollution, and affect the health of the crabs, and a crab feed feeding device for preventing crab diseases is proposed.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A crab feeding device for preventing crab diseases comprises an outer support frame, an inner support frame is arranged on the inner side of the outer support frame, a card frame is installed on one end of the inner support frame close to the outer support frame, the inner support frame divides the inner area of ​​the outer support frame into four areas of equal size, and walking tracks are arranged at four positions on the inner side of the outer support frame corresponding to the inner side of the inner support frame, support brackets are installed on both sides of the upper surface of the walking track, first grooves are opened on both sides of the outer side wall of the walking track, a rack is installed inside the first groove, and second grooves are opened on both sides of the upper surface of the walking track, the outer side wall of the walking track is slidably connected with a sliding frame, a material holding box is installed at the lower end of the sliding frame, limiting plates are integrally formed at the positions of the second grooves on both sides of the inner side wall of the sliding frame, and engaging gears are rotatably connected with the positions of the first grooves on both sides of the inner side wall of the sliding frame.

[0008] As a preferred embodiment of the present invention, driving motors are installed on both sides of the upper surface of the sliding frame at the positions corresponding to the engaging gears, a support plate is integrally formed above the inner wall of the material holding box, a material hopper is slidably connected to the inner side of the material holding box corresponding to the support plate, a number of evenly distributed telescopic springs are installed on the upper surface of the support plate corresponding to the position of the hopper, a movable plate is slidably connected to the lower surface of the material holding box, a material dropping hole is provided on one side of the lower surface of the movable plate, holes are provided in the material box, the movable plate and the material hopper at the positions corresponding to the connecting shaft, a turntable is installed at the lower end of the connecting shaft below the movable plate, a number of evenly distributed semi-convex balls are integrally formed on the outer side of the upper surface of the turntable, and a number of evenly distributed semi-convex balls are also integrally formed on the lower surface of the movable plate corresponding to the positions of the semi-convex balls on the turntable.

[0009] As a preferred embodiment of the present invention, an annular groove is provided on the inner wall of the material containing box near the bottom of the support plate, and a partition frame is slidably connected to the inner wall of the material containing box near the bottom of the annular groove. An electric push rod is installed at the position of the upper surface of the partition frame near the annular groove, and a slider is installed on the upper end of the electric push rod, and the slider can slide in the position inside the annular groove. A stepper motor is installed at the middle position of the lower surface of the movable plate, and a rotating hole is provided at the middle position of the movable plate, and a disc is rotatably connected to the inner side, and the disc is connected to the output end of the stepper motor, and a cross column is integrally formed at the middle position of the upper surface of the disc, and a through hole of the same shape and size is provided on the partition frame at the position corresponding to the cross column.

[0010] As a preferred embodiment of the present invention, a control box is further provided on the upper surface of the material holding box, a detection component is provided inside the control box, and a plurality of distributed infrared cameras and infrared rangefinders are installed on the lower surface of the material holding box, and the detection component includes a collection module, a processing module and an execution module;

[0011] The acquisition module collects the moving distance data of the sliding frame on the walking track, the image data of the crabs in the four separated areas after separation, and the change data of the total weight of the crab feed inside the hopper, and transmits the collected moving distance data, crab image data and crab feed total weight data to the processing module;

[0012] A processing module receives the moving distance data, the crab image data and the total weight data of the crab feed transmitted by the acquisition module, processes the moving distance data, the crab image data and the total weight data of the crab feed, generates a control signal according to the processing result, and transmits the control signal to the execution module;

[0013] The execution module receives the control signal transmitted by the processing module, and controls the partition frame to rotate according to the control signal to push and rotate the river crab feed inside the feeding box.

[0014] As a preferred embodiment of the present invention, the data processing steps of the processing module are as follows:

[0015] Step 1: receiving the moving distance data of the sliding frame on the walking track collected by the collection module, and comparing the moving distance data with the total length data of the walking track, generating a walking stop signal when it is determined that the sliding frame moves to the middle position on the walking track, and transmitting the walking stop signal to the execution module;

[0016] Step 2: After the sliding frame stops moving, grayscale processing is performed on the crab image data transmitted by the acquisition module, and chromaticity comparison is performed on the grayscale processed pictures. According to the chromaticity comparison, the grayscale processed pictures at the corresponding positions of the crab shell outline are arranged from light to dark in color, and the lightest color is determined as the uppermost layer and the darkest color is determined as the lowermost layer;

[0017] Step 3: Determine the shell contour area of ​​the crab in the crab pond based on the proportionally enlarged and reduced image of the crab shell edge and the size comparison of the crab shell edge on the grayscale processed image, and calculate the shell contour area of ​​the crab after growth based on the breeding time and the area of ​​the initial shell contour of the crab. Compare the determined shell contour area of ​​the crab with the calculated shell contour area of ​​the crab. If the difference between the two is within the set range, take the average of the sum of the two as the shell contour area of ​​the crab; if the difference between the two is not within the set range, determine that the collected data is incorrect and need to collect the data again;

[0018] Step 4: After obtaining the crab shell contour area data, find the total area of ​​the crab shell contour corresponding to each layer of the grayscale processed image, calculate the approximate number of crabs in each layer of the grayscale processed image, and sum the number of crabs in each layer to obtain the approximate total number of crabs in the separated area, recorded as number one; then perform the same processing operation on the other three separated areas to obtain number two, number three and number four;

[0019] Step 5: The total number of cultured river crabs is known. The total number of river crabs detected in the four areas is number one, number two, number three and number four respectively. Number one, number two, number three and number four are divided into approximately proportions, and then the number of river crabs in each separated area is determined according to the proportion and the total number. A feed placement signal is generated according to the number of river crabs in each separated area, and the feed placement signal is transmitted to the execution module;

[0020] Step 6: The falling speed data of the crab feed can be calculated based on the change in the amount of crab feed inside the hopper during the collection time, and the time required to discharge the required amount of crab feed can be calculated based on the falling speed data of the crab feed, and the closing time of the control valve at the lower end of the hopper can be calculated.

[0021] As a preferred embodiment of the present invention, the operation execution steps of the execution module are as follows:

[0022] Step 1: After receiving the walking stop signal, the driving motor driving the engaging gears on both sides of the sliding frame is controlled to stop working;

[0023] Step 2: After receiving the feed delivery signal, according to the position information of the crab in the separation area in the feed delivery signal, the driving motor that drives the gears on both sides of the sliding frame to rotate is controlled to work, and the feeding box at the lower end of the sliding frame is moved to the specified position, and then the control valve at the lower end of the feeding hopper is controlled to open, and according to the time difference between the time required to discharge a specified amount of crab feed and the valve closing time, the control valve is closed when the time to discharge the crab feed reaches the time difference;

[0024] Step 3: If the river crabs at the bottom of the pond gather in one area within the separation area, the river crab feed on the movable plate will be discharged as a whole; if the river crabs at the bottom of the pond are scattered in multiple areas within the separation area, after the turntable shakes the river crab feed on the movable plate for a period of time, the electric push rod connected to the separation frame is controlled to extend, and the separation frame is used to separate the movable plate into several parts. After reaching the corresponding area, the separation frame is driven by the stepper motor to rotate the corresponding angle, and the separated river crab feed is put into each area in the separation area in turn.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] When the sliding frame moves on the walking track, the feeding box can be driven to move synchronously, so that the crab feed in the feeding box can be spread to various positions inside the crab breeding pond during the movement of the sliding frame, and the crab feed will not be unevenly distributed, resulting in the feed not being eaten, causing water pollution and affecting the health of the crabs.

[0027] By determining the number of crabs in the separated areas through the processing module, the feed box can release feed in a quantitative manner according to the number of crabs in the corresponding separated areas, and over-release will not occur. In addition, the feed can be released to multiple locations separately according to the distribution of crabs in the separated areas during the release process, ensuring that the released feed can be completely eaten by the crabs, thereby reducing the adverse effects on the water quality of crab farming. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0029] Figure 1 It is the main structure diagram of the present invention;

[0030] Figure 2 This is a structural diagram of the inner support frame of the present invention;

[0031] Figure 3 It is the walking trajectory structure diagram of the present invention;

[0032] Figure 4 This is a diagram showing the internal structure of the material holding box of the present invention;

[0033] Figure 5 It is a structural diagram of the sliding frame of the present invention;

[0034] Figure 6 For the present invention Figure 4 A magnified structural diagram of part A;

[0035] Figure 7 For the present invention Figure 4 A magnified structural diagram of part B;

[0036] In the figure: 1, outer support frame; 21, inner support frame; 22, walking track; 23, support bracket; 24, card frame; 25, first groove; 26, second groove; 27, rack; 31, material box; 32, drive motor; 33, sliding frame; 34, limit plate; 35, interlocking gear; 36, movable plate; 37, partition frame; 38, annular groove; 39, connecting shaft; 310, semi-convex ball; 311, turntable; 312, material hopper; 313, support plate. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0038] Embodiment 1:

[0039] See also Figure 1-Figure 7As shown, a crab feeding device for preventing crab diseases comprises an outer support frame 1, an inner support frame 21 is arranged inside the outer support frame 1, the size of the inner support frame 21 is the same as the size of the frame of the pond for breeding crabs, so that the inner support frame 21 can be stuck in the upper end of the crab pond, and a clamping frame 24 is installed at one end of the inner support frame 21 close to the outer support frame 1, and the inner support frame 21 divides the internal area of ​​the outer support frame 1 into four areas of the same size, and walking tracks 22 are arranged at four positions on the inner side of the outer support frame 1 corresponding to the inner side of the inner support frame 21, and the walking track 22 is spiral, so that when a feeding box 31 moves on the walking track 22, the feed for feeding crabs in the feeding box 31 can be scattered on the surface of the crab pond as the feeding box 31 moves. At each position, support brackets 23 are installed on both sides of the upper surface of the walking track 22. The support brackets 23 support the walking track 22 to make the walking track 22 more stable. First grooves 25 are provided on both sides of the outer wall of the walking track 22. A rack 27 is installed inside the first groove 25. The rack 27 and the engaging gear 35 are on the same plane, and the two are mutually engaged and driven to rotate. Second grooves 26 are provided on both sides of the upper surface of the walking track 22. The limit plate 34 is clamped in the second groove 26 so that the sliding frame 33 is not easy to deflect when the position is moved on the walking track 22. The outer wall of the walking track 22 is slidably connected with the sliding frame 33. The sliding frame 33 is arc-shaped, so that the sliding frame 33 is on the outside of the walking track 22. When sliding, it will not be restricted by the support bracket 23. A material box 31 is installed at the lower end of the sliding frame 33. A limit plate 34 is integrally formed at the positions of the second groove 26 on both sides of the inner wall of the sliding frame 33. The positions of the first groove 25 on both sides of the inner wall of the sliding frame 33 are rotatably connected with an engaging gear 35 through a connecting shaft 39. The positions of the engaging gears 35 on both sides of the upper surface of the sliding frame 33 are installed with a driving motor 32. The engaging gears 35 on both sides of the sliding frame 33 are separately controlled by the upper driving motor 32, so that the rotation speed and rotation of the two can be adjusted separately, which is convenient for walking on the outside of the walking track 22. A support plate 313 is integrally formed above the inner wall of the material box 31, and the inner side of the material box 31 slides above the corresponding support plate 313 A feeding hopper 312 is connected, and the feeding hopper 312 is hopper-shaped, so that the feed contained in the feeding hopper 312 can be gathered in the middle. A control valve is installed at the lower end of the feeding hopper 312, and the control valve is used to control the falling and closing of the feed in the feeding hopper 312. A plurality of evenly distributed telescopic springs are installed at the position corresponding to the feeding hopper 312 on the upper surface of the support plate 313. The telescopic springs support the feeding hopper 312 when the internal feed falls, so as to facilitate the detection of the weight change of the feeding hopper 312. A movable plate 36 is slidably connected to the lower surface of the feeding box 31, and a feeding hole is opened on one side of the lower surface of the movable plate 36. The size of the feeding hole is consistent with the size of the space after the partition frame 37 separates, and the upper surface area of ​​the movable plate 36 is consistent with the area of ​​the internal cross section of the feeding box 31.When the movable plate 36 moves inside the material box 31, no feed will escape from the gap between the two. Holes are provided at the positions corresponding to the connecting shaft 39 of the material box 31, the movable plate 36 and the material hopper 312. The arrangement of the holes facilitates the connecting shaft 39 to pass through the material box 31, the movable plate 36 and the material hopper 312 and extend to the bottom of the movable plate 36. The lower end of the connecting shaft 39 located below the movable plate 36 is equipped with a rotating disk 311. The outer side of the surface is integrally formed with a plurality of evenly distributed semi-convex balls 310, and the lower surface of the movable plate 36 is also integrally formed with a plurality of evenly distributed semi-convex balls 310 at the position corresponding to the semi-convex balls 310 on the rotating disk 311, so that when the rotating disk 311 rotates following the connecting shaft 39, the semi-convex balls 310 on the rotating disk 311 and the semi-convex balls 310 on the bottom surface of the movable plate 36 collide with each other, so that the movable plate 36 fluctuates up and down on the inner side of the material box 31, so that the movable plate 36 The feed is gradually evenly distributed during the shaking process. An annular groove 38 is provided on the inner wall of the material box 31 near the bottom of the support plate 313. A partition frame 37 is slidably connected to the inner wall of the material box 31 near the bottom of the annular groove 38. An electric push rod is installed at the position of the upper surface of the partition frame 37 near the annular groove 38. The lower end of the electric push rod is connected to the partition frame 37, so that when the electric push rod changes its length, it can drive the partition frame 37 to change its position inside the material box 31. A slider is installed on the upper end of the electric push rod, and the slider can slide in the annular groove 38. A stepper motor is installed at the middle position of the lower surface of the movable plate 36. A rotating hole is provided at the middle position of the movable plate 36. A disc is rotatably connected to the inner side of the rotation. The disc is connected to the output end of the stepper motor, and a cross column is integrally formed at the middle position of the upper surface of the disc. A through hole of the same shape and size is provided at the position corresponding to the cross column on the partition frame 37, that is, the partition frame 37 is sleeved on the outer side of the cross column;

[0040] In the prior art, when feeding crabs, feed is mostly fed manually, and the amount of feed varies according to the different hands, resulting in differences in the amount of feed fed to each area, and differences in the growth of crabs in different areas. In addition, the difference in the amount of feed fed by manual feeding will cause the feed in some areas to settle in the water and not be eaten by the crabs, causing water pollution. Water pollution is likely to cause health problems for the crabs.

[0041] When feeding the crabs, the driving motors 32 installed on both sides of the sliding frame 33 are started to drive the interlocking gears 35 connected to the output end to rotate. During the rotation of the interlocking gears 35, they are interlocked with the racks 27 inside the first grooves 25. The racks 27 are fixed inside the first grooves 25, so that when the interlocking gears 35 rotate, they can move along the trajectory of the first grooves 25 on the walking track 22. During the movement, the limit plates 34 are clamped inside the second grooves 26, so that when the sliding frame 33 moves on the walking track 22, it is not easy to deflect its position, so that the feeding box 31 is always in a stable state, and the crab feed inside the feeding box 31 can be evenly distributed. When the separation operation of the partition frame 37 is performed, the crab feed in the material box 31 can be discharged after the control valve at the lower end of the material hopper 312 is opened, and the crab feed in the material hopper 312 is discharged, and as the material box 31 moves on the walking track 22, the crab feed is evenly sprinkled inside the crab pond, and uneven feeding will not occur. In the process of the sliding frame 33 moving on the walking track 22, when the sliding frame 33 moves to the curved part on the walking track 22, the driving motor 32 near the inside stops rotating, so that the driving motor 32 near the outside continues to drive the engaging gear 35 at the corresponding position to rotate, so that the sliding frame 33 changes its moving direction.

[0042] Embodiment 2:

[0043] See also Figure 1-Figure 7 As shown, a control box is also provided on the upper surface of the material box 31, and a detection component is provided inside the control box. A plurality of distributed infrared cameras and infrared rangefinders are installed on the lower surface of the material box 31. The collection ends of the infrared cameras and infrared rangefinders are exposed below the water surface of the crab pond to avoid interference from light refraction.

[0044] The detection component includes an acquisition module, a processing module and an execution module;

[0045] When the material box 31 moves on the walking trajectory 22, the acquisition module can collect the moving distance data of the material box 31 on the walking trajectory 22. When the moving distance data reaches half of the total length of the walking trajectory 22, the processing module determines that the material box 31 moves to the middle position of the area separated by the inner support frame 21, and the material box 31 stops moving. The camera takes photos of the distribution of crabs in the separated area inside the crab pond. The processing module can perform grayscale processing on the taken photos, perform colorimetry comparison on the grayscale processed photos, and perform edge tracing according to the outline of the crab shell, and proportionally enlarge and reduce the crab shell edge image obtained after tracing, and save the proportionally enlarged and reduced crab shell edge image;

[0046] Then, in the grayscale processed photo, the crab position is searched according to the crab shell outline, and according to the difference in chromaticity contrast, the grayscale processed pictures at the corresponding positions of the crab shell outline are arranged from light to dark in color, and the lightest color is determined to be the uppermost layer, and the darkest color is the lowermost layer, and the number of layers is recorded, and the shell outline area of ​​the crab after growth is calculated according to the length of breeding time and the area of ​​the initial shell outline of the crab, and then the total area of ​​the crab shell outline corresponding to each layer of the grayscale processed picture is calculated to calculate the approximate number of crabs in each layer of the grayscale processed picture, and the number of crabs in each layer is summed to obtain the approximate total number of crabs in the separated area, which is recorded as number one; then the same processing operation is performed on the other three separated areas to obtain number two, number three and number four;

[0047] The total number of cultured river crabs is known. The total number of river crabs detected in the four areas is number one, number two, number three and number four respectively. Number one, number two, number three and number four are divided into a ratio, and then the number of river crabs in each separated area is determined based on the ratio and the total number.

[0048] The weighing structure arranged on the support plate 313 transmits the total weight data of the hopper 312 and the crab feed inside to the processing module in real time. The processing module can calculate the falling speed data of the crab feed according to the change of the crab feed inside the hopper 312 during the collection time, and can calculate the time required to discharge the required amount of crab feed according to the falling speed data of the crab feed, and take the closing time of the control valve at the lower end of the hopper 312 into account, so that when the control valve is closed, the amount of crab feed discharged to the bottom is more accurate.

[0049] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A feeding device for river crab feed for preventing river crab diseases, characterized in that: The invention comprises an outer support frame (1), an inner support frame (21) is arranged inside the outer support frame (1), a card frame (24) is installed at one end of the inner support frame (21) close to the outer support frame (1), the inner support frame (21) divides the inner area of ​​the outer support frame (1) into four areas of equal size, a walking track (22) is arranged at four positions inside the inner support frame (1) corresponding to the inner side of the inner support frame (21), support brackets (23) are installed on both sides of the upper surface of the walking track (22), first grooves (25) are opened on both sides of the outer wall of the walking track (22), a rack (27) is installed inside the first groove (25), second grooves (26) are opened on both sides of the upper surface of the walking track (22), the outer wall of the walking track (22) is slidably connected to a sliding frame (33), a material holding box (31) is installed at the lower end of the sliding frame (33), and the sliding frame (33) is provided with a material holding box (31). 3) a limiting plate (34) is integrally formed at the positions of the second groove (26) on both sides of the inner wall, and a chiseled gear (35) is rotatably connected to the positions of the first groove (25) on both sides of the inner wall of the sliding frame (33) via a connecting shaft (39); an annular groove (38) is formed below the inner wall of the material holding box (31) near the support plate (313), and a partition frame (37) is slidably connected to the inner wall of the material holding box (31) near the lower part of the annular groove (38). ); a driving motor (32) is installed at the positions of the engaging gear (35) on both sides of the upper surface of the sliding frame (33); a support plate (313) is integrally formed above the inner wall of the material holding box (31); a material holding hopper (312) is slidably connected to the inner side of the material holding box (31) corresponding to the upper side of the support plate (313); a movable plate (36) is slidably connected to the lower surface of the material holding box (31); a stepping motor is installed at the middle position of the lower surface of the movable plate (36); The upper surface of the material holding box (31) is also provided with a control box, and a detection component is provided inside the control box, and the detection component includes a processing module and an execution module; the processing module receives the moving distance data, the crab image data and the total weight data of the crab feed transmitted by the acquisition module, and processes the moving distance data, the crab image data and the total weight data of the crab feed, generates a control signal according to the processing result, and transmits the control signal to the execution module; the execution module receives the control signal transmitted by the processing module, and controls the partition frame (37) to rotate according to the control signal to push and rotate the crab feed inside the material holding box (31); The data processing steps of the processing module are as follows: Step 1: receiving the moving distance data of the sliding frame (33) on the walking track (22) collected by the collection module, and comparing the moving distance data with the total length data of the walking track (22), and when it is determined that the sliding frame (33) moves to the middle position on the walking track (22), generating a walking stop signal, and transmitting the walking stop signal to the execution module; Step 2: After the sliding frame (33) stops moving, grayscale processing is performed on the crab image data transmitted by the acquisition module, and chromaticity comparison is performed on the grayscale processed image. According to the chromaticity comparison, the grayscale processed image at the corresponding position of the crab shell outline is arranged from light to dark in color, and the lightest color is determined as the uppermost layer and the darkest color is determined as the lowermost layer; Step 3: Determine the shell contour area of ​​the crab in the crab pond based on the proportionally enlarged and reduced image of the crab shell edge and the size comparison of the crab shell edge on the grayscale processed image, and calculate the shell contour area of ​​the crab after growth based on the breeding time and the area of ​​the initial shell contour of the crab. Compare the determined shell contour area of ​​the crab with the calculated shell contour area of ​​the crab. If the difference between the two is within the set range, take the average of the sum of the two as the shell contour area of ​​the crab; if the difference between the two is not within the set range, determine that the collected data is incorrect and need to collect the data again; Step 4: After obtaining the crab shell contour area data, find the total area of ​​the crab shell contour corresponding to each layer of the grayscale processed image, calculate the approximate number of crabs in each layer of the grayscale processed image, and sum the number of crabs in each layer to obtain the approximate total number of crabs in the separated area, recorded as number one; then perform the same processing operation on the other three separated areas to obtain number two, number three and number four; Step 5: The total number of cultured river crabs is known. The total number of river crabs detected in the four areas is number one, number two, number three and number four respectively. Number one, number two, number three and number four are divided into approximately proportions, and then the number of river crabs in each separated area is determined according to the proportion and the total number. A feed placement signal is generated according to the number of river crabs in each separated area, and the feed placement signal is transmitted to the execution module; Step 6: The falling speed data of the crab feed can be calculated according to the change in the amount of crab feed inside the hopper (312) during the collection time, and the time required to discharge the required amount of crab feed can be calculated according to the falling speed data of the crab feed, and the closing time of the control valve at the lower end of the hopper (312) can be calculated; The operation execution steps of the execution module are as follows: Step 1: After receiving the walking stop signal, the driving motor (32) that drives the engaging gears (35) on both sides of the sliding frame (33) to rotate is controlled to stop working; Step 2: After receiving the feed delivery signal, according to the position information of the crab in the separation area in the feed delivery signal, the driving motor (32) that drives the engaging gears (35) on both sides of the sliding frame (33) to rotate is controlled to work, and the material box (31) at the lower end of the sliding frame (33) is moved to a specified position, and then the control valve at the lower end of the material hopper (312) is controlled to open, and according to the time difference between the time required to discharge a specified amount of crab feed and the valve closing time, the control valve is closed when the time to discharge the crab feed reaches the time difference; Step 3: If the crabs on the bottom of the pond gather in one area in the separation area, the crab feed on the movable plate (36) is discharged as a whole; if the crabs on the bottom of the pond are scattered in multiple areas in the separation area, after the turntable (311) shakes the crab feed on the movable plate (36) for a period of time, the electric push rod connected to the separation frame (37) is controlled to extend, and the separation frame (37) is used to separate the movable plate (36) into several parts, and after reaching the corresponding area, the separation frame (37) is driven by the stepping motor to rotate the corresponding angle, and the separated crab feed is sequentially placed in each area in the separation area.

2. A crab feeding device for preventing crab diseases according to claim 1, characterized in that: A plurality of evenly distributed telescopic springs are installed on the upper surface of the support plate (313) at a position corresponding to the material hopper (312); a material drop hole is provided on one side of the lower surface of the movable plate (36); holes are provided on the material box (31), the movable plate (36) and the material hopper (312) at positions corresponding to the connecting shaft (39); a turntable (311) is installed at the lower end of the connecting shaft (39) below the movable plate (36); a plurality of evenly distributed semi-convex balls (310) are integrally formed on the outer side of the upper surface of the turntable (311); and a plurality of evenly distributed semi-convex balls (310) are also integrally formed on the lower surface of the movable plate (36) at a position corresponding to the semi-convex balls (310) on the turntable (311).

3. A crab feeding device for preventing crab diseases according to claim 2, characterized in that: An electric push rod is installed at a position near the annular groove (38) on the upper surface of the partition frame (37), and a slider is installed on the upper end of the electric push rod. The slider can slide in the position inside the annular groove (38). A rotating hole is opened in the middle position of the movable plate (36), and a disk is connected to the inner side of the rotating plate. The disk is connected to the output end of the stepping motor, and a cross column is integrally formed at the middle position of the upper surface of the disk. A through hole of the same shape and size is opened at the position corresponding to the cross column on the partition frame (37).

4. A crab feeding device for preventing crab diseases according to claim 1, characterized in that: The lower surface of the material holding box (31) is provided with a plurality of distributed infrared cameras and infrared rangefinders, and the detection component also includes a collection module; The acquisition module collects the moving distance data of the sliding frame (33) on the walking track (22), the image data of the river crabs in the four separated areas after (21), and the change data of the total weight of the river crab feed inside the hopper (312), and transmits the collected moving distance data, river crab image data and river crab feed total weight data to the processing module.

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