A sampling detection device and method based on fish egg image recognition

Abstract

The present invention provides a sampling detection device and method based on fish egg image recognition, which relates to the field of sampling detection technology, including a sampling section, a storage section and an extraction section distributed in sequence, through which the liquid and the extracted material are controlled to flow in a directional manner between the sampling section and the storage section, an image recognition detection section is installed between the sampling section and the storage section, the image recognition detection section includes a detection channel and a detection element installed inside the detection channel, and the detection element is used to determine whether the extracted material moving in the detection channel is fish eggs; the storage section includes a first storage body with a closed design and a second storage body with a closed design, a first guide valve group is installed between the first storage body and the second storage body, and the first guide valve group is electrically connected to the detection element. The invention greatly improves the density of fish eggs stored in the storage section, and can improve the accuracy and efficiency of sampling detection.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling detection, and in particular to a sampling detection device and method based on fish egg image recognition. Background Art

[0002] In order to be able to sample and test fish eggs, some designs control the directional flow of liquid through a mesh and a negative pressure extraction device. The larger fish eggs are retained on the surface of the mesh by the mesh, which can achieve a quick judgment of the number and type of surrounding fish eggs. However, since the fish eggs are attached to the surface of the mesh, it is difficult to collect and sample the fish eggs in a centralized manner, and it is difficult to further analyze the quality and parameters of the fish eggs, and sampling and testing are limited. At the same time, most of the fish eggs attached to the surface of the mesh are in a damaged state, resulting in a loss of fish resources.

[0003] There are also some designs that can control the directional flow of fish eggs through the sampling structure, and the directionally flowing fish eggs are retained in a predetermined storage container. Through the above-mentioned structural design, large quantities of fish eggs can be sampled with little damage to the fish eggs, and the quality and parameters related to the fish eggs can be specifically analyzed, meeting more specific testing needs.

[0004] However, different water environments are more complex, especially for some wild areas with severe pollution or complex aquatic plants. Impurities in the surrounding environment will also flow into the storage container with the liquid, reducing the storage density of the storage container and also reducing the efficiency and accuracy of subsequent fish egg detection. Summary of the invention

[0005] In view of the above problems, the present invention provides a sampling detection device and method based on fish egg image recognition, which greatly improves the density of fish eggs stored in the storage segment and can improve the accuracy and efficiency of sampling detection.

[0006] To solve the above problems, the technical solution adopted by the present invention is:

[0007] A sampling detection device based on fish egg image recognition comprises a sampling section, a storage section and an extraction section which are distributed in sequence, wherein the extraction section controls the directional flow of liquid and extracted material between the sampling section and the storage section, an image recognition detection section is installed between the sampling section and the storage section, the image recognition detection section comprises a detection channel and a detection element installed inside the detection channel, and the detection element is used to judge whether the extracted material moving in the detection channel is fish eggs; the storage section comprises a first storage body with a closed design and a second storage body with a closed design, a first guide valve group is installed between the first storage body and the second storage body, and the first guide valve group is electrically connected to the detection element; wherein, when the extracted material is detected as non-fish eggs, a first control signal is sent to the first guide valve group to adjust the first storage body to be in a conducting state; when the extracted material is detected as fish eggs, a second control signal is sent to the first guide valve group to adjust the second storage body to be in a conducting state.

[0008] Preferably, the detection element is located near the sampling section, and the detection element and the first diverter valve group are also electrically connected to a central controller. When it is detected that the extracted material is fish eggs, the expected time for the fish eggs to reach the first diverter valve group is calculated based on the length of the detection channel and the flow rate in the detection channel, and the switching rate of the first diverter valve group is adjusted according to the expected time.

[0009] Preferably, the extraction section includes a negative pressure extraction pipe and a second diversion valve group connected to the negative pressure extraction pipe, the second diversion valve group is connected to two diversion pipes, the first diversion pipe is connected to the first storage body, and the second diversion pipe is connected to the second storage body, and the first diversion pipe or the second diversion pipe is controlled to be in a conducting state through the second diversion valve group.

[0010] Preferably, the second diverter valve group comprises an electrically controlled rotating control ring, the control ring is sealingly and rotatably connected to the inner wall of the second diverter valve group, a control opening is opened on the side wall of the control ring, and the two diverter pipes are both located on the moving path of the control opening.

[0011] Preferably, the first flow guide valve group comprises a flow guide shaft and a flow guide plate fixed to a side wall of the flow guide shaft, the first end of the flow guide shaft is connected to an electric control device, and the second end is fixedly connected to a control ring.

[0012] Preferably, a first elastic airbag is installed at both upper and lower ends of the guide plate, the first elastic airbag extends along the length direction of the guide plate, and a second elastic airbag connected to the first elastic airbag is installed on the side of the guide plate away from the guide shaft, and the second elastic airbag extends along the height direction of the guide plate.

[0013] Preferably, the second storage body comprises a first air deflector, a second air deflector and a storage tank which are sequentially arranged from top to bottom, the storage tank is detachably connected to the second air deflector, and a filter is installed inside the first air deflector.

[0014] Preferably, a closed air bag is installed at the upper end of the storage tank, and the closed air bag is connected to an electrically controlled air pump, and the electrically controlled air pump is electrically connected to the first guide valve group. The closed air bag has an expanded state and a contracted state, wherein the closed air bag can form a flow obstacle at the upper end of the storage tank when it is in the expanded state.

[0015] Preferably, the sampling section comprises a first sampling body and a second sampling body, the second sampling body has a trapezoidal vertical cross-section, a sampling channel is installed at the lower end of the first sampling body, and a plurality of blocking rods are installed on the inner wall of the sampling channel.

[0016] A sampling detection method based on fish egg image recognition, using the above-mentioned sampling detection device based on fish egg image recognition, comprises the following steps: S1, placing the sampling detection device based on fish egg image recognition in a predetermined water area, and controlling the sampling section to be located below the horizontal plane; S2, controlling the directional flow of liquid and extracted material between the sampling section and the storage section through the extraction section; S3, judging whether the extracted material moving in the detection channel is fish egg through the detection element; when the extracted material is detected as not fish egg, sending a first control signal to the first guide valve group to adjust the first storage body to be in a conducting state; when the extracted material is detected as fish egg, sending a second control signal to the first guide valve group to adjust the second storage body to be in a conducting state.

[0017] The beneficial effects of the present invention are:

[0018] Through the above-mentioned structural design, the image recognition method can be fully utilized to perform image detection on the extracted material in the image recognition detection section, and the fish eggs in the extracted material can be efficiently and accurately detected. In addition, the direction of diversion can be adjusted in conjunction with the first diversion valve group to control the fish eggs to enter the second storage body for centralized sampling and storage, which greatly improves the density of fish eggs stored in the storage section and can improve the accuracy and efficiency of sampling detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 For the present invention Figure 1 Schematic diagram of the top view structure.

[0021] Figure 3 For the present invention Figure 1 Schematic diagram of the main structure.

[0022] Figure 4 For the present invention Figure 1 Schematic diagram of the side structure.

[0023] Figure 5 For the present invention Figure 2 AA section structure schematic diagram.

[0024] Figure 6 For the present invention Figure 3 BB section structure schematic diagram.

[0025] Figure 7 For the present invention Figure 5 Enlarged structural diagram at C.

[0026] Figure 8 It is a schematic diagram of the internal structure of the first air guide cover of the present invention.

[0027] In the figure: 100, positioning bracket; 200, sampling section; 210, first sampling body; 211, sampling channel; 212, blocking rod; 220, second sampling body; 300, image recognition detection section; 310, detection channel; 320, detection element; 321, detection unit; 322, illumination unit; 400, storage section; 410, storage channel; 420, first storage body; 421, sealing cover; 422, first Three guide covers; 430, second storage body; 431, storage tank; 432, second guide cover; 433, first guide cover; 434, filter; 500, extraction section; 510, second guide valve group; 511, guide pipe; 512, control ring; 513, control opening; 520, negative pressure extraction pipe; 600, electric control device; 700, first guide valve group; 710, guide shaft; 720, guide plate. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] By sampling and testing fish eggs, we can conduct relevant analysis on data such as fish egg density and type in the predetermined waters, judge the water conditions in the surrounding areas, and provide data reference for fish reproduction and environmental quality in the area.

[0030] In order to be able to sample and test fish eggs, some designs control the directional flow of liquid through a mesh and a negative pressure extraction device. The larger fish eggs are retained on the surface of the mesh by the mesh, which can achieve a quick judgment of the number and type of surrounding fish eggs. However, since the fish eggs are attached to the surface of the mesh, it is difficult to collect and sample the fish eggs in a centralized manner, and it is difficult to further analyze the quality and parameters of the fish eggs, and sampling and testing are limited. At the same time, most of the fish eggs attached to the surface of the mesh are in a damaged state, resulting in a loss of fish resources.

[0031] There are also some designs that can control the directional flow of fish eggs through the sampling structure, and the directionally flowing fish eggs are retained in a predetermined storage container. Through the above-mentioned structural design, large quantities of fish eggs can be sampled, with little damage to the fish eggs, and the quality and parameters related to the fish eggs can be specifically analyzed, meeting the needs of more specific testing; however, different water environments are more complex, especially for some wild areas with serious pollution or complex aquatic plants. Impurities in the surrounding environment will also enter the storage container with the flow of liquid, reducing the storage density of the storage container, and also reducing the efficiency and accuracy of subsequent fish egg testing.

[0032] In order to solve the above problems, refer to the attached Figure 1 - Attachment Figure 8 A sampling and detection device based on fish egg image recognition includes a sampling section 200, a storage section 400 and an extraction section 500 which are distributed in sequence. The extraction section 500 controls the directional flow of liquid and extracted substances between the sampling section 200 and the storage section 400. The extracted substances here may be fish eggs or other impurities. The fish eggs are controlled to flow directional into the storage section 400 to realize centralized storage of the fish eggs.

[0033] Furthermore, an image recognition detection segment 300 is installed between the sampling segment 200 and the storage segment 400. The image recognition detection segment 300 includes a detection channel 310 and a detection element 320 installed inside the detection channel 310. The detection element 320 determines whether the extracted material moving in the detection channel 310 is fish eggs.

[0034] The detection element 320 is selected as an image recognition detection method, continuously taking clear pictures in the detection channel 310, and performing real-time analysis on the content of the pictures, and judging whether it is fish eggs based on the shape, color, transparency, texture structure and other characteristics of the material extracted in the image.

[0035] Generally speaking, live fish eggs are transparent or translucent, some of them have small black spots inside, and they are full in size, with a relatively uniform and regular appearance, and some of them have bonding structures. The above judgment can be made by training the image recognition detection section 300 in a combination of manual and computer methods, so as to make efficient judgments on fish eggs and impurities, and make high-precision judgments on fish eggs, so as to facilitate subsequent sampling and detection.

[0036] The above-mentioned detection element 320 includes a detection part 321 and an illumination part 322. The detection part 321 and the illumination part 322 here are in a long strip state and are located on the moving path of the extracted material in the detection channel 310. The illumination part 322 can provide a bright shooting environment, which is suitable for the liquid sampling environment; the detection part 321 here is located at the top to recognize and judge the image of the extracted material.

[0037] Specifically; the storage section 400 here includes a first storage body 420 of closed design and a second storage body 430 of closed design. Fish eggs are stored through the second storage body 430, and other impurities are stored through the first storage body 420; a first diversion valve group 700 is installed between the first storage body 420 and the second storage body 430, and the first diversion valve group 700 is electrically connected to the detection element 320; the diversion state of the first diversion valve group 700 is adjusted according to the detection result of the detection element 320.

[0038] When the extracted material is detected to be other than fish eggs, a first control signal is sent toward the first guide valve group 700 to adjust the first storage body 420 to be in a conducting state, and at this time, impurities other than fish eggs enter the first storage body 420 for storage; when the extracted material is detected to be fish eggs, a second control signal is sent toward the first guide valve group 700 to adjust the second storage body 430 to be in a conducting state, and during this process, the fish eggs enter the second storage body 430 for storage, and the initial sampling test of the fish eggs is completed during this process. Subsequently, the fish eggs in the second storage body 430 can be taken out, and the fish eggs in the second storage body 430 can be subsequently subjected to multiple precise tests to ensure the accuracy of the fish egg test results.

[0039] In summary, through the above-mentioned structural design, the image recognition method can be fully utilized to perform image detection on the extracted material in the image recognition detection section 300, and the fish eggs in the extracted material can be efficiently and accurately detected. In addition, the direction of the diversion can be adjusted in conjunction with the first diversion valve group 700 to control the fish eggs to enter the second storage body 430 for centralized sampling and storage, which greatly improves the density of fish eggs stored in the storage section 400 while improving the accuracy and efficiency of sampling detection.

[0040] Furthermore; the detection element 320 is located on a side close to the sampling section 200, and the detection element 320 and the first diverter valve group 700 are also electrically connected to a central controller, which receives the detection element 320 signal and controls the diversion state of the first diverter valve group 700 according to the received signal; when it is detected that the extracted material is fish eggs, the expected time for the fish eggs to reach the first diverter valve group 700 is calculated according to the length of the detection channel 310 (the length of the moving path of the extracted material) and the flow rate in the detection channel 310, and the switching rate of the first diverter valve group 700 is adjusted according to the expected time.

[0041] Through the above structural design, the diversion state of the first diversion valve group 700 can be switched before the fish eggs arrive, and finally the fish eggs are controlled to enter the second storage body 430 for centralized storage; under normal conditions, other impurities enter the first storage body 420 for separate storage.

[0042] It should also be noted that in the normal state where no fish eggs are detected, the flow rate in the detection channel 310 is controlled to be relatively high, thereby improving the efficiency of extracting the extracted material. After the fish eggs are detected, the flow rate is reduced to prevent the fish eggs from flowing too fast and accidentally entering the first storage body 420. The above-mentioned design scheme can improve the efficiency of fish egg sampling and detection while preventing the fish eggs from being mistakenly sorted into the first storage body 420.

[0043] Please refer to the attached Figure 1 , Attachment Figure 5 Specifically, the extraction section 500 includes a negative pressure extraction pipe 520 and a second diverter valve group 510 connected to the negative pressure extraction pipe 520. The negative pressure extraction pipe 520 is used to extract the liquid in the sampling section 200 and the image recognition detection section 300 in a directionally concentrated manner. The second diverter valve group 510 can adjust the area where the liquid flows in the storage section 400, and finally control the fish eggs and impurities to enter different areas.

[0044] The second diversion valve group 510 is connected to two diversion pipes 511, the first diversion pipe 511 is connected to the first storage body 420, and the second diversion pipe 511 is connected to the second storage body 430. The second diversion valve group 510 controls the first diversion pipe 511 or the second diversion pipe 511 to be in a conducting state.

[0045] Through the above structural design, only one set of second diverter valve group 510 and one set of negative pressure extraction pipe 520 need to be designed, and the extraction of two sets of proportional channels can be controlled by controlling the conduction state of the second diverter valve group 510; the internal structure is simplified and the control efficiency is also improved.

[0046] Please refer to the attached Figure 7 Specifically, the second diversion valve group 510 includes an electrically controlled rotating control ring 512, the control ring 512 is sealed and rotatably connected to the inner wall of the second diversion valve group 510, the side wall of the control ring 512 is provided with a control opening 513, and the two diversion pipes 511 are located on the moving path of the control opening 513.

[0047] According to the distribution positions of the two diversion pipes 511 and the angular position of the deflection of the control ring 512, the control opening 513 here can be designed to be one or two; the control opening 513 is opposite to the corresponding diversion pipe 511, so that the diversion pipe 511 and the inside of the second diversion valve group 510 can be controlled to be in a conductive state, and the liquid can be controlled to flow in a directional manner inside to achieve negative pressure extraction of the liquid.

[0048] Through the above-mentioned structural design, the two groups of diversion pipes 511 can be quickly switched; especially in the middle position of the switching, the diversion pipes 511 can be shielded by the side wall of the control ring 512. In this process, the liquid inside the second diversion valve group 510 is in a state of stopping flow, which greatly reduces the flow rate of fish eggs and improves the accuracy of fish egg sorting; at this time, the difficulty of controlling the first diversion valve group 700 can be reduced, and the designed lengths of the detection channel 310 and the storage channel 410 can also be compressed, thereby reducing the volume of the equipment and achieving high-precision sampling and detection.

[0049] Please refer to the attached Figure 5 , Attachment Figure 6 and attached Figure 7 The first guide valve group 700 includes a guide shaft 710 and a guide plate 720 fixed to the side wall of the guide shaft 710. The first end of the guide shaft 710 is connected to the electric control device 600, and the second end is fixedly connected to the control ring 512. The guide shaft 710 can be adjusted by the electric control device 600 to drive the guide plate 720 to rotate. The control of the guide plate 720 in different positions can adjust the flow direction of the extracted material in the storage channel 410. Figure 6 As shown, the extracted material in the storage channel 410 enters the second storage body 430 under the guidance of the guide plate 720 for collection; Figure 6 In the opposite state shown, the extracted material can flow along the other side surface of the guide plate 720 into the first storage body 420 for centralized collection.

[0050] Furthermore, by designing the second end to be fixedly connected to the control ring 512, the control ring 512 can be driven to rotate synchronously while adjusting the rotation of the guide shaft 710, thereby realizing synchronous switching of the state of the second guide valve group 510 and realizing synchronous control. Through mechanical structure control, there is no need to install electrical control equipment in a humid environment, thereby improving the accuracy and sensitivity of equipment control and the effect of sampling control.

[0051] A first elastic airbag is installed at both the upper and lower ends of the guide plate 720, and the first elastic airbag extends along the length direction of the guide plate 720. A second elastic airbag connected to the first elastic airbag is installed on the side of the guide plate 720 away from the guide shaft 710, and the second elastic airbag extends along the height direction of the guide plate 720.

[0052] After the guide plate 720 moves to the extreme position, the second elastic airbag is squeezed, and the gas in the second elastic airbag is squeezed into the first elastic airbag. At this time, the first elastic airbag is gradually in an expanded state, which can enhance the sealing effect on the upper and lower sides of the guide shaft 710, and further improve the effect of guiding the extracted material.

[0053] The second elastic airbag here is in a normally expanded state, and the first elastic airbag here is in a normally contracted state; after the guide plate 720 moves to the middle position, the first elastic airbags located on both sides are in a contracted state, which can reduce the friction during the movement of the guide plate 720 and ensure that the guide plate 720 rotates smoothly for switching.

[0054] Specifically, the second storage body 430 here includes a first air guide cover 433, a second air guide cover 432 and a storage tank 431 arranged from top to bottom. The storage tank 431 is detachably connected to the second air guide cover 432. A filter net 434 is installed inside the first air guide cover 433. The filter net 434 here is small in size and can intercept most fish eggs to prevent the fish eggs from being extracted.

[0055] During the extraction process, the guide pipe 511 connected to the first guide cover 433 is first controlled to be in a connected state, so that the fish eggs can be extracted into the second guide cover 432 for storage; after the fish eggs are extracted, the guide pipe 511 connected to the third guide cover 422 is controlled to be in a conducting state, and the second guide cover 432 is in a stopped flow state. During this process, the fish eggs in the second guide cover 432 fall freely under the action of gravity, and finally fall into the storage tank 431 for centralized collection.

[0056] The first storage body 420 here includes a sealing cover 421 and a third guide cover 422. The sealing cover 421 can collect large-sized impurities; when the guide pipe 511 is large in size, the above structure can also be omitted, so that the fish eggs can be quickly discharged.

[0057] It should be noted that the sealing cover 421 and the storage tank 431 here need to be designed to be completely sealed to ensure that the extracted material moves along a predetermined path; at the same time, it can reduce the impact on the fish eggs stored in the storage tank 431 and ensure that the storage tank 431 is in a normal and stable storage state.

[0058] Furthermore, a closed air bag is installed at the upper end of the storage tank 431, and the closed air bag is connected to an electric-controlled air pump, which is electrically connected to the first guide valve group 700. The closed air bag has an expanded state and a contracted state. When the closed air bag is in the expanded state, a flow obstacle can be formed at the upper end of the storage tank 431. The formed obstacle can block the fish eggs, further ensuring the stability of the fish eggs in the storage tank 431.

[0059] By controlling the second storage body 430 to be in a conducting state through the first guide valve group 700 and controlling the closed airbag to be in an expanded state, a flow barrier can be formed at the upper end of the storage tank 431, further reducing the impact of the external liquid flow on the fish eggs stored in the storage tank 431.

[0060] The sampling section 200 here includes a first sampling body 210 and a second sampling body 220. The vertical cross-section of the second sampling body 220 is a trapezoid. The first sampling body 210 with a trapezoidal design can centrally store fish eggs on the upper and lower sides, shorten the path of fish egg movement, and can match the detection channel 310.

[0061] A sampling channel 211 is installed at the lower end of the first sampling body 210, and a plurality of blocking rods 212 are installed on the inner wall of the sampling channel 211. The sampling channel 211 is designed at the lower end so that it can extend into the bottom of the water area to perform deep sampling of fish eggs, thereby meeting the sampling and detection requirements of different water environments. At the same time, the blocking rods 212 here can block large-sized impurities on the outside, thereby preventing large-sized impurities from entering the sampling section 200 and affecting the normal flow of fish eggs.

[0062] When large-sized impurities accumulate on the surface of the blocking rod 212, the extracted materials in the image recognition detection section 300 and the sampling section 200 can also be controlled to flow in the opposite direction and control them to flow out from the sampling channel 211, so as to blow out the large-sized impurities and realize adaptive cleaning.

[0063] Meanwhile, during the process of adaptive cleaning, it is necessary to adjust the second storage body 430 to be in a closed state to minimize the impact on the stored fish eggs.

[0064] The present invention is further described below in conjunction with the detection method.

[0065] A sampling and detection method based on fish egg image recognition, using the above-mentioned sampling and detection device based on fish egg image recognition, comprises the following steps:

[0066] S1. Place the sampling and detection device based on fish egg image recognition in a predetermined water area, and control the sampling section 200 to be below the horizontal plane; specifically, control the lower end of the sampling channel 211 to be below the horizontal plane, so that fish eggs and other extracted materials can move along a predetermined trajectory and finally enter the image recognition detection section 300 and the storage section 400 for extraction and sampling.

[0067] S2. The extraction section 500 controls the directional flow of the liquid and the extracted material between the sampling section 200 and the storage section 400. In this process, the extracted material moves along a predetermined trajectory at a predetermined rate.

[0068] S3. Determine whether the extracted material moving in the detection channel 310 is fish eggs through the detection element 320; the above-mentioned judgment method is realized based on image recognition technology, and the accuracy of screening fish eggs is improved through big data, al and repeated manual training.

[0069] When the extracted substance is detected to be other than fish eggs, a first control signal is sent to the first guide valve group 700 to adjust the first storage body 420 to be in a conducting state, so as to control impurities to pass through the first storage body 420 for storage or discharge; when the extracted substance is detected to be fish eggs, a second control signal is sent to the first guide valve group 700 to adjust the second storage body 430 to be in a conducting state; in this process, the fish eggs can be centrally stored through the second storage body 430, so as to facilitate the subsequent centralized quantitative and accurate detection of the fish eggs.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling and detection device based on fish egg image recognition, comprising a sampling section (200), a storage section (400) and an extraction section (500) which are sequentially distributed, wherein the extraction section (500) controls the directional flow of liquid and extracted material between the sampling section (200) and the storage section (400), characterized in that: An image recognition detection section (300) is installed between the sampling section (200) and the storage section (400); the image recognition detection section (300) comprises a detection channel (310) and a detection element (320) installed inside the detection channel (310); and whether the extracted material moving in the detection channel (310) is fish eggs is judged by the detection element (320); the storage section (400) comprises a first storage body (420) of a closed design and a second storage body (430) of a closed design; a first diversion valve group (700) is installed between the first storage body (420) and the second storage body (430); the first diversion valve group (700) is electrically connected to the detection element (320); When the extracted substance is detected as not being fish eggs, a first control signal is sent toward the first diversion valve group (700) to adjust the first storage body (420) to be in a conducting state; when the extracted substance is detected as being fish eggs, a second control signal is sent toward the first diversion valve group (700) to adjust the second storage body (430) to be in a conducting state; The extraction section (500) comprises a negative pressure extraction pipeline (520) and a second diversion valve group (510) in communication with the negative pressure extraction pipeline (520); the second diversion valve group (510) is in communication with two diversion pipelines (511); the first diversion pipeline (511) is in communication with the first storage body (420); the second diversion pipeline (511) is in communication with the second storage body (430); the first diversion pipeline (511) or the second diversion pipeline (511) is controlled to be in a conducting state by the second diversion valve group (510); The first flow guide valve assembly (700) comprises a flow guide rotating shaft (710) and a flow guide plate (720) fixed to a side wall of the flow guide rotating shaft (710); the first end of the flow guide rotating shaft (710) is connected to an electric control device (600).

2. The sampling and detection device based on fish egg image recognition according to claim 1 is characterized in that: The detection element (320) is located on a side close to the sampling section (200), and the detection element (320) and the first diverter valve group (700) are also electrically connected to a central controller. When it is detected that the extracted material is fish eggs, the expected time for the fish eggs to reach the first diverter valve group (700) is calculated based on the length of the detection channel (310) and the flow rate in the detection channel (310), and the switching rate of the first diverter valve group (700) is adjusted based on the expected time.

3. The sampling and detection device based on fish egg image recognition according to claim 1 is characterized in that: The second flow guide valve group (510) comprises an electrically controlled rotating control ring (512), the control ring (512) being sealingly rotatably connected to the inner wall of the second flow guide valve group (510), a control opening (513) being formed on the side wall of the control ring (512), and the two flow guide pipes (511) are both located on the moving path of the control opening (513).

4. The sampling and detection device based on fish egg image recognition according to claim 3 is characterized in that: The second end of the flow guide shaft (710) is fixedly connected to the control ring (512).

5. The sampling and detection device based on fish egg image recognition according to claim 4 is characterized in that: A first elastic airbag is installed at both upper and lower ends of the guide plate (720), the first elastic airbag extending along the length direction of the guide plate (720), and a second elastic airbag connected to the first elastic airbag is installed on the side of the guide plate (720) away from the guide shaft (710), the second elastic airbag extending along the height direction of the guide plate (720).

6. The sampling and detection device based on fish egg image recognition according to claim 1 is characterized in that: The second storage body (430) comprises a first air guide cover (433), a second air guide cover (432) and a storage tank (431) which are arranged in sequence from top to bottom; the storage tank (431) is detachably connected to the second air guide cover (432); and a filter screen (434) is installed inside the first air guide cover (433).

7. The sampling and detection device based on fish egg image recognition according to claim 6 is characterized in that: A closed air bag is installed at the upper end of the storage tank (431), and the closed air bag is connected to an electrically controlled air pump, and the electrically controlled air pump is electrically connected to the first flow guide valve group (700). The closed air bag has an expanded state and a contracted state, wherein the closed air bag can form a flow barrier at the upper end of the storage tank (431) when it is in the expanded state.

8. The sampling and detection device based on fish egg image recognition according to claim 1 is characterized in that: The sampling section (200) comprises a first sampling body (210) and a second sampling body (220); the second sampling body (220) has a trapezoidal vertical cross-section; a sampling channel (211) is installed at the lower end of the first sampling body (210); and a plurality of blocking rods (212) are installed on the inner wall of the sampling channel (211).

9. A sampling detection method based on fish egg image recognition, characterized in that: The sampling and detection device based on fish egg image recognition according to any one of claims 1 to 8 comprises the following steps: S1, placing a sampling detection device based on fish egg image recognition in a predetermined water area, and controlling the sampling section (200) to be located below the horizontal plane; S2, controlling the directional flow of the liquid and the extracted material between the sampling section (200) and the storage section (400) through the extraction section (500); S3, judging whether the extracted material moving in the detection channel (310) is fish eggs by means of the detection element (320); When the extracted material is detected to be non-fish eggs, a first control signal is sent to the first diversion valve group (700) to adjust the first storage body (420) to be in a conducting state; When the extracted material is detected to be fish eggs, a second control signal is sent to the first diversion valve group (700) to adjust the second storage body (430) to be in a conducting state.

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