Rainbow trout spawning period auxiliary judgment image acquisition device

Abstract

The utility model provides a rainbow trout spawning period auxiliary judgment image acquisition device, and relates to the technical field of aquaculture. The rainbow trout spawning period auxiliary judgment image acquisition device comprises a first pool body, a second pool body, a guide channel and a camera, the first pool body and the second pool body are arranged at an interval, a first opening is formed in the side wall, facing the second pool body, of the first pool body, the first opening is provided with a first door body, and the first door body is used for controlling the first opening to be opened or closed; a second opening is formed in the side wall, facing the first tank body, of the second tank body. A first door body is arranged at a first opening, and a second door body is arranged at a second opening; when images are collected, the first door body is opened, the first door body is closed after one parent fish enters the guide channel, then side image data of parent fish bodies in the guide channel are collected through the camera, the second door body is opened after collection is completed, the parent fish enters the second pool body, and therefore judgment work of one parent fish is completed, and the parent fish does not need to be extruded by external force in the whole process. The injury risk of the parent fish is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to an image acquisition device for assisting in the determination of rainbow trout spawning period. Background Technology

[0002] Rainbow trout are a high-quality cold-water freshwater fish with excellent flesh and rich nutrition, often referred to as "freshwater salmon." Currently, they are consumed in large quantities in the Chinese market and have high economic value. The main technical challenges in artificially breeding rainbow trout are the cultivation of broodstock and fertilization / hatching. Rainbow trout typically reach sexual maturity at two years of age. To obtain robust and fast-growing offspring, inbreeding is generally avoided, as first-mature broodstock are not used. These fish produce smaller eggs, and their offspring have weaker viability. Usually, broodstock are selected from two-year-old fish for cultivation, and artificial egg collection and fertilization begin around four years of age. The spawning period of broodstock is generally affected by factors such as nutrition, water temperature, and light; even within the same batch of broodstock, the spawning period may vary after reaching maturity. Only when sexually mature broodstock enter their optimal spawning period can sufficient quantities of high-quality eggs and sperm be collected, laying a solid foundation for subsequent artificial insemination and hatching.

[0003] Currently, aquaculture technicians can only determine whether broodstock have entered their optimal spawning period by manually observing their physical characteristics and performing manual operations. Females in their optimal spawning period have a large, soft anterior abdomen, a swollen and protruding genital pore, and a feeling of egg separation when touched; gentle pressure causes eggs to flow from the genital pore. Males, when squeezed, release a milky white semen. At this point, eggs should be collected and fertilized promptly; otherwise, they may become overripe and lose their fertilization ability. During the breeding season, male maturity should be observed every two days. These observations and operations require manually removing the broodstock from the water, turning them over, and applying external pressure. Controlling the force is difficult and can easily cause injury, resulting in varying degrees of mortality among potential broodstock each breeding season.

[0004] Rainbow trout get their name from the rainbow-colored band that runs along the lateral line of their bodies. The extent and color of this band change at different stages of their growth. As rainbow trout mature and enter their optimal spawning period, the band gradually extends towards the sides of their head and tail, becoming increasingly vibrant and intense, evolving from pink to purplish-red.

[0005] Traditional methods of selecting broodstock for artificial insemination can cause varying degrees of external damage to the fish. Operators can only rely on experience to judge, selecting broodstock by taking them out of the water and manually squeezing their abdomens. They then subjectively judge the spawning period based on their personal observations. Broodstock that are determined not to have reached the spawning period for artificial insemination may have already suffered bodily damage, and even if further sperm or egg collection is not performed, they may become infected or die during subsequent rearing. Conversely, broodstock that are determined to have reached the spawning period for artificial insemination may also become infected or die after repeated artificial squeezing due to the sperm or egg collection process. Utility Model Content

[0006] This invention provides an image acquisition device for assisting in the judgment of rainbow trout spawning period, which solves the problem that squeezing parent fish by hand can easily cause the parent fish to die in the existing technology.

[0007] This utility model provides an image acquisition device for assisting in determining the spawning period of rainbow trout, comprising:

[0008] First pool body;

[0009] The second pool body is provided with the first pool body and the second pool body being spaced apart. The first pool body has a first opening on its side wall facing the second pool body, and the first opening has a first door body for controlling the opening or closing of the first opening. The second pool body has a second opening on its side wall facing the first pool body, and the second opening has a second door body for controlling the opening or closing of the second opening.

[0010] A guide channel is provided between the first pool body and the second pool body. One end of the guide channel is connected to the first opening, and the other end of the guide channel is connected to the second opening. At least part of the guide channel is made of transparent material.

[0011] A camera is positioned on one side of the guide channel to collect side-view image data of the parent fish within the guide channel.

[0012] According to the present invention, an image acquisition device for assisting in judging the spawning period of rainbow trout is provided, wherein two first sliding grooves are provided on the inner side of the side wall of the first pool body facing the second pool body, and the two first sliding grooves are respectively arranged on both sides of the first opening, and the first door body slides up and down with the two first sliding grooves.

[0013] According to the rainbow trout spawning period auxiliary judgment image acquisition device provided by this utility model, the second pool body is provided with two second sliding grooves on the inner side of the side wall facing the first pool body. The two second sliding grooves are respectively arranged on both sides of the second opening, and the second door body slides up and down with the two second sliding grooves.

[0014] According to the image acquisition device for assisting in determining the spawning period of rainbow trout provided by this utility model, the guide channel includes:

[0015] Two side panels are spaced apart between the first pool body and the second pool body, and the two sides of each side panel are respectively connected to the first pool body and the second pool body; at least one of the two side panels is a transparent panel.

[0016] A base plate is disposed at the bottom of the two side plates, and the base plate and the two side plates form a channel connecting the first opening and the second opening.

[0017] According to the present invention, an image acquisition device for assisting in determining the spawning period of rainbow trout is provided, wherein both side plates are transparent plates, and the side plate away from the camera is provided with a white sticker.

[0018] According to the present invention, a rainbow trout spawning period auxiliary judgment image acquisition device is provided, wherein the white sticker is disposed on the side of the side plate away from the camera.

[0019] According to the rainbow trout spawning period auxiliary judgment image acquisition device provided by this utility model, it also includes:

[0020] A bracket, one end of which is connected to the first pool body and the other end of which is connected to the second pool body, and the camera is mounted on the bracket.

[0021] According to the present invention, an image acquisition device for assisting in determining the spawning period of rainbow trout is provided, wherein the camera and the bracket are detachably connected.

[0022] According to the present invention, an image acquisition device for assisting in judging the spawning period of rainbow trout is provided, wherein the upper ends of the first door and the second door are both provided with handles.

[0023] According to the present invention, a rainbow trout spawning period auxiliary judgment image acquisition device is provided, wherein the length of the guide channel is 55cm-65cm, the width of the guide channel is 13cm-18cm, and the height of the guide channel is 25cm-35cm.

[0024] The rainbow trout spawning period auxiliary judgment image acquisition device provided by this utility model has a first gate set in the first opening and a second gate set in the second opening. When acquiring images, the first gate is opened to allow a parent fish to enter the guide channel, and then the first gate is closed. The side image data of the parent fish body in the guide channel is then acquired by the camera. After the acquisition is completed, the second gate is opened to allow the parent fish to enter the second pool, thereby completing the judgment of a parent fish. The whole process does not require external force to squeeze the parent fish, which greatly reduces the risk of damage to the parent fish. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the image acquisition device for assisting in determining the spawning period of rainbow trout provided by this utility model.

[0027] Figure 2 This is a top view of the image acquisition device for assisting in determining the spawning period of rainbow trout provided by this utility model.

[0028] Figure 3 This is a structural schematic diagram of the first door body provided by this utility model.

[0029] Figure label:

[0030] 100, First pool body; 110, First door body; 120, First slide rail; 130, Handle; 200, Second pool body; 210, Second door body; 220, Second slide rail; 300, Guide channel; 310, Side plate; 320, Base plate; 400, Support; 410, Connecting rod; 420, Fixing rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0034] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] The following is combined with Figures 1-3 This invention describes the specific structure and usage of the rainbow trout spawning period auxiliary image acquisition device.

[0037] like Figure 1 and Figure 2 As shown, the rainbow trout spawning period auxiliary judgment image acquisition device includes a first pool 100, a second pool 200, a guide channel 300, and a camera (not shown). The first pool 100 and the second pool 200 are arranged at intervals. The first pool 100 has a first opening on its side wall facing the second pool 200. The first opening is provided with a first door 110, which is used to control the opening or closing of the first opening. The second pool 200 has a second opening on its side wall facing the first pool 100. The second opening is provided with a second door 210, which is used to control the opening or closing of the second opening.

[0038] A guide channel 300 is disposed between the first pool 100 and the second pool 200. One end of the guide channel 300 is connected to the first opening, and the other end of the guide channel 300 is connected to the second opening. At least part of the guide channel 300 is made of transparent material. A camera is disposed on one side of the guide channel 300 and is used to collect side image data of the parent fish body inside the guide channel 300.

[0039] The rainbow trout spawning period auxiliary judgment image acquisition device provided by this utility model has a first gate 110 set in the first opening and a second gate 210 set in the second opening. When acquiring images, the first gate 110 is opened to allow a parent fish to enter the guide channel 300, and then the first gate 110 is closed. Then, the side image data of the parent fish body in the guide channel 300 is acquired by the camera. After the acquisition is completed, the second gate 210 is opened to allow the parent fish to enter the second pool 200, thereby completing the judgment of a parent fish. The whole process does not require external force to squeeze the parent fish, which greatly reduces the risk of damage to the parent fish.

[0040] In one embodiment of this utility model, both the first pool 100 and the second pool 200 are rectangular pools. However, the shapes of the first pool 100 and the second pool 200 are not limited to this and can be determined according to actual needs. In this embodiment, the volume of the first pool 100 is equal to the volume of the second pool 200, the length of the first pool 100 and the length of the second pool 200 are both 100cm, the width of the first pool 100 and the width of the second pool 200 are both 50cm, and the height of the first pool 100 and the height of the second pool 200 are both 30cm. Of course, the volumes of the first pool 100 and the second pool 200 can also be different, depending on actual needs. In this embodiment, both the first pool 100 and the second pool 200 are made of transparent material. Specifically, both the first pool 100 and the second pool 200 are made of acrylic. The side wall thickness and bottom wall thickness of both the first pool 100 and the second pool 200 are 1cm. Of course, the side wall thickness and bottom wall thickness of the first pool 100 and the second pool 200 are not limited to this and other thicknesses can also be used.

[0041] In one embodiment of this utility model, two first sliding grooves 120 are provided on the inner side wall of the first pool body 100 facing the second pool body 200. The two first sliding grooves 120 are parallel to each other and extend in the vertical direction, and are respectively arranged on both sides of the first opening. The first door body 110 slides vertically and vertically with the two first sliding grooves 120. Specifically, one side of the first door body 110 is slidably inserted into one first sliding groove 120, and the other side of the first door body 110 is slidably inserted into the other first sliding groove 120. The first sliding grooves 120 are made of acrylic and are adhesively bonded to the side wall of the first pool body 100.

[0042] In one embodiment of this utility model, two second sliding grooves 220 are provided on the inner side wall of the second pool body 200 facing the first pool body 100. The two second sliding grooves 220 are parallel to each other and extend in the vertical direction, and are respectively arranged on both sides of the second opening. The second door body 210 slides vertically and vertically with the two second sliding grooves 220. Specifically, one side of the second door body 210 is slidably inserted into one second sliding groove 220, and the other side of the second door body 210 is slidably inserted into the other second sliding groove 220. The second sliding grooves 220 are made of acrylic and are adhesively bonded to the side wall of the second pool body 200.

[0043] In one embodiment of this utility model, such as Figure 3 As shown, both the first door body 110 and the second door body 210 are rectangular plates. Of course, the shape of the door body is not limited to this and can also be other shapes. Both the first door body 110 and the second door body 210 are made of acrylic sheets, with a thickness of 1cm, a width of 20cm, and a height of 30cm. Each of the first door body 110 and the second door body 210 has a handle 130 at its top for opening and closing.

[0044] In one embodiment of this utility model, the guide channel 300 includes two side plates 310 and a bottom plate 320. The two side plates 310 are spaced apart between the first pool body 100 and the second pool body 200, and the two side plates 310 are parallel to each other. The distance between the two side plates 310 is greater than the width of the first opening and the second opening. Two sides of each side plate 310 are respectively connected to the first pool body 100 and the second pool body 200. Specifically, as shown... Figure 1 As shown, the left side of each side plate 310 is bonded to the side wall of the second pool 200, and the right side of each side plate 310 is bonded to the side wall of the first pool 100. At least one of the two side plates 310 is a transparent plate, which facilitates the camera to collect side image data of the parent fish body in the guide channel 300.

[0045] A base plate 320 is disposed at the bottom of the two side plates 310, and the base plate 320 and the two side plates 310 form a channel connecting the first opening and the second opening. The base plate 320, the bottom plate of the first pool body 100, and the bottom plate of the second pool body 200 are in the same plane. In this embodiment, both the side plates 310 and the base plate 320 are acrylic sheets, and both the side plates 310 and the base plate 320 are connected to the pool body by an adhesive. Of course, they can also be integrally formed with the pool body.

[0046] In one embodiment of this utility model, both side panels 310 are transparent panels. The side panel 310 away from the camera is provided with a white sticker. The white sticker makes the background color of the image acquired by the camera more distinct from the color of the parent fish, making the outline of the parent fish clearer in the image information. Preferably, the white sticker is provided on the side of the side panel 310 away from the camera, that is, on the outer side of the side panel 310.

[0047] In one embodiment of this utility model, the guide channel 300 has a length of 55cm-65cm, a width of 13cm-18cm, and a height of 25cm-35cm. Preferably, the guide channel 300 has a length of 60cm, a width of 15cm, and a height of 30cm. The width of the pool is greater than the width of the guide channel 300. Using a wider pool facilitates the transfer and removal of broodstock and short-term rearing, while using a narrower guide channel 300 facilitates fixing the imaging posture of the broodstock and allows for the collection of side-view images of each broodstock individually.

[0048] In one embodiment of this invention, the camera is a high-resolution color industrial camera. The camera employs a 5-megapixel CCD digital color image sensor and integrates an OV5647 image sensor chip. The camera has a field of view of 75.7° and can achieve 1080p high-definition color image acquisition. The camera connects to a portable computer via a high-speed Ethernet interface for data transmission, control, and PoE power supply. Before image acquisition, the camera needs to be focused and fixed to ensure that the acquired image is a vertically orthophoto of a pure white background.

[0049] In one embodiment of this utility model, the rainbow trout spawning period auxiliary judgment image acquisition device further includes a bracket 400, one end of which is connected to a first pool body 100, and the other end of which is connected to a second pool body 200. A camera is mounted on the bracket 400. Specifically, as... Figure 1As shown, the support 400 includes a fixed rod 420 and two connecting rods 410. The two connecting rods 410 are parallel and spaced apart. The first end of one connecting rod 410 is glued to the side wall of the first pool body 100, and the first end of the other connecting rod 410 is glued to the side wall of the second pool body 200. The second ends of the two connecting rods 410 are respectively connected to the two ends of the fixed rod 420. The fixed rod 420 and the two connecting rods 410 are integrally formed to form a U-shaped support 400. The length of the connecting rod 410 is 30cm, the width of the connecting rod 410 is 2cm, and the thickness of the connecting rod 410 is 0.1cm. The length of the fixed rod 420 is 60cm, the width of the fixed rod 420 is 2cm, and the thickness of the fixed rod 420 is 0.1cm. The distance between the support 400 and the base plate 320 is 5cm, and the support 400 is made of aluminum alloy.

[0050] In one embodiment of this invention, a lifting rod is vertically mounted on the fixed rod 420, and the camera is fixed to the upper end of the lifting rod. The lifting rod is a linear push rod or a cylinder. The lifting rod can be manually controlled by a control device, or a controller can be electrically connected to both the lifting rod and the camera, automatically controlling the height of the lifting rod based on the image information acquired by the camera. The lifting rod automatically adjusts the camera's height to maintain the camera at the same height as the parent fish, effectively improving the accuracy of the image information.

[0051] In one embodiment of this utility model, the camera and the bracket 400 are detachably connected. Specifically, the fixing rod 420 is provided with an M6 standard bolt interface, and the camera is fixed to the fixing rod 420 by wing screws.

[0052] In one embodiment of this invention, the rainbow trout spawning period auxiliary judgment image acquisition device further includes a computer, preferably a portable computer. The computer is connected to the camera via a high-speed Ethernet interface and implements the camera-triggered photo-taking function based on the camera SDK interface functions. The computer is used to extract rainbow-colored bands from the side-view images of the parent fish acquired by the camera, uses algorithms to extract the band range and color parameters using computer vision technology, and calls relevant analytical mathematical models to obtain quantitative auxiliary judgment results on the sexual maturity and spawning period of the parent fish, and displays the judgment results on the software interface.

[0053] How to use the rainbow trout spawning period auxiliary image acquisition device of this invention:

[0054] For prospective broodstock around 4 years old, the width and length of the guide channel 300 are just right for a single broodstock to pass through and stay in, while two broodstock cannot enter the guide channel 300 simultaneously. The capacity of the first pool 100 and the second pool 200 allows for the collection of multiple broodstock in the same batch. Multiple broodstock are temporarily placed in the first pool 100 beforehand, with the first gate 110 and the second gate 210 closed. After the broodstock adapt to the environment, image data acquisition can begin. First, the first gate 110 is raised, and a small net is used to guide one broodstock through the first opening into the guide channel 300. The first gate 110 is then lowered. The broodstock inside the guide channel 300 cannot turn around and can only stay or swim forward. The camera is controlled to acquire side-view images of the parent fish. After acquisition, the second gate 210 is raised, allowing the parent fish to swim out of the guide channel 300 and enter the second pool 200 through the second opening. Then, the second gate 210 is lowered. At this point, the computer quickly identifies and analyzes the images, providing quantitative auxiliary judgment results on the parent fish's sexual maturity and spawning period. Subsequently, the parent fish can be transferred to a parent fish rearing pond (if it has not yet met the standards) or to a parent fish pond awaiting artificial insemination (if it has met the standards). Then, the above steps are repeated to begin judging the next parent fish.

[0055] This invention relates to an image acquisition device for assisting in determining the spawning period of rainbow trout. Utilizing computer vision technology, it allows for non-destructive manipulation of selected broodstock during the rainbow trout breeding season, assisting aquaculture technicians in determining whether the sexual maturity of the selected broodstock has reached the optimal spawning period. This avoids unnecessary damage to selected broodstock that have not yet reached the optimal spawning period for artificial insemination, while minimizing destructive manipulation of selected broodstock that have reached the optimal spawning period. It avoids the subjectivity and uncertainty of human experience-based judgment, reduces the risk of injury to aquaculture technicians during operation, maximizes the protection of selected broodstock, and improves the quality and quantity of artificial semen or egg collection.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An image acquisition device for assisting in determining the spawning period of rainbow trout, characterized in that, include: First pool (100); The second pool body (200) is spaced apart from the first pool body (100). The first pool body (100) has a first opening on its side wall facing the second pool body (200). The first opening has a first door (110) for controlling the opening to open or close. The second pool body (200) has a second opening on its side wall facing the first pool body (100). The second opening has a second door (210) for controlling the opening to open or close. A guide channel (300) is provided between the first pool body (100) and the second pool body (200). One end of the guide channel (300) is connected to the first opening, and the other end of the guide channel (300) is connected to the second opening. At least part of the guide channel (300) is made of transparent material. A camera is positioned on one side of the guide channel (300) to collect side image data of the parent fish within the guide channel (300).

2. The rainbow trout spawning period auxiliary judgment image acquisition device according to claim 1, characterized in that, The first pool body (100) has two first sliding grooves (120) on the inner side of the side wall facing the second pool body (200). The two first sliding grooves (120) are respectively arranged on both sides of the first opening, and the first door body (110) slides and cooperates with the two first sliding grooves (120) in a sliding manner.

3. The rainbow trout spawning period auxiliary judgment image acquisition device according to claim 1, characterized in that, The second pool body (200) has two second sliding grooves (220) on the inner side of the side wall facing the first pool body (100). The two second sliding grooves (220) are respectively arranged on both sides of the second opening, and the second door body (210) slides up and down with the two second sliding grooves (220).

4. The rainbow trout spawning period auxiliary judgment image acquisition device according to any one of claims 1 to 3, characterized in that, The guide channel (300) includes: Two side plates (310) are spaced apart between the first pool body (100) and the second pool body (200). The two sides of each side plate (310) are respectively connected to the first pool body (100) and the second pool body (200); at least one of the two side plates (310) is a transparent plate. A base plate (320) is disposed at the bottom of the two side plates (310), and the base plate (320) and the two side plates (310) form a channel connecting the first opening and the second opening.

5. The rainbow trout spawning period auxiliary judgment image acquisition device according to claim 4, characterized in that, Both side panels (310) are transparent panels, and the side panel (310) furthest from the camera is provided with a white sticker.

6. The rainbow trout spawning period auxiliary judgment image acquisition device according to claim 5, characterized in that, The white sticker is placed on the side of the side panel (310) opposite to the camera.

7. The rainbow trout spawning period auxiliary judgment image acquisition device according to any one of claims 1 to 3, characterized in that, Also includes: A bracket (400) is provided, one end of which is connected to the first pool body (100) and the other end of which is connected to the second pool body (200). The camera is mounted on the bracket (400).

8. The rainbow trout spawning period auxiliary judgment image acquisition device according to claim 7, characterized in that, The camera is detachably connected to the bracket (400).

9. The rainbow trout spawning period auxiliary judgment image acquisition device according to any one of claims 1 to 3, characterized in that, Both the first door body (110) and the second door body (210) are provided with handles (130) at their upper ends.

10. The rainbow trout spawning period auxiliary judgment image acquisition device according to any one of claims 1 to 3, characterized in that, The guide channel (300) has a length of 55cm-65cm, a width of 13cm-18cm, and a height of 25cm-35cm.

Images