Device and method for efficiently monitoring fish passing through fishway under turbid water body condition

Abstract

The invention discloses a device and method for efficiently monitoring fish passing through a fishway under a turbid water body condition, the device comprises the fishway, a grid-shaped monitoring frame is arranged in the fishway, and the monitoring frame is formed by splicing a plurality of monitoring modules and a plurality of rest modules through connecting modules; fish can pass through the monitoring frame to enter the fishway outlet only when passing through the monitoring module from the fishway inlet. The monitoring module senses a fish body through a wireless sonar probe and monitors fish body information through an identification camera with light supplement, an inlet and an outlet of the monitoring module are each provided with a box door capable of being opened and closed, the box door of the inlet can move towards the box door of the outlet, and after the fish body enters the monitoring module, the box doors are closed to form a closed cavity; the rest module is used for resting fishes which do not enter the monitoring module; a purification chamber is arranged on one side of the fishway, a purification module is arranged in the purification chamber and used for improving water visibility, a water inlet assembly of the monitoring module is connected with a purification module water outlet, and a water outlet assembly of the monitoring module is connected with a purification module water inlet, so that the recognition rate is increased, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of fish passage facilities, and in particular to a device and method for efficiently monitoring fish passing through a fishway under turbid water conditions. Background Art

[0002] Humans have built dams and other river-blocking structures, disrupting river connectivity and blocking fish migration upstream to spawn. This has led to a sharp decline in fish stocks and a significant impact on river ecosystems. To address this issue, fishways have been built to help fish pass through dams and other river-blocking structures. To understand the number and species of fish passing through these fishways, it is necessary to monitor and count migrating fish using monitoring systems. This can be used to measure the ecological benefits of fishways and provide a reference for future fishway optimization. However, existing technologies are only suitable for rivers with low sediment content and have low monitoring efficiency. The main problems with this approach are: 1. The water in most natural rivers is turbid, making it difficult to effectively monitor migratory fish using cameras; 2. Migratory fish tend to swim back and forth in the fishway, which is not conducive to subsequent statistical analysis of fish; 3. The monitoring efficiency of most monitoring systems is low, which is not conducive to statistical analysis of the number and species of fish. Summary of the Invention

[0003] The present invention provides a device and method for efficiently monitoring fish passing through a fishway under turbid water conditions, which solves the above-mentioned problems.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A device for efficiently monitoring fish passing through a fishway in turbid water conditions comprises a fishway with a grid-like monitoring frame provided therein. The monitoring frame is composed of a plurality of monitoring modules and a plurality of rest modules connected by connecting modules. Fish can only pass through the monitoring modules at the fishway entrance and then through the monitoring frame to enter the fishway exit. The monitoring module senses fish through a wireless sonar probe and monitors fish information through an identification camera with fill light. The inlet and outlet of the monitoring module are both equipped with openable and closable doors, and the inlet door can move toward the outlet door. After the fish enters the monitoring module, the door closes to form a closed cavity. The rest module is used for resting fish that have not entered the monitoring module; A purification room is provided on one side of the fishway, and a purification module is provided in the purification room to improve water visibility. The water inlet component of the monitoring module is connected to the water outlet of the purification module, and the water outlet component of the monitoring module is connected to the water inlet of the purification module.

[0005] Preferably, the monitoring module includes a fish passage room, and the rest module includes a fish resting room. The fish passage room and the fish resting room are boxes of the same shape, and adjacent boxes are connected by connecting modules to form a grid-like monitoring frame perpendicular to the fishway.

[0006] As a more preferred embodiment, the connecting module includes a snap-in groove and a snap-in block corresponding to the snap-in groove, and the snap-in groove and the snap-in block are both arranged on the side of the box body close to the fishway exit, the top and right side of the fish pond room and the resting fish room are both provided with snap-in blocks, and the bottom and left side of the fish pond room and the resting fish room are both provided with snap-in grooves, when the box body is spliced with the adjacent box body along the water flow direction of the fishway, the snap-in blocks cooperate with the corresponding snap-in grooves to form a snap connection.

[0007] Furthermore, a resting trough parallel to the water flow direction of the fishway is provided in the fish resting room, and the opening of the resting trough faces the side of the fishway entrance.

[0008] Furthermore, the fish pond chamber is provided with a through hole parallel to the water flow direction of the fishway, the through hole and the fish pond chamber cooperate to form a cavity, the top of the cavity is embedded with an identification camera, the bottom of the cavity is embedded with a wireless sonar probe, the through hole entrance is provided with an openable and closable front door assembly, the through hole outlet is provided with an openable and closable rear door assembly, and the front door assembly forms a relative displacement along the axial direction of the through hole with the rear door assembly through a moving assembly.

[0009] Specifically, the front door assembly and the rear door assembly have the same structure; The front door assembly includes two outward-opening front door panels arranged at the entrance of the through hole. The height of the front door panels is consistent with that of the through hole. A first rotating shaft is provided on each vertical side of the front door panels close to the inner wall of the through hole. The top of the first rotating shaft is rotatably connected to the corresponding top slider through a first bearing. The bottom of the first rotating shaft is rotatably connected to the corresponding bottom slider through a first bearing. A first waterproof micro motor is provided on each bottom slider. The output shaft of the first waterproof micro motor is inserted into the slider and meshes with the first driven gear on the corresponding first rotating shaft through a first driving gear. The sliders are respectively embedded in the four corners of the through hole, and the sliders are symmetrical with each other about the middle axis of the through hole. The rear door assembly includes two outward-opening rear door panels arranged at the exit of the through hole, the height of the rear door panels is consistent with that of the through hole, and a second rotating shaft is provided on each vertical side of the rear door panel close to the inner wall of the through hole. The top of the second rotating shaft is rotatably connected to the corresponding top fixed block through a second bearing, and the bottom of the second rotating shaft is rotatably connected to the corresponding bottom fixed block through a second bearing. A second waterproof micro motor is provided on each bottom fixed block, and the output shaft of the second waterproof micro motor is inserted into the fixed block and meshed with the second driven gear on the corresponding second rotating shaft through the second driving gear. The fixed block corresponds to the slider one by one, and the fixed block and the corresponding slider are both formed to move back and forth along the direction of water flow through the corresponding moving assembly; Both the fixed block and the slider are hollow structures.

[0010] More specifically, the moving components all include a slide groove arranged along the axial direction of the through hole, the slide groove corresponds to the slider one by one, the fixed block is fixedly embedded in the corresponding slide groove near the end of the through hole outlet, the slider is embedded in the corresponding slide groove to form a limited sliding, and a telescopic device is provided between the slider and the corresponding fixed block.

[0011] In detail, a water inlet assembly is provided at the top of the fish pond chamber, and a water outlet assembly is provided at the bottom of the fish pond chamber. The water inlet assembly and the water outlet assembly have the same structure, and the lowest point of the water inlet assembly is higher than the highest point of the through hole of the corresponding fish pond chamber, and the highest point of the water outlet assembly is lower than the lowest point of the through hole of the corresponding fish pond chamber; The water inlet assembly includes a water inlet pipe, the outlet end of which penetrates the inner wall of the fish pond chamber from the front top of the fish pond chamber and is connected to the top of the fish pond chamber. The water inlet end of the water inlet pipe is connected to the water inlet joint through the electric water inlet valve, and the water inlet joint is connected to the water outlet of the purification module; The water outlet assembly includes a water outlet pipe. The water inlet end of the water outlet pipe penetrates the inner wall of the fish pond chamber from the front bottom of the fish pond chamber and is connected to the bottom of the fish pond chamber. The water outlet end of the water outlet pipe is connected to a water outlet joint through an electric water outlet valve, and the water outlet joints are all connected to the water inlet of the purification module.

[0012] In more detail, the purification module includes a water outlet branch corresponding to the water inlet joint and a water inlet branch corresponding to the water outlet joint, the water inlet joints of each row of monitoring modules are connected to the same horizontally arranged water outlet branch, and the water outlet joints of each row of monitoring modules are connected to the same horizontally arranged water inlet branch; All water inlet branches are collected at the water inlet end of the water inlet main pipe. The water outlet end of the water inlet main pipe is connected to the water inlet end of the overflow tank through the water inlet pump. The water outlet end of the overflow tank is connected to the top of the clean water tank through the overflow pipe. The water inlet end of the clean water tank is connected to the external clean water source through the external clean water pipe. The water outlet end of the clean water tank is connected to the water inlet end of the water outlet main pipe through the water outlet pump. All water outlet branches are collected at the water outlet end of the water outlet main pipe.

[0013] A method for efficiently monitoring fish passing through a fishway under turbid water conditions, using the above-mentioned device for efficiently monitoring fish passing through a fishway under turbid water conditions to identify and monitor fish passing through the fishway, comprising the following steps: Entry: Fish swim into the fishway and are stopped at the entrance by the grid-like monitoring frame. They undergo different processes depending on the module they enter. Rest: When the fish enters the resting room of the rest module, it rests and cannot pass through the fishway; Monitoring: When a fish enters the fish pond chamber of the monitoring module, the wireless sonar probe senses the fish and controls the external computer to execute the following processes in sequence; Cavity closure: The front door assembly is closed to form a closed cavity; Water change: First, open the water outlet component, and guide the low-visibility sewage into the overflow tank through the purification module. The drainage situation is monitored by the identification camera. After the drainage is completed, close the water outlet component and open the water inlet component. The overflow clear liquid and the water mixed with the external clean water source to improve visibility are introduced into the cavity. The drainage situation is monitored by the identification camera. After the drainage is completed, close the water inlet component. Identification: The camera identifies the fish in the cavity and feeds the fish data to an external computer for processing and storage; Driving fish out: After identification is completed, the rear door assembly is opened first, and the closed front door assembly is moved toward the rear door assembly through the moving assembly to form a push plate to drive the fish out of the cavity. The fish body is sensed by the wireless sonar probe until the fish body completely enters the fishway exit from the cavity. Reset: When the wireless sonar probe senses that the fish has completely entered the fishway exit, the rear door assembly is closed, and the closed front door assembly is moved away from the rear door assembly to the initial position by moving the assembly, and then the front door assembly is opened and waits for the next "monitoring" process to run.

[0014] Beneficial effects of the present invention: To address the problem of insufficient water pressure, the present invention introduces an auxiliary pump operation status decision model. By monitoring the water pressure of the water supply network in real time, it determines whether the auxiliary pump needs to be started and adjusts the pump operation status as needed to ensure that pressurization is carried out when the water pressure is insufficient and the pump is stopped when the water pressure is sufficient, thereby maintaining efficient operation. At the same time, the improved non-dominated sorting whale optimization algorithm was used to optimize the system layout, further improving the overall operational efficiency of the hydropower station's technical water supply network, reducing pipe wear, and ensuring the stability and durability of the heat dissipation system. The following improvements have also been introduced: 1. The monitoring device is modularized according to its functions, which can be adjusted according to actual conditions. It is easy to use and has improved applicability. When the modular device is damaged or needs maintenance, only the damaged module needs to be replaced without the need to install or disassemble the entire device. 2. The entire process is carried out separately, and each module operates independently, which can monitor multiple fish at the same time and ensure the comprehensive monitoring of fish entering the fishway. Only monitored fish can pass through the fishway; 3. Replace the water in the cavity through the purification module to improve visibility, avoid the camera being unable to recognize effective images due to excessive turbidity of the water, and improve the accuracy of monitoring; 4. Ensure the one-way passage of fish and prevent fish migration from affecting the monitoring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a top view of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the main three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the connection of various modules of the present invention; Figure 4 is an enlarged schematic diagram of the rest module of the present invention; Figure 5 is an enlarged schematic diagram of a top view of the monitoring module of the present invention at the initial stage of monitoring; Figure 6 is an enlarged schematic diagram of the upward viewing angle of the monitoring module of the present invention at the initial stage of monitoring; Figure 7 is an enlarged schematic diagram of the monitoring module of the present invention when the cavity is closed; Figure 8 It is an enlarged schematic diagram of the monitoring module of the present invention when driving fish; Figure 9 is a schematic diagram of the connection of the mobile components of the present invention; Figure 10 This is an enlarged schematic diagram of the bottom connection of the front door panel (rear door panel) of the present invention; Figure 11 This is an enlarged schematic diagram of the top connection of the front door panel (rear door panel) of the present invention; In the picture: 1. Fishway; 2. Cleanroom; 3. Monitoring module; 301. Fish pond room; 302. Wireless sonar probe; 303. Identification camera; 304, front door assembly; 3041, front door panel; 3042, first rotating shaft; 3043, first bearing; 3044, slider; 3045, first driven gear; 3046, first driving gear; 3047, first waterproof micromotor; 305, rear door assembly; 3051, rear door panel; 3052, second rotating shaft; 3053, second bearing; 3054, fixing block; 3055, second driven gear; 3056, second driving gear; 3057, second waterproof micromotor; 306, moving assembly; 3061, slide; 3062, telescopic device; 307, water inlet assembly; 3071, water inlet pipe; 3072, electric water inlet valve; 3073, water inlet connector; 308, water outlet assembly; 3081, water outlet pipe; 3082, electric water outlet valve; 3083, water outlet connector; 4. Rest module; 401, rest fish room; 5. Connection module; 501. Card slot; 502. Card block; 6. Purification module; 601. Water inlet manifold; 602. Water inlet main; 603. Water inlet pump; 604. Overflow tank; 605. Overflow pipe; 606. Clear water tank; 607. External clean water pipe; 608. Water outlet pump; 609. Water outlet main; 610. Water outlet manifold; 7. Mounting bracket. DETAILED DESCRIPTION

[0016] As follows, embodiments are further described with reference to the accompanying drawings.

[0017] like Figures 1 to 11 As shown in FIG. 1 , as a preferred embodiment 1, a device for efficiently monitoring fish passing through a fishway in turbid water conditions includes a fishway 1, wherein a grid-shaped monitoring frame is provided in the fishway 1. The monitoring frame is composed of a plurality of monitoring modules 3 and a plurality of rest modules 4 connected by a connecting module 5. Fish can only pass through the monitoring modules 3 at the entrance of the fishway 1 and then pass through the monitoring frame to enter the exit of the fishway 1. The monitoring module 3 senses the fish body through the wireless sonar probe 302 and monitors the fish body information through the identification camera 303 with fill light. The inlet and outlet of the monitoring module 3 are both provided with openable and closable doors, and the inlet door can move toward the outlet door. After the fish enters the monitoring module 3, the door closes to form a closed cavity; The rest module 4 is used for resting fish that have not entered the monitoring module 3; A purification chamber 2 is provided on one side of the fishway 1, and a purification module 6 is provided in the purification chamber 2 for improving water visibility. The water inlet component 307 of the monitoring module 3 is connected to the water outlet of the purification module 6, and the water outlet component 308 of the monitoring module 3 is connected to the water inlet of the purification module 6.

[0018] Example 1 provides a modular installation method, which transforms the monitoring frame into a grid-like splicing structure containing rest modules 4 and monitoring modules 3. The splicing order and arrangement number of each module can be selected according to actual needs to splice them into a complete grid-like monitoring frame; When the fish enters the rest module 4, the fish can rest in the module but cannot pass through, in order to save the fish's energy, so that the fish that pass through can be accurately registered; In the initial state of the monitoring module 3, the inlet door is open and the outlet door is closed. When the fish enters the monitoring module 3, the inlet door is closed, and the low-visibility water in the monitoring module 3 is replaced by the purification module 6, and high-visibility water is injected into the module, and the fish body information is monitored by the identification camera 303 with fill light. After the monitoring is completed, the outlet door is opened, and the inlet door moves toward the outlet door to push the fish out, completing the fish driving and allowing the fish to pass through the fishway 1. Then the initial state is restored and the next monitoring is started. The use of the above device has the following advantages: 1. The monitoring device is modularized according to its functions, which can be adjusted according to actual conditions. It is easy to use and has improved applicability. When the modular device is damaged or needs maintenance, only the damaged module needs to be replaced without the need to reinstall the entire device. 2. The entire process is carried out separately, and each module operates independently, which can monitor multiple fish at the same time and ensure the comprehensive monitoring of fish entering Fishway 1. Only monitored fish can pass through Fishway 1; 3. The water in the cavity is replaced by the purification module 6 to improve visibility, avoid the camera being unable to recognize effective images due to excessive turbidity of the water, and improve the accuracy of monitoring; 4. Ensure the one-way passage of fish and prevent fish migration from affecting the monitoring process.

[0019] As a preferred embodiment 2, the monitoring module 3 includes a fish pond room 301, and the rest module 4 includes a fish resting room 401. The fish pond room 301 and the fish resting room 401 are boxes of the same shape, and adjacent boxes are spliced by connecting modules 5 to form a grid-like monitoring frame perpendicular to the fishway 1.

[0020] Example 2 defines the shape of the fish pond room 301 and the fish resting room 401, further ensuring the interchangeability between modules. They can be installed and replaced according to actual conditions, arranged according to certain rules and arrangements, or more fish pond rooms 301 can be arranged in places with more fish according to the distribution of fish to ensure applicability.

[0021] As a preferred embodiment 3, the connecting module 5 includes a snap-in groove 501 and a snap-in block 502 corresponding to the snap-in groove 501, and the snap-in groove 501 and the snap-in block 502 are both arranged on the side of the box body close to the exit of the fishway 1, and the top and right side of the fish pond chamber 301 and the resting fish chamber 401 are both provided with snap-in blocks 502, and the bottom and left side of the fish pond chamber 301 and the resting fish chamber 401 are both provided with snap-in grooves 501. When the box body is spliced with the adjacent box body along the water flow direction of the fishway 1, the snap-in block 502 cooperates with the corresponding snap-in groove 501 to form a snap connection.

[0022] Example 3 limits the style of the connection module 5. This arrangement can improve the bearing strength when facing the impact of water flow in the fishway 1, so that the clamping direction is consistent with the water flow direction, thereby improving the stability of the installation. Secondly, it is also convenient for replacement and installation. It is only necessary to align the box body on the adjacent box body according to the water flow direction and slide it in to achieve docking installation. Applying force in the direction of water flow will cause the clamping groove 501 to clamp the ground cover on the clamping block 502, ensuring the stability of the fixation and facilitating installation and disassembly.

[0023] As a preferred embodiment 4, a resting groove parallel to the water flow direction of the fishway 1 is provided in the resting fish room 401, and the resting groove is facing the entrance side of the fishway 1.

[0024] Fish can enter the tank from the entrance of fishway 1 to rest, which saves energy for the fish and prevents the fish from passing through the monitoring frame, so that all fish will be monitored, ensuring the comprehensiveness of the monitoring and preventing the fish that have passed through from migrating and being monitored repeatedly.

[0025] As a preferred embodiment 5, a through hole parallel to the water flow direction of the fishway 1 is provided in the fish pond chamber 301, and the through hole and the fish pond chamber 301 cooperate to form a cavity, an identification camera 303 is embedded in the top of the cavity, and a wireless sonar probe 302 is embedded in the bottom of the cavity, and an openable and closable front door assembly 304 is provided at the entrance of the through hole, and an openable and closable rear door assembly 305 is provided at the outlet of the through hole. The front door assembly 304 forms a relative displacement with the rear door assembly 305 along the axial direction of the through hole through the moving assembly 306.

[0026] As a more preferred embodiment, based on Example 2, Example 5 can be further optimized so that the through hole and the resting groove have the same size, so that the two modules can be alternated at any time. After the outlet of the through hole is blocked, the through hole is converted into a resting groove, and by limiting the installation of components in the through hole, it is possible to switch between the monitoring module 3 and the resting module 4. The through hole + installed component is the monitoring module 3, and the resting groove + no installed component is the resting module 4, further improving applicability.

[0027] As a preferred embodiment 6, the front door assembly 304 and the rear door assembly 305 have the same structure; The front door assembly 304 includes two outward-opening front door panels 3041 arranged at the entrance of the through hole. The height of the front door panels 3041 is consistent with that of the through hole. A first rotating shaft 3042 is provided on each vertical side of the front door panels 3041 near the inner wall of the through hole. The top of the first rotating shaft 3042 is rotatably connected to the corresponding top slider 3044 through a first bearing 3043. The bottom of the first rotating shaft 3042 is rotatably connected to the corresponding bottom slider 3044 through a first bearing 3043. The bottom sliders 3044 are each provided with a first waterproof micro motor 3047. The output shaft of the first waterproof micro motor 3047 is inserted into the slider 3044 and meshes with the first driven gear 3045 on the corresponding first rotating shaft 3042 through a first driving gear 3046. The sliders 3044 are respectively embedded in the four corners of the through hole, and the sliders 3044 are symmetrical with each other about the middle axis of the through hole. The first waterproof micro motor 3047 provides driving force. When the first waterproof micro motor 3047 rotates, the first driving gear 3046 engages with the first driven gear 3045 to drive the first rotating shaft 3042 to rotate synchronously, causing the front door panel 3041 between the sliders 3044 to rotate synchronously. The door is opened and closed by controlling the forward and reverse rotation of the first waterproof micro motor 3047. The first waterproof micro motor 3047 rotates synchronously but in opposite directions. The rear door assembly 305 includes two outward-opening rear door panels 3051 at the exit of the through hole. The height of the rear door panels 3051 is consistent with that of the through hole. A second shaft 3052 is provided on each vertical side of the rear door panels 3051 close to the inner wall of the through hole. The top of the second shaft 3052 is rotatably connected to the corresponding top fixed block 3054 through a second bearing 3053. The bottom of the second shaft 3052 is rotatably connected to the corresponding bottom fixed block 3054 through a second bearing 3053. The bottom fixed block 305 4 are each provided with a second waterproof micro motor 3057. The output shaft of the second waterproof micro motor 3057 is inserted into the fixed block 3054 and meshes with the second driven gear 3055 on the corresponding second rotating shaft 3052 through the second driving gear 3056. The fixed block 3054 and the slider 3044 correspond one to one, which facilitates the arrangement of the subsequent moving assembly 306. The fixed block 3054 and the corresponding slider 3044 are both moved back and forth along the direction of water flow through the corresponding moving assembly 306. The second waterproof micro motor 3057 provides driving force. When the second waterproof micro motor 3057 rotates, the second driving gear 3056 and the second driven gear 3055 engage to drive the second rotating shaft 3052 to rotate synchronously, causing the rear door panel 3051 between the fixed blocks 3054 to rotate synchronously. The second waterproof micro motor 3057 is controlled by controlling the forward and reverse rotation of the second waterproof micro motor 3057 to control the opening and closing of the door. The second waterproof micro motor 3057 rotates synchronously in opposite directions. The fixed block 3054 and the sliding block 3044 are both hollow structures, which facilitates the arrangement of gear transmission parts, bearings and rotating shafts.

[0028] When the front door assembly 304 and the rear door assembly 305 are both closed, the cavity is relatively closed. By controlling the water replacement speed, the water in the cavity can be replaced more quickly, with the aim of improving visibility. Even if water seeps in, there is no need to worry about visibility becoming too low. At the same time, the fish may lie on its side during the replacement process, which can provide an angle for identification and further ensure the accuracy of monitoring.

[0029] As a preferred embodiment 7, the movable components 306 all include a slide groove 3061 arranged along the axial direction of the through hole. The slide groove 3061 corresponds one-to-one with the slider 3044. The fixed block 3054 is fixedly embedded in the corresponding slide groove 3061 near the end of the through hole outlet. The slider 3044 is embedded in the corresponding slide groove 3061 to form a limited sliding state, and a telescopic device 3062 is provided between the slider 3044 and the corresponding fixed block 3054. The movable components 306 move synchronously.

[0030] When the telescopic device 3062 contracts, the slider 3044 slides along the corresponding slide groove 3061, so that the slider 3044 and the fixed block 3054 are close to each other, thereby moving the closed front door toward the through hole outlet to drive the fish away; When the telescopic device 3062 is extended, the slider 3044 slides along the corresponding slide groove 3061, causing the slider 3044 to move away from the fixed block 3054, thereby moving the closed front door toward the through hole as before, returning to the initial position and stopping, and then opening the front door to wait for the next fish to enter; Preferably, the telescopic device 3062 can use an electric telescopic rod to facilitate arrangement and control.

[0031] As a preferred embodiment 8, a water inlet assembly 307 is provided at the top of the fish pond chamber 301, and a water outlet assembly 308 is provided at the bottom of the fish pond chamber 301. The water inlet assembly 307 and the water outlet assembly 308 have the same structure, and the lowest point of the water inlet assembly 307 is higher than the highest point of the through hole corresponding to the fish pond chamber 301, and the highest point of the water outlet assembly 308 is lower than the lowest point of the through hole corresponding to the fish pond chamber 301; The water inlet assembly 307 includes a water inlet pipe 3071. The outlet end of the water inlet pipe 3071 passes through the inner wall of the fish pond chamber 301 from the front top of the fish pond chamber 301 and is connected to the top of the fish pond chamber 301. The water inlet end of the water inlet pipe 3071 is connected to the water inlet connector 3073 through the electric water inlet valve 3072. The water inlet connector 3073 is connected to the water outlet of the purification module 6 to ensure the entry of clean water and facilitate control. The water outlet assembly 308 includes a water outlet pipe 3081. The water inlet end of the water outlet pipe 3081 passes through the inner wall of the fish pond chamber 301 from the front bottom of the fish pond chamber 301 and is connected to the bottom of the fish pond chamber 301. The water outlet end of the water outlet pipe 3081 is connected to the water outlet joint 3083 through the electric water outlet valve 3082. The water outlet joint 3083 is connected to the water inlet of the purification module 6 to ensure the discharge of initial sewage and facilitate control.

[0032] As a preferred embodiment 9, the purification module 6 includes a water outlet manifold 610 corresponding to the water inlet connector 3073 and a water inlet manifold 601 corresponding to the water outlet connector 3083. The water inlet connector 3073 of each row of monitoring modules 3 is connected to the same horizontally arranged water outlet manifold 610, and the water outlet connector 3083 of each row of monitoring modules 3 is connected to the same horizontally arranged water inlet manifold 601. This does not conflict with the closure of the front door, ensuring the flow of water in and out, and also avoiding the formation of a grid, facilitating the entry of fish and saving installation space. All water inlet branches 601 are collected at the water inlet end of the water inlet main pipe 602. The water outlet end of the water inlet main pipe 602 is connected to the water inlet end of the overflow tank 604 through the water inlet pump 603. The water outlet end of the overflow tank 604 is connected to the top of the clear water tank 606 through the overflow pipe 605. The water inlet end of the clear water tank 606 is connected to the external clean water source through the external clean water pipe 607. The water outlet end of the clear water tank 606 is connected to the water inlet end of the water outlet main pipe 609 through the water outlet pump 608. All water outlet branches 610 are collected at the water outlet end of the water outlet main pipe 609.

[0033] Water with low visibility flows into the water inlet main pipe 602 through the water inlet manifold 601, and enters the overflow tank 604 from the inlet at the bottom of the overflow tank 604 driven by the water inlet pump 603 for sedimentation. The upper clear liquid enters the clean water tank 606 through the overflow pipe 605 for standby use. By observing the clarity and depth in the clean water tank 606, it is decided whether to introduce clean water from the external clean water pipe 607 to improve visibility. When the clarity is not good or the depth is too low to be replaced, clean water is introduced through the external clean water pipe 607 for mixing. Water with high visibility is drained to the water outlet main pipe 609 through the water outlet pump 608, and is drained to each cavity that needs to replace the water source through each water outlet manifold 610 to improve the visibility of identification.

[0034] A sewage pipe is provided at the bottom of the overflow tank 604 to communicate with the outside world, and is used to discharge the dirt settled at the bottom after a period of use.

[0035] As a preferred embodiment 10, the water inlet manifolds 601 are all provided with interfaces corresponding to the module boxes. When the module is the monitoring module 3, the interface of the water inlet manifold 601 is connected to the water outlet connector 3083 of the corresponding monitoring module 3, while the interface of the water inlet manifold 601 corresponding to the rest module 4 is sealed with a plug to prevent water leakage. The water outlet manifolds 610 are all provided with interfaces corresponding to the module housings. When the module is the monitoring module 3, the interface of the water outlet manifold 610 is connected to the water inlet connector 3073 of the corresponding monitoring module 3, while the interface of the water outlet manifold 610 corresponding to the rest module 4 is sealed with a plug to prevent water leakage. Ensure sewage replacement and further strengthen modular installation to ensure that the installation position of each module can be used reasonably regardless of whether it is installing the rest module 4 or the monitoring module 3.

[0036] As a preferred embodiment 11, the monitoring frame is composed of several monitoring modules 3 and several rest modules 4 spliced together by a connecting module 5, and the outer periphery of the monitoring frame is embedded and clamped in a U-shaped mounting frame 7 through the connecting module 5. The mounting frame 7 is embedded and placed in the fishway 1. By hanging the mounting frame 7, the monitoring frame as a whole can be taken out or installed, which is convenient for installation.

[0037] As a preferred embodiment 12, a fish-driving device can be arranged in the rest module 4 and started regularly to prevent fish from staying in the rest module 4 all the time.

[0038] As a preferred embodiment 13, the purification chamber 2 is provided with stairs to facilitate personnel to go down and observe the condition of the water body.

[0039] As a preferred embodiment 14, a method for efficiently monitoring fish passing through a fishway under turbid water conditions, using the above-mentioned device for efficiently monitoring fish passing through a fishway under turbid water conditions to identify and monitor fish passing through a fishway 1, includes the following steps: Entry: Fish swim into fishway 1 and are stopped at the entrance of fishway 1 by the grid-shaped monitoring frame. Different processes are carried out according to the module they enter. Rest: When the fish enters the resting fish room 401 of the resting module 4, it rests and cannot pass through the fishway 1; Monitoring: When a fish enters the fish pond chamber 301 of the monitoring module 3, the wireless sonar probe 302 senses the fish body and controls the external computer to execute the following processes in sequence; Cavity closed: the front door assembly 304 is closed to form a closed cavity; Water change: first open the water outlet assembly 308, and guide the sewage with low visibility into the overflow tank 604 through the purification module 6. The drainage situation is monitored by the recognition camera 303. After the drainage is completed, close the water outlet assembly 308, and open the water inlet assembly 307 to guide the overflow clear liquid and the water mixed with the external clean water source to improve visibility into the cavity. The drainage situation is monitored by the recognition camera 303. After the drainage is completed, close the water inlet assembly 307. When the front door assembly 304 and the rear door assembly 305 are both closed, the cavity is relatively closed. By controlling the water change speed, the water in the cavity can be replaced quickly, the purpose is to improve visibility. Even if water seeps in, there is no need to worry about visibility becoming too low. At the same time, the fish may lie on its side during the replacement process, and lying on its side can also provide an angle for identification, further ensuring the accuracy of monitoring. Identification: The identification camera 303 identifies the information of the fish in the cavity, including its species and growth data, and feeds the fish information data to an external computer for processing and storage; Driving fish: After identification is completed, the rear door assembly 305 is opened first, and the closed front door assembly 304 is moved toward the rear door assembly 305 by the moving assembly 306 to form a push plate to drive the fish out of the cavity. The fish body is sensed by the wireless sonar probe 302 until the fish body completely enters the exit end of the fishway 1 from the cavity; Reset: When the wireless sonar probe 302 senses that the fish has completely entered the exit of the fishway 1, the rear door assembly 305 is closed, and the closed front door assembly 304 is moved away from the rear door assembly 305 to the initial position through the moving assembly 306, and then the front door assembly 304 is opened, waiting for the next "monitoring" process to run.

Claims

1. A device for efficiently monitoring fish passing through a fishway under turbid water conditions, comprising a fishway (1), characterized in that: A grid-shaped monitoring frame is provided in the fishway (1), and the monitoring frame is composed of a plurality of monitoring modules (3) and a plurality of rest modules (4) connected by a connecting module (5). Fish can only pass through the monitoring frame and enter the fishway (1) exit after passing through the monitoring module (3) from the entrance of the fishway (1); The monitoring module (3) senses the fish body through a wireless sonar probe (302) and monitors the fish body information through an identification camera (303) with fill light. The inlet and outlet of the monitoring module (3) are both provided with a door that can be opened and closed, and the inlet door can be moved toward the outlet door. After the fish enters the monitoring module (3), the door closes to form a closed cavity. The rest module (4) is used for resting fish that have not entered the monitoring module (3); A purification chamber (2) is provided on one side of the fishway (1), and a purification module (6) is provided in the purification chamber (2) for improving water visibility. The water inlet component (307) of the monitoring module (3) is connected to the water outlet of the purification module (6), and the water outlet component (308) of the monitoring module (3) is connected to the water inlet of the purification module (6).

2. The device for efficiently monitoring fish passing through a fishway under turbid water conditions according to claim 1 is characterized in that: The monitoring module (3) includes a fish passage chamber (301), and the resting module (4) includes a fish resting chamber (401). The fish passage chamber (301) and the fish resting chamber (401) are boxes of the same shape, and adjacent boxes are spliced together through a connecting module (5) to form a grid-shaped monitoring frame perpendicular to the fishway (1).

3. The device for efficiently monitoring fish passing through a fishway under turbid water conditions according to claim 2 is characterized in that: The connecting module (5) comprises a snap-in groove (501) and a snap-in block (502) corresponding to the snap-in groove (501), and the snap-in groove (501) and the snap-in block (502) are both provided on the side of the box body close to the exit of the fishway (1), the snap-in block (502) is provided on the top and right side of the fish pond chamber (301) and the resting fish chamber (401), and the snap-in groove (501) is provided on the bottom and left side of the fish pond chamber (301) and the resting fish chamber (401), and when the box body is spliced with an adjacent box body along the water flow direction of the fishway (1), the snap-in block (502) cooperates with the corresponding snap-in groove (501) to form a snap connection.

4. The device for efficiently monitoring fish passing through a fishway under turbid water conditions according to claim 3 is characterized in that: The resting fish room (401) is provided with a resting groove parallel to the water flow direction of the fishway (1), and the opening of the resting groove faces the entrance side of the fishway (1).

5. The device for efficiently monitoring fish passing through a fishway under turbid water conditions according to claim 4 is characterized in that: A through hole parallel to the water flow direction of the fishway (1) is provided in the fish pond chamber (301), and the through hole and the fish pond chamber (301) cooperate to form a cavity. An identification camera (303) is embedded in the top of the cavity, and a wireless sonar probe (302) is embedded in the bottom of the cavity. An openable and closable front door component (304) is provided at the entrance of the through hole, and an openable and closable rear door component (305) is provided at the exit of the through hole. The front door component (304) forms a relative displacement with the rear door component (305) along the axial direction of the through hole via a moving component (306).

6. The device for efficiently monitoring fish passing through a fishway in turbid water conditions according to claim 5 is characterized in that: The front door assembly (304) and the rear door assembly (305) have the same structure; The front door assembly (304) includes two outward-opening front door panels (3041) arranged at the entrance of the through hole. The height of the front door panels (3041) is consistent with that of the through hole. A first rotating shaft (3042) is provided on each vertical side of the front door panels (3041) close to the inner wall of the through hole. The top of the first rotating shaft (3042) is rotatably connected to a slider (3044) corresponding to the top through a first bearing (3043). The bottom of the first rotating shaft (3042) is rotatably connected to a slider (3044) corresponding to the bottom through a first bearing (3043). The block (3044) is rotatably connected, and the sliders (3044) at the bottom are each provided with a first waterproof micro motor (3047). The output shaft of the first waterproof micro motor (3047) is inserted into the slider (3044) and meshes with the first driven gear (3045) on the corresponding first rotating shaft (3042) through the first driving gear (3046). The sliders (3044) are respectively embedded in the four corners of the through hole, and the sliders (3044) are symmetrical with respect to the middle axis of the through hole. The rear door assembly (305) includes two outward-opening rear door panels (3051) arranged at the outlet of the through hole. The height of the rear door panels (3051) is consistent with that of the through hole. A second rotating shaft (3052) is provided on each vertical side of the rear door panels (3051) close to the inner wall of the through hole. The top of the second rotating shaft (3052) is rotatably connected to the corresponding top fixed block (3054) through a second bearing (3053). The bottom of the second rotating shaft (3052) is rotatably connected to the corresponding bottom fixed block (3054) through a second bearing (3053). The fixed blocks (3054) are each provided with a second waterproof micro motor (3057). The output shaft of the second waterproof micro motor (3057) is inserted into the fixed block (3054) and meshes with the second driven gear (3055) on the corresponding second rotating shaft (3052) through the second driving gear (3056). The fixed blocks (3054) and the sliders (3044) correspond one to one, and the fixed blocks (3054) and the corresponding sliders (3044) are both able to move back and forth along the direction of the water flow through the corresponding moving components (306). The fixed block (3054) and the slider (3044) are both hollow structures.

7. The device for efficiently monitoring fish passing through a fishway in turbid water conditions according to claim 6 is characterized in that: The movable components (306) all include a slide groove (3061) arranged along the axial direction of the through hole, the slide groove (3061) corresponds to the slider (3044) one by one, the fixed block (3054) is fixedly embedded in the corresponding slide groove (3061) near one end of the through hole outlet, the slider (3044) is embedded in the corresponding slide groove (3061) to form a limited sliding, and a telescopic device (3062) is provided between the slider (3044) and the corresponding fixed block (3054).

8. The device for efficiently monitoring fish passing through a fishway in turbid water conditions according to claim 7 is characterized in that: The top of the fish pond chamber (301) is provided with a water inlet assembly (307), and the bottom of the fish pond chamber (301) is provided with a water outlet assembly (308). The water inlet assembly (307) and the water outlet assembly (308) have the same structure, and the lowest point of the water inlet assembly (307) is higher than the highest point of the through hole corresponding to the fish pond chamber (301), and the highest point of the water outlet assembly (308) is lower than the lowest point of the through hole corresponding to the fish pond chamber (301); The water inlet assembly (307) includes a water inlet pipe (3071), the outlet end of the water inlet pipe (3071) penetrates the inner wall of the fish pond chamber (301) from the front top of the fish pond chamber (301) and is connected to the top of the fish pond chamber (301), the water inlet end of the water inlet pipe (3071) is connected to a water inlet connector (3073) through an electric water inlet valve (3072), and the water inlet connector (3073) is connected to the water outlet of the purification module (6); The water outlet assembly (308) includes a water outlet pipe (3081), the water inlet end of the water outlet pipe (3081) penetrates the inner wall of the fish pond chamber (301) from the front bottom of the fish pond chamber (301) and is connected to the bottom of the fish pond chamber (301), and the water outlet end of the water outlet pipe (3081) is connected to a water outlet connector (3083) through an electric water outlet valve (3082), and the water outlet connector (3083) is connected to the water inlet of the purification module (6).

9. The device for efficiently monitoring fish passing through a fishway in turbid water conditions according to claim 8, characterized in that: The purification module (6) includes a water outlet branch (610) corresponding to the water inlet joint (3073) and a water inlet branch (601) corresponding to the water outlet joint (3083), the water inlet joint (3073) of each row of monitoring modules (3) is connected to the same horizontally arranged water outlet branch (610), and the water outlet joint (3083) of each row of monitoring modules (3) is connected to the same horizontally arranged water inlet branch (601); All water inlet branches (601) are collected at the water inlet end of the water inlet main pipe (602), the water outlet end of the water inlet main pipe (602) is connected to the water inlet end of the overflow tank (604) through the water inlet pump (603), the water outlet end of the overflow tank (604) is connected to the top of the clean water tank (606) through the overflow pipe (605), the water inlet end of the clean water tank (606) is connected to the external clean water source through the external clean water pipe (607), the water outlet end of the clean water tank (606) is connected to the water inlet end of the water outlet main pipe (609) through the water outlet pump (608), and all water outlet branches (610) are collected at the water outlet end of the water outlet main pipe (609).

10. A method for efficiently monitoring fish passing through a fishway under turbid water conditions, characterized in that: The device for efficiently monitoring fish passing through a fishway under turbid water conditions as claimed in claim 9 is used to identify and monitor fish passing through a fishway (1), comprising the following steps: Entry: Fish swim into the fishway (1) and are stopped at the entrance of the fishway (1) by the grid-shaped monitoring frame. Different processes are carried out according to the different modules they enter; Rest: When the fish enters the resting fish room (401) of the resting module (4), it rests and cannot pass through the fishway (1); Monitoring: When a fish enters the fish pond chamber (301) of the monitoring module (3), the wireless sonar probe (302) senses the fish body and controls and executes the following processes in sequence through an external computer; Cavity closure: the front door assembly (304) is closed to form a closed cavity; Water change: first open the water outlet assembly (308), and guide the low-visibility sewage into the overflow tank (604) through the purification module (6), and monitor the drainage status through the identification camera (303). After the drainage is completed, close the water outlet assembly (308), and open the water inlet assembly (307), and guide the overflow clear liquid and the water mixed with the external clean water source to improve visibility into the cavity, and monitor the drainage status through the identification camera (303). After the drainage is completed, close the water inlet assembly (307); Identification: identifying the information of the fish in the cavity through the identification camera (303), and feeding the information data of the fish to an external computer for processing and storage; Driving fish: After identification is completed, the rear door assembly (305) is opened first, and the closed front door assembly (304) is moved toward the rear door assembly (305) by the moving assembly (306) to form a push plate to drive the fish out of the cavity, and the fish body is sensed by the wireless sonar probe (302) until the fish body completely enters the exit end of the fishway (1) from the cavity; Reset: When the wireless sonar probe (302) senses that the fish has completely entered the exit of the fishway (1), the rear door assembly (305) is closed, and the closed front door assembly (304) is moved away from the rear door assembly (305) to the initial position through the moving assembly (306), and then the front door assembly (304) is opened to wait for the next "monitoring" process to run.

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