A fish detection device suitable for turbid water

Abstract

The present invention provides a fish passing detection device suitable for turbid water quality, and relates to the technical field of fish detection. The fish passing detection device suitable for turbid water quality comprises a migratory channel and a vertical slit fishway arranged in the migratory channel. The present invention separates fish from water by rising above the water surface, and then collects biological characteristic data of fish schools, thereby ensuring the accuracy of sampling. The nearly closed structure of the upstream monitoring system and the downstream monitoring system isolates the interference of external ambient light on the collection clarity, and the fill light provides a stable light source. After the biological characteristic data of the fish school is collected, the fish are put back into the fish passing channel through the upstream fish release tube and the downstream fish release tube. The first tail tube end of the upstream fish release tube and the second tail tube end of the downstream fish release tube extend toward the bottom of the fish passing channel respectively, so that the fish will not be harmed in the process of entering the water.

Description

Technical Field

[0001] The invention relates to the technical field of fish detection, in particular to a fish passing detection device suitable for turbid water. Background Art

[0002] In current technology, the abundant water resources and suitable climatic conditions of reservoirs provide a good growth environment for fish, providing sufficient space and stable water sources. However, many gates built in rivers have destroyed the migratory channels of some fish with migratory characteristics. In order to protect the diversity of fish species, fishways for fish migration are usually built next to dams or gates. In order to monitor the situation of fish passing through, it is necessary to add a set of monitoring equipment in the fishway, but in the Yellow River and similar rivers with high sediment content, the underwater visibility is extremely low, which greatly reduces the accuracy of video monitoring. Therefore, it is necessary to find a new solution to solve such problems. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the present invention provides a fish passing detection device suitable for turbid water, which solves the problem that in the Yellow River and other rivers with high sediment content such as the Yellow River, the underwater visibility is extremely low, which greatly reduces the accuracy of video surveillance.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fish passing detection device suitable for turbid water, comprising a migratory channel and a vertical slit fishway arranged in the migratory channel, the length direction of the vertical slit fishway is parallel to the migratory channel, a fish passing channel for connecting the migratory channel is arranged inside the vertical slit fishway, a fish collecting trough is slidably connected to the fish passing channel and near the middle position in the length direction of the fish passing channel through a lifting component, when the fish collecting trough is raised to the end point of the upper stroke through the lifting component, the lower wall of the fish collecting trough is higher than the water surface height inside the fish passing channel, the fish collecting trough is composed of a metal frame and a metal mesh, a partition is fixedly connected to the inside of the fish collecting trough, the inside of the fish collecting trough is divided by the partition to form a downward fish collecting chamber and an upward fish collecting chamber distributed front and back, and a slope plate is fixedly connected to the inner part of the upward fish collecting chamber and the downward fish collecting chamber and near the lower end. The side walls of the upward fish collecting chamber and the downward fish collecting chamber are both provided with an inlet and an outlet for fish to enter and exit. The upward fish collecting chamber and the downward fish collecting chamber are provided with a counting structure for detecting the number of fish entering the upward fish collecting chamber and the downward fish collecting chamber. The inner rear wall of the fish passage and located on the left side of the fish collecting tank is fixedly connected with an upward monitoring system. The inner front wall of the fish passage and located on the right side of the fish collecting tank is fixedly connected with a downward monitoring system. The upward monitoring system and the downward monitoring system are both provided with fish outlet holes on the side away from the fish collecting tank. The upward monitoring system and the downward monitoring system are provided with a monitoring structure for collecting biological characteristic data of fish schools. The upward monitoring system and the downward monitoring system are provided with a fish releasing structure on the side away from the fish collecting tank. The inner lower walls of the upward monitoring system and the downward monitoring system are both sloped, and one end with the fish outlet hole is lower than the other end.

[0007] Preferably, a first shielding structure is provided between the lower wall of the fish collecting trough and the inner lower wall of the fish passing channel for preventing fish from entering between the lower wall of the fish collecting trough and the inner lower wall of the fish passing channel during the raising and lowering process of the fish collecting trough, and a second shielding structure is provided on the lower wall of the upward monitoring system and the downward monitoring system for controlling the fish collected inside the fish collecting trough before it rises to the end point of the upward stroke from being transferred to the upward monitoring system and the downward monitoring system.

[0008] Preferably, the lifting assembly includes a cross arm and two groups of hydraulic cylinders, the cross arm is fixedly connected to the upper wall of the fish collecting trough and the front and rear ends of the cross arm extend toward the front and rear sides of the fish collecting trough respectively, the upper wall of the vertical slit fishway and the front and rear sides of the fish passage are respectively provided with mounting holes, the two groups of hydraulic cylinders are respectively fixedly connected inside the two groups of mounting holes, the two groups of hydraulic cylinder extension shafts are respectively fixedly connected to the front and rear ends of the cross arm, and the fish collecting trough is driven to rise and fall by the extension and retraction of the hydraulic cylinder extension shafts.

[0009] Preferably, the inner lower wall of the slope plate in the ascending fish collecting chamber is lower on the left and higher on the right, and the inner lower wall of the slope plate in the descending fish collecting chamber is higher on the left and lower on the right. The right side of the ascending fish collecting chamber and the left side of the descending fish collecting chamber in the fish collecting trough are fixedly connected with mesh plates. The two groups of inlets are respectively arranged on the right side of the ascending fish collecting chamber and the left side of the descending fish collecting chamber and are both located above the mesh plates. The two groups of outlets are respectively arranged on the side of the ascending fish collecting chamber away from the inlet and the side of the descending fish collecting chamber away from the inlet. When the fish collecting trough is moved to the end point of the upward stroke by the lifting assembly, the outlet of the ascending fish collecting chamber is aligned with the right end of the ascending monitoring system. When the fish collecting trough is moved to the end point of the upward stroke by the lifting assembly, the outlet of the descending fish collecting chamber is aligned with the left end of the descending monitoring system.

[0010] Preferably, the counting structure includes two groups of sonar counting devices, which are respectively arranged on the left inner wall of the upstream fish collecting chamber and the right inner wall of the downstream fish collecting chamber and are both located close to the upper wall of the fish collecting trough, and the sonar emission directions of the two groups of sonar counting devices are respectively toward the lower inner wall of the upstream fish collecting chamber and the lower inner wall of the downstream fish collecting chamber.

[0011] Preferably, the monitoring structure includes two groups of fill lights and high-definition cameras. The two groups of fill lights are respectively fixedly connected to the inner upper wall of the uplink monitoring system and the inner upper wall of the downlink monitoring system. The two groups of high-definition cameras are respectively fixedly connected to the inner upper wall of the uplink monitoring system and the inner upper wall of the downlink monitoring system and are respectively located on one side of the two groups of fill lights.

[0012] Preferably, the fish releasing structure comprises an ascending fish releasing pipe and a descending fish releasing pipe, the ascending fish releasing pipe is fixedly connected to the end of the ascending monitoring system away from the fish collecting tank and the ascending fish releasing pipe is aligned with the fish outlet hole of the ascending monitoring system, the descending fish releasing pipe is fixedly connected to the end of the descending monitoring system away from the fish collecting tank and the descending fish releasing pipe is aligned with the fish outlet hole of the descending monitoring system, the ascending fish releasing pipe is composed of a first front pipe and a first tail pipe, the first front pipe is fixedly connected to the ascending monitoring system, the first tail pipe is fixedly connected to the end of the first front pipe away from the ascending monitoring system through a first connecting pipe, the descending fish releasing pipe is composed of a second front pipe and a second tail pipe, the second front pipe is fixedly connected to the descending monitoring system, and the second tail pipe is fixedly connected to the end of the second front pipe away from the ascending monitoring system through a second connecting pipe.

[0013] Preferably, the first front tube, the first tail tube, the second front tube and the second tail tube are all inclined, the inclination angle of the first front tube is consistent with the inclination angle of the inner lower wall of the upward monitoring system, the inclination angle of the second front tube is consistent with the inclination angle of the inner lower wall of the downward monitoring system, the angle between the axis line of the first tail tube and the axis line of the first front tube and the angle between the axis line of the second tail tube and the axis line of the second front tube are both one hundred and thirty-five degrees, and one end of the first tail tube away from the first connecting tube and one end of the second tail tube away from the second connecting tube both extend toward the inner lower wall of the fish passage and are immersed in water.

[0014] Preferably, the first shielding structure includes two groups of accordion plates, the two groups of accordion plates are fixedly connected between the inner lower wall of the fish passage and the lower wall of the fish collecting trough, and the two groups of accordion plates are respectively close to the left and right side walls of the fish collecting trough, the inner walls of the two groups of accordion plates are provided with multiple groups of second water holes, the front ends of the two groups of accordion plates are slidably connected to the inner front wall of the fish passage, and the rear ends of the two groups of accordion plates are slidably connected to the inner rear wall of the fish passage.

[0015] Preferably, the second shielding structure includes two groups of baffles, which are respectively fixedly connected to the lower walls of the upstream monitoring system and the downstream monitoring system, and the opposite sides of the two groups of baffles are respectively slidably connected to the left wall and the right wall of the fish collecting tank, and the inner walls of the two groups of baffles are provided with multiple groups of first water holes that pass through from left to right.

[0016] (III) Beneficial effects

[0017] The present invention provides a fish detection device suitable for turbid water, which has the following beneficial effects:

[0018] 1. Compared with the existing technology, the fish passing detection equipment suitable for turbid water quality can drive the fish collecting tank to be lifted after a certain number of fish enter the fish collecting tank through the lifting component, separate the fish and water by raising it above the water surface, and then collect the biological characteristic data of the fish school, thereby ensuring the accuracy of sampling, which is very suitable for waters with turbid water quality.

[0019] 2. Compared with the existing technology, the fish detection equipment suitable for turbid water has a nearly closed structure for the uplink monitoring system and the downlink monitoring system, and is equipped with a fill light inside. The nearly closed structure isolates the interference of external ambient light on the collection clarity, and the fill light provides a stable light source to ensure that the biological characteristics of fish collected are the same regardless of whether it is sunny or rainy, or day or night.

[0020] 3. Compared with the existing technology, the fish detection equipment suitable for turbid water quality, after the biological characteristic data of the fish school are collected, is put back into the fish passage through the upward fish release tube and the downward fish release tube, and the first tail tube end of the upward fish release tube and the second tail tube end of the downward fish release tube extend toward the bottom of the fish passage respectively, so that the fish will not be harmed in the process of entering the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 It is a partial schematic diagram of the uplink monitoring system and the baffle connection structure of the present invention;

[0024] Figure 4 A partial cross-sectional view of the internal structure of the uplink monitoring system of the present invention;

[0025] Figure 5 It is a partial schematic diagram of the connection structure of the fish collecting tank and the accordion board of the present invention;

[0026] Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0027] Figure 7 This is a schematic diagram of the slope plate structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the upward fish release pipe of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the downward fish release tube of the present invention.

[0030] Among them, 1. vertical fishway; 2. fish passage; 3. fish collecting trough; 4. upstream monitoring system; 5. upstream fish release pipe; 501. first front pipe; 502. first connecting pipe; 503. first tail pipe; 6. downstream monitoring system; 7. downstream fish release pipe; 701. second front pipe; 702. second connecting pipe; 703. second tail pipe; 8. hydraulic cylinder; 9. cross arm; 10. sonar counting device; 11. fish outlet hole; 12. baffle; 13. first water hole; 14. fill light; 15. high-definition camera; 16. slope plate; 17. mesh plate; 18. inlet; 19. outlet; 20. accordion board; 21. second water hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example:

[0033] like Figures 1 to 9 As shown, an embodiment of the present invention provides a fish passing detection device suitable for turbid water quality, comprising a migratory channel and a vertical slot fishway 1 arranged in the migratory channel, wherein the length direction of the vertical slot fishway 1 is parallel to the migratory channel, and a fish passing channel 2 for connecting to the migratory channel is arranged inside the vertical slot fishway 1;

[0034] In order to realize the up and down movement of the fish collecting tank 3, the fish collecting tank 3 is slidably connected inside the fish passage 2 and near the middle position in the length direction of the fish passage 2 through a lifting assembly. When the fish collecting tank 3 rises to the end of the upper stroke through the lifting assembly, the lower wall of the fish collecting tank 3 is higher than the water surface height inside the fish passage 2. The lifting assembly includes a cross arm 9 and two groups of hydraulic cylinders 8. The cross arm 9 is fixedly connected to the upper wall of the fish collecting tank 3 and the front and rear ends of the cross arm 9 extend toward the front and rear sides of the fish collecting tank 3 respectively. The upper wall of the vertical seam fishway 1 and the front and rear sides of the fish passage 2 are respectively provided with mounting holes. The two groups of hydraulic cylinders 8 are respectively fixedly connected inside the two groups of mounting holes. The two groups of hydraulic cylinder 8 extending shafts are respectively fixedly connected to the front and rear ends of the cross arm 9. The fish collecting tank 3 is driven to rise and fall by extending and retracting the extending shafts of the hydraulic cylinders 8. When the number of fish swimming in the fish collecting tank 3 reaches the specified number, the hydraulic cylinder 8 extends the shaft to drive the fish collecting tank 3 to rise, so that the fish collected in the fish collecting tank 3 are separated from the water surface, so as to facilitate the accurate collection of biological characteristics of the fish school and avoid being disturbed by turbid water quality.

[0035] In order to facilitate the rapid discharge of water inside the fish collecting tank 3 when it is lifted, the fish collecting tank 3 is composed of a metal frame and a metal mesh. A partition is fixedly connected inside the fish collecting tank 3. The interior of the fish collecting tank 3 is divided by the partition to form a downward fish collecting chamber and an upward fish collecting chamber distributed front and back. The downward fish collecting chamber and the upward fish collecting chamber are respectively used for fish schools in different migratory directions. Through the setting of the metal mesh, the water inside the fish collecting tank 3 can be quickly discharged when the fish collecting tank 3 is lifted, thereby achieving the purpose of fish and water separation;

[0036] In order to facilitate the transfer of fish in the fish collecting tank 3 to the upward monitoring system 4 or the downward monitoring system 6, a slope plate 16 is fixedly connected inside the upward fish collecting chamber and the downward fish collecting chamber and near the lower end, and the side walls of the upward fish collecting chamber and the downward fish collecting chamber are provided with an inlet 18 and an outlet 19 for fish to enter and exit. The inner lower wall of the slope plate 16 in the upward fish collecting chamber is low on the left and high on the right, and the inner lower wall of the slope plate 16 in the downward fish collecting chamber is high on the left and low on the right. A mesh plate 17 is fixedly connected to the right side of the upward fish collecting chamber and the left side of the downward fish collecting chamber in the fish collecting tank 3. Two groups of inlets 18 are respectively arranged on the right side of the upward fish collecting chamber and the left side of the downward fish collecting chamber and are both located on the mesh plate 1 7, two groups of outlets 19 are respectively arranged on the side of the upward fish collecting chamber away from the inlet 18 and the side of the downward fish collecting chamber away from the inlet 18. When the fish collecting tank 3 moves to the end of the upward stroke through the lifting component, the outlet 19 of the upward fish collecting chamber is aligned with the right end of the upward monitoring system 4, and when the fish collecting tank 3 moves to the end of the upward stroke through the lifting component, the outlet 19 of the downward fish collecting chamber is aligned with the left end of the downward monitoring system 6. After the fish enters the upward fish collecting chamber or the downward fish collecting chamber, during the rising process of the fish collecting tank 3, the mesh plate 17 is used to prevent the fish from swimming back from the inlet 18, thereby improving the efficiency of fish passing, and the slope plate 16 with an inclination facilitates the sliding of the fish;

[0037] In order to collect the number of fish, a counting structure for detecting the number of fish entering the upper and lower fish collecting chambers is provided inside the upper and lower fish collecting chambers. The counting structure includes two sets of sonar counting devices 10. The two sets of sonar counting devices 10 are respectively arranged on the inner left wall of the upper fish collecting chamber and the inner right wall of the lower fish collecting chamber and are both located near the upper wall of the fish collecting tank 3. The sonar emission directions of the two sets of sonar counting devices 10 are respectively toward the inner lower wall of the upper fish collecting chamber and the inner lower wall of the lower fish collecting chamber. The number of fish inside the upper and lower fish collecting chambers can be monitored by the sonar counting devices 10, so that the fish collecting tank 3 can be lifted when the number is reached to achieve fish-water separation.

[0038] In order to improve the accuracy of monitoring, an upward monitoring system 4 is fixedly connected to the inner rear wall of the fish passage 2 and located on the left side of the fish collecting tank 3, and a downward monitoring system 6 is fixedly connected to the inner front wall of the fish passage 2 and located on the right side of the fish collecting tank 3. The upward monitoring system 4 and the downward monitoring system 6 are both provided with fish outlet holes 11 on the side away from the fish collecting tank 3. The structures of the upward monitoring system 4 and the downward monitoring system 6 are close to closed, and the close-to-closed structure isolates the interference of external ambient light on the collection clarity;

[0039] In order to collect fish school biological characteristic data, the uplink monitoring system 4 and the downlink monitoring system 6 are provided with a monitoring structure for collecting fish school biological characteristic data, and the monitoring structure includes two sets of fill lights 14 and a high-definition camera 15. The two sets of fill lights 14 are respectively fixedly connected to the inner upper wall of the uplink monitoring system 4 and the inner upper wall of the downlink monitoring system 6. The two sets of high-definition cameras 15 are respectively fixedly connected to the inner upper wall of the uplink monitoring system 4 and the inner upper wall of the downlink monitoring system 6 and are respectively located on one side of the two sets of fill lights 14. The fill lights 14 can provide a stable light source to ensure that the fish biological characteristic environment collected is the same regardless of whether it is sunny or rainy, or day or night. The high-definition camera 15 is used to collect fish school biological characteristic data;

[0040] In order to put the fish back into the fish passage 2 after the collection of the biological characteristic data of the fish school is completed, a fish releasing structure is provided on the side of the upward monitoring system 4 and the downward monitoring system 6 away from the fish collecting tank 3, and the fish releasing structure includes an upward fish releasing pipe 5 and a downward fish releasing pipe 7. The upward fish releasing pipe 5 is fixedly connected to the end of the upward monitoring system 4 away from the fish collecting tank 3 and the upward fish releasing pipe 5 is aligned with the fish outlet hole 11 of the upward monitoring system 4, the downward fish releasing pipe 7 is fixedly connected to the end of the downward monitoring system 6 away from the fish collecting tank 3 and the downward fish releasing pipe 7 is aligned with the fish outlet hole 11 of the downward monitoring system 6, and the inner lower wall of the upward monitoring system 4 and the downward monitoring system 6 is provided with a fish releasing structure. The fish release pipe 5 is sloped and has one end with a fish outlet 11 lower than the other end. The upward fish release pipe 5 is composed of a first front pipe 501 and a first tail pipe 503. The first front pipe 501 is fixedly connected to the upward monitoring system 4. The first tail pipe 503 is fixedly connected to the end of the first front pipe 501 away from the upward monitoring system 4 through a first connecting pipe 502. The downward fish release pipe 7 is composed of a second front pipe 701 and a second tail pipe 703. The second front pipe 701 is fixedly connected to the downward monitoring system 6. The second tail pipe 703 is fixedly connected to the end of the second front pipe 701 away from the upward monitoring system 4 through a second connecting pipe 702. 1. The first tail pipe 503, the second front pipe 701 and the second tail pipe 703 are all inclined. The inclination angle of the first front pipe 501 is consistent with the inclination angle of the inner lower wall of the upward monitoring system 4, and the inclination angle of the second front pipe 701 is consistent with the inclination angle of the inner lower wall of the downward monitoring system 6. The angle between the axis line of the first tail pipe 503 and the axis line of the first front pipe 501 and the angle between the axis line of the second tail pipe 703 and the axis line of the second front pipe 701 are both 135 degrees. The end of the first tail pipe 503 away from the first connecting pipe 502 and the end of the second tail pipe 703 away from the second connecting pipe 702 are both facing the fish passage 2. The side lower wall extends and is immersed in water. When the fish slides through the inner part of the upward monitoring system 4 and the downward monitoring system 6, the high-definition camera 15 collects biometric data, and slides into the upward fish release tube 5 and the downward fish release tube 7 along the slope of the inner lower wall of the upward monitoring system 4 and the downward monitoring system 6, and is re-released into the fish passage 2 through the upward fish release tube 5 and the downward fish release tube 7. The ends of the first tail pipe 503 and the second tail pipe 703 extend toward the inner lower wall of the fish passage 2 and are immersed in water, and the special angle setting can ensure that the fish can slide conveniently and at the same time ensure that the fish will not be harmed in the process of entering the water;

[0041] In order to prevent the fish from entering the bottom of the fish collecting trough 3 and being crushed during the descent of the fish collecting trough 3, a first shielding structure is provided between the lower wall of the fish collecting trough 3 and the inner lower wall of the fish passing channel 2 to prevent the fish from entering the lower wall of the fish collecting trough 3 and the inner lower wall of the fish passing channel 2 during the lifting of the fish collecting trough 3. The first shielding structure includes two groups of accordion plates 20, both of which are fixedly connected between the inner lower wall of the fish passing channel 2 and the lower wall of the fish collecting trough 3, and the two groups of accordion plates 20 are respectively close to the left and right side walls of the fish collecting trough 3, and the inner walls of the two groups of accordion plates 20 are provided with multiple groups of second water holes 21, the front ends of the two groups of accordion plates 20 are slidably connected to the inner front wall of the fish passing channel 2, and the rear ends of the two groups of accordion plates 20 are slidably connected to the inner rear wall of the fish passing channel 2, and the two groups of accordion plates 20 are retractable. When the fish collecting trough 3 is lowered, the accordion plates 20 are folded and contracted, and when the fish collecting trough 3 is raised, the accordion plates 20 are driven to unfold, which can effectively prevent the school of fish from entering the bottom of the fish collecting trough 3 and being crushed;

[0042] In order to ensure that the fish collected in the fish collecting trough 3 will not slip out of the outlet 19 before the fish collecting trough 3 reaches the highest point, the lower wall of the upward monitoring system 4 and the downward monitoring system 6 is provided with a second shielding structure for controlling the fish collected inside the fish collecting trough 3 before it rises to the end of the upward stroke, so as not to be transferred to the upward monitoring system 4 and the downward monitoring system 6. The second shielding structure includes two groups of baffles 12, and the two groups of baffles 12 are respectively fixedly connected to the lower walls of the upward monitoring system 4 and the downward monitoring system 6. The opposite sides of the two groups of baffles 12 are respectively slidably connected to the left wall and the right wall of the fish collecting trough 3. The inner walls of the two groups of baffles 12 are provided with multiple groups of first water holes 13 that pass through from left to right. Before the outlet 19 of the fish collecting trough 3 is aligned with the upward monitoring system 4 or the downward monitoring system 6, the outlet 19 is slidably connected to the baffle 12, and the outlet 19 is closed by the baffle 12.

[0043] Working principle: The fish collecting tank 3 is driven to rise and fall by extending and retracting the extension shaft of the hydraulic cylinder 8. When the number of fish swimming in the fish collecting tank 3 reaches the specified number, the hydraulic cylinder 8 extends the shaft to drive the fish collecting tank 3 to rise, so that the fish collected in the fish collecting tank 3 are separated from the water surface, so as to facilitate the accurate collection of the biological characteristics of the fish school and avoid being disturbed by turbid water quality; the downward fish collecting chamber and the upward fish collecting chamber are respectively used for the fish schools in different migratory directions. Through the setting of the metal mesh, the water inside the fish collecting tank 3 can be quickly discharged when the fish collecting tank 3 is lifted, so as to achieve the separation of fish and water. Purpose: After the fish enter the upward fish collecting chamber or the downward fish collecting chamber, during the ascending process of the fish collecting tank 3, the mesh plate 17 is used to block the fish from swimming back from the inlet 18, thereby improving the efficiency of fish passing. The slope plate 16 with an inclination facilitates the sliding of fish. The sonar counting device 10 can monitor the number of fish in the upward fish collecting chamber and the downward fish collecting chamber, so that the fish collecting tank 3 can be lifted when the number is reached to achieve fish-water separation. The nearly closed structure isolates the interference of external ambient light on the collection clarity, and the fill light 14 can provide a stable light source to ensure that no matter it is sunny or sunny, Whether it is raining or day or night, the fish biological characteristics collected are the same. The high-definition camera 15 is used to collect fish biological characteristics data. When the fish slides through the uplink monitoring system 4 and the downlink monitoring system 6, the high-definition camera 15 collects biological characteristics data, and slides into the uplink fish release pipe 5 and the downlink fish release pipe 7 along the slope of the inner lower wall of the uplink monitoring system 4 and the downlink monitoring system 6, and is re-released into the fish passage 2 through the uplink fish release pipe 5 and the downlink fish release pipe 7. The ends of the first tail pipe 503 and the second tail pipe 703 are both facing the fish passage 2 The inner lower wall extends and is immersed in water, and the special angle setting can ensure that the fish can slide conveniently and at the same time ensure that the fish will not be hurt in the process of entering the water. The two sets of accordion plates 20 are retractable. When the fish collecting tank 3 descends, the accordion plates 20 are folded and contracted. When the fish collecting tank 3 rises, the accordion plates 20 are driven to unfold, which can effectively prevent the fish from entering the bottom of the fish collecting tank 3 and being crushed. Before the outlet 19 of the fish collecting tank 3 is aligned with the uplink monitoring system 4 or the downlink monitoring system 6, the outlet 19 is slidably connected with the baffle 12, and the outlet 19 is closed by the baffle 12.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fish detection device suitable for turbid water, characterized by: The invention comprises a migratory channel and a vertical slit fishway (1) arranged in the migratory channel, wherein the length direction of the vertical slit fishway (1) is parallel to the migratory channel, and a fish passage (2) for connecting to the migratory channel is arranged inside the vertical slit fishway (1), and a fish collecting tank (3) is slidably connected to the fish passage (2) at a position near the middle of the length direction of the fish passage (2) through a lifting assembly, and when the fish collecting tank (3) is lifted to the end point of the upward stroke through the lifting assembly, the lower wall of the fish collecting tank (3) is higher than the water surface height inside the fish passage (2), and the fish collecting tank (3) is composed of a metal frame and a metal mesh, and a partition is fixedly connected inside the fish collecting tank (3), and the fish collecting tank (3) is divided into a downward fish collecting chamber and an upward fish collecting chamber distributed front and back by the partition, and a slope plate (16) is fixedly connected inside and near the lower end of the upward fish collecting chamber and the downward fish collecting chamber, and the side walls of the upward fish collecting chamber and the downward fish collecting chamber are both provided with an inlet (18) for fish to enter and exit. and an outlet (19), wherein counting structures for detecting the number of fish entering the upward fish collecting chamber and the downward fish collecting chamber are arranged inside the upward fish collecting chamber and the downward fish collecting chamber, an upward monitoring system (4) is fixedly connected to the inner rear wall of the fish passage (2) and located on the left side of the fish collecting tank (3), and a downward monitoring system (6) is fixedly connected to the inner front wall of the fish passage (2) and located on the right side of the fish collecting tank (3), a fish outlet hole (11) is arranged on the side of the upward monitoring system (4) and the downward monitoring system (6) away from the fish collecting tank (3), a monitoring structure for collecting biological characteristic data of fish schools is arranged inside the upward monitoring system (4) and the downward monitoring system (6), and a fish releasing structure is arranged on the side of the upward monitoring system (4) and the downward monitoring system (6) away from the fish collecting tank (3), and the inner lower wall of the upward monitoring system (4) and the downward monitoring system (6) is sloped and one end of the fish outlet hole (11) is lower than the other end; The lower inner wall of the slope plate (16) in the upward fish collecting chamber is low on the left and high on the right, and the lower inner wall of the slope plate (16) in the downward fish collecting chamber is high on the left and low on the right. The right side of the upward fish collecting chamber and the left side of the downward fish collecting chamber in the fish collecting tank (3) are both fixedly connected with a mesh plate (17). The two groups of inlets (18) are respectively arranged on the right side of the upward fish collecting chamber and the left side of the downward fish collecting chamber and are both located above the mesh plate (17). The two groups of outlets (19) are respectively arranged on a side of the upward fish collecting chamber away from the inlet (18) and a side of the downward fish collecting chamber away from the inlet (18). When the fish collecting tank (3) is moved to the end point of the upward stroke by the lifting component, the outlet (19) of the upward fish collecting chamber is aligned with the right end of the upward monitoring system (4). When the fish collecting tank (3) is moved to the end point of the upward stroke by the lifting component, the outlet (19) of the downward fish collecting chamber is aligned with the left end of the downward monitoring system (6).

2. The fish passing detection device suitable for turbid water according to claim 1, characterized in that: A first shielding structure is provided between the lower wall of the fish collecting tank (3) and the inner lower wall of the fish passing passage (2) for preventing fish from entering between the lower wall of the fish collecting tank (3) and the inner lower wall of the fish passing passage (2) during the lifting process of the fish collecting tank (3), and a second shielding structure is provided on the lower wall of the upward monitoring system (4) and the downward monitoring system (6) for controlling the fish collected in the fish collecting tank (3) before it rises to the end point of the upward stroke from being transferred to the upward monitoring system (4) and the downward monitoring system (6).

3. The fish passing detection device suitable for turbid water according to claim 2, characterized in that: The lifting assembly comprises a cross arm (9) and two groups of hydraulic cylinders (8), wherein the cross arm (9) is fixedly connected to the upper wall of the fish collecting tank (3) and the front and rear ends of the cross arm (9) extend toward the front and rear sides of the fish collecting tank (3) respectively. The upper wall of the vertical slot fishway (1) and the front and rear sides of the fish passage (2) are respectively provided with mounting holes, and the two groups of hydraulic cylinders (8) are respectively fixedly connected inside the two groups of mounting holes. The extension shafts of the two groups of hydraulic cylinders (8) are respectively fixedly connected to the front and rear ends of the cross arm (9), and the fish collecting tank (3) is driven to rise and fall by the extension and retraction of the extension shafts of the hydraulic cylinders (8).

4. The fish passing detection device suitable for turbid water according to claim 3, characterized in that: The counting structure comprises two groups of sonar counting devices (10), the two groups of sonar counting devices (10) are respectively arranged on the inner left wall of the upper fish collecting chamber and the inner right wall of the lower fish collecting chamber and are both located near the upper wall of the fish collecting tank (3), and the sonar emission directions of the two groups of sonar counting devices (10) are respectively oriented towards the inner lower wall of the upper fish collecting chamber and the inner lower wall of the lower fish collecting chamber.

5. The fish passing detection device suitable for turbid water according to claim 4, characterized in that: The monitoring structure comprises two groups of fill lights (14) and a high-definition camera (15). The two groups of fill lights (14) are respectively fixedly connected to the inner upper wall of the uplink monitoring system (4) and the inner upper wall of the downlink monitoring system (6). The two groups of high-definition cameras (15) are respectively fixedly connected to the inner upper wall of the uplink monitoring system (4) and the inner upper wall of the downlink monitoring system (6) and are respectively located on one side of the two groups of fill lights (14).

6. The fish passing detection device suitable for turbid water according to claim 5, characterized in that: The fish releasing structure comprises an upward fish releasing pipe (5) and a downward fish releasing pipe (7), wherein the upward fish releasing pipe (5) is fixedly connected to an end of the upward monitoring system (4) away from the fish collecting tank (3), and the upward fish releasing pipe (5) is aligned with the fish outlet hole (11) of the upward monitoring system (4), and the downward fish releasing pipe (7) is fixedly connected to an end of the downward monitoring system (6) away from the fish collecting tank (3), and the downward fish releasing pipe (7) is aligned with the fish outlet hole (11) of the downward monitoring system (6), and the upward fish releasing pipe (5) is composed of a first front pipe (501) and a first tail pipe (503). The first front tube (501) is fixedly connected to the upward monitoring system (4); the first tail tube (503) is fixedly connected to an end of the first front tube (501) away from the upward monitoring system (4) via a first connecting tube (502); the downward fish release tube (7) is composed of a second front tube (701) and a second tail tube (703); the second front tube (701) is fixedly connected to the downward monitoring system (6); and the second tail tube (703) is fixedly connected to an end of the second front tube (701) away from the upward monitoring system (4) via a second connecting tube (702).

7. The fish passing detection device suitable for turbid water according to claim 6, characterized in that: The first front tube (501), the first tail tube (503), the second front tube (701) and the second tail tube (703) are all inclined; the inclination angle of the first front tube (501) is consistent with the inclination angle of the inner lower wall of the upward monitoring system (4); the inclination angle of the second front tube (701) is consistent with the inclination angle of the inner lower wall of the downward monitoring system (6); the angle between the axis of the first tail tube (503) and the axis of the first front tube (501) and the angle between the axis of the second tail tube (703) and the axis of the second front tube (701) are both one hundred and thirty-five degrees; one end of the first tail tube (503) away from the first connecting tube (502) and one end of the second tail tube (703) away from the second connecting tube (702) both extend toward the inner lower wall of the fish passage (2) and are both immersed in water.

8. The fish passing detection device suitable for turbid water according to claim 7, characterized in that: The first shielding structure comprises two groups of accordion plates (20), the two groups of accordion plates (20) are fixedly connected between the inner lower wall of the fish passage (2) and the lower wall of the fish collecting tank (3), and the two groups of accordion plates (20) are respectively close to the left and right side walls of the fish collecting tank (3), the inner walls of the two groups of accordion plates (20) are provided with a plurality of groups of second water holes (21), the front ends of the two groups of accordion plates (20) are slidably connected to the inner front wall of the fish passage (2), and the rear ends of the two groups of accordion plates (20) are slidably connected to the inner rear wall of the fish passage (2).

9. The fish passing detection device suitable for turbid water according to claim 8, characterized in that: The second shielding structure comprises two groups of baffles (12), the two groups of baffles (12) being fixedly connected to the lower walls of the upstream monitoring system (4) and the downstream monitoring system (6), respectively, and the opposite sides of the two groups of baffles (12) being slidably connected to the left wall and the right wall of the fish collecting tank (3), respectively, and the inner walls of the two groups of baffles (12) are provided with a plurality of groups of first water holes (13) which are through-through from left to right.

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