A visualized vertical slot fishway monitoring device

Abstract

The utility model relates to ecological hydraulic field, concretely discloses a visual vertical joint type fishway monitoring device, including vertical joint type fishway, the inside one side fixed mounting of vertical joint type fishway has monitoring platform A, the inside other side fixed mounting of vertical joint type fishway has monitoring platform B, and the monitoring channel is formed between monitoring platform B and monitoring platform A, and the inside fixed setting of monitoring channel has matrix platform, and one side of matrix platform is installed with phased array A. This visual vertical joint type fishway monitoring device, six groups of transmitting probe of phased array A and six groups of receiving probe of phased array B are respectively arranged opposite with flow through mouth, detection hole, butt joint hole, can realize the independent monitoring of each flow through mouth in the layered fish school, covers multidimensional space, avoids the missed detection, and can respectively count the fish quantity of each layer through the layered corresponding flow through mouth of multiple groups of probes for the layered swimming of a large number of river fish, satisfies the fine monitoring demand of fish school space distribution characteristics.

Description

Technical Field

[0001] This utility model relates to the field of ecological hydraulic engineering, specifically a visual vertical slit fishway monitoring device. Background Technology

[0002] Hydropower, as a green and renewable energy source, is being vigorously developed in China. However, the obstructive effect of hydropower projects on the free migration of fish cannot be ignored. To reduce the obstruction of fish movement by hydropower projects, many countries have built fish passage facilities (such as fishways, fish lifts, and fish bypasses) to assist fish in crossing dams. However, the effectiveness of these facilities varies, and some do not achieve the desired results. Improving the effectiveness of fish passage facilities is a challenge faced by engineers and fish biologists. One prerequisite for improving the effectiveness of fish passage facilities is to evaluate their fish passage efficiency, quantify the fish passage efficiency of key links in the fishway, and then identify fishway structures with unsatisfactory performance. In recent years, fishway construction in my country has been booming, but quantitative evaluation of fish passage efficiency is still rare, and most fishways have not undergone long-term monitoring.

[0003] To address the aforementioned issues, a search revealed Chinese patent CN206267116U, which discloses a vertical slit type fishway fish passage effect monitoring device. The device includes a retaining wall installed within the fishway, the retaining wall forming a rectangular trough shape with an open top. One end of the retaining wall has a water outlet, and the other end has a vertical slit opening in the fishway. A downstream funnel-shaped opening is located near the water outlet within the retaining wall. A first flat plate is horizontally positioned on the bottom surface of the downstream funnel-shaped opening's outlet, and a second flat plate is vertically positioned on its side. A first camera is positioned above the first flat plate, and a second camera is positioned on the side opposite the second flat plate.

[0004] Although the above-mentioned device can monitor all fish passing through the fishway in a comprehensive and continuous manner, in actual use, at the measurement position of the vertical slit fishway, a large number of fish gather together and cannot form a neat array. The large number of fish gathered together will make the echo signal received by the phased array complex and interfere with each other, resulting in signal overlap or blurring, thus affecting the accurate counting of fish. Utility Model Content

[0005] The purpose of this invention is to provide a visual vertical slit fishway monitoring device to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a visual vertical slit fishway monitoring device, including a vertical slit fishway. A monitoring station A is fixedly installed on one side of the interior of the vertical slit fishway, and a monitoring station B is fixedly installed on the other side of the interior of the vertical slit fishway. A monitoring channel is formed between the monitoring station B and the monitoring station A. A matrix station is fixedly installed inside the monitoring channel. A phased array A is installed on one side of the matrix station, and a phased array B is installed on the other side of the matrix station. Six sets of flow ports are evenly opened on the matrix station, and the distance between adjacent sets of flow ports is the same.

[0007] Preferably, the monitoring station A and the monitoring station B are symmetrical about the central axis of the vertical slit fishway, and each of the monitoring station A and the monitoring station B is equipped with a mounting platform at its end. The monitoring station A and the monitoring station B are arranged in a figure-eight shape.

[0008] Preferably, both sets of mounting platforms have mounting holes at their ends, and six sets of detection holes are evenly distributed on the sidewalls of the mounting holes.

[0009] Preferably, the matrix stage is a cuboid, and the six sets of flow ports inside the matrix stage are provided with docking holes on both sides. The six sets of docking holes are arranged opposite to the six sets of detection holes, and the diameters of the docking holes and detection holes are the same. The ends of the six sets of flow ports are all rounded.

[0010] Preferably, multiple sets of water inlets are evenly provided on monitoring platform A and monitoring platform B. The water inlets are arranged in a strip shape. Buffer pads are fixedly provided on the surfaces of both monitoring platform A and monitoring platform B. The buffer pads are elastic rubber pads.

[0011] Preferably, phased array A and phased array B are respectively inserted inside the two sets of mounting holes. Phased array A and phased array B are arranged opposite to each other. Six sets of transmitting probes are evenly installed on phased array A, and six sets of receiving probes are evenly installed on phased array B. The transmitting probes, receiving probes, detection holes and docking holes are arranged opposite to each other.

[0012] Preferably, phased array A and phased array B are arranged in parallel, with phased array A and phased array B respectively located on both sides of the monitoring channel.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are:

[0014] 1. This utility model guides river fish through the monitoring channel in a matrix-like orderly manner using six sets of flow outlets on the matrix station, avoiding chaotic fish gathering, reducing signal obstruction and interference, and improving detection accuracy; multiple sets of probes are used for layered monitoring, with the six sets of transmitting probes of phased array A and the six sets of receiving probes of phased array B respectively positioned opposite the flow outlets, detection holes, and docking holes, enabling independent monitoring of layered fish groups within each flow outlet, covering multi-dimensional space, and avoiding missed detections; for a large number of river fish swimming in layers, the number of fish in each layer can be counted separately by using multiple sets of probes corresponding to the flow outlets, meeting the needs for refined monitoring of the spatial distribution characteristics of fish groups;

[0015] 2. This utility model features a matrix station with six evenly spaced flow ports inside. River fish can pass through these six ports in a matrix pattern through the monitoring channel. Phased array A and phased array B can monitor the number of river fish swimming in a matrix pattern within the six flow ports. Each of the six flow ports corresponds to one of the six probes, allowing for simultaneous parallel detection of fish schools in multiple areas. Compared to single-channel monitoring, this significantly improves data acquisition efficiency and shortens monitoring time. The fish swim in a regular array within the matrix station, making signal reflection patterns easier to identify, reducing the difficulty of processing cluttered signals by the algorithm, and improving target recognition accuracy and counting reliability. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Diagram showing the assembly and installation process;

[0018] Figure 3 for Figure 2 A bottom view;

[0019] Figure 4 for Figure 2 Rear view;

[0020] Figure 5 for Figure 1 Side view.

[0021] Explanation of reference numerals in the attached diagram: 1. Vertical slotted fishway; 2. Monitoring station A; 21. Monitoring station B; 3. Buffer pad; 4. Water inlet; 5. Mounting platform; 51. Mounting hole; 52. Detection hole; 6. Matrix platform; 61. Flow outlet; 62. Rounded corner; 63. Connecting hole; 7. Phased array A; 71. Phased array B; 100. Monitoring channel. Detailed Implementation

[0022] Please see Figure 1-5This utility model provides a visual vertical slit fishway monitoring device, including a vertical slit fishway 1. A monitoring station A2 is fixedly installed on one side of the interior of the vertical slit fishway 1, and a monitoring station B21 is fixedly installed on the other side of the interior of the vertical slit fishway 1. A monitoring channel 100 is formed between the monitoring station B21 and the monitoring station A2. A matrix station 6 is fixedly installed inside the monitoring channel 100. A phased array A7 is installed on one side of the matrix station 6, and a phased array B71 is installed on the other side of the matrix station 6. Six sets of flow ports 61 are evenly opened on the matrix station 6, and the distance between two adjacent sets of flow ports 61 is the same.

[0023] Working Principle: Monitoring stations A2 and B21 are installed on the inner wall of the vertical slotted fishway 1, forming a monitoring channel 100 between them. A matrix station 6 is fixedly installed inside the monitoring channel 100, with six sets of flow openings 61 evenly distributed inside. River fish can pass through the six sets of flow openings 61 in a matrix pattern through the monitoring channel 100. Simultaneously, phased arrays A7 and B71 monitor the number of river fish swimming in a matrix pattern inside the six sets of flow openings 61. Six sets of transmitting probes are evenly installed on phased array A7, and six sets of receiving probes are evenly installed on phased array B71. The transmitting probes, receiving probes, detection holes 52, and docking holes 63 are arranged opposite each other. Phased arrays A7 and B71 monitor the number of river fish in a layered state. The six sets of flow openings 61 of the matrix station 6 guide the river fish to pass through the monitoring channel 100 in an orderly matrix pattern, avoiding chaotic fish gathering, reducing signal obstruction and interference, and improving detection accuracy. Multiple sets of probes... The system employs a layered monitoring approach, with six transmitting probes from phased array A7 and six receiving probes from phased array B71 positioned opposite the flow port 61, detection hole 52, and docking hole 63, respectively. This allows for independent monitoring of layered fish populations within each flow port 61, covering multi-dimensional space and preventing missed detections. The one-to-one correspondence between the six flow ports 61 and the six probes enables simultaneous parallel detection of fish populations in multiple areas, significantly improving data acquisition efficiency and shortening monitoring time compared to single-channel monitoring. The fish populations swim in a regular array within the matrix station 6, making signal reflection patterns easier to identify, reducing the difficulty of processing cluttered signals by the algorithm, and improving target recognition accuracy and counting reliability. The monitoring station, matrix station 6, and phased array system are fixedly installed on the inner wall of the fishway, forming an integrated structure that adapts to the fishway's water flow environment, ensuring strong long-term monitoring stability and reducing human intervention. For the large number of fish swimming in layers, multiple probes corresponding to the flow ports 61 allow for separate counting of fish in each layer, meeting the need for refined monitoring of the spatial distribution characteristics of fish populations.

[0024] The six transmitting probes on the phased array emit high-frequency ultrasonic signals according to a specific timing and frequency, triggered by the control system. These signals propagate in the fishway water with specific beam shapes and directions. Due to the characteristics of the phased array, the beam direction and focusing position can be changed by controlling the feed phase of each transmitting probe, thereby enabling scanning and detection of different areas of the fishway. When the ultrasonic waves encounter a fish, reflection and scattering occur. The six receiving probes on the phased array are responsible for receiving these ultrasonic signals reflected or scattered back by the fish. Each receiving probe independently converts the received signal into an electrical signal and transmits it to the signal processing unit to complete the fish counting. This technology is a mature existing technology and will not be elaborated further here.

[0025] As a preferred embodiment, monitoring station A2 and monitoring station B21 are symmetrical about the central axis of the vertical slit fishway 1. Both monitoring station A2 and monitoring station B21 are equipped with mounting platforms 5 at their ends, and monitoring station A2 and monitoring station B21 are arranged in a figure-eight shape.

[0026] As a preferred embodiment, each of the two sets of mounting platforms 5 has a mounting hole 51 at its end, and six sets of detection holes 52 are evenly provided on the side wall of the mounting hole 51.

[0027] As a preferred embodiment, the matrix platform 6 is set as a cuboid. The six sets of flow ports 61 inside the matrix platform 6 are provided with docking holes 63 on both sides. The six sets of docking holes 63 are arranged opposite to the six sets of detection holes 52. The diameters of the docking holes 63 and the detection holes 52 are the same. The ends of the six sets of flow ports 61 are all rounded 62.

[0028] As a preferred implementation, multiple sets of water inlets 4 are evenly provided on monitoring platform A2 and monitoring platform B21. The water inlets 4 are arranged in a strip shape. Buffer pads 3 are fixedly provided on the surfaces of monitoring platform A2 and monitoring platform B21. The buffer pads 3 are elastic rubber pads.

[0029] In a preferred embodiment, phased arrays A7 and B71 are respectively inserted inside the two sets of mounting holes 51. Phased arrays A7 and B71 are arranged opposite to each other. Six sets of transmitting probes are evenly installed on phased array A7, and six sets of receiving probes are evenly installed on phased array B71. The transmitting probes, receiving probes, detection holes 52 and docking holes 63 are arranged opposite to each other.

[0030] As a preferred implementation, phased array A7 and phased array B71 are arranged in parallel, with phased array A7 and phased array B71 respectively located on both sides of monitoring channel 100.

Claims

1. A visual vertical slit fishway monitoring device, comprising a vertical slit fishway (1), characterized in that: A monitoring station A (2) is fixedly installed on one side of the vertical slit fishway (1), and a monitoring station B (21) is fixedly installed on the other side of the vertical slit fishway (1). A monitoring channel (100) is formed between the monitoring station B (21) and the monitoring station A (2). A matrix station (6) is fixedly installed inside the monitoring channel (100). A phased array A (7) is installed on one side of the matrix station (6), and a phased array B (71) is installed on the other side of the matrix station (6). Six sets of flow ports (61) are evenly opened on the matrix station (6), and the distance between two adjacent sets of flow ports (61) is the same.

2. The visual vertical slot fishway monitoring device according to claim 1, characterized in that: The monitoring station A (2) and monitoring station B (21) are symmetrical about the central axis of the vertical slit fishway (1). Both monitoring station A (2) and monitoring station B (21) are equipped with mounting platforms (5) at their ends. The monitoring station A (2) and monitoring station B (21) are arranged in a figure-eight shape.

3. The visual vertical slit fishway monitoring device according to claim 2, characterized in that: Both sets of mounting platforms (5) have mounting holes (51) at their ends, and six sets of detection holes (52) are evenly provided on the side wall of the mounting holes (51).

4. A visual vertical slit fishway monitoring device according to claim 1 or 2, characterized in that: The matrix platform (6) is a cuboid. The six sets of flow ports (61) inside the matrix platform (6) are provided with docking holes (63) on both sides. The six sets of docking holes (63) are arranged opposite to the six sets of detection holes (52). The diameters of the docking holes (63) and the detection holes (52) are the same. The ends of the six sets of flow ports (61) are rounded (62).

5. The visual vertical slit fishway monitoring device according to claim 1, characterized in that: Multiple sets of water inlets (4) are evenly opened on the monitoring platform A (2) and monitoring platform B (21). The water inlets (4) are arranged in a strip shape. Buffer pads (3) are fixedly installed on the surface of both monitoring platform A (2) and monitoring platform B (21). The buffer pads (3) are elastic rubber pads.

6. The visual vertical slit fishway monitoring device according to claim 3, characterized in that: The two sets of mounting holes (51) are respectively interspersed with phased array A (7) and phased array B (71). Phased array A (7) and phased array B (71) are arranged opposite to each other. Six sets of transmitting probes are evenly installed on phased array A (7) and six sets of receiving probes are evenly installed on phased array B (71). The transmitting probes, receiving probes, detection holes (52) and docking holes (63) are arranged opposite to each other.

7. The visual vertical slit fishway monitoring device according to claim 6, characterized in that: The phased array A (7) and phased array B (71) are arranged in parallel, and phased array A (7) and phased array B (71) are respectively arranged on both sides of the monitoring channel (100).

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