Fishing counting method based on fishing counting device

Abstract

The present invention discloses a fishing counting method based on a fishing counting device, which relates to the field of counting mechanisms, including deep-water cages, flexible fish nets, trap cages and grating counting mechanisms. The grating counting mechanism includes a screen, a grating sensor, a driving device, a switch door, and an information processing and transmission unit. The deep-water cage is divided into two fishing areas and a breeding area by a retractable flexible fish net, and fish are captured by trap cages and grating counting mechanisms, and the captured fish are counted to achieve a quantitative fishing function. The method has the advantages of accurate counting, convenient use, small space occupation, low cost, etc. The fishing counting method uses a screen to preliminarily screen the fish, and then uses a transverse grating sensor as a main method and a longitudinal grating sensor as a supplementary method to accurately judge the size of the fish passing through by blocking the infrared rays of the grating sensor, and accurately calculate the number of target fish caught.

Description

Technical Field

[0001] The invention relates to the field of counting mechanisms, in particular to a fishing counting method based on a fishing counting device. Background Art

[0002] Large deep water cages (generally refers to aquaculture water bodies 2000m 3 ) In aquaculture, there is a demand for multiple batches of fishing to capture a specific number or proportion and sell them on the market. Therefore, in each fishing process, all fish schools need to be gathered and manually counted, which is not only time-consuming and labor-intensive, but also the remaining fish will produce many stress reactions such as not eating after being frightened, which brings inconvenience to subsequent aquaculture. At present, there are some methods for counting fish through image processing, visual recognition, etc., such as the Chinese invention patent application with announcement number CN107909137A, which applies for a method for counting and identifying fish passing through a fishway, in which a camera is used for image processing. However, in actual use, it is often affected by conditions such as light intensity and water turbidity, resulting in counting failure and malfunction, and high cost. In addition, there is currently a lack of devices on the market that can meet the counting requirements and capture fish schools at the same time. Therefore, it is necessary to provide a quantitative fishing device that can accurately count fish schools and capture them after reaching a certain number. Summary of the invention

[0003] The purpose of the present invention is to provide a fishing counting method based on a fishing counting device, which aims to overcome the above-mentioned problems existing in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A fishing counting method based on a fishing counting device, wherein the fishing counting device used in the fishing counting method and suitable for a deep-water net cage comprises a deep-water net cage, a flexible fish net and a trap cage, and a grating counting mechanism, wherein the grating counting mechanism comprises a transverse grating sensor, a longitudinal grating sensor, a switch door, a driving device, and an information processing and transmission unit;

[0006] The flexible fish net is laid inside the deep-water cage and divides the deep-water cage into a fishing area and a breeding area. The flexible fish net is provided with a gap connecting the fishing area and the breeding area. The entrance of the trap cage is connected to the gap, and the exit of the trap cage is inside the fishing area. The exit of the trap cage is oppositely provided with a transverse transmitting module and a transverse receiving module of the transverse grating sensor, and oppositely provided with a longitudinal transmitting module and a longitudinal receiving module of the longitudinal grating sensor, and the transverse grating sensor and the longitudinal grating sensor are staggered front and back. The exit of the trap cage is openably provided with the switch door and the driving device for driving the switch door. The information processing and transmission unit is communicatively connected to the transverse grating sensor and the driving device. The information processing and transmission unit is used to calculate the number of fish caught according to the data of the transverse grating sensor, and is also used to control the opening and closing of the driving device.

[0007] The fishing counting device with the structure as described above is used to catch fish in the deep-water cage (1) and count the fish, and the specific steps are as follows:

[0008] Step (1): Enable the grating counting mechanism and input the target fish species C0 and the minimum height threshold H. min , maximum height threshold H max and the fishing quantity threshold Q0; the driving device opens the switch door, the transverse grating sensor and the longitudinal grating sensor sense the passage of fish, and record the blocked transverse beam line position x (x1, x2, x3, ...), record the blocked longitudinal beam line position y (y1, y2, y3, ...), and record the information to the information processing and transmission unit;

[0009] Step (2): After receiving the recorded information, the information processing and transmission unit determines whether the body height H of the fish currently passing through is within the body height threshold interval [H min -Δh, H max +Δh], if yes, it is counted into the number of fish caught Q, if no, it is not counted into the number of fish caught Q; where Δh is the grating interval;

[0010] Step (3): When the number of fish caught Q reaches the threshold value of the number of fish caught Q0, the drive device closes the switch door (44).

[0011] Furthermore, the trap cage is provided with an initial channel, at least one middle channel and a final channel in sequence from the trap cage entrance to the trap cage exit, and an inner channel is provided inside the middle channel; the inner channel and the final channel are both trapezoidal in shape with the narrow end facing the trap cage exit.

[0012] Furthermore, a plurality of sinkers are arranged on the lower edge of the above-mentioned flexible fish net, a plurality of buoys are arranged on the upper edge, a plurality of lifting ears are arranged on the left and right edges, and a net-collecting rope is passed between the plurality of lifting ears; after the fishing counting work is completed, the upper and lower ends of the net-collecting rope are pulled so that the lower end of the flexible fish net is as close to the inner bottom of the deep-water cage as possible and moves closer to the side of the deep-water cage inside the fishing area; the net-collecting rope is continued to be pulled so that the other three edges of the flexible fish net except the upper end are moved upward along the side of the deep-water cage, so that the flexible fish net forms a net bag shape with a concave middle, and the net-collecting work is completed.

[0013] Furthermore, it also includes a monitoring unit, and the monitoring unit is communicatively connected to the information processing and transmission unit.

[0014] Furthermore, the grating counting mechanism further comprises a screen, which is laid at the entrance of the trap cage; the step (2) further comprises selecting and installing a screen (41) with a suitable mesh size, as follows:

[0015] According to the type C0 and body height threshold interval [H min -Δh, H max +Δh], and the body width threshold interval [W min , W max ];

[0016] Select and install the mesh width in the range The screen between.

[0017] Furthermore, in the above step (2), the counting strategy for the number of fish caught Q is as follows:

[0018] (2.1) When the volume height H is [H min -Δh, H max +Δh] interval, and the body width W is in [W min , W max ] interval, the fish currently passing through will be counted into the fishing quantity Q;

[0019] (2.2) When the following situations occur, the number of fish caught Q remains unchanged:

[0020] Body height H is less than (H min -Δh);

[0021] Body width W is less than W min ;

[0022] (2.3) When the body height is greater than (H max +Δh), and the body width W is [W min , W max ] interval, the fish currently passing through will be counted into the fishing quantity Q.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] First, the fishing counting device of the present invention comprises a deep-water cage, a flexible fish net, a trap cage and a grating counting mechanism. The deep-water cage is divided into two fishing areas and a breeding area by a retractable flexible fish net. The trap cage and the grating counting mechanism are used to capture fish, and the captured fish are counted to realize the quantitative fishing function. In addition, the present invention also has the advantages of accurate counting, no need for repeated disassembly and assembly, easy use, small space occupation, low manufacturing and maintenance costs, etc.

[0025] Secondly, the present invention also discloses a method for counting fish, which uses a sieve to perform an initial screening of fish, and then uses a transverse grating sensor as a main method and a longitudinal grating sensor as a supplement to accurately judge the size of the passing fish through the infrared blocking of the grating sensor, thereby accurately calculating the number of target fish caught. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the assembly of the fishing counting device and the deep-water cage in the present invention.

[0027] Figure 2 The present invention is a schematic diagram of the assembly of a trap cage and a grating counting mechanism of a fishing counting device.

[0028] Figure 3 This is a control principle diagram of the fishing counting device in the present invention.

[0029] Figure 4 The present invention is a flow chart of the fishing counting method.

[0030] Description of reference numerals:

[0031] Deep-water cages - 1; breeding area - 11; fishing area - 12;

[0032] Flexible fishing net-2; notch-20; sinker-21; float-22; lifting lug-23; net-collecting rope-24;

[0033] Trap cage-3; Trap cage entrance-31; Trap cage exit-32; initial passage-301, middle passage-302; inner passage-3021; ​​final passage-303;

[0034] Grating counting mechanism-4; screen-41; transverse grating sensor-42; longitudinal grating sensor-43; switch door-44; drive device-45; information processing and transmission unit-46; monitoring unit 47. DETAILED DESCRIPTION

[0035] The specific implementation of the present invention is described below with reference to the accompanying drawings. In order to fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be implemented without these details.

[0036] like Figures 1 to 3 A fishing counting device suitable for a deep-water cage comprises a deep-water cage 1, a flexible fish net 2, a trap cage 3 and a grating counting mechanism 4. The flexible fish net 2 is laid inside the deep-water cage 1 and divides the deep-water cage 1 into a fishing area 12 and a breeding area 11. The flexible fish net 2 is provided with a gap 20 connecting the fishing area 12 and the breeding area 11; a trap cage entrance 31 of the trap cage 3 is connected to the gap 20, and a trap cage exit 32 is inside the fishing area 12. The trap cage 3 is equipped with a grating counting mechanism 4.

[0037] like Figures 1 to 3 , the lower edge of the flexible fish net 2 is arranged with a number of sinkers 21, the upper edge is arranged with a number of floats 22, the left and right edges are arranged with a number of lifting ears 23, and a net-collecting rope 24 is passed through the plurality of lifting ears 23. Preferably, the left and right edges of the flexible fish net 2 are arranged with a plurality of guide rings arranged at intervals, and the net-collecting rope 24 is passed through these guide rings. After the fishing counting work is completed, by pulling the upper and lower ends of the net-collecting rope 24, the lower end of the flexible fish net 2 is made to stick to the inner bottom of the deep-water cage 1 as much as possible, and to move closer to the side of the deep-water cage 1 inside the fishing area 12; continue to pull the net-collecting rope 24, so that the other three edges of the flexible fish net 2 except the upper end are moved upward as close to the side of the deep-water cage 1 as possible, so that the flexible fish net 2 forms a net bag shape with a concave middle, and the net-collecting work is completed.

[0038] like Figures 1 to 3 The trap cage 3 is sequentially connected with an initial channel 301 , at least one middle channel 302 and a final channel 303 from the trap cage entrance 31 to the trap cage exit 32 , and an inner channel 3021 is disposed inside the middle channel 302 .

[0039] like Figures 1 to 3The initial channel 301, the middle channel 302, the final channel 303 and the inner channel 3021 are all composed of a frame and a flexible fish net (only the partial flexible fish nets of each channel perimeter are shown in the figure). Preferably, the outlet of the inner channel 3021 and the outlet of the final channel 303 (i.e., the trap cage outlet 32) are both extended with flexible fish nets (not shown in the figure), and these extended flexible fish nets are used to form a small gap at the two outlets. The fish swimming forward can easily open the small gap to pass through the outlet, while the fish swimming back cannot open the small gap, thus achieving the effect of a "trap". It should be noted that the flexible fish nets of these trap cages are conventionally set in existing trap cages, and those skilled in the art can refer to the existing technology for implementation. The reason why they are described here is only because the flexible fish nets of the trap cages cannot be fully shown in order to more clearly show the technical improvements in the drawings of the specification.

[0040] The shape of the inner channel 3021 and the last channel 303 are both trapezoidal bodies with the narrow end facing the trap cage outlet 32. The first channel 301 is used to connect the trap cage 3 and the gap 20 of the flexible fish net 2, and provide a buffer and a space for fish to stay when entering the trap cage 3, reducing the fish from entering the middle channel 302, the last channel 303 and the trap cage outlet 32 ​​in groups, reducing the overlap of fish at the trap cage outlet 32, and entering helps to improve the accuracy of grating counting. The inner channel 3021 and the last channel 303 are both designed as trapezoidal bodies, which is conducive to preventing the fish swimming forward from swimming back after passing through the inner channel 3021 and the last channel 303.

[0041] like Figures 1 to 3 The grating counting mechanism 4 includes a screen 41, a transverse grating sensor 42, a switch door 44, a driving device 45, an information processing and transmission unit 46, and a monitoring unit 47.

[0042] like Figures 1 to 3 The screen 41 is a hard screen with a fixed mesh size, including but not limited to iron or iron alloy products. The screen 41 is laid at the entrance 31 of the trap cage. The fishing counting device is equipped with a plurality of screens 41 with different mesh sizes. When in use, a screen 41 with a suitable mesh size is selected according to needs and assembled at the entrance 31 of the trap cage. Preferably, the screen 41 is detachably fixed to the entrance 31 of the trap cage by hanging.

[0043] like Figures 1 to 3The trap cage exit 32 is equipped with a transverse grating sensor 42 and a longitudinal grating sensor 43. Specifically, the transverse transmitting module and the transverse receiving module of the transverse grating sensor 42 are oppositely arranged on the left and right sides of the trap cage exit 32, and the transverse transmitting module and the transverse receiving module of the longitudinal grating sensor 43 are oppositely arranged on the upper and lower sides of the trap cage exit 32. And the transverse grating sensor 42 and the longitudinal grating sensor 43 are staggered front and back.

[0044] like Figures 1 to 3 The trap cage outlet 32 ​​is provided with a switch door 44 which can be opened and closed, and a driving device 45 for driving the switch door 44. Preferably, the driving device 45 is a motor, and the output shaft of the motor is fixedly provided with a drum wound with a rope, and the other end of the rope is fixedly connected to the lower end of the switch door 44, and the upper end of the switch door 44 is rotatably provided at the trap cage outlet 32. The output shaft of the motor rotates, driving the drum to retract and release the rope, and then the switch door 44 is pulled open or closed by the rope.

[0045] like Figures 1 to 3 The information processing and transmission unit 46 is communicatively connected to the transverse grating sensor 42 and the driving device 45; the information processing and transmission unit 46 is used to calculate the number of fish caught according to the data of the transverse grating sensor 42, and is also used to control the opening and closing of the driving device 45. Specifically, the information processing and transmission unit 46 includes a PLC, a signal sensor and a wireless communication module. The monitoring unit 47 is communicatively connected to the information processing and transmission unit 46 for human-computer interaction, including outputting instructions, outputting parameters, and outputting device operation information. Specifically, the monitoring unit 47 includes an electronic display screen, a system monitoring platform and a wireless communication module.

[0046] like Figures 1 to 4 The present invention also discloses a fishing counting method based on a fishing counting device, using the fishing counting device with the structure as described above to fish and count the deep-water cage 1, and the specific steps are as follows:

[0047] Step (1): Enable the grating counting mechanism 4, input the target fish species C0, the minimum height threshold H min , maximum height threshold H max and the fishing quantity threshold Q0; the drive device 45 opens the switch door 44, the transverse grating sensor 42 and the longitudinal grating sensor 43 sense the passage of fish, and record the blocked transverse light beam line position x (x1, x2, x3, ...), and record the blocked longitudinal light beam line position y (y1, y2, y3, ...), and record the information to the information processing and transmission unit 46.

[0048] Specifically, the fish species, the fishing quantity threshold, and the preset minimum and maximum body height thresholds of the fish are input into the system monitoring platform; the PLC starts the transverse grating sensor 42 and the longitudinal grating sensor 43, and starts the driving device 45 to open the switch door 44; the transverse grating sensor 42 and the longitudinal grating sensor 43 record the position of the blocked light beam line when a fish passes by, and send the recorded information to the PLC, which then transmits the information to the information processor.

[0049] Step (2): Select and install a screen 41 with a suitable mesh size.

[0050] Specifically, the method for selecting and installing the screen 41 with a suitable mesh size is as follows: min -Δh, H max +Δh], and the body width threshold interval [W is calculated by using the height-width ratio H / W of different types of fish pre-stored in the information processing and transmission unit 46 min , W max ];

[0051] Select and install the mesh width in the range The mesh 41 between the two. Preferably, in order to simplify the calculation, the mesh of the mesh 41 of the present invention is designed to be square, and the width of the mesh is the height of the mesh. The mesh 41 is used as a primary screening structure to prevent the body height from being too large (H max +Δh) enter the fishing area 12, and avoid fish that are tall and large (H max +Δh) through the lateral grating sensor 42, resulting in erroneous counting. At the same time, in order to ensure that the body height is H max +Δh fish can pass through the sieve 41 smoothly, and the mesh size of the sieve 41 needs to be slightly larger than H max +Δh. Therefore, it is necessary to use a screen 41 with a suitable mesh size to provide a basis for the counting strategy of the number of fish caught Q adopted by the present invention.

[0052] Among them, the height-to-width ratio H / W of the fish species can be collected from existing data, or obtained in the following way: using three-dimensional scanning technology to collect three-dimensional data of fish of the same species but different sizes, the three-dimensional data includes body height and body width, and using these discrete body heights and body widths to draw the height-to-width ratio H / W of the fish of this type, and establish a body shape database of the fish of this type for use by the fishing counting device.

[0053] Step (3): After receiving the recorded information, the information processing and transmission unit 46 determines whether the body height H of the fish currently passing through is within the body height threshold interval [H min -Δh, H max+Δh], if yes, it is counted into the number of fish caught Q, if not, it is not counted into the number of fish caught Q; where Δh is the grating interval.

[0054] The counting strategy for the number of fish caught Q is as follows:

[0055] (3.1) When the volume height H is [H min -Δh, H max +Δh] interval, and the body width W is in [W min , W max ] interval, the fish currently passing through will be counted into the fishing quantity Q;

[0056] (3.2) When the following situations occur, the number of fish caught Q remains unchanged:

[0057] Body height H is less than (H min -Δh);

[0058] Body width W is less than W min ;

[0059] (3.3) When the body height is greater than (H max +Δh), and the body width W is [W min , W max ] interval, the fish currently passing through will be counted into the number of fish caught Q; Strategy (3.3) is mainly to prevent the two bodies from having a height H less than (H min -Δh) overlap in the lateral direction and pass through the lateral grating sensor 42 at the same time.

[0060] Step (4): When the number of fish caught Q reaches the threshold value Q0, the drive device 45 closes the switch door 44.

[0061] Specifically, the PLC controls the transverse grating sensor 42 and the longitudinal grating sensor 43 to stop working, and sends instructions to the driving device 45 to close the switch door 44.

[0062] In actual use, in order to further improve the fishing efficiency, fish food can be placed in the fishing area 12 in advance to attract the fish in the breeding area 11 to enter the fishing area 12.

[0063] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A fishing counting method based on a fishing counting device, characterized in that: The fishing counting device used in the fishing counting method comprises a deep-water net cage (1), a flexible fish net (2), a trap cage (3), and a grating counting mechanism (4), wherein the grating counting mechanism (4) comprises a transverse grating sensor (42), a longitudinal grating sensor (43), a switch door (44), a driving device (45), and an information processing and transmission unit (46); The flexible fish net (2) is laid inside the deep-water cage (1) and divides the deep-water cage (1) into a fishing area (12) and a breeding area (11); the flexible fish net (2) is provided with a gap (20) connecting the fishing area (12) and the breeding area (11); the trap cage entrance (31) of the trap cage (3) is connected to the gap (20), and the trap cage exit (32) is located inside the fishing area (12); the trap cage exit (32) is provided with a transverse transmitting module and a transverse receiving module of the transverse grating sensor (42) opposite to each other, and the longitudinal grating sensor (42) is provided opposite to each other (43), and the transverse grating sensor (42) and the longitudinal grating sensor (43) are staggered front to back; the trap cage outlet (32) is provided with the switch door (44) and the driving device (45) for driving the switch door (44) in an openable and closable manner; the information processing and transmission unit (46) is communicatively connected to the transverse grating sensor (42) and the driving device (45); the information processing and transmission unit (46) is used to calculate the number of fish caught according to the data of the transverse grating sensor (42), and is also used to control the opening and closing of the driving device (45); The fishing counting device with the structure as described above is used to catch fish in the deep-water cage (1) and count the fish, and the specific steps are as follows: Step (1): Enable the grating counting mechanism (4), input the target fish species C0, minimum height threshold H min , maximum height threshold H max and a fishing quantity threshold value Q0; the drive device (45) opens the switch door (44), the transverse grating sensor (42) and the longitudinal grating sensor (43) sense the passage of fish, and record the obstructed transverse beam line position x (x1, x2, x3, ...), record the obstructed longitudinal beam line position y (y1, y2, y3, ...), and record the information to the information processing and transmission unit (46); Step (2): After receiving the recorded information, the information processing and transmission unit (46) determines whether the body height H of the fish currently passing through is within the body height threshold interval [H min -Δh, H max +Δh], if yes, it is counted into the number of fish caught Q, if no, it is not counted into the number of fish caught Q; where Δh is the grating interval; Step (3): When the number of fish caught Q reaches the threshold value Q0, the drive device (45) closes the switch door (44).

2. A fishing counting method based on a fishing counting device according to claim 1, characterized in that: The trap cage (3) is provided with an initial channel (301), at least one middle channel (302) and a final channel (303) in sequence from the trap cage entrance (31) to the trap cage exit (32), and an inner channel (3021) is provided inside the middle channel (302); the inner channel (3021) and the final channel (303) are both trapezoidal in shape with the narrow end facing the trap cage exit (32).

3. A fishing counting method based on a fishing counting device according to claim 1, characterized in that: The lower edge of the flexible fish net (2) is provided with a plurality of sinkers (21), the upper edge is provided with a plurality of floats (22), the left and right edges are provided with a plurality of lifting ears (23), and a net-collecting rope (24) is inserted between the plurality of lifting ears (23); after the fishing counting work is completed, the upper and lower ends of the net-collecting rope (24) are pulled so that the lower end of the flexible fish net (2) is as close to the inner bottom of the deep-water cage (1) as possible and is moved closer to the side of the deep-water cage (1) inside the fishing area (12); the net-collecting rope (24) is continuously pulled so that the other three edges of the flexible fish net (2) except the upper end are moved upwards close to the side of the deep-water cage (1), so that the flexible fish net (2) forms a net bag shape with a concave middle, thereby completing the net-collecting work.

4. A fishing counting method based on a fishing counting device according to claim 1, characterized in that: The fishing counting device further comprises a monitoring unit (47), wherein the monitoring unit (47) is communicatively connected to the information processing and transmission unit (46).

5. A fishing counting method based on a fishing counting device according to claim 1, characterized in that: The grating counting mechanism (4) further comprises a screen (41), and the screen (41) is laid at the entrance of the trap cage (31); the step (2) further comprises selecting and installing the screen (41) with a suitable mesh size, as follows: According to the type C0 and body height threshold interval [H min -Δh, H max +Δh], and the body width threshold interval [W min , W max ]; Select and install the mesh width in the range A screen (41) is provided between the two surfaces.

6. A fishing counting method based on a fishing counting device according to claim 5, characterized in that: In step (2), the counting strategy for the number of fish caught Q is as follows: (2.1) When the volume height H is [H min -Δh, H max +Δh] interval, and the body width W is in [W min , W max ] interval, the fish currently passing through will be counted into the fishing quantity Q; (2.2) When the following situations occur, the number of fish caught Q remains unchanged: Body height H is less than (H min -Δh); Body width W is less than W min ; (2.3) When the body height is greater than (H max +Δh), and the body width W is [W min , W max ] interval, the fish currently passing through will be counted into the fishing quantity Q.

Images