A real-time positioning and protection device for fish migration trajectory

Abstract

This invention discloses a real-time positioning and protection device for fish migration tracks, comprising a rigid protective sleeve, a bottom cover fixedly connected to the bottom end of the rigid protective sleeve, and a through hole in the center of the bottom end cover; a top cover detachably connected to the top end of the rigid protective sleeve, and a GPS placement box detachably connected to the center of the bottom end of the top end cover, with a GPS locator installed inside the GPS placement box. This invention discloses a real-time positioning and protection device for fish migration tracks, designed as a protective device for mainstream ultrasonic receivers. It not only adds GPS positioning functionality to the ultrasonic receiver, enabling GPS positioning of tagged fish and equipment placement, facilitating the generation of fish migration tracks and equipment tracking, but also protects the ultrasonic receiver from wear and tear or other biological adhesion, ensuring the normal operation of the equipment.

Description

Technical Field

[0001] This invention relates to the fields of fish behavior research and aquatic biological resource protection technology, and in particular to a device for real-time positioning and protection of fish migration trajectories. Background Technology

[0002] Ultrasonic telemetry technology is now widely used in the behavioral studies of various aquatic animals, including cartilaginous fish, bony fish, and other aquatic animals. This technology originated in the mid-1950s and was one of the earliest methods used to study the migratory behavior of individual aquatic animals in their natural environment. Researchers collect detailed and instantaneous migratory behavior data by ultrasonically tagging fish and then tracking the tagged fish using telemetry. This data is then combined with the ecological environment to study the fish's behavior over a period of time. Through array telemetry receivers, multi-target, large-area telemetry has been achieved.

[0003] An ultrasonic telemetry system consists of two parts: a transmitter and a receiver. The transmitter is a tag implanted inside or suspended outside the organism; the receiver is used to receive the ultrasonic signals with coded information emitted by the transmitter within its effective range to obtain information such as the transmitter's behavioral trajectory. However, the location information needs to be determined by a GPS device, and the location information is an indispensable part of generating and dynamically displaying fish migration trajectories.

[0004] Currently, most mainstream ultrasonic receivers on the market (such as those from Vemco (Canada), Lotek (Canada), and Sonotronics (USA)) are cylindrical in shape. Furthermore, the casings of these receivers are made of plastic, which makes them susceptible to wear and tear from friction with the surrounding medium when submerged in water. Over time, this wear and tear compromises the receiver's watertightness, ultimately leading to short circuits in the internal chip and damage to the device. In addition, after prolonged operation in water, a thick layer of algae or even freshwater crustaceans will adhere to the surface of the ultrasonic receiver, accelerating its aging and affecting its normal operation.

[0005] Furthermore, fish behavior data needs to be combined with GPS positioning data to generate real-time migration trajectory maps and display them dynamically. However, the ultrasonic receivers currently on the market do not have positioning functions themselves and require a separate GPS device to achieve positioning functionality. Summary of the Invention

[0006] The purpose of this invention is to provide a real-time positioning and protection device for fish migration trajectories, so as to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following solution: The present invention provides a real-time positioning and protection device for fish migration trajectory, including a rigid protective sleeve, a bottom end cap fixedly connected to the bottom end of the rigid protective sleeve, and a through hole opened in the center of the bottom end cap; a top end cap detachably connected to the top end of the rigid protective sleeve, and a GPS placement box detachably connected to the center of the bottom end of the top end cap, wherein a GPS locator is installed in the GPS placement box.

[0008] Preferably, the bottom end of the top cover is fixedly connected to an annular protrusion, the GPS placement box is located inside the annular protrusion, and the top cover fixing screws are symmetrically arranged on both sides of the rigid protective sleeve. The top cover fixing screws pass through the rigid protective sleeve and are threadedly connected to the rigid protective sleeve. The end of the top cover fixing screw near the annular protrusion is threadedly connected to the annular protrusion, and the end of the top cover fixing screw away from the annular protrusion is fixedly connected to a first handle ring 27.

[0009] Preferably, the rigid protective sleeve is fixedly connected with a connecting ring, and there are three pairs of connecting rings. The three pairs of connecting rings are evenly distributed along the length direction of the rigid protective sleeve, and the corresponding connecting rings are symmetrical about the central axis of the rigid protective sleeve.

[0010] Preferably, the rigid protective sleeve has four signal collection ports at its bottom, and the four signal collection ports are evenly distributed along the circumference.

[0011] Preferably, the GPS storage box is detachably connected to the top cover by fastening bolts.

[0012] Preferably, the signal collection port is rectangular in shape, with a length of 30-40mm and a width of 20-30mm.

[0013] Preferably, the rigid protective sleeve is a cylindrical stainless steel sleeve with a wall thickness of 8-12 mm.

[0014] Preferably, the through hole is circular in shape and has a diameter of 25-30 mm.

[0015] Preferably, a second handle ring is fixedly connected to the center of the top of the top cover.

[0016] The present invention discloses the following technical effects:

[0017] The present invention discloses a real-time positioning and protection device for fish migration trajectory, which is a protective device designed for mainstream ultrasonic receivers. It not only adds GPS positioning function to the ultrasonic receiver, enabling GPS positioning of the tagged fish and the equipment placement, facilitating the generation of fish migration trajectories and equipment tracking, but also protects the ultrasonic receiver from wear and tear or other biological adhesion, ensuring the normal use of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an axonometric view of a real-time positioning and protection device for fish migration trajectories according to the present invention;

[0020] Figure 2 This is a front sectional view of a fish migration trajectory real-time positioning and protection device according to the present invention;

[0021] Figure 3 This is a left sectional view of a fish migration trajectory real-time positioning and protection device according to the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0023] Figure 5 This is a schematic diagram with an auxiliary stabilizing mechanism;

[0024] Figure 6 A schematic diagram of the auxiliary stabilizing mechanism;

[0025] Figure 7 for Figure 6 Enlarged view of B in the middle;

[0026] Figure 8 The main view of the auxiliary stabilizing mechanism;

[0027] Figure 9 This is a schematic diagram of the power unit structure;

[0028] Among them, 1 is the second handle ring, 2 is the top cover fixing screw, 3 is the connecting ring, 4 is the rigid protective sleeve, 5 is the signal collection port, 6 is the bottom cover, 7 is the top cover, 8 is the ultrasonic receiver, 9 is the GPS placement box, 10 is the annular protrusion, 11 is the GPS locator, 12 is the fastening bolt, 13 is the power box, 14 is the blade, 15 is the transmission box, 16 is the slider, 17 is the reciprocating screw, 18 is the fixing plate, 19 is the oscillating paddle, 20 is the transmission frame, 21 is the connecting rod, 22 is the coupling, 23 is the second rotating shaft, 24 is the first rotating shaft, 25 is the hinge shaft, 26 is the sliding sleeve, 27 is the first handle ring, 28 is the fixing rod, 29 is the third rotating shaft, and 30 is the fixing block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] like Figure 1-4 As shown, this invention provides a real-time positioning and protection device for fish migration trajectories, including a rigid protective sleeve 4. A bottom cover 6 is fixedly connected to the bottom end of the rigid protective sleeve 4, and a through hole is opened in the center of the bottom cover 6. A top cover 7 is detachably connected to the top end of the rigid protective sleeve 4, and a GPS placement box 9 is detachably connected to the center of the bottom end of the top cover 7. A GPS locator 11 is installed inside the GPS placement box 9. The through hole allows the probe of the ultrasonic receiver 8 to extend out of the rigid protective sleeve 4, enabling it to receive ultrasonic waves more accurately.

[0033] Furthermore, the top end of the rigid protective sleeve 4 is provided with a groove that matches the top cover 7. When the top cover 7 is on the rigid protective sleeve 4, the top surface of the rigid protective sleeve 4 is flush with the top surface of the top cover 7.

[0034] Furthermore, the bottom end of the top cover 7 is fixedly connected to an annular protrusion 10, the GPS placement box 9 is located inside the annular protrusion 10, and the rigid protective sleeve 4 is symmetrically provided with top cover fixing screws 2 on both sides. The top cover fixing screws 2 pass through the rigid protective sleeve 4 and are threadedly connected to the rigid protective sleeve 4. The end of the top cover fixing screw 2 near the annular protrusion 10 is threadedly connected to the annular protrusion 10, and the end of the top cover fixing screw 2 away from the annular protrusion 10 is fixedly connected to a first handle ring 27.

[0035] Furthermore, in order to facilitate fixing the device in a designated position, a connecting ring 3 is fixedly connected to the rigid protective sleeve 4. There are three pairs of connecting rings 3, which are evenly distributed along the length of the rigid protective sleeve, and the corresponding connecting rings 3 are symmetrical about the central axis of the rigid protective sleeve 4.

[0036] Furthermore, in order to facilitate the activation of the ultrasonic receiver by the magnetic rod to transmit the ultrasonic signal stored therein to the mobile device via Bluetooth, four signal collection ports 5 are provided at the bottom of the rigid protective sleeve 4, and the four signal collection ports 5 are distributed at equal intervals along the circumference.

[0037] Furthermore, the GPS placement box 9 is detachably connected to the top cover 7 via fastening bolts 12.

[0038] Furthermore, the GPS placement box 9 has symmetrical protrusions fixedly connected on both sides, and the protrusions have first bolt holes. The bottom of the top cover 7 has a second bolt hole corresponding to the first bolt hole. The fastening bolt 12 fixes the GPS placement box 9 and the top cover 7 together with the first bolt hole and the second bolt hole.

[0039] Furthermore, to ensure good sealing performance, a rubber sealing ring is fixedly connected to the top of the GPS placement box 9.

[0040] Furthermore, the signal collection port 5 is rectangular in shape, with a length of 30-40mm and a width of 20-30mm.

[0041] Furthermore, the rigid protective sleeve 4 is a cylindrical stainless steel sleeve with a wall thickness of 8-12mm. The rigid protective sleeve 4 is made of stainless steel with a wall thickness of 8-12mm, which not only enhances the wear resistance and corrosion resistance of the device, but also increases the weight, allowing the entire device to be placed in the designated water layer.

[0042] Furthermore, the through hole is circular in shape, with a diameter of 25-30 mm.

[0043] Furthermore, in order to facilitate the removal of the top cover 7 from the rigid protective sleeve 4, a second handle ring 1 is fixedly connected to the center of the top of the top cover 7.

[0044] Specific implementation method: First, place the GPS locator 11 into the GPS placement box 9, and then fix the GPS placement box 9 to the bottom of the top cover 7 with fastening screws. Since the top of the GPS placement box 9 is equipped with a sealing rubber ring, the GPS placement box 9 can be sealed when it is fixed to the bottom of the top cover 7, and the GPS locator 11 will not be damaged due to poor sealing.

[0045] After fixing, place the ultrasonic receiver 8 into the rigid protective sleeve 4. The probe at the bottom of the ultrasonic receiver 8 extends out from the through hole in the bottom cover 6. Align the top cover 7 with the groove on the top of the rigid protective sleeve 4 that matches the top cover 7. At this time, the threaded hole on the annular protrusion 10 corresponds to the threaded hole on the rigid protective sleeve 4. Fix the top cover 7 to the rigid protective sleeve 4 with the top cover fixing screw 2.

[0046] Using a real-time positioning and protection device for fish migration trajectory according to the present invention, an ultrasonic tracking study of fish migration was conducted in a large artificial water conveyance channel.

[0047] Step 1: Deploy 10 ultrasonic receivers 8 from south to north along the channel. Place the ultrasonic receivers 8 into the device of the present invention and fix the ultrasonic receivers 8 to the side of the channel using steel wire ropes through connecting rings 3. The interval between each ultrasonic receiver 8 is 25-30 km.

[0048] Step Two: After 50 grass carp with implanted ultrasonic tags are released into the channel water in batches and in different areas, an ultrasonic signal is emitted every 45 seconds. When a tagged grass carp enters the receiving range of the ultrasonic receiver 8, the signal is recorded, and the location information of the grass carp is also determined.

[0049] Step 3: After the study is completed, the ultrasonic signal information and positioning information collected by each ultrasonic receiver 8 are exported. GIS and BIM technologies are used to visualize and dynamize these two signals, so as to more intuitively display the migration trajectory of grass carp in the channel.

[0050] Example 2

[0051] like Figure 5-8 As shown, the difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, two pairs of auxiliary stabilizing mechanisms are fixedly connected to the rigid protective sleeve 4. The two pairs of auxiliary stabilizing mechanisms are located between two adjacent connecting rings 3, and the two pairs of auxiliary stabilizing mechanisms and the three pairs of connecting rings 3 are on the same vertical line.

[0052] The auxiliary stabilizing mechanism includes a power unit, a transmission unit, and a swinging unit. The transmission unit is connected to the power unit, and the swinging unit is connected to the transmission unit.

[0053] The power unit includes a power box 13. Four water inlets are provided on the outer wall of one side of the power box 13, and four water outlets are provided on the outer wall of the other side of the power box 13. The four water inlets and four water outlets are distributed at equal intervals along the circumference. A first rotating shaft 24 is rotatably connected inside the power box 13. Four blades 14 are fixedly connected to the outer wall of the first rotating shaft 24. The four blades 14 are distributed at equal intervals along the circumference.

[0054] The transmission unit includes a transmission box 15 fixedly connected to the outlet side of the power box 13. A second rotating shaft 23 is rotatably connected to the top of the transmission box 15. The second rotating shaft 23 is shaft-connected to the first rotating shaft 24. A coupling 22 is fixedly connected to the end of the second rotating shaft 23 away from the first rotating shaft 24. A reciprocating screw 17 is fixedly connected to the end of the coupling 22. A slider 16 is threaded on the reciprocating screw 17. Connecting rods 21 are symmetrically arranged on both sides of the reciprocating screw 17. One end of the connecting rod 21 is fixedly connected to the slider 16. A fixing plate 18 is rotatably connected to the end of the reciprocating screw 17. The side wall of the fixing plate 18 is fixedly connected to the inner wall of the transmission box 15. The other end of the connecting rod 21 passes through the fixing plate 18 and the transmission box 15 and is fixedly connected to the swinging part. The connecting rod 21 is slidably connected to both the fixing plate 18 and the transmission box 15.

[0055] The oscillating part includes a transmission frame 20 fixedly connected to the end of the connecting rod 21 away from the slider 16. The transmission frame 20 has symmetrically arranged oscillating components at both ends. Each oscillating component includes a fixed block 30 fixedly connected to the end of the transmission frame 20. Fixed rods 28 are symmetrically arranged on both sides of the fixed block 30. A sliding sleeve 26 is slidably sleeved on the fixed rod 28. A third rotating shaft 29 is arranged between the sliding sleeve 26 and the fixed block 30. The sliding sleeve 26 is rotatably connected to the fixed block 30 through the third rotating shaft 29. A hinge shaft 25 is fixedly connected to the end of the fixed rod 28 away from the fixed block 30. The hinge shaft 25 is hinged to the outer wall of the transmission box 15. An oscillating paddle 19 is fixedly connected to the hinge shaft 25.

[0056] Detailed implementation method: The usage method is the same as in Embodiment 1. The difference from Embodiment 1 is that the device in Embodiment 2 is sent underwater in the direction of the water flow. Under the action of the water flow, the blade 14 drives the first rotating shaft 24 to rotate. The first rotating shaft 24 drives the second rotating shaft 23 to rotate. The second rotating shaft 23 drives the reciprocating screw 17 to rotate through the coupling 22. The reciprocating screw 17 drives the slider 16 to reciprocate linearly. The slider 16 drives the connecting rod 21 fixed to it to reciprocate linearly, which in turn drives the transmission frame 20 to reciprocate linearly. The transmission frame 20 drives the fixed block 30 to reciprocate linearly, which in turn drives the sliding sleeve 26 to move. The sliding sleeve 26 drives the fixed rod 28 to move, realizing the reciprocating oscillation of the oscillating paddle 19.

[0057] In water, the current causes the ultrasonic receiver to sway, making it difficult to keep the probe vertical. If the probe cannot remain vertical, the received ultrasonic signal will be deviated, or even not received at all, thus affecting the accuracy of the research data. The auxiliary stabilization mechanism provides a thrust opposite to the direction of the water flow to the device of this invention, thereby making the device more stable and preventing it from swaying with the water flow. This ensures that the probe of the ultrasonic receiver remains vertical. Furthermore, the auxiliary stabilization mechanism automatically adjusts the magnitude of the thrust according to the water flow velocity, greatly ensuring the accuracy of the research data. The transmission box 15 is conical on the side near the power box 13, which not only speeds up the passage of water but also reduces resistance.

[0058] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0059] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A real-time positioning and protection device for fish migration trajectories, characterized in that: The system includes a cylindrical stainless steel rigid protective sleeve (4) with a wall thickness of 8-12mm; a bottom cover (6) is fixedly connected to the bottom end of the rigid protective sleeve (4), and a circular through hole with a diameter of 25-30mm is opened in the center of the bottom cover (6); a top cover (7) is detachably connected to the top end of the rigid protective sleeve (4), and a GPS placement box (9) is detachably connected to the center of the bottom end of the top cover (7), and a GPS locator (11) is installed in the GPS placement box (9), and the GPS placement box (9) is coaxially arranged with the through hole; The outer wall of the rigid protective sleeve (4) is fixedly connected with three pairs of connecting rings (3). The three pairs of connecting rings (3) are evenly distributed along the length direction of the rigid protective sleeve (4), and each pair of connecting rings (3) is symmetrical about the central axis of the rigid protective sleeve (4). The bottom of the rigid protective sleeve (4) is provided with four signal collection ports (5). The four signal collection ports (5) are evenly distributed along the circumference. The signal collection ports (5) are rectangular, with a length of 30-40mm and a width of 20-30mm. The outer wall of the rigid protective sleeve (4) is fixedly connected with two pairs of auxiliary stabilizing mechanisms. The two pairs of auxiliary stabilizing mechanisms are located between two adjacent connecting rings (3), and the two pairs of auxiliary stabilizing mechanisms and the three pairs of connecting rings (3) are on the same vertical line. The auxiliary stabilizing mechanisms are used to generate an adaptive thrust opposite to the impact direction of the water flow through water flow drive, so as to maintain the vertical attitude of the device in the water flow. The auxiliary stabilizing mechanism includes a power unit, a transmission unit, and a swinging unit. The transmission unit is driven by the power unit, and the swinging unit is driven by the transmission unit. The power unit includes a power box (13). Four water inlets are provided on the outer wall of one side of the power box (13), and four water outlets are provided on the outer wall of the other side of the power box (13). The four water inlets and four water outlets are distributed at equal intervals along the circumference. A first rotating shaft (24) is rotatably connected inside the power box (13). Four blades (14) are fixedly connected to the outer wall of the first rotating shaft (24). The four blades (14) are distributed at equal intervals along the circumference. Water flows through the water inlets and impacts the blades (14), causing the first rotating shaft (24) to rotate. The transmission unit includes a transmission box (15) fixedly connected to the outlet side of the power box (13). A second rotating shaft (23) is rotatably connected to the top of the transmission box (15). The second rotating shaft (23) is coaxially fixedly connected to the first rotating shaft (24). A coupling (22) is fixedly connected to the end of the second rotating shaft (23) away from the first rotating shaft (24). A reciprocating screw (17) is fixedly connected to the end of the coupling (22). A slider (16) is threaded on the reciprocating screw (17). A connecting rod (21) is symmetrically arranged on both sides of the reciprocating screw (17). One end of the connecting rod (21) is fixedly connected to the slider (16). A fixed plate (18) is rotatably connected to the end of the reciprocating screw (17). The side wall of the fixed plate (18) is fixedly connected to the inner wall of the transmission box (15). The other end of the connecting rod (21) passes through the fixed plate (18) and the transmission box (15) and is fixedly connected to the swing part. The connecting rod (21) is slidably connected to the fixed plate (18) and the transmission box (15). The swinging part includes a transmission frame (20) fixedly connected to the end of the connecting rod (21) away from the slider (16). The transmission frame (20) has swinging members symmetrically arranged at both ends. The swinging members include a fixed block (30) fixedly connected to the end of the transmission frame (20). Fixed rods (28) are symmetrically arranged on both sides of the fixed block (30). A sliding sleeve (26) is slidably sleeved on the fixed rod (28). A third rotating shaft (29) is arranged between the sliding sleeve (26) and the fixed block (30). The sliding sleeve (26) is rotatably connected to the fixed block (30) through the third rotating shaft (29). A hinge shaft (25) is fixedly connected to the end of the fixed rod (28) away from the fixed block (30). The hinge shaft (25) is hinged to the outer wall of the transmission box (15). A swinging paddle (19) is fixedly connected to the hinge shaft (25).

2. The real-time positioning and protection device for fish migration trajectory according to claim 1, characterized in that: The bottom end of the top cover (7) is fixedly connected to an annular protrusion (10), and the GPS placement box (9) is located inside the annular protrusion (10). The upper two sides of the rigid protective sleeve (4) are symmetrically provided with top cover fixing screws (2). The top cover fixing screws (2) penetrate the side wall of the rigid protective sleeve (4) and are threadedly connected to the rigid protective sleeve (4). The inner end of the top cover fixing screws (2) is threadedly connected to the annular protrusion (10), and the outer end of the top cover fixing screws (2) is fixedly connected to a first handle ring (27).

3. The real-time positioning and protection device for fish migration trajectory according to claim 1, characterized in that: The GPS placement box (9) is detachably connected to the bottom end of the top cover (7) by fastening bolts (12).

4. The real-time positioning and protection device for fish migration trajectory according to claim 1, characterized in that: The top cover (7) has a second handle ring (1) fixedly connected to its top center.

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