Bait tray dynamic monitoring method and monitoring system

Abstract

The invention belongs to the field of shrimp culture, and discloses a bait tray dynamic monitoring method, which comprises the following steps: firstly, arranging a liftable bait tray, arranging a liquid level sensor on the bait tray, arranging a hydrophone near the bait tray, and enabling the bait tray to sink into the water surface of a preset shrimp pond area; secondly, enabling the bait tray to hover at a preset feeding position under the water surface through a collection signal of a liquid level sensor, collecting shrimp feeding audio in a feeding area containing the bait tray for a first preset time period through a hydrophone, and obtaining a feeding comparison frequency range based on the shrimp feeding audio in the first preset time period; and finally, continuously collecting shrimp ingestion audio frequency through a hydrophone until the frequency of the shrimp ingestion audio frequency is within an ingestion comparison frequency range within a continuous second preset time period, enabling the bait tray to rise, and enabling the bait tray to hover at a preset observation position under the water surface through a liquid level sensor, so as to obtain the amount of residual bait in the bait tray. The invention further discloses a bait tray dynamic monitoring system.

Description

Technical Field

[0001] The invention belongs to the field of shrimp farming, and in particular relates to a bait tray dynamic monitoring method and a monitoring system. Background Art

[0002] In actual shrimp farming activities, real-time monitoring of shrimp growth and the amount of remaining feed after feeding is an indispensable task, which is crucial for feed planning, feeding strategy adjustment, and economic benefit evaluation. Shrimp are benthic aquaculture animals. Due to interference factors such as limited water visibility, monitoring work usually requires the use of bait trays as a farming tool. By raising the bait tray to a position near the water surface, you can effectively observe various farming information such as the amount of residual bait, feces, shrimp vitality, molting, body length and body color. The above information can be combined to evaluate the growth and health status, appetite, and environmental adaptability of shrimp, so that timely management adjustments and treatments can be made.

[0003] Currently, if Figure 1 As shown in the figure, the area where shrimps are fed in the shrimp pond is located in the waters near the shore of the shrimp pond. The specific process of monitoring the bait tray is as follows: the staff sinks the bait tray containing the bait under the water surface near the shore of the shrimp pond, waits for a period of time based on experience (i.e., waits for the shrimps in the shrimp pond to have a feeding activity), and then pulls the bait tray to the water surface. The staff obtains relevant shrimp metabolic information by observing the amount of residual bait on the bait tray, the feces left by the shrimps, and the vitality, molting, body length and body color of the shrimps swimming into the bait tray, and judges the growth status of the shrimp and the rationality of the feeding amount based on experience or intuition, which serves as a basis for adjusting the feeding amount and / or feeding strategy in the future.

[0004] However, the shortcomings of the above implementation methods are also obvious: first, the implementation process is not only cumbersome and inefficient, but also affected by the subjective experience of the staff during observation, which is prone to observation errors, so it is impossible to form a unified standard for measurement; secondly, the period from the sinking of the bait tray to the shrimp's feeding activity cannot be accurately controlled, resulting in premature or late observation. When observing too early, the shrimp has not fully eaten. When observing too late, the estimation of the amount of residual bait is inaccurate due to the dissolution or deterioration of the bait, which in turn has an adverse effect on the accurate formulation of future feeding strategies. There is a study on combining the bait tray lifting device with machine vision technology to collect residual bait information in the existing residual bait detection equipment. However, in addition to observing the amount of residual bait, the adjustment of breeding strategies such as feeding also needs to comprehensively consider factors such as shrimp behavior and body length. Relying solely on machine vision technology is often one-sided, and it is impossible to obtain more sufficient information for formulating feeding strategies. It is not reliable as a basis for adjusting the amount of bait and / or feeding strategies in the future. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a bait tray dynamic monitoring method and monitoring system based on the characteristic that shrimps emit a different sound wave frequency (i.e., feeding frequency) when feeding than when they are idle. The method is not only not affected by the subjective experience of the staff, but also can more accurately control the time from the sinking of the bait tray to the time when the shrimps carry out a feeding activity, thereby serving as a more reliable basis for adjusting the feeding amount and / or feeding strategy in the future.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A method for dynamically monitoring bait in a bait pan, used for pre-determining a shrimp pond area, is characterized by comprising the following steps:

[0008] Step S1: a liftable bait tray is provided, a liquid level sensor is provided on the bait tray, a hydrophone is provided near the bait tray, the liquid level sensor and the hydrophone are connected to the bait tray signal, and the bait tray is sunk into the water surface of a predetermined shrimp pond area;

[0009] Step S2: by collecting signals from the liquid level sensor, the bait tray is suspended at a predetermined feeding position under the water surface, and the audio of shrimp feeding in the feeding area containing the bait tray is collected by a hydrophone for a first predetermined time period, and a feeding comparison frequency range is obtained based on the audio of shrimp feeding in the first predetermined time period;

[0010] Step S3: Continuously collect audio of shrimp feeding through a hydrophone until the frequency of the shrimp feeding audio is within the feeding comparison frequency range for a second predetermined time period. The bait tray rises and is suspended at a predetermined observation position under the water surface through a liquid level sensor, thereby obtaining the residual bait amount in the bait tray.

[0011] Preferably, in step S1, a predetermined amount of bait is placed in a bait tray.

[0012] Preferably, the above method is applied to dynamically monitor the bait consumption in a shrimp pond, wherein the shrimp pond comprises a plurality of predetermined shrimp pond areas, and each predetermined shrimp pond area independently implements the method for dynamically monitoring bait in a bait pan.

[0013] A feed tray bait dynamic monitoring system, characterized in that it includes: a bearing unit, which is arranged near the shore of a predetermined shrimp pond area; a driving unit, which is arranged on the bearing unit, the driving unit includes a cross arm assembly and a bait tray, and the cross arm assembly is used to move the bait tray; a collection assembly, including a liquid level sensor, a hydrophone and a camera; a control unit, which is connected to the liquid level sensor, the hydrophone and the drive unit signal, and is used to drive the drive unit based on the collected data of the liquid level sensor and the hydrophone, so as to move the bait tray.

[0014] Preferably, the driving unit includes a lifting winch and a lifting traction rope driven and coupled by the lifting winch, the cross arm assembly is chain-shaped, including multiple first fixed pulleys arranged along its own extension direction, the lifting winch is arranged on the load-bearing unit, one end of the cross arm assembly is arranged on the load-bearing unit, the telescopic traction rope is coupled to the cross arm assembly through multiple first fixed pulleys, and the bait tray is suspended by the free end of the traction rope.

[0015] Furthermore, the driving unit also includes a telescopic winch wheel and a telescopic traction rope driven and coupled by the telescopic winch wheel, the telescopic winch wheel is arranged on the carrying unit, the free end of the telescopic traction rope is fixedly connected to the free end of the cross arm assembly, the cross arm assembly includes two mutually hinged driving cross arms, the driving cross arms are hollow, and a spring cable extending along its own extension direction is arranged inside the cross arm assembly, the two ends of the spring cable are respectively fixed at the two ends of the cross arm assembly, and the spring cable has a predetermined pre-tension.

[0016] Furthermore, the bearing unit includes a bearing body and a vertically arranged bearing bracket, the cross arm assembly is arranged on the bearing bracket, a second fixed pulley is arranged on the bearing bracket, and the telescopic traction rope is arranged on the second fixed pulley.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Because the bait tray dynamic monitoring system of the present invention, first, a liftable bait tray is set, a liquid level sensor is set on the bait tray, and a hydrophone is set near the bait tray, so that the bait tray is sunk into the water surface of the predetermined shrimp pond area; secondly, through the acquisition signal of the liquid level sensor, the bait tray is suspended at a predetermined feeding position under the water surface, and the audio of shrimp feeding in the feeding area containing the bait tray is collected through the hydrophone for a first predetermined time period, and the feeding comparison frequency range is obtained based on the audio of shrimp feeding in the first predetermined time period; finally, through The hydrophone continuously collects audio of shrimp feeding until the frequency of the audio of shrimp feeding is within the feeding comparison frequency range for a second predetermined period of time. The bait tray rises, and the liquid level sensor makes the bait tray hover at a predetermined observation position under the water surface, thereby obtaining the residual bait amount in the bait tray. The predetermined feeding position is an underwater depth position suitable for shrimp feeding. The predetermined observation position is underwater and close to the water surface for easy observation. Based on the characteristic that shrimps emit a different sound wave frequency (i.e., feeding frequency) when feeding than when they are idle, the bait tray is placed under the water surface. After the tray is put in, the shrimps can be regarded as being idle before the shrimps feed in a concentrated manner. The sound wave frequency of the shrimps at the predetermined feeding position at this time is collected by the hydrophone in the first predetermined time period, and the feeding comparison frequency range is formed by considering the interference factors, that is, the sound wave frequency of the shrimps when they are idle. After the concentrated feeding of the shrimps, the sound wave frequency will change significantly, that is, the sound wave frequency emitted by the shrimps when feeding. The shrimp sound wave frequency collected by the hydrophone will be restored to the feeding comparison frequency range. Considering the interference factors, this sound wave frequency must be within the feeding comparison frequency range in the second predetermined time period, that is, when the shrimps return to idle after a feeding process ends, the shrimp sound wave frequency returns to the sound wave frequency when idle again, thereby accurately and completely reflecting a complete shrimp feeding behavior. Therefore, the present invention is not only not affected by the subjective experience of the staff, but also can more accurately control the period from the sinking of the bait tray to the shrimps performing a feeding activity, and also considers the influence of interference factors, so as to serve as a more reliable basis for adjusting the feeding amount and / or feeding strategy in the future.

[0019] 2. Because in the bait tray dynamic monitoring method of the present invention, a camera is arranged near and just above the bait tray, therefore, when the bait tray is located at a predetermined observation position, the present invention can conveniently display the amount of residual bait on the bait tray, the feces left by the shrimps, the vitality, molting, body length and body color of the shrimps swimming into the bait tray through the camera through a remote terminal, so as to facilitate observation and assist in the comprehensive reference to form a reliable basis for adjusting the amount of bait and / or feeding strategy in the future.

[0020] 3. Because the method of the present invention is used in the dynamic monitoring of bait consumption in shrimp ponds, the shrimp pond includes a plurality of predetermined shrimp pond areas, each predetermined shrimp pond area independently implements a bait tray dynamic monitoring system, and the feeding area for shrimps is a continuously closed annular water area located near the shore of the shrimp pond. The plurality of predetermined shrimp pond areas of the shrimp pond are a plurality of areas of substantially the same area continuously divided by the annular water area. Therefore, the present invention implements the above-mentioned bait tray dynamic monitoring method for each predetermined shrimp pond area separately, and can obtain a more accurate and reliable basis for adjusting the amount of bait and / or feeding strategy in the future by adding and averaging.

[0021] 4. Because the bait tray dynamic monitoring system of the present invention includes a bearing unit, a driving unit, a collection component and a control unit, the bearing unit is arranged near the shore of the predetermined shrimp pond area; the driving unit is arranged on the bearing unit, including a cross arm component and a bait tray, and the cross arm component is used to move the bait tray; the collection component includes a liquid level sensor, a hydrophone and a camera; the control unit is connected to the liquid level sensor, the hydrophone and the driving unit signal, and is used to drive the driving unit based on the collected data of the liquid level sensor and the hydrophone, so as to move the bait tray. Therefore, the present invention can better implement the bait tray dynamic monitoring method through the bait tray dynamic monitoring system.

[0022] 5. Because the driving unit of the present invention includes a lifting winch, a lifting traction rope, a telescopic winch wheel and a telescopic traction rope, the cross arm assembly is in a chain shape, including a plurality of first fixed pulleys arranged along its own extension direction, the lifting winch and the telescopic winch wheel are both arranged on the bearing unit, one end of the cross arm assembly is arranged on the bearing unit, the telescopic traction rope is coupled to the cross arm assembly through a plurality of first fixed pulleys, the bait tray is suspended through the free end of the traction rope, the free end of the telescopic traction rope is fixedly connected to the free end of the cross arm assembly, the cross arm assembly has two mutually hinged driving cross arms, and the driving The movable cross arm is hollow, and a spring cable extending along the extension direction of the cross arm assembly is arranged inside the cross arm assembly. The two ends of the spring cable are respectively fixed on the two ends of the cross arm assembly, and the spring cable has a predetermined pre-tension. Therefore, the present invention can easily realize the lifting and lowering of the bait tray, and the movement close to and away from the shore of the shrimp pond through two sets of winch and traction mechanisms. When the bait tray is away from the shore of the shrimp pond, the bait tray can be sunk into or lifted out of the water by lifting the bait tray; when the bait tray is close to the shore of the shrimp pond, the staff can directly operate the bait tray such as adding bait. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A real-life picture of the implementation and monitoring of bait tray feeding in existing shrimp ponds;

[0024] Figure 2 A schematic diagram of the steps of a bait tray dynamic monitoring method according to an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of a bait tray dynamic monitoring system according to an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a load-bearing vehicle body and a load-bearing bracket according to an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of a drive unit and a cross arm unit according to an embodiment of the present invention Figure 1 ;

[0028] Figure 6 Schematic diagram of a drive unit and a cross arm unit according to an embodiment of the present invention Figure 2 ;

[0029] Figure 7 It is an implementation diagram of a spring cable according to an embodiment of the present invention;

[0030] In the figure: S100, bait tray dynamic monitoring method, 100, bait tray dynamic monitoring system, 10, load-bearing unit, 11, load-bearing body, 11a, universal wheel, 12, load-bearing bracket, 13, power supply, 20, drive unit, 21, cross arm assembly, 211, first fixed pulley, 212, drive cross arm, 213, spring cable, 213a, pre-stressed spring, A, arm head, 22, bait tray, 23, second fixed pulley, 24, lifting winch, 25, lifting traction rope, 26, telescopic winch wheel, 26a, manual winch, 27, telescopic traction rope, 30, collection assembly, 31, liquid level sensor, 32, hydrophone, 33, camera, 40, control unit. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following examples and drawings specifically illustrate the dynamic monitoring method and monitoring system of the bait tray of the present invention. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0032] like Figure 2 As shown, the bait tray dynamic monitoring method S100 in this embodiment is used for a predetermined shrimp pond area. Specifically, the shrimp pond includes multiple predetermined shrimp pond areas, each predetermined shrimp pond area independently implements a bait tray dynamic monitoring system, all the predetermined shrimp pond areas are continuously adjacent and closed, and the sum of all the predetermined shrimp pond areas covers the area where all shrimp ponds are baited. The distance between this area and the shore of the shrimp pond is basically equal, and this area is a closed annular area.

[0033] The bait tray dynamic monitoring method S100 comprises the following steps:

[0034] Step S1: Set up a liftable bait tray, set up a liquid level sensor on the bait tray, set up a hydrophone near the bait tray, connect the liquid level sensor and the hydrophone to the bait tray signal, and sink the bait tray into the water surface of the predetermined shrimp pond area.

[0035] In step S1, a predetermined amount of bait is placed in a bait tray, and a camera is set just above and near the bait tray.

[0036] Specifically, the visual axis of the camera is directed toward the bait tray.

[0037] Step S2: by collecting signals from the liquid level sensor, the bait tray is suspended at a predetermined feeding position under the water surface, and the audio of shrimp feeding in the feeding area containing the bait tray is collected for a first predetermined time period through a hydrophone, and a feeding comparison frequency range is obtained based on the audio of shrimp feeding in the first predetermined time period.

[0038] Specifically, the liquid level sensor is fixed on the bait tray by a fixed structure, so that when the bait tray is located in the water body of the shrimp pond, the distance between the bait tray and the water surface can be obtained in real time through the liquid level sensor. The predetermined feeding position is a depth position suitable for the shrimps in the shrimp pond to feed on the bait tray. The area formed by the shrimps feeding activities at this depth position is the feeding area. Based on the experience in this field, when the bait tray just stops at the predetermined feeding position and the time is less than the first predetermined time period, the shrimps in the shrimp pond have not yet had time to swim into the feeding area for concentrated feeding, so that the first predetermined time period can be equated to the state when the shrimps are idle and not feeding. At this time, the sound wave frequency emitted by the shrimps corresponds to the sound wave frequency emitted by the shrimps that are idle and not feeding. Considering the existence of interference items, the sound wave frequency is a range value, that is, a feeding comparison frequency range that characterizes the shrimps that are idle and not feeding is formed.

[0039] Step S3: Continuously collect audio of shrimp feeding through a hydrophone until the frequency of the shrimp feeding audio is within the feeding comparison frequency range for a second predetermined time period. The bait tray rises and is suspended at a predetermined observation position under the water surface through a liquid level sensor, thereby obtaining the residual bait amount in the bait tray.

[0040] Specifically, after the first predetermined time period, the shrimps in the shrimp pond swim into the feeding area for concentrated feeding. At this time, the sound wave frequency emitted by the shrimps is significantly different from the feeding comparison frequency range, corresponding to the sound wave frequency emitted by the shrimps performing feeding activities in the feeding area, and when the feeding activities are over, the sound wave frequency emitted by the shrimps in the feeding area will enter the feeding comparison frequency range again. Considering the existence of interference items, the sound wave frequency emitted by the shrimps at this time should continue to fall within the feeding comparison frequency range within the second predetermined time period, which can be equivalent to the state when the shrimps have finished feeding and are idle again without feeding. At this time, the bait tray is raised to a predetermined observation position close to the water surface, so that the camera can clearly obtain the amount of residual bait in the bait tray, the feces left by the shrimps, and the vitality, molting, body length and body color status of the shrimps swimming into the bait tray for visualization, thereby obtaining relevant metabolic information of the shrimps in the predetermined shrimp pond area, which can serve as a reliable basis for adjusting the feeding amount and / or feeding strategy in the future.

[0041] like Figure 3 As shown, the bait tray dynamic monitoring system 100 is used to implement the bait tray dynamic monitoring method S100, and includes a carrying unit 10, a driving unit 20, a collection component 30 and a control unit 40.

[0042] The carrying unit 10 is arranged near the bank of a predetermined shrimp pond area, and comprises a carrying body 11 , a carrying bracket 12 and a power supply 13 .

[0043] Specifically, Figure 4 As shown, the support bracket 12 is arranged on the support body 11, the support body 11 has a universal wheel 11a at the bottom, and the support body 11 is arranged vertically. In this embodiment, the support body 11 is an aluminum alloy frame structure, and the support bracket 12 is a vertically arranged aluminum alloy rod.

[0044] Specifically, a power supply 13 is provided on the load-bearing body 11 for providing electric energy.

[0045] The driving unit 20 is disposed on the carrying unit 10 , and includes a cross arm assembly 21 , a bait tray 22 , a second fixed pulley 23 , a lifting winch 24 , a telescopic traction rope 25 , a telescopic winch wheel 26 , and a telescopic traction rope 27 .

[0046] like Figures 5 to 7 As shown, the cross arm assembly 21 is chain-shaped, one end of which is arranged on the supporting bracket 12 through a fixed seat (not shown in the drawings). The cross arm assembly 21 includes a first fixed pulley 211, a driving cross arm 212 and a spring cable 213.

[0047] There are two driving cross arms 212 and they are hinged in sequence through the ends. The driving cross arms 212 are hollow and each driving cross arm 212 is provided with an arm head A. The spring cable 213 is arranged inside the driving cross arm 212, that is, inside the cross arm assembly 21 and extends along the extension direction of the two driving cross arms 212. The two ends of the spring cable 213 are respectively fixed at the two ends inside the cross arm assembly 21 through the arm head A, and the spring cable 213 has a predetermined pre-tension. Specifically, the end of the spring cable 213 is a pre-stressed spring 213a, so that the spring cable 213 has a pre-tension.

[0048] There are multiple first fixed pulleys 211 , and the first fixed pulleys 211 are arranged on the driving cross arm 212 along the extending direction of the driving cross arm 212 .

[0049] The second fixed pulley 23 is located on the supporting bracket 12 .

[0050] The lifting winch 24 is arranged on the carrying body 11, and the lifting traction rope 25 is led out from the lifting winch 24 and driven and coupled. The lifting traction rope 25 is coupled to the cross arm assembly 21 through multiple first fixed pulleys 211. The bait tray 22 is suspended by the free end of the lifting traction rope 25 at the end of the cross arm assembly 21 away from the carrying unit 10. Specifically, the lifting winch 24 is powered and rotated by the power supply 13.

[0051] The telescopic winch wheel 26 is arranged on the load-bearing bracket 12, and the lifting traction rope 27 is led out from the telescopic winch wheel 26 and driven and coupled. The telescopic traction rope 27 is arranged on the second fixed pulley 23, and the free end of the telescopic traction rope 27 is fixedly connected to the free end of the cross arm assembly 21. The free end of the cross arm assembly 21 is the end of the cross arm assembly 21 away from the load-bearing unit 10. In this embodiment, the telescopic winch wheel 26 also has a manual winch 26a, and the staff rotates the telescopic winch wheel 26 through the manual winch 26a.

[0052] Specifically, when the lifting winch 24 rotates, the lifting winch 24 reels in or releases the lifting traction rope 25 through the cross arm assembly 21, thereby being able to sink the bait tray 22 into the water body or lift it out of the water body; when the telescopic winch wheel 26 is rotated by an external force, the telescopic winch wheel 26 causes the two driving cross arms 212 to fold relative to each other by pulling the arm head A, thereby making the bait tray 22 close to the shore of the shrimp pond; when the external force is released, the two driving cross arms 212 return to a straight state under the elastic restoring force of the internal spring cable 213, so that the bait tray 22 is located directly above the predetermined shrimp pond area.

[0053] The acquisition component 30 includes a liquid level sensor 31 , a hydrophone 32 and a camera 33 .

[0054] The control unit 40 is signal-connected to the liquid level sensor 31 , the hydrophone 32 , the camera 33 and the drive unit 20 , and is used to drive the drive unit 20 based on the collected data of the liquid level sensor 31 and the hydrophone 32 , so that the bait tray 22 moves, and image data is obtained through the camera 33 .

[0055] Specifically, located near the carrying unit 10, the collection component 30 is communicatively connected with the control unit 40 through wiring. The control unit 40 has a control unit and a display screen (not shown in the drawings). The control unit has a memory and a processor. Several control programs are stored in the memory. When the processor executes the control program, the bait tray dynamic monitoring system 100 implements the bait tray dynamic monitoring method S100.

[0056] The above-mentioned implementation modes are preferred cases of the present invention and are not used to limit the protection scope of the present invention. Various deformations or modifications that can be made by ordinary technicians in this field without creative work within the scope of the attached claims are still within the protection scope of this patent.

Claims

1. A method for dynamic monitoring of bait trays, used for pre-determining shrimp pond areas, characterized in that: The following steps are involved: Step S1: a liftable bait tray is provided, a liquid level sensor is provided on the bait tray, a hydrophone is provided near the bait tray, the liquid level sensor and the hydrophone are both connected to the bait tray signal, and the bait tray is sunk into the water surface of the predetermined shrimp pond area; Step S2: by collecting signals from the liquid level sensor, the bait tray is suspended at a predetermined feeding position under the water surface, and the audio of shrimp feeding in the feeding area containing the bait tray is collected by the hydrophone for a first predetermined time period, and a feeding comparison frequency range is obtained based on the audio of shrimp feeding in the first predetermined time period; Step S3: continuously collecting the audio of the shrimp feeding through the hydrophone until the frequency of the shrimp feeding audio is within the feeding comparison frequency range for a second predetermined time period, the bait tray rises, and the liquid level sensor is used to make the bait tray hover at a predetermined observation position under the water surface, thereby obtaining the residual bait amount in the bait tray.

2. The method for dynamic monitoring of bait tray according to claim 1, characterized in that: in, In step S1, a predetermined amount of bait is placed in the bait tray.

3. The method for dynamic monitoring of bait tray according to claim 1, characterized in that: in, A camera is arranged just above and near the bait tray.

4. Application of the method according to any one of claims 1 to 3 in dynamically monitoring bait consumption in a shrimp pond, wherein the shrimp pond comprises a plurality of the predetermined shrimp pond areas, and each of the predetermined shrimp pond areas independently implements the bait tray dynamic monitoring method.

5. A bait tray dynamic monitoring system implementing the method described in any one of claims 1 to 3, characterized in that: include: A carrying unit is arranged near the shore of the predetermined shrimp pond area; A driving unit, arranged on the bearing unit, the driving unit comprising a cross arm assembly and the bait tray, the cross arm assembly being used to move the bait tray; A collection component, including the liquid level sensor, the hydrophone and the camera; A control unit is connected to the liquid level sensor, the hydrophone and the drive unit signal, and is used to drive the drive unit based on the collected data of the liquid level sensor and the hydrophone, so that the bait tray moves.

6. The bait tray dynamic monitoring system according to claim 5, characterized in that: in, The driving unit includes a lifting winch and a lifting traction rope driven and coupled by the lifting winch. The cross arm assembly is chain-shaped and includes a plurality of first fixed pulleys arranged along its extension direction. The lifting winch is arranged on the bearing unit, one end of the cross arm assembly is arranged on the bearing unit, the telescopic traction rope is coupled to the cross arm assembly through the plurality of first fixed pulleys, and the bait tray is suspended through the free end of the traction rope.

7. The bait tray dynamic monitoring system according to claim 6, characterized in that: in, The driving unit further comprises a telescopic winch wheel and a telescopic traction rope driven and coupled by the telescopic winch wheel. The telescopic winch wheel is arranged on the carrying unit, and the free end of the telescopic traction rope is fixedly connected to the free end of the cross arm assembly. The cross arm assembly includes two mutually hinged driving cross arms, the driving cross arms are hollow, and a spring cable extending along its own extension direction is arranged inside the cross arm assembly. The two ends of the spring cable are respectively fixed on the two ends of the cross arm assembly, and the spring cable has a predetermined pre-tension.

8. The bait tray dynamic monitoring system according to claim 7, characterized in that: in, The load-bearing unit comprises a load-bearing body and a vertically arranged load-bearing bracket. The cross arm assembly is arranged on the bearing bracket, a second fixed pulley is arranged on the bearing bracket, and the telescopic traction rope is arranged on the second fixed pulley.

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