CN112362899B - Breeding cage wake environment monitoring device - Google Patents
Breeding cage wake environment monitoring device Download PDFInfo
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- CN112362899B CN112362899B CN202011073831.3A CN202011073831A CN112362899B CN 112362899 B CN112362899 B CN 112362899B CN 202011073831 A CN202011073831 A CN 202011073831A CN 112362899 B CN112362899 B CN 112362899B
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- 238000012806 monitoring device Methods 0.000 title claims description 7
- 238000009395 breeding Methods 0.000 title description 2
- 230000001488 breeding effect Effects 0.000 title description 2
- 238000012360 testing method Methods 0.000 claims abstract description 51
- 238000012544 monitoring process Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000009360 aquaculture Methods 0.000 claims description 11
- 244000144974 aquaculture Species 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000013522 software testing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 239000009270 zilongjin Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
- G01P5/06—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes
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Abstract
The invention discloses a device for monitoring the wake environment of a culture net cage, which comprises a monitoring platform. The upper part of the monitoring platform is a deck, the lower part of the deck is fixedly connected with two first plates, and the two first plates and the deck enclose a test water channel; a floating body is fixedly connected below the first plate; the deck is connected with a netting fixing frame which is arranged above the inlet of the test water channel; a propeller current meter is fixedly connected in the test water channel; the propeller current meter comprises a body frame, and the top of the body frame is fixedly connected with the deck; the body frame is connected with a current meter main body, the current meter main body is arranged in parallel with the deck and is provided with a paddle on one side of an inlet of the test water channel, and the current meter main body is provided with an empennage on one side of an outlet of the test water channel. The method has the technical effects of improving the accuracy of test data, improving the stability of a monitoring platform and improving the test efficiency of the netting structure.
Description
Technical Field
The invention relates to a monitoring device, in particular to a device for monitoring the wake environment of a culture net cage.
Background
With the development of modern aquaculture, cage culture is gradually moving towards deep sea. The ratio of human intervention is greatly reduced in deep sea culture, so the wake environment of the culture net cage is particularly important for the deep sea culture. In the prior art, monitoring of the wake environment of the aquaculture net cage mainly comprises the steps of installing the net cage for testing in advance, placing a monitoring platform carrying a sensor in a water body in the net cage, and judging whether a site is suitable for deep sea aquaculture and whether a net structure is suitable for the site by testing the wake environment data of a net with a specific structure in a specific aquaculture site. The technical problems that firstly, most of the existing monitoring platforms use cone-like, hemispherical or cylindrical structures, the splash areas of the monitoring platforms with the structures are large in size, weak in wind and wave resistance and poor in stability, and therefore related data collected by the sensors have measurement errors under the influence of the monitoring platforms; secondly, one detection device can only test one netting structure at the same time, and the efficiency is poor.
In order to solve the technical problem of stability of the monitoring platform, the prior art with the publication number of CN101734357B is taken as an example, the technical scheme discloses an offshore monitoring platform with a small waterplane area catamaran structure, and the stability of the monitoring platform can be improved through the structure of the double floating bodies. However, the technical problem existing in the technical scheme is that although the natural frequency including heave, roll and pitch can be reduced by using the structure, the monitoring platform is always in a flow field environment and still resonates with the wave period to influence the stability of the platform.
Disclosure of Invention
The invention aims to provide a device for monitoring the wake environment of a culture net cage, which has the technical effects of improving the accuracy of test data, improving the stability of a monitoring platform and improving the test efficiency of a netting structure.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a device for monitoring the wake environment of a culture cage comprises a monitoring platform. The upper part of the monitoring platform is a deck, the lower part of the deck is fixedly connected with two first plates, and the two first plates and the deck enclose a test water channel; a floating body is fixedly connected below the first plate; the deck is connected with a netting fixing frame which is arranged above the inlet of the test water channel; a propeller current meter is fixedly connected in the test water channel; the propeller current meter comprises a body frame, and the top of the body frame is fixedly connected with the deck; the body frame is connected with a current meter main body, the current meter main body is arranged in parallel with the deck and is provided with a paddle on one side of an inlet of the test water channel, and the current meter main body is provided with an empennage on one side of an outlet of the test water channel.
The structure of the monitoring platform adopted by the invention is a small waterplane area catamaran structure, namely, the monitoring platform comprises a left floating body, a right floating body, a deck and a first plate for connecting the left floating body and the right floating body. The first plates are used for connection instead of the long and thin strut structure which is often adopted in a small waterplane area catamaran structure, and the purpose of the invention is to create a relatively isolated test environment in a certain space and obtain relatively accurate test data. Specifically, the relatively isolated test water channel surrounded by the first plate and the deck is utilized, the internal flow field is arranged in the water channel, the external flow field is arranged outside the water channel, and hydrological data collected in the internal flow field can be prevented from being directly influenced by the external flow field, so that the accuracy of test data can be improved.
The invention can improve the stability of the monitoring platform mainly by changing the flow velocity and the water flow direction of the internal flow field. Different flow velocity and water flow direction mean that the magnitude and direction of the acting force applied to the monitoring platform by the internal flow field and the external flow field are different, and the possibility of mutual offset exists; in addition, when being in two flow fields that flow velocity and rivers direction are different simultaneously, compare and be in a flow field, can reduce the resonance influence that the monitoring platform received, consequently, can promote monitoring platform stability. Specifically, the netting fixing frame is provided with the netting with a specific structure before testing, external water flow flows into the testing water channel through the netting, the flow speed is reduced through attenuation of the netting, when the water flow acts on the paddle of the propeller-type current meter, the paddle is driven to rotate, the flow speed and the direction of the water flow are changed under the influence of the paddle, and the changed water flow continuously collides with the tail fin and the testing channel and finally flows out of the testing channel.
Preferably, the bottom of the body frame is fixedly connected with a stabilizing wing plate, and the stabilizing wing plate is parallel to the deck.
The stability of monitoring platform can further be improved to the stable pterygoid lamina, when monitoring platform takes place relative motion on six degrees of freedom, all need overcome the resistance that produces between stable pterygoid lamina and the water.
Preferably, the deck is provided with a plurality of anchor bolts, and the number of the anchor bolts is at least two; the anchor bolts are fixedly connected to two sides of the deck connected with the first plate and are symmetrically arranged; the anchor bolt is connected with an anchor chain, and the other end of the anchor chain is connected with an anchor.
The ship anchors are symmetrically arranged on two sides of the deck and are mainly used for stably monitoring the platform, when the direction of the test water channel is consistent with the water flow direction, the ship anchors on two sides are put down, the platform can be prevented from rotating, and particularly when the number of the ship anchors on one side is larger than or equal to two, the rotation preventing effect is more obvious. The ship anchor is arranged on two sides of the deck connected with the first plate, and interference of the ship anchor on test data is mainly eliminated.
Preferably, a second plate is arranged below the deck, the second plate is positioned between the first plates and divides the test water channel into a plurality of channels, and the number of the divided channels is one more than that of the second plates; the cut channels are provided with netting fixing frames above the inlets, and propeller current meters are arranged in the channels.
By arranging the second plate between the first plates, the test water channel can be divided to form a plurality of parallel water channels. Through the design of this kind of multirow passageway, can test the netting of different structures simultaneously to promote efficiency of software testing, reduce whole activity time. In addition, an external flow field flows into different water channels through the nettings with different structures to form flow fields with different flow rates and directions, so that the flow field environment of the monitoring platform is more complex, and the resonance influence on the monitoring platform can be further reduced.
Preferably, the netting fixing frame is fixedly connected with a camera device, and a lens of the camera device is vertically downward; the netting fixing frame is provided with more than two netting connecting positions, the netting connecting positions are all located on the same straight line, and the straight line is parallel to the deck, perpendicular to the first plate and located on the same plane with the camera lens of the camera device.
The netting wake flow data collected by the invention mainly comprises two parts, namely, flow velocity information collected by a propeller current meter; and the pose image of the netting in water provided by the camera device. In addition, the connecting positions of the netting are positioned on the same straight line, so that the netting to be tested can be perpendicular to the deck, the first plate and the second plate at the same time, and the netting to be tested is always in a state of stream.
Preferably, the first plates and the second plates are arranged in parallel and perpendicular to the deck, and the perpendicular distances between the adjacent first plates and the adjacent second plates are consistent.
Preferably, a data acquisition device is fixedly connected above the deck; the body frame component extends from the lower part of the deck to the upper part of the deck through the flow velocity instrument channel; the data receiving end of the data acquisition device is connected with the signal output end of the propeller current meter and the signal output end of the camera device through a waterproof data line.
Data acquisition devices are prior art. The data acquisition device is provided with a control system which is mainly used for controlling the on-off of the sensor and controlling data transmission. The data acquisition device or the control system should be adapted to the marine working environment and have good stability, and many control systems with such functions are disclosed in "bailong" buoy mark body design and dynamics analysis "(the master academic paper of Hangzhou electronic technology university, author: Sunshen, completion date: 3 months 2014).
Preferably, a solar cell panel is fixedly connected to the upper portion of the deck, a battery pack is fixedly connected to an electric energy output end of the solar cell panel, and the battery pack supplies power to an active device on the monitoring platform.
Preferably, a protective shell is arranged on the deck, a cavity is formed inside the protective shell, and the top of the data acquisition device, the top of the battery pack and the top of the propeller current meter are all arranged inside the cavity; the solar cell panel is arranged outside the protective shell and is fixedly connected to the top surface of the protective shell.
Preferably, the shape of the float is in particular torpedo-like for use as a submersible in small waterplane catamarans.
The invention has the following beneficial effects:
1. according to the invention, the first plate and the deck enclose the relatively isolated test water channel, and the hydrological data collected in the internal flow field can be prevented from being directly influenced by the external flow field, so that the accuracy of the test data can be improved.
2. According to the invention, the installation position of the netting to be tested is designed at the inlet of the test water channel, and the technical problem that the monitoring platform is always in a flow field environment and still resonates with the wave period to influence the stability of the platform in the prior art is effectively solved through the propeller current meter and the second plate.
3. According to the invention, by designing the multiple rows of channels and simultaneously testing the netting with multiple structures, the technical problem that only one netting structure can be tested at the same time by one detection device in the prior art is solved, the testing efficiency is improved, and the operation time is reduced. Meanwhile, the flow field environment where the monitoring platform is located can be made more complex, and the resonance influence on the monitoring platform can be further reduced.
Drawings
FIG. 1 is an overall schematic view of the present invention.
Fig. 2 is a view showing the structure of the monitoring platform.
Fig. 3 is a partial schematic view at a.
Fig. 4 is a schematic view of the inside of the protective housing.
Fig. 5 is a sectional view at B-B.
Fig. 6 is a schematic view of a propeller rheometer.
Fig. 7 is a water flow pattern.
Reference numerals: 1-monitoring platform; 11-deck; 12-a first plate; 13-test water channel; 14-a float; 15-a second plate; 16-a flow meter channel; 2-propeller current meter; 21-body frame; 22-a rheometer body; 221-a paddle; 23-tail fin; 24-a stabilizing wing; 31-a netting fixing frame; 32-a camera device; 41-a data acquisition device; 42-a battery pack; 43-solar panel; 5-a protective shell; 6-netting to be tested; c-water flow direction.
Detailed Description
Example 1: as shown in fig. 1 to 7, the device for monitoring the wake environment of the aquaculture net cage comprises a monitoring platform 1. The upper part of the monitoring platform 1 is a deck 11, first plates 12 are fixedly connected below the deck 11, and the number of the first plates 12 is two and forms a test water channel 13 with the deck 11; a floating body 14 is fixedly connected below the first plate 12; the deck 11 is connected with a netting fixing frame 31, and the netting fixing frame 31 is arranged above the inlet of the test water channel 13; a propeller current meter 2 is fixedly connected in the test water channel 13; the propeller current meter 2 comprises a body frame 21, and the top of the body frame 21 is fixedly connected with the deck 11; the body frame 21 is connected with a flow meter main body 22, the flow meter main body 22 is arranged parallel to the deck 11 and is provided with a blade 221 at one side of the inlet of the test water channel, and the flow meter main body 22 is provided with a tail fin 23 at one side of the outlet of the test water channel. The bottom of the body frame 21 is fixedly connected with a stable wing plate 24, and the stable wing plate 24 is parallel to the deck 11. The deck 11 is provided with a plurality of anchor bolts, and the number of the anchor bolts is at least two; the anchor bolts are fixedly connected to two sides of the deck 11 connected with the first plate 12 and are symmetrically arranged; the anchor bolt is connected with an anchor chain, and the other end of the anchor chain is connected with an anchor.
Example 2: based on embodiment 1, in order to improve the testing efficiency and reduce the overall operation time, a second plate 15 is arranged below the deck 11, the second plate 15 is positioned between the first plates 12 and divides the testing water channel 13 into a plurality of channels, and the number of the divided channels is one more than that of the second plates 15; the upper part of the inlet of each divided channel is provided with a netting fixing frame 31, and the inner parts of the channels are provided with propeller current meters 2. The first plates 12 and the second plates 15 are arranged in parallel and are perpendicular to the deck 11, and the perpendicular distances between the adjacent first plates 12 and the adjacent second plates 15 and between the adjacent second plates 15 are consistent.
By arranging the second plates 15 between the first plates 12, the test flume 13 can be divided to form several parallel flumes. Through the design of this kind of multirow passageway, can test the netting of different structures simultaneously to promote efficiency of software testing, reduce whole activity time. In addition, an external flow field flows into different water channels through the nettings with different structures to form flow fields with different flow rates and directions, so that the flow field environment of the monitoring platform 1 is more complex, and the resonance influence on the monitoring platform can be further reduced.
Example 3: according to the second embodiment, due to the deep sea operation, the monitoring platform cannot be connected with a power supply network, so that the equipment needs to be powered by solar energy, wind energy or tidal energy. Compared with wind energy and tidal energy, the solar energy is utilized simply and the method is mature, so that the external power supply device selected by the invention is specifically the solar panel 43, and the battery pack 42 is utilized to store and release the converted electric energy. In addition, the monitoring platform 1 is further provided with a data acquisition device 41 for collecting wake environmental data and controlling data transmission.
Claims (7)
1. A device for monitoring the wake environment of a culture cage comprises a monitoring platform (1), and is characterized in that a deck (11) is arranged at the upper part of the monitoring platform (1), first plates (12) are fixedly connected below the deck (11), and the number of the first plates (12) is two and forms a test water channel (13) with the deck; a floating body (14) is fixedly connected below the first plate (12); the deck (11) is connected with a netting fixing frame (31), and the netting fixing frame (31) is arranged above an inlet of the test water channel (13); a propeller current meter (2) is fixedly connected in the test water channel (13); the propeller current meter (2) comprises a body frame (21), and the top of the body frame (21) is fixedly connected with the deck (11); the body frame (21) is connected with a current meter main body (22), the current meter main body (22) is arranged in parallel to the deck (11) and is provided with a blade (221) at one side of an inlet of the test water channel (13), and the current meter main body (22) is provided with a tail wing (23) at one side of an outlet of the test water channel (13);
the bottom of the body frame (21) is fixedly connected with a stable wing plate (24), and the stable wing plate (24) is parallel to the deck (11);
the deck (11) is provided with a plurality of anchor bolts, and the number of the anchor bolts is at least two; the anchor bolts are fixedly connected to two sides of the deck (11) connected with the first plate (12) and are symmetrically arranged; the anchor bolt is connected with an anchor chain, and the other end of the anchor chain is connected with an anchor;
a second plate (15) is arranged below the deck (11), the second plate (15) is positioned between the first plates (12) and divides the test water channel (13) into a plurality of channels, and the number of the divided channels is one more than that of the second plates (15); the upper parts of the inlets of the divided channels are provided with netting fixing frames (31), and the insides of the channels are provided with propeller current meters (2).
2. The device for monitoring the wake environment of the aquaculture net cage as claimed in claim 1, wherein a camera device (32) is fixedly connected to the netting fixing frame (31), and a lens of the camera device (32) is vertically downward; the netting fixing frame (31) is provided with more than two netting connecting positions, the netting connecting positions are all located on the same straight line, and the straight line is parallel to the deck (11), perpendicular to the first plate (12) and located on the same plane with a lens of the camera device (32).
3. The aquaculture cage wake environment monitoring device according to claim 2, characterized in that the first and second plates (12, 15) are arranged in parallel and perpendicular to the deck (11), and the perpendicular distances between adjacent first and second plates (12, 15) and between adjacent second plates (15) are the same.
4. The aquaculture cage wake flow environment monitoring device according to claim 3, wherein a data acquisition device (41) is fixedly connected above the deck (11); a current meter channel (16) is arranged on the deck (11), and the body frame component (21) extends from the lower part of the deck (11) to the upper part of the deck (11) through the current meter channel (16); and a data receiving end of the data acquisition device (41) is connected with a signal output end of the propeller current meter (2) and a signal output end of the camera device (32) through a waterproof data line.
5. The aquaculture net cage wake flow environment monitoring device according to claim 4, characterized in that a solar panel (43) is fixedly connected above the deck (11), an electric energy output end of the solar panel (43) is fixedly connected with a battery pack (42), and the battery pack (42) supplies power for active devices on the monitoring platform (1).
6. The aquaculture net cage wake flow environment monitoring device according to claim 5, characterized in that a protective shell (5) is arranged on the deck (11), a cavity is arranged inside the protective shell (5), and the top of the data acquisition device (41), the top of the battery pack (42) and the top of the propeller current meter (41) are arranged inside the cavity; the solar cell panel (43) is arranged on the outer side of the protective shell (5) and is fixedly connected to the top surface of the protective shell (5).
7. The device for monitoring the wake environment of the aquaculture net cage according to claim 6, wherein the floating body (13) is shaped like a torpedo used as a submerged body in a catamaran with a small water plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011073831.3A CN112362899B (en) | 2020-10-09 | 2020-10-09 | Breeding cage wake environment monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011073831.3A CN112362899B (en) | 2020-10-09 | 2020-10-09 | Breeding cage wake environment monitoring device |
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| CN112362899A CN112362899A (en) | 2021-02-12 |
| CN112362899B true CN112362899B (en) | 2022-06-14 |
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| CN202011073831.3A Active CN112362899B (en) | 2020-10-09 | 2020-10-09 | Breeding cage wake environment monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118091174B (en) * | 2024-04-22 | 2024-07-19 | 山东省国土测绘院 | Floating type water conservancy flow velocity measurement equipment |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734357B (en) * | 2009-12-17 | 2013-03-13 | 宇星科技发展(深圳)有限公司 | Small waterplane area catamaran type ocean monitoring buoy platform |
| CN102023130B (en) * | 2010-10-23 | 2012-06-27 | 中国船舶重工集团公司第七二五研究所 | Flow channel type marine organism adhesion testing device |
| CN102332040B (en) * | 2011-07-25 | 2013-04-17 | 大连理工大学 | Three-dimensional numerical simulation method for influence of flexible net on water flow |
| CN203117193U (en) * | 2013-01-27 | 2013-08-07 | 浙江海洋学院 | Device for monitoring breeding environment of net cage in seawater |
| CN106768841B (en) * | 2016-12-22 | 2023-06-16 | 交通运输部天津水运工程科学研究所 | Flexible netting time-space motion optical non-contact test measurement system under wave action |
| CN106985970A (en) * | 2017-04-01 | 2017-07-28 | 中国水产科学研究院南海水产研究所 | A kind of doppler velocimeter fixed mount measured for ocean flow velocity |
| NO345259B1 (en) * | 2018-06-12 | 2020-11-23 | Kahrs Hansen As | Instrumentation system for integrity monitoring of a net barrier |
| CN109169548B (en) * | 2018-08-21 | 2021-05-18 | 浙江海洋大学 | Netting of trawl net and weaving method thereof |
| CN109619008A (en) * | 2019-01-24 | 2019-04-16 | 杭州电子科技大学 | A kind of sea-cage net-piece condition real-time monitoring system and method |
| CN209560693U (en) * | 2019-01-25 | 2019-10-29 | 马立志 | Etting breakage monitoring device and monitor and alarm system |
| CN110084792B (en) * | 2019-04-19 | 2021-12-03 | 大连理工大学 | Anomaly detection method for net of marine aquaculture net cage |
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