CN112483782B - Device for observing fish behaviors in trawl net bag - Google Patents

Device for observing fish behaviors in trawl net bag Download PDF

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Publication number
CN112483782B
CN112483782B CN202011209998.8A CN202011209998A CN112483782B CN 112483782 B CN112483782 B CN 112483782B CN 202011209998 A CN202011209998 A CN 202011209998A CN 112483782 B CN112483782 B CN 112483782B
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frame
clamping block
adjusting rod
fluid
channel
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CN112483782A (en
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杨炳忠
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South China Sea Fisheries Research Institute Chinese Academy Fishery Sciences
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South China Sea Fisheries Research Institute Chinese Academy Fishery Sciences
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K73/00—Drawn nets
    • A01K73/02—Trawling nets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/16—Details concerning attachment of head-supporting legs, with or without actuation of locking members thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
    • F16M11/425—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels along guiding means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

The invention discloses a device for observing fish behaviors in trawl net sacs, which comprises: the net bag is matched and connected with the frame; a groove is formed in the outer side of the frame, a camera shooting assembly is connected in the groove in a matched mode, and the camera shooting assembly can slide along the groove; the interior of the frame is of a hollow structure, a first magnetic ball and a second magnetic ball are arranged in the frame, a water inlet is formed in one side of the frame, a swing plate is arranged on one side, close to the frame, of the water inlet, and the swing plate can control the flow direction or/and flow of water flow along the interior of the frame; the camera shooting assembly comprises a first clamping block and a second clamping block, the first clamping block and the second clamping block are both arranged in the groove in a matched mode, the first clamping block is connected with a first adjusting rod in a matched mode, the second clamping block is connected with a second adjusting rod in a matched mode, and the first adjusting rod and the free end of the second adjusting rod are connected with a probe in a matched mode; the first clamping block is matched with the first magnetic ball, and the second clamping block is matched with the second magnetic ball.

Description

Device for observing fish behaviors in trawl net bag
Technical Field
The invention relates to a fish behavior observation device, in particular to a device for observing fish behaviors in a trawl net bag.
Background
Fish ethology is a new subject for researching fish behavior rules, belongs to the category of animal ethology, has a very close relationship with fish ecology, fish psychology and fishery, various behaviors of fishes under natural conditions or experimental conditions, including individual behaviors and group behaviors, are research objects of fish ethology, the fish behaviors refer to various movements performed by fishes, are external reactions of the fishes to external environment and internal environment changes, including movements of swimming, ingestion, reproduction, respiration and the like, in addition, non-movement forms of body color change and the like during avoidance, attack and idol are also listed in the behavior category, in the process of fishing the fishes through the trawl, the fishes can also generate certain behavioral responses, such as behaviors of frightening, escaping and the like, behavior changes and behavior differences of different fishes in the trawl, and the behaviors of the fishes are collected through shooting and observing.
Traditional viewing device is mostly through setting up camera device at net bag, shoot the inside fish of net bag, camera device's setting is easy to flow state production influence in the net, make the effect of making a video recording descend, camera device fixes inside net bag in addition, can't remove, can't survey the partial region of net bag inside, some camera device is direct to visit under water in addition, be located the net bag outside, with net bag separation setting, net bag removes the in-process, camera device also need adjust, it is more troublesome to use.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a device for observing the behavior of fishes in the trawl net bag.
In order to achieve the purpose, the invention adopts the technical scheme that: an apparatus for fish behavioral observation in trawl pods, comprising: the net bag is matched and connected with the frame;
a groove is formed in the outer side of the frame, a camera shooting assembly is connected in the groove in a matched mode, and the camera shooting assembly can slide along the groove;
the frame is of a hollow structure, a first magnetic ball and a second magnetic ball are arranged in the frame, a water inlet is formed in one side of the frame, a swinging plate is arranged on one side, close to the frame, of the water inlet, and the swinging plate can control the flow direction or/and flow of water flow along the frame;
the camera shooting assembly comprises a first clamping block and a second clamping block, the first clamping block and the second clamping block are arranged in the groove in a matched mode, the first clamping block is connected with a first adjusting rod in a matched mode, the second clamping block is connected with a second adjusting rod in a matched mode, and the free ends of the first adjusting rod and the second adjusting rod are connected with a probe in a matched mode;
the first clamping block is matched with the first magnetic ball, and the second clamping block is matched with the second magnetic ball.
In a preferred embodiment of the present invention, the first fixture block and the first magnetic ball are connected in a non-contact magnetic fit manner, and the second fixture block and the second magnetic ball are connected in a non-contact magnetic fit manner.
In a preferred embodiment of the invention, the free ends of the first adjusting rod and the second adjusting rod are converged to form a converging point, and the probe is connected to the converging point.
In a preferred embodiment of the invention, a waterproof cover is arranged outside the probe.
In a preferred embodiment of the present invention, a first channel and a second channel are disposed inside the first adjustment rod, a first fluid is disposed inside the first channel, a second fluid is disposed inside the second channel, and the first fluid and the second fluid have different pressures.
In a preferred embodiment of the present invention, a third channel and a fourth channel are disposed inside the second adjustment rod, a third fluid is disposed inside the third channel, a fourth fluid is disposed inside the fourth channel, and the third fluid and the fourth fluid have different pressures.
In a preferred embodiment of the present invention, a first valve and a second valve are respectively disposed at the end of the water inlet on two sides of the swing plate, and both the first valve and the second valve can control the opening degree.
In a preferred embodiment of the present invention, the first clamping block and the second clamping block are both iron blocks, and the first clamping block and the second clamping block can slide along the groove.
In a preferred embodiment of the present invention, the frame is a ring structure, and at least one pulling rope is disposed on the frame.
In a preferred embodiment of the present invention, a light supplement lamp is disposed at one side of the probe.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) the camera is arranged outside the net bag, so that the influence of the camera on the flow state in the net is reduced; the angle of the camera is adjusted through the first adjusting rod and the second adjusting rod, so that the camera shooting effect is optimal, and the position of the probe can be adjusted and moved at any time according to the flow of water flow injected from the water inlet to the two sides of the frame.
(2) The probe is connected with the second adjusting rod through the first adjusting rod, a certain angle is formed between the first adjusting rod and the second adjusting rod, the direction and the bending angle of the probe towards the net sac are flexibly controlled by controlling the bending angles of the first adjusting rod and the second adjusting rod, wide-angle detection of the probe can be realized, and observation of fish behaviors is clear.
(3) The first magnetic ball and the second magnetic ball are controlled to move through the water flow in the frame, the first clamping block and the second clamping block in the external groove are driven to move along the groove by utilizing the magnetism principle, the probe is moved to the optimal position, the camera shooting effect is improved, and meanwhile, accurate camera shooting can be carried out on each area of the net bag.
(4) After can controlling rivers entering frame through the swing board, the rivers divide into two strands, and the strand is clockwise flow along frame inside, and the strand rivers are anticlockwise flow along frame inside, can control the pressure of two strands of rivers through adjustment swing board angle, and then the first magnetic ball of nimble control and second magnetic ball remove the position in the frame, make outside subassembly of making a video recording realize accurate removal.
Drawings
The invention is further explained below with reference to the figures and examples;
FIG. 1 is a partial perspective block diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic partial cross-sectional view of a frame of a preferred embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of the first adjusting lever according to the preferred embodiment of the present invention;
FIG. 4 is a schematic view of the internal structure of the waterproof case according to the preferred embodiment of the present invention;
in the figure: 1. hanging a ring; 2. a first clamping block; 3. a first adjusting lever; 31. a first channel, 32, a second channel, 4, a waterproof cover; 5. a second adjusting lever; 6. the second fixture block 7, the net bag 8, the groove 9, the water inlet 10, the frame 11, the first magnetic ball 12, the second magnetic ball 13, the swing plate 14, the first valve 15, the second valve 16, the light supplement lamp 17 and the probe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations. As shown in fig. 1, the present invention discloses a partial three-dimensional structure schematic diagram of an observation device;
an apparatus for fish behavioral observation in trawl pods 7, comprising: a frame 10 and a net sac 7 which is matched and connected with the frame 10;
a groove 8 is formed in the outer side of the frame 10, a camera shooting assembly is connected in the groove 8 in a matched mode, and the camera shooting assembly can slide along the groove 8;
the interior of the frame 10 is of a hollow structure, a first magnetic ball 11 and a second magnetic ball 12 are arranged in the frame 10, a water inlet 9 is arranged on one side of the frame 10, a swing plate 13 is arranged on one side, close to the frame 10, of the water inlet 9, and the swing plate 13 can control the flow direction or/and flow of water flow along the interior of the frame 10;
the camera shooting assembly comprises a first clamping block 2 and a second clamping block 6, the first clamping block 2 and the second clamping block 6 are both arranged in the groove 8 in a matched mode, the first clamping block 2 is connected with a first adjusting rod 3 in a matched mode, the second clamping block 6 is connected with a second adjusting rod 5 in a matched mode, and the free ends of the first adjusting rod 3 and the second adjusting rod 5 are connected with a probe 17 in a matched mode;
the first block 2 is matched with the first magnetic ball 11, and the second block 6 is matched with the second magnetic ball 12.
It should be noted that, the first magnetic ball 11 and the second magnetic ball 12 are controlled by controlling the flow rate of the water in the frame 10, the first fixture block 2 and the second fixture block 6 in the external groove 8 are driven to move along the groove 8 by utilizing the magnetic principle, so that the probe 17 is moved to the optimal position, the camera effect is improved, meanwhile, accurate camera shooting can be performed on each area of the net bag 7, after the water flow enters the frame 10 through the swinging plate 13, the water flow is divided into two flows, the flow flows clockwise along the inside of the frame 10, the flow counter-clockwise along the inside of the frame 10, the pressure of the two flows can be controlled by adjusting the angle of the swinging plate 13, and then the moving positions of the first magnetic ball 11 and the second magnetic ball 12 in the frame 10 are flexibly controlled, so that the external camera component can realize accurate movement.
As shown in FIG. 2, the present invention discloses a frame partial cross-sectional schematic view;
according to the embodiment of the present invention, the first fixture block 2 is connected to the first magnetic ball 11 in a non-contact magnetic force fit manner, and the second fixture block 6 is connected to the second magnetic ball 12 in a non-contact magnetic force fit manner.
According to the embodiment of the invention, the free ends of the first adjusting rod 3 and the second adjusting rod 5 are converged to form a converging point, and the probe 17 is connected at the converging point.
According to the embodiment of the invention, the waterproof cover 4 is arranged outside the probe 17.
As shown in fig. 3, the present invention discloses a schematic view of the internal structure of the first adjusting lever;
according to the embodiment of the present invention, the first adjustment lever 3 is provided with a first passage 31 and a second passage 32 therein, the first passage 31 is provided with a first fluid therein, the second passage 32 is provided with a second fluid therein, and the first fluid and the second fluid are different in pressure.
According to the embodiment of the invention, a third channel and a fourth channel are arranged in the second adjusting rod 5, a third fluid is arranged in the third channel, a fourth fluid is arranged in the fourth channel, and the pressure of the third fluid is different from that of the fourth fluid.
It should be noted that the probe 17 is connected with the second adjusting rod 5 through the first adjusting rod 3, a certain angle is formed between the first adjusting rod 3 and the second adjusting rod 5, and the direction and the bending angle of the probe 17 towards the net sac 7 are flexibly controlled by controlling the bending angles of the first adjusting rod 3 and the second adjusting rod 5, so that wide-angle detection of the probe 17 can be realized, and the observation of the behavior of the fish is clear.
According to the embodiment of the invention, the end part of the water inlet 9 positioned at two sides of the swing plate 13 is respectively provided with the first valve 14 and the second valve 15, and both the first valve 14 and the second valve 15 can control the opening degree.
According to the embodiment of the present invention, the first fixture block 2 and the second fixture block 6 are both iron blocks, and the first fixture block 2 and the second fixture block 6 can slide along the groove 8.
According to the embodiment of the present invention, the frame 10 is a ring structure, and at least one traction rope is disposed on the frame 10.
It should be noted that the end of the hauling rope is provided with a suspension loop 1, and the hauling rope can be fixed on a fishing boat through the suspension loop 1.
As shown in fig. 4, the invention discloses a schematic view of the internal structure of a waterproof cover;
according to the embodiment of the invention, a light supplement lamp 16 is arranged on one side of the probe 17.
The camera is arranged outside the net bag 7, so that the influence of the camera on the flow state in the net is reduced; the angle of the camera shooting is adjusted through the first adjusting rod 3 and the second adjusting rod 5, so that the camera shooting effect is optimal, and the position of the probe 17 can be adjusted and moved at any time according to the flow rate of water flow injected from the water inlet 9 to the two sides of the frame 10.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. An apparatus for fish behavioral observation in trawl pods, comprising: the net bag is matched and connected with the frame; it is characterized in that the preparation method is characterized in that,
a groove is formed in the outer side of the frame, a camera shooting assembly is connected in the groove in a matched mode, and the camera shooting assembly can slide along the groove;
the frame is of a hollow structure, a first magnetic ball and a second magnetic ball are arranged in the frame, a water inlet is formed in one side of the frame, a swinging plate is arranged on one side, close to the frame, of the water inlet, and the swinging plate can control the flow direction or/and flow of water flow along the frame;
the camera shooting assembly comprises a first clamping block and a second clamping block, the first clamping block and the second clamping block are arranged in the groove in a matched mode, the first clamping block is connected with a first adjusting rod in a matched mode, the second clamping block is connected with a second adjusting rod in a matched mode, and the free ends of the first adjusting rod and the second adjusting rod are connected with a probe in a matched mode;
the first clamping block is matched with the first magnetic ball, and the second clamping block is matched with the second magnetic ball.
2. An apparatus for fish behavioral observation in trawl cage according to claim 1, wherein: the first fixture block is connected with the first magnetic ball in a non-contact magnetic force matching mode, and the second fixture block is connected with the second magnetic ball in a non-contact magnetic force matching mode.
3. An apparatus for fish behavioral observation in trawl cage according to claim 1, wherein: the free ends of the first adjusting rod and the second adjusting rod are converged to form a converging point, and the probe is connected to the converging point.
4. An apparatus for fish behavioral observation in trawl cage according to claim 3, wherein: and a waterproof cover is arranged on the outer side of the probe.
5. An apparatus for fish behavioral observation in trawl cage according to claim 1, wherein: the first adjusting rod is internally provided with a first channel and a second channel, a first fluid is arranged in the first channel, a second fluid is arranged in the second channel, and the pressures of the first fluid and the second fluid are different.
6. An apparatus for fish behavioral observation in trawl sacks according to claim 1 or 5, characterized in that: a third channel and a fourth channel are arranged in the second adjusting rod, a third fluid is arranged in the third channel, a fourth fluid is arranged in the fourth channel, and the pressure of the third fluid is different from that of the fourth fluid.
7. An apparatus for fish behavioral observation in trawl cage according to claim 1, wherein: the end part of the water inlet is positioned on two sides of the swing plate and is respectively provided with a first valve and a second valve, and the opening degree of the first valve and the opening degree of the second valve can be controlled.
8. An apparatus for fish behavioral observation in trawl cage according to claim 1 wherein: the first fixture block and the second fixture block are both iron blocks, and the first fixture block and the second fixture block can slide along the groove.
9. An apparatus for fish behavioral observation in trawl cage according to claim 1 wherein: the frame is of an annular structure, and at least one traction rope is arranged on the frame.
10. An apparatus for fish behavioral observation in trawl cage according to claim 1 wherein: and a light supplement lamp is arranged on one side of the probe.
CN202011209998.8A 2020-11-03 2020-11-03 Device for observing fish behaviors in trawl net bag Active CN112483782B (en)

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CN112483782B true CN112483782B (en) 2022-06-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104094333A (en) * 2012-03-23 2014-10-08 Lg电子株式会社 Display apparatus
CN104798739A (en) * 2015-05-11 2015-07-29 宁德市富发水产有限公司 Net tool for collecting wild large yellow croaker living germplasm
CN108445153A (en) * 2018-02-27 2018-08-24 中国水产科学研究院南海水产研究所 A kind of Cod-ends of Trawl Choice tests device
CN108982542A (en) * 2018-08-17 2018-12-11 孝感荟智环保技术研发有限公司 The device detected inside pipeline is carried out by magnetic ball
CN210771080U (en) * 2019-07-31 2020-06-16 贵州华欣源科技有限公司 Intelligent monitoring device with guide rail movement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104094333A (en) * 2012-03-23 2014-10-08 Lg电子株式会社 Display apparatus
CN104798739A (en) * 2015-05-11 2015-07-29 宁德市富发水产有限公司 Net tool for collecting wild large yellow croaker living germplasm
CN108445153A (en) * 2018-02-27 2018-08-24 中国水产科学研究院南海水产研究所 A kind of Cod-ends of Trawl Choice tests device
CN108982542A (en) * 2018-08-17 2018-12-11 孝感荟智环保技术研发有限公司 The device detected inside pipeline is carried out by magnetic ball
CN210771080U (en) * 2019-07-31 2020-06-16 贵州华欣源科技有限公司 Intelligent monitoring device with guide rail movement

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