CN113645390B - River benthonic animal investigation statistical means - Google Patents
River benthonic animal investigation statistical means Download PDFInfo
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- CN113645390B CN113645390B CN202110962856.7A CN202110962856A CN113645390B CN 113645390 B CN113645390 B CN 113645390B CN 202110962856 A CN202110962856 A CN 202110962856A CN 113645390 B CN113645390 B CN 113645390B
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
- G06T7/62—Analysis of geometric attributes of area, perimeter, diameter or volume
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/51—Housings
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- 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
Abstract
The invention discloses a river benthonic animal investigation and statistics device which is characterized by comprising two horizontally arranged glass plates, wherein the two glass plates are fixed in a spacing manner in the height direction so as to form a statistics area, the statistics area is communicated with the outside in the front-back left-right direction, a sealing box is fixedly buckled on the upper surface of the upper glass plate, a downward camera and a dome lamp are further arranged at the top of the sealing box at the upper end of an inner cavity of the sealing box, and the camera is connected with the camera. The invention can realize the investigation and statistics of river benthonic animals, and has the advantages of convenient, quick and reliable statistics, ecological protection, high accuracy, high reference value and the like.
Description
Technical Field
The invention relates to the technical field of river biodiversity investigation and detection, in particular to a river benthonic animal investigation and statistics device.
Background
River benthonic animals refer to aquatic animals living at the bottom of a water body in all or most of the life history, and most of the river benthonic animals are invertebrates, such as limnodrilus, gill earthworm and the like of the phylum Onagraceae, hirudo and the like of the Hirudo class, clamworm of the Hirudo class and the like, and the like are a vast and miscellaneous living state group.
The condition of the population and the quantity of the river benthonic animals, especially small river benthonic animals, serving as a main food source of river fish can effectively reflect the health condition of a river ecological system and the quality condition of river water bodies. Therefore, the method has important significance for the research of river biodiversity, the recovery and protection of river fish resources and other fields, and the statistics of the number of river benthonic animals.
In the prior art, for shallow river or river surface biological detection statistics, after net capturing, counting statistics or camera shooting statistics is usually directly adopted on the river surface, but the bottom of the river is influenced by factors such as complex river bed environment, large river water depth and the like, and the statistics is difficult to be directly carried out by adopting a shooting mode. In the prior art, for how to count the number of river benthonic animals, the statistics is usually realized by sampling the river bottom sediment, for example, a novel benthonic animal sampler disclosed in CN201721524890.1 and a high-efficiency benthonic animal detection method disclosed in CN202011598082.6, the principle is that part of river bottom sediment is excavated, then the number of benthonic animals contained in the benthonic animal is cleaned and counted, and the ecological condition of the river benthonic animals is calculated. This approach has the following drawbacks: 1, the implementation of the mode is complex, the implementation difficulty of working statistics is high, and the resolution and statistics cannot be realized by doping a plurality of microminiature organisms and silt into a whole. 2, the method can destroy the river bed environment to a certain extent, which is unfavorable for ecological protection. 3, most of river benthonic animals are drifting benthonic animals, in large rivers such as Yangtze river, drifting of benthonic animals is a main influencing factor influencing biodiversity and species distribution, and a large part of benthonic animals are called drifting species; i.e. the life cycle is usually in a drifting state rather than being hidden in sediment. The benthonic animals with the life cycle in the internal state of the sediment for a long time are difficult to become fish foods and have no statistical significance, so the accuracy is lower and the reference value is lower by collecting the sediment for statistics.
In order to solve the above problem, the applicant considers that statistics is still performed by adopting a photographing mode, but if photographing statistics is performed by adopting a camera directly above a statistics area, the photographing range of the camera is very limited, the statistics effect is poor, and even statistical significance is difficult to generate because the sampling area is too small. However, if the camera is pulled upwards, the river between the camera and the statistical area can interfere with detection, and the interference is firstly that the transparency of the river is limited, especially the turbidity in summer is very high, the visible distance is lower than 10cm, so that the camera distance is pulled upwards, the shooting effect is rapidly reduced, and secondly, the river between the camera and the statistical area can enter the perch in the statistical process at the same time, so that the river cannot be distinguished from the statistical area, and the accurate statistics cannot be performed. These two points are also one of the reasons why the statistics of river benthonic animals by adopting a camera mode does not appear in the prior art.
Therefore, it is necessary to design a device for studying and counting benthonic animals, which can adopt the principle of shooting and counting, and can ensure enough accuracy and reliability to solve the problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: how to provide a can adopt the principle of shooting statistics of shooting to realize benthonic animal statistics, can have enough accuracy and reliable river benthonic animal investigation statistical device simultaneously, be particularly useful for large-scale deep river statistics.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a river benthonic animal investigation statistical means, includes two glass boards that the level set up, and two glass boards are fixed in the height direction interval so that form the statistics area between the two, and the statistics area all communicates with each other with the external world in the direction of controlling around, and the glass board upper surface lock of top is fixed and is provided with a seal box, and seal box top of seal box's inner chamber upper end still is provided with decurrent camera and dome lamp, and the camera links to each other with the camera.
The device is used in principle that a transparent glass plate is adopted to isolate a space-range statistics area above a river bed at the bottom of a river, the statistics area is communicated with the outside in at least one pair of directions at the front, the back, the left and the right, and then a camera is adopted to directly face the statistics area above the statistics area, the number of benthonic animals entering the statistics area in unit time is counted, and the effective benthonic animal activity number statistics in unit time in the unit volume space of a water area at the bottom of the river is obtained. Therefore, the river bed environment is not destroyed, ecological protection is facilitated, and meanwhile, sediment at the river bottom is not required to be collected, so that the detection statistics is convenient, fast and reliable. And the detection statistics is directly carried out on the water area space at the bottom of the river, so that the result is more accurate and reliable, and the biological reference significance and value are realized.
Specifically speaking, when using, the device is placed at the bottom of a river bed, a statistical area is formed on the river bed by means of two glass plates, a shooting isolation area is formed by means of the inner cavity of the sealing box, light source illumination is provided by means of the top lamp, and the shooting isolation area formed by means of the sealing box is pulled far from the camera distance, so that the number statistics of benthonic animals passing through in the internal unit time of the statistical area in a large range can be realized by the camera. Therefore, the device has the characteristics of simple structure, convenient implementation, accurate and reliable statistics and the like.
Meanwhile, in the device, a shooting isolation area is further arranged above the statistics area, transparent media are filled in the shooting isolation area, and a camera is arranged above the shooting isolation area to carry out shooting statistics. After such improvement, the camera is installed above the image capturing isolation area and the image capturing statistics is performed through the transparent medium in the image capturing isolation area. The distance between the camera and the statistical area is lengthened, so that the camera statistics of the larger statistical area can be realized, interference between the camera and the statistical area can not be generated, and the statistical accuracy and reliability are ensured. As a better alternative, the video camera is a high-speed camera.
Further, a cable is hung at the upper end of the sealing box and is connected with a cable winding control mechanism on the ship through the cable.
Thus, the device can be more conveniently retracted and extended.
Further, the middle part of the upper end of the sealing box is also upwards fixedly provided with an integrated electric control cabin, an electric control device is arranged in the integrated electric control cabin in a sealing way, the electric control device is connected with a camera, a video camera and a dome lamp and other electric components, and a cable is hung at the middle part of the upper end of the integrated electric control cabin.
In this way, control of the electrical components is facilitated.
Further, the middle part of the upper end of the sealing box is also upwards fixedly provided with a camera bin, the camera is closely installed in the camera bin, and the integrated electronic control bin is installed at the upper end of the camera bin.
Thus, the camera is convenient to install, fix and seal.
Further, the upper end of the integrated electric control cabin is also provided with a cable connector, a cable is hermetically sealed at the cable connector, the outer end of the cable is connected with the cable and extends upwards, and the inner end of the cable is connected with the electric control device.
This facilitates communication to the vessel and provides power to the device.
Further, the sealing box is also provided with a water injection port joint and an exhaust valve joint which are respectively communicated with the shooting isolation area in the sealing box.
When the device is used, water is injected into the sealing box through the water injection port joint, so that the water is used as a transparent medium to fill the space of the whole shooting isolation area. The types of perspective media on the imaging light transmission path from the benthonic animal of the shot object to the camera are reduced, and three media of water, glass and air are reduced to two media of water and glass, so that the loss condition of light passing through interface layers of different media is greatly reduced; the image acquisition effect is improved. Meanwhile, the injected water can also improve the overall weight of the device, offset buoyancy, be favorable for the device to be quickly lowered to the river bed water bottom, and the exhaust valve joint is convenient and smooth to inject and drain.
Further, the water injection port joint and the exhaust valve joint are externally connected with sealing covers in a rotating way. And the sealing is convenient.
Further, the outer surface of the sealing box is also provided with a lifting ring for the weight.
Thus, the counterweight is convenient to hang, and the device can be conveniently and rapidly lowered to the water bottom.
Further, the outer surface of the sealing box is also provided with convex reinforcing ribs. The strength of the device is conveniently improved.
Further, the two glass plates are rectangular glass plates, and the sealing box is in a trapezoid shape.
Thus, the size of the statistical area range of the camera which can be used for shooting and detecting is more convenient to improve.
Further, the upper end of the inner cavity of the sealing box is also horizontally provided with a light-scattering plate, a camera mounting hole is formed in the middle of the light-scattering plate, the camera is exposed downwards from the camera mounting hole, and the dome lamps are multiple and are uniformly arranged above the light-scattering plate on the periphery of the camera along the ring shape.
Therefore, the light of the dome lamp irradiates the statistical area downwards through the light scattering plate, and the influence of shadow generated by direct irradiation on detection can be better avoided.
Further, at least one layer of light scattering material is arranged on the lower glass plate, and an upward bottom lamp is arranged below the lower glass plate.
Therefore, the light emitted by the bottom lamp is scattered upwards through the glass plate below and irradiates the statistical area, so that the image pickup detection statistics of benthonic animals in the bottom lamp are more convenient; meanwhile, the light scattering material on the lower glass plate shields interference of objects below the lower glass plate on shooting statistics, and the shooting detection statistics effect is ensured to be reliable.
Further, scale mark grids are arranged on the two glass plates.
When the image pick-up detection statistics is convenient, the size of the river benthonic animal is judged through the comparison of the scale line grids, and the identification and the grading statistics of the size class of the river benthonic animal are completed in an auxiliary mode.
Further, a downward auxiliary lamp for detection is arranged on the lower surface of the upper glass plate.
Like this, detect auxiliary lamp can make the benthonic animal that passes through the statistics area shine the projection on the glass of below, like this, according to the scale size that benthonic animal falls into scope on upper and lower two glass and the scale size that the projection falls into on glass below, can calculate the accurate size value that obtains benthonic animal accurately. Therefore, accurate classification and grading statistics of the size category of the benthonic animals can be assisted. The accuracy of the grading statistics is greatly improved. Further, the detection auxiliary lamp is located at the edge position of the glass plate. Reducing the influence of the existence of the self-body on detection.
Further, screws which are vertically and slidably penetrated are further arranged at the corners of the periphery between the two glass plates, and the screws, the upper glass plate and the lower glass plate are respectively fixed through a pair of nuts.
Therefore, the distance between the two glass plates on the screw can be conveniently and rapidly adjusted, so that the height of the statistical area is reasonably adjusted according to the clarity of river water at the bottom of the river bed, and the detection effect is ensured to meet the requirement of shooting definition.
Further, the screw rod below still is provided with implantation mechanism, implantation mechanism includes the insert rod that a decurrent set up, and insert rod lower extreme is the thin end, the screw rod is cavity screw rod and hole are provided with the internal thread, insert rod upper end has the external screw thread and connects the cooperation soon in the screw rod, and it has still to connect a lock nut soon to lie in screw rod lower extreme position on the insert rod, has still cup jointed a coil spring on the insert rod of lock nut below, and the coil spring below is provided with a circular shape and deposits the bed dish, and it has the hole that can freely slide from top to bottom on the insert rod to deposit bed dish level setting and middle part, coil spring fixed connection is between lock nut and the bed dish.
When the device is used for being placed at the bottom of a river bed to be planted, the lower end of the inserting rod is firstly inserted into the river bed silt until the planting plate and the silt are contacted against the silt and clamped above the silt, the lower end of the device can be inserted into the silt deeply by means of the structures of the planting plate and the inserting rod, the contact area with the upper surface of the silt can be increased, the stability of the device is greatly improved, dumping is avoided, and the planting plate can be respectively suitable for different silt depths of different positions by means of elastic connection of springs; meanwhile, the height of the insertion rod can be flexibly adjusted according to the requirement. Therefore, the implantation mechanism greatly improves the stability of the device for implantation and avoids easy capsizing caused by the influence of fish activity in the using process of the device.
In conclusion, the invention can realize the investigation and statistics of river benthonic animals, and has the advantages of convenient, quick and reliable statistics, ecological protection, high accuracy, high reference value and the like.
Drawings
Fig. 1 is a schematic structural diagram of a river benthonic animal investigation and statistics device adopted.
Fig. 2 is a bottom view of the individual seal cartridge of fig. 1.
Fig. 3 is a schematic diagram of the apparatus of fig. 1 for achieving accurate scale detection of benthonic animals.
Detailed Description
The invention is described in further detail below in connection with a method for the investigation and statistics of river benthonic animals, which is carried out by means of the device according to the invention.
The specific embodiment is as follows: a method for investigation and statistics of benthonic animals in a river is characterized in that a transparent material is adopted to isolate a statistical area with a space range above a river bed at the bottom of the river, the statistical area is communicated with the outside in at least one pair of directions at the front, back, left and right, and then a camera is adopted to directly face the statistical area above the statistical area to shoot, the number of benthonic animals entering the statistical area in unit time is counted, and the effective benthonic animal activity number statistics in unit time in unit volume space at the bottom of the river is obtained.
Therefore, the method does not destroy the river bed environment, is beneficial to ecological protection, does not need to collect river bottom sediment, and is convenient, quick and reliable in detection statistics. And the detection statistics is directly carried out on the water area space at the bottom of the river, so that the result is more accurate and reliable, and the biological reference significance and value are realized.
Wherein the transparent material is usually obtained by using two glass sheets horizontally spaced apart in the height direction. Has the characteristics of simple implementation and convenient realization.
Wherein, the statistical area is communicated with the outside in the front-back and left-right directions.
Thus, the reliability and the reference value of the detection statistical result are better improved.
Wherein, set up a shooting isolation region again above the statistics region, make a video recording isolation region intussuseption and pack transparent medium, install the camera and make a video recording the statistics above making a video recording isolation region.
Therefore, if the camera is directly adopted to carry out shooting statistics on the adjacent position above the statistical area, the shooting range of the camera is very limited, the statistical effect is poor, even statistical significance is difficult to generate because of too small sampling area, if the camera is pulled up, the river between the camera and the statistical area can interfere detection, the first interference is that the transparency of the river is limited, the shooting effect is rapidly reduced after the distance is pulled up, and the second interference is that the river between the camera and the statistical area can enter the dwelling animal simultaneously in the statistical process, so that the camera cannot be distinguished from the statistical area, and the accurate statistics cannot be carried out. These two points are also one of the reasons why the statistics of river benthonic animals by adopting a camera mode does not appear in the prior art. Therefore, after the improvement, the camera is arranged above the shooting isolation area and shooting statistics is carried out through the transparent medium in the shooting isolation area. The distance between the camera and the statistical area is lengthened, so that the camera statistics of the larger statistical area can be realized, interference between the camera and the statistical area can not be generated, and the statistical accuracy and reliability are ensured.
The method is realized by adopting a river benthonic animal investigation and statistics device shown in the figures 1-3, the river benthonic animal investigation and statistics device comprises two glass plates 1 which are horizontally arranged, the two glass plates 1 are fixed at intervals in the height direction so as to form a statistics area 2, the statistics area 2 is communicated with the outside in the front-back, left-right directions, the upper surface of the upper glass plate is buckled and fixedly provided with a sealing box 3, the top of the sealing box at the upper end of the inner cavity of the sealing box 3 is also provided with a downward camera 4 and a dome lamp 5, and the camera 4 is connected with the camera.
Like this, when using, with above-mentioned device transfer to the riverbed bottom, rely on two glass plates to form the statistics area on the riverbed, rely on the inner chamber of sealed box to form and make a video recording the isolation area, rely on the dome lamp to provide the light source illumination, rely on the isolation area that makes a video recording of sealed box formation to zoom out the camera distance for the camera can realize the statistics of the quantity of the benthonic animal that passes through in the inside unit time of statistics area in a relatively large scale. Has the characteristics of simple structure, convenient implementation, accurate and reliable statistics, etc. Wherein the video camera is a high speed camera.
Wherein, the upper end of the sealing box 3 is hung with a cable 6 and is connected with a cable winding control mechanism on the ship through the cable 6.
Thus, the device can be more conveniently retracted and extended.
Wherein, seal box 3 upper end middle part still upwards is fixed and is provided with an integrated automatically controlled storehouse 7, and integrated automatically controlled storehouse 7 internal seal installs electric control device, and electric control device links to each other with camera, camera and dome lamp, and the hawser hangs establishes in integrated automatically controlled storehouse upper end middle part position.
In this way, control of the electrical components is facilitated.
Wherein, still upwards fixed being provided with a camera storehouse 8 in the middle part of seal box 3 upper end, camera seal installs in camera storehouse 8, and integrated automatically controlled storehouse 7 is installed in camera storehouse 8 upper end.
Thus, the camera is convenient to install, fix and seal.
The upper end of the integrated electric control cabin is also provided with a cable connector 9, a cable is hermetically sealed at the cable connector, the outer end of the cable is connected with the cable 6 and extends upwards, and the inner end of the cable is connected with the electric control device.
This facilitates communication to the vessel and provides power to the device.
The sealing box 3 is further provided with a water injection port connector 10 and an exhaust valve connector 11, and the water injection port connector 10 and the exhaust valve connector 11 are respectively communicated with a shooting isolation area in the sealing box 3.
When the device is used, water is injected into the sealing box through the water injection port joint, so that the water is used as a transparent medium to fill the space of the whole shooting isolation area. The types of perspective media on the imaging light transmission path from the benthonic animal of the shot object to the camera are reduced, and three media of water, glass and air are reduced to two media of water and glass, so that the loss condition of light passing through interface layers of different media is greatly reduced; the image acquisition effect is improved. Meanwhile, the injected water can also improve the overall weight of the device, offset buoyancy, be favorable for the device to be quickly lowered to the river bed water bottom, and the exhaust valve joint is convenient and smooth to inject and drain.
Wherein, the water injection port joint 10 and the exhaust valve joint 11 are externally connected with sealing covers in a rotating way. And the sealing is convenient.
Wherein, the outer surface of the sealing box 3 is also provided with a lifting ring 12 for the weight.
Thus, the counterweight is convenient to hang, and the device can be conveniently and rapidly lowered to the water bottom.
Wherein, sealing box 3 surface still is provided with evagination strengthening rib 13. The strength of the device is conveniently improved.
Wherein, two glass plates 1 are rectangular glass plates, and the sealing box 3 is in a trapezoid shape.
Thus, the size of the statistical area range of the camera which can be used for shooting and detecting is more convenient to improve.
Wherein, seal box inner chamber upper end still horizontally is provided with a light scattering plate 14, opens in the middle of the light scattering plate has the camera mounting hole, and camera 4 exposes downwards from the camera mounting hole, and dome lamp 5 is a plurality of and evenly installs in the peripheral light scattering plate 14 top of camera along the annular.
Therefore, the light of the dome lamp irradiates the statistical area downwards through the light scattering plate, and the influence of shadow generated by direct irradiation on detection can be better avoided.
Wherein, at least one layer of light diffusing material is arranged on the lower glass plate, and an upward bottom lamp 15 is arranged below the lower glass plate.
Therefore, the light emitted by the bottom lamp is scattered upwards through the glass plate below and irradiates the statistical area, so that the image pickup detection statistics of benthonic animals in the bottom lamp are more convenient; meanwhile, the light scattering material on the lower glass plate shields interference of objects below the lower glass plate on shooting statistics, and the shooting detection statistics effect is ensured to be reliable.
Wherein, the two glass plates 1 are provided with scale mark grids.
When the image pick-up detection statistics is convenient, the size of the river benthonic animal is judged through the comparison of the scale line grids, and the identification and the grading statistics of the size class of the river benthonic animal are completed in an auxiliary mode.
Wherein, the lower surface of the upper glass plate is also provided with a downward auxiliary lamp 16 for detection.
Thus, referring to fig. 3, the detection assisting lamp can make the benthonic animal passing through the statistical region shoot out the projection on the glass below, and according to the scale size (section a and section b in fig. 3) of the benthonic animal falling into the range on the upper glass and the lower glass and the scale size (section c in fig. 3) of the benthonic animal falling into the projection on the glass below, the accurate size value of the benthonic animal can be accurately calculated. Therefore, accurate classification and grading statistics of the size category of the benthonic animals can be assisted. The accuracy of the grading statistics is greatly improved. Wherein the detection auxiliary lamp is positioned at the edge position of the glass plate. Reducing the influence of the existence of the self-body on detection.
Screw rods 17 which vertically penetrate through and are arranged in a sliding mode are further arranged at the peripheral corner positions between the two glass plates 1, and the screw rods 17, the upper glass plate and the lower glass plate are fixed through a pair of nuts 18.
Therefore, the distance between the two glass plates on the screw can be conveniently and rapidly adjusted, so that the height of the statistical area is reasonably adjusted according to the clarity of river water at the bottom of the river bed, and the detection effect is ensured to meet the requirement of shooting definition.
The implantation mechanism comprises an insertion rod 19 which is downwards arranged, the lower end of the insertion rod 19 is a thin end, the screw rod 17 is a hollow screw rod, an inner hole is provided with an inner thread, the upper end of the insertion rod 19 is provided with an outer thread and is screwed into the screw rod, a locking nut 20 is screwed into the position of the lower end of the screw rod on the insertion rod, a spiral spring 21 is sleeved on the insertion rod below the locking nut 20, a circular implantation disc 22 is arranged below the spiral spring 21, the implantation disc 22 is horizontally arranged, a hole which can freely slide up and down on the insertion rod is formed in the middle of the implantation disc, and the spiral spring is fixedly connected between the locking nut and the implantation disc.
When the device is used for being placed at the bottom of a river bed to be planted, the lower end of the inserting rod is firstly inserted into the river bed silt until the planting plate and the silt are contacted against the silt and clamped above the silt, the lower end of the device can be inserted into the silt deeply by means of the structures of the planting plate and the inserting rod, the contact area with the upper surface of the silt can be increased, the stability of the device is greatly improved, dumping is avoided, and the planting plate can be respectively suitable for different silt depths of different positions by means of elastic connection of springs; meanwhile, the height of the insertion rod can be flexibly adjusted according to the requirement. Therefore, the implantation mechanism greatly improves the stability of the device for implantation and avoids easy capsizing caused by the influence of fish activity in the using process of the device.
Claims (8)
1. The river benthonic animal investigation and statistics device is characterized by comprising two horizontally arranged glass plates, wherein the two glass plates are fixed in a spacing manner in the height direction so as to form a statistics area, the statistics area is communicated with the outside in the front-back, left-right directions, a sealing box is buckled and fixed on the upper surface of the upper glass plate, a downward camera and a dome lamp are further arranged at the top of the sealing box at the upper end of an inner cavity of the sealing box, and the camera is connected with the camera;
scale mark grids are arranged on the two glass plates;
the lower surface of the upper glass plate is also provided with a downward auxiliary lamp for detection, the auxiliary lamp for detection can enable benthonic animals passing through a statistical area to shoot out projection on the lower glass, and then the accurate size value of benthonic animals is accurately calculated and obtained according to the size of scale falling into a range on the upper glass and the lower glass and the size of scale falling into the lower glass by projection.
2. The apparatus of claim 1, wherein the upper end of the sealed box is suspended with a cable and connected to a cable line control mechanism on the vessel.
3. The device for studying and counting river benthonic animals according to claim 2, wherein the middle part of the upper end of the sealing box is further provided with an integrated electric control cabin upwards, the integrated electric control cabin is internally provided with an electric control device in a sealing way, the electric control device is connected with the camera, the video camera and the dome lamp, and the cable is hung at the middle part of the upper end of the integrated electric control cabin.
4. The device for studying and counting river benthonic animals according to claim 3, wherein a camera bin is further fixedly arranged upwards in the middle of the upper end of the sealing box, the camera is hermetically installed in the camera bin, and the integrated electronic control bin is installed at the upper end of the camera bin.
5. The device for studying and counting river benthonic animals according to claim 4, wherein the upper end of the integrated electric control cabin is further provided with a cable connector, a cable is sealed at the cable connector, the outer end of the cable is connected with the cable and extends upwards, and the inner end of the cable is connected with the electric control device.
6. The river benthonic animal investigation and statistics device according to claim 1, wherein the sealing box is also provided with a water injection port joint and an exhaust valve joint which are respectively communicated with a shooting isolation area in the sealing box;
the water injection port joint and the exhaust valve joint are both externally connected with sealing covers in a screwed way.
7. The river benthonic animal investigation and statistics device according to claim 1, wherein the outer surface of the sealing box is also provided with a lifting ring for weight distribution;
the outer surface of the sealing box is also provided with a convex reinforcing rib;
the two glass plates are rectangular glass plates, and the sealing box is in a trapezoid shape;
the two glass plates are rectangular glass plates, and the sealing box is in a trapezoid shape;
the upper end of the inner cavity of the sealing box is also horizontally provided with a light-scattering plate, a camera mounting hole is formed in the middle of the light-scattering plate, the cameras are exposed downwards from the camera mounting hole, and a plurality of dome lamps are uniformly arranged above the light-scattering plate on the periphery of the cameras along the ring shape;
at least one layer of light scattering material is arranged on the lower glass plate, and an upward bottom lamp is arranged below the lower glass plate.
8. The river benthonic animal research statistic apparatus of claim 1, wherein: screw rods which are vertically and slidably penetrated are further arranged at the corners of the periphery between the two glass plates, and the screw rods are fixed with the upper glass plate and the lower glass plate through a pair of nuts respectively;
the screw rod below still is provided with implantation mechanism, implantation mechanism includes the insert rod that a decurrent set up, and insert rod lower extreme is the thin end, the screw rod is cavity screw rod and hole are provided with the internal thread, insert rod upper end has the external screw thread and connects the cooperation soon in the screw rod, still connects soon to have a lock nut in the screw rod lower extreme position on the insert rod, has still cup jointed a coil spring on the insert rod of lock nut below, and the coil spring below is provided with a circular shape implantation dish, and implantation dish level sets up and the middle part is opened has the hole that can freely slide from top to bottom on the insert rod, and coil spring fixed connection is between lock nut and implantation dish.
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