66 results about "Dorsal fin" patented technology

The invention discloses an oil-water emulsification turbulent flow mixer structure which comprises an oil-water mixing pipe and a spiral strip, the spiral strip is fixedly arranged in the oil-water mixing pipe, a dorsal fin spiral rib is fixedly arranged on one side of the spiral strip in a surrounding mode, the dorsal fin spiral rib is provided with three parting spirals, and the inner side of the spiral strip is connected with a first rib edge; the outer side of the spiral strip is connected with a second rib edge, the first rib edge and the second rib edge are triangular, an arc-shaped turbulent flow protrusion is fixedly arranged between the spiral strip and the dorsal fin spiral rib in a matched mode, and a honeycomb grid is fixedly arranged between the first rib edge and the second rib edge and the spiral strip; through the parting spiral structure of the dorsal fin spiral ribs and the step-by-step decreasing design of the spiral curvature, a multi-stage vortex excitation area is formed, superposition of vortexes of different scales is induced, the oil-water mixing process is accelerated, through the synergistic effect of the hexagonal periodic topological units of the honeycomb grids and the surface micron-sized groove arrays, a flow field is segmented, boundary layer flowing is regulated and controlled, and the oil-water mixing effect is improved. The microscopic shear effect is enhanced, and the liquid drop crushing efficiency and the mixing uniformity are improved.

The invention belongs to the technical field of cosmetic efficacy evaluation, and discloses a sunscreen efficacy evaluation method and application thereof, and the method comprises the following steps: building a blank group; establishing a model group; establishing a sample group; performing constant-temperature incubation on the blank group, the model group and the sample group for a first period of time, recording a swimming track, and calculating swimming distance increment and after-sun burning pain relieving efficiency of each group of zebrafish; performing constant-temperature incubation on the blank group, the model group and the sample group for a second duration, recording the tail fin and dorsal fin area of the zebra fish, and calculating the sunburn prevention efficiency; performing constant-temperature incubation on the blank group, the model group and the sample group for a third period of time, recording the head melanin area of the zebra fish, and calculating the anti-sunburn efficiency; and grading the sunscreen effect of the sample. The method disclosed by the invention has the advantages of low cost, short test period, high reproducibility, high visualization degree, intuitive and understandable test result and the like, and can be used for accurately grading the sunscreen effects of chemical sunscreen agents, water-soluble sunscreen cosmetics and raw materials thereof from the whole animal level.

The invention discloses a grass carp marker release effect evaluation method, which specifically comprises the following steps: dividing released grass carps into large grass carps and small grass carps, implanting microsatellite markers into abdominal cavities of the large grass carps, and fixing external markers on dorsal fins of the small grass carps; the released grass carp is subjected to fin ray cutting sampling, and the age, the weight and the shape of the grass carp are recorded; constructing a sample genetic archive; recapturing the released groups; and identifying the recaptured individuals, and counting released individuals in the recaptured grass carp. The larger the recapture rate is, the better the enhancement and release effect is, so that the contribution of the enhancement and release of the grass carps to the ecological quantity of all the grass carps in the river is estimated, and the enhancement and release effect of the grass carps is determined. The method is beneficial to recovery of the number of the grass carps in the river, the releasing effect of the grass carps can be known, the releasing method is improved in time, and the method has great popularization value.

The invention provides a bionic robotic fish driven by a spherical parallel mechanism. The bionic robotic fish comprises a bionic fish head; the pectoral fins are symmetrically arranged on the two sides of the bionic fish head; the bionic fish body is connected with the bionic fish head, a dorsal fin is arranged on the bionic fish body, the bionic fish body comprises a driving cabin section and a transmission cabin section, and a first supporting frame is arranged on the rear end face, away from the bionic fish head, of the driving cabin section; the driving mechanism is mounted on the first supporting frame; the bionic tail fin is movably connected with the bionic fish body, and the bionic tail fin is configured to oscillate and swing on two planes which are perpendicular to each other under the driving of the driving mechanism so as to push the bionic robotic fish to advance in water.

The water-air cross-medium unmanned platform multi-mode structure based on the bionic design specifically comprises an aircraft main body bionic model designed based on the sperm whale swimming principle, and a pair of bow bionic front fins are arranged on the left side and the right side of the front end of the aircraft main body bionic model; a bionic dorsal fin is arranged on the upper portion of the separable shell, a plurality of rotor mechanisms are arranged in the separable shell, when the separable shell is opened, the rotor mechanisms are unfolded to work, a bionic tail fin and a double-shaft steering engine are arranged at the tail of the aircraft body bionic model, a seven-blade propeller is sleeved with a propeller guide pipe, and the propeller guide pipe is connected with the separable shell. When the aircraft main body bionic model sails underwater, the separable shell and the aircraft main body bionic model are attached to each other, so that the streamline of the aircraft main body is ensured; when the aircraft main body bionic model is in an air flight mode, the separable shell is lifted to provide space for unfolding of the multiple rotor wing structures below the separable shell.

The invention belongs to the technical field of robots, and relates to a bionic robotic fish coupled with fish luring factors, which is characterized in that a fish head, a fish body, a tail fin and a dorsal fin form a robotic fish shell; the robot further comprises two discharge electrodes, a communication module, two obstacle avoidance sensors, a water pump, two RGB lamps, three joint steering engines, a propeller thruster, two loudspeakers, a balance weight adjusting bin, a control circuit board, a battery, a water bin and a high-pressure air bin. Three fish luring factors including sound, light and electricity are coupled to the robotic fish, the combination mode of the factors is reasonably regulated, controlled and optimized, the fishes are guided to gather, the fishway entrance is found, the recognition ability of the fishes to fish passing facilities is enhanced, and the use efficiency of the fishway is improved. The method helps the migration of the rare fish fingerlings, protects the reproduction of the rare fishes, maintains the stability of fish populations, is beneficial to the protection and restoration of the ecological environment of the fishes, and walks the way of ecological priority and green development on the basis of the development of water conservancy projects.

The invention discloses a prizing-imitating micro-plastic collecting robot and a multi-mode switching control method thereof, and relates to the technical field of underwater robotics.The prizing-imitating micro-plastic collecting robot comprises a fish head, a mouth opening and closing device, pectoral fins, a trunk, a filtering assembly, dorsal fins, a fish tail, tail fins, a fish tail driving assembly, a power source and a controller, and the fish head, the trunk and the fish tail are linearly and sequentially arranged from front to back; the mouth opening and closing device is arranged at the front end of the fish head. The two pectoral fins are symmetrically arranged on the left side and the right side of the fish head. Two water filtering mechanisms are symmetrically arranged on the left side and the right side of the fish head, a collecting bin and an equipment bin are sequentially arranged in the trunk from front to back, a rotary valve assembly is arranged on the front side of the collecting bin, a filtering assembly is located on the rear portion of the collecting bin, and the fish tail is of a three-section structure. The prizing-imitating micro-plastic collecting robot continuously collects micro-plastic in water through a set route, time and labor are saved, the robot can work in a deep water area, the collecting efficiency is high, the use cost is low, the robot is not affected by the environment and weather, safety is high, and the micro-plastic in the water area is comprehensively collected.

The invention discloses a robotic fish school system for underwater autonomous obstacle avoidance and path planning, and relates to the technical field of robotic fish schools. The robot fish comprises a plurality of robot fish single bodies, and each robot fish single body comprises a head detection system, a control system, a middle power and steering engine bionic movement system and a tail balance system; the head detection system comprises a front sonar, a bottom sonar, two-side sonars and a binocular camera; the control system comprises a motion control module, and a data acquisition module, an image analysis module, a motor and a double-steering-engine motion module are electrically connected with the control device; the back of the robotic fish is provided with a dorsal fin and a wireless communication module. The environment is monitored through the sonar and the binocular camera, obstacles in the environment are recognized through the control system, a path is planned, and the motor and the double steering engines are driven to conduct obstacle avoidance operation. Compared with a traditional obstacle avoidance mode, the effective obstacle avoidance range is wider, modular design is adopted, and disassembly and later maintenance are easy.

The application discloses a kind of quantitative evaluation methods of fish bubble disease degree under TDG supersaturation stress, first place fish under supersaturation stress under microscope respectively observe the amount of attached bubble of tail fin, anal fin, ventral fin, pectoral fin and dorsal fin and bleeding symptom, and take the photo of each fin;According to the total area S of photo measurement each fin, bubble coverage area S1, bleeding area S2;Calculate the bubble amount severity of each fin α1 and bleeding symptom severity α2;According to the size of α1 and α2, scoring is carried out, and the score t of each fin is calculated;According to the score of each fin, the comprehensive score T of fish is calculated;Determine the degree of fish bubble disease under TDG supersaturation stress.The application fills the vacancy of technical system of quantitative evaluation of fish bubble disease severity, and enriches the theoretical basis of water conservancy total dissolved gas supersaturation on fish impact evaluation.

The utility model provides an underwater unmanned underwater vehicle, which relates to the field of underwater vehicles and comprises a vehicle body, a dorsal fin is fixedly connected to the top of the vehicle body, side fins are arranged on two sides of the vehicle body, and a mounting component for mounting the side fins is arranged on the vehicle body. The mounting assembly comprises a first mounting ring, a second mounting ring, a first mounting plate, a second mounting plate and fixing bolts, and the first mounting plate and the second mounting plate are fixedly connected to the front end and the rear end of the side fin respectively. According to the underwater unmanned underwater vehicle, through the arrangement of the mounting assembly, when the position of the side fin needs to be adjusted, only fixing bolts on a first mounting plate and a second mounting plate need to be screwed off, the side fin can be quickly disassembled, then the side fin is rotated along a first mounting ring and a second mounting ring until the side fin reaches a proper position, and then the side fin can be quickly disassembled. The side fins can be conveniently and rapidly replaced or adjusted according to test requirements, and the side fins can be conveniently and rapidly replaced or adjusted according to test requirements, so that the side fins are convenient to use.

The flow channel structure comprises a pole plate main body, the pole plate main body is provided with a liquid inlet and a liquid outlet, and a flow cavity is formed in the pole plate main body; the polar plate main body is also provided with a plurality of bionic shark dorsal fin flow guide units, and the bionic shark dorsal fin flow guide units and the flow cavity form a plurality of flow channels; the bionic shark dorsal fin diversion unit comprises a ridge, a tail surface and a side surface, and is divided into a front end and a rear end. The side faces are streamlined from the front end to the rear end and are in gradient distribution from the upper portion to the lower portion, the acute angles of the front ends of the side faces are pointed, the width of the rear end is gradually increased, the middle is a concave curved surface for diversion, and the upper portion and the lower portion are convex curved surfaces for adsorption and diversion, so that backflow is effectively avoided; the tail part is a convex curved surface and is in arc-shaped transition with the side surface, so that the separation point of the boundary layer moves backwards, and backflow is further avoided; the bionic shark dorsal fin diversion units in the diversion group are designed to be distributed in a non-equidistant manner, and the dense diversion units in the main flow direction guide the electrolyte to two sides, so that the flow uniformity is effectively improved.

A T-shaped marking device is used for marking by penetrating the dorsal fin of a fish, comprising a glue needle body, a transverse glue needle head connected with one end of the glue needle body, a digital coding part connected with the other end of the glue needle body, and a anti-extraction part sleeved on the glue needle body, the anti-extraction part comprises a front anti-extraction partition and a rear anti-extraction partition, the front anti-extraction partition is close to the transverse glue needle head, and the rear anti-extraction partition is close to the digital coding part, the glue needle body is used for penetrating the dorsal fin and making the transverse glue needle head located on one side of the dorsal fin, and the front anti-extraction partition and the digital coding part are located on the other side of the dorsal fin, and the T-shaped marking device has the characteristics of small damage to the fish body, long-term retention without easy label removal and low cost.

The application discloses a bionic fish structure with foldable and variable rigidity adjustment functions, and belongs to the technical field of bionic fish structures. In order to solve the problems of high energy loss rate, slow swimming speed, poor stability at high speed, and the fact that a large amount of space cannot be left in the fish head for bearing, the application comprises a fish head unit, a fish body unit and a foldable tail fin, the fish head unit and the foldable tail fin are arranged at two ends of the fish body unit respectively, the fish body unit comprises an outer skeleton, a foldable dorsal fin unit, a fish body swing unit and a fish tail variable rigidity adjustment assembly, the foldable dorsal fin unit, the fish body swing unit and the fish tail variable rigidity adjustment assembly are arranged in the outer skeleton, one end of the fish body swing unit is detachably connected with the fish head unit, the other end of the fish body swing unit extends out of the tail end of the outer skeleton and is detachably connected with the foldable tail fin, the foldable dorsal fin unit is located above the fish body swing unit, the top of the foldable dorsal fin unit penetrates through the outer skeleton and extends above the outer skeleton, and the fish tail variable rigidity adjustment assembly is located above the fish body swing unit and in the inner part of the outer skeleton. The application is used as a bionic fish structure for underwater detection.

The invention provides a bionic propeller based on a dolphin dorsal fin shape blade section and a paddle, the blade section of the paddle comprises a blade back and a blade surface, the blade back comprises two body parts and a dorsal fin part located between the two body parts, one ends of the two body parts are connected to the two opposite ends of the blade surface respectively, and the other ends of the two body parts are connected to the dorsal fin part. The dorsal fin part comprises an ascending section and a downward bent section which are sequentially connected in the blade width direction of the paddle, and the end, away from the downward bent section, of the ascending section and the end, away from the ascending section, of the downward bent section are connected with the other ends of the two body parts correspondingly, so that a wing-shaped structure in the shape of a dolphin is formed. The problems of insufficient performance and cavitation effect of a traditional propeller can be solved, so that the propelling efficiency of the propeller is improved.

The utility model discloses an accurate breeding marking device for wild protection fish, which comprises a marking body, the marking body comprises two marking sheets and a connecting sheet, and the two marking sheets are connected through the connecting sheet; biocompatible silica gel suckers are arranged on the opposite surfaces of the two marking sheets, and a plurality of line holes are uniformly formed in the edges of the marking sheets and used for being matched with degradable suture lines to sew the two marking sheets on fish dorsal fins; a fluorescent coding layer is arranged on the side, facing the outer side, of the marking piece, a microprocessor is integrated in the marking piece, and the microprocessor is connected with a miniature RFID chip. According to the utility model, a dual fixing structure combining the biocompatibility silica gel sucker and the degradable suture line is adopted, and the silica gel sucker realizes noninvasive preliminary fixation through negative pressure adsorption, so that mechanical damage caused by traditional physical marking is avoided; the degradable suture line is made of environment-friendly materials such as polylactic acid, and the degradation period of the suture line is synchronous with the healing of the fish epidermis.

The present invention discloses a bionic conger eel for marine ranch environmental monitoring, including a bionic conger eel body, the bionic conger eel body including a head, a trunk, a dorsal fin, an anal fin, and a caudal fin connected in sequence, the head being a three-dimensional hollow shell, with a power supply, a micro storage, an image processing microcomputer, a control module, and a plurality of collectors placed inside, the trunk including an alternately connected rotating part and a bionic flexible underactuated tail, and the end of the head close to the trunk is connected to the end of the bionic flexible underactuated tail close to the head through the alternately connected rotating part. The present invention has the advantages of low energy consumption, high bionics, and flexible swimming, maintains high mobility and stability, and has good environmental integration, utilizes the good fluid shape of the bionic conger eel, can flexibly cross the seabed slit area and mobile monitor the water quality indicators of the marine ranch, and can be applied to the marine ranch complex environment fish resource assessment, water quality monitoring, aquarium viewing, and other fields.

The invention provides a positioning array and underwater equipment, and relates to the field of underwater equipment. The positioning array comprises a flange, a shell and an electronic assembly, the shell is arranged on one side of the flange, and the shell is in sealing fit with the flange; the section made in the advancing direction of the positioning array is a longitudinal section, and the section made in the direction perpendicular to the advancing direction of the positioning array is a transverse section. The heights of a plurality of transverse sections of the shell are gradually reduced in the advancing direction of the positioning array, and the width of each transverse section of the shell is gradually reduced in the direction away from the flange, so that the fish back fin type shell is formed, and the resistance borne by the positioning array in the moving process of underwater equipment is effectively reduced; meanwhile, as the flow resistance is reduced, regenerated noise generated by contact of the surface of the shell and water is reduced, and the influence of the regenerated noise on the receiving performance of the positioning array is reduced.

The utility model provides a positioning array and underwater equipment, and relates to the field of underwater equipment. The positioning array comprises a flange, a shell and an electronic assembly, the shell is arranged on one side of the flange, and the shell is in sealing fit with the flange; the section made in the advancing direction of the positioning array is a longitudinal section, and the section made in the direction perpendicular to the advancing direction of the positioning array is a transverse section. The heights of a plurality of transverse sections of the shell are gradually reduced in the advancing direction of the positioning array, and the width of each transverse section of the shell is gradually reduced in the direction away from the flange, so that the fish back fin type shell is formed, and the resistance borne by the positioning array in the moving process of underwater equipment is effectively reduced; meanwhile, as the flow resistance is reduced, regenerated noise generated by contact of the surface of the shell and water is reduced, and the influence of the regenerated noise on the receiving performance of the positioning array is reduced.

We offer a new tai rubber head that closely resembles the true form of fish, octopus, and squid by fully attaching and integrating the bait. [Solution] The lead body 2 is shaped like a fish, squid, or octopus, and eyes 3, which mimic the eyes of the fish, are integrally formed on the front of the body. Fins 4, which correspond to the dorsal and pectoral fins, are integrally formed on the outer circumference of the body. A thread-through hole 5 for passing bait through the body is positioned above the center of gravity of the body and runs from the front to the back of the body.

A robotic dolphin and shark empowered by generative artificial intelligence (Gen-AI) are disclosed, capable of autonomously performing essential tasks such as marine research, environmental monitoring, and underwater inspections. The robotic dolphin's lifelike design includes a head with snout, eyes, mouth, blowhole, body, pectoral fins, dorsal fin, and tail fin, all meticulously crafted to mimic the appearance and behavior of a real dolphin. A trained AI model functions as the brain, processing environmental data captured by video cameras, audio microphones, and sensors to provide guidance commands to a control system that controls the movements of the robotic dolphin. A well-trained live dolphin can serve as a teacher for one or multiple robotic dolphins using a generative AI-based real-time training method, enabling efficient and effective training of robotic dolphins.

The invention relates to an ornamental underwater bionic robot, and belongs to the technical field of underwater bionics. The robot comprises a head unit, a main frame, a front / rear buoyancy adjusting unit, a driving unit, a pectoral fin unit and a tail fin unit, and the outside of the robot is wrapped by bionic streamline buoyancy dimensions. The driving unit drives the tail fin to swing through a multi-joint motor to generate propulsive force, and linear or steering motion is achieved. The pectoral fin unit floats or dives by adjusting a fin surface included angle and cooperating with a tail fin to act; the head unit adopts a four-connecting-rod mechanism to realize opening and closing of a mouth, so that the bionic effect is improved; and a communication positioning system is arranged in the dorsal fin unit to support remote man-machine interaction. All the functional modules are independently sealed, an open type main frame design is adopted, the gravity center coincides with the buoyancy center and is lower than the buoyancy center, and it is ensured that the swimming posture is stable. The device has the advantages of being high in simulation degree, flexible in controllability and low in cost, is suitable for the fields of aquarium exhibition, ocean research and entertainment, and has remarkable practical value.

The utility model relates to the field of bionic fish devices, and discloses an energy-saving mechanical bionic fish which comprises an adjusting device and a driving device, the driving device is arranged at the rear end of the adjusting device, the adjusting device comprises a shell, a fish head is rotatably connected to the front end of the shell, a dorsal fin is fixedly connected to the position, close to the front end, of the top end of the shell, and the dorsal fin is fixedly connected to the tail end of the shell. Ventral fins are fixedly connected to the front positions of the two sides of the bottom end of the shell respectively, a balancing weight is fixedly connected to one side of the top end of the rotating disc, a horizon sensor is fixedly connected to the upper position of the front end of the inner side wall of the shell, an exhaust hole is formed in the rear end of the top end of the shell, and an air bag is fixedly connected to the top end of the inner side wall of the shell; the top end of the air bag is fixedly connected with an air pump. According to the energy-saving mechanical bionic fish provided by the utility model, the swimming direction of the bionic fish can be effectively adjusted by arranging the adjusting device, and meanwhile, the whole device is more vivid by utilizing the driving device.

The utility model belongs to the technical field of underwater bionic equipment, in particular to an underwater navigation device, which comprises a bionic fish shell, a bionic dorsal fin, a fluid sensor and a plectrum, the bionic dorsal fin is arranged at the upper end of the bionic fish shell, the fluid sensor is arranged at the side end of the bionic dorsal fin, and the plectrum is arranged at the tail end of the tail of the bionic fish shell. By arranging the bionic fish shell, the shaftless propelling sleeve, the shaftless paddle ring, the stator, the rotor, the bionic pelvic fin and the bionic pectoral fin, when the structure is used, a steering motor and a shaftless annular motor are powered by a battery, and the steering motor and the shaftless annular motor are jointly connected with an external control unit together with a fluid sensor. Power transmission is achieved through the shaftless annular motor, a stator winding of the shaftless annular motor is fixed to the inner wall of the annular guide pipe, and a rotor inner ring is rigidly connected with the shaftless paddle ring. When current passes through the stator coil, a rotating magnetic field is formed, and the rotor and the shaftless blade ring are directly driven to rotate. By means of the optimized structure, the speed is increased, and meanwhile the movement stability and flexibility are guaranteed.

The invention provides a low-flow-resistance sound-transmission flow guide structure of an underwater unmanned vehicle and a manufacturing method, and belongs to the technical field of underwater unmanned vehicle carrier structures. The low-flow-resistance sound-transmission flow guide structure comprises a body shell plate and a sound-transmission dorsal fin flow guide cover; the body shell plate and the sound transmission dorsal fin fairing are of an integrated structure made of different materials, the body shell plate is installed on a carrier structure of the unmanned underwater vehicle, a load sound baffle is installed in the sound transmission dorsal fin fairing, and a hydrophone array element is installed between the load sound baffle and the sound transmission dorsal fin fairing. The low-flow-resistance sound-transmission flow guide structure provides a high-sound-transmission carrying environment for the hydrophone array elements and protects the hydrophone array elements in all directions, and meanwhile, the structure serves as a part of an unmanned underwater vehicle carrier structure to meet the requirements for strength, low flow resistance and low noise of the unmanned underwater vehicle carrier structure. According to the low-flow-resistance sound-transmitting flow guide structure, the incident flow area exceeding the envelope surface of the unmanned underwater vehicle is reduced to the maximum extent, and the influence of overall water resistance and navigation noise is reduced to a reasonable level.

The invention relates to the field of fish culture early warning, in particular to a carnivorous fish similar feeding intelligent isolation device based on machine vision and an early warning method. The device mainly comprises a culture box, a visual collection module, a system control and data processing mechanism and an array type air curtain generation mechanism located at the box bottom, the visual collection module obtains a water body image in the culture box in real time, and an embedded terminal operates and uses a posture sensing network capable of outputting a target space position and multiple structure key points at the same time. The vector included angle and Euclidean distance of the spine of the fish body are calculated in real time by extracting anatomical key points such as the head, dorsal fins and caudal peduncles of the fish body; when a target fish body is monitored to present a high-curvature attack posture, the system locks a conflict area immediately through coordinate mapping, drives the integrated micropore aerator pipe array to release compressed air, and generates a vertical non-contact bubble barrier between an attacker and an attacked person to realize physical isolation. The invention is suitable for fish culture.

A pressure-resistant cover for deep-sea detection equipment and a forming method thereof belong to the technical field of underwater detectors. The present invention solves the problems of existing underwater detection equipment, such as heavy weight, poor stability in water, and poor sound transmission. The cover body includes a straight tube section and an arc section integrally buckled at one end of the straight tube section. The arc section is a hemispherical or ellipsoidal streamlined structure. A number of dorsal fins are evenly distributed on the upper outer surface of the cover body along the circumference. The balance ring is coaxially arranged with the cover body and fixedly connected to the dorsal fins. The cover body, the balance ring and the dorsal fins are all made of composite materials. Under the same size conditions, the overall weight of the composite material spherical cover is 1 / 4 of the metal material spherical cover, which effectively reduces the weight of the spherical cover. By adopting composite materials combined with hemispherical or ellipsoidal streamlined structure design, its external pressure-bearing function is guaranteed and its sound transmission performance is effectively improved. The dorsal fin and the balance ring play the role of balancing the ocean current in the water, so that the entire detector remains stable in the water.

The present application relates to the field of fish farming early warning, in particular to a kind of intelligent isolation device and early warning method for carnivorous fish cannibalism based on machine vision.The device mainly includes a breeding tank, a visual acquisition module, a system control and data processing mechanism, and an array air curtain generating mechanism at the bottom of the tank.The visual acquisition module acquires real-time water images in the breeding tank.A posture perception network capable of outputting target spatial position and multiple structural key points is used in embedded terminal operation.The vector angle and Euclidean distance of fish spine are calculated in real time by extracting anatomical key points such as fish head, dorsal fin and tail handle.When the target fish presents a high-curvature attack posture, the system immediately locks the conflict area through coordinate mapping and drives the integrated micro-porous aeration pipe array to release compressed air, generating a vertical non-contact bubble barrier between the attacker and the victim, achieving physical isolation.The present application is suitable for fish farming.

The rotatable centrifugal pump volute partition tongue comprises a mounting opening and a rotating shaft, the mounting opening is located in the surface of a centrifugal pump, an opening of the mounting opening is close to an inlet, the rotating shaft vertically extends into the centrifugal pump through the mounting opening, and a partition tongue plate is arranged on the rotating shaft; the section of the tongue baffle is designed according to the contour line of the vertical section of the dorsal fin of the dolphin. According to the rotatable centrifugal pump volute partition tongue, a flow field in a volute can be better matched with the direction of fluid at an outlet of an impeller, the liquid flow impact phenomenon is effectively reduced, and the purpose of improving the working efficiency of a pump is achieved.

The application discloses a tail-breaking accelerating bionic fish, and relates to the technical field of bionic fish, which comprises a bionic fish head module, a bionic fish body module and a bionic fish tail module connected in sequence, wherein the bionic fish head module is provided with a control unit, an energy storage device, a pectoral fin and a dorsal fin, the control unit is electrically connected with the energy storage device, the pectoral fin assembly can swing, the tail part of the bionic fish body module is provided with a propelling mechanism, the bionic fish tail module is provided with a tail-breaking mechanism, the tail-breaking mechanism can make the tail fin separate from the bionic fish tail module and accelerate the bionic fish, the bionic fish body module is provided with a rigidity adjusting mechanism, the rigidity adjusting mechanism can shorten the axial length of the bionic fish body module, and the rigidity adjusting mechanism and the propelling mechanism are in communication connection with the control unit. The bionic fish has the fish body rigidity adjusting design, can adjust the self rigidity, can accelerate and sprint in a short distance, and can select the propeller propulsion and the pectoral fin swing propulsion to adapt to different underwater environments.

The utility model discloses a contractile fishtail capable of changing a motion mode along with a swimming direction, which relates to the technical field of fluid dynamics and comprises a fish head body, a bionic dorsal fin is fixedly connected to the middle of the top of the fish head body, a plurality of fishtail joints are arranged on the left side of the fish head body, and the fishtail joints are hollow inside. Inserting holes are formed in the sides, close to the fish head body, of the multiple fishtail sections, connecting bolts are inserted into the inserting holes, every two adjacent fishtail sections are connected through the connecting bolts, the connecting bolt located on the rightmost side is fixedly connected with the left side of the fish head body, and a vertical tail fin is fixedly connected to the left side of the fishtail section located on the leftmost side; a first transverse tail fin is fixedly connected to the middle of the rear side of the vertical tail fin, and a second transverse tail fin is fixedly connected to the middle of the front side of the vertical tail fin. The rotatable fishtail has the advantages that the rotatable fishtail sections and the mechanical fishtail are mechanically integrated, so that the self-adaptive water flow environment capability of the mechanical fish is improved, the influence on the environment is reduced, and the social benefit is further improved.