30 results about "Fish fin" patented technology

The invention relates to the technical field of image enhancement, in particular to a turbid water fish image enhancement system based on image enhancement, which comprises an attenuation feature layering module used for acquiring a turbid water fish image, extracting a color attenuation value and a local contrast value of each pixel point, and outputting the color attenuation value and the local contrast value; and calculating the pixel attenuation degree influenced by the suspended matters in the water body and the background scattered light to obtain a pixel attenuation distribution diagram, and setting a plurality of attenuation thresholds. According to the method, a turbid image is divided into a plurality of layers such as a foreground, a middle scene and a background by calculating a color attenuation value and a local contrast ratio of each pixel influenced by suspended matters in a water body and scattered light, and then differential gain coefficients are applied to extracted initial details such as fish scale and fin textures according to the layers to carry out injection; high-fidelity enhancement of a key foreground target is realized, and excessive sharpening and noise amplification of a background area are avoided.

The underwater robot comprises a shell assembly, a supporting assembly and a sealed cabin, and a containing space is formed in the shell assembly; the supporting assembly is supported in the accommodating space; the sealed cabin body is fixedly connected into the supporting assembly, and a plurality of connecting interfaces are formed in one end of the sealed cabin body; wherein the shell assembly comprises a first shell and a second shell, the first shell is provided with a fish fin part, the second shell is provided with a fish tail part, the containing space is formed in the first shell, the second shell is detachably connected to one end of the first shell, and the second shell and the multiple connecting interfaces are oppositely arranged. By arranging the fin part on the first shell and arranging the fish tail part on the second shell, the shell assembly formed after the first shell and the second shell are connected has a bionic design, and the bionic design has the effect of reducing scare on aquatic organisms and can also provide a stabilizing effect at the same time. In addition, the shell assembly is in a streamline design, so that the motion performance of the underwater robot is improved.

The utility model discloses a water treatment filter material performance contrast experiment device which comprises a water tank and a water inlet pipe, experiment liquid is pumped into the water tank through the water inlet pipe, the water tank is arranged in an inclined mode, a notch is formed in the bottom of the water tank, and fin grooves are formed in the outer side of the lower end of the water tank. The fin groove comprises a flow guide part opposite to the notch and a storage part mounted at the side lower end of the flow guide part, the flow guide part and the storage part form a containing chamber for containing a filter material, the side, away from the flow guide part, of the storage part is rotationally connected with the lower end of the water tank, and the flow guide part is in a fin shape. According to the utility model, relevant operation in a laboratory is facilitated, and the experiment efficiency is further improved.

This invention discloses a specific DNA fragment, primers, and applications for sex identification of the longfin sclerotium. PCR amplification and agarose gel electrophoresis were performed using PCR primers. The results showed that individuals with a specific 271bp band were male, while those without a band were female. This invention discloses a molecular marker, primers, and identification method for sexing the longfin sclerotium. Sexing can be determined by taking fin rays without killing the fish; it can also identify the sex of juvenile fish whose sex cannot be determined by appearance. It has advantages such as accuracy, simplicity, speed, and minimal harm to the fish, providing important assistance for the conservation of wild longfin sclerotium resources and the development of the aquaculture industry.

The utility model belongs to the technical field of surfboard fin bases, and particularly relates to a foldable surfboard fin base which comprises a first base and a second base, a thin film hinge is fixedly connected to the joint of the lower portion of the first base and the lower portion of the second base, and a first limiting shell is fixedly connected to the top of the first base. The top of the second base is fixedly connected with a second limiting shell, and fish fins are placed in the second limiting shell and the first limiting shell. By arranging the first base, the second base and the film hinge, the first base and the second base can rotate relatively under the action of the film hinge, so that the base can be folded, the occupied space of the base is reduced, and the base is convenient to carry and store; and by arranging the first limiting shell and the second limiting shell, the fins can be replaced.

The invention relates to bait with artificial beards and a forming mold thereof, and relates to the technical field of bait design, the bait comprises a fishhook, the fishhook is installed at the end of a connecting rod, a bottom limiting column is fixed to the connecting rod, simulation sliding columns are arranged on the bottom limiting column in an array mode, and the size of the simulation sliding columns is smaller than that of the bottom limiting column; limiting mechanisms are arranged on the simulation sliding columns in a simulation sliding mode, and simulation beards are arranged on the limiting mechanisms. Through cooperation of the unique limiting mechanism and the simulation sliding column, when bait is under the action of water flow or controlled by a fishing line, the limiting mechanism can drive the simulation sliding column to slide on the sliding column in a reciprocating mode. The continuous and autonomous local movement can extremely realistically simulate the swinging posture of the fins when the small fish swims, the fish luring effect is greatly enhanced, and the problem that the fish luring action disappears when the main body of the traditional artificial bait is static is effectively solved.

The invention relates to a large-scale marking method for released small-specification fries based on fin ray strontium marking, which comprises the following steps of: in a fish fry breeding stage, performing strontium marking on the small-specification fries for several hours by increasing the concentration of strontium ions in seawater in a breeding pool, so that fish fin rays form a'high-strontium marking ring '; and after the marked fish is recaptured, cutting fin rays of the marked fish to detect the content of the strontium element. The method does not depend on otolith, is factory-like, is low in marking cost, and does not cause lethal injury to fishes during sampling.

The utility model discloses a fish-shaped toy boat which comprises a fish-shaped boat body and a marching driving device, the fish-shaped boat body is provided with an inner cavity, and the marching driving device is installed in the inner cavity of the fish-shaped boat body. The fish-shaped ship is characterized by further comprising a steering mechanism and two pelvic fins, and the two pelvic fins are rotationally arranged on the left side and the right side of the fish-shaped ship body respectively; the steering mechanism comprises a first steering driving device and a first linkage mechanism capable of driving at least one pelvic fin to rotate, the first steering driving device is installed in an inner cavity of the fish-shaped ship body, and the first linkage mechanism is in transmission connection with the power output end of the first steering driving device. The fish toy boat can simulate the fish to use the fins to control steering when the fish swims in water, and is simple in structure and convenient to adjust and control.

The invention discloses a large-size hard, brittle and thin wafer abrasive particle track controllable grinding method and device. The large-size hard, brittle and thin wafer abrasive particle track controllable grinding device comprises a bionic fin-shaped texture grinding tool head and a piezoelectric ceramic ultrasonic body. A large number of fin-shaped micro texture units and crossed micro channels are arranged on the periphery of the texture surface of the tool head, and the central part is a smooth plane. During ultrasonic high-frequency vibration, the fin-shaped texture structure of the outer ring drives fluid to form vortex-shaped fluid, and abrasive particle track regulation and enrichment are achieved; cavitation bubbles are generated in the center and impact to remove the material after collapse; and the crossed micro-channels can promote the circulation of the grinding fluid and discharge grinding dust. According to the method, the abrasive particle track is precisely restrained through the fin-shaped textures, the abrasive particles are driven to be enriched and impact the surface of the wafer, and the material removal efficiency and the grinding precision are remarkably improved while the machining damage and fragment risks of the large-size thin wafer are reduced.

1. Name of the designed product: swimming cap (fish fin). 2. Use of the designed product: for swimming aids. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The application discloses a modular multi-stage adaptive variable stiffness bionic fish fin and a robotic fish. The bionic fish fin comprises a main driving part, a swing part, a first elastic member and a variable stiffness assembly. The swing part is hinged to the main driving part and swings with the main driving part. One end of the first elastic member is connected to the main driving part, and the other end is connected to the swing part. The variable stiffness assembly comprises a second elastic member and a second traction cable. One end of the second elastic member is connected to the main driving part, and the other end is connected to the second traction cable. The second traction cable is connected to the swing part. The length of the second traction cable is greater than the distance between the swing part and the second elastic member. The first elastic member is used to provide a first reset force to drive the swing part to reset. When the swing part swings greatly, the second elastic member provides a second reset force to the swing part to assist in driving the swing part to reset, so that the bionic fish fin can realize graded stiffness adjustment under different swing amplitudes without the need for additional power sources or control systems.

A fish-shaped robot with omnidirectional motion control for deep-sea riser current disturbance includes a vibration analysis module and a current disturbance unit. The current disturbance unit includes a fish-shaped fairing and a sensor module mounted on the fairing. One end of the fairing is a flow-splitting tip. The sensor module acquires current ocean current information. A flexible fish tail and a tail fin are connected sequentially behind the fairing. The flexible fish tail includes at least three sequentially connected servos. The servos move independently, mimicking the swaying of a fish tail. The tail fin, similar to a fish fin, sways with the servos. The vibration analysis module analyzes the ocean current information collected by the sensor module and sends control signals to control the servos of the flexible fish tail to sway. The resulting feedback cancels out vortices. This invention achieves flexible tail swaying by rotating three connected servos, simulating the swimming posture of a fish in water. This generates periodically falling vortices, which cancel out the vortices causing vortex-induced vibrations, thus suppressing vortex-induced vibrations.

The application discloses a boxfish type bionic robot fish driven by a shape memory alloy, which comprises a bionic fish base body, a pectoral fin, a flexible skin, a stroke amplification mechanism and a shape memory alloy wire driving mechanism arranged in the base body, and the stroke amplification mechanism is connected with the pectoral fin and the shape memory alloy wire driving mechanism at two ends respectively; the pectoral fin comprises upper and lower swing parts in Z-shaped structure, and the vertically extended two ends are a water-encountering part and a connecting part respectively; the front surface of the water-encountering part is arc-shaped, and the back surface is planar; when electric current is applied, the shape memory alloy wire contracts, the stroke amplification mechanism drives the pectoral fin to swing backward, the back water flow pushes the back surface of the water-encountering part, and the pectoral fin is opened to provide forward power for the bionic fish; when the application of electric current is stopped, the shape memory alloy wire restores to the original length, a spring pushes the sliding block and the shape memory alloy wire to the initial position, the stroke amplification mechanism drives the pectoral fin to swing forward, the front water flow pushes the front surface of the water-encountering part of the swing structure, the pectoral fin is closed, and the resistance is reduced.

The invention provides a BPNN-based bionic takifugu fin self-adaptive movement mechanism, and belongs to the technical field of bionic fish driving, the BPNN-based bionic takifugu fin self-adaptive movement mechanism comprises a base, the base comprises a main control cabin section and an energy cabin section, the main control cabin section comprises a control system, the control system comprises a main controller, a BPNN-based pressure monitoring system and a signal conditioning circuit, and the energy cabin section comprises an energy source module; the controller is connected with the bionic flexible fluctuation propulsion system, the signal conditioning circuit is connected with the sensor cluster system, and the sensor cluster system is installed on a fin ray of a bionic fin of the bionic flexible fluctuation propulsion system. According to the invention, fish form and joint linkage is accurately simulated, and flexible and smooth bionic fish fins are molded; the pressure monitor integrated at the fin can sensitively capture real-time pressure data generated by water flow to the fin, accurately sense subtle changes of the water flow, remarkably enhance the adaptive capacity to the environment, promote the energy efficiency, and explore a more accurate and energy-saving technical path for application scenes such as underwater robots and marine scientific investigation equipment.

The utility model discloses a protective type fish-fin-imitating bulb convenient for heat dissipation, which relates to the technical field of vehicle-mounted lamps and comprises a base, the top of the base is fixedly connected with a bump, and the bump is of a fish-fin-imitating structure; an air channel is formed in the protruding block, an air inlet pipe is installed in the air channel, a first support and two second supports are fixedly connected to the interior of the air inlet pipe, a generator is fixedly connected to the interior of the first support, a worm gear is fixedly connected to the input end of the generator, and the worm gear is installed between the two second supports. According to the protective fish-fin-imitating type bulb convenient to dissipate heat, the protruding blocks are of fish-fin-imitating structures, the heat dissipation surface area is remarkably increased, the metal heat conduction materials used by the protruding blocks are combined, the conduction efficiency of heat from the LED lamp beads to air is greatly improved, an efficient heat dissipation air channel is formed by the internal conical air inlet pipe, and the heat dissipation efficiency is greatly improved. The bionic structure and the forced convection air channel are combined, so that efficient passive and active cooperative heat dissipation is achieved.

1. The name of the design product: ornament (fish fin scream series). 2. The use of the design product: for viewing, decoration and space creation. 3. The design points of the design product: the combination of shape, pattern and color. 4. The picture or photo that best shows the design points: perspective view. 5. The design for which protection is sought includes color. 6. The bottom surface of the design product is a part that is not easy to see or cannot be seen during use, and the top view is omitted.

The invention discloses a preparation method of salmon oil with high content of Omega-3 fatty acid. The method comprises the following core steps: 1) crushing: cleaning fresh salmon trash (main components comprise fish heads, fish tails, fish fins and residual minced meat parts after processing), absorbing moisture, and then fully crushing the salmon trash (the main components comprise fish heads, fish tails, fish fins and residual minced meat parts after processing); (2) baking: sealing the minced salmon, and baking at a constant temperature of 40-60 DEG C for 60-180 minutes to promote the fish oil to be fully separated out; and 3) centrifuging: filtering the obtained fish oil mixture, performing low-temperature high-speed centrifugal treatment, and separating to remove settled impurities after the centrifugal treatment is finished, thereby obtaining the high-quality salmon oil. According to the method, efficient utilization of salmon trash resources is achieved, important nutrients in the salmon oil are effectively reserved, the method has the advantages of being simple in process, low in cost, low in energy consumption and the like, and effective technical support is provided for increasing the additional value of the salmon processing industry.

1. Name of the product in this design: Surfboard Fin and Base (B). 2. Purpose of this design: The surfboard fin is a balancing wing on the surfboard, and the base is used to fix the fin. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D view of the assembled state.

The embodiment of the utility model provides a carp type power transmission landscape tower. The carp type power transmission landscape tower comprises tower legs, a tower body and a tower head. In the tower head part, the left ground wire cross arm and the right ground wire cross arm are set to be'fish beards', the left wire cross arm and the right wire cross arm are set to be'fins', and decorating parts are arranged on the tower head to increase the characteristics of'fish eyes' and'gill ', so that the arrangement of'fish head' and'fish body 'of the'carp' is completed in the tower head part. The tower body and the tower legs are shortened, so that the appearance of the tower body and the tower legs is close to the fish tail of a carp. All parts of the iron tower are converted into carp landmark parts, so that the iron tower has a better carp shape, the environment can be beautified, and meanwhile the structure further has good bearing capacity and stability.

1. Name of this design: Spray gun tail (shark fin). 2. Purpose of this design: This partial design is used as the tail of a spray gun; the entire spray gun is used for spraying. 3. The key design feature of this product is the shape of the spray gun's tail. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. Other matters requiring explanation: This design patent application is a partial design patent application. The gray-covered parts in each figure are the parts of the partial design that are not claimed for protection, while the parts outside the gray in the figures are the content for which patent protection is sought. This application does not claim protection for color; color is only used to distinguish the partial appearance design that needs protection.

The application discloses a weak strain of Cyprinid herpesvirus 2 (CyHV-2) G-RP7 for preparing a common carp hematopoietic organ necrosis disease vaccine, and the preservation number is CGMCC No. 24099. The weak strain is used to infect a goldfish fin cell line (RyuF-2), and after 4-5 days, typical cytopathic effect (CPE) is observed on the cells, and the continuous passage can stably cause the cytopathic effect. The weak strain is sensitive to the RyuF-2 cell line, realizes in-vitro stable culture and amplification of the weak strain, and the TCID50 of the virus suspension is determined by a Reed-Muench method 50 up to 10 5.9 / ml. The virulence of the weak strain does not return to be strong after continuous in-vitro and in-vivo passages. The weak strain can be used for preparing the common carp hematopoietic organ necrosis disease vaccine, and both immersion immunization and intraperitoneal injection immunization can stimulate the fish to produce specific immune response, and have good anti-CyHV-2 infection effect.

The present application provides a kind of flexible electric bionic fish fin, including fin part and motor drive part, by base installation to the main frame of bionic robot, fin part includes frame structure, fin part swing mechanism and fin part twist mechanism, fin part swing mechanism is driven by two flexible elastic belts, two elastic belts are synchronously driven by electric drive part installed in base, respectively along the fin direction with opposite speed and direction reciprocating motion, two described elastic belts are hinged with frame structure, fin part twist mechanism includes universal joint in fin part and long shaft connected by universal joint, long shaft connected by universal joint is driven by electric drive part installed in base, so that fin part is twisted around root part.The present application adopts multi-section universal joint coupling to drive fish fin twist, and variable cross-section elastic belt makes bionic fish fin device swing stiffness more closely real fish fin stiffness, twist and swing superposition effect makes movement more bionic, improves fin part swing power, improves the swimming speed of bionic fish.

This invention relates to a multi-point excited variable stiffness tensioned biomimetic robotic fish structure, comprising a head module, a flexible body module, and a fin module. The flexible body module includes a tensioned integral structure, a flexible fish skin, and active and passive ropes. The tensioned integral structure includes multiple joint components, adjacent of which are connected by springs. The fin module includes left and right pectoral fins and a flexible caudal fin, with the caudal fin base connected to the rearmost joint component. The head module includes a head base, a drive mechanism, a first guide rail slider mechanism, and a head shell. The head base is connected to the foremost joint component. The drive mechanism includes two pairs of servos. The left and right sides of the upper and lower servo blades are connected to the middle joint component and the caudal fin base via the first and second active ropes, respectively. The left and right servo blades are connected to the left and right pectoral fins, respectively. One end of the upper and lower passive ropes is connected to the first guide rail slider mechanism, and the other end is connected to the caudal fin base. This biomimetic robotic fish structure improves the flexibility and realism of the biomimetic robotic fish.

The invention discloses an independent waterproof modular bionic swinging fin, and belongs to the technical field of underwater driving. Comprising a base sealing assembly with a static waterproof structure, a direct current motor fixed in the base sealing assembly, a swing arm assembly operatively connected with a motor output shaft of the direct current motor, and a dynamic waterproof structure arranged between the base sealing assembly and the swing arm assembly. The working end of the output shaft of the motor is obliquely arranged, and when the output shaft rotates, the swing arm is driven to swing back and forth through the transmission effect of the limiting column, so that the fin-shaped surface is driven to generate propulsive force. Meanwhile, the invention provides a simple manufacturing method of the waterproof film, and the film required by the dynamic waterproof structure can be rapidly manufactured. A modular design, an efficient driving scheme and a simple, convenient and flexible waterproof scheme are adopted, the limitation that a traditional underwater bionic swinging fish fin is complex in assembly, single in waterproof scheme and high in cost is effectively overcome, and the underwater bionic swinging fish fin has great significance in promoting development of an underwater driving technology.

This invention relates to an amphibious variable stiffness fin controlled by shape memory alloy, comprising: a pectoral fin root mounting base, a rotatable coaxial center, a fixed boundary main fan bone, an intermediate driven fan bone, a driving boundary main fan bone, a flexible film, an arc-shaped groove, a cylindrical slider, a first baffle, and a second baffle. The fixed boundary main fan bone is fixed to the rotatable coaxial center, and the driving boundary main fan bone rotates around the rotatable coaxial center. The intermediate driven fan bone is located between the fixed boundary main fan bone and the driving boundary main fan bone, and is mounted on the pectoral fin root mounting base via the rotatable coaxial center. The arc-shaped groove is mounted on the pectoral fin root mounting base with the coaxial center as its center. The root driving part of the driving boundary main fan bone is rigidly connected to the cylindrical slider. The first baffle and the second baffle are located on both sides of the arc-shaped groove. Compared with the prior art, this invention has the advantages of simple control logic and better adaptability to water-land transition conditions.

The present application relates to a kind of based on Q learning and bionic fish fin bar bias PLOVER control method, compared with traditional control method, the present application does not need to establish control object model, by collecting experimental data, offline training Q table, then table is transplanted to prototype controller, control variable is obtained by table lookup, control prototype is swimming in fixed depth.Compared with other reinforcement learning control method, it is low to hardware resource requirement, and space demand is small, power consumption is small, and it is easy to realize.It is beneficial to have in that the hardware requirement of controller is low, and ordinary single-chip microcomputer can be realized, in addition to saving cost, it also reaches the effect of saving space and energy saving.No need to establish the mathematical model of control object, since bionic model is more difficult to establish, therefore, a large amount of time cost can be saved.No need to establish rule base with expert experience to achieve the pitch control of robotic fish, Q table will learn "expert experience" when training.

1. Name of the product in this design: Swimsuit (Fish Fin). 2. Intended use of this design: for swimming equipment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention discloses a marine noise monitoring device, relating to the field of marine environmental monitoring technology. It includes a main buoy box, with a float cone fixedly connected to its bottom. Both the float cone and the receiving groove are hollow plastic structures to ensure buoyancy in seawater. A lifting rod is installed inside the float cone, and a probe is fixedly connected to its bottom. An underwater noise monitoring instrument is installed in the probe. A concave receiving groove is provided around the float cone, and an outward-folding rod is installed in the receiving groove. The end of the outward-folding rod is rotatably installed inside the receiving groove. A drive rod is rotatably installed on the main buoy box at a position corresponding to the outward-folding rod. A push-pull rod is rotatably connected to the end of the drive rod away from the main buoy box. This invention drives the drive rod to swing downwards, pushing the outward-folding rod to open outwards and pulling out the fins, forming a structure similar to fish fins. This creates resistance against seawater, making it less prone to drifting or rotating when blown by the wind, thus reducing the device's mobility and improving its stability during detection.

1. Name of the design product: imitation soft bait (fish fin swing type). 2. Use of the design product: the design product is used for fishing lures. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: perspective view.

The application relates to a bionic jellyfish robot driven by a bistable soft actuator. The bionic jellyfish robot comprises a head assembly and a propulsion mechanism, the head assembly comprises a shell and a control system, the control system comprises a pneumatic telescopic cylinder; the propulsion mechanism comprises a bistable soft actuator connected with the pneumatic telescopic cylinder, the bistable soft actuator is driven to realize first and second stable state switching through the pneumatic telescopic cylinder; the bistable soft actuator is obtained by cross combination of a plurality of bistable curved beams sharing a top surface, first soft hinges are arranged on both sides of the top of each bistable curved beam outside the top surface, and a fish fin structure is arranged on each bistable curved beam; when the pneumatic telescopic cylinder is actuated, the bistable soft actuator realizes jumping between the first and second stable states through the first soft hinges. The bionic jellyfish robot has a unique bistable soft actuator structure design, can achieve the collaborative matching of low driving force and high output energy, and simultaneously decouples the pulse propulsion and steering functions, thereby avoiding the shortcomings of propulsion efficiency and steering sensitivity constraints.