44 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 utility model discloses a junction box, which comprises a box cover, a bottom plate, a diode, a terminal assembly and a cable, the diode is arranged on the bottom plate; the box cover is buckled on the bottom plate, the windward side of the box cover is in a fin shape, and the leeward side of the box cover is provided with a wiring hole; the terminal assembly is arranged in the wiring hole; the cable is arranged in the terminal assembly in a penetrating mode and extends into the box cover, and the inner end of the cable is connected with the diode. The junction box comprises a box cover and a bottom plate, the box cover is buckled on the bottom plate, the windward side of the box cover is in a fin shape, the box cover is provided with a smoother curved surface and has a lower wind resistance coefficient, and wind resistance generated by loading and driving is reduced.

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 application relates to a hybrid drive control method of a cross-medium robot and the cross-medium robot. The hybrid drive control method of the cross-medium robot comprises the following steps: calculating the vibration head motor power, unfolding the fish fin component in the swimming state, and swinging the peristaltic component; obtaining the current value of the vibration head current loop, judging whether the robot head contacts sand or not, if not, the robot keeps the swimming state, if yes, controlling the driving force of the robot vibration head, switching the robot to the peristaltic state, folding the fish fin component, and peristaltic movement of the peristaltic component. The cross-medium robot comprises a vibration component, a fish fin component and a peristaltic component, has two hybrid drive modes of fish fin swing and tail spiral and vibration head vibration and tail spiral, forms the peristaltic movement and swimming movement states, ensures that the robot can pass through seawater and sand on the seabed, enhances the concealment of the robot on the seabed, the control method has low calculation amount, the cross-medium robot has low cost, and the hybrid drive switching process is fast.

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 present application relates to the technical field of underwater robots, and discloses a multi-modal underwater robot with rigidity-area cooperative regulation, wherein a foldable and expandable fish fin piece can change its expansion area to realize a high foldable and expandable ratio between full expansion and folding, and expand the regulation range of the effective area; the foldable and expandable fish fin piece can be folded and contracted, and the contracted state has a compact shape and small flow area, thereby reducing fluid resistance. Secondly, the variable-area foldable and expandable mechanism adopts a first steering engine as a driving source, and drives the rotation of the first foldable and expandable arm through a gear transmission pair; the angular displacement response time of the first steering engine output can reach milliseconds, there is no thermal coupling link in the whole transmission chain, the thermal hysteresis effect is eliminated, the time required for the expansion and contraction process is greatly shortened, and the multi-modal underwater robot can quickly adjust the expansion area of the foldable and expandable fish fin piece according to the real-time sensing of the flow field change and the motion state, thereby solving the problem of dynamic response hysteresis of the traditional bionic tail fin.

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.

The invention provides an intelligent bionic fish based on a piezoelectric fiber material and a shape memory alloy and a driving method.The intelligent bionic fish comprises a piezoelectric fiber material driving layer, a shape memory alloy driving layer and a cooperative control module, the piezoelectric fiber material driving layer comprises a plurality of MFC pasters embedded in flexible fins of the bionic fish, and the MFC pasters are connected with the shape memory alloy driving layer; the fins are excited to resonate through high-frequency vibration to generate low-amplitude swing; the shape memory alloy driving layer comprises an SMA spring array which is embedded in the annular fish body structure, and SMA springs are driven to rapidly contract through electric heating to achieve overall large-scale bending deformation and local form change of the bionic fish; and the cooperative control module is arranged at the fish head, and adopts a layered driving strategy and time sequence cooperative control logic to dynamically combine action modes of the piezoelectric fiber material driving layer and the shape memory alloy driving layer. By complementarily utilizing the rapid deformation capacity of the SMA and the high-frequency driving characteristic of the MFC, the performance bottleneck of a single driver is broken through, and the underwater maneuverability and energy efficiency of the bionic fish are improved.

The utility model discloses a portable fish migration GPS positioning device with self-supply kinetic energy, which comprises a head elastic ring belt and a tail elastic ring belt, the head elastic ring belt and the tail elastic ring belt are sleeved on the surface of a fish body, the head elastic ring belt is close to the position of a front fish fin, and the tail elastic ring belt is close to the position of a rear fish fin. An elastic strap is arranged between the head elastic girdle and the tail elastic girdle, and a GPS positioning device, a miniature storage battery and a miniature water flow power generation device are arranged on the elastic strap; the utility model solves the problems that the GPS positioning device added on the migratory fish at present causes permanent physiological trauma to the migratory fish, and the GPS positioning label of the migratory fish cannot monitor the long-distance, large-span and long-term fish trajectory.

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.

1. The name of the design product: nursing pants (fish fin nursing pants). 2. The use of the design product: nursing pants for patients. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view. 5. The design product is a thin product, omitting the left view; the design product is a thin product, omitting the right view; the design product is a thin product, omitting the top view; the design product is a thin product, omitting the bottom view.

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.

The fish scale plane is provided with a handle section and a planer tool section, the left side and the right side of the planer tool section symmetrically extend downwards to form two planer tools, sawteeth are machined on the lower edges of the planer tools, and the axis of the planer tool section and the axis of the handle section form an obtuse angle. The scaler has the advantages that by means of the design of the lifting angle of the planer tool section, hands are effectively prevented from being stabbed by fish during scaling; the front end of the fish scale plane is sharp and thin and can go deep into the belly of the fish to remove fish bone blood; fish scales can be effectively prevented from splashing; the sharp end of the planer tool is thin and provided with sawteeth, so that the planer tool can extend into places which cannot be touched by other tools due to the fact that the planer tool is thick, such as fish scales around fish cheeks, fish scales around shark fins and fish scales around fish heads, and the planer tool is convenient to use.

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 invention relates to a channel catfish pectoral fin positioning and cutting device and method. The channel catfish pectoral fin positioning and cutting device is provided with a fish carrying assembly, a fin positioning assembly and a cutter assembly. Through fish mouth positioning, a nitrogen spring in the head direction and thrust acting on a brush roller on pectoral fins, positioning of a fish body in the pectoral fin arranging and cutting process is achieved, the thrust of the brush roller on the fish loses efficacy after fin cutting, and a fish carrying assembly is reset; in the movement process of the electric cylinder, the machining state is judged based on data changes of the pressure sensor, the distance and the rotating speed of the brush rollers on the two sides are adjusted in real time, and movement control over the brush rollers is achieved. In the aspects of fish body positioning and motion control, pectoral fin arrangement, fish feeding and fin cutting of objects of different specifications and sizes can be achieved only through cooperation of an electric cylinder and a synchronous belt driving mechanism. Wherein in the pectoral fin finishing stage, the distance between two brush rollers is minimum, so that fin separation is facilitated; in the fin cutting stage, the distance between the two brush rollers is the largest, so that the positions of the two brush rollers and the rotary cutter are staggered, and the rotary cutter is prevented from interfering with the brush rollers.

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.