17 results about "Dorsal fin" patented technology

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 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 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 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.

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 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 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.

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 invention discloses a fish dorsal fin imitating dual wireless communication and positioning illumination integrated system, and belongs to the technical field of underwater operation equipment control. The system comprises a main control unit, a dual-mode communication module, a positioning module, a lighting module and a power supply module which are all integrated in a bionic dorsal fin shell optimized by fluid mechanics. The dual-mode communication module supports short-range RF and remote 4G communication; the positioning module receives GPS / Beidou signals and provides centimeter-level positioning data. The lighting module comprises a tracing light source and a light supplementing light source which can be independently controlled. Through the highly-integrated design, the problems that traditional underwater equipment is short in communication distance, easy to drift in positioning, single in lighting function and dispersed in system are solved, and the device has the advantages of being compact in structure, small in water resistance, flexible to control, high in reliability and the like and is suitable for various scenes such as underwater detection, monitoring and operation.

The utility model discloses an artificial bait with a tail paillette capable of rotating when moving in water, which belongs to the technical field of artificial bait and comprises a bionic artificial bait, a mounting groove is arranged at the tail of the bionic artificial bait, a connecting wire is mounted in the mounting groove, a front ring is sleeved on the connecting wire, and a rear ring is sleeved on the front ring. A rotatable paillette structure is installed on the tail portion, when the artificial bait moves in water, water flow acts on the paillettes to enable the paillettes to rotate around the bearing in a conversion mode, the twinkling light and shadow effect and the flexible dynamic expression can be generated, the attention of fishes is greatly attracted, and the fish luring effect is remarkably improved. The fish eye holes in the head of the bionic lure, the bionic gills on the rear side and the bionic dorsal fins on the back highly simulate real aquatic organisms in form, and the dynamic effect of the tail paillettes is matched, so that the lure presents a vivid biological movement posture in water, the attraction to fishes is further enhanced, and the success rate of fishing is increased.

The article relating to the present design is a skin beauty massager equipped with galvanic, ultrasonic, and LED functions, and is used to apply lifting massage and ultrasonic vibrations to the skin. The present design is shaped like a dolphin and is characterized by its dolphin-shaped silhouette composed entirely of curved surfaces. Furthermore, the present design has two skin contact parts: an upper contact part corresponding to the dolphin's mouth and a lower contact part corresponding to the dolphin's tail, and the arrangement of these parts allows for intuitive recognition of the application area for each function. In addition, the part of the present design corresponding to the dorsal fin is formed to be gripped between the fingers during use, improving grip and preventing slippage.

The utility model discloses an assembled and combined type odd shrimp profiling toy which comprises a head body, a body body, a tail body and a tail fin body which are sequentially hinged. The body comprises a base plate, a clamping plate and a dorsal fin plate. The number of the clamping plates is multiple, panels of the multiple clamping plates are arranged perpendicular to the panel of the base plate and connected with the base plate in an inserted mode, and 8-shaped holes are formed in the two sides, opposite to the base plate, of the clamping plates. The back fin plate comprises a plate body and a cross plate hinged to one end of the plate body. The back fin plate is arranged between the two opposite panels of every two clamping plates, and the two limbs of the cross plate are hinged into the two opposite 8-shaped holes of the two clamping plates respectively. According to the utility model, the head body, the body body, the tail body and the tail fin body are assembled in a splicing combination manner, so that the spliced combined type odd shrimp toy with stronger simulation and interestingness is formed, the flexibility of the toy is improved in a hinging manner, the action dimension is higher, and the interestingness is stronger.

The application discloses a molecular marker for identifying the genetic sex of a Zebra shark and a method for identifying male and female Zebra sharks, wherein the sequence of the molecular marker is shown as SEQ ID NO. 1. The method for identifying the genetic sex of the Zebra shark is simple and fast in operation, and a small amount of back fin is cut for sample collection, so that the Zebra shark is slightly damaged. An alkali lysis method is used for preparing a genome, and the DNA harvesting amount is high, and the requirement for a tissue sample is low. The gender identification molecular marker and the identification method provided by the application have high accuracy of identification results, are not affected by tissue specificity and environment, and have important values for Zebra shark gender control and all-male seed cultivation.

The utility model discloses an underwater monitoring robotic fish which comprises a robotic fish body, a monitoring camera is fixedly installed on the top of the front end of the robotic fish body, a dorsal fin is fixedly connected to the middle of the top end of the robotic fish body, and a first connecting block is fixedly connected to one end of the robotic fish body. A driving assembly is rotatably connected to the end, away from the robotic fish body, of the first connecting block, mounting transverse plates are symmetrically and fixedly mounted in the robotic fish body, a control assembly is fixedly connected to one sides of the two mounting transverse plates, and a guide assembly is rotatably connected between the two mounting transverse plates; a buoyancy block is fixedly installed at the top end in the robotic fish body, a balancing weight is fixedly connected to the bottom end in the robotic fish body, and pushing assemblies are symmetrically and fixedly installed at the bottoms of the side faces of the robotic fish body. A streamline fish body structure is adopted, the underwater swimming resistance is reduced, the swimming efficiency and the cruising ability of the robotic fish are improved, and the device is convenient to hover; objects can be observed in detail, and the monitoring quality is ensured.

The invention discloses an artificial propagation method of clarias lazeli. The artificial propagation method comprises the following steps: S1, parent screening and breeding: selecting female clarias lazeli and male clarias anodontophaga as parent fishes; carrying out intensive cultivation on the parent fish; s2, parent fish screening and artificial spawning induction, wherein the selected parent fish is subjected to artificial spawning induction through hormone injection, and then artificial insemination is conducted; s3, hatching management of fertilized eggs: adopting a conical plastic barrel for hatching, and maintaining water in the conical plastic barrel to be in a flowing state through a circulating water system; s4, juvenile fish breeding, wherein after the juvenile fish is bred for 30 days, the juvenile fish with the dorsal fin height / body length larger than or equal to 15% is screened out for phenotypic optimization. According to the method, the appearance of the clarias lazeli and the growth speed of the clarias anodontoides are integrated through a hybridization technology, so that the progeny morphology of the clarias lazeli is close to that of the Giethiwei shark, and the industry is promoted to be upgraded towards the high value-added direction In the specific breeding method, the fertilization rate is effectively increased and the survival rate of juvenile fishes is increased through cooperation of multiple factors such as parent fish selection, breeding, water temperature of each stage, water flow, illumination and nutrition support.