668results about "Fishing nets" patented technology

A control system for a towed object (1, 6; 20; 30; 50) in or on a body of water comprise one or more towing members (3) extending between the object (1) and a towing vessel (2). One or more ballast members (4) are movably connected to a respective one of said one or more towing members (3) and controllably movable at least a distance along its respective towing member. The towed object (1) may be controlled by moving one or more ballast members (4) on a towing member (3) in order to control the catenary (c) of a towing member (3). Individual ballast members (4) may be manipulated individually in order to correct, preserve or otherwise change the geometry of a trawl.

A seine net position measurement system utilizes a plurality of sensor modules coupled to the seine net to determine the seine net position by recovering seine net position data, such as depth data, upon retraction of the seine net to the boat. The sensor modules may be configured proximal to the bottom of the net or the leadline. A depth profile of the net, as well as a rate of sinking of the net may be determined from the position data. The sensor modules have a sensor wireless signal transceiver that transmits a wireless signal to a wireless signal transceiver that sends the data to a computer for processing. The computer may be on the boat or part of a cloud computing system. This system is economical and enable a large number of sensor modules to be used to provide better accuracy of the net position.

Disclosed is a non-steel high strength data transmission cable having a strength member (5) and a core (1). The high strength data transmission cable includes a length of a core-cable (10), the length of core-cable (10) includes core (1) plus at least one fiber-optic conductor (2) that is:(i) disposed in a helical shape; and(ii) completely encased in a solid, flexible material.Also disclosed is a process for making a high strength data transmission cable. The high strength data transmission cable is capable of being wound on a winch under tensions and surging shocks experienced by a fishing trawler, and provides high quality data signal transmission and resolution so as to permit use for transmitting data during fish trawl operation from high-resolution sonars used to monitor fish caught.

The utility model relates to a floating type fishing light complementary system net drawing device which comprises a plurality of first rope drawing devices which are evenly distributed on a floating platform in the circumferential direction. The first inhaul cables are evenly distributed in the circumferential direction of the net cage, the lower end of each first inhaul cable is connected with a balance weight device, and the upper end of each first inhaul cable is provided with a first rope collecting device; the second rope winding device is arranged on the floating platform; the middle rope binding part is arranged along the central axis of the counterweight part; the second inhaul cables are evenly connected to the balance weight component, one end of each second inhaul cable is fixedly connected with the balance weight device, and each second inhaul cable extends to the middle rope binding component from the position below the bottom netting, movably penetrates through the middle rope binding component and then extends upwards to the second rope collecting device. The second inhaul cable is tightened, the section, located below the bottom netting, of the second inhaul cable supports the bottom netting, the middle of the bottom netting is high, the periphery of the bottom netting is low, and therefore the fishes and the shrimps are concentrated towards the edge of the bottom netting, and the fishing effect is facilitated.

The invention provides a three-dimensional multi-dimensional oceanic nekton monitoring method based on artificial intelligence, and relates to the technical field of oceanic nekton monitoring, and the method comprises the steps: deploying a temperature-salinity-depth section plotter and an acoustic Doppler flow velocity section plotter, collecting data, configuring an environment parameter data set, obtaining a three-dimensional environment parameter data set, and obtaining a three-dimensional environment parameter data set; and a multi-dimensional environment parameter database is generated. Various ocean fishery resource investigation means are fused, an advanced artificial intelligence method is applied, three-dimensional multi-dimensional dynamic monitoring of the ocean swimming animals is achieved, on one hand, the number composition and space-time distribution of the ocean swimming animals, especially the vertical distribution characteristics can be monitored, the population dynamics of the ocean swimming animals and the relation between the population dynamics and environmental factors can be revealed, and on the other hand, the population dynamics of the ocean swimming animals can be monitored. By monitoring the swimming animals, basic data can be provided for population resource evaluation, and the method serves formulation of fishing quota of ocean economic swimming animals, delimitation of ocean protection areas and the like.

The invention discloses a net trap fishing device, which is characterized in that a net trap assembly is provided with a fish luring assembly used for luring fishes to enter a trapping space and a visiting assembly used for observing the gathering situation of the fishes inside the trapping space and around the trapping space, so that a low-efficiency fishing mode of a fishing rod, a fishing line and a fishing hook is abandoned; an open net trap is used, a visual fish attracting tool is arranged to attract fish to enter a net trap channel, then the net trap channel is visually closed to trap the fish, the net trap is further lifted to guide the fish to rise to a platform face along with the net trap channel, and then a hand dip net is adopted to dip the fish. Visual fishing and efficient net trap fishing scenes are realized.

The invention relates to the field of fisheries, and in particular to a fishing vessel trawl with a quickly detachable net bag, comprising a trawl main body and a net bag, wherein the trawl main body is connected to a ship, the tail of the trawl main body is provided with an opening, and arc-shaped support rods are provided on both sides of the opening at the tail of the trawl main body, the net bag is arranged at the tail of the trawl main body, the net body of the net bag passes through the tail opening of the trawl main body and extends outward, the net mouth edge of the net bag is arranged on the arc-shaped support rods, and also comprises a separation and pulling device for pulling the net bag out of the trawl main body separately, the separation and pulling device comprises a traction rope, a closing mechanism and a locking mechanism, and the present application uses the setting that the net bag can be separated from the trawl main body separately, so that the fish in the net bag can be conveniently pulled out to the ship, and due to the setting of the closing mechanism and the locking mechanism, the net mouth of the net bag is more tightly closed when it is pulled out, thereby improving the tightness of the closing of the net bag, and ensuring that the fish school is smoothly escaped.

The invention builds on the previous inventions of one of the inventors herein and includes a group of habitats connected to online databases and programs, where data from the habitats is used to update the databases and programs about the best conditions for the creatures, plants, and possibly other lifeforms inside the habitats. The invention also includes systems for helping students and others to learn, by examining the actions and well-being of the lifeforms inside a habitat, and writing research notes about those lifeforms. The invention also includes methods and systems by which research notes about a certain species, from many students or other observers, can be examined with text analysis tools, which will locate words or phrases that are common, and other information, within the research notes. This will help to discover the optimal ranges for measured parameters like temperature and Ph for the species inside the container.

A method of controlling position of a trawl net is provided. The method may comprise: receiving, by a processor, a control input, wherein the control input comprises: (i) a selection of one of a plurality of position control modes, and (ii) a position control setpoint for the trawl net; receiving, by the processor, sensor data indicating a sensed position of the trawl net; generating, by the processor, a first trawl position control output based on the control input and the sensor data; determining, by the processor, a rate of change of bathymetry along a travel path of the trawl net; and in response to the rate of change of bathymetry meeting a threshold condition, generating a second trawl position control output by changing the one of the plurality of position control modes to another of the plurality of position control modes.

The utility model discloses a net trap fishing device, which is characterized in that a net trap assembly is provided with a fish luring assembly used for luring fishes to enter a trapping space and a viewing assembly used for observing the gathering situation of the fishes inside the trapping space and around the trapping space, so that the net trap fishing device abandons a low-efficiency fishing mode of a fishing rod, a fishing line and a fishing hook; according to the utility model, an open net trap is used, a visual fish attracting tool is arranged to attract a fish to enter a net trap channel, the net trap channel is closed visually to trap the fish, the net trap is further lifted to guide the fish to rise to a platform surface along with the net trap channel, and a hand dip net is adopted to dip the fish. Visual fishing and efficient net trap fishing scenes are realized.

A method of controlling position of a trawl net is provided. The method may comprise: receiving, by a processor, a control input, wherein the control input comprises: (i) a selection of one of a plurality of position control modes, and (ii) a position control setpoint for the trawl net; receiving, by the processor, sensor data indicating a sensed position of the trawl net; and generating, by the processor, a trawl position control output based on the control input, the sensor data and predicted trawl net position data. The predicted trawl net position data may be generated by: defining, by the processor, a plurality of parameters; receiving, by the processor, input data comprising vessel speed data, tow line payout data, and a candidate drag coefficient value for the trawl net; and determining, by the processor, a tow angle based on the plurality of parameters and the input data.

The invention discloses a graded fishing device for freshwater snails, and belongs to the technical field of snail fishing equipment. The device comprises a collecting basket, a connecting piece and a handle, the collecting basket comprises a plurality of arc-shaped elastic pieces, two end discs and a containing cavity defined by the arc-shaped elastic pieces, the two ends of each arc-shaped elastic piece are connected with the end discs through bearings respectively, and the distance between every two adjacent arc-shaped elastic pieces ranges from 10 mm to 25 mm; two ends of the connecting piece are respectively connected with the end part disc and the middle part is connected with the handle. The gap between every two adjacent arc-shaped elastic pieces directly faces the snails to press down or roll, the snails directly enter the containing cavity to be collected in a centralized mode after the gaps are opened, and the snails do not need to be frequently stooped to be picked up from the ground. In addition, adaptability can be amplified by increasing the number of the arc-shaped elastic pieces and prolonging the length of the arc-shaped elastic pieces, or a plurality of collecting baskets can be used at the same time by adding an adjusting support. The device is low in manufacturing cost, easy to assemble and low in failure rate, additional screening operation is not needed, and the working efficiency is improved.

The invention relates to the technical field of biological sampling netting gears. A stratified sampling net comprises a trawl net frame and a netting assembly, the netting assembly comprises sub-netting bodies which are sequentially arranged from top to bottom, and the lower line of the upper sub-netting body in every two adjacent sub-netting bodies is fixedly connected with the upper line of the upper sub-netting body; the trawl frame comprises a main body frame, the main body frame comprises lateral slide rails, the lateral slide rails comprise a front side slide rail and a rear side slide rail which are arranged front and back, and the rear side slide rail is longitudinally and slidably connected with the sub-netting side ropes; the netting opening and closing control mechanism comprises a sliding transverse rod, an elastic telescopic assembly and an unlocking and releasing assembly, wherein the sliding transverse rod is longitudinally connected with the front side sliding rail in a sliding manner; the upper line of the uppermost sub-netting is connected with a sliding cross rod; the lower line of the sub-netting located at the lowermost part is connected with the other sliding cross rod; and the joints of the upper lines and the lower lines of the adjacent sub-nettings are connected with the same sliding cross rod. According to the invention, the requirement of stratified sampling is met.

The utility model provides a juvenile crab catching device, and relates to the technical field of juvenile crab catching devices, the juvenile crab catching device comprises a catching net rod, a length adjusting assembly is arranged in the catching net rod, the length adjusting assembly comprises a sliding rod and a fixing block, the sliding rod is inserted in the catching net rod, and the fixing block is arranged on the sliding rod. The two fixing blocks are connected to the outer surface of one side of the fishing net rod. According to the fishing net rod, when the length of the fishing net rod needs to be adjusted, the handle can be grasped and pulled backwards, one end of the inserting rod is pulled out of the inserting hole in the current position, the sliding rod can be adjusted at the moment, and therefore the length of the fishing net rod is adjusted; the inserting rod is inserted into the inserting hole in the current position through the spring to be fixed, so that the length of the fishing net rod is adjusted, and the problem that the length of an existing fishing net rod cannot be adjusted, so that fishing net rods with different lengths need to be used when fishing is carried out in different environments is solved.

The invention relates to the technical field of aquaculture, in particular to a control method, system and equipment of a pond trawl fishing device and a medium. The method comprises the following steps: determining whether to trigger a highest priority interrupt signal by adopting a threshold judgment method based on an actually measured tension value obtained in real time; when the highest priority interrupt signal is not triggered, position information of a pond obstacle and a net floating line is identified and obtained based on image data, obtained in real time, of the far end of the trawl, the collision risk is pre-judged, and whether a dynamic obstacle avoidance strategy is executed or not is determined based on the pre-judgment result; the actual trawl speed and the actual driving tension are calculated based on trawl power data obtained in real time, and the optimized trawl speed is determined by adopting a fuzzy control strategy and executed. By designing feedback control logic of dynamic resistance in the trawl process, the adaptability to complex pond fishing working conditions is improved, and dynamic balance of equipment safety and fishing efficiency and intelligent upgrading of pond trawl fishing operation are achieved.

The utility model discloses a fish fry catching and screening device, relates to the technical field of fish fry catching, solves the problems that an existing device is poor in catching effect and inconvenient to sort, and adopts the following scheme that a rotating shaft is assembled on the top face of a supporting column. The electric telescopic rod can drive the fishing net to move forwards so as to adjust the distance from the fishing net to the shoreside, and the rotating shaft can drive the fishing net to rotate, so that the water entering place of the fishing net can be adjusted in a large range, and the fishing effect is improved; the fishing net is driven by the rotating shaft to rotate to the position above the screening box, then the position of the fishing net is adjusted through the electric telescopic rod, and therefore fish fries on the fishing net can be poured into the screening box conveniently, screening can be conducted on the shore, and the fish fry sorting efficiency and effect can be improved through the screening drawer.

A salmon net picking tool on a retractable spool. Salmon fishers use something called a net picking tool to pull fish that get caught in the netting. This fishing net picking tool is important to keep close by at all times when pulling fish out of the ocean. However, it is also very important for fishermen to keep their hands free as the ship sways. The salmon net picking tool on a retractable spool helps resolve both issues.

To provide underwater cleaning equipment enabling reduction of work load of cleaning of a cleaning target.SOLUTION: Underwater cleaning equipment according to the embodiment comprises: a housing which includes a target facing surface facing a cleaning target during cleaning; a first thruster provided in the housing and generating thrust in a normal line direction of the target facing surface; a cleaning brush rotatably provided in the housing and cleaning the cleaning target; four wheels rotatably provided in the housing; and a travel driving portion which drives the wheels and causes the underwater cleaning equipment to travel. Each of the wheels includes a plurality of projections which can be inserted in a hole of the cleaning target provided in the outer peripheral surface of the wheels.SELECTED DRAWING: Figure 2

The invention provides an intelligent retracting, releasing and self-cleaning system and method for an euphausia superba fishing truss. The system comprises a truss structure, a recognition module, a cleaning module, a monitoring module and a control module. The truss structure can be connected to the ship end in a multi-direction retractable mode and is used for pulling an underwater net. The identification module is mounted at the front end part of the truss structure and is used for identifying obstacles; the monitoring module is used for monitoring the winding and unwinding length of an operation rope of the truss structure; the cleaning module, the recognition module and the monitoring module are electrically connected with the control module; the control module is used for controlling accurate positioning of the truss structure according to monitoring information of the monitoring module and controlling folding and unfolding actions of the truss structure and cleaning actions of the cleaning module according to identification information of the identification module. The system can monitor the folding and unfolding state of the truss in real time and quickly feed back when encountering a foreign matter, so that measures can be taken in time; and a self-cleaning mechanism is also integrated, so that the foreign matter attachment and blockage risks are reduced, and the reliability and durability of the system are improved.

The utility model relates to the technical field of marine benthic organism survey, and discloses a special quantitative survey trawl device for acaudina molpadioides, which comprises a gravity comb-shaped plough and an intercepting net, the intercepting net is connected to the gravity comb-shaped plough, the gravity comb-shaped plough comprises two side baffles which are symmetrically arranged, a gravity shovel plate is welded between the lower ends of the two side baffles, and the gravity shovel plate is connected with the intercepting net. A tension rod is welded between the upper portions of the two side baffles, a fixing rod is welded between the middles of the two side baffles, and three sets of triangular supports are evenly welded between the tension rod and the gravity shovel plate. The problem that the original quantitative survey device for the marine large benthonic animals is not suitable for the acaudina molpadioides due to the limitation of the sampling area and the sampling depth is effectively solved; meanwhile, the trawl mode reduces the randomness error of quantitative survey, improves the survey data acquisition efficiency, and enables the survey statistical data to be more reliable and accurate.

The invention relates to the field of euphausia superba fishing boat design and manufacture, in particular to an euphausia superba boat truss automatic folding and unfolding system which comprises a truss, a driving device, a hydraulic system and an intelligent control system. Rapid unfolding and retracting of the truss are achieved through equipment such as the rotary truss, the thrust oil cylinder and the steel wire rope winch, flexible operation of a ship under the complex sea condition is facilitated, and the fishing efficiency is improved; the automation degree is high, the difficulty and complexity of manual operation are reduced, and the long-term operation cost is reduced. The intelligent control system can monitor the environment condition and the state of the truss in real time, it is guaranteed that unfolding or retracting operation is not executed under the unsuitable condition, and therefore safe operation of equipment and safety of personnel are guaranteed.

To provide a bottom trawl system which operates by fixing a small number of floats to a towing rope, releasing the rope with the float from a fishing boat and tying it to the net, making it slightly longer than a straight line, and the angle of elevation between the vector direction, the horizontal line and the rope diagonally upward forward is preferably between about 65 degrees and about 85 degrees, measuring the tension with a constant load torque meter on the side of the fishing boat, keeping the longitudinal force below a certain level, reeling it in and shrinking it, sinking the float, and raising the net opening of the bottom trawl to prevent the net bottom from separating from the seabed; the towing rope being automatically driven by a motor and a driver; to deal with the case of entering a deep fishing ground by letting out from the ram and reducing the tension; regarding the processing of the net, an additional lowering operation being performed when the eaves net connected in front of the head rope is hauled up; by summarizing these technologies, to make it possible to prevent fishes from escaping from the net mouth and automatically release the towing rope when the water depth increases; conversely, when the water depth becomes shallower, to make it possible to provide a bottom trawl fishing gear that retracts and adjusts the rope, lowering the float attached to the towing rope and raising the net mouth, so that the net mouth does not separate from the seabed.SELECTED DRAWING: Figure 1

The utility model relates to a wind-fishing fusion supporting foundation, a wind generating set and a wind-fishing system, the wind-fishing fusion supporting foundation comprises a support body, the whole support body is a hollow frame, the support body is provided with a first end and a second end in the height direction of the support body, the first end is used for supporting a tower, and the second end is used for being connected with a seabed; the protective net is arranged on the support body and connected with the support body, a fish cabin is defined by the protective net and the support body, and a plurality of one-way fish inlets communicated with the fish cabin are formed in the protective net; the fish luring device is arranged in the fish cabin. According to the wind-fish fusion supporting foundation, the wind generating set and the wind-fish system, combination of offshore wind power and a marine ranch is facilitated.

The invention is suitable for the technical field of freshwater aquaculture, and provides a freshwater aquaculture fishing device which comprises supporting seats installed on the two sides of an embankment of a pond, a pair of supporting seats on the left side and the right side of the embankment are grouped, a belt wheel is fixed to each supporting seat through a bolt, and the belt wheels on the group of supporting seats are in transmission connection through an installation rubber belt. The belt wheel is driven by a trawl driving mechanism, a clamping block is machined on the inner side of the rubber belt, a clamping groove is machined in the belt wheel, and the clamping block is detachably clamped in the clamping groove; a plurality of mounting rings are machined on the outer surface of the rubber belt, and a trawl mechanism is hung between the two parallel supporting seats. The problems that traditional freshwater aquaculture is low in fishing efficiency and poor in automation degree, meanwhile, large-area coverage cannot be achieved for a large-area pond, the placement position of the net cage is fixed, and to-be-harvested fish in the pond is difficult to capture at a time can be solved.

A harvesting mechanism for a fishing device includes an actuator, a wireless receiver for receiving a wireless signal to control the actuator, and a rope securing mechanism mechanically coupled to the actuator. The rope securing mechanism secures a rope. In response to receiving the wireless signal, the wireless receiver activates the actuator to cause the rope securing mechanism to release the rope.

The present invention discloses an integrated system for intelligent ecological fish farming and fishing and fishery resource restoration in oceans and lakes, comprising: a supporting pontoon, used to float on the water surface to form a fishing area in a predetermined water area; a peripheral net, connected to the supporting pontoon to form a temporary fishing and breeding area in the fishing area, the peripheral net is densely covered with meshes of predetermined apertures, so that fish below a predetermined size can pass freely, and fish above a predetermined size can be restricted in the peripheral net, and the peripheral net is provided with a plurality of fish entry channels; a plurality of fish collecting boxes arranged around the peripheral net, the fish collecting boxes are semi-floating or suspended in the water, and are detachably connected with a fish attracting channel extending into the temporary fishing and breeding area, and the fish attracting channel is provided for one-way entry of fish above a predetermined size. The present invention can achieve the purpose of catching large fish and releasing small fish, greatly reducing the capture of small fish and fry, thereby reducing the damage to fishery resources, and is conducive to the restoration of fishery resources.

The invention relates to the technical field of aquatic product fishing tools, in particular to an automatic lifting intelligent shrimp catching cage which comprises an equipment body, an upper computer and a lower computer. The equipment body comprises a shrimp catching cage, a floating ring and an equipment box, a plurality of shrimp inlets are formed in the front side and the rear side of the shrimp catching cage, the left side is rotationally connected with a shrimp outlet door, a pneumatic rod is installed at the top end, the output end of the pneumatic rod is connected with the shrimp outlet door through a connecting rod, and two air pipes b are arranged on the outer side; according to the scheme, the air bag, the pneumatic rod and the related air pipe are arranged in the shrimp catching cage, and equipment such as the air pump and the air distributor is combined, so that automatic lifting of the shrimp catching cage and automatic opening and closing of the shrimp outlet door are achieved; when the cage is placed, the air bag is free of air, and the shrimp catching cage sinks by gravity; when the cage is collected, the air pump conveys air to enable the air bag to expand to drive the shrimp catching cage to float upwards, and then the air channel is controlled to enable the pneumatic rod to open the shrimp outlet door to take shrimps. Therefore, the manual operation links are greatly reduced, the labor intensity is reduced, and the shrimp catching efficiency is improved.

A segment for use in a trawl system having a cable and a longitudinal axis. The segment has a segment body and at least one passage extending from an inner side to an outer side of the body for receiving the cable of the trawl system. The segment body is hydrodynamically shaped such that the segment is urged away from the longitudinal axis when the segment is pulled through water by the cable. A trawl net system is also disclosed.

The invention relates to a fishery fishing system with daily output of 600 tons, which comprises a zero-buoyancy hollow hose, a netting gear module, a pumping module, a power module and a control module, and is characterized in that the zero-buoyancy hollow hose is mounted on the netting gear module, and the netting gear module comprises a net opening, a net body and a net bag; the control module is in control connection with the power module and the pumping module, the power module is connected with the pumping module, the power module is used for providing power for the pumping module, and the control module is used for adjusting various parameters of the pumping module; one end of the zero-buoyancy hollow hose is connected with a pump suction module on the ship, the other end of the zero-buoyancy hollow hose penetrates through the net body and extends into a net bag at the tail end of the net body, a closed channel connected to the ship from the tail end of the net bag is established, and fish and shrimp catches are conveyed into a catches collecting cabin on the ship from the net bag at the tail end of the net body through suction force generated by the pump suction module. The fishing efficiency of the continuous pumping fishing system can be effectively ensured and improved.