59results about How to "Increase catch" patented technology

The invention discloses a microcomputer control system of an automatic squid jigging machine. The system comprises a paying-off procedure sub-control system, a luring and jigging procedure sub-control system, a taking-up procedure sub-control system and a finishing procedure sub-control system. The system cooperates with functions, such as an intelligent weighing function, a winding force limiting function, wave compensation and the like, of the automatic squid jigging machine, so that a process of manual squid jigging can be imitated, and the intellectualization and the automation of the squid jigging machine are realized. In addition, by the aid of a communication function of an intelligent module, networked centralized control can be performed on a plurality of jigging machines, so that the labor cost is greatly reduced, and the catch is increased.

The underwater lighted fishing lure utilizes a two-color lighted system (blue, green, blue-green, white) which either blinks two LEDs ON and OFF (cyclically or randomly) or includes laterally extending fins causing the underwater lighted fishing lure to spin or rotate due to current flows thereby flashing colors from a certain perspective underwater. Light emitting devices (LEDs) maybe driven with excess voltage or current (above 3.5 volts) by 2, 3 or 4 lithium batteries or 3 or 4 alkaline batteries. To modify the beam of light from the LEDs, light modifiers, light diffraction gratings and light reflection surfaces disperse the light laterally away from the elongated housing. Chemical lights of different colors with laterally extending fins are spaced apart to facilitate breakage and activation of chemical capsules. A clip system with a double spring action includes a U-shaped clip at an end of an O-shaped body.

The underwater lighted fishing lure includes, in one embodiment, a transparent housing, two or more batteries and two LEDs of different color. Studies have shown that the use of two color LEDs in a single lure greatly enhances fish catch. Another embodiment drives the LEDs with a voltage at or above 3.3 volts. An additional embodiment uses lithium batteries. A further embodiment drives the LEDs at or above 150% the recommended voltage or current. Studies have shown that driving LEDs at higher voltages significantly increases fish catch. Additional features include a blinking circuit for the two color LEDs and a planar wing to either the battery powered fishing lure or a chemical luminescent fishing lure which causes the lure to turn based upon underwater flows and currents. This turning simulates a color ON and OFF cyclic operation.

The invention discloses a coloring method of nylon-6 by using a liquid coloring technology, relating to the production of fishery drift net materials. The method is characterized in that: a fusion vessel, a filter, a polymerization vessel, a cooling water tank, and a slicing machine are adopted in the method; phthalo blue and yellow are selected to prepare a coloring agent, the coloring agent is grinded into fine particles having a particle size of less than 1-2 mu; the coloring agent is added after caprolactam is dissolved and before polymerization, and the weight ratio of caprolactam to the coloring agent is 50:1; a hydrolytic polymerization of caprolactam comprises three stages: stage 1, a hydrolytic ring opening reaction of caprolactam is carried out, the coloring agent and caprolactam are heated up to 250 DEG C, the pressure is increased to 2-7 kg, and the time is 180 min; and stage 2, a step-growth ring opening addition polymerization of caprolactam is carried out, a pressure of more than 7 kg is maintained, and the time is 90 min; and stage 3, a condensation polymerization of caprolactam is carried out, after high temperature and high pressure reaction, moisture of materials are pumped out by vacuum pumping. According to the invention, coloring effect is achieved, and simultaneously the spinning requirement is satisfied.

The invention relates to a method for preparing a shell square reef, which comprises the following steps of: (a) constructing the base, support column and beam structures of the shell square reef by selecting reinforcing steel bars with appropriate sizes; (b) pouring concrete towards the constructed steel structure of the shell square reef; (c) when the shell square reef is poured to be formed and the concrete on the surface of the shell square reef is not dried, inserting shells into the surfaces of the support columns and the beam; and (d) drying the concrete completely for forming to obtain the shell square reef which can be used. The invention also provides the shell square reef. The method has the advantages that: the shell square reef is manufactured by using reinforced concrete as a raw material, is provided with the base, and is high in stability and capacity of impact resistance, drifting resistance and overturn resistance; the shell square reef can generate shadows, adsorb algae and shellfish and attract fish to spawn or avoid stormy waves and natural enemies and provide excellent habitats for the fish to fulfill the aims of protection, proliferation and the improvement of fish catch.

The table tennis ball serving robot simulates the serving action of table tennis player. It has one ball throwing mechanism simulating the action of the player's left hand, and one ball driving mechanism simulating the action of the right hand, and one swing mechanism for altering the ball serving direction. During serving ball, the ball is first thrown with the ball throwing mechanism and then driven with the ball driving mechanism while the swing mechanism may be operated to alter the ball serving direction. The present invention is novel, interesting and suitable for trainee of different levels to raise table tennis playing level.

A remote control fishing boat with an automatic bait throwing device of the present invention is mainly used for fishing. It can fish easily and happily, and can automatically throw bait; ; Its working principle is: first adjust the drift, then hang the bait on the hook, the fisherman holds the remote control to drive the fishing boat to the predetermined position, and the remote control commands the pay-off wheel to lower the hook to the predetermined depth, and then the fish can be fished. The reel lowers the anchor drop to the bottom of the water to anchor the fishing boat; when the fish bites the hook, the angler presses the button on the remote control to instruct the pay-off reel to take up the line, catch the fish, and then pull the mooring rope to pull the fishing boat back When you go to the shore, during the fishing process, the spherical camera of the video system will take real-time pictures of the fish biting the hook. If you need to make a nest or mend the fishing spot, you can put it in the bait hopper of the automatic bait throwing device. The nest material, the electromagnet door of the remote control automatic bait throwing device, can make nests or mend nests for fishing spots.

Provided is a cleaning sheet which excellently captures dust and dirt. The cleaning sheet is composed of a base material sheet (2), and a cleaning surface forming sheet (3) bonded to the base material sheet (2). A slacked section (5) of the cleaning surface forming sheet (2) is formed between the bonding sections (6, 6) where the base material sheet (2) and the cleaning surface forming sheet (3) are bonded to each other, and many cuts (7) for capturing dust and dirt are formed on the slacked section (5).

The invention relates to a brush-type hydrazine-polymer functionalized magnetic nano-material, preparation and application thereof to enriching of glycopeptide or glycoprotein. After a reversible addition-fragmentation chain transfer (RAFT) reagent is introduced into the surface of a nano-material, an organic polymerization reaction functional monomer and an organic polymerization reaction initiator are added, the organic functional monomer is subjected to controllable free-radical polymerization under the regulation and control of the reversible addition-fragmentation chain transfer reagent, so that the brush-type polymer organic-inorganic hybrid nano-material is prepared. The organic-inorganic hybrid nano-material is simple in preparation process and mild in reaction conditions, and is applicable to enriching of glycopeptide or glycoprotein in a complex biological sample.

The invention relates to a visualization fishing pole. The visualization fishing pole comprises a pole body and a fishing line, wherein the fishing line is connected with a fishing hook, a bottom weight and a buoy, the fishing line is connected with a camera, and two ends of a camera holder are fixed on the fishing line by utilizing space beans; a battery pack is installed in the bottom weight; a circuit board and an antenna are installed inn a closed inner cavity of the buoy, and two ends of the buoy holder are fixed on the fishing line by utilizing the space beans; the battery pack is electrically connected with the camera and the circuit board, and the camera is connected with the circuit board through a signal; a signal receiving module, a signal amplification module and a wifi (wireless fidelity) transmitting module are installed in the circuit board, the wifi transmitting module is connected with the antenna, and the antenna transmits a wifi signal to a carried smart phone or a tablet computer to establish communication connection.

The invention discloses an automatic volleyball serving device for sports training, relates to the technical field of sports training equipment, and mainly aims to solve the problem that an existing volleyball serving device is relatively troublesome because a volleyball is manually placed at a volleyball throwing position and then is served. The automatic volleyball serving device comprises a supporting rod part, a base foundation plate and a placing groove body; a mounting transverse plate is fixed to the top end of the supporting rod part; the placing groove body is fixed to the upper portion of the mounting transverse plate; a volleyball guide channel with a port extending to the lower side of the mounting transverse plate and facing in the horizontal direction is formed in the bottomwall of the placing groove body; a volleyball supporting plate is arranged at the port of the ball guide channel; an electric driven shifting and throwing mechanism capable of throwing the volleyballintermittently is arranged at the lower end part of the mounting transverse plate; a pressure sensor is arranged on the volleyball supporting plate; and a vibration inductor is arranged on the electric driven shifting and throwing mechanism. The automatic volleyball serving device has the advantages that the structure is simple; athletes can be trained by intermittently and automatically serving volleyballs; manual operation is not needed; convenience and rapidness are achieved; the training effect is effectively improved; and the practicability is relatively high.

The invention discloses a fishing tool. The fishing tool comprises a shell, a fish mouth positioning net cover, detection heads, an ejection rod, a fish hook and an ejection rod launching device. The fish mouth positioning net cover is arranged at one end of the shell, and the detection heads are arranged inside the fish mouth positioning net cover; the fish hook is arranged at one end of the ejection rod, and the other end of the ejection rod is installed on the ejection rod launching device inside the shell; the ejection rod launching device controls the ejection rod to be ejected out of the shell to the fish mouth positioning net cover in a driving mode, and the detection heads are electrically connected with the ejection rod launching device through control circuits. In the fishing process, the fish hook can be automatically popped into a fish mouth; through the technology, a fisher can fish more fishes and enjoy higher pleasure in the fishing process.

The invention provides a combined type light emitting diode (LED) above-water fish lamp. The fish lamp is characterized by comprising three lamp panels which are in head-to-tail connection; and one side surface of each lamp panel is provided with LED lamp pieces, and a certain included angle of 120 to 160 degrees is formed between two adjacent lamp panels. Besides the advantages of the LED lamp, more importantly, the LED above-water fish lamp provided by the invention solves the problems of poor heat dissipation performance and poor light color of the high-power LED fish lamps; and the fish lamp also solves the problems that because a fish boat swings, the light intensity in the catching region keeps changing, so that the service life of the LED fish lamp can be prolonged, the catching range of fishes is widened, and a fish-catching effect is stable.

The invention provides a harmless treatment method of cyanide-containing tailings, and belongs to the field of mine waste residue treatment. The harmless treatment method of the cyanide-containing tailings comprises the following steps that immobilization treatment is carried out on the cyanide-containing tailings through pretreatment, wheel grinding mixing and digestion steps; a consolidating agent and a cementing material are added into the cyanide-containing tailings after immobilization treatment to consolidate and prepare harmless filling materials; the harmless filling materials are cured, and the materials are piled into a tailing pond; and according to the pretreatment, multifunctional water-soluble polymer is added to the cyanide-containing tailings, and the mixture is sent into aconcentration tank, stir and filter pressing are carried out to obtain concentrated ore pulp. According to the harmless treatment method of the cyanide-containing tailings, the cyanide-containing tailings are used for preparing the filling materials which are not compatibilized, do not greatly shrink, have excellent compressive strength, do not have cyanide toxicity, and have good freezing-thawing resistance and heat resistance. The treatment method has mature process, high settling rate, large cyanide capture amount, cost saving, construction in all seasons, less reagent consumption, large treatment amount, continuous treatment, low energy consumption, and can realize sustainable development of economy, society and environment.

Provided is a large lake surface set net. A maze net is connected with the lower portion of a guide net shaped like a Chinese character 'ba', three beard nets shaped like an inverted Chinese character 'ba' are arranged below the maze net, and a circular beard net is arranged at the outlet of the last beard net shaped like the inverted Chinese character 'ba'; the outlet of the circular beard net is communicated with a fish collecting box body, and a movable partition net A is arranged between the circular beard net and the fish collecting box body; a silver carp sorting box body is connected with the lower portion of the fish collecting box body, and a movable partition net B is arranged between the fish collecting box body and the silver carp sorting box body. The large lake surface set net solves the problems that when net fishing is achieved by lots of labor, labor intensity is high, fishing efficiency is low and fresh and alive fish can not be fished all year round, belongs to a driven type fishing tool, saves lots of labor, and is large in fishing scale, high in fish catch, fresh in catch and good in quality. Fish is fished and sold all year round and appears on the market in a balanced mode.

The invention relates to a water electrolyzing type artificial fish reef. The water electrolyzing type artificial fish reef is composed of a reef body, an electrolyzer and a floating device and can provide a necessary and safe habitat for gathering, foraging, breeding, growing and hiding of aquatic organisms such as fishes and further can generate an ascending flow which can change the distribution of a flow field in a sea area to drive exchange of bottom nutritive salt substances and an upper water body to provide nutrients for proliferation and growth of plankton in the upper water body and promote the breeding ability of planktons so as to form an excellent bait field. The bait field attracts migratory fishes to be gathered and detained to realize a better fish gathering effect, and meanwhile, a current generated by a solar power generation device can electrolyze desalted seawater. The electrolyzed oxygen can increase the oxygen content of seawater around the fish reef to create a good habitat for aquatic organisms such as shells and trepangs. The electrolyzed hydrogen is collected in a gas collecting box, so that a clean energy source can be provided, thereby greatly improving the primary productivity in the surrounding sea areas.

The invention discloses a remote control fishing boat applied to fish mainly. A fishhook is delivered to an exact fishing place through the remote control fishing boat, thus the fishing is easy and pleasant. The remote control fishing boat is mainly composed of an annular air sac, a circular waterproof cabin, a paying-off wheel, a screw propeller motor, a rudder, a propeller, a buoy, a fishhook, aline ring, a guide pulley, and a pulley supporting rod. The working principle is that the buoy is adjusted firstly, weight of a small lead weight is increased or reduced, thus the buoyancy force of the buoy is equal to the weight sum of the lead weight and the fishhook; a bait is hooked at the fishhook, a fishermen holds a remote controller to drive the fishing boat to a preset position, and remotely controls and orders the paying-off wheel to drop the fishhook to a predetermined depth, thus the fishermen can fish; when a fish bites the hook, the fishermen can start the button of the remote controller and instructs the paying-off wheel to wind up, lift up the fishhook and then drive the fishing boat to the shoreside; the fishermen can remotely control the paying-off wheel to unwind or wind up according to the discipline that different fishes swim in different water depths, thus the fishhook is placed at the water layer where the fish swims, and the fishery harvesting is increased.

The invention discloses a solar cell which comprises a photovoltaic conversion structure, a first electricity conduction structure and a second electricity conduction structure. The photovoltaic conversion structure is provided with a light inlet face and a back face opposite to the light inlet face. The first electricity conduction structure is arranged on the light inlet face of the photovoltaic conversion structure and electrically connected with the photovoltaic conversion structure. The first electricity conduction structure comprises a first transparent electricity conduction layer, an electrode structure and a second transparent electricity conduction layer. The first transparent electricity conduction layer is arranged on the light inlet face of the photovoltaic conversion structure. At least part of the first transparent electricity conduction layer is arranged between the electrode structure and the light inlet face of the photovoltaic conversion structure. The second transparent electricity conduction layer covers the electrode structure and the first transparent electricity conduction layer. The second electricity conduction structure is arranged on the back face of the photovoltaic conversion structure.

The invention discloses a broad-spectrum functional fish bait and a preparation method thereof. The fish bait is prepared from, by weight, 20-30 parts of wheat germ, 15-20 parts of potato flakes, 10-20 parts of dried small shrimps, 2-6 parts of soybeans, 5-7 parts of red granules, 2-6 parts of soybean dietary fibers, 0.05-0.1 part of sodium cyclamate, 0.2-0.6 part of fennels, 1-4 parts of silkwormchrysalis, 0.02-0.06 part of B+G, 0.02-0.06 part of ethyl maltol, 10-15 parts of fermented powder, 3-5 parts of plant fiber, 0.5-0.8 part of fresh milk extract and 15-22 parts of vital gluten powder.The fish bait is reasonable in formula design, can be soft and elastic in state, lasting in state and non-useless after repeated bait beating and rubbing by adding the soybean dietary fibers, has theadvantages that the integral compactness and viscosity and the hook-attaching property of the fish bait are greatly improved and the fish bait is non-sticky by adding and applying a suitable amount of plant fibers, has a fine and smooth material body, enhanced palatability and enhanced mouthfeel, integrates luring and fishing, can be used in the form of single package, and can be rubbed or pulledand is simple in operation; the activity and appetite of the fish are improved, and fish catch is increased.

The invention discloses multi-mixing processing equipment for fishing bait. The multi-mixing processing equipment comprises a lower shell, an upper shell covers the upper end of the lower shell, and ahorizontal partition plate is fixedly connected with the interior of the upper shell; a motor base is fixedly connected with the left side of the upper portion of the horizontal partition plate, a motor is fixedly connected with the lower end of the motor base, a horizontal rotation shaft is fixedly connected with an output end of the motor, and a first drive bevel gear is fixedly connected withthe left side of the horizontal rotation shaft; a first rotation shaft is fixedly connected with the middle of the horizontal partition plate, a first driven bevel gear is fixedly connected with the top of the first rotation shaft and is meshed with the first drive bevel gear, and multiple spiral stirring blades are fixedly connected with the outer side of the lower end of the first rotation shaft. Compared with the prior art, the multi-mixing processing equipment has the advantages that the multi-mixing processing equipment is simple in structure and convenient to use, and can stir raw materials more sufficiently during usage and make the raw materials mixed more sufficiently, the alluring effect of the bait is better, then fish harvest is improved, and thus the multi-mixing processing equipment for fishing bait is worthy of being popularized.

A nutrition material for improving the growth of waterweeds in a fish pond is prepared from, by weight, 28-36 parts of decomposed organic fertilizers, 4-10 parts of nuisance-free auxin, 2.5-5 parts of chemical fertilizers and 1-2 parts of modified plant powder. A preparation method of the nutrition material comprises the following steps: grinding all raw materials, sieving the ground raw materials by a 8mm sieve, and mixing sieved raw materials. The nutrition material can improve growth of the waterweeds in the fish pond to make stems and leaves of the waterweeds be tender and be very suitable for fish to eat in order to reduce the use amount of artificial fees, also can avoid crazy growth of the waterweeds, facilities regulation of the water quality, can increase fishery harvesting, and makes fish flesh be delicious.

The invention discloses a bait material prepared by utilizing microbial fermentation to replace essence and a preparation method thereof. The bait material comprises, by weight, 2.8-3.8 parts of water, 3-5 parts of corn, 0.1-0.3 part of white sugar, 1.2-1.8 parts of bean pulp, 1.2-1.8 parts of rapeseed cakes, 0.5-0.9 part of wheat bran, 0.03-0.08 part of bacillus subtilis, 0.03-0.08 part of lacticacid bacteria and 0.03-0.08 part of saccharomycetes. Soft, strong and mellow fragrance generated by microorganism fermentation replaces artificially synthesized essence for fish luring, no irrigationis generated, efficient fish luring can be realized, lasting fish retaining is achieved, and the material is natural and environmentally friendly; meanwhile, organic pollutants in water can be decomposed so that the effect of purifying the water can be achieved.

The invention relates to an artificial fish reef achieving wave energy power generation. The artificial fish reef is composed of a reef body, a power generation device and a transmission device. The artificial fish reef can provide a necessary and safe rest place for gathering, foraging, breeding, growing and enemy avoiding of aquatic organisms such as fishes, can generate upwelling to promote circulation of nutrient salts in the seabed and enhance the breeding capability of plankton to form an excellent bait field so as to attract gathering and retention of migratory fishes, and also can achieve environment-friendly power generation through wave energy. An LED lamp connected with the artificial fish reef can form a light environment to achieve a certain biological effect on attracting the fishes, and then the purposes of protecting and increasing fishery resources and increasing the fish catch are achieved.

The invention discloses a remote-control fishing boat which can be anchored with a water bottom. The boat is mainly used for fishing, the remote-control fishing boat is used to send a fishing hook toan accurate fishing place, and fishing is relaxed and happy; the boat mainly includes a circular gas bag, a circular waterproof cabin, a thread unwinding wheel, a float, the fishing hook, a thread ring, a guide pulley, a mooring ring, a mooring rope, an anchor sinker, and an anchoring wheel; and the working principle is as follows: firstly the float is adjusted, the weight of a lead sinker is increased or decreased to make the buoyancy of the float is equal to a sum of the weight of the lead sinker and that of the fishing hook, then a fishing lure is hung on the fishing hook, a fisherman holdsa remote controller to drive the fishing boat to a predetermined position, and the remote controller commands the thread unwinding wheel to descend the fishing hook to a predetermined depth, so thatfishing can be performed, if stormy waves are met, the anchoring wheel descends the anchor sinker to the water bottom for anchoring the fishing boat; and when a fish bites the hook, the fisherman presses a button of the remote controller to command the thread unwinding wheel to wind a thread to catch the fish, and then the mooring rope is pulled to pull the fishing boat back to a shore edge.

The invention relates to a visible hoisting type fishing net. When the hoisting type fishing net manufactured by the technical scheme is used for fishing, baits are firstly put into a small bait cage;then pin rings on an elastic latex band are pinned into pin holes of a floating ring trough pins respectively, so that an upper net ring falls onto a lower net ring; then the hoisting type fishing net is hoisted through a hoisting frame and then is put into water; when fishes in the water bite the small bait cage, a bait cage floating thread floats up and down and swings, and an underwater camerasends a signal to a mobile phone of a fisher through a floating antenna; the fisher can see the sizes and quantity of the fishes in the net from the own mobile phone, so as to determine whether the net needs to be hauled or not; when the fisher determines to haul the net, a pin thread is pulled firstly and then the pins are pulled out from the pin holes; the lower end of a hoisting rope is rapidly pulled up through the elastic latex band and the upper net ring is pulled to the floating ring instantly, so that the net forms a net barrel shape; the fishes in a net barrel cannot escape, so thatthe fish catch can be improved by the net; meanwhile, the hoisting frame is pulled to hoist the hoisting type fishing net onto the shore and the fishes in the net can be taken out.

The invention discloses a handheld insect catcher. The handheld insect catcher is characterized by comprising a housing, wherein a handle is manufactured at the lower part of the housing; a switch button is arranged in the handle; a motor and a vacuum pump are arranged in the housing; the motor is connected with a power supply through a power line; the power of the motor is 0.2Kkw-0.5kw; a dust removal chamber is arranged at the front side of the housing; a filter is arranged in the dust removal chamber; a dust storage tank is arranged at the lower part of the dust removal chamber; an exhaust inlet is formed in the housing at the front side of the dust removal chamber and communicates with the dust removal chamber; the exhaust inlet is connected with a suction pipe joint; the suction pipe joint is connected with a suction pipe and the other end of the suction pipe is connected with a catching tank; a soft gauze sleeves the outer wall of the head, in the catching tank, of the suction pipe; and the catching tank is connected with one end of a catching suction pipe and a suction port for sucking insects on flowers and trees is arranged in the other end of the catching suction pipe.

The invention discloses an air filtering system. The air filtering system comprises a draught fan set, a ventilating pipe, filtering units and air returning openings, wherein the draught fan set is arranged outside a to-be-filtered chamber, the filtering units are installed to the upper portion in the to-be-filtered chamber, interlayers are arranged between the filtering units and the roof of theto-be-filtered chamber, the draught fan set is communicated with the ventilating pipe, the ventilating pipe is communicated with the interlayers, and the air returning openings formed in the two sidesin the to-be-filtered chamber are communicated with the interlayers. According to the air filtering system, smooth exchange of gas can be achieved, the air quality in the to-be-filtered chamber is improved accordingly, air flowability is improved, and the air filtering system has integrated consistency, and is good in sealing performance, high in capturing force and large in dust holding capacity, and the asepsis to-be-filtered chamber can be achieved.

The invention relates to corollary equipment for treating oily sewage by using magnetic Janus nanoparticles for oil field and oil refining industries, in particular to a skid-mounted oily sewage treatment device and method. A sewage storage tank and a magnetic Janus particle storage tank are connected with the inlet end of a high-speed shearing machine through connecting pipes, and the outlet end of the high-speed shearing machine is connected with an oil stain adsorption treatment system through a water outlet pump. Oil-free sewage obtained after oil stain separation by the oil stain adsorption treatment system enters a water storage tank, the water storage tank discharges the sewage through a drainage pump, other impurities in the discharged sewage are filtered through a filter, and then water without oil stain is discharged. After the oily sewage is treated by the magnetic Janus particles, the oil content can be reduced to 5 ppm or below, the content of various volatile substances and impurities in water is greatly reduced, the oil reservoir geological structure and deep water resources can be effectively protected, and continuous and safe exploitation of an oil and gas field is achieved.

The invention provides a remote controlled fishing boat with a GPS. The fishing boat is mainly used for fishing. The GPS is used for guiding the fishing boat to reach a preset fishing place, and the fishing is easy and pleasant. The GPS mainly comprises a GPS positioning instrument, a display screen and an embedded microprocessor. The working principles of the fishing boat are as follows that after the fishing boat reaches the preset fishing point, the GPS positioning instrument reads the coordinate of the position and transmits the coordinate to the microprocessor of the GPS, and the coordinate is displayed on the display screen as a fixed-point coordinate; and when the fishing boat needs to return to the preset fishing point again, a fisherman remotely controls the fishing boat to move towards the preset fishing point, meanwhile, the moving GPS positioning instrument continuously sends out moving coordinate signals, the moving coordinate signals are displayed on the display screen ascoordinates of moving points, the fisherman observes the relative positions of the coordinates of the moving points and the fixed-point coordinate on the display screen and remotely controls the fishing boat to enable the coordinates of the moving points to coincide with the fixed-point coordinate on the display screen, and thus the position of the fishing boat is the preset fishing point.