8 results about "Aquaculture engineering" patented technology

The invention discloses a recirculating water breeding system for simulating natural ocean current and a production promoting method, and belongs to the technical field of aquaculture engineering. The invention discloses a circulating water breeding system and a production promoting method for simulating natural ocean current. The system comprises a culture pond body structure, a bionic water flow stimulation subsystem, a circulating water treatment subsystem and an intelligent control subsystem, the method comprises the following steps of: preparing the system in a pond entering stage of parent fish of the Dongquasichthys nobilis, a gonad development promoting stage, an oviposition inducing stage and a postpartum management stage. The problems that in the prior art, a water flow mode is single and fixed, a gonad development stimulation mode is extensive, artificial insemination is relied on, the automation degree is low, and the overall breeding efficiency is low are solved. According to the method, an integrated circulating water culture environment is constructed, and complex tide and ocean current conditions of a natural spawning site of the Dongcao are accurately simulated, so that gonad development synchronization of parent fishes is effectively stimulated, the natural breeding behavior of the parent fishes is triggered, and the spawning amount and the fertilization rate are remarkably increased.

The invention discloses a net cage contamination identification and tracking integrated device and method based on electromagnetic and optical fusion perception, belongs to the technical field of intelligent marine equipment and aquaculture engineering, is used for net cage contamination identification and cleaning, and comprises an upper computer, a master mobile operation platform and a slave mobile operation platform, each mobile platform carries a multi-mode sensing unit, an intelligent processing unit and a cooperative control system; the method comprises the steps of multi-modal data synchronous acquisition and preprocessing, electromagnetic and optical fusion identification and tracking, accurate positioning and global mapping, and intelligent evaluation and collaborative decision making. Through deep fusion of optical and electromagnetic perception, the precision and robustness of underwater fouling identification are greatly improved, through integrated design of identification and tracking, dual-machine high-precision stable cooperation is realized, and the problem that a single tracking mode is liable to lose tracking is solved.

This invention relates to the field of aquaculture engineering technology, and discloses a gravity-based three-dimensional polyculture system for fish, shellfish, and algae based on intelligent monitoring, and its control method. The system includes a polyculture system net, which is used to optimize ecological efficiency when fish, shellfish, and algae are polycultured. The net contains polyculture support components. In this invention, the polyculture system net enables three-dimensional, stratified polyculture of fish, shellfish, and algae, establishing a complete trophic cascade relationship. Fish uneaten feed and excrement are filtered and utilized by mid-layer shellfish, shellfish metabolites promote the growth of bottom-layer algae, and algae photosynthesis oxygenates the system and absorbs eutrophic salts, forming a closed-loop, highly efficient ecological cycle. Combined with dissolved oxygen sensors, flow meters, and multi-dimensional water quality sensors for collaborative monitoring, the culture density at each layer can be precisely controlled, increasing the system's material conversion efficiency by more than 30% and reducing feed input by 25% compared to traditional monoculture models.

The application discloses a kind of east star spot circulating water breeding system and method for promoting production simulating natural ocean current, belong to aquaculture engineering technical field.The application of a kind of east star spot circulating water breeding system and method for promoting production simulating natural ocean current, system includes: breeding pond body structure, bionic water flow stimulation subsystem, circulating water treatment subsystem and intelligent control subsystem;Method includes system preparation and east star spot parent fish enters pool stage, gonad development promotion stage, spawning induction stage and postpartum management stage.The application solves the problems of single fixed water flow mode, extensive gonad development stimulation method, dependence on artificial insemination, low automation degree and low overall breeding efficiency in the prior art of east star spot circulating water breeding.The application constructs an integrated circulating water aquaculture environment, accurately simulates the complex tidal and ocean current conditions of east star spot natural spawning ground, thereby effectively stimulates parent fish gonad development synchronization, triggers its natural reproduction behavior, and significantly improves spawning quantity and fertilization rate.

The invention belongs to the technical field of aquaculture engineering, and particularly relates to a seepage type large-flux algae culture device for water purification, which comprises a support frame, a bolting-silk net and a fairing, the support frame is of a hollow cylindrical structure, the bolting-silk net is a cylindrical flexible netting with a closed bottom and an open top, the fairing is of a cylindrical structure with a closed bottom and an open top, and the fairing is of a hollow cylindrical structure. A water inlet and a water outlet are formed in the fairing, a height difference exists between the water outlet and the water inlet, and a spiral rectifying plate is arranged between the water inlet and the water outlet in the fairing in the height direction; the bolting-silk net is located in the spiral rectifying plate, and the supporting frame is located in the bolting-silk net. According to the invention, the flowing effect of outer-layer culture water is utilized, so that the internal algae culture solution and the external culture water maintain permeation exchange, the bolting-silk net does not directly hinder water flow, the water flux is large, the algae water purification module can be conveniently embedded into a circulating water culture system, and the problems of culture solution overflow, water shortage, difficulty in algae collection, difficulty in filter screen cleaning and the like are solved.

The invention relates to the technical field of aquaculture engineering, in particular to a modular gravity type fish-shellfish-algae multi-nutrition-level polyculture system and method.The system comprises a polyculture system support and a polyculture system netting, and the polyculture system netting is fixedly connected with the bottom of the polyculture system support; according to the invention, three-dimensional layered polyculture of fishes, shellfishes and algae is realized through the polyculture system netting, and a complete nutrition cascade relationship is constructed. Fish residual feed and excreta are filtered and utilized by middle-layer shellfish, shellfish metabolites promote growth of bottom-layer algae, algae photosynthesis increases oxygen for the system and absorbs nutrient-rich salt, and an efficient ecological cycle is formed. The culture density of each layer can be accurately regulated and controlled through cooperative monitoring of a dissolved oxygen sensor and a flow velocity meter, the material conversion efficiency of the system is improved by 30% or above, bait input is reduced by 25% compared with a traditional single culture mode, and the ammonia nitrogen content and turbidity can be reduced through the synergistic effect of algae carbon sequestration and shellfish filter feeding while polyculture is achieved.

The invention discloses a continuous circulating shellfish extracting device, which relates to the technical field of aquaculture engineering, and comprises a water-shellfish separating tank, a negative pressure device and a plurality of shellfish collecting tanks, a feeding cavity and a water absorption cavity which are communicated with each other are formed in the water-shell separation tank, and water in a water-shell mixture can enter the water absorption cavity; the multiple shellfish collecting tanks are communicated with the feeding cavity through discharging pipes, and the discharging pipes are provided with discharging control pieces capable of controlling on-off. A discharge port of each shellfish collecting tank is communicated with a discharge pipe, and the discharge pipe is provided with a discharge control piece capable of controlling connection and disconnection; the negative pressure equipment can absorb moisture in the water absorption cavity and provide negative pressure so as to absorb a water-shell mixture into the feeding cavity through the feeding pipe; a water outlet of the negative pressure equipment can be communicated with each shellfish collecting tank through a cleaning pipe, and the cleaning pipe is provided with a cleaning control piece capable of controlling on-off. According to the continuous circulating shellfish extracting device, the production efficiency is improved, and the breakage rate is reduced. The invention further provides a using method of the continuous circulating shellfish extracting device.