315 results about "Aquatic environment" patented technology

The invention discloses a marine plankton hyperspectral imaging detection system, relates to the technical field of spectrum detection, and is used for solving the problem of poor spectrum classification and recognition in a water body environment. According to the method, the hyperspectral image and the environmental disturbance parameters are synchronously acquired, and the disturbance mapping sequence is constructed, so that accurate alignment between the image and disturbance is realized. A disturbance contribution weight matrix is constructed based on a dominant wave band, pixel-level spectrum stripping is carried out, a plankton purification spectrum is extracted, the spectrum purity and the recognition accuracy are improved, and a spectrum abnormal drift region is precisely recognized in combination with derivative spectrum change and image texture features; a coupling relation between the drift region and background disturbance is further established, a dynamic interference factor map is generated, and identification model parameters are dynamically adjusted, so that the identification stability and classification accuracy of the system in a complex interference environment are improved, and the method is suitable for multi-scene marine ecological monitoring.

The invention relates to the technical field of computer vision and radar perception, in particular to a ship intelligent detection system based on a convolutional neural network and radar signal processing, which comprises a ship three-dimensional perception modeling module, a visual feature hierarchical fusion module, a target detection module and an anomaly detection module. The system emphatically utilizes deep learning methods such as a convolutional neural network and the like to realize three-dimensional space modeling and visual feature extraction of a ship by a radar in a water area environment. And a layered adaptive fusion and mutual information enhancement mechanism is adopted. The end-to-end detection model introduces a spatial hierarchy weighting strategy, so that the object detection accuracy and interpretability under the conditions of multi-target density, shielding and dynamic change in a complex water scene are improved. The system realizes continuous tracking, anomaly detection and risk early warning of ship navigation behaviors based on space-time dynamic modeling. The whole scheme has high precision, strong robustness and adaptive ability, and can meet the requirements of ship detection and intelligent management and control in complex water area environments such as smart ports and water traffic.

An aquatic cleaning system includes a pool cleaner having a housing, a drive system for moving the housing, and a debris basket associated with the housing. The debris basket is designed to receive debris from the aquatic environment. The system includes a data capture system including an imaging device operably coupled to the cleaner. The system also includes a detection system having a storage medium storing a trained model, and a processor designed to receive data elements from the data capture system and input the data elements into the trained model to identify a detected object within the aquatic environment as being debris or non-debris. The system also includes a control system in communication with the detection system and the drive system to move the pool cleaner toward the detected object identified by the detection system when the detected object is identified by the detection system as being debris.

The invention provides an AI-based trachinotus ovatus juvenile fish culture water parasite prediction and prevention method and system, and the method comprises the steps: collecting multi-source data from a culture water body through a sensor array, including a nucleic acid signal, a fish school behavior track and an environment parameter sequence, and obtaining an original data set; unifying the data format and the acquisition frequency according to the original data set by adopting a time sequence alignment method, and obtaining an aligned feature flow; aiming at the aligned feature flow, applying a convolutional neural network to extract a space-time pattern of a nucleic acid signal and an abnormal index of a fish school behavior, and determining an extracted feature set; if the abnormal index in the extracted feature set exceeds a preset threshold value, a causal association between environmental parameters and parasitic risks is classified through a support vector machine, and a preliminary risk level is judged; simulating a water body change scene according to the comprehensive causal model to obtain a predicted trajectory of parasite propagation; and determining a quantitative score of the parasite risk and generating a prevention and control instruction sequence by comparing the predicted trajectory with the real-time monitoring data.

The invention provides an unmanned ship grabbing and positioning system based on multi-body configuration design, and belongs to the technical field of unmanned ships, the unmanned ship grabbing and positioning system comprises a multi-body ship body, a machine vision module, a positioning calculation unit, a stable platform, a grabbing device and a control module, the multi-body ship body is composed of a double-hull structure or a three-hull structure; the machine vision module is used for identifying a target object and acquiring visual information of the target object; the positioning calculation unit is connected with the machine vision module and is used for calculating spatial position coordinates of the target object according to the acquired vision information; the stable platform is arranged on the multi-hull ship body; the grabbing device is installed on the stable platform and used for grabbing the target object according to the coordinates calculated by the positioning calculation unit. The robot has the comprehensive advantages of being high in environmental adaptability, high in positioning precision, flexible in operation, good in controllability, high in maintainability and the like, and can efficiently cope with target object grabbing operation in the complex water environment.

This invention provides a chitosan-loaded biochar and its applications. The provided chitosan-loaded biochar is prepared by treating biochar with an alkaline solution, followed by mixing the modified alkaline-treated biochar with a solution containing dissolved chitosan. The chitosan-loaded biochar prepared by this invention can be used to adsorb chemical pollutants in aquatic environments and can also be used as a carrier for microorganisms. By modifying the biochar with potassium hydroxide, this invention allows for the loading of more chitosan, significantly improving the utilization rate of chitosan. This invention increases the specific surface area of ​​the biochar, thereby increasing the attachment sites for chitosan. Compared to other methods that increase chitosan loading by increasing the thickness of the chitosan, this invention not only allows for a greater chitosan loading on the biochar but also ensures a more uniform distribution of chitosan on the biochar, fully leveraging the advantages of chitosan-loaded biochar.

An LED illuminated buoy system is disclosed, designed to enhance maritime safety and visibility. The system includes a weighted base with a conical shape for stability and a semi-translucent flotation part that extends above the waterline. The buoy houses an LED light source within the base, programmable for various colors and patterns. A sealing connection between the base and flotation part prevents water ingress. The system also features a communication interface for data transmission and remote operation. The buoy can be anchored securely and is adaptable for use as a lamp on land. The system's design allows for easy assembly and maintenance, with environmental resistance features integrated for durability. The buoy serves as a navigational aid, safety marker, and versatile lighting solution in aquatic environments.

The present application provides biodegradable microcapsules, based on specific poly ß-amino ester shells that can encapsulate and retain cargoes such as, lipophilic, or hydrophobic core materials comprising fragrances, butters, essential or other oils; or oil solubilized ingredients, process of making said biodegradable microcapsules and their applications in various industries. Present application further provides biodegradable shell materials that show evidence of biodegradation or non-persistence in aquatic based and / or soil or compost based environments, and which are stable on storage before use.

The invention discloses a dense dual-network anti-swelling self-adhesion hydrogel sensor based on multiple dynamic crosslinking as well as a preparation method and application of the dense dual-network anti-swelling self-adhesion hydrogel sensor. The preparation method specifically comprises the following steps: adding acrylic acid, hydroxyethyl methylacrylate, a chemical cross-linking agent and a photoinitiator into deionized water, and stirring at room temperature until the materials are completely dissolved; then, adding a certain amount of tannic acid and chitosan quaternary ammonium salt into the mixture, and fully stirring until a uniform precursor solution is formed; then, the precursor solution is transferred into a reaction template, and the reaction template is placed under an ultraviolet lamp to initiate curing; therefore, the anti-swelling hydrogel can be obtained, in various solvents, the material has good anti-swelling performance and shows excellent adhesion and sensing durability, and the problems that a traditional hydrogel sensor is limited in application in a wet environment and loses sensing performance are solved. The system can be widely applied to human body motion monitoring and underwater information transmission in a water environment, and underwater communication is realized.

Disclosed herein is a hand-held underwater dredge integrated with a metal detector, designed for locating and retrieving metallic objects from aquatic environments. Equipped with a suction-generating electric pump and powered by an onboard battery to enable operation while fully submerged, the dredge features a pipe system leading to a catch can that captures metal items while expelling the water drawn into the pipe system by the generated suction. In operation, users scan a riverbed, seabed, or lakebed using the metal detector. Once a metal item is detected, the user places the suction end of the pipe system over the metal item and activates the electric pump to start the suction, leading to capture of the metal item in the catch can for retrieval. This streamlines the process of underwater treasure hunting, combining detection and collection into a single user-operated system.

The invention relates to the technical field of carbon nanosheet preparation, and discloses a carbon nanosheet precursor ratio intelligent decision-making method based on machine learning. Data collection: collecting data samples of different mass ratios, corresponding preparation parameters and performance indexes of the carbon nanosheets of the citric acid and the urea in the process of preparing the carbon nanosheets by the microwave-assisted method; 2, data preprocessing: preprocessing the collected data samples, including data cleaning, normalization and feature selection, so as to improve data quality and applicability; according to the intelligent decision-making method for the carbon nanosheet precursor proportion based on machine learning, the proportion of citric acid and urea is accurately regulated and controlled through a machine learning model based on historical data and real-time feedback, so that the structure and performance of the carbon nanosheet are better, and the detection sensitivity of an electrochemical sensor to substances such as heavy metal ions Cu is improved; the detection limit is reduced, the anti-interference capability is enhanced, and stable and accurate detection in a complex water environment is ensured.

The utility model discloses a foldable mesh cage type ampullaria gigas trapping device, and relates to the technical field of biological control. Comprising a folding net cage main body, a snail collecting cage arranged on the folding net cage main body and communicated with the interior of the folding net cage main body, a food calling bag arranged in the folding net cage main body in the length direction, a food calling agent contained in the food calling bag, a plurality of snail inlets formed in the folding net cage main body and guide assemblies arranged on the outer sides of the snail inlets. One end of the folding mesh cage body away from the conch collecting cage is closed; each pomacea canaliculata collecting cage is provided with a funnel-shaped inlet for collecting pomacea canaliculata and a closed net bag, and a phagostimulant is placed in the closed net bag; the portable folding chair is reasonable in design, has a foldable design, and is convenient to carry and store. The net cage structure effectively traps the ampullaria gigas and prevents the ampullaria gigas from escaping, and meanwhile a phagostimulant can be placed to attract the ampullaria gigas to enter the net cage. The device is suitable for rice fields and other aquatic environments, is easy to install and can be repeatedly used, and pollution to the environment is greatly reduced.

The invention discloses a fishery water body environment dissolved oxygen control optimization method, and belongs to the technical field of control optimization, and the method comprises the steps: S1, constructing a fishery water body management dissolved oxygen PID control system; s2, introducing an improved barber optimization algorithm; s3, setting a dissolved oxygen PID control parameter in the fishery water body management dissolved oxygen PID control system by using an improved barber optimization algorithm, and obtaining an optimal PID control parameter through optimization; and S4, setting the three optimal control parameters obtained through optimization by using the improved barber optimization algorithm as parameters of a dissolved oxygen PID controller in the fishery water body management dissolved oxygen PID control system, and optimizing a dissolved oxygen regulation control effect. By introducing the improved barber optimization algorithm, higher optimization precision is realized, and a PID controller parameter solution with better performance is obtained, so that the dissolved oxygen concentration of the water body can be more accurately and stably maintained, and a reliable technical guarantee is provided for fishery water body dissolved oxygen management.

The invention provides a low-flow-resistance underwater sound insulation device which is characterized by comprising a plurality of air bags with the longitudinal sections in the shape capable of being densely laid. A set gap is kept between every two air bags, and the air bags are perpendicular to the water surface The device has the advantages that the broadband sound insulation performance is excellent, the main frequency band of underwater noise measurement is covered, and the influence of various noise sources on the test environment can be effectively inhibited; the hydrodynamic compatibility is good, the through-flow design of air bag array arrangement can maintain low flow resistance while realizing sound isolation, and significant disturbance to a test environment is avoided; and the modular design of the air bag is convenient to install, maintain and expand, and large-scale deployment in various water area environments is facilitated.

This invention specifically relates to a biomimetic underwater robot body perception and autonomous obstacle avoidance method based on dual-path 1D-CNN, comprising: measuring the deformation data of the structure during water movement using digital image correlation equipment; deploying multiple flexible sensors in an array in areas of significant deformation to accurately acquire deformation signals; a central control unit monitoring the sensor signals in real time and performing collision detection using a lightweight dual-path 1D-CNN algorithm; when a collision signal is detected, the central control unit automatically issues control commands, which are converted into motor output parameters by a central pattern generator to change the robot's motion posture, enabling autonomous obstacle avoidance. This invention achieves real-time motion monitoring and highly robust, low-latency autonomous obstacle avoidance for biomimetic underwater robots in complex aquatic environments, providing an effective self-protection mechanism and improving its swimming safety and intelligence level.

This invention belongs to the field of wastewater treatment technology, specifically relating to a method for treating wastewater from industrialized aquaculture. This invention combines physical, biological, and chemical treatment methods, enabling efficient wastewater treatment in a short time, reducing the footprint and operating costs of treatment equipment, and exhibiting high economic efficiency and practicality. The combined use of Spirulina with Bacillus licheniformis, Bacillus subtilis, and Micrococcus luteus forms a stable algae-bacteria symbiotic system in the aquatic environment, accelerating the removal of nitrogen and phosphorus from the aquaculture wastewater and effectively reducing the chemical oxygen demand (COD). After treatment using this method, the wastewater reuse rate is no less than 80%, and the treated wastewater quality meets national discharge standards.

This invention provides granular materials for environmental improvement that, after being introduced into a body of water, initially float to promote the attachment and dispersal of microorganisms, and then naturally sink to improve the bottom sediment. [Solution] This granular material is formed by mixing a base material containing iron powder and carbon powder with a lightweight porous material derived from plants and then press-molding it. The granular material has a fine void structure inside, and initially floats on the water surface or near the surface due to the buoyancy of the void structure and the lightweight porous material derived from plants. After a certain period of time, as water is absorbed due to the stagnation of the water and the iron powder oxidizes, the specific gravity increases and the material sinks. Without using any special power or equipment, it can gradually achieve both "diffusion and microbial attachment in the surface layer" and "improvement of water and sediment quality in the bottom layer" simply by being added. Furthermore, by using recycled materials such as used hand warmers as the base material, it is possible to provide a resource-recycling material with a low environmental impact.

This invention belongs to the field of SERS detection technology and relates to the application of an Ag / Bi4O5Br2 / Ni-Fe double hydroxide composite SERS substrate in the detection of CV in wastewater. First, a Bi4O5Br2 / Ni-Fe double hydroxide is prepared, and silver nanoparticles are loaded onto its surface using a liquid-phase chemical reduction method. This material combines the LSPR effect of silver nanoparticles with the interfacial coupling and multiple active sites of the Ni-Fe double hydroxide, enabling the regulation of interfacial charge transfer and enhancing molecular adsorption. Utilizing the excellent adsorption and enrichment properties of Bi4O5Br2, a highly efficient charge transport system is synergistically constructed from multiple components, improving the SERS chemical enhancement effect and amplifying the CV Raman signal. This invention overcomes the shortcomings of weak signals and insufficient stability of single substrates, achieving sensitive detection of trace CV in water. The substrate preparation process is simple, environmentally friendly, and highly practical, showing broad application prospects in the field of trace CV analysis in aquatic environments.

This invention provides a cobalt-based metal nitride nanozyme, its preparation method, and its applications. The cobalt-based metal nitride nanozyme provided by this invention is a cobalt-based nitride nanozyme Co4N-600 with a Co-N coordination structure. Experiments have shown that the nanozyme provided by this invention, when used as a catalyst in a PMS system for degrading organic matter, exhibits a high degradation rate and low toxicity of the degradation products, demonstrating great potential for application in complex aquatic environments. Furthermore, the nanozyme provided by this invention exhibits good stability and reproducibility, showing broad application prospects.

An integrated intelligent equipment for processing hairtail. It comprises a rack, a feeding port, an inclined filter screen, a self-adaptive clamping and conveying module, a belly-splitting and internal organs removing module, a fixed-length cutting module, a cold-chain temporary storage module and a controller. The integrated intelligent equipment for processing hairtail has the following beneficial effects: the belly-splitting and internal organs removing module uses a reference for double cutters in the same station, after the belly-splitting cutter splits the belly, the internal organs removing cutter effectively opens the incision and completely scrapes off the internal organs, and the qualified rate of the finished product reaches more than 98%, solving the problem of internal organs residue in the industry. The self-adaptive clamping and conveying module adopts a pure mechanical structure combined with a limiting block and a compression spring, which is a special self-adaptive solution with low cost, high reliability, and is suitable for the characteristics of long and easy deformation of hairtail, avoiding the instability and high cost of the vision system in the humid and complex aquatic environment, and having stronger practicality.

This invention discloses a method for the simultaneous preparation of micronized and stabilized zero-valent iron (ZVFe) based on ball milling with terephthalic acid, belonging to the field of groundwater pollution remediation materials. The method includes the following steps: 1) incorporating terephthalic acid into micron-sized ZVFe powder and mechanically ball milling it; 2) cleaning the material with a solvent and drying it to obtain micronized and stabilized ZVFe reducing material. This invention simultaneously achieves the micronization and stabilization of ZVFe. This method enhances the reducing activity, internal surface hydrophobicity, and electron selectivity of ZVFe materials, improves their reducing performance and electron selectivity for pollutants such as halogenated hydrocarbons and heavy metals, effectively inhibits the oxidative deactivation of ZVFe materials in the aquatic environment and the hydrogen evolution side reaction with water, enabling ZVFe materials to maintain high reducing activity stably in water for a long period. This invention solves the technical problems of poor stability and difficult storage of micronized ZVFe materials in water, which is beneficial for reducing material replacement frequency and resource consumption.

This invention relates to a biological-ecological synergistic purification system for road runoff pollutants in municipal roads, belonging to the field of municipal road rainwater treatment technology. With the acceleration of urbanization, the pollution of natural water bodies by road runoff pollutants is becoming increasingly serious. This biological-ecological synergistic purification system uses a bar screen to intercept large particles and sludge, a biofilm reactor to degrade pollutants using a combined packing layer, an ecological filter to further purify the water using multi-layered filter media and plants, and an ultraviolet disinfection device to kill pathogens. Finally, the purified water is discharged into natural water bodies. It is mainly used to effectively purify road runoff pollutants in municipal roads and protect the natural aquatic environment.

This invention discloses a multi-stage flow-guiding dehydration structure for a purification vessel and a comprehensive aquatic environment purification vessel. The structure uses horizontal plates, multiple vertical plates, and horizontal railings to guide some moisture from solid waste into a second collection box, which is then discharged through a second drain hole. A sponge absorbs some moisture from the solid waste, and the remaining moisture is discharged through an outlet, thus reducing the moisture content of solid waste. The structure is characterized by comprising a hull, a first collection box, a second collection box, an L-shaped placement plate, horizontal plates, vertical plates, horizontal railings, inclined guide plates, a sponge, an outlet, a cap, and a short outlet pipe. The first collection box is embedded in a slot in the center of the top surface of the hull, and the first collection box has an open top surface, flush with the top surface of the hull. Two second collection boxes are respectively embedded in slots on either side of the top surface of the hull, and the second collection boxes also have open top surfaces.

The invention discloses a squaliobarbus curriculus breeding and breeding method based on aquaculture. According to the method, slow flow domestication is started from the fry stage, the fries are made to adapt to the dynamic water environment from small, the physique is obviously enhanced, the fries are not prone to being infected with diseases during adult fish culture, and the trouble and cost of medication are reduced. In addition, through the feed transition domestication in the S3, the palatability of the fries eating the compound feed in the later stage is better, the growth speed is more uniform, the subsequently screened water-infused fishes are neat in specification, the water-infused fishes can more quickly adapt to fasting and water flow environments during water infusing, the weight-reducing and fishy smell-removing effects are more stable, the meat quality is compact and elastic, the mud fishy smell basically disappears, and the quality and the appearance of the fishes are directly improved; a cycle is formed from parent fish selective culture to sales feedback, the parent fish breeding direction and the adult fish culture density can be adjusted in time according to the requirements of the market end, the unsalable risk caused by blind culture is avoided, and the income of farmers is guaranteed.

The utility model relates to aquatic environment monitoring equipment technical field discloses a kind of high-level pond cultivation sedimentation particulate matter in-situ collection device, comprising: collector main body, the hollow tubular transparent container of top opening, its lateral wall is equipped with volumetric graduation, for accommodating and observing the particulate matter of collection;Collection net, detachably cover in collector main body top opening place;Positioning float ball, by flexible cable and collector main body are connected;Stable base, be located in collector main body bottom and collector main body form integrated structure, it is formed expansion support surface along the radial direction of collector main body and extends outward;Counterweight, detachably fixed below stable base. The device structure is simple, low in cost, easy to use and carry, can carry out in-situ, passive, long time particulate matter collection in specific area in high-level pond cultivation.

This invention discloses a composite nanofiber membrane for immobilizing microorganisms to remediate diesel-contaminated water and its preparation method. Specifically, the composite nanofiber membrane is a thermoplastic polyurethane / nanohydroxyapatite composite nanofiber membrane, which not only possesses excellent biocompatibility and mechanical strength but is also non-toxic and harmless, offering considerable cost-effectiveness. Upon introduction into diesel-contaminated water, the composite nanofiber membrane first rapidly adsorbs diesel at the water / oil interface, preventing further diffusion and toxic effects on the aquatic environment. Subsequently, due to the additional adsorption sites provided by the nanoparticles on the membrane, a large number of free bacteria are adsorbed onto the membrane, enhancing the metabolic activity of bacterial cells and their resistance to the toxicity of stubborn compounds, while also strengthening the affinity between hydrophobic compounds and cells, thereby increasing the degradation rate of diesel hydrocarbons by microbial cells. This invention improves the remediation effect of diesel wastewater while expanding the application of composite nanofiber membranes in the field of water pollution treatment.

A modular adjustable fixing device for an underwater acoustic transducer array includes a main support rod, a central structural component, a transducer fixing ring, and a sliding connector. One end of the main support rod is fixedly connected to the interior of the central structural component through three sets of square holes. The other end extends to form a Y-shaped array frame. The extended end of the main support rod is used to fix the transducer fixing ring, which is fixed to the main support rod by the sliding connector and suspended from the rear side of the central structural component. The sliding connector is slidably fitted onto the main support rod and positioned by fasteners, with its end connected to the transducer fixing ring. The central transducer fixing ring is fixed to the top of the central structural component. This invention allows for flexible adjustment of the baseline length of the underwater acoustic transducer array by adjusting the position of the sliding connector, meeting the acoustic testing requirements of different array models. Furthermore, its modular design facilitates easy disassembly and is suitable for stable fixing of transducer arrays in complex aquatic environments.

A process for harvesting fish eggs, particularly Salmon fish eggs, is provided. The process comprises rearing sexually immature salmon in an aquatic environment in stages during which at least the exposure to light and the duration of time are regulated. The rearing comprises at least a winter-summer period comprising a winter life cycle stage in which the fry are exposed to light simulating exposure to winter light, and a subsequent summer life cycle stage in which the fry are exposed to light simulating exposure to summer light, wherein the total Accumulated Thermal Unit (ATU) during the winter-summer period does not exceed 5000. The invention also provides salmon eggs produced by the process disclosed.

The present disclosure relates to a device and method for the detection of microplastics in aquatic environments. An aspect of the disclosure comprises a device for the detection in situ of microplastics in aquatic environments comprising: an inlet and an outlet; a separation unit, within said inlet and outlet, with at least two arrays of micropillars separated from each other; a sample container, coupled to the inlet of the separation unit, comprising an aeration system; a detection unit aligned substantially perpendicularly to the separation unit; wherein the inlet comprises a coiled tube comprises a length from 25 cm to 125 cm; wherein the separation unit comprises a flow rate comprised from 10 µL / min to 150 µL / min, preferably from 50 µL / min to 150 µL / min, to promote particles separation according to their sizes due to an axial spreading of the particles along the direction of the laminar flow.

This invention belongs to the field of microbial technology and discloses a strain of *Citrobacter freundii* bacteriophage PRF337, its bacteriophage composition, and its applications. The *Citrobacter freundii* bacteriophage PRF337 was deposited on May 26, 2025, at the China General Microbiological Culture Collection Center (CGMCC), located at No. 3, Courtyard 1, Beichen West Road, Chaoyang District, Beijing, with accession number CGMCC No. 46489. The bacteriophage PRF337 exhibits broad-spectrum bactericidal activity against *Citrobacter freundii*, capable of lysing *Citrobacter freundii* strains containing different virulence genes and from different sources. It also possesses certain temperature and pH stability and can be used as an active ingredient in pharmaceutical preparations, environmental disinfectants, and water purifiers. It can effectively control *Citrobacter freundii* infection in aquatic animals such as fish and shrimp in aquaculture environments and can also be used for the purification of pathogens in aquatic environments. It is safe to use and effectively avoids the problems of antibiotic residues and pathogen resistance caused by antibiotic use.