Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

41results about How to "Significant innovation" patented technology

Self-organizing neural network-based unmanned aerial vehicle mission planning method

The invention provides a self-organizing neural network-based unmanned aerial vehicle mission planning method. The method includes a self-organizing neural network initialization step, a winning nodeselection step, a winning node winning neighborhood calculating step, a network parameter updating step and a dynamic response step. According to the method, the structure of a self-organizing neuralnetwork and the weights of nodes are initialized; the weights are normalized; an input vector is received; a node is selected as a winning node, the inner product of the selected node and the input vector being the largest; all nodes in the winning neighborhood of the winning node are calculated; the weights of the nodes are updated differently according to distances from the nodes to the winningnode; and when an emergency situation occurs, the parameters of the network are dynamically adjusted, so that timely response can be made. The weights of the nodes in the winning neighborhood are updated; a multi-constraint condition is introduced during the execution process of the algorithm; a chaotic mechanism is introduced to solve the problem of detouring of unmanned aerial vehicles at a plurality of task points; and a dynamic response mechanism is adopted, so that the adaptability of an unmanned aerial vehicle group in a dynamic environment can be improved, and therefore, more effectiveunmanned aerial vehicle mission planning can be realized.
Owner:NANJING UNIV OF POSTS & TELECOMM

A marine observation big data visualization analysis method based on a complex network

A marine observation big data visualization analysis method based on a complex network comprises the steps of performing grid division on original marine observation big data, constructing daily average data in a grid into a single Gaussian model and a mixed Gaussian model, and obtaining nodes represented by probability feature vectors; Determining the similarity between any two nodes in the single Gaussian network and the multi-Gaussian network to obtain a similarity matrix; And setting a threshold value to obtain an adjacent matrix, calculating the degree, the clustering coefficient and thenode betweenness of each node according to the adjacent matrix, and visualizing or drawing the degree, the clustering coefficient and the node betweenness on double logarithm coordinates or on a map.According to the invention, the Gaussian mixture model is combined with the complex network theory for the first time; The invention provides a marine observation big data analysis and visualization method, the fluctuation of ocean motion reflected on the data is restored to the maximum extent, and model parameters are used for expressing high-dimensional ocean data, so that the defect that a network model constructed on the basis of Pearson similarity can only measure time sequence data is overcome, and the calculation speed is also improved.
Owner:OCEAN UNIV OF CHINA

Cement-based material for adsorbing and solidifying chloride ions and preparation method thereof

ActiveCN109133802AGood mechanical propertiesGood ability to absorb and solidify chloride ionsSlagDissolution
The invention relates to a cement-based material for adsorbing and solidifying chloride ions and a preparation method thereof and belongs to the field of durability of cement-based materials. The cement-based material comprises the following raw materials in part by weight: 90-560 parts of Portland cement, 10-30 parts of dispersing agent, 2-6 parts of graphdiyne nano-material, 30-280 parts of phosphorus slag powder, 20-250 parts of quicklime and 70-375 parts of mixing water. The preparation method comprises the following steps: modifying the phosphorus slag powder by adopting the quicklime andplacing the dispersing agent and the graphdiyne nano-material in the mixing water for dissolution to prepare a dispersed suspension; adding the graphdiyne suspension in the Portland cement doped withthe phosphorus slag powder to stir and performing vibratory compaction molding on a stirred graphdiyne cement slurry pouring mold; de-molding after standard curing of a sample to a specified time. The cement-based material has good abilities to adsorb and solidify the chloride ions and can significantly improve the durability of reinforced concrete; meanwhile, the pressure of natural resources iseffectively relieved by efficient utilization of the phosphorus slag powder, so that the purposes of energy saving and emission reduction, building material recycling and green industrialization areachieved.
Owner:DALIAN UNIV OF TECH

End effector for fruit and vegetable picking robot

The invention relates to an end effector for a fruit and vegetable picking robot. The end effector comprises a grabbing system, a cutting system, a sensing system, a shell and the like; the grabbing system grabs fruits into an inner cavity of the effector by utilizing five rubber rollers rotating at a high speed through high-speed rotation and huge friction force to realize a fruit grabbing action; the cutting system is that a lead screw drives a diamond-shaped frame to perform forward and backward telescopic movement, an electromagnetic mechanism and a saw blade are pushed to perform forward and backward telescopic movement, and a serrated blade is repeatedly driven at a high speed by using the electromagnetic mechanism to cut a branch; the sensing system consists of a pressure sensor, a miniature vision sensor and the like and plays roles in action connection and process control in the processes of the grabbing the fruits and cutting fruit stalks. The end effector provided by the invention has the benefits that with the adoption of novel grabbing, driving and cutting methods, simplicity and reliability are realized, the picking speed of an intelligent picking robot is greatly improved, and the control difficulty and the cost are low. The end effector can meet the demands of a ball-shaped picking robot and is beneficial to the improvement of the picking speed of the fruit picking robot and the practical use and the commercialization of the robot.
Owner:NANCHANG UNIV

Application of ginsenoside CK in preparation of external drugs to treat atopic dermatitis

The invention relates to the technical field of medical treatment, in particular to application of ginsenoside CK in the preparation of external drugs and health cosmetics to treat atopic dermatitis.OVA-sensitized (ovalbumin-sensitized) atopic dermatitis mouse models are established; filaggrin gene-deficient atopic dermatitis mice are selected; the two types of mice are fed with ginsenoside CK with different concentrations. The results show that ginsenoside CK can evidently reduce the scratching frequency of the OVA- sensitized AD (atopic dermatitis) model mice and reduce epidermal and dermalthickness of the mice; the therapeutic effect of a medium concentration group and that of the high concentration group are evidently higher than that of the low concentration group and that of a dexamethasone cream group; ginsenoside CK can reduce dermatitis score and scratching frequency of Ft mice and the expression of IL-4 at skin lesions of the Ft mice, the therapeutic effect of the medium concentration group is higher than that of the low concentration group and that of the high concentration group, and dexamethasone cream cannot improve atopic dermatitis type skin lesions with skin barrier dysfunction caused by filaggrin gene deficiency. The external drugs and health cosmetics made with ginsenoside CK herein have the advantages of good therapeutic effect and good safety.
Owner:SHUGUANG HOSPITAL AFFILIATED WITH SHANGHAI UNIV OF T C M

Red mud/Yellow River sediment-based geopolymer flood prevention stone and preparation method thereof

The invention belongs to the field of comprehensive utilization of solid waste resources, and provides a red mud/Yellow River sediment-based geopolymer flood prevention stone and a preparation methodthereof. The red mud/Yellow River sediment-based geopolymer flood prevention stone comprises the following raw materials: 100-400 parts of red mud, 100-400 parts of Yellow River sediment, 30-100 partsof mineral powder, 15-25 parts of excitant and 25-80 parts of mixing water. The preparation method comprises the following steps of: firstly, adding water glass as an excitant into mixing water, andcarrying out ultrasonic stirring treatment to prepare a uniformly dispersed water glass aqueous solution; secondly, adding the mixture of the red mud, the Yellow River sediment and the mineral powderinto the water glass aqueous solution, performing stirring, and carrying out compression molding on the stirred red mud/Yellow River sediment slurry by virtue of a pouring mold; and finally, maintaining the sample in an air environment, and removing the mold. The red mud/Yellow River sediment-based geopolymer flood prevention stone prepared by the invention has the lower production cost, has the better strength, is beneficial to promoting the comprehensive utilization of solid waste resources such as red mud, Yellow River sediment and the like, and has remarkable environmental protection, economic and engineering application values.
Owner:DALIAN UNIV OF TECH

Collagen polypeptide nanosphere surface positive charge modification method

The invention discloses a collagen polypeptide nanosphere surface positive charge modification method. The method includes: dispersing collagen polypeptide nanospheres in distilled water, adding Al2(SO4)3 under stirring, carrying out stirring reaction, then regulating the pH value of the system to 3.5-5.0, further carrying out stirring reaction, and performing centrifugation and separation to obtain Al<3+> modified collagen polypeptide nanosphere; dispersing the Al<3+> modified collagen polypeptide nanosphere in distilled water, adding a strong positive charge material under stirring, adjusting the pH value of the system to 4-7, introducing nitrogen for protection, adding an initiator, carrying out stirring reaction, centrifugation, separation, and freezing drying, thus obtaining the positive charge surface modified collagen polypeptide nanosphere. According to the aluminum tanning principle in a tanning chemical process, cations with good binding capacity with fluorine ions are introduced through reaction of Al<3+> and collagen polypeptide nanospheres, also the strong electropositive compound is further introduced through Michael addition reaction, and the excellent performance of nanoparticles is combined so as to effectively adsorb and separate fluorinions in wastewater.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Hydrofining process for catalytically cracked crude gasoline

The invention discloses a hydrofining process for catalytic cracking crude gasoline, which is improved on the basis of the original catalytic cracking and catalytic stabilization gasoline hydrofiningprocess flow as follows: catalytic crude gasoline is directly fed into a gasoline hydrofining device instead of being fed into an absorption tower, and other processes are not changed. Therefore, a catalytic absorption stabilizing system only processes rich gas and does not process crude gasoline, so that the load and the energy consumption are greatly reduced; the hydrogenation operation is not influenced by a component which is not more than C4 and is brought into hydrogenation along with crude gasoline, the component is pulled out from a stripping tower along with acidic components such asH2S and NH3, the components are returned to the catalytic refinery along with the original process, and the steam pressure of the gasoline is stabilized by the product, so that the steam pressure of the gasoline is ensured; a small amount of gasoline which is absorbed and stabilized is brought in along with rich gas to be continuously distilled from the bottom of a stabilizing tower, and is mixedwith crude gasoline for hydrogenation after heat exchange, so that the material balance of the combined device is not changed.
Owner:广东碳寻科技有限公司

Broadband phased array radar anti-decoy interference method based on fractional domain-frequency domain processing

The invention belongs to the field of radar anti-interference, and discloses a broadband phased array radar anti-decoy interference method based on fractional domain-frequency domain processing. The method comprises the following steps: acquiring a plurality of echo signals and target position information of a phased array radar antenna array; all echo signals are converted to a fractional domain, and an interference and noise covariance matrix and a signal and noise covariance matrix of the fractional domain are obtained according to the fractional domain covariance matrix; performing convex optimization to obtain a fractional domain steering vector of the target echo signal, obtaining a beam forming weight vector according to the fractional domain steering vector of the target echo signal, and generating a beam forming signal; performing low-pass filtering on the beam forming signal of the fractional domain in the fractional domain by using a low-pass filter with the cut-off frequency of fmu to obtain a fractional domain target echo signal; and carrying out fractional domain inverse FrFT processing to obtain a time domain target echo signal. Robust narrow-band beam forming and fractional domain-frequency domain low-pass filtering are applied in the fractional domain to realize effective suppression of broadband decoy LFM interference signals.
Owner:中国人民解放军火箭军工程大学

Cryopreservation method of cranoglanis bouderius seminal fluid and diluent thereof

The invention discloses a preserved diluent of cranoglanis bouderius seminal fluid and a cryopreservation method of the cranoglanis bouderius seminal fluid. The preserved diluent is prepared from sugar, sodium salt, potassium salt, calcium salt, tyrosine, glycine, distilled water and an anti-freezing agent-dimethyl sulfoxide. The cryopreservation method comprises the following steps: selecting good male parent fish meeting the conditions to carry out seminal fluid collection, preserving in the preserved diluent in which neomycin sulfate and streptomycin are added, adopting a cooling rate which is -10.5 DEG C/30 seconds, and putting the seminal fluid in liquid nitrogen for cryopreservation after reaching -150 DEG C; when unfreezing and recovering are needed, taking out the cyropreserved cranoglanis bouderius seminal fluid, adding a PBS (Phosphate Buffer Solution) of which the volume percentage is 0.65 to 0.7 percent as an unfreezing solution, and putting the cranoglanis bouderius seminal fluid in a water bath of which the temperature is 32 to 40 DEG C for rapid unfreezing and recovering. According to the technology disclosed by the invention, the durability of preservation time of the cranoglanis bouderius seminal fluid can be ensured, the protection effect of the seminal fluid is good, and sperms after preservation are high in survival rate and good in vitality.
Owner:SOUTH CHINA AGRI UNIV +2

Red mud/Yellow River sediment artificial fish reef and preparation method thereof

The invention discloses a red mud/Yellow River sediment artificial fish reef and a preparation method thereof, and belongs to the field of comprehensive utilization of solid waste resources. Raw materials comprise 100-400 parts of red mud, 100-400 parts of Yellow River silt, 30-100 parts of mineral powder, 50-200 parts of shells, 15-25 parts of an exciting agent and 25-80 parts of mixing water. The preparation method comprises the following steps: firstly, adding water glass as an exciting agent into mixing water to prepare a uniformly dispersed water glass aqueous solution; secondly, adding an aqueous solution into the red mud, the yellow river sediment, the mineral powder and the shell mixture for stirring, and carrying out compression molding on the stirred yellow river sediment slurry casting mold; and finally, maintaining the sample in an air environment, and removing the mold. Compared with a common cement concrete artificial fish reef, the preparation and production cost of the artificial fish reef is effectively reduced, meanwhile, the artificial fish reef has good strength and durability, and the alkalinity of the system is low. Comprehensive utilization of solid waste resources is promoted, the production cost of the artificial fish reef is reduced, other properties such as durability of the artificial fish reef are improved, and the artificial fish reef has remarkable environment-friendly, economic and engineering utilization values.
Owner:DALIAN UNIV OF TECH

Catalytic cracking unit-hydrogenation unit combined energy-saving technological process

The invention belongs to the technical field of petrochemical engineering, and discloses a catalytic cracking unit-hydrogenation unit combined energy-saving technological process. The technological process has the following improvements on the basis of a conventional catalytic cracking device and a conventional technological process: rich diesel oil at the bottom of a re-absorption tower is directly fed into a diesel oil catalytic hydrocracking device instead of being fed into a main fractionating tower for recycling in the prior art, a conventional poor diesel oil-rich diesel oil heat exchanger is cancelled, and other pipeline flows are not changed. According to the technological process, a rich diesel oil refining process of the catalytic cracking device is omitted; even if the rich diesel oil which is not subjected to refining treatment contains a certain amount of gasoline and LPG components, material balance of a combined device is not affected; and the rich diesel oil from the bottom of the catalytic reabsorption tower is directly subjected to hydrocracking, so the catalysis procedure for the rich diesel oil can be omitted, the processing load of the main fractionating toweris reduced, downstream hydrogenation is not influenced basically, and the method has remarkable innovative significance.
Owner:SOUTH CHINA UNIV OF TECH

NiFe-LDH cement-based composite wave-absorbing material and preparation method thereof

InactiveCN112745084AImprove structural strengthImprove electromagnetic wave absorption performanceSlurryMultiple frequency
The invention belongs to the field of environmental protection, and provides a NiFe-LDH cement-based composite wave-absorbing material and a preparation method thereof. The raw materials comprise: 300-400 parts of cement; 3-4 parts of NiFe-LDH; 3-4 parts of a water reducing agent; and 100-140 parts of mixing water. The preparation method comprises the following steps: firstly, adding the water reducing agent into the mixing water, and stirring for 3 minutes to form a uniform mixing solution; secondly, adding nickel-iron layered double hydroxides (NiFe-LDH) into the mixed solution, placing the mixed solution in an ultrasonic environment for ultrasonic treatment, and obtaining a mixed aqueous solution in which NiFe-LDH is evenly dispersed; then, putting accurately weighed cement into a stirring pot, then adding the stirring solution, stirring the mixture to be uniform, and pouring the prepared slurry into a mold; and finally, maintaining the sample in an air environment, and removing the mold. The prepared NiFe-LDH cement-based composite wave-absorbing material is low in electromagnetic wave reflectivity, the frequency width with the reflectivity lower than -10 dB is wide, and the NiFe-LDH cement-based composite wave-absorbing material is suitable for electromagnetic wave pollution absorption of multiple frequency bands and has remarkable environmental protection and engineering application value.
Owner:DALIAN UNIV OF TECH

Anti-decoy jamming method for wideband phased array radar based on fractional domain-frequency domain processing

The invention belongs to the field of radar anti-jamming, and discloses a broadband phased array radar anti-decoy jamming method based on fractional domain-frequency domain processing, comprising: obtaining multiple echo signals and target position information of a phased array radar antenna array; Convert all echo signals to the fractional domain, and obtain the interference-plus-noise covariance matrix and the signal-plus-noise covariance matrix of the fractional domain according to the fractional domain covariance matrix; perform convex optimization to obtain the fractional domain steering vector of the target echo signal, according to The fractional domain steering vector of the target echo signal is used to obtain the beamforming weight vector and generate the beamforming signal; the cutoff frequency is f mu The low-pass filter in the fractional domain performs low-pass filtering on the beamforming signal in the fractional domain to obtain the target echo signal in the fractional domain; and performs the inverse FrFT processing in the fractional domain to obtain the target echo signal in the time domain. The invention uses robust narrowband beamforming and fractional-frequency domain low-pass filtering in the fractional domain to effectively suppress broadband decoy LFM interference signals.
Owner:ROCKET FORCE UNIV OF ENG

Wear-resistant and corrosion-resistant ternary boride/stainless steel composite material and manufacturing method thereof

The invention discloses a wear-resistant and corrosion-resistant ternary boride/stainless steel composite material and a manufacturing method, and belongs to the technical field of composite material manufacturing. The wear-resistant and corrosion-resistant ternary boride/stainless steel composite material comprises stainless steel material powder, ternary boride raw material alloy powder and a small amount of forming agent; and the ternary boride raw material alloy powder is manufactured from, by mass, 5wt%-20wt% of ferroboron alloy powder, 5wt%-20wt% of chromium powder, 10wt%-30wt% of molybdenum powder, 10wt%-15wt% of nickel powder, 1wt%-5wt% of copper powder, 1wt%-5wt% of transition metal carbide, 0.5wt%-3wt% of rare earth oxide and the balance of iron powder. According to the wear-resistant and corrosion-resistant ternary boride/stainless steel composite material, the thickness of a ternary boride alloy layer and a stainless steel matrix alloy can be flexibly adjusted; the bonding property after sintering is good; the ternary boride alloy layer has corrosion resistance equivalent to that of the stainless steel matrix; the hardness is high and adjustable; the wear resistance is good; the selectable range of the stainless steel matrix is wide; the manufacturing cost is low; and the operation is simple.
Owner:WUHAN UNIV OF SCI & TECH

Concrete material with electromagnetic wave absorption performance and preparation method thereof

The invention belongs to the field of functional materials, and provides a concrete material with an electromagnetic wave absorption property and a preparation method thereof. The concrete material isprepared from the following raw materials: 200 to 800 parts of portland cement, 15 to 20 parts of a dispersing agent, 3 to 7 parts of a graphdiyne nano-material, and 250 to 350 parts of mixing water.The preparation method comprises the following steps: firstly, adding polyoxyethylene nonyl phenyl ether serving as the dispersing agent into the mixing water for dissolving, adding the graphdiyne nano-material, and stirring uniformly; secondly, adding the mixture into the portland cement, stirring, casting the stirred pulp into a mould, vibrating, compacting, and moulding; finally, detaching themould after a test sample is subjected to standard curing. According to the concrete material with the electromagnetic wave absorption property and the preparation method thereof, the electromagneticwave loss absorption property of the conventional cement-based material can be effectively improved; the reflecting rate of incident electromagnetic wave on the surface of the cement-based compositematerial is reduced; a stealth effect of a large building on the ground on radar detection is beneficially realized; the harm of increasingly complex electromagnetic environment to human bodies can bereduced; the risk of electromagnetic information leakage can also be lowered.
Owner:DALIAN UNIV OF TECH

Medium-long rib prefabricated bottom plate hoisting structure and construction method thereof

PendingCN113802866AInnovation of lifting structureFix damageConstruction materialFloorsLap jointMechanical engineering
The invention discloses a medium-long rib prefabricated bottom plate hoisting structure and a construction method thereof. The medium-long rib prefabricated bottom plate hoisting structure comprises structural beams, wherein the structural beams are arranged side by side, a medium-long rib prefabricated bottom plate is in lap joint with the upper parts of the structural beams, detachable angle steel is arranged at the upper edges of the end faces, which face each other, of the structural beams, the end faces of one side of the detachable angle steel are attached to the end faces of the structural beams, the end faces of the other sides of the detachable angle steel are attached to the lower end face of the medium-long rib prefabricated bottom plate, the detachable angle steel is provided with a jacking structure which is used for tightly attaching the detachable angle steel to the medium-long rib prefabricated bottom plate, and a hoisting structure is arranged on the upper end face of the medium-long rib prefabricated bottom plate. Steel pipes with semicircular holes are additionally arranged in the short edge direction of the prefabricated bottom plate, so that the height of materials in the short edge direction of the prefabricated bottom plate is increased, the bending resistance is improved, the problem of damage caused by hoisting in the short edge direction of the prefabricated bottom plate is effectively solved, and additionally, the width of the produced prefabricated bottom plate is large.
Owner:SHENYANG JIANZHU UNIVERSITY

The end effector of the fruit and vegetable picking robot

The invention relates to an end effector for a fruit and vegetable picking robot. The end effector comprises a grabbing system, a cutting system, a sensing system, a shell and the like; the grabbing system grabs fruits into an inner cavity of the effector by utilizing five rubber rollers rotating at a high speed through high-speed rotation and huge friction force to realize a fruit grabbing action; the cutting system is that a lead screw drives a diamond-shaped frame to perform forward and backward telescopic movement, an electromagnetic mechanism and a saw blade are pushed to perform forward and backward telescopic movement, and a serrated blade is repeatedly driven at a high speed by using the electromagnetic mechanism to cut a branch; the sensing system consists of a pressure sensor, a miniature vision sensor and the like and plays roles in action connection and process control in the processes of the grabbing the fruits and cutting fruit stalks. The end effector provided by the invention has the benefits that with the adoption of novel grabbing, driving and cutting methods, simplicity and reliability are realized, the picking speed of an intelligent picking robot is greatly improved, and the control difficulty and the cost are low. The end effector can meet the demands of a ball-shaped picking robot and is beneficial to the improvement of the picking speed of the fruit picking robot and the practical use and the commercialization of the robot.
Owner:NANCHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products