10results about How to "Meet security requirements" patented technology

The invention provides a patient falling protection robot system based on flexible buffering. According to the method, an environment sensing module, a central processing module, a high-speed moving chassis and a flexible buffering module are included; the environment sensing module is used for sensing user posture information and surrounding environment information; the central processing module is used for processing the posture information of the user and the surrounding environment information and predicting a falling track and a falling position of the user; the high-speed mobile chassis is connected with the flexible buffer module, and the flexible buffer module is moved to a corresponding position based on the predicted tumble track and tumble position of the user; the flexible buffer module is used for performing fall protection on the user; a flexible buffering mechanism is adopted, secondary injuries such as hurting injuries and collision injuries possibly caused by rigid supporting are avoided, and the safety requirement of a human body is better met.

This invention provides a low-density flame-retardant thermally conductive foam powder filler, composed of the following components in parts by weight: 200-300 parts of boron nitride (80-100 micrometers); 200-300 parts of hollow glass microspheres (50-70 micrometers); 200-300 parts of aluminum hydroxide (8-10 micrometers); 200-300 parts of aluminum hydroxide (1-2 micrometers); and 2-4 parts of coupling agent. Its advantages are: 1. Low density: By introducing low-density hollow glass microspheres, the overall density of the filler is effectively reduced, meeting lightweight design requirements. 2. High thermal conductivity: The compound boron nitride forms a highly efficient thermal conductivity network. 3. Excellent flame-retardant performance: The halogen-free flame retardant aluminum hydroxide works synergistically with the hollow glass microspheres. The hollow glass microspheres form a glassy barrier at high temperatures, isolating oxygen and heat, achieving excellent flame-retardant effects. 4. Good dispersibility and compatibility: By modifying the powder surface with silane coupling agent, a "molecular bridge" is formed between the inorganic powder and the organic polymer matrix, which significantly reduces agglomeration, lowers the interfacial thermal resistance, and significantly reduces the viscosity of the system.

The invention discloses an internally-added non-silicon release master batch, a preparation method and a release film with nanoscale roughness, preparation raw materials comprise PET resin I, a non-silicon release agent composition and an antioxidant, and the non-silicon release agent composition comprises polyester wax and oxidized polyethlene wax. According to the invention, polyester wax and oxidized polyethlene wax are compounded, and a release functional phase which is uniformly dispersed in nanoscale and has a stable interface is constructed in a PET matrix through a unique molecular synergistic effect and a processing technology matched with the polyester wax and the oxidized polyethlene wax, so that the fundamental contradiction that the surface of an internally added release film is rough and the release function is difficult to consider at the same time is solved; and meanwhile, silicon migration pollution is fundamentally eradicated, the process is simplified by utilizing an internal addition process, and recycling is facilitated.

The invention provides a manufacturing process of an integrally woven structural fuel tank-skin integrated fuselage, and relates to the technical field of aviation fuel tanks, the manufacturing process comprises the following steps: S1, preparing equipment and materials; s2, weaving and curing for the first time; s3, weaving and curing for the second time; and S4, post-processing and detecting. Through the integrated process of fuel tank mandrel supporting and two-time weaving and curing, a connecting interface and a stress concentration point caused by riveting and cementing in traditional split manufacturing are completely eliminated, the skin and the fuel tank are seamlessly fused to form an integral structure, the problem of connection failure caused by environmental factors is effectively solved, and the service life of the fuel tank is prolonged. The structural integrity, the overall strength and the sealing performance of the integrated fuselage are remarkably improved, and the use requirements of complex working conditions in the aerospace field are met; according to the method, the procedures of multiple times of part separation and solidification, multi-mold adaptation and complex assembly in a traditional process are reduced, the method is matched with accurate parameter control of automatic weaving equipment, dependence on manual layer laying precision and experience is eliminated, and the production period is remarkably shortened.

The application provides an improved tabu search topology optimization method of a marine wind farm power collection system, which is based on the positions of wind turbines to intelligently preliminarily group and sort, to form an initial connection scheme, to connect all the wind turbines in each group with the minimum cost, to calculate the group cable cost, to check whether the lines cross, to impose a penalty in the total cost if the lines cross, to ensure that the scheme is feasible, to compare the current scheme with the historical best, to update the record and intelligently exchange the wind turbine groups to explore a new scheme, to repeat the optimization process until the number of iterations is satisfied, and to finally output a globally optimal topology scheme. The application has the advantages of better optimization effect, significantly improved economy, higher calculation efficiency, stronger engineering practicability, better algorithm robustness, better scheme reliability, high design automation degree and strong auxiliary decision-making capacity.

This invention relates to the field of radar fault technology, and more particularly to a three-dimensional visualization method, system, and electronic device for radar fault information. The method includes: establishing a fault information tree structure for the radar according to the hierarchical inclusion relationship of components in each radar cabinet; marking key points on the three-dimensional structural diagram of the component corresponding to each node in the fault information tree structure, and marking the smallest replaceable unit on the component corresponding to each node in the fault information tree structure, thus obtaining the radar fault information tree; constructing a realistic three-dimensional visualization scene of the radar and the roaming action of each key point based on the radar fault information tree; and combining the realistic three-dimensional visualization scene and the roaming action of each key point with the radar fault information tree to obtain a three-dimensional visualized radar fault model, which can provide error information more quickly and intuitively, guiding operators to quickly and accurately locate faulty components of the equipment, effectively shortening maintenance time.

The application provides a switching frequency jitter inhibition method for charger PFC control, relates to the technical field of jitter inhibition, and performs data monitoring on a switching tube of a charger PFC stage to obtain switching tube monitoring data, performs switching frequency analysis according to the switching tube monitoring data to obtain switching frequency analysis data, performs dynamic adjustment analysis according to the switching frequency analysis data to obtain dynamic adjustment data of a switching tube driving signal, performs adjustment interference analysis according to the dynamic adjustment data to obtain adjustment interference analysis data, performs jitter offset compensation analysis according to the adjustment interference analysis data to obtain jitter offset compensation analysis data, obtains a target switching frequency according to the jitter offset compensation analysis data, performs closed-loop control, and obtains closed-loop control information. The application realizes full-process and full-range inhibition of switching frequency jitter, avoids potential safety hazards, such as PFC circuit instability and power factor reduction, caused by frequency jitter from the root, and guarantees normal operation of the charger PFC stage.

The application relates to the technical field of building materials, and particularly discloses a kind of nanometer materials for wall cable trench cavity water stop and a preparation method thereof, which comprises the following raw materials in parts by weight: sebacic acid 5-10 parts, acrylic acid 50-70 parts, olivine powder 10-20 parts, magnesium aluminum silicate 10-20 parts, calcium acrylate 20-30 parts, aluminate coupling agent 1-2 parts, curing agent 1-2 parts, coagulant 1-2 parts, water reducing agent 1-2 parts, modified additive 1-2 parts, deionized water 30-40 parts, ammonium persulfate 0.5-1 part. The modified additive has phosphorus, silicon, fluorine elements and long-chain alkyl on the molecular structure, and the modified additive and other raw materials significantly improve the flame retardance, compressive strength, chemical stability and waterproof performance of the nanometer material for wall cable trench cavity water stop through synergistic effect. Meanwhile, the modified additive also reduces the agglomeration phenomenon among raw materials, ensuring that the nanometer material has good strength and water plugging effect.

The invention discloses a method for reducing train vibration hazards and monitoring potential diseases through a spring foundation. The method comprises the steps that S1, the limit value of vertical displacement during train running is determined; s2, the rigidity coefficient of the spring foundation is designed; s3, spring units, reinforced concrete floating slabs, sleepers and rails are sequentially installed on the tunnel base; s4, multiple groups of data acquisition modules are mounted below the reinforced concrete floating slab at intervals in the longitudinal direction of the tunnel; s5, train vibration frequency is collected through a data acquisition module, a database is established, vibration frequency distribution of different sections during train operation is analyzed, and damping of a spring foundation system is increased; and S6, establishing a machine learning platform based on simulation test data, establishing association between the vibration frequency and tunnel diseases, and monitoring potential tunnel diseases through actual monitoring data. A traditional rigid foundation is changed into the flexible foundation, vibration loads generated when a train runs are absorbed and reduced through the flexible foundation, and then damage to a tunnel structure is reduced.

The invention belongs to the technical field of synthetic biology and genetic engineering, and particularly discloses an anti-leakage Cre recombinase expression cassette and application thereof in pichia pastoris gene editing. The expression cassette is composed of lox71-selection marker-sh blele-Cre coding sequence (SEQ ID NO: 1)-TetO manipulation sequence-lox66, wherein the Cre coding sequence (SEQ ID NO: 1) is optimized by pichia pastoris codon and is introduced into escherichia coli rare codon, and IIS type restriction enzyme sites such as PaqCI, BsmBI, BsaI, AarI and the like are completely eliminated; the gene is cloned to a pPICZ skeleton and introduced into an escherichia coli host of chromosome integrated tetR, Cre leakage expression can be thoroughly inhibited in a large-scale amplification stage, and recombination toxicity and plasmid mutation are avoided. An'upstream homologous arm-expression cassette-downstream homologous arm 'edit box can be obtained through one-step assembly by using Golden Gate, and construction is completed within 3 days; electrically transforming pichia pastoris after linearization, and integrating efficiency gt for the first time; according to the method disclosed by the invention, the content of the resistance marker is 70%, the resistance marker removal rate is 100% through methanol-induced Cre self-deletion, and only one lox71 / 66 heterozygous site is reserved. According to the invention, the problems that the traditional Cre / loxP system is easy to mutate in escherichia coli and low in efficiency in yeast are solved, and an efficient and safe universal gene editing tool is provided for industrial microbial metabolism engineering.