131results about How to "Avoid negative effects" patented technology

This invention relates to the field of polymer material synthesis technology, specifically to a modified PVB resin and its preparation method. The invention introduces a fluorinated acetal monoaldehyde derivative containing fluorine into the PVB resin. This derivative is mixed with n-butyraldehyde and glyoxal, thereby undergoing an acetalization reaction with the 1,3-o-diol structure of the PVB molecular chain, incorporating the fluorinated side link into the PVB molecular chain. Utilizing the high electronegativity and high C-F bond energy of fluorine atoms, it shields against the intrusion of external corrosive media, inhibits oxidative yellowing, and improves weather resistance. Furthermore, the invention introduces glyoxal as a crosslinking agent, containing dialdehyde groups, which can react between adjacent polyvinyl alcohol segments, causing slight crosslinking between the originally linear PVB resin segments, improving the resin's shielding performance, further reducing the intrusion of external corrosive media, and enhancing the stability of the PVB resin.

The application provides a combined guide vane and a ship, which achieves the basic requirement of improving the flow field around the stern and propeller and improving the propeller efficiency, reduces the stress on the structure by arranging the guide vanes in the axial direction, increases the energy saving effect, and avoids the negative influence of the axial misalignment arrangement on the propeller pulsating pressure by aligning the end. In addition, by limiting the circumferential length of the guide vane, the resistance generated by the device is small, that is, the resistance and structural performance of the energy saving device are improved; through the combination of various schemes of the guide vane, the guide vane, the connecting piece and the flow guide fin, and the establishment of the design method matched with each combination of the application, the optimal energy saving effect can be achieved for different ship types and navigation conditions, the effective complementation among multiple structures is realized, and the universality is strong.

This invention discloses a foreign matter collection device and method for overflow-type down-drawing substrate glass furnaces, belonging to the field of flat glass manufacturing technology. The device provided by this invention includes a fixed tube, a collection tube, and a rotary drive mechanism. The collection tube is hinged to the inner end of the fixed tube within the furnace and consists of two symmetrical U-shaped grooves connected by a central rotating hinge shaft. The rotary drive mechanism drives the collection tube to rotate, so that when the central rotating hinge shaft faces downwards, the two grooves automatically open under gravity to form a U-shaped receiving groove, and when facing upwards, they automatically close to form a sealed circular tube. Using this invention, the process of removing foreign matter from the furnace for cleaning can avoid secondary pollution or safety accidents caused by scattering. The entire switching process is completed online outside the furnace without interrupting production or opening the furnace, completely solving the problems of large production losses and severe disturbances to the furnace temperature and airflow fields caused by the need to stop production for cleaning in traditional devices.

The invention relates to a trusted security traffic monitoring system based on an anti-quantum key management framework, and relates to the technical field of smart city traffic, and the system comprises an initialization module which is used for carrying out the initialization processing of a cloud platform, an edge gateway and a camera node; the data acquisition and transmission module is used for acquiring and encrypting monitoring data based on the initialized camera node, and transmitting the encrypted monitoring data to the cloud platform through the edge gateway in a preset data transmission mode; wherein the preset data transmission mode comprises a cross-gateway area transmission mode and a same-gateway area transmission mode; and the data detection module is used for deleting or replacing the scene of the corresponding node when the edge gateway or the camera node shows a malicious behavior or the equipment is aged. According to the method, a key system is constructed through an encryption and decryption algorithm, so that the key management framework oriented to edge computing has quantum aggression resistance, and the security of a city monitoring system in a traditional scheme is improved.

The utility model discloses a heat distribution pipeline connecting structure which comprises a first pipe body and a second pipe body, spherical connecting pieces are coaxially and symmetrically arranged at the end of the first pipe body and the end of the second pipe body, and the outer surface of each spherical connecting piece is of a spherical crown-shaped structure. A short pipe is arranged between the first pipe body and the second pipe body, spherical connecting grooves matched with the spherical connecting pieces are formed in the two ends of the short pipe, the inner surfaces of the spherical connecting grooves are spherical surfaces with the curvature radius consistent with the curvature radius of the outer surfaces of the spherical connecting pieces, and the spherical connecting pieces are embedded into the spherical connecting grooves to form a multi-degree-of-freedom rotation pair. The combined structure of the spherical connecting piece and the split type short pipe is adopted, the multi-degree-of-freedom motion characteristic of a spherical pair is utilized, axial stretching, transverse dislocation and torsional composite displacement caused by seismic waves can be effectively absorbed, and the fracture risk caused by pipeline stress concentration is avoided. The split type short pipe is quickly assembled through bolt fastening, and the strict requirement of traditional interference fit for the installation technology is eliminated.

The embodiment of the application provides a method for converting a knowledge graph into a natural language large model training sample and related equipment, and belongs to the technical field of artificial intelligence. The method comprises the following steps: selecting a key anchor point from the knowledge graph based on a graph centrality measurement index; taking a key anchor point pair as a starting point and an ending point, extracting a symmetric element path connecting the two, and constructing a subgraph; generating multi-perspective paths for the same core entity through an anchor point switching mechanism; converting subgraph information into a (instruction, output) sample pair conforming to the instruction fine-tuning paradigm by using a structured information template, a path information template and a metadata enrichment template; and fine-tuning a large language model by using the generated corpus. By introducing the symmetric element path and the multi-dimensional instruction template, the embodiment of the application realizes semantic preservation and structured mapping of complex relationships in the knowledge graph, and effectively improves the knowledge understanding, reasoning and generalization ability of the large model in a specific field such as the power secondary equipment field.

This invention provides a wireless communication link selection method and a half-duplex communication system for selecting multiple physical wireless communication links between a transmitter and a receiver in a half-duplex communication system. Both the transmitter and receiver are equipped with switching switches and antennas. The method includes: the transmitter and receiver synchronously and sequentially switching their respective antennas into working states according to their pre-stored switching switch timing sequences; when any transmitter antenna and any receiver antenna are simultaneously in working states, a wireless communication link is formed, and each wireless communication link is traversed at least once; during the transmission period of any wireless communication link, the receiver transmits unidirectional heartbeat packets or time-division bidirectional heartbeat packets with the transmitter through the current wireless communication link; the transmitter and / or receiver that receives the heartbeat packet selects the optimal wireless communication link from the multiple wireless communication links based on the signal strength and packet error rate during the heartbeat packet transmission process.

The portable graphene seedling raising shed has the advantages that the graphene composite support rod is adopted, the support rod is used as a heating device while supporting, the support rod itself is changed into an efficient and uniform heating body, stable and controllable heat supply is provided for the inside of the seedling raising shed, the spraying assembly arranged in the shed is convenient for watering and realizes intelligent control, the portable graphene seedling raising shed can be used for small-scale and family type seedling raising and cultivation in winter, has the characteristics of being light, capable of being quickly folded or stretched, and convenient for users to carry, transport and quickly deploy at different sites.

The utility model provides a vibrating diaphragm, which belongs to the technical field of vibrating diaphragms, and comprises at least one bonding layer, at least one side of each bonding layer is provided with a conductive layer, the connecting surface of the conductive layer and the bonding layer is a roughening treatment surface or a surface activation treatment surface, and the bonding layer and the conductive layer are in hot-pressing composite connection or bonding connection. According to the utility model, the bonding layer and the conductive layer are directly compounded, so that the requirement of bonding strength is met, the process is simplified, the problem of insufficient thickness of a magnetron sputtering coating can be effectively solved, and the negative influence of a glue bonding process on the compliance of the vibrating diaphragm can be avoided; therefore, the light weight of the planar diaphragm structure, the high sensitivity of the performance and the simplification of the manufacturing process are realized.

The application provides a wine aging method, and belongs to the technical field of wine brewing, which comprises the following steps: adjusting the sulfur content of separated base wine to obtain base wine with adjusted sulfur content; sterilizing oak barrels by steam fumigation; filling the base wine with adjusted sulfur content into the sterilized oak barrels to obtain full oak barrels; aging the full oak barrels, the humidity of the aging environment is 65RH%-75RH%, and the temperature of the aging is adjusted according to the season, and the full oak barrels are regularly adjusted in sulfur content during the aging process. The wine aging method provided by the application can regularly adjust the sulfur content of the wine liquid once every 28 days during the aging process, accurately supplement the content of key components in the wine liquid which is reduced due to natural consumption, and avoid the concentration of the components being lower than the appropriate interval of aging.

This utility model discloses a waterproof fiber cement pressure board, specifically relating to the technical field of fiber cement pressure boards. It includes a board body with a front waterproof membrane bonded to its front side and a rear waterproof membrane bonded to its rear side. A pressure groove is provided on the rear side of one side of the board body, and a receiving groove is provided on the front side of one side of the board body. Multiple connecting holes are provided through the board body near the pressure groove, and multiple insertion posts are fixedly installed on the receiving groove near the pressure groove. Waterproof grooves are provided on both the side of the pressure groove near the receiving groove and the side of the receiving groove away from the pressure groove. This utility model, through its structure including pressure grooves, receiving grooves, water-blocking membranes, and sealing strips, achieves good waterproofing. After installation, the water seepage at the joints is well controlled, preventing water leakage problems and thus avoiding negative impacts on the performance of the fiber cement pressure board. Therefore, the actual performance of this utility model is quite ideal.

This utility model discloses a battery pack housing, a battery pack, and an electrical device. The battery pack housing includes a casing and a cover. The casing has a first connecting portion at its open end, and a magnetic field groove is provided on the first connecting portion. The inner and outer walls of the magnetic field groove have opposite magnetic poles facing each other. The magnetic field groove is configured with space for filling with a magnetic fluid and for accommodating a magnetically conductive sheet. The cover has a second connecting portion adapted to the first connecting portion at its connecting end. By providing a magnetic field groove on the first connecting portion, with the inner and outer walls of the groove having opposite magnetic poles facing each other, the battery pack housing allows for filling the magnetic field groove with a magnetic fluid during battery pack production and maintenance, achieving a seal through the magnetic fluid. The battery pack includes this battery pack housing, and the electrical device includes the aforementioned battery pack, achieving the same beneficial effects.

This invention discloses an environmentally friendly plasticizer using modified lignin as a carrier, a rubber composition, and a method for preparing the same, relating to the field of rubber processing technology. The environmentally friendly plasticizer using modified lignin as a carrier, by weight, comprises the following components: 50 parts modified lignin, 25 parts plasticizing active ingredient, 8 parts dispersant, 5 parts anti-aging agent, and 3 parts stabilizer. The modified lignin is a lignin oligomer containing ester, acetyl, and ether cross-linked structures, with a weight-average molecular weight of 800-1200 Da, a dispersion coefficient ≤1.5, and a carboxyl content ≤0.2 mmol / g. This invention successfully overcomes the technical defects of existing plasticizer carriers, such as high toxicity, difficulty in degradation, and poor compatibility with polymer matrices, providing an environmentally friendly plasticizer using modified lignin as a carrier. This technical solution achieves the dual goals of high-value utilization of lignin and greening of the plasticizer product.

The invention discloses an idling start-stop control method based on navigation traffic information, which comprises the following steps: when a vehicle is in a navigation state, a start-stop forbidding judgment module acquires traffic information of an intersection in front of a planned driving path in real time, including a signal lamp state, lamp changing remaining time and a distance to a stop line; when the vehicle approaches the target intersection, combining the vehicle state and the traffic information, and generating a forbidding request signal of the idle start-stop system through judgment logic; the power control execution module executes a final control action for forbidding automatic flameout of the engine based on the forbidding request signal. According to the invention, the problems of unnecessary start and stop and influence on driving smoothness and energy consumption caused by incapability of accurately associating path-related signal lamps and passing scenes in the prior art are solved, intelligent cooperative control of the idle speed start and stop system based on navigation information is realized, and vehicle energy consumption is optimized while driving experience is improved.

The utility model relates to the field of nut machining equipment, and discloses an efficient nut tapping machine which comprises a base, a first motor is arranged in the base, the output end of the first motor is fixedly connected with a first rotating column, the outer wall of the first rotating column is fixedly connected with a fixing plate, and the inner wall of the fixing plate is fixedly connected with a clamping column. A second rotating column is rotatably connected to the inner wall of the base, a clamping plate is fixedly connected to the outer wall of the second rotating column, a partition plate is rotatably connected to the outer wall of the second rotating column, a chassis is rotatably connected to the outer wall of the second rotating column, a rotating plate is rotatably connected to the upper surface of the chassis, and a conveying belt assembly is rotatably connected to the outer wall of the partition plate. A first motor is started to drive a first rotating column to drive a fixing plate and a clamping column to rotate, a clamping plate and a second rotating column are driven to rotate, a rotating plate is driven to convey nuts, the nuts are taken to a discharging barrel by the rotating plate after being tapped, rapid feeding and discharging of the nuts are achieved, and the working efficiency is improved.

The invention relates to a refining method for reducing and controlling a plasticizer and 3-chloropropanol ester in camellia oil, and aims to effectively control the plasticizer, the 3-chloropropanol ester and glycidyl ester in the camellia oil and maintain nutritional ingredients and natural flavor of the camellia oil. The method comprises the steps of acidification degumming, alkali refining deacidification, water washing, decoloration, dual-temperature deodorization, low-temperature adsorption and the like, and particularly, the vacuum degree and the temperature are finely adjusted in the deodorization process, so that control over a plasticizer, 3-chloropropanol ester and glycidyl ester is effectively considered.

The utility model relates to the technical field of photovoltaic prefabricated cabins, in particular to a photovoltaic prefabricated cabin with a heat dissipation function, which comprises a base, a cabin body is mounted at the top of the base, a cabin door is hinged to one side of the cabin body, a door handle is mounted on one side of the cabin door, and a cover plate is mounted at the top of the cabin door. A temperature sensor is installed in the middle of the lower surface of the cover plate, a buzzer alarm is installed at one end of the top of the cover plate, frame bodies are installed at the two ends of the upper surface of the cover plate, net plates are installed at the top ends of the inner walls of the frame bodies, heat dissipation assemblies are installed on the two sides of the cabin body, and each heat dissipation assembly comprises a frame installed on the two sides of the cabin body. According to the improved photovoltaic prefabricated cabin, the capacity of stably and continuously discharging heat in the cabin body is provided, the working efficiency of equipment is improved, an alarm can be given in time to remind workers when the temperature in the cabin body is abnormal, and the situation that internal electric appliances are broken down or damaged due to overheating is reduced.

This invention discloses a smelting method for large-size Fe-based superalloys for gas turbines, comprising two steps: casting metal raw materials into 710mm electrode rods in a vacuum induction furnace, and then remelting the electrode rods in a vacuum arc remelting furnace to produce 810mm steel ingots. This invention employs a combined vacuum induction melting and vacuum arc remelting (VIM+VAR) process, which effectively controls Ti element burn-off to ensure its content meets standards, and avoids excessive formation of Ti-based carbonitrides, fundamentally mitigating the negative impact on the purity of the molten steel.

The utility model relates to the polycrystal silicon production technical field especially, and it is a kind of novel silicon core structure, silicon core subassembly and reduction furnace structure, the silicon core adopts whole tapering structure or ladder type structure;The whole tapering structure specifically refers to: from the top to bottom of silicon core, the cross section size of silicon core continuously decreases along the axial direction;The ladder type structure specifically refers to: from the top to bottom of silicon core, the silicon core includes first silicon core section and second silicon core section connected in turn, and the cross section size of first silicon core section is greater than the cross section size of second silicon core section. Through the novel silicon core structure, silicon core subassembly and reduction furnace structure, can effectively avoid the abnormality such as molten silicon, black inclusion of silicon core in the growth process.

This invention relates to a Cr and Br dual-element doped polyanionic sodium-ion battery cathode material, sodium iron phosphate pyrophosphate, its preparation method, and its application, belonging to the field of sodium-ion battery technology. The general chemical formula of the cathode material of this invention is: Na₄Fe₂O₃. 3‑x Cr x (PO4)2P2O7Br y Where 0 < x < 0.5, 0 < y < 0.7; the precursor wet gel is obtained through a sol-gel process, dried, and then sintered. This invention relates to a Cr- and Br-doped polyanionic sodium-ion battery cathode material, sodium iron phosphate pyrophosphate. The Cr dopant enhances bulk stability, while the gradient distribution of Br forms a fast ion conduction layer on the surface. The two elements together improve the rate capability and cycle performance of the sodium-ion battery. This provides a modification strategy of significant reference value for cathode materials that suffer from low discharge specific capacity and poor cycle performance at high rates due to electron conductance differences.

This invention discloses a powder coating and its preparation method, belonging to the field of powder coating technology. The powder coating comprises a composite filler with a core-shell-whisker structure. The composite filler includes: a core layer, which is a one-dimensional inorganic thermally conductive material; an intermediate layer, which is composed of polydopamine and coated on the outer surface of the core layer; and an outer shell layer, which is composed of a reactive elastomer and chemically grafted onto the outer surface of the intermediate layer. This invention also discloses the preparation method of the powder coating and its application in electrical insulation components. By constructing a core-shell-whisker structure composite filler and using polydopamine as the intermediate layer to chemically graft reactive elastomer onto the surface of a one-dimensional inorganic thermally conductive material, this invention achieves a synergistic improvement in mechanical properties, thermal conductivity, and insulation properties, and endows the coating surface with self-healing scratches.

The application discloses a kind of network type flexible direct system virtual impedance coordination's adaptive current differential protection method, system, equipment and medium, it is related to flexible direct current transmission relay protection technical field.At present, in network type flexible direct system, the problem that sensitivity is insufficient due to the limited output current of converter station.This application includes synchronously collecting the current phasor of the protected line both ends and the effective value of converter station output current;According to the effective value of output current, the virtual resistance parameter of converter station control inner loop is adaptively adjusted;Based on virtual resistance parameter, the adaptive braking coefficient is calculated, so that the braking coefficient is inversely proportional to virtual resistance;Differential current and braking current are calculated, whether differential current is greater than the product of braking coefficient and braking current and action threshold value at the same time is judged, if meet, then determine intra-zone fault and trip.This technical scheme realizes the adaptive improvement of sensitivity at fault, reliable and no misoperation at normal time, without additional judgment link, fast response and easy to realize.

The invention discloses a pipeline assembly, a cleaning method, a cleaning device and cleaning equipment, the pipeline assembly is applied to the cleaning equipment, an air channel allowing airflow to pass through is formed in the pipeline assembly, the pipeline assembly comprises a flexible part, and the flexible part can be driven to deform in the direction pointing to the interior of the air channel or the direction away from the interior of the air channel so as to adjust the caliber of the air channel. Therefore, the airflow velocity is controlled. The pipeline assembly can drive the flexible part to deform in the working process to achieve caliber adjustment of the air duct, when large-particle garbage is cleaned, the flexible part can be driven to deform in the direction pointing to the interior of the air duct, the caliber of the air duct is reduced, the air speed is increased, and the problems that the large-particle garbage moves slowly and flows back are solved; when the cleaning device is applied to small-particle garbage cleaning, the flexible part can be driven to reset to the initial position, the caliber of the air duct is increased, energy consumption and noise are reduced, dual optimization of the performance and energy efficiency of the cleaning device is achieved, and user experience is improved.

This invention relates to the fields of artificial intelligence and machine learning technology, and discloses a method and system for predicting the distribution of cadmium content in arable land soil based on machine learning. The method includes: acquiring multi-source environmental geographic data and measured cadmium content data; performing spatial alignment and scale unification processing; constructing a confounding factor identification model based on causal inference to screen true driving factors with causal relationships to cadmium content; inputting the true driving factors into an ensemble learning model to train the prediction model, and generating a high-resolution continuous spatial distribution map. The system comprises five modules: multi-source data acquisition, data preprocessing, causal feature screening, model training and prediction, and spatial mapping. This invention improves prediction accuracy, generalization ability, and interpretability by combining causal-guided feature screening with ensemble learning, providing scientific support for the safe use of arable land and pollution prevention and control.

The present application provides a touch display screen, comprising: a display panel; a touch device located at the light emitting side of the display panel, and the touch device has a touch surface, comprising: a light emitting component for providing at least positioning light and at least high-energy light; a light receiver for detecting the light change amount of the positioning light on the touch surface due to touch, for determining the position of the touch on the touch surface; a biological sensor for determining whether a living body is close to the touch surface; and a controller for driving the light emitting component to selectively provide the positioning light and / or the high-energy light to the touch surface according to the judgment of the biological sensor. The present application can provide the ultraviolet light sterilization function of the touch panel while preventing the user from being negatively affected by the ultraviolet light during the touch operation, and saving the power consumption of the touch display screen.

The application discloses a kind of empty suspension type magnetic stirring assembly to solve the problem of insufficient sealing effect of driving mode in the field of cell culture or biopharmaceutical, comprising: sealed shell assembly;First magnetic rotating part, in the sealed shell assembly;Second magnetic rotating part, in the sealed shell assembly outside, second magnetic rotating part is equipped with stirring paddle;Driving assembly, connect the first magnetic rotating part and can drive the first magnetic rotating part rotation, the first magnetic rotating part rotation can drive the second magnetic rotating part rotation.The power component and transmission component of stirring part are better isolated from the space in the liquid storage container by the magnetic force of the first magnetic rotating part to drive the second magnetic rotating part, avoid the problem of insufficient sealing effect of existing mechanical driving mode.

This invention relates to the field of content detection technology, and discloses a method and system for detecting calcium carbonate content in artificial quartz based on X-ray diffraction. The method includes acquiring X-ray diffraction pattern data of an artificial quartz sample; pre-setting multiple characteristic diffraction peaks of quartz and calcium carbonate in the pattern data, calculating initial independence coefficients, and selecting an initial target peak; calculating structural complexity parameters; determining the analytical diffraction angle window; recalculating the independence coefficients, selecting a reference peak and a target peak; calculating the asymmetric distortion coefficient; fitting the peak profiles of the target peak and the reference peak to obtain their respective main peak integral areas; calculating the corrected integral area; and calculating the calcium carbonate content based on the main peak integral area of ​​the target peak or the corrected integral area and the main peak integral area of ​​the reference peak. This invention overcomes the negative impact of peak overlap and peak distortion on quantitative analysis by optimizing peak selection, integration intervals, and peak shape correction, thereby improving the accuracy of calcium carbonate content detection.

A heterovalent copper-doped lithium cobalt phosphate cathode material and its preparation method are disclosed, belonging to the technical field of lithium-ion battery cathode materials. The general chemical formula of the heterovalent copper-doped lithium cobalt phosphate cathode material is LiCu. x Co 1‑x PO4, where 0 < x ≤ 0.1; it has an orthorhombic Pnma olivine structure, Co 2+ The cobalt phosphate material occupies the 4c ​​site of the CoO6 octahedron; copper is doped into the lattice as monovalent copper, and heterovalent cobalt sites are substituted. The method is as follows: First, lithium, copper, cobalt, and phosphorus sources are mixed uniformly to obtain a precursor mixture; second, the precursor mixture undergoes a high-temperature solid-state reaction under a protective atmosphere, followed by calcination at 600-800℃ for 4-8 hours; finally, it is cooled to room temperature to obtain the cathode material. This invention successfully activates the electrochemical activity of lithium cobalt phosphate, significantly improving the initial charge-discharge capacity compared to the pure phase; the heterovalent substitution-induced cobalt valence state change helps optimize the electronic structure of the material and improve conductivity; the preparation process helps reduce side reactions and impurity phase formation, is simple, has good reproducibility, and is easy to scale up industrially.

The invention discloses an asynchronous federated continuous learning method for a large model, which belongs to the field of federated learning and continuous learning, is applied to a client, and comprises the following steps: receiving an initial model parameter of a global model issued by a server and a global feature extraction module, and performing feature representation on local service task data based on the module, constructing a corresponding feature prototype and a feature covariance statistic; uploading the feature prototype and the feature covariance statistics to a server in an asynchronous mode to perform asynchronous federal fusion, and updating global feature statistics; and receiving the global feature statistics after the server fuses and updates, wherein the global feature statistics are used for local decision modeling of subsequent tasks. Through the asynchronous federal aggregation strategy, incremental feature knowledge from different financial institutions and different task stages can be continuously integrated, the problem of historical knowledge forgetting is effectively relieved, and the stability and consistency of global feature representation in the long term evolution process are kept.