228results about How to "Avoid demand" patented technology

The invention provides a frequency converter IGBT junction temperature prediction method based on a neural network, and relates to the technical field of neural networks, and the method comprises the steps: obtaining a circuit structure and operation parameters of a subway traction transmission system, and constructing a dynamic thermal network model; establishing a simulation working condition set, performing simulation to acquire a real-time parameter set, and establishing a sample data set after preprocessing; a neural network with multiple input layers is established, training is executed to construct an IGBT junction temperature prediction model, each input layer is mapped with a feature extraction sub-network, feature extraction is performed by using the feature extraction sub-networks, and neural network training is performed according to a feature extraction result; and performing data prediction by using the IGBT junction temperature prediction model, and establishing a junction temperature time sequence. The technical problems that dynamic changes of the junction temperature under complex operation conditions are difficult to capture in the prior art, and particularly when load fluctuation is large or multiple working conditions are switched, prediction errors of a traditional model are remarkably increased, and consequently the accuracy of junction temperature prediction is insufficient are solved.

The invention belongs to the technical field of intelligent control, and discloses a building energy-saving intelligent integrated control system and method. Comprising the steps of collecting building comprehensive data of a building internal space area; preprocessing the building comprehensive data to obtain standard building data; establishing a building dynamic model according to the standard building data, and predicting by using the dynamic model to obtain an energy consumption change curve and a comfort change curve of the internal space area of the building in a future fixed time period; solving to obtain a series of optimal control strategy sequences by taking the energy consumption change curve and the comfort change curve of the internal space area of the building in the future fixed time period as constraints; the optimal control strategy sequence obtained through solving is distributed to all actuators, and integrated intelligent control over heating equipment, refrigeration equipment, ventilation equipment, illumination equipment and the like is achieved; not only is the energy-saving level of the building improved, but also a comfortable environment is created for the indoor space, and the comprehensive performance of the building is comprehensively enhanced.

The invention discloses a 2D government affair digital human real-time interaction method and system based on an AI painting technology, and the method comprises the steps: making a digital human image based on a modeling mode combining AI painting and a Live2D technology; acquiring an audio input by a user in real time, and identifying the audio input by the user to obtain an audio identification text and a reply text; according to the reply text, synthesizing and outputting a result audio based on a half-stream speech synthesis method of dependency syntactic analysis; and performing mouth shape synchronous real-time driving and audio broadcasting of the digital human image on the manufactured digital human image based on the result audio. According to the invention, the low-cost construction and deployment of the digital human are realized based on the combination of AI drawing and Live2D technology; when system deployment is carried out on the digital people, a semi-streaming speech synthesis scheme based on dependency syntactic analysis is adopted, and the interaction real-time performance and fluency of government affair digital people belonging to service digital people are improved.

The invention relates to the technical field of artificial intelligence, and provides a text generation method and device, electronic equipment and a readable storage medium. The method comprises the following steps: receiving a question text, and vectorizing the question text to obtain a question vector; obtaining each document vector in a preset document vector library of a field corresponding to the question text, calculating a similarity score between each document vector and the question vector, and obtaining a related document based on the similarity; matching degree scores of semantic matching degrees of the related documents and the question text are obtained, the related documents are sorted according to the sequence of the matching degree scores from high to low, the related documents are spliced according to the sorting sequence, and a background text is obtained; and generating cue words based on the background text and the question text, and inputting the cue words to the large language model, so that the large language model generates an answer text. Vector similarity calculation and the semantic matching degree are combined, the retrieval precision is improved, and then the accuracy of the answer text generated by the large language model is improved.

The invention provides an SOFC (solid oxide fuel cell) stack and a method for converting methane into low-carbon hydrocarbon and generating electric energy, the SOFC stack comprises a plurality of stack basic units, each cell stack basic unit comprises an electrolyte, a cathode and an anode which are arranged on two sides of the electrolyte, a cathode current collecting layer and an anode current collecting layer which are respectively arranged on the cathode and the anode, and a current collecting connector for connecting the cathode and the anode of the adjacent cell stack basic unit; wherein the collector connector is made of martensitic stainless steel, and chemical modification layers are arranged on the cathode side and the anode side of the collector connector; and a methane oxidative coupling catalyst is loaded on the chemical modification layer on the anode side of the current collecting connector. According to the invention, the chemical modification layer is formed on the surface of the collector connector made of martensitic stainless steel, and the methane oxidative coupling catalyst is loaded on the chemical modification layer on the anode side of the collector connector, so that the formation of carbon deposition on the surface is effectively inhibited, and the yield of low-carbon hydrocarbon products generated by methane conversion is improved.

The invention discloses a waveguide coaxial filter, a design method thereof and a low-temperature receiver. The waveguide coaxial filter comprises a waveguide input port used for inputting an electromagnetic wave signal; the waveguide filtering structure is used for transmitting the electromagnetic wave signal in a waveguide transmission line mode and filtering a frequency spectrum signal with a set frequency in the electromagnetic wave signal; the waveguide coaxial conversion structure is arranged in the output port surface cavity of the waveguide filtering structure and is used for realizing mode conversion and impedance matching of the waveguide transmission line and the coaxial transmission line so as to convert a waveguide transmission line mode signal into a coaxial transmission line mode signal; and the coaxial output port is used for being connected with a coaxial transmission line so as to output a coaxial transmission line mode signal. A waveguide filtering structure and a waveguide coaxial conversion structure are integrally designed, so that the insertion loss performance is optimized on the whole, the size and weight of the device are greatly reduced, interconnection of systems and stability of the system structure are facilitated, and the low-temperature receiving device can be applied to low-temperature receivers in the aerospace field.

The invention discloses a carbon nanotube mechanical property analysis method based on machine learning molecular dynamics, and relates to the technical field of carbon nanotube mechanical property analysis. The diameter, the length and the defect proportion serve as variables to construct a structure parameter library; the temperature and the strain rate serve as supplementary variables to establish a tensile model parameter library; carrying out molecular dynamics simulation analysis on tensile mechanical properties; drawing a stress-strain curve and extracting key parameters; establishing a parameter association library between the structural parameters and the mechanical properties by using a machine learning method; selecting a machine learning algorithm to predict mechanical properties; and extracting a function relationship through the trained machine learning model to establish a fitting function. Starting from the relationship between different diameters, lengths, defect proportions, temperatures and strain rates and the mechanical properties of the carbon nanotubes, the optimal structure parameters of the carbon nanotubes under specific conditions are obtained through machine learning, the calculation amount is greatly reduced, the experiment cost is saved while the effectiveness of the model is ensured, and the research efficiency is remarkably improved.

The invention aims to provide a combustion chamber casing pressure bearing capacity test method, which comprises the following steps of: obtaining casing pressure resistance and overpressure load of a conformity verification test, obtaining a temperature correction coefficient, obtaining a minimum material performance correction coefficient, and obtaining a most unfavorable geometric dimension correction coefficient, and calculating a final test pressure load according to the product of the case pressure-resistant and overpressure pressure load, the temperature correction coefficient, the minimum material performance correction coefficient and the most unfavorable geometric dimension correction coefficient. Through the test method, the airworthiness conformity of the combustion chamber casing can be verified.

The invention discloses a porous static pressure gas radial bearing based on piezoelectric shunt damping, and belongs to the technical field of static pressure gas bearings. Comprising a bearing shell, a bearing sleeve and a porous throttler which are arranged in the bearing shell in the axial direction, and a piezoelectric shunt damping module which is arranged between the bearing shell and the bearing sleeve and is axially fixed through a check ring. Wherein the piezoelectric shunt damping module is formed by connecting a force amplifier, a piezoelectric ceramic stack, a pre-tightening pressing block, a pre-tightening screw, a steel ball and a locking nut; the force amplifier is of an axisymmetric structure composed of two trapezoidal connectors, four thin-wall beams and two end plates. The piezoelectric shunt damping module is arranged in the bearing, vibration mechanical energy of the bearing sleeve is converted into electric energy through the piezoelectric ceramic stack, and net damping is provided for the bearing by consuming the electric energy generated by the piezoelectric ceramic stack through the external shunt resonance circuit, so that the amplitude of the rotor relative to the bearing at a high rotating speed is reduced; the high-speed stability of the bearing is improved.

The invention discloses a preparation method of a sodium ion positive electrode binder, which is characterized in that a carboxyl-containing olefine acid monomer is introduced into a vinylidene fluoride structure, so that a carboxyl group is embedded into the molecular structure of the binder, and the dual functions of neutralization and binding are realized. According to the method, through emulsion or suspension polymerization, the prepared binder can gradually neutralize alkaline residues of the sodium ion positive electrode material in the preparation of the positive electrode slurry, and the problems of acid-base imbalance and impurity residues caused by traditional additional organic acid are avoided, so that the jelling phenomenon is effectively inhibited. The embedded design simplifies the formula, improves the material purity, and significantly improves the fluidity and coating consistency of the slurry. In addition, the introduction of carboxyl improves the bonding performance of the binder, reduces the use amount of the binder, and increases the filling proportion of the active material, thereby improving the specific energy of the battery, reducing the internal resistance, enhancing the peeling strength of the pole piece, prolonging the cycle life of the pole piece, and showing excellent stability in the application of the sodium ion battery.

The invention relates to the technical field of intelligent teaching, and particularly provides an interpretable exercise recommendation method and system based on relation attributes, and the method specifically comprises the following steps: processing the interaction data between a user and an exercise in an existing data set, building a user-exercise knowledge graph according to the relation between the data, and carrying out the initialization; inputting the initialized user-exercise knowledge graph instances into a TransE model for training to obtain embedded vectors of trained entities and relationships; and performing user exercise recommendation on the user-exercise knowledge graph, formalizing the user exercise recommendation into a Markov decision process, and performing multi-step path reasoning on the user-exercise knowledge graph by constructing a reinforcement learning system to realize user exercise recommendation. According to the method, a more accurate user portrait is realized, the accuracy of the recommendation system is improved, and meanwhile, the path between the recommendation question and the question practiced by the student is extracted from the knowledge graph to generate interpretable recommendation.

The invention discloses a preparation method of a circulation type gas diffusion electrode for electrochemical CO2 reduction, and belongs to the technical field of electrochemical CO2 reduction. The circulation type gas diffusion electrode directly conveys carbon dioxide to the surface of a cathode in the electrochemical CO2 reduction process; the specific preparation method comprises the following steps: adding N-methyl-2-pyrrolidone into polyethyleneimine, and carrying out ultrasonic treatment; the preparation method comprises the following steps: adding copper powder into a transparent and uniform mixed solution of N-methyl-2-pyrrolidone and polyethyleneimine, and carrying out magnetic stirring; and calcining the uniform mixture of N-methyl-2-pyrrolidone, polyethyleneimine and copper powder and the hollow fiber of polyethyleneimine and copper powder in a smelting furnace to obtain the FTGDE electrode. By adopting the preparation method of the circulation type gas diffusion electrode for electrochemical CO2 reduction, disclosed by the invention, efficient transmission and utilization of carbon dioxide are ensured, and the electrochemical reduction reaction efficiency is improved.

The invention provides a cable force estimation method and device based on three-dimensional point cloud data and a readable storage medium. The method comprises the steps of projecting bridge point cloud data to an xOy plane and performing down-sampling to obtain two-dimensional point cloud data; calculating a skeleton line of the two-dimensional point cloud data, and then dividing the bridge point cloud data into a plurality of segments; processing the point cloud data of each section of the bridge to obtain a semantic segmentation result of the whole bridge; extracting point cloud data classified as inhaul cables, then slicing the point cloud data and fitting a circle center, and projecting the circle center to a two-dimensional plane; and obtaining the average cable force of each inhaul cable according to an Irvine equation and the two-dimensional circle center. A computer device includes a processor and a memory. Program instructions for implementing the method are stored on the readable storage medium. According to the method, the problems that the cable-stayed bridge cable force testing efficiency is low and the dependence of cable force point cloud data identification on a large amount of labeled point cloud data is high can be effectively solved, and the cable-stayed bridge cable force measuring efficiency can be greatly improved.

The invention discloses an automatic distribution type production line and a production process for pasting and welding reinforcing plates for tunnel steel arches. The production line comprises an automatic distribution mechanism, a displacement clamping mechanism and a pasting plate welding mechanism, and the automatic distribution mechanism is used for conveying joist steel with joints to a second conveying mechanism and conveying joist steel without joints to a first conveying mechanism; the flitch welding mechanism is used for welding reinforcing plates to the joist steel with the joints in a flitch mode; wherein the seamless I-shaped steel is discharged through the first conveying mechanism, and the seamless I-shaped steel is discharged through the third conveying mechanism after the reinforcing plate is pasted and welded. According to the invention, the joist steel can be automatically distributed, the joist steel with joints and the joist steel without joints are conveyed in two process routes, the process rhythm of the two process routes is clear and does not influence each other, the production rhythm can be better controlled, continuous mounting and welding operation of reinforcing plates can be realized, and the production efficiency is improved. Automatic and continuous production of the steel arch is achieved, and the production efficiency of the steel arch production line is greatly improved.

The present invention relates to the technical field related to solar water heaters, and discloses a wind-solar combined water heater with an active adjustment and reversing function, comprising a front end block and a rear end block rotatably mounted on the upper surface of the fixed base, a right side fixing frame and a left side fixing frame fixedly connected to the upper end surfaces of the front end block and the rear end block, a water storage tank fixedly connected to the surfaces of the right side fixing frame and the left side fixing frame, a water cavity being arranged inside the water storage tank, a plurality of flow pipes being fixedly mounted between the front end block and the rear end block, and by automatically steering and tracking the position of the sun, the solar collector can always maintain an optimal angle with the sun's rays, and maximize the absorption of solar radiation energy, thereby significantly improving the water heating efficiency and speed, and maintaining efficient heat collection in more periods of a day, which can increase the amount of hot water generated per unit time, especially on days with good lighting conditions.

The invention discloses a self-supporting diamond polycrystal material as well as a preparation method and application thereof, and belongs to the technical field of non-metallic materials. The preparation method of the self-supporting diamond polycrystal material provided by the invention comprises the following steps of: sintering diamond particles of 50-900 microns at 1390-1420 DEG C and 5.7-6.0 GPa by taking cobalt as a binder, carrying out secondary growth on the diamond particles in the sintering process, and removing impurities after sintering to obtain the self-supporting diamond polycrystal material. According to the method, the self-supporting diamond polycrystal material is prepared under the conditions of high temperature and high pressure by taking the diamond particles of 50-900 microns as raw materials, and the method has the advantages of simplicity, low cost and easiness in large-scale growth.

The invention provides a multi-selenocysteine selenoprotein P organic selenium preparation, and belongs to the technical field of feed additive preparation. The preparation method comprises the following steps: constructing recombinant pichia pastoris for expressing the multi-selenocysteine selenoprotein P, fermenting, culturing and expressing the multi-selenocysteine selenoprotein P, and carrying out spray drying on fermented bacteria liquid to prepare the multi-selenocysteine selenoprotein P organic selenium preparation. The selenium content of the yeast strain for expressing the multi-selenocysteine selenoprotein P is 1.69 times that of the yeast for expressing the natural selenoprotein P, and is 3.7 times that of the wild pichia pastoris. The polyselenocysteine selenoprotein P organic selenium preparation prepared through fermentation of the recombinant pichia pastoris is high in organic selenium content, and the problem that the selenium conversion efficiency of organic selenium prepared through a traditional method is low is solved.

The invention discloses a dual-power-supply low-voltage apparatus test system based on WTD-VMD-ZCD phase selection control closing and a use method of the dual-power-supply low-voltage apparatus test system. The system comprises a test voltage source loop, a capacitor charging and discharging loop, a test current source loop and a main control module, a voltage signal generated by a test voltage source is denoised and reconstructed by using a WTD algorithm, then VMD parameters are optimized by using a BKA algorithm, VMD decomposition is carried out on the voltage signal after WTD denoising, correlation calculation is carried out on obtained IMF components, and the correlation of the IMF components is calculated. The IMF component with the correlation higher than a set threshold value is selected as a denoised test voltage source signal, then zero-cross detection is carried out by using a ZCD algorithm, logic control of time sequence connection of a test voltage source and a test current source is carried out through phase selection opening and closing, and then the test of the low-voltage electric appliance is realized. The requirements of the low-voltage electrical apparatus on test power supply electric parameters and test quality are met, accurate control of the test is realized, the cost is low, and the system is simple and easy to construct and operate.

The present invention discloses a home environment remote monitoring and early warning system and method based on artificial intelligence, relates to the technical field of home environment monitoring and early warning, solves the technical problems that it is difficult to give early warning to ordinary home data in the monitoring and early warning of ordinary home data, and that in the monitoring and early warning of special home data, the personalized early warning threshold used is obtained based on a large amount of historical data of the family, and the reasonable setting of the early warning threshold for the family lacking or less historical data is ignored; the present invention obtains the judgment factor of the next time period based on the characteristic value of the ordinary home data and the environmental data of the next time period, and issues early warning information of the ordinary home data based on the judgment factor; obtains the personalized index of the current family based on reference data, and extracts the personalized threshold from the regional historical data based on the personalized index; and issues early warning information of the special home data based on the personalized threshold; the present invention can improve the comfort of family living and the accuracy of early warning.

The invention discloses a GIS-based territorial space planning optimization system and method, and relates to the technical field of Geographic Information System (GIS). Activity data of tourist users are collected to generate a thermodynamic diagram H of tourist activities, the thermodynamic diagram H is fused with GIS data to obtain a hot spot region Rhot, a development potential factor P (r) of each region is calculated in the hot spot region, and the development potential factor P (r) is calculated; therefore, more meticulous and personalized regional development evaluation is realized, the defect of insufficient consideration of tourist behaviors and regional characteristics in a traditional method is overcome, and in the optimization process, the total optimization cost Copt (r) of each region is analyzed and obtained by combining tourist flow and regional conveying capacity information, so that the optimal region development evaluation is realized. According to the method, the problem that the previous planning based on static data and experience cannot flexibly adapt to dynamically changing tourist flow and regional requirements is solved, and the matching degree between regional facility planning and actual tourist requirements is improved, so that more efficient and accurate regional development and resource allocation are realized.

The invention discloses a few-axis-point dressing method for a drum-shaped worm grinding wheel. The dressing precision of a face gear worm grinding wheel is improved by avoiding the requirement of the grinding wheel for a tilting axis of a machine tool. The nominal slotting cutter is perpendicular to the axis of the grinding wheel, and the end face profile of the nominal slotting cutter is consistent with the section profile of a grinding wheel shaft, so that the requirement of a dressing wheel on a machine tool deflection shaft is avoided, the number of machine tool movement shafts participating in linkage in the grinding wheel dressing process is reduced, and the grinding wheel dressing precision is further improved; according to the method, only three machine tool shafts are used for finishing the worm grinding wheel of the opposite gear in a linkage mode, a grinding wheel rotating shaft, a radial moving shaft and an axial moving shaft are included, and a finishing path uniformizing method is provided so that precise and efficient finishing machining of the worm grinding wheel profile can be guaranteed. According to the method, the defects of high cost, poor flexibility and existence of principle errors of the formed dressing wheel can be avoided, and a theoretical foundation is laid for reverse adjustment of the tooth grinding error of the face gear or generating grinding of the tooth surface of the complex modified face gear.

The utility model relates to a vehicle-mounted ceiling screen support assembly formed by punching a galvanized steel sheet, which comprises a fixed support, an overturning component, a supporting component and a spring bolt component, the fixed support is made of the galvanized steel sheet formed by punching, a reinforcing structure is formed on the surface of the fixed support, and a screw hole is formed on the surface of the fixed support; the overturning assembly and the supporting assembly are symmetrically arranged on the two opposite sides of the screen. A side opening clamping structure is arranged on a shell of the overturning assembly and a shell of the supporting assembly, a vibration isolation sleeve is embedded in the clamping structure, a center through hole is formed in the vibration isolation sleeve, the vibration isolation sleeve is fixed to the screw hole through a step screw, and the outer diameter of the step face of the step screw is in interference fit with the inner diameter of the center through hole of the vibration isolation sleeve. According to the vehicle-mounted ceiling screen support assembly formed by stamping the galvanized steel sheet, the galvanized steel sheet formed by stamping is adopted as a core structure, all the components are optimally designed, and the effects that cost is reduced, structural strength is improved, vibration isolation and assembly are simplified, and installation adaptability is enhanced are achieved.

This utility model relates to the field of mechanical parts processing technology, specifically a segmented guide hole ring die structure correction device, including a worktable. Several legs are installed at the bottom of the worktable. A first electric telescopic rod is installed in the middle of the lower surface of the worktable. A base is installed on the top of the first electric telescopic rod. A slot is formed on the top of the base, and a seat plate is engaged inside the slot. An extrusion column is installed on the top of the seat plate, and a ring die component is fitted onto the surface of the extrusion column. A mounting groove is formed at one end of the upper surface of the worktable, and a rotating groove is formed in the middle of the upper surface of the worktable. A motor is installed inside the mounting groove. The improved correction device can perform reciprocating correction operations at multiple angles, avoiding the tedious operation of manually adjusting the workpiece angle. It also allows for flexible replacement of correction tools, helping to adapt to workpieces of various specifications and improving the applicability of the equipment.

The present disclosure relates to contact lenses for use with eyes suffering from axial length related diseases such as myopia. The present invention relates to a contact lens for managing myopia in an eye; wherein the contact lens is configured with: an optical zone, the optical zone being defined as being substantially centered about the optical axis of the contact lens, the optical zone being configured to provide a substantially toric or astigmatic directional cue to the eye; and a non-optical peripheral carrier zone surrounding the optical zone, the non-optical peripheral carrier zone being configured with a substantially rotationally symmetric thickness profile to further provide a stop signal that varies in time and space to thereby slow, improve, control, inhibit or reduce the rate of progression of myopia over time.

The invention relates to an underwater robot deck visualization operation system and method. The system comprises a control platform, a deck equipment sensor, a camera and an underwater robot. The control platform comprises a control cabinet, an integrated operation chair and a video wall. The control cabinet integrates a data interaction module, a control system, a local data acquisition module, a protocol conversion gateway and an optical fiber communication module to realize data transmission and instruction interaction between equipment; and the control system processes equipment data through the data interaction module and controls the deck equipment and the underwater robot. The integrated operation chair integrates an operation panel, a touch screen and an ergonomic chair, and the operation panel comprises a winch laying button, a cable arrangement device moving button, a traveling block unlocking button and an underwater robot control button. And the video wall displays sensor data and video monitoring pictures. The integrated design is adopted, high integration of deck equipment and an underwater robot operating system is achieved, and the problem of separation of control systems of the deck equipment and the underwater robot operating system is effectively solved.

The invention belongs to the technical field of automobiles, and particularly relates to an automobile instrument board weakening residual thickness automatic detection device, which comprises an industrial robot and further comprises a mounting bracket, an automatic detection device and an automatic detection device, and the mounting bracket is fixedly mounted on a mechanical arm of the industrial robot; the milling cutter module is mounted on the mounting bracket; the laser sensor is installed on the installation support, non-contact detection of the laser sensor is adopted, and compared with mechanical detection, the laser sensor is more flexible and convenient to use; the device is suitable for various weakening lines, is also suitable for triangular or U-shaped small weakening lines, and can automatically capture the lowest point of the weakening line; the precision can reach 0.001 MM; the device is more convenient to install and can be integrated in a milling cutter module, and the requirement for independently manufacturing one detection device is met.

This application relates to the field of circuit technology, specifically to PCIe expansion circuits, computer motherboards, and computer devices. The PCIe expansion circuit includes: a main control circuit; a PCIe switching circuit electrically connected to the main control circuit; a first PCIe interface circuit electrically connected to the PCIe switching circuit; a second PCIe interface circuit electrically connected to the PCIe switching circuit; and an embedded controller electrically connected to the PCIe switching circuit, configured to control the PCIe switching circuit to select a target PCIe interface circuit between the first and second PCIe interface circuits, so that PCIe data from the main control circuit is transmitted to the target PCIe interface circuit through the PCIe switching circuit. This application embodiment dynamically controls the selection state of the PCIe switching circuit through the embedded controller, realizing the transmission from the main control circuit to the target PCIe interface circuit, ensuring the user's autonomy in selecting PCIe functions, and improving the flexibility and applicability of the device.

The invention relates to a partial discharge fault detection method and device based on an optical microdisk, and belongs to the technical field of fault detection. Comprises: emitting a laser signal; adjusting the intensity of the laser signal to obtain an adaptive laser signal; coupling an optical signal with a specific wavelength in the adaptive laser signal to form a stably existing standing wave, and obtaining a first optical signal; converting the first optical signal into an electric signal, and performing phase-sensitive demodulation on the electric signal to obtain position information of the sound signal; and identifying and positioning the partial discharge signal according to the position information. According to the invention, real-time online detection is realized, the detection efficiency is obviously improved, electromagnetic interference resistance is realized, the dependence on processing of a large amount of information is reduced, and the data processing time is shortened.

The application discloses an automatic screen protection film pasting method and a film pasting device. The method comprises the following steps: positioning and fixing an electronic device; placing a protection film on a bearing part suspended above and on both sides of the screen; controlling a film material alignment mechanism to apply a pushing force to the protection film from both sides and front and back sides, so that the protection film is aligned with the screen; and controlling a rolling mechanism to perform the following actions: driving the rolling mechanism to press the protection film to a first pressing position of the screen at a first mechanical trigger position, so as to paste the protection film between the first pressing position and a first side edge of the screen; and driving the rolling mechanism to press the protection film to a second pressing position of the screen at a second mechanical trigger position, so as to paste the protection film between the second pressing position and a second side edge of the screen. The problems of low pasting yield and poor reliability caused by inaccurate alignment, poor exhaust path and complex electrical control timing in the traditional film pasting process are solved.

The invention belongs to the technical field of preparation of environment-friendly functional materials, and discloses a preparation method of a silicon dioxide nanobelt based on bubble breakage and application of the silicon dioxide nanobelt to adsorption of heavy metal lead. The preparation method comprises the following steps: firstly, preparing an oil-in-water (O / W) nano emulsion by using a bubble breaking method, and inducing deformation of nano liquid drops by using a silane coupling agent with relatively strong hydrophobicity after hydrolysis to prepare the amino-functionalized silicon dioxide nanobelt. According to the method, continuous and low-energy-consumption preparation of the silicon dioxide nanobelt adsorbent can be realized, and functionalized silicon dioxide nanotubes, nano bowls and nano hollow spheres can be prepared by a one-step method. The problems that the silicon dioxide nanobelt is difficult to prepare, the thickness is difficult to control and an adsorbent is easy to settle are solved through structural regulation and control, then the silicon dioxide nanobelt is applied to lead-containing wastewater treatment through surface post-modification, and the excellent adsorption performance is shown.