37results about How to "Avoid expensive" patented technology

The invention belongs to the technical field of intelligent disaster prevention, and particularly relates to a digital twinborn intelligent operation, maintenance and evaluation system for energy dissipation and shock absorption parts. The system comprises an intelligent sensing module, a fidelity reduced-order model and a virtual-real interaction intelligent decision-making module, and a solution is provided for intelligent operation and maintenance of energy dissipation and shock absorption parts by integrating and adopting a digital twin technology, an internet of things technology, an edge computing technology and other technologies. According to the method, a digital twinborn technology is adopted to establish a fidelity virtual twinborn body of the energy dissipation and shock absorption part, the overall performance state of the part is perspective through a virtual sensor means, and a new technology is provided for whole-life-cycle operation and maintenance of the part. By means of the technology, the performance state of the core component of the engineering structure can be mastered in real time, the core component can be kept in a full-time online transparent state in the whole life cycle, and the anti-disaster toughness capacity of the engineering structure is improved on the whole.

The invention belongs to the technical field of protein structure prediction, and relates to a protein structure prediction method, system and device based on a light quantum computer, and the method comprises the steps: 1) obtaining a multi-sequence alignment MSA matrix of a target sequence based on the target sequence alignment of a to-be-predicted protein; 2) encoding the obtained multi-sequence alignment MSA matrix into a {0, 1} matrix; 3) converting the amino acid interaction of the protein into an undirected graph model of {0, 1} state nodes, and training by adopting a Boltzmann machine training mechanism and using a light quantum computer to obtain a weight coefficient of a connecting edge between the nodes in the undirected graph model; and 4) obtaining an interaction coefficient between different amino acids of the protein based on the weight coefficient. According to the method, the calculation efficiency and the solving result of protein structure prediction are improved, and the problems that complex scheduling problems are difficult to calculate and accurate solutions cannot be obtained in the prior art are solved.

The invention belongs to the technical field of antibacterial super-hydrophobic functionalization of selective laser sintering parts, and particularly relates to a preparation method of a breathable, antibacterial and self-cleaning TPU sports knee pad. According to the invention, SiO2 and TiO2 are grown on GO to obtain super-hydrophobic modified GO, and the super-hydrophobic modified GO-WPU emulsion is prepared through emulsion polymerization. Then, the TPU sports knee pad which is formed through the SLS technology and is of a gradient hollowed-out lattice structure with the hollowed-out degree gradually increasing from outside to inside is coated with an antibacterial and self-cleaning coating. The finally prepared TPU sports kneecap has breathable, antibacterial and self-cleaning functions, and is light to wear and high in buffer protection performance.

The invention discloses a stain analysis and learning model combined static source code scanning method, and belongs to the technical field of source code scanning. Comprising the following steps: acquiring source codes in a project code library to establish a source code set, and analyzing the source codes in the source code set into an abstract syntax tree and code features in the abstract syntax tree; obtaining source codes in the source code set, public data of the vulnerability database and historical vulnerability code samples in the enterprise code library to build a data set, building a deep learning model, standardizing data in the data set to obtain marked data, forming a training set by the data subjected to optimization training of the deep learning model, and storing the training set in the enterprise code library; training data in the optimization model are collected to serve as a verification set to evaluate the optimization model, model analysis results are obtained, an analysis report is obtained for the two analysis results, specific vulnerability types are recognized, and repair suggestions and codes are provided. According to the method, potential security vulnerabilities can be identified, detailed repair suggestions can be provided, and developers are helped to quickly solve security problems.

The invention relates to the technical field of hydrogen production, in particular to a capacitor electrode and a decoupling water electrolysis hydrogen production square electrolytic bath, and by means of the design of gas and liquid flow channels of the capacitor electrode and the decoupling water electrolysis hydrogen production square electrolytic bath, hydrogen and oxygen can be isolated in water electrolysis reaction; the high cost of the ion exchange membrane is saved, and the limitation of the diaphragm is broken through, so that the working pressure of the electrolytic cell can reach 5MPa or even higher; by arranging the electrolytic cell limiting mechanism, the small electrolysis chambers can be prevented from falling, so that leakage of electrolyte is prevented, and meanwhile, due to the modular skid-mounted design, distributed moving and mounting are facilitated, and overhauling and maintenance during faults are facilitated; by means of the unique design of the square flow field, the square alkali liquor inlet and outlet and the square hydrogen / oxygen outlet, it can be ensured that the flow speed of an electrolyte flow channel is uniform, gas is exhausted in time, energy loss is reduced, and the electrolysis efficiency is improved.

The invention discloses a telomerase detection composition, kit and system based on DNA tetrahedron strand displacement reaction, the composition comprises four single-chain sequence probes T1, T2, T3 and T4 used for assembling into a three-dimensional DNA tetrahedron, and the top of the three-dimensional DNA tetrahedron is provided with a suspension sequence P0; a probe P1 and a probe P2 each comprising a partial complementary sequence of P0; the 5'end of the probe P3 is marked with methylene blue; and a strand displacement reaction primer. The method has high sensitivity and good selectivity, and various cells can be distinguished through telomerase activity; meanwhile, the method also has the capability of screening a telomerase inhibitor; compared with a conventional detection scheme, the method does not need any other enzyme, only needs isothermal one-pot reaction, and can avoid complex operation and expensive reagents, so that the method has huge potential practical value for early diagnosis of telomerase-related diseases and drug research and development.

The invention provides abiraterone acetate and a preparation method thereof, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: mixing dehydroepiandrosterone, an aprotic polar solvent, an acylating agent and a first acid-binding agent, and carrying out first esterification reaction to obtain dehydroepiandrosterone acetate; mixing dehydroepiandrosterone acetate, a first solvent, a second acid-binding agent and halogen phosphate, and performing second esterification reaction to obtain an intermediate; and mixing the intermediate, a second solvent, 3-pyridine borate, a ligand, alkali and a metal catalyst, carrying out a coupling reaction, and carrying out post-treatment to obtain abiraterone acetate. According to the method, phosphate is obtained from halogen phosphate, so that the cost is low, the reagent toxicity is relatively low, and the yield is higher; phosphate ester is used as a coupling substrate, the reaction is stable, high-temperature conditions are not needed, energy consumption is low, impurities are few, and the yield is high. The result of the embodiment shows that the purity of the abiraterone acetate is higher than 99.35, and the yield is higher than 85%.

The invention discloses a preparation method of fiazonetin, and belongs to the technical field of medicinal chemistry. According to the route, 2-halo-3-methylpyrazine which is low in price and easy to obtain is used as a raw material and sequentially reacts with hydrazine hydrate and orthoester, and then a hydrogenation reduction reaction is performed to generate a compound 4; carrying out chiral resolution or chiral separation on the compound 4 and carrying out condensation reaction on the compound 4 and p-fluorobenzoyl halide to obtain an intermediate compound 5 or 5'and a new intermediate compound 6; reacting the compound 6 with a halogenating reagent to obtain a compound 7; carrying out Suzuki coupling reaction on the compound 7 and a compound 8 to obtain a compound, namely, the compound of the formula A, namely, non-azonepan; according to the route, the raw materials are simple, easy to obtain and low in cost; the reaction is simple, the preparation efficiency is high, and the reaction yield of each step can be higher than 90%; no harsh reaction conditions exist, and operation is safe; post-treatment is simple and convenient, and environmental pollution is low. The method is suitable for large-scale production; a high-chiral product can be obtained, the chiral purity value of a final product is as high as 99.5%, and the method has relatively good market value and profound practical significance. # imgabs0 #

The invention provides a method for separating and repairing a heterogeneous positive electrode black powder material, which comprises the following steps of: performing carbonization heat treatment on the heterogeneous positive electrode black powder material to obtain a carbonized heterogeneous positive electrode black powder material; mixing the carbonized heterogeneous positive electrode black powder material with a density heavy liquid, and carrying out cyclone separation treatment to respectively obtain a heavy product and a light product; and mixing the heavy product with a lithium source, and carrying out lithiation calcination treatment to obtain the nickel cobalt lithium manganate positive electrode material. Carrying out oxidation sintering treatment on the light product to obtain a sintered material, mixing the sintered material with a carbon source and a lithium source, and carrying out thermal reduction treatment to obtain a lithium iron phosphate positive electrode material; the heterogeneous anode black powder material comprises a mixed material of ternary nickel cobalt lithium manganate anode material black powder and lithium iron phosphate anode material black powder. According to the separation and restoration method, no strong acid, strong base or waste liquid is generated, no heavy metal is lost, efficient recovery and utilization of key elements on the material level are achieved, and density heavy liquid and water for washing can be recycled.

The invention relates to the technical field of groundwater refilling, in particular to a groundwater refilling dynamic balance intelligent control device, which comprises a data acquisition module for collecting feature data of groundwater in a target area through i observation wells in the target area, analyzing the feature data of the groundwater in the target area, and calculating the dynamic balance of the groundwater in the target area; the underground water level of the target area at the future P moment is predicted, the underground water loss rate of the target area at the future P moment is obtained according to the underground water level of the target area at the future P moment, and then the underground water storage capacity coefficient of the target area is calculated by obtaining the thickness, area and porosity of the aquifer of the target area in combination with the permeability coefficient. Inputting the obtained groundwater loss rate, the groundwater storage capacity coefficient and the groundwater level of the target area acquired in real time into the trained machine learning model to predict groundwater supplement amount; the control precision of the groundwater supplement amount is guaranteed, and dynamic balance of groundwater is achieved.

The application provides a preparation method of a benzaldehyde aniline compound and relates to the technical field of organic synthesis. The preparation method provided by the application comprises the following steps: in a solvent, with an alkali as a promoter, under an atmosphere with an oxygen concentration of 20v100%, the temperature of a reaction system is controlled to be 50-70 DEG C, a diphenyl ketone compound I is reacted with an aniline compound II to generate a benzaldehyde aniline compound III, and the reaction product is subjected to column chromatography separation to obtain a pure benzaldehyde aniline compound III. The method has the beneficial effects that the reaction is simple, green and environment-friendly, the use of an expensive transition metal catalyst is avoided, the reaction condition is mild and controllable, and an environment-friendly byproduct is generated.

The invention relates to the field of synthesis of pyrazolone, and provides a method for synthesizing a pyrazolone structure by utilizing carbon dioxide aiming at the problem that an expensive transition metal catalyst and high-toxicity carbon monoxide are needed for synthesizing pyrazolone by utilizing carbonylation reaction, and the reaction formula is as follows: # imgabs0 # reaction conditions are as follows: in the presence of carbon dioxide, in an organic solvent and under the action of alkali, the reaction is carried out for 1-3 hours, so that the pyrazolone structure is synthesized by utilizing carbon dioxide. And reacting the compound II with carbon dioxide to obtain the pyrazolone structure. According to the method, the pyrazolone structure is synthesized in a green and efficient manner by utilizing carbon dioxide.

The invention discloses a method for detecting perfluorooctanoic acid based on an aptamer-triggered nucleic acid amplification strategy and electrogenerated chemiluminescence, and relates to the technical field of perfluorooctanoic acid detection. The method comprises the following steps: synthesizing PFN NPs, using a step pulse method as an electrochemical excitation method, enabling the PFN NPs to induce a strong ECL signal only by using a + 0.80 V pulse voltage under the condition that an additional co-reaction reagent is not needed, and adopting a PFN NPs coupled rolling circle amplification to assist a PAM sequence-free CRISPR / Cas12a system to construct an ultra-sensitive ECL aptamer sensor, so that the detection limit is as low as 1.97 * 10 <-15 > M. The method provided by the invention is low in cost, higher in detection sensitivity and low in ECL trigger potential, and effectively solves the problems that the ECL trigger potential required by the existing detection method is too high, an effective signal amplification strategy is lacked, the detection sensitivity is limited, and the requirement of ultra-trace detection cannot be met.

The present invention relates to a method for preparing a stable crystalline A / M / X material, wherein the material comprises a compound of formula [Z] p O q Oxide and formula [A] a [M] b [X] c A compound of the invention, wherein [Z] comprises at least one element Z capable of forming an oxide having a band gap of at least 3 eV; p and q are positive numbers; [A] comprises one or more A cations; [M] comprises one or more M cations; [X] comprises one or more X anions; a is an integer from 1 to 6; b is an integer from 1 to 6; and c is an integer from 1 to 18. Typically, the stable crystalline A / M / X material is a perovskite. The invention also provides a stable crystalline A / M / X material that can be produced by the method of the invention. The invention further provides materials and devices containing the stable crystalline A / M / X material of the invention.

The invention relates to a spring force clamping connection for clamping a cable comprising an insulating sheath in an uninsulated manner, wherein at least one electrical conductor is arranged in the insulating sheath, wherein the spring force clamping connection has at least one busbar and a clamping spring, wherein the clamping spring has a clamping leg, which is configured for clamping the electrical conductor at a contact section of the busbar, and a bearing leg for spring force support of the clamping spring relative to the clamping leg. The invention also relates to a terminal having such a spring force clamping connection.

The invention discloses a preparation method of fiazonetin, and belongs to the technical field of medicinal chemistry. According to the route, a 3-methylpyrazine compound is used as a raw material, a compound 3 is obtained through an amine alkylation reaction or a condensation reaction, the compound 3 reacts with orthoester to obtain a compound 4, the compound 4 is subjected to a hydrogenation reduction reaction to obtain a compound 5, and the compound 5 is subjected to chiral resolution or chiral separation to obtain a compound 6. And carrying out condensation reaction on the compound 6 and p-fluorobenzoyl halide to obtain the non-azonepan. The raw materials are simple and easy to obtain, low in cost and more suitable for large-scale industrial production; according to the present invention, the route reaction is simple, the preparation efficiency is high, the yield of each reaction step can achieve about 90%, the ee value of the final product can achieve more than 99.0%, the chiral purity is high, no harsh reaction condition exists, and the method is suitable for large-scale production, and has good market value and profound practical significance. # imgabs0 #

The application discloses a multi-protocol conversion method, system, device and medium between fire alarm devices, and belongs to the technical field of communication; wherein the method comprises the following steps: S1, loading a protocol template; S2, establishing communication with a source device; S3, original data analysis and conversion; S4, data standardization writing into a database; S5, standardized data mapping and frame construction; S6, establishing communication with a target; the system comprises the following modules: a protocol configuration module, used for storing and managing template information of all converted protocols; a data acquisition and analysis engine, used for establishing communication with the source device; a data standardization and database module, used as a data transfer hub of the system; a data mapping and encapsulation engine, used for preparing communication data for the target device; and a data sending engine, used for communicating with the target device; the application solves the problems of protocol incompatibility between new and old fire alarm devices, lack of flexible conversion mechanism and difficulty in unified access to an Internet of Things platform in the prior art.

This invention relates to the field of backfill construction technology for building structures, and discloses a "sandwich" type anti-settlement construction method for high embankments in the first floor. The method includes: compacting the original soil in layers; pouring C15 plain concrete on the soil layers as a primary anti-settlement cushion layer and also serving as the foundation for the construction scaffold; after the scaffold is dismantled, pouring fluidized solidified soil with micro-expansion characteristics as a core "sandwich" layer to offset creep a second time, with a mix ratio of soil:solidifying agent:water = 10:1:3.5; and constructing C25 concrete with embedded steel mesh on the solidified soil as a tertiary anti-settlement cushion layer. This application can effectively control the settlement of high embankments through a "rigid-flexible-rigid" gradient reduction mechanism, utilizing the synergistic effect of multiple differentiated materials to ensure structural bearing capacity while avoiding the risk of ground cracking, realizing the resource utilization of waste soil, and significantly reducing construction and subsequent maintenance costs.

The invention discloses a zinc-doped high-toughness injectable organic-inorganic composite bioactive material and a preparation method thereof.The composite bioactive material comprises a water aqua and powder, the water aqua comprises water-soluble calcium salt, water-soluble phosphate, polyacrylic acid, polyaspartic acid, polyvinylpyrrolidone, citric acid and deionized water, and the powder comprises water-soluble calcium salt, water-soluble phosphate, polyacrylic acid, polyaspartic acid, polyvinylpyrrolidone, citric acid and deionized water. The powder comprises calcium hydrophosphate, tetracalcium phosphate and a zinc source. The zinc element is added, so that proliferation, differentiation and the like of osteoblasts are remarkably promoted, unexpected osteogenic activity is shown, all excellent mechanical properties in an existing bioactive material are completely reserved, and the properties include but not limited to coagulation time, compressive strength, toughness, injectability and the like; furthermore, the addition of zinc has no negative effects.

The invention provides a design method for preventing light leakage at the position of a screen camera hole of a blind hole screen, and relates to the technical field of wireless communication, and the method comprises the following steps: S1, preparing a backlight module; s2, arranging an iron frame at the position of a camera hole of the backlight module; s3, a circle of rubber frame is attached to the edge of the iron frame; s4, filling black glue, measuring a gap between the glue frame and the display glass, adjusting the amount of the black glue according to a measurement result, and uniformly filling the gap with the black glue; s5, the black glue is cured, and the backlight module is placed in a constant temperature box; according to the design, the black glue is accurately filled through automatic equipment, an additional glue dispensing procedure is avoided, the investment of materials and equipment is reduced, the overall cost is reduced, and the manufacturing process of the backlight module is accurately controlled, so that the durability of a product is improved, and the quality problem caused by light leakage is reduced; the expensive investment of dispensing equipment and the use of high-cost thermosetting adhesive are effectively avoided, so that manufacturers with small-batch production can also adopt the technology.

The invention discloses an earthquake monitoring and early warning device based on electrostatic induction, namely an electrostatic induction pendulum. The device comprises a pendulum and an electrostatic induction sensor, and tiny potential changes can be detected in the swinging process. As a core component, the electrostatic induction sensor consists of the following key parts: a weight module, a connecting layer I, an electrode layer, a connecting layer II and an electrostatic interaction layer. Wherein the weight module provides necessary mass so as to ensure the dynamic characteristics of the pendulum; the first connecting layer is used for fixing the connection between the weight module and the electrode layer; the electrode layer is responsible for detecting electrostatic induction signals generated by pendulum motion and converting the signals into measurable potential change; the second connecting layer is used for fixing the electrode layer and the electrostatic interaction layer; the material of the electrostatic interaction layer carries charges, and the electrostatic induction signal of the electrode layer is enhanced in the earthquake monitoring and early warning process. Through the design, the device can realize high-sensitivity monitoring of earthquake precursor, and can capture fine ground movement caused by earthquake waves. In combination with a data acquisition system and a machine learning algorithm, the device can analyze the signals in real time and automatically send early warning information to related departments and individuals when an abnormal vibration mode is detected, so that precious time is won for taking preventive measures.

The present invention relates to an imine reductase or a mutant thereof and an application thereof in synthesizing a polycyclic chiral nitrogen heterocyclic compound, a method for synthesizing a polycyclic chiral nitrogen heterocyclic compound, and belongs to the field of enzyme engineering. The present invention provides an imine reductase IR-F7 mutant, which is a mutant obtained by mutation of a wild-type imine reductase IR-F7 with an amino acid sequence such as shown in SEQ ID No.1 as a parent. The present invention provides an application of an imine reductase IR-F7 or a mutant thereof, an imine reductase IR-B8 or a mutant thereof in synthesizing a polycyclic chiral nitrogen heterocyclic compound. The imine reductase or a mutant thereof of the present invention can catalyze intramolecular reductive amination, synthesize a polycyclic chiral nitrogen heterocyclic in one step, and avoid the use of expensive chiral reagents; by combining the DKR process, the raw materials can be fully utilized, no additional amino donor is required, and a good yield and selectivity are obtained; it has a wider substrate application range, and has more potential in the industrial application of synthesizing polycyclic chiral nitrogen heterocyclic compounds.

The utility model discloses an investment casting structure for a water outlet nozzle of a coffee machine. The investment casting structure comprises a lower half wax mold and an upper half wax mold combined with the lower half wax mold, a plurality of protruding positioning pieces are arranged at the bottom of the upper half wax mold, and correspondingly, pits matched with the protruding positioning pieces are formed in the lower half wax mold; the contact surfaces of the upper half wax mould and the lower half wax mould are coated with bonding layers which are used for bonding the upper half wax mould and the lower half wax mould when the upper half wax mould and the lower half wax mould are butted; the lower half wax mould comprises a semispherical wax mould body and an arc-shaped wax mould body which is integrally formed with the semispherical wax mould body, and the semispherical wax mould body is communicated with the middle part of the arc-shaped wax mould body. According to the utility model, by adopting the split and combined wax mould design, the cost for manufacturing parts with complex shapes can be obviously reduced, the method avoids the use of expensive metal moulds, simplifies the production flow, permits the rapid manufacturing and combination of wax moulds, improves the production efficiency, and shortens the production cycle due to the reduction of the production steps.

The utility model provides a temperature-uniforming plate shell and a temperature-uniforming plate, the temperature-uniforming plate shell comprises a main shell body, a first plate part and a second plate part of the main shell body are opposite in position, and at least the first plate part is arranged to comprise a main plate body and a reinforcing body embedded in the main plate body; wherein the main plate body is made of a first material body, the reinforcing body is made of a second material body, and the strength of the reinforcing body is larger than that of the main plate body. Through the arrangement, the first material body can be a conventional copper material, the second material body can be a stainless steel material, and the stainless steel material is embedded into the copper material, so that the high-strength advantage of the stainless steel material is introduced on the basis of keeping the original copper material main body, and the strength of the uniform-temperature plate shell is enhanced through structural compounding; compared with the prior art, the temperature-uniforming plate shell is not subjected to material compounding, and still takes the original copper substrate or aluminum substrate as a main body, so that the manufacturing process and manufacturing equipment of the existing temperature-uniforming plate can be continuously used, and the problem of how to improve the strength of the temperature-uniforming plate within limited cost in the prior art is solved.

The present invention discloses a double-sided stacked fan-out packaging device and a preparation method thereof, wherein the packaging device comprises a substrate with through holes; a stacked chip; an encapsulation material layer; a rewiring layer located on the encapsulation material layer; a first conductive structure, wherein the chip located on the first surface is electrically connected to the rewiring layer through the first conductive structure; and a second conductive structure that runs through the thickness direction of the substrate, wherein at least a portion of the second conductive structure is disposed in at least a portion of the through holes of the substrate, and the second conductive structure electrically connects the rewiring layers on the first surface and the second surface of the substrate. The solution of the embodiment of the present invention electrically connects the chips mounted on the two surfaces of the substrate through the second conductive structure disposed on the substrate. Compared with the TSV packaging process, it avoids making silicon through vias on the chip, reduces the packaging cost, and can effectively improve the packaging yield. Compared with the wire bonding packaging process, it avoids interconnecting the chips through a carrier and wires, thereby improving the transmission efficiency.

A disposable integrated endoscope integrates two light-emitting diodes (LEDs) and two complementary metal-oxide-semiconductor (CMOS) image sensors at the endoscope's tip. This not only avoids the use of expensive light guide prisms, making it a relatively low-cost, disposable integrated endoscope, but also provides clearer three-dimensional (3D) images of internal tissues or organs through the LEDs' light source. Furthermore, by incorporating a unique heat-conducting pipe cooling structure at the endoscope's tip, the high heat generated by the image sensors at the tip is rapidly conducted to the endoscope's rear end, achieving excellent heat dissipation and preventing the endoscope's tip temperature from exceeding 48°C and burning human tissue.

The invention relates to a time synchronization method and system based on a time synchronization gateway, and belongs to the field of computer networks, and the method comprises the steps: building a master-slave relation between the gateway and upstream PTP equipment at a gateway time service side, so as to complete PTP synchronization; analyzing the message through a data plane to obtain timestamp information, and sending the timestamp information to a control plane; according to the timestamp information, determining a clock offset through the control plane; adjusting a local clock of the gateway according to the clock offset; and establishing a master-slave relationship between the gateway and the downstream network equipment at the gateway time side so as to complete SD-PTP (Secure Digital-Precision Time Protocol) synchronization. According to the invention, time synchronization does not exist in a control plane of the switch only, the influence caused by clock drift of equipment during software processing delay is avoided, a client does not need to carry out multi-round synchronization and statistical filtering any more, and large-scale network deployment and expansion can be realized under the condition that delay is not increased and precision is not influenced.

This utility model relates to the field of agricultural technology, specifically to a laser weeding machine, including a power supply, a mechanical mounting structure, a system main control unit, functional modules, a motor and its drive module. The functional modules are characterized by comprising a sub-control module, a characteristic spectrum storage chip, a spectrometer, a spectrometer light source, an optical path coupling module, and a laser. This utility model utilizes a right-angle prism to reflect the light emitted from the spectrometer light source and the laser from opposite directions, respectively. A stepper motor can precisely adjust the angle of the right-angle prism, ensuring that the two beams of light from the spectrometer light source and the laser can be focused on almost identical small areas. This improves the accuracy of beam positioning, enhances the reliability and efficiency of the system, and avoids the complex and expensive dichroic mirrors required in traditional laser weeding equipment, thus greatly simplifying the structure of the optical system and reducing production costs and technical implementation difficulties.

This invention discloses a method and system for rapid prediction of battery pack collision intrusion based on multi-fidelity data fusion. First, a training dataset containing high-fidelity and low-fidelity samples is constructed through finite element simulations with different mesh accuracies. Then, a two-level fusion model is established using Gaussian process regression. The predictions of the low-fidelity model are used as correction features to guide the high-fidelity model in accurate learning. Furthermore, based on an ensemble learning and Bayesian optimization framework, an improvement expectation criterion that incorporates simulation cost trade-offs is used for adaptive sampling. The location and accuracy level of newly added samples are intelligently determined, and the model is continuously optimized through iterative updates. This invention effectively resolves the contradiction between high-precision prediction and high computational cost, significantly reducing data acquisition overhead while ensuring prediction accuracy, providing an efficient and reliable technical means for battery pack collision safety assessment and optimization design.

This invention relates to a custom time-delay message processing method based on a distributed message queue, belonging to the field of distributed message queue technology. The method includes: a client receiving an arbitrary delay duration specified by the user, calculating a target Unix timestamp based on the client's current system time, and sending a message carrying that timestamp to a message broker layer; the message broker layer storing the message in a delay queue and inserting it into the corresponding time slot of a hierarchical circular time wheel according to the target Unix timestamp; the hierarchical circular time wheel consists of multiple levels of circular arrays, connected by an overflow mechanism; the message broker layer advances a global pointer at fixed time intervals, scans the messages to be scheduled in the time slots, and transfers expired messages from the delay queue to a regular queue for consumer consumption. This achieves flexible support for arbitrary delay durations and achieves task scheduling with O(1) time complexity through the hierarchical circular time wheel.