37results about How to "Avoid excessive concentration" patented technology

The invention discloses an intelligent user permission conflict detection method and system, and relates to the field of electrical digital data process.The method comprises the steps that a service flow diagram is constructed based on historical records; extracting a service flow direction sequence of the permission roles from the service flow direction graph, and calculating service association degrees among the permission roles according to the service flow direction sequence; grouping and clustering the authority roles according to the business association degree to obtain a plurality of authority role clusters; calculating a service boundary value of each permission role cluster; determining a target permission role cluster to which the target permission role belongs from a plurality of permission role clusters; calculating the business association strength between the permission role currently owned by the target user and the target permission role; when the business association strength exceeds a business boundary value, generating a first permission allocation control instruction; and when the business association strength does not exceed the business boundary value, generating a second permission allocation control instruction. The method and the device are used for solving the problem of authority conflict in a newly-added business scene, so that the security of the system is improved.

The invention relates to the technical field of information transmission, in particular to a wireless data transmission system and method based on 5G communication. The method comprises the following steps: acquiring 5G communication data of an industrial park and carrying out park unit communication demand analysis to obtain industrial park unit communication demand data; performing virtual slice priority redistribution according to the industrial park unit communication demand data to obtain optimized virtual slice priority data; performing dynamic resource sharing strategy analysis according to the optimized virtual slice priority data to obtain an industrial park communication resource dynamic sharing strategy; acquiring real-time industrial park 5G communication data and performing unit communication transmission time delay evaluation so as to obtain unit communication transmission time delay data; and carrying out dynamic sharing time sequence optimization on the dynamic sharing strategy of the industrial park communication resources based on the unit communication transmission time delay data so as to obtain an optimized dynamic sharing strategy of the industrial park communication resources. The bandwidth utilization rate of the network can be improved.

The invention relates to the technical field of electronic digital data processing, in particular to a data responsibility traceability method and system based on edge computing, and the method comprises the steps: collecting the surrounding environment data of a production line, and obtaining a regional environment influence feature value through processing; obtaining operation data of each edge device, processing the operation data to obtain a performance evaluation index of each edge device, and carrying out bearable data volume matching on each edge device; basic data of each edge device is collected, and abnormal characteristic values of each edge device are obtained through processing; performing comprehensive analysis to obtain a fault risk assessment index of each edge device, and performing risk assessment and feedback on each edge device; according to the data responsibility tracing method and system based on the edge computing, the demand processing data of each edge device is obtained, data distribution is carried out on each edge device and the cloud processing device, the data can be ensured to be effectively processed in time, and the overall efficiency of data processing and the overall utilization rate of resources are improved.

The invention belongs to the technical field of server cluster load balancing, and discloses a server cluster load balancing method based on edge computing, which comprises the following steps: acquiring task data, transmission data between nodes and load data of server nodes; constructing a load topological graph based on the load data and the transmission data, and performing multi-dimensional aggregation on the load data based on the load topological graph to obtain node state description; performing priority evaluation on the task data by adopting an analysis algorithm to obtain a task score; performing task optimal matching on node state description based on task scores to obtain an optimal allocation scheme, predicting the optimal allocation scheme based on the constructed load prediction model to obtain overload allocation, and performing local task migration on the overload allocation to obtain a local optimization scheme; and the overall processing capability of the server cluster is greatly improved.

The invention relates to the technical field of sewage treatment, and discloses a subsurface wetland system and a method for relieving wetland blockage. According to the subsurface wetland system provided by the invention, the wetland unit blockage monitoring system is additionally arranged, and the water inlet and outlet operation conditions of the blockage unit are automatically controlled, so that when the blockage unit operates at a low position, the degradation of organic matters among fillers is accelerated, the endogenous respiration of microorganisms is promoted to consume extracellular polymers or intracellular components, and blockages are dispersed when the water level rises; oxygen exchange and circulation of nutrient substances in the wetland are facilitated, a better environment is provided for growth of microorganisms, the activity of the microorganisms is conveniently improved, the purification capacity of the wetland is correspondingly enhanced, and pollutants in water can be better removed; blockages are dispersed by water flow, so that the wetland can be prevented from being degraded due to blockage, and the ecological health and sustainability of the wetland are kept; and as the wetland blockage is relieved, the service life of the wetland filler is prolonged, and the requirement of manual cleaning can be reduced to a certain extent, so that the maintenance cost is reduced.

The present invention relates to the technical field of heat exchangers, and specifically to a heat exchanger with a diversion structure, comprising a heat dissipation core, an upper water chamber and a lower water chamber, wherein the upper water chamber and the lower water chamber are respectively arranged above and below the heat dissipation core, a water inlet pipe is arranged on the front side of the upper water chamber, a water outlet pipe is arranged on the front side of the lower water chamber, and a guide plate is arranged on the rear wall of the upper water chamber and is distributed opposite to the water inlet pipe, wherein the guide plate comprises a first guide curved surface and a second guide curved surface, and a dividing line is formed between the first guide curved surface and the second guide curved surface. A partition plate located below the water inlet pipe is also arranged in the upper water chamber, and diversion holes of different sizes are arranged on the partition plate. A water flow distribution cavity is formed on the upper end surface of the heat dissipation core, and an adjustment plate is floatingly arranged in the water flow distribution cavity, and a small hole is arranged on the adjustment plate. The ingenious design of the guide plate, the partition plate and the adjustment plate in the present invention effectively improves the heat dissipation performance of the heat dissipation core. The synergistic effect of these components enables the heat dissipation core to maintain a stable heat dissipation effect during long-term use.

The invention discloses a folding rotating mechanism and a foldable baby carriage. The folding rotating mechanism comprises a base support rod, a first support rod, a second support rod and a connecting rod transmission assembly. The first support rod comprises a body, a first branch and a second branch, wherein the first branch and the second branch extend out of the upper end of the body. The first branch is rotationally connected with the base bracket rod; the second branch is rotationally connected with the second bracket rod, so that the first bracket rod and the second bracket rod are relatively unfolded or relatively folded; one end of the connecting rod transmission assembly is rotationally connected to the first branch, and the other end is connected with the second bracket rod; by the adoption of the technical scheme, two relatively independent rotating connection structures are formed and dispersed to two relatively independent positions, mutual interference is reduced, and balance and stability of the folding rotating mechanism are improved; therefore, when the first support rod and the second support rod are relatively unfolded or folded, a more stable geometric structure can be formed, and the stability of the folding rotating mechanism when bearing external force is improved.

The utility model relates to high pressure container technical field discloses a kind of transport vehicle LNG gas cylinder suitable for complex environment, including shell, the outside of shell is provided with buffer mechanism, the buffer mechanism is used to slow down inertia effect, the left side fixedly connected with sealing cover of shell, the bottom of shell is provided with fixed mechanism, the fixed mechanism is used to connect car body, the outside of sealing cover is provided with sealing mechanism, the bottom of shell is provided with heat exchange mechanism, the buffer mechanism includes two fixed rings, the inner wall of two fixed rings is fixedly connected in the outer wall of shell.In the utility model, the shell of gas cylinder is fixed by fixed ring, the cross rib provides support, the horizontal plate and side plate are connected with damping parts, front and back vibration is transmitted to hydraulic cylinder by hydraulic rod, while spring contraction slows down stress, reduces the vibration transmission and stress accumulation of vehicle, avoids temperature influence, improves the stability of whole.

The invention discloses a method and a device for generating a commodity pool based on a new machine recommendation algorithm of big data. The method comprises the following steps: constructing a basic view through a Spark framework; performing popularity quantitative evaluation through a commodity popularity scoring model, and respectively screening out hot-sell commodities and new commodities; performing data matching through an SQL linked table query operation, and generating an initial candidate commodity set and a quantity target value of each type of commodities; calculating to obtain a comprehensive score through a multi-objective optimization model; partition-level commodity filtering and optimization are carried out through a MapReduce programming model, and an optimized commodity candidate pool is obtained; performing commodity compliance verification according to items of the white list, and based on a forbidden list in the dimension list black list, adding just-needed categories according to scene requirements through reverse connection operation to obtain a final commodity candidate pool; and merging the commodity data in the final commodity candidate pool into a hive table for persistent storage. The problems that in the prior art, consumption behavior recognition is lacked, and the requirement of a special scene cannot be met are solved.

The invention relates to the technical field of diversion trenches, in particular to a rainwater confluence anti-scouring diversion trench device for a closure slope, which comprises a diversion cylinder, an annular diversion strip arranged in the diversion cylinder, a diversion plate and a diversion cylinder support plate fixedly arranged on the outer side surface of the diversion cylinder, a filter plate arranged on the diversion cylinder, and a mud blocking box arranged on the filter plate. The mud blocking box comprises a mud blocking base and a mud blocking plate, and a mud blocking net is fixedly arranged on the mud blocking plate. The annular flow guide strips arranged in the flow guide cylinder can guide water flow to form annular rotation, water flow deposition is avoided, the flow guide efficiency is improved, the flow guide holes are matched with the filter holes in the filter plate to be connected with the flow guide cylinder, impurities in rainwater can be intercepted, the mud blocking box on the filter plate can further intercept fine silt, blockage is reduced, and all parts of the whole device work cooperatively; from multi-stage filtration to stable diversion, rainwater is effectively prevented from scouring the closure slope, the slope environment is protected, the structure is reasonable, installation and maintenance are convenient, long-term stable operation can be achieved, and the operation cost is reduced.

The invention relates to the technical field of detection equipment, in particular to equipment for detecting genes of odor substances in water on site. The device comprises a sampling system and a suction filtration system, the sampling system comprises a mechanical arm, the suction filtration system comprises a suction filtration platform, the mechanical arm is installed on the suction filtration platform, a sampling device is installed at the bottom of the mechanical arm, at least four first through holes are symmetrically formed in the suction filtration platform, and suction filtration devices are installed in the first through holes; according to the device disclosed by the invention, accurate collection of samples and uploading of sample information are completed through the sampling system and the suction filtration system of the device, so that information such as sampling positions is more accurate, the labor cost is greatly saved, and the timeliness of the samples is improved; through the mechanical arm of the fluorescent quantitative PCR system of the device, accurate preparation of the quantitative PCR system is realized, and proper primers are selected, so that manual errors are reduced, and powerful guarantee is provided for in-situ recognition of olfactory genes and early warning of odor risks.

The invention provides a gradient doping method, which comprises the following steps of: transferring thickness gradient information of a photoresist layer to an ion implantation barrier layer by utilizing a photomask of which the light transmittance changes in a gradient manner along a preset direction and photoetching and etching processes, and realizing gradient doping of a substrate on the basis of the thickness gradient information to obtain a well or a channel with non-uniformly distributed current carriers; the problem of electric field concentration of the field effect transistor is reversely improved, so that the problem of leakage-induced barrier reduction caused by electric field distribution concentration in the short-channel field effect transistor is effectively solved, the electric field distribution of the device is optimized, excessive concentration of the electric field in a local area is avoided, and the performance and reliability of the device are remarkably improved.

The invention discloses electronic cigarette shell laser processing intelligent cutting equipment which comprises an equipment support, a rotating mechanism, a moving mechanism, a laser head, a sliding disc, a clamping mechanism and a workpiece, a supporting mechanism is arranged on the equipment support and comprises a supporting seat fixed to the equipment support, and the supporting seat is provided with a clamping mechanism. A gas cylinder is detachably arranged at the bottom of the supporting seat, and the two ends of the gas cylinder communicate with auxiliary mechanisms through gas conveying pipes. The effect of effectively preventing corner burning is achieved through the lifting mechanism and the auxiliary mechanism, when the corner portion of a workpiece is cut, gas in an auxiliary frame pushes a lifting plate to ascend, the lifting plate drives a fixing plate to ascend through a supporting rod, a clamping block on the fixing plate drives a laser head to ascend in advance, and the relative position of the laser head and the workpiece is changed; and excessive concentration of corner energy caused by traditional problems such as non-uniform laser energy distribution is avoided, so that the corner burning phenomenon is prevented, and the smoothness and the size precision of the cutting edge are ensured to meet the standard.

The invention provides a direction-angle-variable airspace management Web grid generation and drawing assembly and method, and aims to adapt to complex terrains and optimize the coverage of grids on geographic information by dynamically adjusting the grid direction and angle. The assembly comprises a user interface and visualization module, a self-adaptive terrain grid construction module and a coverage detection module. The user interface module integrates data and provides a graphical operation interface, the adaptive module dynamically adjusts the grid according to the terrain and user parameters, and the coverage detection module ensures that the grid meets the coverage requirement. According to the method, through real-time feedback, accurate rotation calculation, flexible adjustment of the size and the shape of the grid and accurate coverage detection, the efficiency and the precision of airspace management are remarkably improved.

The present invention relates to the field of information transmission technology, and in particular to a wireless data transmission system based on 5G communication and a method thereof. The method comprises the following steps: obtaining 5G communication data of an industrial park and performing communication demand analysis of a unit in the park to obtain communication demand data of the unit in the industrial park; performing virtual slice priority reallocation according to the communication demand data of the unit in the industrial park to obtain optimized virtual slice priority data; performing dynamic resource sharing strategy analysis according to the optimized virtual slice priority data to obtain a dynamic sharing strategy of communication resources in the industrial park; obtaining real-time 5G communication data of the industrial park and performing unit communication transmission latency evaluation to obtain unit communication transmission latency data; performing dynamic sharing timing optimization on the dynamic sharing strategy of communication resources in the industrial park based on the unit communication transmission latency data to obtain an optimized dynamic sharing strategy of communication resources in the industrial park. The present invention can improve the bandwidth utilization of the network.

An electrical interconnect structure and its formation method, as well as a panel-level packaging structure, are disclosed. The electrical interconnect structure includes: several conductive structures, the surfaces of which have been roughened to form micro-pit structures; and a molding compound layer covering the sidewalls of the conductive structures. The roughened sidewalls of the conductive structures form micro-pit morphologies. This three-dimensional porous structure significantly increases the actual contact area between the conductive structures and the molding compound layer, enabling a tight mechanical bond at the interface of the two dissimilar materials. After the molding compound layer completely covers the roughened sidewalls of the conductive structures, the molding compound material is embedded within the micro-pit structures, generating a significant anchoring effect and effectively suppressing interface delamination. When the packaging structure experiences temperature changes or is subjected to external mechanical loads, the increased interfacial adhesion can uniformly disperse stress, preventing excessive stress concentration at the interface between the conductive structures and the molding compound layer, thereby preventing the generation and propagation of cracks and significantly improving the long-term reliability and failure resistance of the packaging structure.

The invention discloses a drip irrigation tail end filter with a pressure adjusting function and an operation process of the drip irrigation tail end filter. The drip irrigation tail end filter comprises a shell, an end cover, a lamination filter set located in the shell, a flow guide assembly surrounding the outer side of the lamination filter set and a cleaning assembly located in the middle of the lamination filter set. A water outlet is formed in the top of the shell, a drain outlet is formed in the bottom of the shell, the bottom is communicated with a base, a screen sleeve is arranged in the middle of the base, and a water inlet is formed in the base; water flow entering the tail-end filter rises upwards in a spiral shape, the spiral water flow is uniformly dispersed on the laminated filter group through the flow guide assembly to be filtered, accumulation of impurities on the laminated filter group is effectively avoided, the service life of the laminated filter group is prolonged, and meanwhile, the cleaning assembly is matched to filter the water flow while the water flow is filtered, so that the service life of the laminated filter group is prolonged. The water inlet amount and the water outlet amount can be automatically controlled according to the pressure in the tail end filter, the stability of the pressure in the tail end filter is guaranteed while efficient filtering is achieved, and the stability of the water outlet amount is improved.

The invention discloses a method for cultivating carya illinoensis, which comprises the following steps of: before germination of a walnut tree, applying a base fertilizer into soil around the walnut tree by adopting a radial furrow method, and irrigating the root of the walnut tree; when the walnut tree sprouts, applying a compound fertilizer by adopting an annular furrow application method; applying the special controlled-release fertilizer for walnuts to the walnut trees once by adopting a radial furrow method from a flowering period to a growth mature period of the walnut trees. According to the method, the walnut trees are reasonably fertilized in each growth stage of the walnut trees through a radial strip ditch method and an annular ditch application method, the utilization rate of the soil for fertilization in different stages is improved, the situation that nutrients cannot be completely absorbed in a short time is avoided, and a large amount of nutrients are accumulated in the soil or permeate into the ground or fixed in the soil; the carya illinoensis tree body is poor in growth, and the yield of the carya illinoensis is influenced.

This application discloses a cryogenic liquid cargo storage tank and a vessel for transporting liquefied products. The cryogenic liquid cargo storage tank includes a tank wall, a leak-proof sealing layer, and a thermal insulation barrier. The leak-proof sealing layer includes multiple corrugated plates with flat and corrugated portions. The thermal insulation barrier includes multiple insulation modules, with the corrugated portions facing the insulation modules. Each insulation module includes multiple accommodating spaces for housing the corrugated portions, and slits are provided in the areas of the accommodating spaces that support the corrugated portions. The vessel includes a hull and the aforementioned cryogenic liquid cargo storage tank disposed within the hull. By providing slits in the support areas of the insulation modules, this application effectively alleviates the concentrated stress transmitted to the insulation modules due to corrugated plate deformation, thereby protecting the insulation modules from damage and improving the structural integrity of the thermal insulation barrier and the reliability of the storage tank.

The utility model discloses a safe double-sided PCB circuit board, and specifically relates to the technical field of PCBs. The safe double-sided PCB comprises a heat-conducting plate layer, the heat-conducting plate layer is made of copper or other high-heat-conductivity materials, base layers are fixed to the two sides of the heat-conducting plate layer, copper foil layers are fixed to the sides, away from each other, of the two base layers, and solder mask layers cover the sides, away from each other, of the two copper foil layers. Electrical components are located on the solder mask layer, the base layer is made of glass fiber reinforced epoxy resin and has excellent insulation performance and mechanical strength, a circuit is etched on the copper foil layer, wires and connection points in the circuit can be formed, and electrical connection between electronic components is achieved. The safety type double-sided PCB provided by the utility model can prevent heat from being excessively concentrated in a local area, thereby reducing the probability that electrical elements are damaged due to high temperature, and enabling the use of the PCB to be safer.

The invention discloses a scientific and technological innovation management system based on big data analysis, which relates to the technical field of big data services and comprises a data collection module, a processing module, an analysis module, a calculation management module and an identification module. According to the method, factors such as professional backgrounds and working experience of the scientific researchers can be comprehensively considered, the efficiency of the scientific researchers can be evaluated more accurately, managers can better understand the actual ability and contribution of the scientific researchers, reasonable allocation of scientific research project resources can be achieved through optimization analysis, and the scientific research project efficiency can be improved. The scientific research project can obtain enough resource support, waste and idleness of resources are avoided, the efficiency of researchers, resource configuration of the scientific research project and the actual utilization condition of the scientific research resources can be comprehensively considered, the comprehensive utilization rate of the scientific research resources is evaluated, and the scientific research project resource utilization rate is improved. Managers can understand the overall utilization efficiency and existing problems of scientific research resources, and a scientific basis is provided for further optimal configuration and efficient utilization of the resources.

The utility model discloses an efficient emission air conditioner baffle structure which comprises a baffle, an air guide piece and a connecting arm, one end of the connecting arm is connected to the baffle, and the other end of the connecting arm is connected to the top end of an air conditioner in a hung mode. An air outlet part is arranged at the edge position of the baffle, the air guide blades are hinged to the air outlet part, the air guide blades are matched to form an air guide channel, the baffle faces an air outlet of the air conditioner, and airflow blown out of the air outlet flows to the air outlet part along the baffle and is guided in the direction through the air guide blades of the air outlet part. The device has the advantages of simple structure, compact matching, reasonable design and the like; therefore, the device is a product with excellent technical and economical performance. The structure comprises a baffle plate, an air guide sheet and a connecting arm, wherein the baffle plate is hung on the air conditioner through the connecting arm; when air flow blown out of the air outlet of the air conditioner is blown to the baffle, the air flow can be diffused into all the air outlet parts of the baffle, meanwhile, the air outlet parts are provided with shaft rods, the shaft rods are connected with air guide pieces in a buckled mode, the air guide pieces can rotate with the shaft rods connected with the air guide pieces as rotation centers, the air outlet angle is further adjusted, the diffusion range is enlarged, the efficient diffusion effect is achieved, and indoor temperature adjustment is facilitated.

The invention provides a fuel plan optimization method, device and equipment and a medium, and belongs to the technical field of energy supply optimization. The method comprises the steps that based on variable fuel supply quantities of different supply modes of an energy supply plant, with the minimum inventory growth difference rate as the target, a fuel plan optimization scheduling target function is constructed, and constraint conditions of the fuel plan optimization scheduling target function are determined; performing optimization solving on the fuel plan optimization scheduling objective function, and determining the optimal fuel variable supply quantity of different supply modes of the energy supply plant meeting the constraint condition; and the optimal variable fuel supply quantities of the different supply modes of the energy supply plant are sent to the energy supply plant, so that the energy supply plant adjusts a fuel purchase plan according to the optimal variable fuel supply quantities of the different supply modes of the energy supply plant. According to the invention, multi-aspect optimization of inventory, resources, purchase and operation is realized, so that the operation efficiency and economic benefits of the energy supply plant are improved.

The application relates to the technical field of mineral spring mineralization equipment, in particular to a mineralization filter core component, a filter core device and mineral spring mineralization equipment. The mineralization filter core component comprises a shell, the inside of the shell is provided with a pre-filter cavity and a mineralization filter cavity, the pre-filter cavity and the mineralization filter cavity are relatively isolated and are communicated through a pressure conducting component, the pressure conducting component is conducted under the action of water flow pressure to make the pre-filter cavity and the mineralization filter cavity be in series connection; the pre-filter cavity is provided with pre-filter material, the mineralization filter cavity is provided with mineralization filter material, the shell is provided with a water inlet interface and a water outlet interface, the water inlet interface is communicated with the pre-filter cavity, and the water outlet interface is communicated with the mineralization filter cavity. The mineralization filter core component, the filter core device and the mineral spring mineralization equipment provided by the application can effectively prevent the mineralization water concentration discharged from the mineralization filter core component from exceeding the standard because the pre-filter cavity and the mineralization filter cavity are relatively isolated, the volume of high-concentration mineralization water is small, and the high-concentration mineralization water can be quickly diluted.

The invention discloses a new energy bus leasing method based on the Internet of Things, and relates to the technical field of vehicle leasing. The invention predicts demand concentration, identifies high-demand groups in adjacent areas, and simultaneously merges and plans routes of multiple groups to generate shared routes, thereby reducing empty driving and low-load phenomena of vehicles. Meanwhile, after introducing an adaptability index and a site priority mechanism, the invention responds to demand changes and traffic conditions on the route in real time, automatically adjusts the driving route and the sequence of sites, and provides efficient and convenient dispatching services when demand is high. The invention dynamically adjusts the rental price based on demand density, route cost and dispatching pressure, raises the price during peak hours to balance supply and demand, and provides discounts during low-demand hours to attract users to travel during off-peak hours, thereby avoiding excessive concentration of resources and improving overall profitability. Through intelligent dispatching and real-time information push, the travel experience of users is improved, the anxiety about itinerary changes is eliminated, and the transparency of travel services is enhanced.

The invention provides a shared bicycle brand identification and density optimization method based on NSGA-III algorithm driving, relates to the field of shared bicycle brand identification management, and realizes intelligent management of shared bicycles through combination of multi-source heterogeneous data acquisition, an image identification technology and an NSGA-III algorithm. Firstly, images and position data of shared bicycles are acquired by using monitoring equipment, brand identification is performed through a deep learning model, and then a density value of shared bicycle brand distribution is calculated based on the brand and position data; multi-objective optimization is carried out through an NSGA-III algorithm, distribution of the shared bicycles is dynamically adjusted, excessive concentration of the shared bicycles of a specific brand is avoided, traffic jam is reduced, a scheduling strategy of the shared bicycles is optimized, and the utilization efficiency of the shared bicycles and urban traffic mobility are improved.

The utility model relates to the technical field of machine manufacturing, in particular to a rapid positioning and clamping tool for a stamping die. The punching device comprises a workbench body, a hydraulic device is fixedly connected to the top of the workbench body, a punching frame is fixedly connected to the end, away from the workbench body, of the hydraulic device, a punching block is fixedly connected to the bottom of the punching frame, a positioning assembly is arranged at the top of the workbench body, and a clamping assembly is slidably connected to an inner cavity of the positioning assembly. The clamping assembly comprises a sliding block sliding on the surface of the positioning assembly, and a sliding groove is formed in the surface of the sliding block. The sliding block drives the anti-skid clamping plate to provide pre-tightening force, it is guaranteed that the plate is accurately positioned before stamping, in the stamping process, the damper can automatically stretch out and draw back along with displacement generated by thinning of the plate, the pressure of the anti-skid clamping plate on the plate is adjusted in real time, excessive concentration of the clamping force is avoided, and the stamping quality is improved. And meanwhile, the situation that the edges of the plates are extruded to generate wrinkles and wave-shaped deformation due to excessive clamping force is avoided.

The invention provides a simulated annealing algorithm and gravity operation-based chip layout method, a medium and equipment. The method comprises the following steps of: forming a typesetting block diagram and a chip block diagram according to a typesetting area and the size of a to-be-laid chip; iteratively updating the layout scheme of the chip block diagram based on an annealing algorithm until a global optimal layout scheme is output; the process of updating the layout scheme comprises the following steps: sequentially carrying out disturbance processing and gravity operation in the current layout scheme; the gravity operation comprises the following steps: moving a chip block diagram in the typesetting block diagram to a first gravity point; moving chip block diagrams outside the typesetting block diagram to a second gravity point or a third gravity point; the first gravity point is any vertex of the typesetting block diagram, and the second gravity point and the third gravity point are vertexes sharing the same edge with the first gravity point respectively. According to the invention, based on the framework of the existing simulated annealing algorithm, the updating efficiency of the layout scheme is accelerated through the set gravity operation, and the number of iterations and the layout time can be effectively reduced.

The invention discloses a multi-target oriented parallel fuzzy test method and system based on seed characteristics. The method comprises the steps of dividing tasks of test engines, obtaining seeds for fuzzy testing, recording the triggering times of basic blocks, taking the triggering times as evaluation indexes of exploration difficulty, and screening out a target set according to the exploration difficulty; dividing the seeds into three types according to execution characteristics of the seeds; for different classifications, setting a specific guiding rule to adjust the selection probability and variation times of the seeds; and performing parallel fuzzy testing according to the adjusted selection probability and variation times. According to the method, while concentrated exploration of areas with high difficulty is ensured, wide testing of other parts of a task is kept. By balancing deep exploration and wide testing, the use efficiency of testing resources is improved, the situation that a testing engine is excessively concentrated in a complex area and ignores other areas possibly containing defects is prevented, and therefore the overall effect and efficiency of the parallel fuzzy testing system are improved.

The invention relates to the field of heat recovery, in particular to a power plant steam turbine drainage heat recovery device which comprises a shell, a plurality of exhaust holes are formed in the side wall of the shell, a transmission shaft is rotatably connected to the interior of the shell in a penetrating mode, a rotating roller is fixedly connected to the side wall of the transmission shaft, and a plurality of impellers are fixedly connected to the side wall of the rotating roller at equal angles. An adjusting assembly is fixedly installed on the side wall of one side of the shell, an auxiliary assembly is fixedly installed on the side wall of the other side of the shell, and a conversion assembly is fixedly installed on the inner top wall of the shell. By arranging the adjusting assembly, after high-pressure steam is guided into the shell through the air inlet pipe, an electric push rod is started to drive a baffle to do reciprocating motion, the high-pressure steam is sprayed out through rectangular holes formed in the baffle and a plurality of adjacent first nozzles, and through reciprocating motion of the baffle, the steam is sprayed out through the first nozzles in different directions; high-temperature hot air cannot be excessively concentrated at the air inlet, and excessive concentration of heat is avoided.