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352results about How to "High implementability" patented technology

On-orbit collision avoidance method and device for constellation system

The invention relates to the field of satellite operation, and discloses an in-orbit collision avoidance method and device for a constellation system, and the method comprises the steps: enabling a ground system to obtain the ephemeris information of a constellation satellite and space debris; the ground system evaluates the first collision risk of the satellite in the first period time in the future according to the ephemeris information of the constellation satellite and the space debris; when the first collision risk is greater than a first threshold value, the ground system uploads ephemeris information of the space debris to a satellite; the satellite updates a second collision risk in a second period time in the future in real time based on the received space debris ephemeris information and the satellite positioning information; when the second collision risk is greater than a second threshold value, the satellite formulates a corresponding collision avoidance strategy, and orbital maneuver is carried out according to the collision avoidance strategy; and after the avoidance is completed, the satellite actively maneuvers and returns to a nominal position corresponding to satellite ephemeris information, and the connection with the ground system is recovered. According to the invention, the accuracy of collision risk assessment is improved, and the implementability is improved.
Owner:SHANGHAI SPACECOM SATELLITE TECH LTD

Prestress reinforcing device for newly-built concrete pole

The invention relates to a newly-built concrete electric pole prestress reinforcing device, and belongs to the technical field of power transmission line engineering, the newly-built concrete electric pole prestress reinforcing device comprises an electric pole body, a prestress assembly is installed on the electric pole body, the prestress assembly comprises a connecting hoop and an adjusting assembly, and the connecting hoop is installed at the top end of the adjusting assembly; the adjusting assembly comprises four hinge rods which are sequentially connected end to end to form a parallelogram structure and arranged outside the electric pole body in a sleeving mode, a hinge piece is installed at the connecting position of any two connected hinge rods, and the ends of the hinge rods and the hinge pieces are installed in a hinged mode. A pair of pulleys installed on the electric pole body is further arranged between the connecting hoop and the adjusting assembly, the two U-shaped connecting blocks are both connected with steel twisted ropes, and the free ends of the steel twisted ropes penetrate through the through holes, bypass the pulleys and then are fixedly connected with the connecting hoop. Tensioning and applying of prestress can be achieved, the strength and the anti-overturning capacity of the concrete electric pole are effectively improved, and the service life of the concrete electric pole is effectively prolonged.
Owner:STATE GRID FUJIAN POWER ELECTRIC CO ECONOMIC RESEARCH INSTITUTE +1

Carbon peak-reaching path planning method, system and equipment considering energy conservation and carbon reduction cost

The invention provides a carbon peak-reaching path planning method, system and equipment considering energy conservation and carbon reduction cost, and is applied to the technical field of energy conservation and environmental protection. The method comprises the following steps: for a carbon peak-reaching planning period, considering the energy activity of a planning area and the carbon emission influence of industrial production, and constructing a carbon emission model; considering the influence of energy conservation and carbon reduction on the economy of the planning area, and constructing a carbon emission economic disturbance model; taking minimization of carbon emission of the planning area and economic disturbance of the carbon emission as targets, and based on a carbon emission model of the planning area, a carbon emission economic disturbance model and a coupling relation between the carbon emission and economic indexes, constructing a carbon peak multi-target optimization model; based on an improved multi-target firefly algorithm, carrying out optimization solution on the carbon peak reaching multi-target optimization model of the planning area; and planning a carbon peak-reaching path of the planning area in the carbon peak-reaching planning period based on a solving result. According to the invention, the problem of poor implementability of the existing carbon-to-peak path is solved.
Owner:STATE GRID INFORMATION & TELECOMM BRANCH

Polyphenylene sulfide fiber composite insulation paper and preparation process thereof

The invention relates to the technical crossing field of polyphenylene sulfide fiber paper, special papermaking and insulation paper, in particular to high-temperature-resistant polyphenylene sulfide fiber composite insulation paper and a preparation process thereof. The high-temperature-resistant polyphenylene sulfide fiber composite insulation paper with a dense structure similar to reinforcing steel bar-mortar is prepared by preferably selecting the polyphenylene sulfide fiber with higher cost performance as a raw material and taking the aramid fibrid as a filling agent and an adhesive and adopting a wet papermaking process. The prepared composite paper has excellent temperature resistance and chemical corrosion resistance, the production process flow is short, the production process is free of pollution, the industrial production cost of the composite paper can be reduced, the temperature resistance and chemical stability of medium-and-low-end application insulation paper are improved, the application field of the composite paper in a more severe environment is widened, and the composite paper has good application prospects. Good economic benefits and application values are realized.
Owner:SHAANXI UNIV OF SCI & TECH

New energy station multi-band oscillation risk online assessment and early warning method and storage medium

The invention discloses a new energy station multi-band oscillation risk online evaluation and early warning method and a storage medium, and the method comprises the steps: carrying out the frequency sweeping to obtain the frequency domain impedance characteristics of fans and photovoltaic equipment of various models in a new energy station under different typical working conditions, and carrying out the frequency sweeping to obtain the frequency domain impedance characteristics of a power grid under different typical working conditions; the power flow level of the new energy station and the power grid side is monitored online, the working condition types of a new energy unit and the power grid are judged according to online monitoring data, and a new energy station equivalent impedance model is established according to the impedance characteristics of fans and photovoltaic equipment of various models of the new energy station and the station topology. And on-line evaluation of oscillation risks is carried out based on the Nyquist criterion. And selecting whether to send an oscillation alarm signal based on the evaluation result. According to the method, the multi-band oscillation risk of the new energy station can be effectively evaluated and early warned, and safe and stable operation of the new energy station is ensured.
Owner:POWER RES INST OF STATE GRID SHAANXI ELECTRIC POWER CO LTD +1

Close-shot three-dimensional reconstruction method, device and equipment based on 3DGS

The invention relates to the technical field of three-dimensional reconstruction, and discloses a close-range three-dimensional reconstruction method, device and equipment based on 3DGS. The method comprises the following steps: annularly shooting a target close shot based on image acquisition equipment to obtain a photo set; performing three-dimensional reconstruction according to the photo set by adopting a 3DGS technology to obtain a 3DGS model; reading point cloud file information of the 3DGS model, and performing format conversion on the point cloud file information to obtain general three-dimensional grid model data; and performing three-dimensional rendering based on the general three-dimensional grid model data to visualize the target close shot. According to the method, a finer three-dimensional model is formed in a scene of a close-range model by means of the capability of the 3DGS technology in three-dimensional reconstruction. According to the method, format conversion is additionally carried out on the ply point cloud file information generated by the 3DGS model, standardized general three-dimensional grid model data are formed, and the problem that a traditional ply point cloud has an obvious needling shape in a close-range mode and is not suitable for engineering application is solved.
Owner:HANGZHOU GAODE DIGITAL TECHNOLOGY CO LTD

Electric power communication network joint optimization method and electronic equipment

The invention provides an electric power communication network joint optimization method and electronic equipment, and belongs to the technical field of resource regulation and control. The method comprises the following steps: determining communication cost information of a power network according to the data volume of each data node in a communication network and a pre-constructed communication network equivalent model; determining generator scheduling cost information and load aggregator scheduling cost information of the power network according to the operation standby adjusting power of each generator in the power network, the operation standby adjusting power of each load aggregator and a pre-constructed power network model; and determining target total scheduling cost information of the power network according to the communication cost information, the generator scheduling cost information, the load aggregator scheduling cost information and a pre-constructed power communication network joint optimization model. According to the invention, the method can achieve the effects of reducing the power resource scheduling cost, improving the response speed and accuracy of power resource scheduling, and improving the implementability of power resource scheduling.
Owner:UNIV OF MACAU

Super-capacitor-based flicker suppression method for network construction type STATCOM (Static Synchronous Compensator)

The invention relates to a super-capacitor-based flicker suppression method for a network construction type STATCOM (Static Synchronous Compensator). The method comprises the steps of network construction outer ring control, fundamental current control and harmonic current control, a virtual synchronous machine VSG control algorithm is adopted for network construction outer ring control, the frequency modulation characteristic and the inertia damping characteristic are decoupled, and the suppression of the active power high-frequency fluctuation quantity through a super capacitor serves as an effective means for flicker suppression; load harmonic current control open-loop control and closed-loop control are combined to achieve an optimal control effect, a first-order differential link and a second-order low-pass filter are cascaded to serve as a correction link, open-loop control gain is improved, resonance between a passive filter and a power grid is suppressed, a second-order low-pass filter link is added to reactive power of a PCC (point of common coupling), and the optimal control effect is achieved. The problem of harmonic amplification caused by the fact that the fundamental reactive power compensation speed is too high and conflicts with a harmonic rapid compensation link is avoided; the flicker suppression effect and the harmonic compensation rate are improved, and pollution of an arc load to a power grid is reduced.
Owner:RONGXIN HUIKO ELECTRIC TECH CO LTD

Alkaline cyanide-free cadmium plating process for ultrahigh-strength steel parts

The invention discloses an alkaline cyanide-free cadmium plating process for an ultrahigh-strength steel part. The alkaline cyanide-free cadmium plating process comprises the steps of oil removal, stress elimination, electrolytic oil removal, flowing water washing, weak corrosion, flowing cold water washing, copper pre-plating, flowing cold water washing, alkaline cyanide-free cadmium plating, flowing water washing, hydrogen removal, aftertreatment, drying and inspection. In order to avoid the situation that the metal surface of the workpiece is passivated in a plating tank, the pretreatment process is adopted, a cyanide-free copper electroplating layer is pre-plated on the surface of the workpiece, the surface of the part is adjusted, the surface activity is improved, and then the binding force of a base body and the plated cadmium is improved; according to the method, a stress eliminating process and a long-time hydrogen removing process after plating are adopted before plating, so that the hydrogen embrittlement risk is reduced, the process steps are simple, and the implementation is high.
Owner:CHINA HANGFA SOUTH IND CO LTD

Mountain terrain analysis and photovoltaic optimization arrangement method based on unmanned aerial vehicle images

The invention relates to the technical field of terrain analysis, in particular to an unmanned aerial vehicle image-based mountain terrain analysis and photovoltaic optimization arrangement method, which comprises the following steps of: performing aerial photography on a target mountain land by using an unmanned aerial vehicle, acquiring terrain image data, importing the image data into three-dimensional modeling software, and generating a three-dimensional terrain model; carrying out gradient, slope direction and shadow analysis based on the three-dimensional terrain model, determining an optimal arrangement area of the photovoltaic module, combining satellite image data, identifying and eliminating areas which are not suitable for development, designing an arrangement scheme of the photovoltaic module, carrying out simulation and verification in the three-dimensional model, and carrying out data acquisition by using the unmanned aerial vehicle again in a project acceptance stage. And generating a three-dimensional point cloud model of the actual construction condition, analyzing the inclination angle, the azimuth angle and the shadow shielding condition of the photovoltaic module based on the actual three-dimensional point cloud model, and evaluating the power generation loss. According to the invention, the arrangement scheme of the photovoltaic system is optimized, the power generation efficiency is improved, and an efficient quality acceptance means is provided.
Owner:CHINA POWER INVESTMENT POWER ENG CO LTD

Transmitting line asymmetric fault distance protection method based on new energy negative sequence voltage suppression

The invention discloses a new energy negative sequence voltage suppression-based sending-out line asymmetric fault distance protection method. The method comprises the following steps of 1, detecting a voltage drop abrupt change signal and a negative sequence voltage signal of a new energy sending-out end to start asymmetric fault distance protection; 2, detecting a current break variable and a zero-sequence component of a new energy sending-out end, and carrying out fault type discrimination; 3, reading measured impedance of an impedance relay according to the fault type; 4, calculating an additional impedance phase angle of the measured impedance based on new energy negative sequence voltage suppression; 5, calculating fault distance impedance according to the sine theorem; and 6, carrying out internal and external fault judgment, protection action or locking. According to the method, the fault position can be calculated only by using the single-end measurement quantity of the protected line, and the method is not influenced by transition resistance. Meanwhile, negative sequence voltage suppression of new energy is considered, and a calculation method for measuring an additional impedance angle in impedance is provided. Compared with a traditional distance measurement type distance protection scheme, the method is suitable for a new energy sending-out system, the principle is simple, and practicability is high.
Owner:XI AN JIAOTONG UNIV +1

A pad printing type coating device for metal packaging container manufacturing process

A pad printing type re-coating device for the manufacturing process of metal packaging containers. The present invention is to solve the problems that the existing spraying technology will cause air pollution and affect the health of workers, and the brushing will cause uneven re-coating and missing re-coating points. Technical points: The features include a frame, a rotating shaft, a swing arm, a driving arm, a driver, a pad printing cylinder, a pad printing head, a coating tank, a dip plate, a dip plate cylinder and a liquid replenishing tank. The rotating shaft is rotatably matched on the frame, the swing arm is fixed on the rotating shaft, one end of the driving arm is fixed on the rotating shaft, the driver is installed on the frame, and the driver is connected to the other end of the driving arm. A horizontal pad printing cylinder is installed on the inner side of the swing arm, and the pad printing head is installed on the pad printing cylinder and is on the outer side of the swing arm. The coating tank is fixed on the frame, and there is a dip plate that moves up and down at the top of the coating tank. A dip plate cylinder is installed on the frame, and the dip plate cylinder is connected to the top of the dip plate. The dip plate cooperates with the pad printing head. The liquid replenishing tank is installed on the frame and has a coating delivery pipe with the coating tank.
Owner:SHANTOU SHINYI CAN-MAKING MASCH CO LTD

Fast universal passive macro-modeling method based on Hamiltonian matrix pure virtual feature values

The invention discloses a fast universal passivity macro-modeling method based on Hamiltonian matrix pure virtual feature values. The method comprises the steps that n-port passive network parameters obtained through simulation or measurement serve as an original data set; rational fitting is carried out on the passive data set, and a macro model is established; calculating a pure virtual characteristic value of a Hamiltonian matrix M of the macro model, and judging the passivity of the macro model; carrying out passivity repair on the initial model according to a passivity judgment result; and inputting the passive macro model into a circuit simulator for simulation. According to the method, only the pure virtual feature value of the Hamiltonian matrix is calculated to achieve rapid passivity detection of the macro model, the method is suitable for macro modeling of symmetric and asymmetric models, the method has the characteristic of universality, and when the method is applied to integrated circuit design, the convergence of circuit simulation can be improved, the macro modeling time is shortened, the circuit simulation is accelerated, and the circuit simulation efficiency is improved. And the design and market period of electronic products is shortened.
Owner:SHANGHAI JIUTONGFANG TECHNOLOGY CO LTD

Alkali-containing wastewater zero discharge device for hydrogen production through water electrolysis

The utility model discloses an alkali-containing wastewater zero discharge device for water electrolysis hydrogen production, which comprises a hydrogen side water seal device, a hydrogen side degassing device, a waste alkali collecting tank, a waste alkali pump, an oxygen side water seal device and an oxygen side degassing device, and a hydrogen side liquid phase outlet pipeline of the hydrogen side degassing device goes down and extends into the waste alkali collecting tank; an oxygen side liquid phase outlet pipeline of the oxygen side degassing device descends downwards and extends into the waste alkali collecting tank; an emptying pipeline of the waste alkali collecting tank is communicated with the atmosphere, the waste alkali pump goes down a slope through an inlet pipeline and extends into the waste alkali collecting tank, and an outlet of the waste alkali pump is communicated with any one of the water supplementing tank, the alkali preparing tank or the alkali transporting tank car. On the premise that safety is guaranteed and investment and occupied space are saved, alkali-containing wastewater is recycled to serve as a raw material, zero emission of the alkali-containing wastewater is achieved, and meanwhile, by designing a centralized alkali-containing wastewater collecting system, the waste water is recycled, and the cost is reduced. The hydrogen-side alkali-containing wastewater and the oxygen-side alkali-containing wastewater enter a wastewater collection system after hydrogen and oxygen are removed through respective water seals and degassing devices, and explosive gas formed by mixing of hydrogen and oxygen is avoided.
Owner:SHANGHAI HOTO PETROCHEM ENG

Downlink spectrum efficiency and energy efficiency joint optimization method of cellular-removed large-scale MIMO system

The invention discloses a downlink spectrum efficiency and energy efficiency joint optimization method for a cellular-removed large-scale MIMO system, and the method mainly comprises the steps: obtaining an expression of downlink spectrum efficiency and energy efficiency of the system based on the cellular-removed large-scale MIMO system, and defining an expression of resource efficiency; according to the method, a resource efficiency maximization optimization problem is established, then a continuous convex approximation technology is utilized to convert an original problem into standard geometric programming, finally, an obtained geometric programming problem is solved based on golden search method iteration, and an optimal downlink transmission power distribution scheme is obtained. According to the invention, the downlink transmission power is optimized by using the channel statistical information, the spectrum efficiency and the energy efficiency of the decellular large-scale MIMO system are improved at the same time, the compromise between the spectrum efficiency and the energy efficiency is effectively realized, and the utilization rate of wireless resources in the decellular large-scale MIMO system is improved.
Owner:NANJING UNIV OF POSTS & TELECOMM

Fault diagnosis method and system for fuel injector of hybrid power system engine

The invention belongs to the technical field of diesel engines, and provides a fuel injector fault diagnosis method and system for a hybrid power system engine, when the engine reports a fuel injection quantity deviation fault and the torque of the engine reaches a preset torque, a first cylinder of the engine is controlled to be broken, and a theoretical torque after the cylinder is broken is obtained; comparing the actual torque and the theoretical torque of the motor to obtain a torque deviation; then, if it is judged that the torque deviation is smaller than the preset deviation, it is affirmed that the oil sprayer of the first cylinder breaks down; otherwise, other cylinders of the engine are cut off in sequence until the position of the cylinder corresponding to the fault of the fuel injector is determined. The motor is matched with the engine to break the cylinder, whether the fuel injector breaks down or not and which fuel injector breaks down are judged through the torque, the requirement for the fault occurrence degree is low, no complex algorithm is needed, cost is low, practicability is high, implementation is easy, judgment is accurate, and compared with the prior art, the method can be faster and more efficient. And which oil injector has a fault can be accurately judged.
Owner:WEICHAI POWER CO LTD

Preparation method and preparation system of p-xylene

The invention provides a p-xylene preparation method, which comprises: (1) feeding a naphtha raw material to a first reaction zone, and carrying out a first catalytic reaction in the presence of a first catalyst to obtain a first material flow containing benzene, toluene, p-xylene and by-products; (2) feeding benzene, toluene and methanol to a second reaction zone, and carrying out a second catalytic reaction in the presence of a second catalyst to obtain a second material flow containing benzene, toluene, p-xylene and by-products; (3) sending the first material flow and / or the second material flow to a separation system for separation to obtain a benzene-rich component, a toluene-rich component, and a p-xylene-rich component and a byproduct-rich component which are used as products; and (4) returning the separated benzene-rich component and toluene-rich component to the step (2) as the sources of benzene and toluene. The invention further provides a corresponding preparation system. According to the preparation method and the preparation system, the naphtha raw material and the methanol are used for preparing the p-xylene, the product distribution is adjusted, and the selectivity of the p-xylene is remarkably improved.
Owner:CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD +1

Diversion tunnel plugging device

The utility model discloses a diversion tunnel plugging device which comprises a rock body, a diversion tunnel is arranged in the rock body, a plugging plate is arranged outside the diversion tunnel at the front end of the rock body, mounting through holes are formed in the edge of the interior of the plugging plate, and an embedded anchor rod is arranged in the rock body on the outer side of the diversion tunnel. And a fastening screw sleeve is arranged outside the pre-embedded anchor rod at the front end of the plugging plate. A plugging assembly is arranged outside a diversion tunnel at the front end of a rock mass, pre-embedded anchor rods are pre-embedded in the rock mass on the outer side of the diversion tunnel at equal intervals during plugging operation of the diversion tunnel, a plugging plate is positioned on the outer side of the diversion tunnel during plugging of the diversion tunnel, and meanwhile mounting through holes formed in the inner edge of the plugging plate correspond to the pre-embedded anchor rods one to one and are connected to the outer portions of the pre-embedded anchor rods in a sleeving mode. And then the fastening thread sleeve is connected to the outer portion of the pre-embedded anchor rod in a sleeving mode and screwed down, the purpose that the plugging plate is stably installed on the outer side of the diversion tunnel to plug the diversion tunnel can be achieved, and the structural strength of connection of the plugging plate and the rock mass is improved.
Owner:SINOHYDRO ENG BUREAU 4

Composite rectification control and guidance method for improving hydrodynamic mixing flow state of river channel intersection area

PendingCN119287816AIncrease the cross-sectional area of ​​the waterreduce conversionBreakwatersQuaysRiver routingMixed flow
The invention discloses a composite rectification control and guidance method for improving the mixing flow state of a river channel intersection area. The method comprises the following steps that in the flood season and the dry season, the river width and the water depth of a branch flow intersection and the river width and the water depth of a downstream section of a main flow intersection are surveyed respectively; inner elliptic arc treatment is conducted on the positions, close to the intersection position of the water flow separation area embankment line and the main flow intersection opening, of the branch flow intersection openings; outer elliptic arc treatment is conducted on the intersection position, away from the water flow separation area embankment line and the main flow intersection opening, of the branch flow intersection opening; a lifting spur dike is arranged at the position of a water flow acceleration area at the downstream of the main stream intersection; in the dry season, the spur dike is lifted; in the flood season, the spur dike descends, and main stream flood discharge is facilitated. The flood discharge efficiency of the river channel in the flood season is improved, the flood threat faced by dikes on the two banks in the flood season is reduced, and the concentration of water pollutants on the bank side of the downstream water flow separation area of the intersection is reduced.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES CO LTD

Sealing tank for producing water-based paint

The utility model discloses a water-based paint production sealing tank which comprises a bottom plate, a tank body is arranged on one side of the top end of the bottom plate, supporting legs are arranged at the bottom end of the outer side of the tank body, a discharging port is formed in the bottom end of the tank body, and a servo motor is arranged in the middle of the top end of the tank body. A driving shaft is arranged at the output end of the servo motor, and a sealing shaft sleeve is arranged in the middle of the top end in the tank body. A cleaning assembly is arranged at the top end of the side wall of the tank body, after the sealing tank is used, water in a water tank is pumped through a cleaning pump and conveyed into a cleaning pipe through a water conveying pipe, and then the water is evenly sprayed into the sealing tank through cleaning nozzles which are evenly arranged on the inner side of the cleaning pipe and communicate with the interior of the tank body for cleaning operation without dead corners; and the sealing tank does not need to be transferred and moved to a specified cleaning position or detached for cleaning, so that the purpose of quickly and efficiently cleaning the residual water-based paint in the sealing tank is achieved, and the practicability is high.
Owner:COSCO KANSAI PAINT SHANGHAI CO LTD

Method and system for detecting leakage of urban gas pipeline

The invention provides an urban gas pipeline leakage detection method and system, and relates to the technical field of pipeline leakage localization, and the method comprises the steps: building a gas pipeline mathematical model between adjacent pressure regulating stations; discretizing the gas pipeline inlet and the gas pipeline outlet to obtain a discretized data model for describing the gas pipeline inlet and the gas pipeline outlet; actual signals are collected; de-noising correction is carried out on the actual signal; inputting the corrected actual flow into the discretization data model according to the position of the discrete node to which the actual flow belongs, and outputting model prediction pressure; calculating a pressure difference value between the model prediction pressure of the gas pipeline outlet and the corrected actual pressure; calculating an average pressure difference value by combining a dynamic time window determined based on the Bayesian theorem under the condition that the pressure difference value is greater than a preset difference value, entering the next step under the condition that the average pressure difference value is greater than the preset difference value, and otherwise, returning to collect the actual signal again; and determining the leakage position of the gas pipeline. And the gas pipeline monitoring efficiency and the leakage position positioning accuracy are improved.
Owner:ALTAY SPECIAL EQUIP INSPECTION & TESTING INST

Operation and maintenance cost prediction method and system, storage medium and program product

The invention discloses an operation and maintenance cost prediction method and system, a storage medium and a program product, and the method comprises the steps: dividing historical data into a high-cost data set and a low-cost data set; determining a preposed symptom sequence of the high-cost event; retrieving a feature fragment of which the similarity with the preposed symptom sequence is greater than a preset threshold value in the low-cost data set; generating a bifurcation point data table based on the similar feature fragments; performing feature distance calculation on the operation data acquired in real time and the bifurcation point data table to obtain a feature distance matrix; calculating probability weights of the operation data obtained in real time on different cost evolution paths in the bifurcation point data table based on the characteristic distance matrix; generating a plurality of cost evolution branches according to the probability weight; calculating the goodness of fit between each cost evolution branch and historical data; and performing weighted calculation on each cost evolution branch based on the goodness of fit to obtain an operation and maintenance cost prediction result. According to the invention, the deviation between the prediction result and the actual operation and maintenance cost is reduced, and the accuracy of operation and maintenance cost prediction is improved.
Owner:BEIJING HUAQING ANTAI NEW ENERGY TECH DEV

Stamping die for automobile brake disc

The utility model discloses a stamping die for an automobile brake disc. The stamping die comprises a table body, a hydraulic cylinder is arranged at the top end of the table body in a penetrating mode, a control table is arranged on one side of the table body, a lower die base is arranged at the bottom of the inner side of the table body, a fixed die is arranged at the top of the lower die base, and an upper die base is arranged at the bottom of the hydraulic cylinder. By arranging the dismounting and mounting structures between the two sides of the interior of the upper die base and the two sides of the top end of the movable die, during use, mounting insertion blocks are inserted into positioning insertion grooves correspondingly, so that insertion studs can be positioned and mounted on the two sides of the top of the movable die, and then the top ends of the insertion studs penetrate through mounting penetrating holes correspondingly; according to the mold, the inserting stud is arranged on the upper mold base, the fastening threaded sleeve is connected to the outer portion of the inserting stud in a sleeving mode and screwed down, and therefore the purpose that the movable mold is stably installed at the bottom of the upper mold base can be achieved, the movable mold can be disassembled by unscrewing and taking down the fastening threaded sleeve, and the effect that the mold can be conveniently and rapidly installed, fixed, disassembled and replaced is achieved.
Owner:CHANGZHOU PENGDING PRECISION MOULD CO LTD

Electrocardiogram waveform display and analysis system and method

The invention provides an electrocardiogram waveform display and analysis system and method, and the system comprises a signal collection module which collects electrocardiogram signal data and caches the electrocardiogram signal data; the data extraction module extracts electrocardiogram signal data in the cache in sequence; the filtering module filters the electrocardiogram signal data based on the filter bank to obtain target electrocardiogram signal data after clutter and noise are removed; the signal suppression module is used for suppressing data clutters and noise of the target electrocardiogram signal data; the waveform screening and rejecting module determines an electrocardiogram basic waveform according to the target electrocardiogram signal data, and performs abnormal waveform screening and rejecting on the electrocardiogram basic waveform to obtain a standard electrocardiogram waveform; the heart rate calculation module performs heart rate calculation according to the standard electrocardiogram waveform to obtain heart rate information; and the display module displays the heart rate information and the corresponding standard electrocardiogram waveform on a screen. The display waveform can be conveniently obtained through a real-time stable method, and the heart rate is accurately calculated.
Owner:ESONIC MEDICAL TECHNOLOGY (BEIJING) CO LTD

Pumped storage power station site selection evaluation and system based on correction factor analytic hierarchy process

The invention discloses a pumped storage power station site selection evaluation method and system based on a correction factor analytic hierarchy process. The method comprises a pumped storage power station site selection evaluation index system constructed according to influence factors of site selection of a pumped storage power station; establishing an expert scoring table for site selection of the pumped storage power station according to the characteristics of the pumped storage power station; correcting the expert scoring scale value of the evaluation index by adopting a correction factor; calculating the weight of each index in the index system by adopting an analytic hierarchy process; and establishing a comprehensive evaluation model by adopting a fuzzy comprehensive evaluation method, and evaluating the pre-selected site of the pumped storage power station. According to the method, the influence of expert subjectivity on the evaluation index weight is reduced, and the evaluation result is closer to the actual situation.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP CO LTD

Method and system for 5G base station to automatically acquire adjacent cell gNB ID length

The invention relates to a method for a 5G base station to automatically obtain the gNB ID length of an adjacent region, belongs to the technical field of communication, and solves the problem of switching failure caused by the fact that the gNB ID length of the adjacent region cannot be obtained in the prior art. The method comprises the following specific steps: a 5G base station respectively sets initial gNB ID lengths of adjacent cells by using an ANR enhancement strategy module; obtaining the ID of a target base station to be switched in combination with the initial gNB ID length, and initiating a switching preparation request to a core network; the core network responds to the switching preparation request, and replies a corresponding failure message when a target base station cannot be matched due to a gNB ID length error; when a matched target base station is found, the gNB ID length is the correct adjacent region gNB ID length; and the 5G base station adjusts the initial gNB ID length by using the ANR enhancement policy module in combination with the failure message, and performs policy switching neighbor cell attempt to obtain a correct neighbor cell gNB ID length, thereby realizing full automation of neighbor cell information acquisition.
Owner:CHINA SOUTH IND GRP SHANGHAI ELECTRIC CONTROL RES INST

Aluminum processing deep well casting production line AI video violation snapshot monitoring method

The invention provides an aluminum processing deep well casting production line AI video violation snapshot monitoring method, which is characterized in that an intelligent safety production early warning model is constructed based on a computer vision deep learning technology, embedded equipment is used as a data acquisition terminal, and the action of the data acquisition terminal is associated with the operation of a console of an aluminum processing deep well casting production line. When the console starts to execute a dangerous process, the data acquisition terminal is triggered, the data acquisition terminal carries out continuous data acquisition on a monitoring picture of the front-end monitoring equipment and sends the acquired data to the AI monitoring video server at the rear end, and an AI system of the AI monitoring video server carries out data analysis through an intelligent safety production early warning model. AI identification is carried out by an AI analysis module, and alarm response is carried out according to an analysis result; according to the invention, the operation behavior of the casting production field operation personnel can be monitored in real time, the unsafe behavior of the personnel is judged through AI visual analysis, an early warning is given to remind the personnel to correct the unsafe behavior, and the occurrence of safety accidents is avoided.
Owner:CHINALCO RUIMIN CO LTD +1

Regional coverage evaluation method for reconnaissance capability of unmanned aerial vehicle cluster system

ActiveCN119226744AReduce the possibility of missingcalculation speedMarkov chainRemote sensing
The invention belongs to the technical field of unmanned aerial vehicle cluster reconnaissance capability evaluation, and provides an unmanned aerial vehicle cluster system reconnaissance capability area coverage evaluation method, which comprises the following steps: constructing a single machine coverage probability model based on an unmanned aerial vehicle reconnaissance range and a target appearance position; calculating a single-machine coverage probability based on a single-machine coverage probability model; based on the Markov chain, evaluating the # imgabs0 # re-coverage probability of the unmanned aerial vehicle cluster system; based on the characteristics of the unmanned aerial vehicle reconnaissance assembly, constructing a single-machine reconnaissance assembly execution degree change rule And evaluating the area coverage of the unmanned aerial vehicle cluster system reconnaissance capability based on the execution degree change rule of the single-machine reconnaissance component. According to the method, for the given target area range and the unmanned aerial vehicle reconnaissance range, the minimum number of the unmanned aerial vehicles needing to be input is obtained, it is ensured that the cluster has the good area coverage capacity, the executability level of the reconnaissance capacity of the whole unmanned aerial vehicle cluster system can be dynamically evaluated in real time, the feasibility is higher, and the applicability is wider.
Owner:CHINA AERO POLYTECH ESTAB

Vehicle electric quantity balance analysis and calculation method, device and equipment and vehicle

The invention discloses a whole vehicle electric quantity balance analysis and calculation method, device and equipment and a vehicle, and belongs to the technical field of automobile electric appliances. According to the technical scheme, the whole vehicle electric quantity balance analysis and calculation method comprises the following steps that static electric quantity balance calculation is conducted on a whole vehicle, and the capacity of a storage battery is estimated; determining the type of a storage battery and the type of a generator by performing dynamic electric quantity balance calculation on the whole vehicle; comprising the steps that starting current of a storage battery is determined based on parameters of a starting motor according to a starting characteristic curve of a starter, and the type of the storage battery is determined by combining pre-estimated storage battery capacity; according to the use condition, season and use environment of the vehicle, the use frequency coefficient of electric equipment is introduced to calculate the electric load of the whole vehicle, the rated current of the selected generator is estimated, and the type of the generator matched with the storage battery is determined. Various factors such as the use condition, the season and the use environment of the vehicle are considered, and the use frequency coefficient of the electric equipment is introduced, so that the adaptability and the practicability of an analysis result are improved.
Owner:SINO TRUK JINAN POWER CO LTD

Method for judging key area of inflow of water outside drainage pipe network, evaluating rationality of sewage plant and estimating effect of pipe network repair project

The invention discloses a drainage pipe network external water inflow key area discrimination, sewage plant rationality evaluation and pipe network repair engineering effect estimation method, and belongs to the technical field of water supply and drainage and municipal engineering. The distinguishing method comprises the following steps: step 1, dividing the drainage pipe network into a plurality of areas; 2, listing an equation set for the districts; 3, measuring and calculating background flow Qb and background concentration Cb; 4, measuring and calculating the total external water concentration Cw; 5, measuring and calculating the total effluent concentration Ct; sixthly, the total transfer water flow Qz and the total transfer water concentration Cz are measured and calculated; step 7, solving the value of Qw / Qt; and 8, completing the judgment of the drainage pipe network external water inflow key area. According to the invention, areas with serious inflow of external water can be checked in a targeted manner, the checking cost is reduced, and the checking efficiency is improved.
Owner:CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD +1