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Government services cloud access control method based on attribute encryption
The invention discloses a government services cloud access control method based on attribute encryption. A central authority determines all attributes of a system, permits or revokes attribute authority management authority, and authenticates administrative staff; an attribute authority receives the login of administrative staff in the jurisdiction thereof and is simultaneously responsible for attribute revocation of the administrative staff; a cloud server stores data and carries out semi-decryption on an encrypted file when a user sends out a data request; a data uploader makes an access control strategy according to the security level of the file, and encrypts and uploads the file after name signing; and an access user sends out a data access request and finally decrypts the encrypted file. By adopting the attribute encryption scheme, the loads caused by user attribute revocation and encrypted file updating are reduced, the trap door information capturing of the user is controlled, and attribute revocation is carried out on the user under the condition that the encrypted file is not changed; in addition, by utilizing the name signing and attribute encryption scheme based on the identity, the safety authority of the user and fine-grained access control are realized.
Owner:XIDIAN UNIV
Fast and complete automatic driving trajectory planning method
ActiveCN109540159AShort timeBehavioralInstruments for road network navigationTime domainCollision detection
The invention relates to a fast and complete automatic driving trajectory planning method. The method comprises the steps that 1) a basic path is planned; 2) collision detection is carried out on thebasic driving path, and step 3) is carried out; if collision does not exist, whether the basic driving path reaches a target point is determined; if so, step 4) is carried out; if not, step 3) is carried out; 3) after a sampling / search path planning method is used to acquire a smooth effective path, step 4) is carried out; 4) after a curvature extreme value corresponding to the path is acquired, segmentation velocity is planned to acquire a trajectory; and 5) collision detection is carried out on the trajectory in time domain and spatial domain; if collision exists, whether the distance between a vehicle and an obstacle is greater than 2 times the minimum braking distance; if so, velocity re-planning and returning to step 4) are carried out; if not, returning to step 1) is carried out; finally the path and velocity are combined to generate a trajectory and output the trajectory. Compared with the prior art, the method provided by the invention has the advantages of trajectory planninginstantaneity improvement, stability, reliability and the like.
Owner:TONGJI UNIV
Intelligent air purifier
ActiveCN105823137AAchieve sharingAchieve integrationMechanical apparatusSpace heating and ventilation safety systemsThe InternetOxygen ions
The invention discloses an intelligent air purifier. An air runner is arranged in the intelligent air purifier. A plurality of filtering layers are arranged at the inner edge of the air runner. An air draft fan, a purifier body and an intelligent control module are arranged in the air runner. The output end of an air quality sensor is connected with the input end of the intelligent control module. The purifier body comprises a filter, a humidifier, an ozone generator, an oxygen generator and a negative oxygen ion generator. The intelligent control module comprises a central control unit, an intelligent positioning module, a base station data sharing module, a cloud data module, a wireless communication module, a mobile phone APP module, a speech recognition module and a purification alarm module. By means of the intelligent air purifier, air purification is intelligent, the profitless power loss of a traditional purifier is reduced, and energy consumption is reduced; connection between the wireless communication module and the Internet of Things is achieved, so that sharing of the air quality data is achieved, and users can master and monitor the living environment any time any where, and the air purification quality is improved.
Owner:SHANGHAI NICHOLS ELECTRONICS TECH INC
System and method for sharing schedule plans
InactiveCN103020810AHighly executableEasy to analyzeOffice automationTransmissionUser needsProgram planning
The invention discloses a system for sharing schedule plans. The system comprises a formulating module, an uploading module and a sharing module, wherein the formulating module is used for formulating the schedule plans; the uploading module is used for selecting users needing to share the schedule plans and unloading the schedule plans to the sharing module; and the sharing module is used for receiving the schedule plans and sharing the schedule plans to the selected users needing to share the schedule plans. The invention further discloses a method for sharing schedule plans. The method comprises the following steps of: formulating the schedule plans in the formulating module; selecting users needing to share the schedule plans in the uploading module and unloading the schedule plans to the sharing module by the uploading module; and receiving the schedule plans and sharing the schedule plans to the selected users needing to share the schedule plans by the sharing module. Via the system and the method for sharing the schedule plans provided by the invention, the existing schedule plans are shared to a local area network or the Internet, so that the schedule plans of the users are reasonable and strong in executability.
Owner:UNITED ELECTRONICS
Just-in-time-based parallel forward calculation programing method for steel-making production planned time
The invention discloses a just-in-time-based parallel forward calculation programing method for steel-making production planned time. The method comprises the following steps of: on the basis that a steel-making production process flow network bottom layer object model takes a working position, a working procedure and a transport line as basic elements and the normal distribution rules of the operation time and transportation time of various steel grades are considered, regarding the pouring start time of each heat of sequential casting constraint calculation as a delivery date; taking the operation start time of each heat in the aspect of working procedure based on working procedure backward calculation as the planned reference target time; after the start and end operation time of each heat are calculated by time parallel forward calculation, distributing an appropriate processing working position for each heat by a working position selection rule; and adjusting and determining the start and end operation time on a corresponding working position of each heat by a heat operation time adjusting strategy in reference to the reference target time. An executable operation planning and dispatching scheme for realizing sequential casting production can be programmed rapidly and the method has high generality and wide applicability to the optimization of steel-making production operation planning and dispatching.
Owner:KUNMING UNIV OF SCI & TECH
Operating temperature control device for SCR (semiconductor control rectifier) denitration reactor of thermal power plant and control method of operating temperature control device
ActiveCN103836607AReduce the temperatureIncrease temperatureFeed-water heatersHigh pressureEconomizer
The invention relates to an operating temperature control device for an SCR (semiconductor control rectifier) denitration reactor of a thermal power plant and a control method of the operating temperature control device. At present, no convenient, flexible and effective control device and method for guaranteeing operating temperature of the SCR denitration reactor exists when exhaust gas temperature of the thermal power plant changes fiercely. The operating temperature control device comprises a coal economizer, a flue, the SCR denitraton reactor, a boiler, an evaporator, a water feed pump and a low-pressure steam pumping pipe, and is characterized by further comprising a high-pressure heater bypass, a high-pressure heater bypass stop valve, a coal economizer bypass, a coal economizer bypass stop valve, a coal economizer bypass electric adjusting valve, a high-pressure heater bypass control circuit, a coal economizer bypass control circuit, an SCR denitration reactor inlet smoke temperature measuring circuit and a controller. A temperature sensor is arranged at an inlet of the SCR denitration reactor, and the controller is connected to the temperature sensor through the SCR denitration reactor inlet smoke temperature measuring circuit. The operating temperature control device is simple in structural design, and convenient and flexible to use.
Owner:HUADIAN ELECTRIC POWER SCI INST CO LTD
Steel making factory multi-target scheduling plan compiling method considering molten iron supply condition
ActiveCN105631759AHighly executableBest Match GuaranteedData processing applicationsManufacturing computing systemsDecision makerResource utilization
The invention provides a steel making factory multi-target scheduling plan compiling method considering molten iron supply time and molten iron resource utilization. The method comprises the following steps that a multi-target function and constraint conditions considering the molten iron supply condition are established, multiple Pareto optimal solutions about a decision variable are acquired by utilizing a multi-target genetic algorithm based on Pareto for iterative operation, and one concrete iterative process is that a matching scheme between charge and molten iron bottles is adopted to indicate chromosomes, and feasible solutions of all the chromosomes in the current population are acquired by utilizing a decoding heuristic method; a non-dominated solution construction method is designed to calculate non-dominated solutions of the feasible solutions; non-dominated hierarchical ranking is performed on the chromosomes corresponding to all the solutions and crowding distance between the solutions is calculated, and a parent population is selected; and selection, intersection and mutation are performed on the chromosomes in the parent population so that progeny populations are obtained. The problem of scheduling plan compiling considering the molten iron supply condition can be solved, and multiple Pareto optimal solutions are acquired so that decision makers are enabled to select more appropriate solutions to be applied to actual production.
Owner:CHONGQING UNIV
Hydropower station deterministic optimal operation method based on reference line
ActiveCN104537577AIncrease power generationHighly executableData processing applicationsOptimal decisionDecision taking
The invention discloses a hydropower station deterministic optimal operation method based on a reference line and belongs to the technical field of hydropower. The hydropower station deterministic optimal operation method comprises the following steps that (1) a scheduling period is determined, and constraint conditions in the scheduling period are set; (2) a reservoir deterministic long-term optimal operation maximum generating capacity model is established; (3) based on the principle of reducing abandoned water energy and the loss of entering energy, an anti-abandoned-water line and a minimum decision boundary line are obtained; (4) the anti-abandoned-water line is correspondingly adjusted, and the optimal operation reference line is determined; (5) according to the optimal operation reference line, an optimal decision is obtained and used for guiding operation of a hydropower station. According to the hydropower station deterministic optimal operation method, experience of an expert and a reservoir operation rule are fused, and the method can be easily understood and grasped by operation personnel; a corresponding decision can be made at any moment according to the current water storage state of the hydropower station, and the hydropower station deterministic optimal operation method has a higher executable performance and a greater guiding significance.
Owner:HUAZHONG UNIV OF SCI & TECH
Active power distribution network fault management method based on random optimization
ActiveCN111641205AOptimal scheduling is goodImprove reliabilityGeneration forecast in ac networkLoad forecast in ac networkOptimal schedulingPower optimization
The invention discloses an active power distribution network fault management method based on random optimization, and the method comprises the steps: building an uncertainty model, initializing a system, obtaining initial data, and simulating scene data including a load demand, renewable energy output and fault duration through a Monte Carlo method; and then, establishing a power optimization andpower flow optimization two-stage model, and meanwhile, configuring a risk management scheme to ensure that the obtained scheduling strategy can keep good applicability when facing an extreme scene.In the solving process, decoupling calculation is carried out on power optimization and power flow optimization, alternate iteration is carried out, and the difference value of the network loss valuescalculated twice is used as a convergence criterion; and finally, a calculation result during final convergence is taken as a day-ahead optimal scheduling strategy. According to the method, the economic benefit of the active power distribution network during normal operation can be effectively improved, and meanwhile, the load reduction cost under the fault condition is remarkably reduced.
Owner:ZHEJIANG UNIV OF TECH
Banknote face direction identification method and device
InactiveCN106530483AImprove face recognition efficiencyHighly executablePaper-money testing devicesCharacter and pattern recognitionPattern recognitionGrayscale
Owner:SHENZHEN YIHUA COMP +2
GNSS observation value fixed weight method conforming to reality
PendingCN111060943ASimple and efficient operationHighly executableSatellite radio beaconingSatellite altitudeRandom model
The invention discloses a GNSS observation value fixed weight method conforming to reality. The method comprises the following steps of obtaining a GNSS observation value; determining a satellite elevation angle, a satellite azimuth angle and carrier-to-noise ratio information corresponding to each observation value; constructing a fixed weight function considering the satellite elevation angle, the satellite azimuth angle and a carrier-to-noise ratio; using the fixed weight function to construct a random model; and realizing GNSS navigation positioning. In the method, observation value quality changes caused by some actual environment factors ignored in a traditional observation value fixed weight method are considered, and due to a fact that observation station environment factors are always closely related to the satellite elevation angle, the satellite azimuth angle and the carrier-to-noise ratio, the factors are fully considered, and the corresponding observation value fixed weight method is established. Compared with a traditional weight fixing method, by using the method of the invention, GNSS navigation positioning precision and reliability can be improved.
Owner:HOHAI UNIV
Raw material scheduling method and device
ActiveCN106094751AImprove accuracyHighly executableTotal factory controlProgramme total factory controlMulti targetingRaw material
The invention provides a raw material scheduling method and device. The method comprises the steps that a raw material uncertain scheduling model is established; the raw material uncertain scheduling model is determined so that a determined constrained multi-target scheduling module is obtained; and the determined constrained multi-target scheduling module is solved so that raw material scheduling information is obtained, and raw material scheduling in the mixing process is performed according to the raw material scheduling information. The actual production process can be accurately described by establishing the raw material uncertain scheduling model, the raw material scheduling information of high accuracy can be obtained by a determined CMOSTA algorithm with variation, the raw material scheduling information has high performability, and raw material scheduling is performed according to the raw material scheduling information so that the production efficiency can be greatly enhanced and the product quality can be enhanced.
Owner:CENT SOUTH UNIV
Air purifying method of air purifier
PendingCN108826528AAchieve integrationAchieve transferMechanical apparatusSpace heating and ventilation safety systemsOxygen ionsEngineering
Owner:漳州龙文区汇洋远软件开发有限公司
Method for predicting reservoir reform volume after vertical well volume fracturing of low-permeability oil/gas reservoir
The invention provides a method for predicting a reservoir reform volume after vertical well volume fracturing of a low-permeability oil / gas reservoir. The method sequentially includes the following steps: (1) calculating an induced stress produced by a hydraulic fracture in a three-dimensional space; (2) calculating a stratum pore pressure obtained after leak-off of fracturing fluid; (3) calculating a stratum pore elastic stress obtained after the leak-off of the fracturing fluid; (4) overlapping the stress fields obtained in the step (1), (2) and (3) with an original crustal stress field to obtain a new crustal stress field, and calculating the magnitude and direction of the overlapped three-direction effective principal stress in the reservoir space; (5) calculating an open fracturing determination coefficient M of a natural fracture in the reservoir space and a shear fracturing area determination coefficient S of the natural fracture.
Owner:SOUTHWEST PETROLEUM UNIV
Method for realizing insulation coordination of basic functional units of voltage source converter (VSC) based on half bridge circuit
ActiveCN102130609AMeet insulation requirementsGood securityAc-dc conversionEngineeringElectromagnetic field
The invention relates to a method for realizing the insulation coordination of basic functional units of a voltage source converter (VSC) based on a half bridge circuit, which comprises the following steps of: 1) determining the insulation strength and properties of each component according to the steady-state over-voltage level, transient-state over-voltage level and transient over-voltage level of a sub-module under various operation conditions; 2) making equal the ground potential of a metal shell and a secondary control protection board of primary equipment and the potential of the cathode of the sub-module according to the potential distribution characteristics of the sub-module, and connecting the secondary control protection board and a primary circuit by using an isolation transformer to isolate the influence of the high voltage of the primary circuit on a secondary circuit; 3) shielding the electromagnetic interference of an insulated gate bipolar translator (IGBT) high speed switch in the secondary control protection board by using a metal shielding box according to the electromagnetic field distribution of the sub-module; 4) making equipotential an operating mechanism of a bypass switch and the cathode of the sub-module; and 5) selecting a high voltage wire as a wire crossing a high potential and a low potential to reduce the local discharge capacity of the sub-module. By the insulation coordination method, the insulation requirements of a system can be met, and high security and high economy are achieved.
Owner:CHINA ELECTRIC POWER RES INST +1
Karst surface collapse analysis method
PendingCN110705095AAccurately determineStrong targetingGeometric CADDesign optimisation/simulationHydrometryKarst
The invention relates to the technical field of geological disaster prevention and control, and discloses a karst surface collapse analysis method, which comprises the following steps of obtaining a geological structure, a hydrological structure and a construction collapse condition of a target area; dividing the collapse process of the target area into an engineering construction penetration stage and a sudden collapse stage; in the engineering construction penetration stage, judging the penetration mode of the karst cave or the soil cave in the construction process according to the construction collapse condition; and in the sudden-change collapse stage, obtaining the change condition of the geological structure and the change condition of the hydrological structure, and judging the collapse type of the karst cave or the soil cave so as to determine the surface collapse forming mechanism of the target area. According to the method, the penetration effect analysis of engineering construction is introduced, and the surface collapse formation mechanism of the target area is obtained by combining the change conditions of the geological structure and the hydrological structure, so that the karst surface collapse formation mechanism caused by the penetration effect of engineering construction can be accurately determined, and effective basis and guidance are provided for urban related disaster prevention and reduction work.
Owner:GUANGZHOU URBAN PLANNING & DESIGN SURVEY RES INST +1
Interactive system and method for controlling vehicle application through same
InactiveCN106020625AQuick callHighly executableDashboard fitting arrangementsInput/output processes for data processingEdge regionTouchscreen
The invention provides an interactive system and a method for controlling a vehicle application through the same. The interactive system comprises a touch screen, wherein the touch screen is provided with an input region. The method comprises the steps of displaying first expression of a first application in an edge region of the touch screen; displaying second expression of a second application in a main region of the touch screen; and when a first touch gesture is detected, displaying the first expression of the first application in the main region to replace the second expression of the second application, wherein the first touch gesture comprises a finger motion facing to the edge region along one or more lines, and the first touch gesture is unrelated to start and stop positions of the finger motion.
Owner:QOROS
Method for quickly making hot beverage by food processor
InactiveCN109770744APrevent splashPrevent overflowBoiling over preventionWarming devicesPulp and paper industrySlurry
The invention provides a method for quickly making a hot beverage by a food processor. The food processor comprises a machine base, a stirring cup arranged on the machine base and a stirring knife arranged in the stirring cup, wherein a motor and a control unit are arranged in the machine base. The food processor further comprises a heating device. The method comprises the steps: at the first heating stage, heating pulp in the stirring cup by full-power operation of the heating device; at the crushing stage, driving the stirring knife to rotate by the motor and stirring and crushing the pulp in the stirring cup; at the boiling stage, controlling the heating device to operate in a non-full power way by the control unit and boiling the crushed pulp in the stirring cup. The method further comprises the steps: at the stirring and cooling stage, controlling the motor to drive the stirring knife by the control unit to rotate at a rotating speed V1, and stirring and cooling the pulp, wherein2000 rpm <=V1 <= 7800 rpm, the stirring and cooling stage is set after the first heating stage and before the crushing stage, so that the heated pulp is rapidly cooled, and the pulp is prevented fromoverflowing in the high-speed crushing process.
Owner:JOYOUNG CO LTD
Methods and devices for obtaining frontal human face images
InactiveCN105404854AEliminate the effects ofSimple methodCharacter and pattern recognitionComputer visionFace perception
Embodiments of the invention disclose methods and devices for obtaining frontal human face images. According to a to-be-processed human face image and a pre-training acquired image of a human face characteristic part, the image of the human face characteristic part in the to-be-processed human face image is obtained; according to the image of the human face characteristic part, a deviation angle of a human face in the to-be-processed human face image is obtained; according to the deviation angle, the to-be-processed human face image is processed so that a frontal human face image is output; and, through a method for detecting whether the characteristic part can be detected in the human face image at the same time, whether a human face pose is a frontal human face pose is judged. The method is simple and effective, and performability is high; the frontal human face pose eliminates influences of changes of the human face pose and the like on a human face identification algorithm, a frontal human face is directly detected, human face pose correction, human face alignment and other processes are not needed, and human face identification efficiency is improved.
Owner:SHENZHEN YIHUA COMP +2
CoO/rGO composite and preparation method and use thereof
ActiveCN108539160AAid in diffusionFacilitate penetrationCell electrodesLithium–air batteryNanoparticle
The invention discloses a CoO / rGO composite and a preparation method and application thereof, the CoO / rGO composite is formed by randomly distributing CoO nanorods in the shape of sugar coated haws ona stick on the surface of graphene, the CoO nanorods are composed of CoO nanoparticles, and a gap is arranged between adjacent CoO nanoparticles. The CoO / rGO composite is a double-effect catalyst fora lithium air battery. The CoO / rGO composite has good catalytic activity for both ORR and OER, and has very high battery capacity. The CoO / rGO composite has simple process, environmental friendliness, low cost and high efficiency and other characteristics.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY
Mobile terminal and low-electrical-quantity notification method and device
InactiveCN102883060AAutomatically interrupt the communication stateEasy to useSubstation equipmentState of chargeComputer module
Owner:DONGGUAN YULONG COMM TECH +1
Internal bus for aerospace electronic product
ActiveCN105760327AVersatileImprove connection reliabilityElectric digital data processingSignal qualityComputer module
The invention provides an internal bus for an aerospace electronic product, which is used for performing information interaction between a master module and a plurality of slave modules. Bus signals comprise a test signal, a system signal, a digital I / O (Input / Output) signal, an auxiliary functional signal, a power supply signal and a time clock synchronization signal; a bus time sequence is classified into a main module operation period using waiting and a main module operation period not using waiting; each operation period is classified into a reading time sequence and a writing time sequence. The bus provided by the invention has high universality and compatibility specific to aerospace electronic products, and contributes to improvement of module interconnection signal quality and working reliability.
Owner:NO 32 RES INST OF CHINA ELECTRONICS TECH GRP
Cover beam construction auxiliary device and method
ActiveCN113463522AStrong pressure capacityGood energy saving and environmental protection effectBridge erection/assemblyHydro energy generationClassical mechanicsPier
The invention relates to a capping beam construction auxiliary device which at least comprises two triangular support units which are used for being arranged on the two sides of a pier column in the length direction of a to-be-poured capping beam and can be assembled to form an integrated triangular bracket capable of synchronously moving in the length direction of the pier column; a steel supporting frame which surrounds the pier column to form a non-contact space used for containing the pier column, and the two ends of the steel supporting frame are connected to a bottom end frame body of the triangular bracket and a bearing platform located below the pier column correspondingly, so that external force borne by the triangular bracket is transmitted to the bearing platform through the steel supporting frame; and the triangular bracket is hoisted to the steel supporting frame in the mode that a gap is reserved between the triangular bracket and the pier column. The advanced modular solution thought of modern standardization is applied to the technical field of capping beam construction, and the capping beam construction process which is numerous and complicated in original construction system and tedious in on-site assembly steps is simplified to obtain the modular capping beam construction auxiliary system which is high in executability and high in stability.
Owner:北京住总集团有限责任公司
Method for calculating containment leakage rate under special working conditions
ActiveCN112231893AMonitor IntegrityAchieve timelinessNuclear energy generationNuclear monitoringProcess engineeringCalculation methods
The invention belongs to the technical field of nuclear leakage rate calculation, and particularly relates to a method for calculating a containment leakage rate under special working conditions, themethod comprises seven steps. The method is characterized by comprising the following steps: step 1, drawing a limit value curve of the leakage rate deltaP-Qleak of a new containment; step 2, queryingQp historical data of a unit needing to be monitored, and selecting a relatively large value; 3, comparing the calculated value with a limit value; step 4, performing result judgment; step 5, performing pressure change analysis; step 6, performing temperature change analysis; and step 7, ending the reverse calculation. The method has strong executability, can accurately calculate the leakage rateof the containment under special working conditions, and can realize timely and effective monitoring of the integrity of the containment every day, i.e., the effective monitoring of the integrity ofthe containment is shortened from 5 days to 1 day, and the timeliness is realized.
Owner:CNNC FUJIAN FUQING NUCLEAR POWER
A Fast and Complete Trajectory Planning Method for Autonomous Driving
ActiveCN109540159BShort timeBehavioralInstruments for road network navigationTime domainCollision detection
The invention relates to a fast and complete automatic driving trajectory planning method. The method comprises the steps that 1) a basic path is planned; 2) collision detection is carried out on thebasic driving path, and step 3) is carried out; if collision does not exist, whether the basic driving path reaches a target point is determined; if so, step 4) is carried out; if not, step 3) is carried out; 3) after a sampling / search path planning method is used to acquire a smooth effective path, step 4) is carried out; 4) after a curvature extreme value corresponding to the path is acquired, segmentation velocity is planned to acquire a trajectory; and 5) collision detection is carried out on the trajectory in time domain and spatial domain; if collision exists, whether the distance between a vehicle and an obstacle is greater than 2 times the minimum braking distance; if so, velocity re-planning and returning to step 4) are carried out; if not, returning to step 1) is carried out; finally the path and velocity are combined to generate a trajectory and output the trajectory. Compared with the prior art, the method provided by the invention has the advantages of trajectory planninginstantaneity improvement, stability, reliability and the like.
Owner:TONGJI UNIV
Mobile terminal control method based on radio frequency technology
ActiveCN102448084AGuarantee unified controlStrong execution abilitySpecial data processing applicationsWireless communicationRadio frequency signalControl circuit
The invention discloses a mobile terminal control method based on radio frequency technology. The method comprises the following steps of: step A: presetting a radio frequency server on a set control area, wherein the radio frequency server at least comprises a control management module and a radio frequency reading and writing module; step B: presetting a radio frequency control circuit for a control mobile terminal, wherein the radio frequency control circuit at least comprises a radio frequency module and a safety control module, and the radio frequency module, the safety control module and a master control module of the mobile terminal are electrically connected in sequence; and step C: controlling the mobile terminal by the radio frequency server according to the condition whether the radio frequency reading and writing module detects a radio-frequency signal sent by the radio frequency module of the mobile terminal is or not. The mobile terminal control method based on the radio frequency technology, disclosed by the invention, is mainly used for controlling the mobile terminal under specific occasions.
Owner:XIAMEN ELITE ELECTRIC
Pillarless sublevel caving mining plan optimization method based on target planning
ActiveCN106384173AAvoid problems that are difficult to connect reasonablyHighly executableUnderground miningForecastingSpelunkingMathematical model
The invention discloses a pillarless sublevel caving mining plan optimization method based on target planning, and a problem that the working procedures of a mining plan are difficult to be reasonably connected in an implementation process can be effectively avoided. The method comprises a step of carrying out working procedure dividing of underground mining and counting the remaining workload of each working procedure in each section at the end of a year and the ore grade of a stope, a step of defining the mutual connection relation between the working procedures in the time, a step of obtaining the restriction relationship between adjacent stope backstopping according to the position relation of stopes in the space, and defining the equipment scheduling relationship of the same type of working procedures, a step of carrying out segmentation of a system project according to the production capacity of tunneling equipment and carrying out numbering, defining the logic relation of each segment of system project in a propulsion direction, associating the segmented system project and the stopes, and finding the system workload which is needed to be completed of any stope before backstopping, a step of establishing a pillarless sublevel caving mining plan optimization mathematical model based on target planning, and a step of solving the mathematical model and obtaining a mining plan optimization plan.
Owner:CHANGSHA DIGITAL MINE
The invention relates to a classification management method for reactor internal components of a pressurized water reactor nuclear power plant
InactiveCN109523232ARealize managementOvercoming a lack of theoretical basisOffice automationResourcesPressurized water reactorNuclear engineering
The invention provides a classification management method of reactor internal components of a pressurized water reactor nuclear power plant, comprising the following steps: 1) determining an aging mechanism of reactor internal components; 2) determining screening criteria of components; 3) classifying that components in the reactor into A-type component and non-A-type components; 4) carrying out FMECA analysis on non-A-type components, further classify into A, B and C-type components; 5) carrying out functional evaluation on that C-type components, and confirm whether the C-type components aremaintained in the C-type component or are adjusted to the B-type components; 6) dividing that class B and the clas C parts into main inspection parts, enlarging the inspection part, existing outlineparts, and classifying the clas A parts as inspection parts without additional measures; 7) for that main inspection component, the enlarged inspection component and the existing outline component, the classification management method of the invention overcomes the problems of lacking theoretical basis in the management of the conventional reactor inner component components and lacking quantitative analysis in the analysis and evaluation process, and has the advantages of strong executability, high applicability and definite supplementary inspection requirements.
Owner:SUZHOU NUCLEAR POWER RES INST +4
Single-tower desulfurization ultra-clean treatment system and desulfurization process
PendingCN112675682AReduce desulfurization pressureImprove desulfurization effectCombination devicesUsing liquid separation agentDust controlSlurry
The invention relates to the technical field of flue gas desulfurization, and discloses a single-tower desulfurization ultra-clean treatment system and a desulfurization process, the single-tower desulfurization ultra-clean treatment system comprises a pre-absorption device and a desulfurization tower, and the pre-absorption device adopts spraying to pre-absorb flue gas; an absorption tower, a turbulent flow synergistic plate, a spraying layer, a slurry circulating pump, a synergistic dust removal device and a demister are sequentially arranged in the desulfurization tower from bottom to top; and the pre-absorbed flue gas enters the desulfurization tower through an absorption tower to finally finish desulfurization ultra-clean treatment. According to the invention, 20-30% of SO2 is captured after the flue gas is pre-absorbed and washed, and the reduction of the temperature and the concentration is more beneficial to the absorption of the subsequent absorption tower; and in addition, due to the design of the turbulent flow synergistic plate and the synergistic dust removal device, the desulfurization efficiency and desulfurization capacity are further improved. The system can meet the emission requirements that the SO2 concentration value at the outlet of the absorption tower is lower than 35mg / Nm < 3 > and the particulate matter concentration value is lower than 5mg / Nm < 3 > under the condition that the SO2 concentration at the inlet of the single-tower absorption tower is less than or equal to 6200mg / Nm < 3 >.
Owner:武汉立为工程技术有限公司
Direct-current bus voltage control method suitable for low-wind-speed distributed wind power generation
PendingCN110460103ASimple control strategyImprove controlBatteries circuit arrangementsSingle network parallel feeding arrangementsCapacitanceLoop control
The invention discloses a direct-current bus voltage control method suitable for low-wind-speed distributed wind power generation. The low-wind-speed distributed wind power generation system adopted by the control method comprises a wind turbine, a generator, a machine-side converter, a voltage-stabilizing capacitor C, a grid-side converter and a direct-current bus. The low-wind-speed distributedwind power generation system can be directly connected to an alternating-current power distribution network. The low-wind-speed distributed wind power generation system further comprises a super capacitor. The super capacitor is connected in parallel with a bidirectional DC / DC converter and then is connected to a DC bus on the rear side of a machine-side converter. The DC / DC converter controls charging and discharging of the super capacitor in any control period T to maintain power stability of the DC bus injected into the wind power generation system. According to the method, the power stability of the direct current bus can be maintained, so that the delay between the actual value and the reference value of the d-axis current output by the PI regulator in the voltage outer loop control of the grid-side converter is reduced. The voltage stability of the direct-current bus is realized.
Owner:NANJING INST OF TECH
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