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Diagnosis method for fault position and performance degradation degree of rolling bearing
InactiveCN102854015AOptimization determination methodReduce consumptionMachine bearings testingSingular value decompositionSupport vector machine
The invention discloses a diagnosis method for the fault position and the performance degradation degree of a rolling bearing, belonging to the technical field of fault diagnosis for bearings, and solving the problems of low accuracy of diagnosis for fault position and performance degradation degree, and high time consumption of training existing in an intelligent diagnosis method for a rolling bearing in the prior art. A white noise criterion is added in the disclosed integrated empirical mode decomposition method, so that artificial determination for decomposition parameters can be avoided, and the decomposition efficiency can be increased; and via the disclosed nuclear parameter optimization method based on a hypersphere centre distance, the small and effective search region of nuclear parameters in a multi-classification condition can be determined, so that training time is reduced, and the final state hypersphere model of a classifier is given. The intelligent diagnosis method based on parameter-optimized integrated empirical mode decomposition and singular value decomposition, and combined with a nuclear parameter-optimized hypersphere multi-class support vector machine based on the hypersphere centre distance is higher in identification rate compared with the existing diagnosis method. The diagnosis method disclosed by the invention is mainly applied to intelligent diagnosis on the fault position and the performance degradation degree of the rolling bearing.
Owner:HARBIN UNIV OF SCI & TECH
Test device and test method for testing kinetic shear characteristics between pipe piles and grouting soil bodies
ActiveCN104374648AThe test results are accurateAvoid border effectsMaterial strength using steady shearing forcesScale effectsEngineering
The invention discloses a test device and a test method for testing kinetic shear characteristics between pipe piles and grouting soil bodies. The test device comprises a vibration platform, a pipe pile model test box, a loading mechanism and a monitoring system, wherein the pipe pile model test box comprises a steel bottom plate, stacked steel frames, a limiting mechanism, pipe piles arranged in the steel frames, and a sandy oil body; guide chutes are formed between the steel frames; balls are arranged on the guide chutes; hard soil is spread on the steel bottom plate; the part between the pipe piles and the sandy oil body is filled with cement paste; sealing films are arranged on the inner walls of the steel frames; and the monitoring system comprises a displacement sensor, a strain rosette group arranged on the outer surfaces of the pipe piles, and a pressure box arranged in the sandy oil body. According to the device and the method disclosed by the invention, the box wall boundary influence can be well eliminated, the problem that a scale effect and a test model similarity ratio relationship are difficult to determine is solved, the test results are accurate, reasonable and reliable, and reliable basic data is provided for theoretical analysis and engineering practice.
Owner:GUANGZHOU INSTITUTE OF BUILDING SCIENCE CO LTD +1
GIS partial discharge type identification method based on GK fuzzy clustering
InactiveCN104155585AHigh precisionAvoid sureTesting dielectric strengthCharacter and pattern recognitionCluster algorithmAlgorithm
The present invention discloses a GIS partial discharge type identification method based on GK fuzzy clustering. The method is characterized by comprising the steps of S01, constructing a GIS partial discharge gray scale image according to the acquired data; S02, extracting the fractal features of the GIS partial discharge gray scale image, namely a box dimension and an information dimension; S03, processing the fractal feature data further by a GK fuzzy clustering algorithm, isolating a GIS site interference signal; S04, designing a GIS partial discharge mode recognizer based on a least squares support vector machine classification algorithm; S05, identifying the GIS partial discharge type. By a GK fuzzy clustering method, the GIS site interference signal is isolated, thereby improving the accuracy of extracting the fractal features of the partial discharge signal. Meanwhile, by identifying the GIS partial discharge type by the least squares support vector machine classification algorithm, the correctness and rapidity of the discharge type identification are improved.
Owner:STATE GRID CORP OF CHINA +3
Method and device for determining data flow speed of service access port
ActiveCN103702360AImprove accuracyAvoid sureNetwork traffic/resource managementData switching networksTraffic capacityComputer network
The embodiment of the invention provides a method and a device for determining the data flow speed of a service access port. According to the method and the device, the determination cost of the data flow speed of a service access port required to be newly added is reduced, and higher accuracy is realized. The method comprises the following steps: acquiring the data flow information of all existing service access ports; classifying all the service access ports according to the data flow information of each service access port, and determining data flow models of all classes of service access ports; when the service access port required to be newly added in a network is determined, determining the corresponding data flow model of the service access port required to be newly added; determining the data flow speed of the service access port required to be newly added according to the corresponding data flow model of the service access port required to be newly added.
Owner:HUAWEI TECH CO LTD
Voice service switching method and apparatus, storage medium, and electronic device
InactiveCN108366402AAvoid switchingAvoid surePower managementTransmissionSpeech soundReal-time computing
The embodiment of the invention discloses a voice service switching method and apparatus, a storage medium, and an electronic device. The method comprises the following steps: in a VoLTE communicationprocess, periodically obtaining the signal strength of an available Wifi hotspot, relevantly storing an obtaining moment and the signal strength of the Wifi hotspot; judging whether the Wifi hotspotis a candidate hotspot according to the signal strength and the state information of the electronic device on a user side; if the Wifi hotspot is the candidate hotspot, executing a VoWifi switching operation when a condition of switching from a VoLTE mode to the VoWifi mode is satisfied. Due to comprehensive consideration of the state information of the electronic device and the change of the Wifihotspot signal with time, the Wifi hotspot with the signal strength gradually reduced in the mobile state can be avoided serving as the candidate hotspot, the Wifi hotspot selection scheme is optimized, the call quality is improved, and the probability of dropped calls is reduced.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Self-adaptive air filtering method based on iterative shrinkage weighted fusion
InactiveCN104459635AImprove estimation accuracyReduce Mismatch ProblemsWave based measurement systemsSmall sampleAir filter
The invention discloses a self-adaptive air filtering method based on iterative shrinkage weighted fusion. The method comprises the steps that an array antenna receives data to build a signal model, and a sampling covariance matrix of the received data is obtained; a self-adaptive iteration way is adopted to update a priori covariance matrix on line; weighting coefficients of the sampling covariance matrix and the priori covariance matrix are calculated according to the minimum mean-squared error criterion, and an estimated covariance matrix is obtained through the shrinkage weighted fusion processing method; finally, the self-adaptive weight vector is calculated to carry out air filtering. The self-adaptive air filtering method can estimate the covariance matrixes with high precision on the condition of small samples, can effectively relieve the priori knowledge and current data model mismatch problem, avoids subspace dimensionality determination, has the advantages of being high in output signal to interference plus noise power ratio and convergence rate, and is effective for self-adaptive air filtering actual application.
Owner:XIAN UNIV OF SCI & TECH
Method for extracting stomach CT (Computed Tomography) image suspected to be lymph node based on sparse dynamic integrated selection
ActiveCN103400385AImprove classification effectReduce complexityImage analysisComputerised tomographsImaging processingComputed tomography
The invention discloses a method for extracting a stomach CT (Computed Tomography) image suspected to be a lymph node based on sparse dynamic integrated selection and belongs to the field of medical image processing. According to the method, the problems that effective background information is difficult to determine and is high in complexity when a suspected lymph node area is extracted are mainly solved. The realization process of the method comprises the following steps of extracting an adipose tissue area from the stomach CT image by using an interactive segmentation method; over segmenting the extracted adipose tissue area by using mean shift; extracting the characteristics of a grey level histogram in the over-segmentation area to form a sample set to be classified; utilizing a training sample learning dictionary and a classifier integration system; generating an atom integration system for each atom; sparsely encoding a sample to be classified and outputting a final classifying result according to the atom integration system; combining the over-segmentation areas of the same type to obtain the stomach CT image suspected to be the lymph node area. According to the method disclosed by the invention, adipose tissues can be automatically extracted under the condition that no background is marked and the time complexity of extraction of the suspected lymph node area is effectively reduced.
Owner:XIDIAN UNIV
Improved model predicted control method of three-phase three-level eight-switch rectifier
InactiveCN110086363AImprove the withstand voltage levelEasy to controlAc-dc conversionWind energy generationThree levelVoltage vector
The invention discloses an improved model predicted control method. A voltage and a 90-degree delayed signal thereof are used in an alphabeta static coordinate system, and a rectifier leg voltage reference value is obtained via a mathematical model of the three-phase three-level eight-switch NPC rectifier, nine spatial voltage vectors of the three-phase three-level eight-switch NPC rectifier are reduced to seven voltage vectors by removing voltage vectors causing a high common-mode voltage; according to an objective function, an optimal spatial voltage vector enabling the optimal objective function is selected; and the obtained optimal spatial voltage vector serves as a switch function of a next control period, the state of a switch tube is controlled, the operation state of the circuit iscontrolled, and a control target of three-phase there-level eight switches in the wind power generation system under the AC input voltage unbalanced condition is achieved. The algorithm is simple, visual and clear, control is simple and accurate, and the practical value is high.
Owner:YANTAI UNIV
Rotor unmanned aerial vehicle real-time wind speed estimation method based on neural network
ActiveCN112269031AGood estimateAccurate estimateNavigational calculation instrumentsNavigation by speed/acceleration measurementsAir velocityWind run
The invention discloses a rotor unmanned aerial vehicle real-time wind speed estimation method based on a neural network. The method comprises carrying out a calibration experiment; calculating a total inertia force vector of each sampling moment under a body coordinate system; calculating the airspeed vector of the rotor unmanned aerial vehicle at each sampling moment under the body coordinate system; training and storing an artificial neural network by taking the airspeed vector of the rotor unmanned aerial vehicle at each sampling moment under the body coordinate system as output and takingthe input equivalent voltage of a rotor motor and the total inertia force vector at each sampling moment under the body coordinate system as input; calculating the total inertia force vector under the body coordinate system at the current moment, and taking the calculated total inertia force vector and the acquired input equivalent voltage of the rotor motor as input of the trained artificial neural network; and obtaining the estimated value of the airspeed vector of the rotor unmanned aerial vehicle under the body coordinate system at the current moment, and calculating the estimated value of the environment wind speed vector at the current moment. The method is suitable for the rotor unmanned aerial vehicle with any number of rotors, and the wind speed / wind direction can be simply, conveniently and accurately estimated.
Owner:TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
Method for device start controlling and electronic device
ActiveCN104052761AAvoid sureSolve the technical problem of intervening operations to control the startup sequence of electronic equipmentTransmissionElectricityNetwork packet
The invention discloses a method for device start controlling and an electronic device. The method is applied to an electronic device which includes a basic input and output system. A first operation system can be installed in the electronic device. The method includes the following steps: after the electronic device is powered on and an initialization process of the basic input and output system is completed, through a network start module, a first sequence data packet is obtained from a server connected with the electronic device; based on a first preset sequence in the first sequence data packet, a first installation program corresponding to a first operation system is searched for at M positions sequentially, wherein M is an integer larger than or equal to 1; and when the first installation program is obtained from an ith position in the M positions, the first installation program is executed so as to install the first operation system in the electronic device, wherein i is any integer smaller than or equal to M.
Owner:LENOVO (BEIJING) LTD
Authentication information processing method, terminal and network equipment
ActiveCN111836260AAvoid sureInhibitory responsePublic key for secure communicationUser identity/authority verificationWeb authenticationEngineering
The embodiment of the invention discloses an authentication information processing method, a terminal and network equipment. The method comprises the following steps that a terminal performs encryption and integrity protection on first indication information containing an error message type based on an encryption key and an integrity key respectively under the condition that network authenticationfails; the encryption key and the integrity key are obtained based on a shared key; different error message types correspond to the first indication information in the same format; the terminal sendsthe encrypted first indication information to a first network device, wherein the encrypted first indication information is sent to the first network device through a second network device.
Owner:CHINA MOBILE COMM LTD RES INST +1
Method for validating structural bonding of composite parts
The invention discloses a method for validating structural bonding of composite parts. The method comprises the following steps: performing positioning assembly on structural parts and encapsulating avacuum bag, and validating according to measured validation parameters of temperature, time and pressure; removing the vacuum bag after validation completion, taking out the assembly, measuring the bonding film, and determining the compensation thickness of the bonding film and the number of layers of the used bonding film according to the stress state and area of the bonding film; removing a release film on the surface of the bonding film, and directly compensating by adopting the bonding film. According to the method disclosed by the invention, the bonding film is directly pasted in the bonding area for validation, the bonding film is not removed after validation completion, and bonding film compensation is directly performed on the bonding film according to the stress state of the bonding film, so that the condition that the compensation area is determined by contrasting the validation film on the structural parts in the traditional validation method is avoided, the compensation area is accurate, and the validation operating difficulty is reduced. Moreover, the bonding film completes validation to be directly used for bonding, and the validation cost is effectively reduced.
Owner:CHENGDU AIRCRAFT INDUSTRY GROUP
Active light hand-held target and cooperation mark point identification method thereof
ActiveCN106595483AAvoid lossRigid constraints are goodImage enhancementImage analysisHand heldEngineering
The invention discloses an active light hand-held target and a cooperation mark point identification method thereof. The active light hand-held target comprises a target main body, a wireless switch controller, a handle, a light modifying plate, a diffuser plate, a light source aluminium substrate, and a measuring head. The wireless switch controller is disposed above the handle. The light modifying plate is disposed inside the light modifying plate groove of the target main body. The diffuser plate is fixedly adhered to the surface of the light modifying plate. The light source aluminium substrate is fixed on the back of the target main body. The handle is disposed on the back of the light source aluminium substrate. The measuring head is fixed at the tail of the target main body. The light modifying plate is equipped with a plurality of light-transmitting circular holes that are taken as cooperation mark points, an active light source is disposed on the light source aluminium substrate to correspond to each cooperation mark point, and the diffuser plate is provided with light equalizing films that correspond to the cooperation mark points. The active light hand-held target is convenient to use, is wide in viewing angle and usage scope, and is also high in detection precision.
Owner:JIANGSU JITRI HUST INTELLIGENT EQUIP TECH CO LTD
Shooting water meter character wheel coordinate acquisition method and device
ActiveCN107356201ARealize automatic calibrationAvoid sureVolume indication and recording devicesCharacter and pattern recognitionTransverse axisMechanical engineering
The invention discloses a shooting water meter character wheel coordinate acquisition method and device. The method comprises steps that in a shot image, a vertical coordinate value of a character wheel is determined; according to the vertical coordinate value of the character wheel, picture interception of the image is sequentially carried out at preset pixel length along a transverse axis, when a figure identified from the interception image is a complete display figure, a coordinate value of the picture is acquired and is taken as a coordinate value of the corresponding character wheel; the identified character wheel coordinate is taken as reference, a picture of each character wheel is intercepted according to the relative position of the character wheels, and the coordinate value of each character wheel is calculated. The method is advantaged in that the character wheel coordinates are acquired according to the shot pictures, automatic calibration of the character wheel coordinates is realized, and a problem that a worker is required to carry out field debugging to determine the character wheel coordinates is solved.
Owner:HANGZHOU SHANKE INTELLIGENT TECH CO LTD
Monocular vision-based hoisting steel wire rope spatial vibration measurement method
PendingCN112085787AImprove displacement measurement accuracyAvoid sureImage enhancementImage analysisVibration measurementNoise reduction
The invention discloses a monocular vision-based hoisting steel wire rope spatial vibration measurement method, which mainly comprises the following steps: respectively installing a camera and a background screen in front of and behind a vertical steel wire rope to acquire a steel wire rope vibration image sequence; performing noise reduction processing on the acquired image; determining the positions of two edge lines of the steel wire rope in each frame of image by utilizing an edge detection and positioning algorithm; adding a virtual reference line perpendicular to the steel wire rope at the measuring point; calculating coordinates of an intersection point between the reference line and the two edge lines, then calculating a proportionality coefficient between the actual width and thepixel width of the steel wire rope, and then calculating the vibration displacement of the steel wire rope in the first direction; determining a function relationship between the vertical distance between the camera and the steel wire rope and the pixel width of the steel wire rope by utilizing a fitting method, and further calculating to obtain the vibration displacement of the steel wire rope inthe direction vertical to the first direction. According to the invention, the monocular vision device is used for measuring the vibration displacement of the steel wire rope in two directions, so that the measurement cost is reduced.
Owner:CHINA UNIV OF MINING & TECH
Authentication information processing method, terminal and network equipment
ActiveCN111835691AAvoid sureInhibitory responseKey distribution for secure communicationWeb authenticationEngineering
The embodiment of the invention discloses an authentication information processing method, a terminal and network equipment. The method comprises the following steps that a terminal performs encryption and integrity protection on first indication information containing an error message type based on an encryption key and an integrity key respectively under the condition that network authenticationfails, wherein the encryption key and the integrity key are obtained based on a session root key, the session root key is generated under the condition that the first authentication between the terminal and the first network equipment succeeds, and different error message types correspond to the first indication information in the same format; and the terminal sends the encrypted first indicationinformation to the first network device, wherein the encrypted indication information is sent to the first network device through a second network device.
Owner:CHINA MOBILE COMM LTD RES INST +1
A diagnosis method for rolling bearing fault location and performance degradation degree
InactiveCN102854015BOptimization determination methodReduce consumptionMachine bearings testingSingular value decompositionSupport vector machine
The invention discloses a diagnosis method for the fault position and the performance degradation degree of a rolling bearing, belonging to the technical field of fault diagnosis for bearings, and solving the problems of low accuracy of diagnosis for fault position and performance degradation degree, and high time consumption of training existing in an intelligent diagnosis method for a rolling bearing in the prior art. A white noise criterion is added in the disclosed integrated empirical mode decomposition method, so that artificial determination for decomposition parameters can be avoided, and the decomposition efficiency can be increased; and via the disclosed nuclear parameter optimization method based on a hypersphere centre distance, the small and effective search region of nuclear parameters in a multi-classification condition can be determined, so that training time is reduced, and the final state hypersphere model of a classifier is given. The intelligent diagnosis method based on parameter-optimized integrated empirical mode decomposition and singular value decomposition, and combined with a nuclear parameter-optimized hypersphere multi-class support vector machine based on the hypersphere centre distance is higher in identification rate compared with the existing diagnosis method. The diagnosis method disclosed by the invention is mainly applied to intelligent diagnosis on the fault position and the performance degradation degree of the rolling bearing.
Owner:HARBIN UNIV OF SCI & TECH
System and method for harvesting activated irradiation targets from nuclear reactor and radionuclide generation system
ActiveCN107851472AEasy to handleReduced shieldingNuclear energy generationConversion in nuclear reactorNuclear reactor coreNuclear reactor
A method for harvesting activated irradiation targets (16) from an instrumentation tube system (12) of a nuclear reactor comprises the steps of: coupling the instrumentation tube system (12) to a discharge tube (38) having an apex (50), an exit port (40) and a lock element (44) between the apex (50) and the exit port (40); passing the activated irradiation targets (16) from the instrumentation tube system (12) into the discharge tube (38) and blocking movement of the activated irradiation targets (16) out of the discharge tube (38) by means of the lock element (44); separating a predefined quantity (16') of the activated irradiated targets (16) from another quantity (16") of the targets (16) in the discharge tube (38); coupling the exit port (40) to a storage container (42) and releasing the lock element (44) to pass the predefined quantity (16') of the activated irradiation targets (16) under action of gravity into the storage container (42), wherein the separating step comprises passing the predefined quantity (16') of the activated irradiation targets (16) over the apex (50) and retaining the other quantity (16") of the targets (16) in the discharge tube (38) by means of the apex (50). Systems for generating radionuclides and harvesting activated irradiation targets adapted to the above method are also provided.
Owner:FRAMATOME ANP
Professional term extraction method and device in intelligent interview, equipment and medium
The invention discloses a professional term extraction method and device in intelligent interview, computer equipment and a storage medium. The method comprises the following steps: based on preset Ndimensions, segmenting each character in the response statement, obtaining N phrase sets corresponding to each character, and taking all phrases corresponding to the character as candidate phrases; meanwhile, calculating the word frequency of each word group in the historical interview word bank; determining weight information of the phrase set; endowing the candidate phrases with the weight moreconforming to the interview scene; determining representation information of each character through the weight information; in combination with the representation information of the characters, determining the named entity contained in the response statement by adopting a preset sequence marking model with a simple structure, and storing the named entity in the blockchain network as a professionalterm without using a complex named entity extraction model, so that the efficiency of determining the named entity is improved.
Owner:PING AN TECH (SHENZHEN) CO LTD
A test device and method for testing dynamic shear characteristics between pipe piles and grouted soil
ActiveCN104374648BAvoid sureThe test result is accurateMaterial strength using steady shearing forcesMonitoring systemPressure cell
The invention discloses a test device and method for testing the dynamic shear characteristics between pipe piles and grouted soil. The test device includes a vibration platform, a pipe pile model test box, a loading mechanism and a monitoring system. The pipe pile model The test box includes a steel bottom plate, a stacked steel frame, a limit mechanism, pipe piles and sandy soil bodies arranged in the steel frame; guide chute is arranged between the steel frames, and balls are arranged on the guide chute; the steel bottom plate Hard soil is laid on the top; cement slurry is filled between the pipe pile and the sandy soil body; a sealing film is arranged on the inner wall of the steel frame; the monitoring system includes a displacement sensor, a strain rosette arranged on the outer surface of the pipe pile group and a pressure cell set in the sand body. The invention can better eliminate the influence of the boundary of the box wall, avoid the problem of scale effect and difficulty in determining the similarity ratio of the test model, and the test result is more accurate, reasonable and reliable, and provides reliable basic data for theoretical analysis and engineering practice.
Owner:GUANGZHOU INSTITUTE OF BUILDING SCIENCE CO LTD +1
High-efficiency double-layer oil filter
InactiveCN113648749AImprove filtering effectAvoid sureUsing liquid separation agentHollow article cleaningProcess engineeringMechanical engineering
The invention belongs to the technical field of oil filters, and particularly relates to a high-efficiency double-layer oil filter which comprises a filter box, a first filter structure connected to the inner wall of the bottom end of the filter box and a second filter structure connected to the inner wall of the top end of the filter box, wherein the top of the filter box is provided with a box cover; and also comprises an adjusting and cleaning device which is connected to the first filter structure and the second filter structure; the adjusting and cleaning device comprises a transmission structure and a driving structure connected to the bottom of the box cover, the bottom of the driving structure is provided with a second filtering, adjusting and cleaning structure, and a first filtering, adjusting and cleaning structure which can be disconnected with the second filtering, adjusting and cleaning structure through the transmission structure; the first filtering, adjusting and cleaning structure is arranged on the first filter structure, the second filtering, adjusting and cleaning structure is arranged on the second filter structure, gas is filtered for multiple times through the first filter structure and the second filter structure, and the effect of improving the filtering effect is achieved.
Owner:南通智德光伏科技有限公司
Seismic super-resolution inversion method based on model-driven deep learning
ActiveCN112083482BRealize seismic super-resolution inversionSeismic super-resolution inversion avoidsSeismic signal processingAlgorithmNetwork structure
The invention discloses a seismic super-resolution inversion method based on model-driven deep learning, comprising the following steps: 1) mapping each iteration in the model-driven alternating direction multiplier method ADMM to each layer in the deep network, And use the mathematics-driven method to learn the proximal mapping, complete the construction of the deep network ADMM-SRINet; 2) obtain the label data used to train the deep network ADMM-SRINet; 3) use the obtained label data to perform Training; 4) Inverting the data to be tested using the deep network ADMM-SRINet trained in step 3). This method combines the advantages of the model-driven optimization method and the data-driven deep learning method to make the network structure interpretable; at the same time, due to the increase of physical knowledge, the iterative deep learning method alleviates the requirements for the training set, making The inversion results are more credible.
Owner:XI AN JIAOTONG UNIV
Device and method for lens processing
PendingCN112771349AAvoid sureDetermine working speedEdge grinding machinesUsing optical meansComputer hardwareEngineering
The present invention relates to a device for lens processing, comprising at least one receiving device for at least one transport box, at least one measuring device, and at least one processing device. According to the invention, it is provided that at least one conveying device is provided between the at least one measuring device and the at least one processing device, that at least one handling device or handling apparatus is provided between the at least one receiving device, the at least one measuring device and the at least one conveying device, such that the at least one measuring device, the at least one conveying device and the at least one processing device can be arranged or are arranged in any number and / or orientation with respect to one another. The present invention further relates to a corresponding method for lens processing and to a processing device for lenses.
Owner:SCHNEIDER GMBH & CO KG
Method and electronic device for controlling device startup
The invention discloses a method for controlling device start-up and an electronic device. The method is applied to an electronic device including a basic input and output system, and the electronic device can be installed with a first operating system. The method includes: in the electronic device After the device is powered on and the initialization process of the basic input and output system is completed, a first sequence data packet is obtained from a server connected to the electronic device through a network startup module; based on the first sequence data packet in the first sequence data packet A preset sequence searches for the first installation program corresponding to the first operating system in M positions in turn, where M is an integer greater than or equal to 1; when the i-th position among the M positions is obtained, the When installing a program, execute the first installation program to install the first operating system in the electronic device, wherein, i is any positive integer less than or equal to M.
Owner:LENOVO (BEIJING) LTD
Management and control method and device for power distribution network equipment, computer equipment and storage medium
PendingCN112685705AImprove security management and control efficiencyImprove management and control efficiencyDigital data information retrievalData processing applicationsInformation repositoryComputer science
The invention relates to a management and control method and device for power distribution network equipment, computer equipment and a storage medium. The method comprises the following steps: acquiring personnel acquisition information of a power supply area of the power distribution network, performing analysis processing on the personnel acquisition information and personnel input information in a preset information base to obtain an analysis result, and acquiring supervision information of personnel according to the analysis result so as to realize safety management and control on power distribution network equipment according to the supervision information. According to the method, intelligent analysis processing can be performed on personnel acquisition information to determine supervision information of each personnel, and safety control on the power distribution network equipment is realized according to the supervision information so that manual personnel information analysis for determining the supervision information can be avoided, abnormal personnel can be timely and rapidly positioned and rapid management and control can be realized, and therefore, the personnel management and control efficiency is improved, and the safety management and control efficiency of the power distribution network equipment is improved.
Owner:SHENZHEN POWER SUPPLY BUREAU
A Verification Method for Structural Bonding of Composite Parts
The invention discloses a method for validating structural bonding of composite parts. The method comprises the following steps: performing positioning assembly on structural parts and encapsulating avacuum bag, and validating according to measured validation parameters of temperature, time and pressure; removing the vacuum bag after validation completion, taking out the assembly, measuring the bonding film, and determining the compensation thickness of the bonding film and the number of layers of the used bonding film according to the stress state and area of the bonding film; removing a release film on the surface of the bonding film, and directly compensating by adopting the bonding film. According to the method disclosed by the invention, the bonding film is directly pasted in the bonding area for validation, the bonding film is not removed after validation completion, and bonding film compensation is directly performed on the bonding film according to the stress state of the bonding film, so that the condition that the compensation area is determined by contrasting the validation film on the structural parts in the traditional validation method is avoided, the compensation area is accurate, and the validation operating difficulty is reduced. Moreover, the bonding film completes validation to be directly used for bonding, and the validation cost is effectively reduced.
Owner:CHENGDU AIRCRAFT INDUSTRY GROUP
A Calculation Method of Weld Fatigue Life Based on Total Strain Energy Density
ActiveCN106354898BImprove the accuracy of fatigue life calculationAvoid sureDesign optimisation/simulationSpecial data processing applicationsFatigue IntensityFatigue damage
The invention discloses a weld seam fatigue life calculation method based on total strain energy density. The method mainly comprises the steps that 1, the weld-seam total strain energy density, a life function equation and a fatigue strength coefficient, a fatigue strength index, a cyclic strengthening coefficient and a cyclic strain hardening index which are needed by half-cycle life stress and a strain function equation are acquired through a welded joint fatigue test; 2, the weld seam structure is simulated through a shell unit module, the stress-strain response of the weld seam structure under the cyclic load action is calculated through a multi-load step method, and a stress-strain hysteretic curve is output; 3, the total strain energy density is calculated according to the stress-strain response, and the hot point fatigue life and a damage value of a weld toe of the weld seam are calculated by combining the energy density with the life function equation. According to the method, contribution of elastic-plastic stress and strain to the fatigue damage is comprehensively taken into account, scalar quantities are taken as damage parameters, the position and direction problems related to vectors are effectively avoided, the calculation precision is improved, and the time is saved.
Owner:HUNAN UNIV OF TECH
Generation of detectors and detecting method
InactiveCN101604408BReduce time complexityReduce space complexityBiological modelsPlatform integrity maintainanceAlgorithmReliability engineering
The invention relates to generation of detectors and a detecting method. The method comprises the following steps: defining a maximum interval as an initial detector; then carrying out self-tolerance training on the initial detector; according to matching rules, removing a point matching a known self from the detector, simultaneously dividing the interval of the detector from the point to generate two subinterval detectors and recursively detecting each subinterval. The detectors are optimized in the process and the generated mature detectors are finally gathered to be used for system security protection. The invention breaks through the existing detector generation method and matching rules and eliminates loopholes and redundant detectors, thereby further improving the generation efficiency and detection efficiency of the detectors.
Owner:JIANGSU UNIV
A partition wall board steam curing method and partition wall board steam curing device
InactiveCN108214848BDoes not affect regulationAvoid sureCeramic shaping apparatusTemperature controlProcess engineering
The invention discloses a partition wall board steam curing method and a partition wall board steam curing device, and relates to the technical field of concrete curing. According to the partition wall board steam curing method, a partition wall board to be cured is placed on a curing layer in a curing room after being bundled; the temperature is controlled through an oil conveying pipeline for heating in a curing process; the humidity is controlled by introducing steam through a steam pipeline; the temperature and the humidity can be controlled accurately; and the flexibility is high. According to the partition wall board steam curing device, the curing room is arranged on a base; the base is moved through a traction machine; the flexibility of a curing place is high; the labour intensityof an operator is reduced in a transportation process; and the oil for heating is provided through an oil heat transfer boiler, so that the temperature in the curing room is controlled accurately.
Owner:四川省劲腾环保建材有限公司
Extraction method of suspected lymph nodes in gastric CT images based on sparse dynamic integration selection
ActiveCN103400385BAvoid sureEfficient extractionImage analysisComputerised tomographsLymph node regionsBackground information
Owner:XIDIAN UNIV
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