205results about How to "Reduce the difficulty of analysis" patented technology

The invention discloses a pipeline defect detection method based on electromagnetic ultrasonic longitudinal guided waves. The method comprises the following steps: arranging a plurality of annular magnets coaxial with a pipeline, so as to generate a radial static magnetic field on the surface of the pipeline; coaxially sleeving two sides of each annular magnet array with solenoid coils, so as to generate circumferential inducing vortex in the to-be-detected pipeline; and stimulating longitudinal-mode guided waves under the combined action of the circumferential inducing vortex and the radial static magnetic field, wherein when encountering a defect, the longitudinal-mode guided waves are reflected, and reflection echoes cause change of sensing voltage of a sensing coil when passing through a sensing coil, so as to judge that whether the defect exists in the pipeline or not. The invention further discloses a detection device and a sensor for detecting the pipeline by virtue of the device and the method. According to the method, the radial magnetic fields at the edges of the magnet arrays are adequately utilized, and the uniform radial magnetic field does not need to be generated, so that the complexity of the sensor is reduced; meanwhile, a single longitudinal-mode guided wave signal can be obtained, so that the defect signal analysis difficulty is reduced, and the detection process is rapid and efficient.

The invention discloses a network attack retrospective analysis method and network security equipment. The network attack retrospective analysis method comprises the steps that the network security equipment collects multidimensional historical network logs; when a network attack is detected, the network log is acquired, retrospective analysis is performed according to the network log and the historical network logs, and network attack data are acquired according to the result of retrospective analysis; and the network attack data are compiled as a safety event corresponding to the network attack. The accurate network attack data can be automatically acquired so that analysis difficulty of the network security event can be greatly reduced and great conditions can be provided for network security protection.

The invention discloses a method and a device for detecting an abnormal current of a circuit. The method comprises the following steps of: locating a specific position with abnormal current consumption by detecting an input current of an electronic product; adjusting the voltage of a precise power supply of the electronic product, observing the change situation of the current consumed by the product along with the input voltage, and quickly distinguishing that the abnormal current occurs in an LDO (Low Drop Output) circuit, a DC-DC switch power supply circuit or a direct battery-powered circuit. Furthermore, for a complex multipath LDO circuit, the current consumption on each path of the LDO circuit can be measured by an external power supply forced substitution method. The invention can simplify detection operations, shorten the detection time, reduce the analysis difficulty and increase the efficiency of detecting abnormal current in circuits and the detection success rate.

The invention discloses an insulation diagnostic method for high-voltage equipment in a charged operating state. According to the method, by means of the electromagnetic induction principle, impact sweep frequency pulse signals output by a frequency conversion power signal source are coupled into the high-voltage equipment through a secondary loop of detected high-voltage equipment, then inductive coupling is carried out on leakage currents after the impact sweep frequency pulse signals are coupled into the detected high-voltage equipment through the loop, and equivalent earth impedance or dielectric loss factors of the high-voltage equipment operating with electricity are calculated by detecting release features of energy generated when the impact sweep frequency pulse signals are coupled and injected to an equivalent electrical loop of the high-voltage equipment, so that whether insulation breakdown discharge to the ground from the high-voltage equipment exists is analyzed. In comparison with the prior art, operating personnel do not need to be close to the primary high-voltage end of the equipment, synchronous transmitting and collecting are carried out by means of a frequency conversion test signal transmitting source and a corresponding receiver, the capacity of resisting disturbance is high, and the insulation state of the high-voltage equipment can be detected with high sensitivity on the condition of not cutting off the electricity.

The invention discloses an extraction method for influence factors of carbon exchange of an ecosystem and a system. The extraction method includes steps of 1), acquiring attribute data of carbon flux samples in a carbon flux data observation station; 2), inputting the attribute data, which are obtained in the step 1), of the carbon flux samples, selecting the optimal combination by the aid of proposed fuzzy rough and reduction integrated algorithm of shuffled frog leaping or quick fuzzy rough and reduction integrated algorithm based on importance, and finding an environmental factor set with the closest relationship with carbon flux; and 3), realizing modeling and stimulating for various environmental factors in the environmental factor set obtained from the step 2) by the aid of a neural network, and obtaining extraction rate of the environmental factors of the carbon flux. The extraction system comprises a data import module, a factor extraction module, an input module and an evaluation module. By the aid of the extraction method and the system, the range of correlation factors of the carbon flux in the researched ecosystem can be effectively reduced, research efficiency is improved, and inherent law among the environmental factors is found.

The invention provides a method for electronizing handwriting. The method includes: dividing a handwriting area of a solid handwriting object into a plurality of first subareas; collecting and storing handwriting information in the handwriting area on the solid writing object; looking through the handwriting information, judging each first sub-area where each handwriting falls, and gathering the collected handwriting into the plurality of first subareas; and identifying the handwriting information in each first subarea independently and converting the handwriting information into an electronic format. The invention further provides a system for electronizing the handwriting. The system comprises the solid handwriting object, an information collecting device and a handwriting electronizing platform. The handwriting area of the solid handwriting object is divided into a plurality of first subareas. The information collecting device is used for collecting the handwriting information and importing the handwriting information into the handwriting electronizing platform. The handwriting electronizing platform comprises an information inserting port and an identifying engine. The method and the system effectively improve identification accuracy degree of the handwriting.

The invention provides an SFMEA and SFTA reverse comprehensive analysis assisting method, and belongs to the field of software reliability and safety analysis. The method mainly includes assistance in building of a failure tree and assistance in SFMEA by means of a function structure chart, a data flow diagram and a control flow chart. The assistance in building of the failure tree is the main content of the method. The function structure chart, the data flow diagram and the control flow chart are obtained; a top event is determined; the function structure chart, the data flow diagram and the control flow chart are made used of separately or comprehensively to assist in building the failure tree; the SFMEA is assisted in by means of the function structure chart and the data flow diagram. The method is used for assisting in SFMEA and SFTA reverse comprehensive analysis by means of the function structure chart, the data flow diagram and the control flow chart, and can effectively reduce analysis difficulty and make analysis concepts clear and make analysis to be fuller.

The invention discloses a method for performing static analysis on C++ virtual function call upon cfg (configuration) files. The method is characterized by comprising the following steps: firstly, creating a multi-class new virtual function chain table and a multi-class virtual function initial position offset chain table; secondly, during the virtual function call, according to the dynamic type information and the static type information of a class-type pointer, returning the names of called virtual functions through the new virtual function chain table and the multi-class virtual function initial position offset chain table; uniquely determining the called virtual functions by combining parameters during the virtual function call. By using class files of compiler intermediate files of a compiler, the new virtual function chain table and the like according with the table creation rule of the compiler; by recording the static type and the dynamic type of the class-type pointer and combining the created new virtual function chain table and the like, information during dynamic operation is accurately acquired during the static analysis, and the called virtual functions are accurately determined, and therefore the accuracy of the static analysis is improved, and the program logic is satisfied more.

The invention discloses a method for multi-period calculation and display of the user retention rate.The method comprises the following steps that one day or one year is set into N time periods, the user activation quantities within different time periods are recorded, the user retentions within each subsequent time period are recorded, the user retention rate is calculated, and after a certain time period is selected, the retention of each time period after the time is displayed on an image.The method facilitates data viewing of a developer or an operator and reduces data analysis difficulty.The method is efficiency, quick and convenient and high in calculation accuracy rate, has a very high usage value and reduces the data query difficulty and analysis difficulty of a user.

The invention belongs to the technical field of an unmanned aerial vehicle, and discloses a novel composite rolling attitude control system and method. The control method integrates a principle for adjusting a flight attitude by utilizing a rudder surface and a conventional helicopter tipping tray periodically-pitch-variable principle; by utilizing a redundant control concept, an aerocraft rolling passage is controlled by a rudder system, the auxiliary compensation for the rolling passage is carried out by virtue of a rotary wing system, an airflow direction is limited by virtue of a duct, and the rudder system is controlled; and the control system comprises a controller, a rudder system, a rotary wing system and a duct. The novel composite rolling attitude control system is high in air passing capacity, compact in structure, reasonable in design and capable of realizing automatic hovering and precise attitude control and has advantages of small space size, large effective load, high control response sensitivity, high system stability, high robustness and the like.

The invention discloses a high-resolution phase locked loop. The high-resolution loop phase locked loop comprises an input frequency divider, a phase detector connected with a reference frequency divider, a low pass filter connected with the phase detector, a voltage-controlled oscillator connected with the low pass filter, a multiphase loop frequency divider connected with the voltage-controlled oscillator and a phase frequency detector, and an output frequency divider connected with the voltage-controlled oscillator. The high-resolution phase locked loop provides high-resolution and low-noise clock signals, and the multiphase loop frequency divider provides high-resolution feedback signals for the phase frequency detector. The high-resolution phase locked loop improves the resolution of output signals of a phase locked loop in conditions of reducing loop analysis difficulty and reducing resource consumption.

The invention provides a system and method for analyzing and controlling coupled dynamic characteristics of a robot. The analysis and control system comprises a computer, wherein a modeling module B1 and an analysis module B2 are arranged in a computer C; and a signal analysis system B5, a detection module B4 and a control module B3 are arranged between the computer C and the robot. According to the method, coupling factors existing in the robot system can be considered, the analysis result precision of the dynamic characteristics is high, and the problems of errors, even mistakes, caused by neglecting of the coupling factors can be effectively solved. Meanwhile, feedback control of the coupled dynamic characteristics of the system can be realized, and comprehensive analysis and integrated design of the robot system can be facilitated. The system disclosed by the invention is based on system modularization and is easy to realize and simple in operation, the complicated theoretical modeling calculation process is avoided, the analysis difficulty is reduced, and the problem that errors are easily caused due to lots of calculations and solutions can be effectively solved.

The invention provides an exhaled gas marker detection method based on a radial basis function neural network and application, and relates to the field of gas-sensitive sensing detection. The method comprises the following steps: to begin with, detecting and calibrating a human body exhaled gas marker by utilizing a gas-sensitive sensor; constructing a multi-dimensional sensor array to test exhaled gas in a simulated illness state and obtaining a large amount of sample data; then, carrying out pretreatment on the sample data by using principal component analysis-particle swarm optimization-radial basis function neural network algorithm model to reduce the variable dimension and reduce the cross sensitivity of a gas-sensitive sensor; finally, carrying out exact prediction on the concentration of the human exhaled gas, so that the reliability is good, and the universality is high; and finally, establishing a relationship between the obtained sample data and corresponding disease states,constructing a human body disease diagnosis database model system, and providing guidance for prediction of related diseases of the exhaled gas.

The invention discloses a missile and carrier rocket modal test method comprising the method of vibration mode decoupling measurement sensor arrangement and multi-exciter excitation combination. Vibration mode decoupling measurement sensors are arranged in three quadrant lines of the external side of a missile or carrier rocket structure, wherein one quadrant line adheres two-way sensitive sensors and the other two quadrant lines adhere one-way sensitive sensors; the vibration mode data of the modal at excitation points are extracted; a data table of correspondence of the numbers of the excitation points and the vibration mode data is established; the absolute values of the vibration mode data of the data table are ordered in a decreasing way and bound with the number order of the excitation points; the numbers of the first and second excitation points and the symbols of the corresponding vibration mode data are extracted; and the situation that the optimization scheme aims at the same excitation position is merged so that the optimized excitation combination is obtained. The number of sensor measurement channels is reduced, the effectiveness of data acquisition is enhanced, the data volume of data acquisition is reduced and the difficulty of data analysis and processing is reduced.

The invention discloses a data interaction method and device of an air conditioning unit, wherein the method comprises the following steps: a first controller of the air conditioning unit receives controlling information sent by a second controller of the air conditioning unit and meets predetermined frame format; the first controller analyzes the controlling information which meets the predetermined frame format according to the controller data table stored in a database, and obtains the controlling indication in the controlling information, wherein, the controller data table records parameters of a plurality of controllers including the first controller and the second controller; and the first controller conducts the operation the controlling indication indicates. According to the method provided by the invention, the problem that the extensibility is poorer when the air conditioning unit conducts data communication in relevant art is solved, so as to enable the air conditioning unit to be provided with better expansibility when conducting data communication, and decrease the parsing difficulty of the data.

The invention discloses a transformer station equipment function association database establishing method and an event association information group filtering method. The transformer station equipment function association database establishing method comprises the following steps: establishing a transformer station equipment function association model, establishing a transformer station equipment function association database template, parsing an SSD file, parsing an SCD file, and establishing an instantiated equipment function association database by using the transformer station equipment function association database template and the equipment information obtained from the SSD and SCD; and the event association information group filtering method comprises the following steps: capturing the state quantity displacement information of GOOSE network message and MMS network message, and filtering the network messages by using information association relationship determined by the station equipment function association database in order to obtain an event association information group. The transformer station equipment function association database is used to realize information filtration, all information serving for transformer station secondary equipment function analysis is rapidly extracted, and the information is displayed together with a graph for describing the function relation in order to provide direct help for rapid decision of scheduling personnel.

The invention discloses a medical insurance supervision method. The medical insurance supervision method is realized based on an intelligent decision. The medical insurance supervision method comprises the following steps: obtaining treatment data of an insured person; Extracting a preset field in the treatment data according to a preset model; And analyzing the preset field based on the preset model, and extracting suspected abnormal cases according to an analysis result. The invention further discloses medical insurance supervision equipment, a medical insurance supervision device and a computer readable storage medium. According to the technical scheme, the difficulty of medical insurance supervision is reduced, and the accuracy and the tightness of medical insurance supervision are improved.

The invention belongs to the field of environmental pollutant detection, and discloses a rapid analysis method of small-size microplastic in a water sample. The method comprises the steps of: a. firstly, performing primary screening on a collected water sample in a glass bottle; b. diluting filtrate obtained by the primary screening with high-purity water; c. digesting the remaining mixed solution(a portion of about 50ml is taken for the determination of conventional water quality parameters) with a hydrogen peroxide solution for more than 48h; d. performing vacuum filtering on the digested water sample by using a dual filter membrane system comprising glass fiber filter paper and a metal mesh filter membrane; e. drying the filtered metal mesh filter membrane for more than 24h; f. performing primary observation on the dried metal mesh filter membrane under an optical microscope; and g. performing observation, scanning, sample measurement, statistics and analysis on the metal mesh filter membrane by using a microscopic infrared system. The entire analysis method is easy to operate and short in time and provides a simple and effective new idea for the analysis of the small-size microplastic in the water sample.

This invention provides a analysis method and system for protocol information composed of some IEs. Wherein, the method comprises following steps: 1) dividing and selecting a set rule signs for control action from all logic control actions used in protocol analysis process, the control action comprises: positioning IE position, connecting and uniting IE, calculating, deciding and outputting the IE; 2) generating a general explainer to recognize the said rule signs; 3) setting rule database unit according to a exact protocol; 4) when receiving the bit stream, the said explainer reads rule statement from rule database, executes every control action set by rule sign, and completes the analysis. When the protocol changes, it needs just to modify the rule database unit instead of the said explainer; thereby, the invention decreases modification time and analysis difficulty.

The invention discloses a log file storage method, a mobile terminal and a computer-readable storage medium. The method comprises the following steps: according to an initial configuration partition table file, downloading a corresponding compiled partition image to a storage space in order to form each partition, and generating a partition mounting script, wherein the formed partition comprises alog storage partition; when starting the system, analyzing the partition mounting script, obtaining the partition information of the log storage partition, and mounting the log storage partition according to the partition information; after the system is started, reading the log files at each preset node in real time, and storing the read log files in the log storage partition. The invention caneffectively save the log file in the test process, reduce the difficulty of problem analysis, and improve the test efficiency.

The embodiment of the invention provides router protocol message tracing method, device and system, relating to the field of communication and having the advantages that Debug commands of the operation are reduced; the knowledge and skill threshold of operation and maintenance personnel is reduced; and each protocol layer can be uniformly traced. The method comprises the following steps of receiving a trace command containing protocol message tracing conditions input by a client; successively and respectively tracing the protocol message by utilizing each protocol layer processing module through which the corresponding protocol message passes according to the tracing conditions; receiving the tracing information of the protocol message reported by each protocol layer processing module; and displaying the tracing information to the client. The embodiment of the invention is used for the router protocol message tracing.