591results about How to "Achieve preservation" patented technology

The invention relates to the field of occupation of the mass data memory space and backup and recovery of historical data, and in particular provides a data recovery and synchronization method based on log snapshots. The data recovery and synchronization method based on the log snapshots adopts log files with given format to record changed information of data of databases each time; the changed information is formatted, positioned and stored into the log files; an analytic program calls an approximate algorithm to acquire effective data on set time points by means of multithreading; the data is temporarily stored into a temporary table, and abstract data snapshots are generated according to the temporary table; and data recovery and synchronization is realized by utilization of the snapshots. The data recovery and synchronization method based on the log snapshots can greatly reduce the burden of a database system, obviously improve the efficiency of the database system and an application system, save a great deal of memory space, and reduce the operation cost of the systems.

The invention relates to a log acquisition device and a log acquisition method. The device comprises at least one client for collecting logs and at least one server for recording the logs, wherein log information is transmitted between the client and the server through a network in real time. The method comprises that: the client generates the log information, writes the log information into a disk file of the client, reads the log information from the disk file of the client, and sends a connection request to the server; after receiving the request, the server establishes network connection with the client and receives the log information; the server sends the received log information to a server log writing module and a server log writing database module; the server log writing module writes the log information into the disk file of the server; and the server log writing database module writes the log information into the database. When the device and the method of the invention are used, the data analysis is more real-time, and the distributed acquisition of the logs is realized.

The invention relates to a system for identifying the relationship among a user group and users by the aid of user feature data, which comprises a user data warehouse, an intermediate data acquisition and storage device, a feature data acquisition and storage device, a feature data identification and analysis device and a display output device, wherein the user data warehouse is used for storing original user data; the intermediate data acquisition and storage device is used for extracting data related to user features from the user data warehouse; the feature data acquisition and storage device is used for acquiring the user data processed by the intermediate data acquisition and storage device and converting the acquired user data into the user feature data; the feature data identification and analysis device is used for analyzing and processing the user feature data stored by the feature data acquisition and storage device and identifying the relationship among the user group and the users; and the display output device is used for outputting corresponding results. The invention further discloses a method for identifying the relationship among the user group and the users by the aid of the user feature data. The system and the method realize identification of the user features and the relationship.

The invention discloses a method for preserving nucleic acid amplification reagents at normal temperature. Partial nucleic acid amplification reagents or all reagents are converted to solid state through a solidifying process and preserved stably at normal temperature. The invention further discloses a closed nucleic acid chromatographic test paper detection kit preserved at normal temperature. The kit comprises a nucleic acid extraction reagent of a sampler, the nucleic acid amplification reagent preserved at normal temperature, a closed chromatographic test paper detection device and an innocent treatment method of nucleic acid amplification products. The closed chromatographic test paper detection device comprises immunochromatographic test paper and a closed detection device, wherein the immunochromatographic test paper is fixedly arranged in the closed detection device, and sample liquor detected cannot be contacted with external environment. In addition, the invention further discloses a method for nucleic acid detection by using the kit. According to the invention, the nucleic acid reagents can be conveyed and preserved at normal temperature and extracted simply and quickly, and the nucleic acid amplification products are hermetically, quickly and sensitively detected, so that cross infection is avoided.

The invention belongs to the technical field of plant tissue culture and particularly relates to a factory seedling cultivating method of actinidia arguta. The method is mainly technically characterized by comprising the five steps of: preparing culture media, selecting and disinfecting explants, inoculating, subculturing and transplanting in a sand bed. The factory seedling cultivating method of actinidia arguta is mainly provided on account of the conditions that actinidia arguta is in a wild state in all northeast areas, and the traditional cultivating modes which comprise sowing propagation, cuttage propagation and grafting propagation cause the problems that the variation of offspring characters is serious, male plants are difficult to separate from female plants, resources are seriously damaged, the seedling cultivating speed is low, the characters of the female plants are difficult to keep, the plants are easily infected with bacteria, the survival rate of the seedlings is low, and the like. Induced buds are subcultured and then directly transplanted in the sand bed, the rooting culture process is omitted, the seedling cultivating period is shortened by 50-60 days, the seedling cultivating cost is greatly lowered, the survival rate of the seedlings is obviously increased, the plant infection rate is reduced, excellent female plant characters are kept, and the variety degrading problem is solved.

The invention provides a micro miniature aircraft ground test attitude recorder. The recorder combines sensors such as an MENS gyroscope, an accelerometer and a digital compass, so that the original flight attitude data of an aircraft can be obtained; based on utilization of the mean filtering method for processing, the flight attitude data is partitioned and packaged as per a defined data format; the partitioned and packaged data is sent by a wireless sending module to a data combining unit of an upper computer for processing in the integer form and in a real-time manner; the fusion of flight attitude data is realized by utilizing an attitude resolving unit, so that the flight attitude can be updated quickly in a real-time manner. The attitude resolving unit mainly applies the quaternion complementary filtering method, and can efficiently integrate the dynamic property of the gyroscope and the static response property of the accelerometer so as to compensate the integral error of the gyroscope. According to the data obtained after attitude resolution, a visualization unit module drives an aircraft model based on OpenG1 graphic base development to realize visualized simulation of the flight attitude, and presents the angular position movement in a wavy curve by utilizing a waveform drawing module.

The invention provides a method and device for workflow data persistence. The method includes extracting declared service information in configured files of a server terminal; establishing a dynamic proxy class for a declared server interface in the configured files of the server terminal, and generating strategy configured information of the server interface; acquiring target workflow data to be subject to persistence; transferring the server interface for workflow data persistence to acquire the dynamic proxy class, and assembling the target workflow data into an event in the dynamic proxy class; running the event according to the configured information of the workflow data persistence strategy, acquiring workflow data persistence server information corresponding to the event, and performing persistence on the target workflow data according to the workflow data persistence server information. By the aid of the method and device, maintaining cost can be saved, and scalability of workflow products can be enhanced.

The invention relates to a device for measuring rotational inertia and friction moment of a ball screw. The device comprises a bottom plate, two linear guide rails, the ball screw, a torque sensor, a servo motor, a mobile platform and two friction moment measuring mechanisms. Each linear guide rail is provided with two sliding blocks. The two ends of the ball screw are supported by the part, located between the two linear guide rails, of the bottom plate in a rotary mode through a fixed supporting base and a floating supporting base. One end of the torque sensor is connected with the end, supported by the fixed supporting seat, of the ball screw through a coupler. An output shaft of the servo motor is connected with the torque sensor through a coupler. The two friction moment measuring mechanisms are arranged on the two sides of a screw nut base respectively. Each friction moment measuring mechanism comprises a cantilever. A connecting sleeve is arranged at the tail end of each cantilever. Each connecting sleeve is connected with a sliding bar through a vertical linear bearing. The other end of each sliding bar is connected with a pressure sensor. Each sliding bar is sleeved with a spring. The bottom of each pressure sensor is connected with a universal ball. The bottom of each universal ball makes contact with a linear slab which is parallel to the ball screw. The linear slabs are tightly connected to the bottom plate.

The invention relates to an unmanned vehicle multi-sensor data synchronous acquisition system which comprises an environment awareness data acquisition device, an Ethernet switch 1, an inertial navigation data acquisition device, a vehicle control unit, an instruction issuing and vehicle state feedback Nport, an Ethernet switch 2, a planning industrial personal computer, a sensing industrial personal computer, a CAN data acquisition device, a CAN network, and a CAN network data acquisition device. The planning industrial personal computer stores CAN network data, a corresponding relation between bottom layer time issued by the vehicle control unit through the CAN network and the time of the timer of the CAN data acquisition device, and inertial navigation data. The sensing industrial personal computer stores environment awareness data, and achieves synchronous association of the CAN network data, the environment awareness data, and the inertial navigation data using the bottom layer time issued by the vehicle control unit as marks. A test shows that the unmanned vehicle multi-sensor data synchronous acquisition system is stable and reliable, and provides technical guarantee for the synchronous replaying of the unmanned vehicle environmental information data, the navigation and positioning data, the vehicle attitude information and vehicle bottom state information.

The invention discloses digital video intelligent monitoring equipment based on a dual camera and a data processing method. The digital video intelligent monitoring equipment is composed of two camera units, a camera trimming control unit, two video data acquisition units, a data storage unit, a display unit and a dump data processing unit, wherein the camera units are respectively provided with high resolution and common resolution. The invention adds the high-resolution camera, controls the high-resolution camera and intelligently monitors the monitoring area image in real time so as to store the image with larger variation in the monitoring area at the data rate of 2 frames / second to furthest reduce the problem of data volume increase brought by adding the high-resolution monitoring image; and meanwhile, the requirement of distinguishing high-resolution image details to the monitoring area is ensured, and the monitoring efficacy is greatly improved.

The invention discloses a method and device for scanning multiple identity cards. The method comprises the following steps of: scanning the both surfaces of the multiple identity cards in a scanning area; performing edge extraction on scan images; performing the procedures of positioning, cutting and correcting by rotation on the scan images subjected to the edge extraction, thus obtaining a scan image of each identity card; performing characteristic extraction on each scan image of the identity card to obtain a characteristic pattern of the scan image of each identity card; comparing the characteristic pattern of the scan image of each identity card with a characteristic database storing standard characteristic patterns of the identity cards to perform orientation judgment and orientation correction on the scan image of each identity card, thus obtaining a corrected scan image of each identity card; and splicing a front image and a back image of each corrected scan image of each identity card, and then outputting a spliced image. The method and the device ensure that customers can conveniently perform double-face scanning operation on the multiple identity cards, are high in scanning speed and efficiency, provide good user experience, and can be widely applied to the field of scanning.

The invention relates to the field of experiment test instrument of a soil engineering material of geotechnical engineering and in particular relates to an intelligent soil engineering shear rheometer. The rheometer consists of an experiment platform, a loading system, a data acquisition system and a data processing system, wherein the experiment platform ensures the horizontality and stability of an experiment test; the loading system consists of a vertical loading system and a horizontal loading system, and realizes the loading through weights to ensure the load accuracy; the data acquisition system consists of a displacement meter and a tension sensor, has a relatively high accuracy, transmits and receives a data signal in a wireless manner, and ensures remote processing and monitoring of an experiment; and the data processing system realizes the functions of real-time automatic acquisition, storage, display and processing of data through software development. Compared with the prior art, the intelligent soil engineering shear rheometer provided by the invention has simple operation steps and relatively high experiment accuracy, realizes remote operation, and has a relatively high degree of intellectualization and relatively great application values for a soil engineering rheological test experiment.

The invention discloses an on-line system for automatically monitoring an oil state of steam turbine oil in use. The system comprises a sampling part, a signal acquisition control part and a data transmission and management part, wherein the sampling part acquires a signal of an acquirer and inputs the signal into a signal acquisition control part through a cable for signal processing and transmission; and the data transmission and management part analyzes the signal through communication between a lower computer and an upper computer according to software data of the upper computer. The design concept is that the system can monitor the viscosity and the moisture content of the steam turbine oil and the change of the particle pollution grade in real time and on line; when a viscosity index, a moisture content index or a particle pollution grade index are greater than a set average threshold value or a peak threshold value, the system sounds an audible and visual alarm and indicates workers on the spot to take measures for a steam turbine lubrication oil system; and a phenomenon of running failure of a steam turbine, which is caused by the change of the characteristic of steam turbine lubrication oil, can be avoided.

The invention discloses an electronic recording and remote diagnosis digital slit lamp system and a method, relates to the field of optical instruments and remote communication control, and aims to solve the problem about electronic recording, reproduction and remote diagnosis based on an image of a slit lamp. The electronic recording and remote diagnosis digital slit lamp system comprises an eye part of a patient, a digital slit lamp microscope end, a communication unit and a plurality of clients, wherein the digital slit lamp microscope end irradiates the eye part of the patient; the digital slit lamp microscope end, the communication unit and the clients are sequentially connected with one another so as to transmit pathological information of the eye part of the patient; and the clients remotely process and reproduce the pathological information of the eye part of the patient in the form of an image and can remotely control the digital slit lamp microscope end through the communication unit to acquire optical information of the eye part of the patient. The system and the method are mainly used for performing electronic recording, reproduction and remote diagnosis on the image of the slit lamp.

A method and device for controlling data redundancy in cloud storage. The core of the present invention is to create a corresponding virtual data copy counter for each stored data in the cloud storage layer and write it into an associated database together with other relevant information such as the data summary and storage location. The terminal user uploads the summary of the operated data before requesting the data operation; if there is a virtual data copy counter associated with the summary of the operated data, the user's upload, delete and other operations are converted into operations on the virtual data copy counter ( Upload is transformed into a virtual data copy counter plus one, and deletion is transformed into a virtual data copy counter minus one); if the summary of the manipulated data has no virtual data copy counter associated with it, the end user needs to upload the manipulated data, and in the associated Relevant information is saved in the database; at the same time, the associated database will also save the name (such as: file name, data table name, etc.) of the data represented by the summary in the end user's local storage, so that the end user can query, download, and delete.

The application discloses a display terminal and an electronic device; the display terminal comprises a flexible screen, a scroll, and a first supporting structure. The first side of the flexible screen is fixedly connected to the scroll, and the flexible screen can be expanded or coated on the scroll along the rotation of the scroll; the first supporting structure is arranged at the second side of the flexible screen, and the first side is adjacent to the second side; the first supporting state can keep the flexible screen under a straight state when the flexible screen is unfolded. Through arranging the scroll, the flexible screen can be coated on the scroll along with the rotation of the scroll, so as to store the flexible screen; when the flexible screen is unfolded, the flexible screen can keep straight state by the supporting structure; thus a user needs not manually or use another structures to momentarily keep the structure state of the flexible screen; therefore, the using experience of a user is obviously improved.

The invention discloses a handwriting digital achieving device and method. The handwriting digital achieving device comprises a hollow pen body and a pen refill used for paper writing. The pen refill is arranged in the pen body, and an inertia measurement system, a pen point pressure induction system, a control unit, a wireless communication module and a battery are further arranged in the pen body. The pen point pressure induction system outputs digital signals to the control unit. The control unit judges that a pen point is in a writing state or a pen raising state according to the digital signals. The inertia measurement system measures the acceleration generated when the pen point is used for writing and outputs the acceleration to the control unit. The control unit solves the integral of time according to the acceleration output by the inertial measurement system, the writing speed of the pen point is obtained, the integral of time is solved again, displacement of the pen point on a paper plane is obtained, and therefore the information of the position, relative to the initial position, of the pen point on the paper plane is obtained. According to the handwriting digital achieving device and method, traditional paper writing is achieved, meanwhile, handwriting digital operation is achieved, the writing experience and habits of traditional paper writing are retained, and popularization and promotion of the handwriting digital achieving device are facilitated.

The invention provides an oil level monitoring method of an oil storage system of an oil-immersed transformer. The oil level monitoring method comprises the following steps that first, a pressure sensor is mounted on the oil-immersed transformer for collecting pressure signals to calculate the average temperature of transformer oil; second, the expanding volume of the transformer oil is calculated according to the average temperature of the transformer oil; third, the oil level of the oil storage system is calculated according to the expanding volume of the transformer oil and the shape of the oil storage system of the oil-immersed transformer to obtain corresponding oil level signals; when the oil level or oil pressure exceeds a set safety value, a monitoring terminal sends out alarm signals. The invention further provides an oil level monitoring system based on the oil level monitoring method. The oil level monitoring system comprises the pressure sensor arranged on the transformer and the monitoring terminal connected with the output end of the pressure sensor. The monitoring terminal is used for converting the pressure signals collected by the pressure sensor into oil level signals and meanwhile monitoring the oil level signals and the pressure signals. When the oil level signals or the pressure signals exceed the safety value, the monitoring terminal sends out an alarm.

The invention discloses a distributed storage method of underground water of a mine. The method includes the following steps: A. prospecting underground space of a mining region to obtain stratal basic geological data; B. observing the underground water of the mine to obtain flow field distribution condition, water quality data and water pressure data of underground water; C. determining one or a plurality of goafs which cannot be penetrated by the underground water to be water storage spaces of a distributed underground reservoir according to the stratal basic geological data obtained in the stepA and the flow field distribution condition, the water quality data and the water pressure data of the underground water and obtained in the stepB; and D. enabling the underground water produced in the coal mining process on the adjacent working face to flow to the water storage spaces naturally in seepage mode when the certain water storage spaces are formed. By means of the method, reasonable storage of the underground water of the mine is achieved, and effects on growth and restoring of ecological environment can be reduced.

The invention discloses a bone-defect regeneration and repair tissue-engineered bone, as well as a construction method and an application thereof. The tissue-engineered bone is a composite laminated structural body formed by three layers of mesenchymal stem cell polymers and two layers of bone matrix particles, wherein the composite laminated structural body is a complex formed by mesenchymal stem cell polymers and bone matrix particles which are alternately arranged; the mesenchymal stem cell polymer comprises mesenchymal stem cells and extracellular matrix which is secreted by the mesenchymal stem cells and is distributed around the mesenchymal stem cells. The tissue-engineered bone formed by adopting the construction method can be used for simultaneously compounding living cells and active factors, the repairing and reconstructing process is quick, the joint of new bone and surrounding autogenous bone is complete and uniform in thickness. The tissue-engineered bone is suitable for bone-defect regeneration and repair, physiological regeneration of bones is realized, and the repairing treatment effect of bone defect is improved.

The invention discloses a hydraulic engineering digital archive system based on a BIM+GIS. The hydraulic engineering digital archive system comprises an archive data acquisition system, an archive data integration system, a BIM+GIS platform, an archive management system and an archive application system. The BIM+GIS platform takes a three-dimensional model as a carrier; the correlation between thestructured IFC model data and the unstructured document data is realized; meanwhile, a portal interface of the whole archive system is formed. In the invention, a BIM+GIS technology is taken as a core, data communication and sharing with various application systems are realized, scattered and disordered archive information in a water conservancy project is hooked with a three-dimensional model, interactive query and linkage management based on spatial position information are realized, and an informationized and efficient archive management mode is innovated.

The invention discloses a leakage-current monitoring system in a flashover process of an icing insulator. The monitoring system includes a front end circuit and a data acquisition and processing device. The front end circuit includes a diverter for signal extraction. The diverter used for the signal extraction is connected with the front end circuit used for signal conditioning through a transmission cable. The front end circuit used for the signal conditioning is connected in parallel with a DC power-supply circuit; the data acquisition and processing device includes a data acquisition card, an industrial personal computer and a data storing, processing and analyzing platform, which are connected in order; and the data storing, processing and analyzing platform displays the waveform of the leakage current and stores, analyzes and prints out acquired data. The leakage-current monitoring system in the flashover process of the icing insulator is capable of monitoring the leakage current and development and changes of local electric arcs in the flashover process of the icing insulator so that measurement, storage and analysis of a current completing process are realized.

The invention discloses a scene layout saving and reappearing method based on father-son constraints. The method comprises the following steps: extracting hierarchical and spatial relationships of each furniture object from a designed indoor scene, and saving the scene layout; randomly completing initial indoor layout in a newly selected indoor house type; and continuously iterating an optimized objective function in a layered manner by adopting a simulated annealing method until the requirements are met, so that the scene layout reappears in the new indoor house type. According to the method disclosed by the invention, evaluation factors for describing the rationality of the scene layout are sorted and popularized, scene layout rationality representation is quantitatively proposed, comprehensive constraint information is provided for a saving template, and thus a foundation is laid for subsequent scene layout reappearing. In addition, according to the method disclosed by the invention, the scene optimization operation is divided into layered optimization operations of father-son constraint trees by introducing the father-son constraint trees, and the great operation is divided into small operations so as to be completed layer by layer. Experimental results show that the method is low in computing time complexity and has excellent layout results.

The invention discloses a webpage input data protection method and a webpage input data protection system. The method comprises the following steps of: identifying webpage input data required to be protected in a webpage; storing the webpage input data required to be protected; and if an error phenomenon takes place before a user finishes a certain input process, providing the webpage input data for the user aiming at the input process. By the method and the system, the data input by the user can be protected and shown to the user; and even if error conditions such as browser collapse and the like occur, the data input by the user can also be stored for the user to use.

The invention provides an electronic contract online signing process action recording method. The method includes the following steps that: a virtual contract signing room is established, and two contracting party users complete the online contract signing process of an electronic contract in the virtual contract signing room; step S2, the virtual contract signing room receives the login requestsof the contracting users, and authenticates the identities of the contracting users, after the identities of the contracting users pass authentication, the contracting users enter a contract reading area and interprets the electronic contract, the interpreting process of the electronic contract by the contracting users is recorded; the contracting users enter a contract exchange region during thesigning process of the electronic contract, so as to exchange with relevant users on the contract and interpret the contract together with the relevant users; and the contracting users enter a contract confirmation region and confirm the contract after having no objections to contract terms and contract items in the electronic contract. With the method of the invention adopted, the signing processof the electronic contract is optimized, the action recording of the online contract signing process of the electronic contract is realized, evidences of the signing of the contract are reserved, anddispute problems which appear after the signing of the contract can be decreased.

The invention relates to a carbon nanotube film carrying structure, which comprises a body, wherein the body is provided with a surface; the surface of the body is provided with a carbon nanotube film carrying area; the carbon nanotube carrying area is provided with a plurality of depression structures; and the total depression area of the plurality of depression structures is larger than or equal to 80 percent of the area of the carbon nanotube film carrying area. The carbon nanotube film carrying structure is used for carrying a carbon nanotube film-shaped structure, and the carbon nanotubefilm-shaped structure can be completely separated from the carrying structure after being contacted with the carrying structure. The invention further relates to a method for using the carbon nanotube film carrying structure.

The invention relates to a traffic collection system based on video monitoring, and the method comprises the steps: detecting the traffic flow of a road through the image processing and recognition technology and a video signal; achieving the automatic statistics of the number of motor vehicles running on a traffic road segment and the calculation of the running speeds through the real-time detection of the traffic condition information of the road and various types of behaviors of traffic targets, thereby achieving the monitoring of the traffic condition information of the road; building a road network scheduling system through the real-time data collected by a traffic flow monitoring system; issuing the collected traffic flow information through an LCD screen. The method provides the real-time road conditions, and achieves the guide of vehicles to pass reasonably.

A material detection and remote monitoring system for realizing the supervision comprises a material testing machine, a sensing detection element, an actuating element and a full-automatic testing machine controller, the material detection and remote monitoring system comprises a control layer, a detection layer and a supervision layer; the control layer comprises the material testing machine, a computer for local control, the sensing detection element, the actuating element and the full-automatic testing machine controller; the full-automatic testing machine controller comprises a signal collecting / processing module, a drive actuating module, a local data communication module and a remote communication module, the detection layer comprises a data server, the data server comprises a detection terminal database, a storage module and a laboratory-based C / S detection management software module; the supervision layer comprises a remote supervision computer and a supervision server, the remote supervision computer comprises a network browser; and the supervision server comprises a monitoring terminal database, a B / S supervision module and a supervision pre-alarm module. The material detection and remote monitoring system can automatically control the material test, have accuracy and reliability and realize the effective supervision.

The invention discloses a multi-feature fusion in-car antitheft and anti-mistaken-locking alarm system and a working method thereof. The system comprises detection devices in a car, a central control system, a camera and a user mobile phone, wherein the detection devices comprise a temperature detection device, an oxygen concentration detection device, a sound control device and a vibration sensing device, which can respectively detect temperature, oxygen, sound and vibration information; each detection device transmits detection information to the central control system through wireless signals; the user mobile phone communicates with the central control system through GSM (Global System for Mobile Communications) / CDMA (Code Division Multiple Access) signals to obtain the internal information of the car and the car is remotely controlled through the central control system. By integrally fusing the antitheft alarm and the real-time detection of the internal environment of the car, the internal situation of the car can be monitored in real time, the user can realize the remote control of the car, the car is effectively prevented from being mistakenly locked and thus incidents such as injuries and death caused by a reason that vulnerable groups are locked in the car are greatly reduced.

The invention discloses a transformer substation acoustic signal feature extraction method based on MFCC, and belongs to the field of monitoring. The method comprises the following steps: performing acoustic signal preprocessing, fast Fourier transform, Mel filter bank and logarithm DCT operation on a transformer acoustic signal in sequence, and extracting the characteristic quantity of the transformer acoustic signal; wherein the preprocessing comprises two steps of framing and windowing; converting the time domain signal into a frequency domain through fast Fourier transform, and calculatingan amplitude spectrum and spectral line energy of each frame; enabling the Mel filter bank to calculate energy for each frame of spectral line energy spectrum through the filter bank; carrying out logarithm DCT operation to obtain logarithms of the energy values, calculating an energy matrix and identifying the fault type in a fuzzy clustering or neural network mode. Distinguishing is carried outthrough timbre, extracted feature vectors have obvious difference, the operation speed is high, and the operation cost of a computer can be reduced; and the feature vectors are classified and markedby using a support vector machine algorithm, so that discrimination speed is high, accuracy is high and instruction is simple. The method can be widely applied to the field of operation monitoring andfault judgment of unattended substations.