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33results about How to "Realize self-identification" patented technology

Online evaluation method for capacity of power distribution transformer

The invention provides an online evaluation method for the capacity of a power distribution transformer. The method comprises a step of using a correlation coefficient method to realize the automaticidentification of a power distribution transformer connection group, a step of calculating Dyn11 distribution transformer short-circuit impedance and Yyn0 distribution transformer zero-sequence impedance and comparing the impedances with a standard reference value, and a step of finally obtaining a power distribution transformer evaluation capacity. According to the operating voltage data of the power distribution transformer, a correlation coefficient method is applied to realize the self-identification of the power distribution transformer connection group. Under the condition that the primary side electric quantity of the power distribution transformer cannot be obtained, the rated capacity of the power distribution transformer can be accurately evaluated by a Dyn11 distribution transformer capacity online evaluation method. Under the condition that a neutral point of a Yyn0 distribution transformer is offset, the rated capacity of the power distribution transformer can be accurately evaluated by a Yyn0 distribution transformer capacity online evaluation method.
Owner:STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1

Automatic simulated dummy projectile launching system

The invention provides an automatic simulated dummy projectile launching system. The problems that in the conventional simulation actual combat training process, the blast effect of blasting ammunition in the close combat is difficultly simulated in a vivid manner, and the death cannot be avoided are solved, and the problem that the non-gunpowder means is adopted to motivate a fuse so that the simulated dummy projectile is launched is solved; according to the technical scheme, the automatic simulated dummy projectile launching system comprises a canister launcher, a canister launcher control device and the simulated dummy projectile used for being loaded in the canister launcher; the simulated dummy projectile comprises a bomb body shell, a bomb core and a fuse structure at the bottom of a projectile body; the side wall of a canister launcher air cylinder is provided with an air guide hole used for communicating an air cylinder inner cavity with a canister launcher inner cavity, the lower portion of the air cylinder is connected with a high-pressure air storage tank through an air guide pipe and a normally-closed electromagnetic valve, through automatic identification of a target, cooperative control over launching of the percussion fuse is achieved, the projectile body is launched, exploding is simulated, in the launching process, the dangerous hidden dangers brought by gunpowder launching are completely avoided, operation is easy, and the system is safe, reliable, simple in structure and suitable for civil production manufacturing.
Owner:SHENYANG DANGLANG TECH DEV CO LTD

Distribution transformer tap position identification algorithm

A distribution transformer tap position identification algorithm utilizes the topological relationship of the distribution transformer connected with the same 10kV line to determine the precursor-successor relationship between adjacent distribution transformers. The voltage difference between adjacent distribution transformers at different tap positions is analyzed, and the voltage drop produced by line impedance is regarded as noise, so the voltage difference between adjacent distribution transformers is different if the voltage between adjacent stations is not in the same tap position, and then the tap position relationship of adjacent distribution transformers can be determined. The voltage tap positions of all stations are analyzed by comparing the voltages of two stations adjacent toeach other. The algorithm of the invention does not require the operation and maintenance personnel in the platform area to check the actual tap position of the distribution transformer, but utilizesthe existing operation data of the distribution transformer to realize on-line calculation of the tap posiiton of the distribution transformer and provide the reliability of the power supply in the platform area. The algorithm of the invention can accurately determine the actual tap position of the distribution transformer, and is suitable for large-scale application and popularization.
Owner:STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1

Method adopting robot for automatic recognition and additive forming of uneven surface

The invention discloses a method adopting robot for automatic recognition and additive forming of an uneven surface. The method comprises the following steps: two CCD cameras opposite in position areinstalled at the tail end of the robot, the surface of a workpiece is observed in a larger range, images are collected, defects on the surface of the workpiece are recognized and guided based on a binocular vision principle, and three-dimensional information of the defects is acquired; a controller reconstructs the three-dimensional outline of the defects, additive parameters are determined, an additive gun at the tail end of the robot is driven to reach defect positions for additive filling and repairing; after additive filling and repairing, the two CCD cameras at the tail end of the robot are driven to acquire images of the defects again; the controller reconstructs the three-dimensional contour of the defects again to determine whether the workpiece after additive filling and repairingmeets the standard, and the defects are subjected to additive filling and repairing again if the workpiece fails to meet the standard until the workpiece meets the standard. The robot has the advantages of simple structure, stable operation, high reliability and high adaptability, and can recognize the defects on the surface of the workpiece automatically and complete additive filling and repairing of the defects.
Owner:NANJING UNIV OF SCI & TECH

Multi-student individual segmentation and state autonomous identification method based on deep learning

The invention provides a multi-student individual segmentation and state autonomous recognition method based on deep learning, and the method comprises the steps: collecting a normal class video, carrying out the framing, and obtaining continuous frame images of a class video; segmenting out students' individuals and non-students' individuals, and marking the non-students' individuals as masks ofdifferent colors; finding a human eye feature point of each student individual through a human face feature point positioning method, calculating a human eye closure feature value of each student individual, and judging whether each student individual is in a lecture attending state at present or not; judging whether faces are detected by all the student individuals or not, and judging the class attending state grades of the student individuals; and designing the student lecture attending efficiency evaluation method in the whole class period according to whether each student is in a lecture attending state or not and whether each student is in a non-head-up state or not. The invention provides a solution for realizing the autonomous identification of the student lecture attending state and the judgment of the lecture attending efficiency, and has the advantages of high speed, high identification rate and strong environmental adaptability.
Owner:NANING HANTAO TECH +2

Hemispherical harmonic oscillator parameter identification method

The invention relates to a hemispherical harmonic oscillator parameter identification method. The method comprises the steps of self-excitation angular velocity application, gyroscope internal control force signal output, gyroscope error evolution model and harmonic oscillator parameter inverse solution identification model construction, single-axis forward and reverse rotation self-calibration and the like. A set of rate HRG control system simulation model with a self-excitation control module is constructed, and self-excitation angular velocity application, gyroscope error self-calibration and harmonic oscillator parameter autonomous identification under two inverse solution models can be completed. According to the method, the harmonic oscillator non-equal damping error amplitude and the main shaft deflection angle can be rapidly and autonomously identified by utilizing self-excitation in any stage of a full life cycle in a gyroscope working environment, and the method is a new method for rapidly and autonomously identifying the harmonic oscillator non-equal damping error amplitude and the main shaft deflection angle by utilizing various methods and means, such as self-excitation-based rate/rate integral HRG self-compensation (force compensation), non-equal damping error suppression and resonance mode drift error reduction. The output angular velocity/angular increment precision of the gyroscope is improved, application conditions are created, and a solution is provided.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Transformer area intelligent fusion terminal and low-voltage monitoring terminal plug-and-play access method

PendingCN114124696AImplement self-describingImplement self-registrationDesign optimisation/simulationTransmissionAccess methodTransformer
The invention provides a transformer area intelligent fusion terminal and a plug-and-play access method of a low-voltage monitoring terminal, and the plug-and-play access method of the transformer area intelligent fusion terminal accessing a cloud platform comprises the following steps: the transformer area intelligent fusion terminal carries out registration confirmation on the cloud platform; a plug-and-play process is started; the cloud platform issues a preset primary equipment description file to the transformer area intelligent fusion terminal; the transformer area intelligent fusion terminal analyzes the primary equipment description file, generates an ICD file after model instantiation, and uploads the ICD file to the cloud platform; the cloud platform analyzes the ICD file and issues a corresponding CID model file; and the transformer area intelligent fusion terminal analyzes the CID model file and then performs communication and data interaction with the cloud platform. According to the method, the defects of debugging, point table configuration, software upgrading and the like when the existing transformer area intelligent fusion terminal and the low-voltage monitoring terminal are accessed to the cloud platform are overcome, the workload of field installation and maintenance is greatly reduced, and the access level of the intelligent terminal is powerfully improved.
Owner:STATE GRID HUBEI ELECTRIC POWER RES INST +1

Power grid monitoring alarm event identification method, terminal device, equipment and medium

The invention discloses a power grid monitoring alarm event identification method and device, terminal equipment and a medium. The method comprises the following steps: acquiring alarm information ofpower grid monitoring; preliminarily identifying an alarm event according to the alarm information to form preliminary identification data; preprocessing the alarm information and the preliminary identification data to form a training sample set, wherein the training sample set comprises a plurality of defined events; training the convolutional neural network model by adopting the training sampleset to form a power grid monitoring alarm event recognition model; and identifying the monitoring alarm event by adopting the power grid monitoring alarm event identification model. The efficiency andthe accuracy of identifying the power grid monitoring alarm information as the alarm event are improved; therefore, the screen monitoring capability of power grid monitoring service personnel is effectively reduced, the working efficiency of daily monitoring and accident exception handling of the service personnel is improved, and the power grid monitoring alarm information platform is enabled tobetter adapt to the development trend that the quantity of equipment fault alarm information of a power grid is increased geometrically.
Owner:JIANGSU ELECTRIC POWER CO +2

Malicious resource transfer webpage identification method and device

The embodiment of the invention discloses a malicious resource transfer webpage identification method and device, and belongs to the field of network security. The method comprises the steps of obtaining a webpage currently accessed by a terminal; identifying whether the webpage is a resource transfer webpage, wherein the resource transfer webpage is used for online resource transfer; if the webpage is the resource transfer webpage, obtaining a malicious webpage access record of the terminal, wherein the malicious webpage access record comprises an access record corresponding to at least one malicious webpage; and if the resource transfer webpage is associated with the malicious webpage contained in the malicious webpage access record, determining the resource transfer webpage as the malicious resource transfer webpage. On the basis of the association relationship between the resource transfer webpage and the malicious webpage, self-identification of the malicious resource transfer webpage is realized, and manual report audit is not needed, so that the identification efficiency of malicious resource transfer is improved; meanwhile, the webpage accessed by each terminal can be identified in real time, and the timeliness and coverage rate of malicious resource transfer identification are improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD

An online evaluation method for distribution transformer capacity

ActiveCN108303606BRealization of capacity online assessmentRealize self-identificationElectrical testingDistribution transformerEngineering
The invention provides an online evaluation method for the capacity of a power distribution transformer. The method comprises a step of using a correlation coefficient method to realize the automaticidentification of a power distribution transformer connection group, a step of calculating Dyn11 distribution transformer short-circuit impedance and Yyn0 distribution transformer zero-sequence impedance and comparing the impedances with a standard reference value, and a step of finally obtaining a power distribution transformer evaluation capacity. According to the operating voltage data of the power distribution transformer, a correlation coefficient method is applied to realize the self-identification of the power distribution transformer connection group. Under the condition that the primary side electric quantity of the power distribution transformer cannot be obtained, the rated capacity of the power distribution transformer can be accurately evaluated by a Dyn11 distribution transformer capacity online evaluation method. Under the condition that a neutral point of a Yyn0 distribution transformer is offset, the rated capacity of the power distribution transformer can be accurately evaluated by a Yyn0 distribution transformer capacity online evaluation method.
Owner:STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1

Method and device for determining charging environment, battery management system and charging and swapping station

The present application relates to a method and device for determining a charging environment, a battery management system, and a charging and swapping station. The method includes: if a connection success signal output by a battery connection confirmation module is detected, obtaining the current voltage value output by a battery voltage detection module; Obtain the corresponding relationship between the voltage value environment; the corresponding relationship between the voltage value environment includes multiple environments, multiple voltage values, and the one-to-one correspondence between multiple environments and multiple voltage values; multiple environments include internal environments and external environments; multiple The voltage value is determined according to multiple power supply devices; the resistance value of the pull-down resistor of each power supply device in the multiple power supply devices is different from each other; the environment corresponding to the current voltage value is determined from the voltage value environment correspondence, and the environment is determined as Battery charging environment. In this way, the self-identification of the charging environment of the battery system can be realized, and the charging can be responded quickly, so that the charging time can be shortened.
Owner:ZHEJIANG JIZHI NEW ENERGY AUTOMOBILE TECH CO LTD +1

An Algorithm for Phase Sequence Recognition of Distribution Transformers

A phase sequence identification algorithm of a distribution transformer comprises the steps of pre-processing data, calculating voltage of a distribution unit-area after three-phase calibration, taking ten groups of data, sequencing voltages of the distribution unit-area at each moment after three-phase calibration, comparing three-phase voltage of each distribution unit-area with circuit voltage,and finally determining a phase sequence condition of the distribution unit-area. The three-phase voltages of a 10kV circuit are sequenced in a descending order according to the characteristic that avoltage of a high-voltage side of the 10kV circuit and three-phase line voltage of the distribution transformer are not completely equal, the three-phase voltages of the distribution unit-area of thesame line at each moment are sequenced in the descending order, and the phase sequence condition of all distribution unit-areas of the same circuit is solved under the condition that the phase sequence of the 10kV circuit is correct. The example shows that the phase sequence condition of the distribution transformer can be accurately determined by the method, and the method is suitable for application and promotion on a large scale.
Owner:NANCHANG KECHEN ELECTRIC POWER TEST & RES CO LTD +2

Server intelligent identification and inspection system

The invention provides a server intelligent identification and inspection system, which belongs to the technical field of server intelligent identification, and is used for solving the technical problems that the asset reporting workload of the existing machine room service is large and the daily inspection efficiency is low. A machine room manager uploads recorded videos or picture data to the system, models of servers in images are recognized through a model detection algorithm, and the position of each server in the machine cabinet is calculated through a position calculation method; an indicator light area of the server in the picture is detected, color information of an indicator light of the server is determined, the current state of the server is discovered, and an inspection log is formed; the server model and position identification result corresponds to the inspection result, a complete machine room equipment statistical table is formed and updated in time, and if a fault occurs, a maintainer is notified in time to maintain. The system replaces manual inspection, reduces the workload of inspection and maintenance personnel, achieves the purpose of intelligent inspection, and greatly improves the inspection efficiency and quality.
Owner:甘肃紫光智能交通与控制技术有限公司

Charging environment determination method and device, battery management system and battery charging and replacing station

The invention relates to a charging environment determination method and device, a battery management system and a battery charging and replacing station. The method comprises the steps: obtaining a current voltage value outputted by a voltage detection module of a battery if a connection success signal output by a connection confirmation module of the battery is detected; obtaining a voltage value environment corresponding relation, wherein the voltage value environment corresponding relation includes a plurality of environments, a plurality of voltage values and one-to-one correspondence between the plurality of environments and the plurality of voltage values; the plurality of environments include an internal environment and an external environment; the plurality of voltage values are determined according to the plurality of power supply devices; resistance values of pull-down resistors of the plurality of power supply devices are different from each other; and determining an environment corresponding to the current voltage value from the voltage value environment corresponding relation, and determining the environment as a charging environment of the battery. Thus, self-identification of the charging environment of the battery system can be realized, charging can be quickly responded, and charging time can be shortened.
Owner:ZHEJIANG JIZHI NEW ENERGY AUTOMOBILE TECH CO LTD +1

A Distribution Transformer Gear Recognition Algorithm

A distribution transformer gear recognition algorithm, the algorithm uses the distribution transformer topological relationship connected to the same 10kV line to determine the predecessor and successor relationship between adjacent distribution transformers; analyze the different gear voltages of adjacent distribution transformers Difference, if the voltage drop generated by the line impedance is regarded as noise, the voltage of the adjacent station area is not in the same gear, which will cause a different voltage difference, and then determine the gear relationship of the adjacent distribution transformer; through the adjacent station area Comparing the voltages of the two stations, and completing the analysis of the voltage levels of all stations. The algorithm of the present invention does not require the operation and maintenance personnel of the station area to check the actual gear position of the distribution transformer, but uses the existing operating data of the distribution transformer to realize online calculation of the gear position of the distribution transformer, thereby providing the power supply reliability of the station area. The algorithm of the invention can accurately determine the actual gear position of the distribution transformer, and is suitable for large-scale application and popularization.
Owner:STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1

Visual enhancement method and system, computer storage medium and intelligent glasses

The invention discloses a vision enhancement method and system, a computer storage medium and intelligent glasses, a picture in front of the eyes of a user is shot through a light field camera and displayed on a display screen for the user to watch, then the position of the fixation point of the eyeballs of the user on the display picture of the display screen is tracked, and then the display picture is zoomed, the focus position of the display picture is always consistent with the position of the fixation point on the display picture so that the content concerned by the eyes of the user is always presented in front of the eyes of the user in a clearest manner, and the vision of the content concerned by the eyes of the user in the brain of the user is enhanced. Meanwhile, the outline of the object where the fixation point is located in the display picture is detected, and image enhancement is performed on the object in the display picture according to the outline of the object, so that the vision of the content concerned by the eyes of the user in the brain of the user is further enhanced. The visual perception ability of the visual impairment patient can be compensated, and the visual impairment patient can be helped to autonomously recognize the content watched by the visual impairment patient.
Owner:海南南岛眼镜有限公司
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