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32results about How to "Judgment impact" patented technology

Pathological image processing method, system and apparatus, and storage medium

The invention discloses a pathological image processing method, system and apparatus, and a storage medium. According to multiple staining slices and type judging algorithm of pathological image to realize automatic judging the type of pathological image, As that technical problem that a large amount of time and energy are required to analyze the pathological image through manual observation, theefficiency is very low and individual discrimination differences exist in the prior art are overcome, the efficiency of processing and judging the pathological image is effectively improved, and the judgement result is stable and reliable; In addition, in order to avoid the influence of image color differences caused by different staining methods, tissue slices at different times, different hospitals or different regions, the pathological images were normalized to ensure the veracity of pathological image type judgement.
Owner:清影医疗科技(深圳)有限公司

Vehicle-mounted radioactivity detecting system

InactiveCN102967876AJudgment impactAchieving directional measurementsNeutron radiation measurementDoses rateNuclear engineering
The invention belongs to the technical field of radioactivity detection and discloses a vehicle-mounted radioactivity detecting system. The system comprises a carrying device, a neutron detector, a GPS (Global Positioning System), a gamma ray detector, a power and a computer, and is characterized by also comprising a dose rate meter and a portable gamma spectrometer. The system has the advantages of detecting all directions at 360 degrees in a mobile state, directionally detecting in a stationary state, measuring the dose rate simultaneously detecting neutrons and gamma rays.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY

Intelligent container recycling self-service terminal based on Internet of Things mode and recycling method

ActiveCN106097574AOmit the step of manual classificationReduce work intensityReturnable containers actuationRecovery methodThe Internet
The invention provides an intelligent container recycling self-service terminal based on the Internet of Things mode and a recycling method. The self-service terminal comprises a recycling machine shell, the recycling machine shell is provided with a throwing opening, and the throwing opening is provided with a cabin door in linkage with a cabin door driving mechanism. A first detection sensor is installed at the throwing opening. A conveying belt, container recognition equipment, compression equipment, classification equipment and a plurality of storage containers are installed in the recycling machine shell. The self-service terminal and the recycling method have the advantages that the containers are automatically classified according to the nature of the containers, the step of manual classification needed in a traditional recycling terminal is omitted, and the work intensity of workers is lowered; 2, whether containers are within the recycling range or not can be compressively and accurately judged, it is physically avoided that a user adopts fraudulent means like 'fishing' to influence judgment of equipment on the containers, and the practicability of the self-service terminal is improved.
Owner:北京盈创高科新技术发展有限公司

Track background plate based ore color sorter

The invention discloses a track background plate based ore color sorter which comprises an image acquisition lens, a good product discharge hole and a feed hopper; a chute is formed in the lower sideof the feed hopper; the right side of the chute is provided with a track protective cover; cleaning nozzles are arranged under the track protective cover; a water storage device is arranged on the right upper sides of the cleaning nozzles; and a guide pipe is connected between the water storage device and each cleaning nozzle. For the track background plate based ore color sorter, the structure isscientific and reasonable, and the use is safe and convenient; and the nozzles used for cleaning is arranged on a conveying track, so that the track can be properly cleaned; a vibration motor is arranged on the inner wall of the track, and a strong brush for removing dust is arranged on the inner side of the track, so that the dust on the track can be effectively removed; and an arranged anti-collision plate can prevent a material blown by mistake from falling onto related identification equipment, so that influence on judgment of an identification system is avoided, and stable and continuousrunning of a sorting machine can be realized.
Owner:HEFEI MINGDE PHOTOELECTRIC TECH LTD

Method for reminding about sufficient detergent and washing machine

The invention relates to the technical field of washing machines, in particular to a method for reminding about sufficient detergent and a washing machine applying the method. The method comprises thesteps that by using an intelligent label, corresponding garment parameters are transmitted to the washing machine, the washing machine allocates the total amount of required detergent according to the transmitted corresponding garment parameters, the remaining amount of detergent in a detergent box is acquired and compared with a theoretical value of the total amount of required detergent, and ifthe remaining amount of detergent is lower than the theoretical value of the total amount of detergent required by to-be-washed garments, reminding is conducted. According to the method, by comparingthe remaining amount of detergent in the detergent box with the theoretical value of the total amount of required detergent, whether or not the remaining amount of detergent in the detergent box canmeet current garment washing requirements can be known, and according to the method, the remaining amount of detergent and the influence of the remaining amount of existing detergent on the garments can be accurately judged.
Owner:QINGDAO JIAONAN HAIER WASHING MACHINE +1

Multifunctional stethoscope

The invention discloses a multifunctional stethoscope. The multifunctional stethoscope comprises an auscultation head part, a Y-shaped elastic support, ear plugs and a device box. The auscultation head part comprises an auscultation head, a handheld part and a disinfection box. The ear plugs comprise outer ear plug bodies and inner ear plug bodies. The auscultation head is arranged at the lower end of the handheld part, conical auscultation tubes are arranged in the auscultation head, and the disinfection box is arranged at the upper end of the handheld part. Height adjusting rods are arrangedon two branches of the Y shape, a width adjusting rod is arranged between the two branches, the two outer ear plug bodies are arranged on the two height adjusting rods respectively, the inner ear plug bodies are arranged in the outer ear plug bodies, and the device box is connected with the Y-shaped elastic support and a tube connector through elastic rubber tubes respectively. The multifunctional stethoscope is simple in structure and has comprehensive functions, work of medical staff is greatly convenient, and meanwhile the accuracy of the auscultation result is improved.
Owner:王玲

Automatic rain and snow protective cover used for handlebar and saddle of sharing bicycle

An automatic rain and snow protective cover used for a handlebar and a saddle of a sharing bicycle comprises a rain and snow sensing system, a mechanical operation system, a protective cover system, apower system, a guaranteeing system, a controller and a support. The automatic rain and snow protective cover used for the handlebar and the saddle can accurately judge rainy and snowy weather in time and can automatically protect the handlebar and the saddle of the sharing bicycle on rainy and snowy days. The automatic rain and snow protective cover used for the handlebar and the saddle can effectively solve the problem that rain and snow remain on the surfaces of the handlebar and the saddle of the sharing bicycle after the rainy and snowy days, the surfaces of the handlebar and the saddleof the sharing bicycle are prevented from being stained by muddy water generated by rain and snow, normal use of the sharing bicycle is achieved, development of a green travel habit is further facilitated, and environment protection is facilitated.
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY

Work efficiency assessment method and device and storage medium

The invention discloses a method and equipment for evaluating working efficiency and a storage medium, and the method comprises the following steps: obtaining card punching record information sent bycard punching equipment, so as to obtain the working duration of each user and a corresponding working date according to the card punching record; Calculating the working duration of each user by using a preset algorithm to obtain an evaluation parameter corresponding to each user, and judging whether each working date corresponding to each user is a working day or not; If the working date is a working day, obtaining corresponding quantized data according to the evaluation parameters; If the working date is not the working date, obtaining quantized data according to the evaluation parameters and the working duration corresponding to the current working date; And generating a corresponding evaluation result according to the quantized data. According to the method, the working efficiency ofthe team members is accurately evaluated, so that the reliability of an evaluation result is improved.
Owner:SHENZHEN COOCAA NETWORK TECH CO LTD

Intelligent Internet of Things management and control system based on big data

The invention belongs to the technical field of intelligent management and control, and particularly relates to an intelligent Internet of Things management and control system based on big data. The intelligent Internet of Things management and control system comprises a server side, a management module and monitoring modules, wherein the server side comprises an analysis unit and a storage unit;each monitoring module comprises a detection unit and an Internet of Things unit; the server side can be connected with the management module and the monitoring modules through a communication unit and exchange data; and the plurality of monitoring modules are arranged in the system and are all mounted on a municipal water supply pipeline. According to the system, the leakage degree of a water supply pipe network can be effectively controlled and reduced for a long time, meanwhile, the leakage position can be found and detected in time when leakage occurs, the maintenance time is shortened, and the management and control effect and the management and control efficiency of the water supply pipe network are improved.
Owner:吴双

Container truck body measuring method and container truck body measuring system

The invention discloses a container truck body measuring method, which comprises the following steps: 1) when a container body of a container truck body enters an acquisition region of an image acquisition device, taking a plurality of partial pictures of the external portion of the container body through the image acquisition device based on a preset frequency, and meanwhile, obtaining a plurality of partial X-ray pictures of the inner portion of the container body through an X-ray imaging system based on the preset frequency; 2) obtaining vehicle speed in any time section; 3) combining the plurality of partial pictures to form an external whole picture of the container body; 4) carrying out combining to form an internal whole picture of the container body; and 5)outputting the external whole picture of the step 3) and the internal whole picture of the step 4) and carrying out comparison display. The invention is to provide the container truck body measuring method and the container truck body measuring system, which can effectively obtain the overall picture of the container and enables the container to be accurately matched with objects in the container, and can carry out accurate positioning on the objects in the container.
Owner:GUANGZHOU LINGTE ELECTRONICS

Cleaning simulation method for photovoltaic module

The invention provides a cleaning simulation method for a photovoltaic module, and the method is used for obtaining generating efficiency of the photovoltaic module. The simulation method comprises the steps as follows: measuring generating efficiency eta1 of the photovoltaic module; enabling the photovoltaic module to be detected to contact with brushing hairs of a rolling brush; rotating the rolling brush to clean the photovoltaic module, wherein the rotating speed of the rolling brush is the rotating speed when the rolling brush is in practical work; the rotating time of the rolling brush T equals to t plus n plus y, wherein t represents the one-time cleaning time while the photovoltaic module is cleaned, and n represents the times of cleaning the photovoltaic module every year, and y represents the using years of the photovoltaic module; measuring the generating efficiency eta2 of the photovoltaic module at this time after the rolling brush rotates for t hours. The cleaning simulation method for the photovoltaic module of the invention could simulate the generating efficiency of the photovoltaic module after using the photovoltaic module for some years by rotating the rolling brush for appointed time and judging the influence of rolling brush to the cleaning of the photovoltaic module.
Owner:内蒙古东华新能源运维有限责任公司

User analysis method and device, electronic equipment and storage medium

ActiveCN110399399AAccurate judgment impactJudgment impactData processing applicationsDigital data information retrievalRankingLocal population
The embodiment of the invention provides a user analysis method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining a pre-constructed social network, wherein the social network comprises a plurality of nodes and a plurality of edges; for the two users with the call records, calculating the weights of the edges of the two users according to the total call duration, the call frequency and the average call duration of the two users; determining a first webpage ranking PR value of each user according to the weights of all edges of each user, each first PR value representing the importance degree of one user in the social network; and analyzing the influence of the social network on the society according to the proportion of the floating population, the proportion of the local population, the first PR value of each local population and the first PR value of each floating population in the social network. According to the method, the first PR value of each user is obtained by constructing the social network, and the influence of one social network on the society can be accurately judged in combination with the factors of floating population.
Owner:SHANGHAI DATANG MOBILE COMM EQUIP

Test fixture, resistance test device and method, and conductivity test method

The invention discloses a test fixture, a resistance test device and method, and a conductivity test method. The test fixture comprises a substrate, a pre-clamping mechanism and a clamping mechanism,wherein the pre-clamping mechanism and the clamping mechanism are installed on the substrate. The pre-clamping mechanism comprises at least two pre-clamping pieces, and any pre-clamping piece forms apre-clamping space used for clamping a to-be-tested piece; the clamping mechanism comprises measuring clamping pieces arranged in pairs, and any measuring clamping piece is provided with a clamping space used for clamping the to-be-tested piece. A measuring space is defined by the pair of measuring clamping pieces; the clamping mechanism is provided with at least two pre-clamping pieces arranged on the two sides of the measuring space respectively, and when the pre-clamping pieces clamp the to-be-tested piece, the measuring clamping pieces clamp the measurement state of the to-be-tested piece.The accuracy of length measurement to be measured in the clamping process is improved, the accuracy of conductivity measurement is further improved, and the influence on final finished product judgment is avoided.
Owner:NANTONG HUIFENG ELECTRONICS TECH

Container intelligent recycling self-service terminal and recycling method based on Internet of Things mode

ActiveCN106097574BOmit the step of manual classificationReduce work intensityReturnable containers actuationRecovery methodThe Internet
The invention provides an intelligent container recycling self-service terminal based on the Internet of Things mode and a recycling method. The self-service terminal comprises a recycling machine shell, the recycling machine shell is provided with a throwing opening, and the throwing opening is provided with a cabin door in linkage with a cabin door driving mechanism. A first detection sensor is installed at the throwing opening. A conveying belt, container recognition equipment, compression equipment, classification equipment and a plurality of storage containers are installed in the recycling machine shell. The self-service terminal and the recycling method have the advantages that the containers are automatically classified according to the nature of the containers, the step of manual classification needed in a traditional recycling terminal is omitted, and the work intensity of workers is lowered; 2, whether containers are within the recycling range or not can be compressively and accurately judged, it is physically avoided that a user adopts fraudulent means like 'fishing' to influence judgment of equipment on the containers, and the practicability of the self-service terminal is improved.
Owner:北京盈创高科新技术发展有限公司

Cloud drawing-based large-sized three-dimensional scene multi-person collaborative creation method

The invention discloses a cloud drawing-based large-sized three-dimensional scene multi-person collaborative creation method, which relates to the field of three-dimensional visual scene creation and edition. The method comprises the following two major modules, i.e., a server and a client, wherein the server is an assembly consisting of a plurality of computers; the host in the assembly is divided into a scheduling host and a drawing host; the scheduling host is responsible for solving the problems of synchronization and mutual exclusion produced by editing the same three-dimensional scene by a plurality of users and distributing a drawing task to the drawing host; the drawing host is used for drawing a scene into an image according to visual angles of the users and transmitting to the corresponding client host; and the client host is used for providing an operation interface for three-dimensional scene creation. According to the method, combination of creation results of all the users is creatively and automatically finished at the server, and help can be provided for the users to observe the creation results of all the users in real time during creation; and the method has positive significance to multi-person collaborative creation of a super-large-sized scene.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Method and device for calculating signal-to-noise ratio from oscillogram and checking noise intensity

InactiveCN112131930ASolve the technical problems of denoisingJudgment impactCharacter and pattern recognitionSignal waveImaging processing
The invention discloses a method and device for calculating a signal-to-noise ratio from an oscillogram and checking noise intensity, and the method comprises the steps: denoising an original waveformof a signal obtained by an oscilloscope through calling an image processing module of Python, and calculating the signal-to-noise ratio of a measured signal; with steps of denoising the signal, searching similar areas in an image by taking an image block in a whole signal oscillogram obtained by an oscilloscope as a unit, averaging the areas and removing noises in the image; processing signal-to-noise ratio: comparing the denoised signal oscillogram with an original signal oscillogram obtained by an oscilloscope, and calculating the signal-to-noise ratio so as to judge the influence of noiseon the signal; and processing signal batch: carrying out above two steps of processing on other signals in the signal oscillogram to obtain different PSNR results, and obtaining an average range of asignal-to-noise ratio based on the plurality of PSNR results. The original signal waveform obtained in the oscilloscope can be denoised and then compared with the original signal, the signal-to-noiseratio is calculated, and therefore the noise intensity is judged.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD

Hardware pin jitter test system, method and device

The invention discloses a hardware pin jitter test system, method and device. A pin of hardware is inserted into to-be-inserted equipment through an adapter plate, the circuit on the adapter plate iscontrolled to be connected based on set jitter data so as to simulate the jitter state of the pin, and the hardware state under various jitter data is detected at the same time. The system, the methodand the device are convenient to test, can simulate manual power-on and power-off operation, and quickly detects the impact on hardware from pin jittering.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD

Regional natural disaster threat identification method and system

The invention discloses a regional natural disaster threat identification method and system. The method comprises the following steps: establishing a set; and identifying the natural disaster grade according to the vibration data and / or the wind power data, and judging whether a natural disaster threat exists in the area or not according to the building intensity and / or the resident density and / orthe wind area and / or the number of dangerous objects in the area. The method and the system solve the technical problem of how to identify the threat condition of natural disasters to the area and give an early warning.
Owner:HANGZHOU HOUBO TECH CO LTD

Transformer oil gas simulation sampling device

The invention belongs to the technical field of transformer fault detection, and particularly relates to a transformer oil gas simulation sampling device which comprises a transformer, the transformer is connected with a gas cylinder filled with fault gas, the gas cylinder is used for filling the fault gas into the transformer so as to simulate faults of the transformer, and the transformer is connected with a monitoring box through a first oil inlet pipe, an oil pipe is arranged in the monitoring box, a first oil outlet pipe, a mixer, a layering device, a filter and a second oil outlet pipe are arranged on the oil pipe, the first oil inlet pipe is connected with the oil pipe, the first oil outlet pipe and the mixer are connected with the oil pipe through the same pipeline, and the second oil outlet pipe and the filter are connected with the oil pipe through the same pipeline, the tail end of the mixer is connected with a layering device. According to the transformer oil gas sampling device, the sampling device is integrated and simplified into a monitoring box, during operation demonstration, sampling and detection of transformer oil gas can be completed only by starting the monitoring box, and then teaching is completed for learners or actual workers are assisted in completing sampling and detection tasks.
Owner:STATE GRID SHANDONG ELECTRIC POWER +1

A method and system for remote monitoring of digital broadcast transmitter

The invention discloses a remote monitoring method and system for a digital broadcasting transmitter, related to the technical field of digital broadcasting transmitter monitoring. The remote monitoring method for the digital broadcasting transmitter comprises the following steps: establishing and allocating a failure location ID, a failure information list corresponding to the failure location ID, and a failure solution list corresponding to the failure information list; establishing an association list between the abnormal data and at least one failure location ID, and an association list among each failure location ID; confirming at least one failure location ID associated with the at least one failure location ID based on the location detection data of the at least one failure locationID; finding the failure information and the corresponding failure solution information; and troubleshooting the failure of the digital broadcasting transmitter by means of the failure solution information of a monitoring terminal or the failure solution information transmitted by an external monitoring device. Through the remote monitoring method for the digital broadcasting transmitter, the reliability of the monitoring data is high, and the maintenance and management efficiency is effectively improved.
Owner:HANGZHOU HANGCHUN BROADCAST & TELEVISION EQUIP

Structural cracksoil body seepage test device

ActiveCN112525795AReal-time measurement of small strain stiffnessReal-time measurement of penetration resistanceParticle size analysisPermeability/surface area analysisSoil sciencePore water pressure
The invention discloses a structural crack soil body seepage test device. The device comprises an air pressure servo machine, a water tank and a perforated model box which are sequentially connected through a water conveying pipe; the perforated model box is densely filled with a soil body; a soil pressure gauge, a pore water pressure gauge and a bending element are respectively buried at different heights in the soil body; the top of the soil body is sequentially covered with a filter plate and a pressure transmission plate; a pressure sensor and a pressure servo machine which is used for applying pressure downwards are arranged at the top of the pressure transmission plate; an outlet is formed in the edge of one side face of the perforated model box; transparent tempered glass is arranged on one side face adjacent to the outlet; a camera is correspondingly arranged on the outer side of the transparent tempered glass; a laser particle size analyzer is arranged near the outlet; a step-by-step filtering and weighing device is arranged below the outlet and is matched with the laser particle size analyzer, so that a more accurate lost soil particle size distribution rule is obtained.The device is reasonable in structural design and convenient to use, and can realize a soil body seepage erosion process test at a structural fracture under different hydraulic gradients and upper covering pressures.
Owner:POWERCHINA HUADONG ENG COPORATION LTD

Real-time calibration device for rotation angle of cantilever of bucket wheel machine

The invention discloses a real-time calibration device for the rotation angle of a cantilever of a bucket wheel machine, and belongs to the technical field of bucket wheel stacker reclaimers. The real-time calibration device comprises a bucket wheel machine mounting seat, a rotating seat is mounted on the bucket wheel machine mounting seat, and the cantilever is mounted on the rotating seat; the rotating seat is of a disc-shaped structure, an angle scale is embedded in the side of the upper surface of the bucket wheel machine mounting seat, an angle calibration rod is vertically arranged on the side wall of the rotating seat, a movable rod is arranged at the bottom end of the angle calibration rod in a penetrating mode, a shell cover is horizontally fixed to the bottom end of the movable rod, and a calibration groove is formed in one side of the top wall of the shell cover; a calibration groove is formed in the shell cover, the calibration groove is aligned with the angle ruler, a pair of pressing plates are horizontally arranged in the shell cover side by side and located on the two sides of the calibration groove respectively, and absorbent cotton blocks are arranged on the lower surfaces of the pair of pressing plates. The rotation angle real-time calibration device of the bucket wheel machine cantilever can visually judge whether the rotation angle of the cantilever deviates or not.
Owner:HUANENG POWER INTERNATIONAL +1

Intelligent alarm system and method for preventing pressure damage

PendingCN114569104AImprove the effect of preventionIncreased pressure injurySensorsBlood flow measurementBlood streamPressure injury
The invention relates to the technical field of medical instruments, in particular to a pressure injury prevention intelligent alarm system and method.The system comprises a pressure detection module, the pressure detection module is used for collecting pressure signals of a pressed part of a human body, and the pressure detection module is in signal connection with a central control module; the central control module is in signal connection with an alarm module, and the central control module is used for analyzing whether the pressure signal meets a first preset condition or not; the system further comprises a blood flow detection module, the blood flow detection module is used for collecting a blood flow signal of a pressed part of a human body, and the blood flow detection module is in signal connection with the central control module; when the pressure signal does not meet the first preset condition, the central control module analyzes whether the blood flow signal meets a second preset condition or not, and when the blood flow signal meets the second preset condition, the central control module sends an alarm instruction to the alarm module. The technical problem that in the prior art, the pressure damage prevention effect is poor is solved.
Owner:THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV

Four-way pipe joint with pressure reminding function

The invention belongs to the technical field of fluid pipeline equipment, and particularly relates to a four-way pipe joint with a pressure reminding function. The four-way pipe joint with the pressure reminding function comprises a four-way pipe body, and is characterized in that a four-way pipe joint body is arranged at one end of the four-way pipe body, and butt-joint bolts are arranged on theouter surface of the four-way pipe joint body. A fixing platform is arranged on the outer surface of the upper end of the four-way pipe body, a knocking head is arranged at the upper end of the centerof the fixing platform, and a circular thin copper sheet is arranged at the upper end of the knocking head. A sliding sleeve is arranged between the knocking head and the fixing platform, a sliding rod is arranged on the portion, close to the inner side of the sliding sleeve, of the lower end of the knocking head in a penetrating mode, a buoy is arranged at the lower end of the sliding rod, and agroove is formed in the outer surface of the lower end of the sliding sleeve. According to the four-way pipe joint with the pressure reminding function, the buoy, the circular thin copper sheet and the groove are arranged, a ringing sound can be generated to remind a maintainer when the pressure change is excessively large, the phenomenon that due to the fact that the pressure is excessively high, liquid is sprayed out can be avoided, and the four-way pipe joint with the pressure reminding function can bring the better application prospect.
Owner:ZHEJIANG FANGDUN INSTR VALVE CO LTD

Photovoltaic module cleaning simulation method

The invention provides a cleaning simulation method for a photovoltaic module, and the method is used for obtaining generating efficiency of the photovoltaic module. The simulation method comprises the steps as follows: measuring generating efficiency eta1 of the photovoltaic module; enabling the photovoltaic module to be detected to contact with brushing hairs of a rolling brush; rotating the rolling brush to clean the photovoltaic module, wherein the rotating speed of the rolling brush is the rotating speed when the rolling brush is in practical work; the rotating time of the rolling brush T equals to t plus n plus y, wherein t represents the one-time cleaning time while the photovoltaic module is cleaned, and n represents the times of cleaning the photovoltaic module every year, and y represents the using years of the photovoltaic module; measuring the generating efficiency eta2 of the photovoltaic module at this time after the rolling brush rotates for t hours. The cleaning simulation method for the photovoltaic module of the invention could simulate the generating efficiency of the photovoltaic module after using the photovoltaic module for some years by rotating the rolling brush for appointed time and judging the influence of rolling brush to the cleaning of the photovoltaic module.
Owner:内蒙古东华新能源运维有限责任公司

Transformer substation ungrounded system single-phase grounding online monitoring method based on multi-source data

The invention discloses a transformer substation ungrounded system single-phase grounding online monitoring method based on multi-source data. The transformer substation ungrounded system single-phasegrounding online monitoring method comprises the following steps: S1, data acquisition and processing; S2, zero-sequence voltage threshold crossing; S3, analog quantity channel constant value setting; S4, fault recorder starting; S5, AND gate logic judgment; and S6, ungrounded system grounding alarm triggering. According to the transformer substation ungrounded system single-phase grounding online monitoring method, Ua, Ub and Uc are respectively calculated through a computer monitoring system and a fault recorder, zero-sequence voltage U0 is calculated through an algorithm, when the zero-sequence voltage U0 calculated from two different sources is larger than a setting value, the recorder is started, meanwhile, a recorder starting signal is triggered to a computer monitoring background,the computer monitoring system reports a zero-sequence voltage threshold crossing signal, and the computer monitoring system receives the recorder starting remote signaling signal and the zero-sequence voltage threshold crossing remote signal to carry out AND gate logic so as to remind operation and maintenance personnel to carry out processing in time.
Owner:CHINA SOUTHERN POWER GRID EHV POWER TRANSMISSION COMPANY WUZHOU BUREAU
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