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122 results about "Diagnostic algorithms" patented technology

Motor fault diagnosis algorithm based on multi-sensor fusion

The invention relates to the technical field of motor fault diagnosis, in particular to a motor fault diagnosis algorithm based on multi-sensor fusion, and the algorithm comprises the steps: injecting a step excitation signal into a motor, synchronously collecting the original response waveforms of vibration and current sensors, and calculating the inherent response delay. Establishing a mapping relation library of delay values and current sensor filtering parameters, calling the delay values in real time according to the filtering parameters, performing reverse time offset compensation on a current harmonic signal time sequence, performing time alignment on the two types of data, finally performing cross-domain coupling analysis on the aligned data, extracting vibration pulse peak frequency and current harmonic fluctuation quantity, and determining the vibration pulse peak frequency and the current harmonic fluctuation quantity. Early faults are judged by combining the bearing outer ring fault characteristic frequency band and the load rate dynamic threshold value, graded alarm is generated by tracking characteristics, the problem of fault false judgment and missed judgment caused by sensor data space-time dislocation is solved, and the early fault diagnosis accuracy of the motor is improved.
Owner:SHENZHEN ZHAOXIN MICROELECTRONICS CO LTD

Rolling bearing fault diagnosis algorithm based on improved VMD optimized CNN-GRU neural network

The invention provides a rolling bearing fault diagnosis algorithm based on an improved VMD optimized CNN-GRU neural network. The rolling bearing fault diagnosis algorithm aims at solving the problem that early faults of a rolling bearing are difficult to recognize under complex working conditions. The method comprises the steps of providing an OCSSA algorithm fusing an eagle algorithm and a Cauchy variation strategy, realizing adaptive optimization of VMD parameters, remarkably relieving modal aliasing, and improving signal decomposition precision; according to the method, the CNN-GRU end-to-end deep diagnosis framework is constructed, time-frequency fusion features are automatically extracted, time sequence dependence is modeled, and dependence on artificial features is reduced; the model performance is verified on a CWRU bearing data set, the average recognition accuracy rate reaches 98.67%, compared with a mainstream model, the precision and operation efficiency are obviously improved, and the good generalization ability and engineering application potential are achieved.
Owner:CHANGCHUN INST OF TECH

Remote diagnosis and maintenance guiding system of vehicle battery pack box

The invention belongs to the technical field of battery health detection, and particularly relates to a remote diagnosis and maintenance guiding system for a vehicle battery pack box. The remote diagnosis and maintenance guidance system comprises a data acquisition edge processing module, a multi-mode communication and cache transmission module, a composite fault diagnosis module, a sensor self-calibration and environment compensation module, a cloud big data analysis and model iteration module, a remote maintenance guidance and AR visualization module and a system monitoring module. According to the invention, through multi-mode communication and edge caching, data is ensured not to be lost in an extreme environment; a composite fault is identified through a fusion diagnosis algorithm, and maintenance direction deviation is avoided; according to the invention, a sensor self-calibration and compensation mechanism is provided, false alarms caused by low temperature / high humidity are inhibited, and the accuracy of battery data monitoring is improved.
Owner:HENAN KUQI NEW ENERGY TECH CO LTD

Power dispatching data asset full life cycle management method and system

The invention provides a power dispatching data asset full life cycle management method and system. The method comprises the following steps: firstly, collecting power grid real-time operation basic data, calculating a power grid risk grade by means of a power grid risk assessment model, formulating a matching collection strategy according to the grade, and collecting to obtain initial data assets; recognizing and processing abnormal data through a collaborative quality diagnosis algorithm in combination with the real-time state of the power grid, and screening effective data assets; and inputting into a power dispatching decision algorithm, and fusing risks and constraints to generate a power dispatching scheme. And then comprehensively evaluating the scheme by using the data asset utility index, analyzing and determining contribution data assets with remarkable scheduling contribution, and finally dynamically adjusting acquisition and decision algorithm parameters according to an evaluation result and the contribution data assets. According to the invention, full-process collaborative management and control of power dispatching data assets are realized, and the data utilization rate and the scientificity and reliability of dispatching decision are improved.
Owner:HUBEI RONGHUI INFORMATION TECH CO LTD

State monitoring method of two-way liquid cooling energy storage system

The invention discloses a state monitoring method for a two-way liquid cooling energy storage system, and belongs to the field of energy storage system monitoring. According to the method, the problem that the system state is difficult to accurately monitor in real time in the prior art is solved, the detailed operation state of the system can be mastered in real time through comprehensive data acquisition, the data quality is improved through filtering, denoising and normalization operation in the data processing link, a foundation can be laid for subsequent accurate evaluation, and the system reliability is improved. Potential faults can be found in time through state evaluation and abnormal early warning links, fault positions and reasons are accurately positioned in combination with a fault diagnosis algorithm, the maintenance time is effectively shortened, fault risks are reduced, system operation parameters are automatically adjusted according to evaluation and diagnosis results in an operation optimization link, and the system reliability is improved. And the cooling liquid flow, the temperature and the battery charging and discharging strategy are optimized, so that efficient and safe operation of the two-way liquid cooling energy storage system is guaranteed.
Owner:JIANGSU TONGHE NEW MATERIALS TECHNOLOGY CO LTD

Fire suppression process

The subject matter of the present invention includes a fully automatic, early detection fire suppression method. The fire suppression method implements MEMS technology combined with artificial intelligence (AI) and machine learning (ML). The fire suppression method includes real-time monitoring, fire detection sensors, and diagnostics algorithms. A uniquely integrated application of technologies provides for distinguishing between safe and dangerously destructive fire events and the instantaneous extinguishing of a dangerous fire at its inception.
Owner:FIREGUARDIA LLC

System and method for distinguishing seizures utilizing heart rate and autonomic biomarkers

A system and method for distinguishing the type of seizures in a human patient, such as an epileptic seizure (ES), or a functional or dissociative seizure (FDS). The system and method use a diagnostic analytical platform that gets heart rate variability (HRV) analytical metrics from a ECG and uses an analytical diagnostic algorithm to determine if an ES or FDS has occurred in the patient. The diagnostic analytical platform can create a model for distinguishing that a predetermined type of seizure has occurred from the HRV analytical metrics.
Owner:THE RES FOUNDATION FOR THE STATE UNIV OF NEW YORK

Historical building repairing method and system based on multi-source data fusion and AI diagnosis

The invention discloses a historical building repairing method and system based on multi-source data fusion and AI diagnosis, and belongs to the technical field of historic building repairing. According to the method, the multi-source data of the historical building are integrated, the digital twinborn model of the historical building is constructed, defect identification and state evaluation are performed on the digital twinborn model based on the AI diagnosis algorithm, the repairing scheme of the historical building is generated, the repairing effect is fed back in real time through the digital twinborn model, the multi-source data cover full dimensions, and the repairing efficiency is improved. The model restores details of building components and can simulate structural deformation under the load effect and material attenuation caused by the environment, real-time data mapping enables the model to synchronously reflect the state of a solid building, defect danger coefficients are calculated through multi-parameter fusion, the types and positions of defects such as structural deformation and material degradation can be automatically recognized for generation of differentiated repairing schemes, and the method has the advantages of being high in practicability and easy to popularize. Hidden defects are prevented from being missed in manual detection, risk quantification is achieved by combining defect danger coefficients with weight distribution, and the generated scheme better fits the actual defect condition of historical buildings.
Owner:HARBIN UNIV OF SCI & TECH

Coal mill health monitoring, fault early warning and fault diagnosis method and device

According to the coal mill health monitoring, fault early warning and fault diagnosis method and device, comprehensive monitoring of the running state of the coal mill and early fault early warning are achieved through combination of multi-parameter real-time monitoring and an intelligent diagnosis algorithm, various parameters such as vibration, temperature and pressure are collected, and the coal mill health monitoring, fault early warning and fault diagnosis method and device are obtained through spectral analysis and rule judgment. Various fault types such as oil system faults, bearing faults and grinding piece faults are accurately recognized, targeted processing suggestions are provided, and the operation reliability and maintenance efficiency of the coal mill are remarkably improved.
Owner:SHENHUA GUOHUA NINGDONG POWER GENERATION CO LTD

System and method for laboratory diagnosis and treatment targeting in idiopathic psychosis via psychosis biotypes

A method and system for diagnosing an idiopathic psychosis patient and improving treatment targeting for that patient. Cognitive performance is measured on the patient. Pro- and anti-saccade signals are measured on the patient. Motor inhibition is measured on the patient. EEG signals are measured on the patient. Principal components analysis is applied to the measured signals and scales to determine the most significant features. The patient is evaluating on at least 11 dimensions of neuro-cognitive performance. A trained numerical taxonomy approach is used to classify the patient as belonging to a B-SNP psychosis Biotype and the patient's condition is categorized based on the classified Biotype. The B-SNIP psychosis Biotype is used to implement targeted treatment for an individual patient. The diagnostic algorithm is continuously re-trained using new cases and new laboratory tests to improve precision of B-SNIP psychosis Biotypes diagnosis and the accuracy of selecting treatments for individual patients.
Owner:UNIVERSITY OF GEORGIA RESEARCH FOUNDATION INC +4

Reactor fault diagnosis algorithm based on parameter adaptive optimization

The invention relates to the field of electric reactor fault diagnosis, in particular to an electric reactor mechanical fault diagnosis method based on parameter adaptive optimization, which comprises the following steps: preprocessing vibration signals generated when an electric reactor has a mechanical fault through a wavelet threshold denoising method, extracting vibration signal characteristics through Fourier transform and wavelet packet transform, and calculating the mechanical fault of the electric reactor according to the vibration signal characteristics; according to the method, the high-voltage electric reactor is subjected to fault diagnosis, screening is carried out through a random forest method, fault diagnosis is mainly carried out through a convolutional neural network-Transform hybrid model (CNN-Transform), and accurate diagnosis of the fault of the high-voltage electric reactor is realized by utilizing the local and structured feature extraction capability of the CNN model and the global context and long-distance dependency relationship establishment capability of the Transform model. And an improved dung beetle optimization algorithm (MDBO) is introduced, internal parameters of the hybrid model are dynamically adjusted, parameter adaptive optimization is realized, and the diagnosis accuracy is improved.
Owner:CHINA JILIANG UNIV

Integrated system of high-temperature-resistant bearing seat structure and thermal state monitoring algorithm of induced draft fan

The invention relates to the technical field of induced draft fan bearing seats, and discloses an induced draft fan high-temperature-resistant bearing seat structure and thermal state monitoring algorithm integrated system which comprises a bearing seat body. Four corner areas of the bearing seat body are respectively provided with a fixing hole used for being fixed with a base, and the center of the bearing seat body is provided with a circular bearing mounting hole; according to the induced draft fan high-temperature-resistant bearing seat structure and thermal state monitoring algorithm integrated system, the annular liquid storage cavity structure provides an optimal measurement point for the temperature sensor while actively dissipating heat, high unification of the heat dissipation efficiency and accurate monitoring is achieved, and secondly, through time sequence correlation analysis of temperature and vibration signals, a multi-parameter fusion diagnosis algorithm is used for diagnosing the heat dissipation efficiency of the bearing seat structure and the thermal state monitoring algorithm. In addition, localization processing is combined with the self-adaptive learning function, the anti-interference performance and long-term stability of the system are enhanced, and meanwhile the maintenance process is simplified through remote parameter configuration.
Owner:HEBEI DONG BLOWER CO LTD

Planetary gearbox fault diagnosis algorithm automatic generation system and method based on large language model

The invention relates to a planetary gear box fault diagnosis algorithm automatic generation system and method based on a large language model, and the system comprises a large language model generation module which is used for receiving cue words, selecting a parent planetary gear box fault diagnosis algorithm and architecture component knowledge, and combining the characteristics of a planetary gear box fault diagnosis task, calling a large language model to generate a new planetary gearbox fault diagnosis algorithm code; the dynamic code execution and verification module is used for code execution and verification; the architecture evaluator module is used for performing training and performance evaluation; the intelligent evolutionary strategy module is used for analyzing the training history to obtain an analysis result; the program database module is used for storing and managing populations of planetary gearbox fault diagnosis algorithms and constructing cue words; and the evolutionary control engine is used for coordinating and controlling the working process of each module and controlling the number of iterative evolutionary times to realize evolutionary circulation. Compared with the prior art, the method has the advantages of automatic generation, iterative evolution and the like.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

An out-of-hospital hierarchical diagnosis method based on ibs conditions

The application discloses an out-of-hospital hierarchical diagnosis method based on IBS diseases, and relates to the technical field of medical diagnosis, and comprises the following steps: S1: acquiring multi-dimensional information related to IBS diseases provided by a patient in an out-of-hospital scene; S2: performing standardization preprocessing on the out-of-hospital multi-dimensional information to obtain feature data that can be input into an algorithm model; and S3: inputting the standardization feature data into a preset IBS hierarchical diagnosis algorithm model to output an IBS disease hierarchical diagnosis result of the patient. The out-of-hospital hierarchical diagnosis method based on IBS diseases integrates multi-dimensional out-of-hospital information, eliminates data errors by combining standardization preprocessing, adopts multi-feature screening and model optimization, references the Rome IV diagnostic standard to train the model, simultaneously judges the diagnosis reliability through the confidence, reduces the misdiagnosis and missed diagnosis rate, the model iteration updating mechanism can continuously improve the diagnosis accuracy, and adapts to the change of clinical requirements.
Owner:侯晓华 +2

A t-type three-level converter open-circuit fault diagnosis method with strong robustness

ActiveCN115586463BAc-dc conversionContinuity testingVoltage vectorPropagation of uncertainty
The application discloses a kind of T type three-level converter open-circuit fault diagnosis method with strong robustness, belong to the field of power electronic equipment fault diagnosis, to distinguish different switch similar open-circuit fault characteristics and accurately locate open-circuit fault tube.Considering different modulation strategies and modulation modes, the phase voltage residual is generated through the phase voltage model, so as to extract the fault characteristics of the converter under various open-circuit faults.Analyze the influence of factors such as parameter error, dead time and delay time of the system on the phase voltage vector residual, and the adaptive residual vector amplitude threshold based on uncertainty propagation theory.A hierarchical fault diagnosis scheme is proposed, which can locate the group-level open-circuit fault according to the voltage residual vector amplitude and angle, switch the three-level modulation mode of all phases of the converter to two-level mode, to further identify the specific fault switch from the fault group.A reasonable balance between robustness and speed can be achieved, and the complexity and adaptability of the diagnosis algorithm are fully considered.
Owner:NINGBO LIDOU INTELLIGENT TECH CO LTD

Edge computing-based real-time diagnosis and life prediction method for state of extreme charge

The application provides a real-time diagnosis and life prediction method based on edge computing, and relates to the technical field of extreme charging, which comprises the following steps: collecting electrochemical characteristic data in the process of extreme charging of different types of batteries, extracting electrochemical difference characteristics, and constructing a battery type distinguishing model. Based on the battery type distinguishing model, the influence of dynamic working condition data on battery aging is analyzed to obtain the working condition influence. Based on the current recognition result, the basic health data is calculated by the health diagnosis algorithm, and the current health status is evaluated to obtain the health evaluation data. Based on the health evaluation data, a life prediction model is constructed to predict the current battery life and output the remaining life prediction value. The application improves the accuracy and safety of battery management in the extreme charging scene of electric two-wheeled vehicles, realizes adaptive real-time diagnosis of health status, and considers the influence of working conditions on the remaining life prediction.
Owner:ZHUHAI GONGFENG NEW ENERGY DEV CO LTD

An intelligent network self-healing method and system applied to a smart traffic system

The application relates to the technical field of cloud computing, in particular to an intelligent network self-recovery method and system applied to a smart traffic system, which comprises the following steps: data collection, abnormality detection, fault diagnosis, automatic repair and self-learning optimization; the beneficial effects are that the intelligent network self-recovery method and system applied to the smart traffic system can immediately identify abnormal behaviors in the network and respond quickly through real-time monitoring and a quick abnormality detection mechanism, and the time for fault detection and response is greatly reduced; advanced fault diagnosis algorithms, including deep learning and pattern recognition technology, are used, and the system can accurately diagnose various complex faults, including unknown or novel fault modes.
Owner:SHANDONG LANGCHAO YUNTOU INFORMATION TECH CO LTD

Detection method of driving motor for new energy automobile

The invention relates to a detection method of a driving motor for a new energy automobile in the technical field of detection of the driving motor for the new energy automobile. The detection method comprises the following steps: a dynamic excitation step: applying composite dynamic excitation to a detected driving motor; and a follow-up synchronous acquisition step: under the action of the composite dynamic excitation, controlling a detection execution mechanism to move relative to a shell of the detected driving motor according to a preset track, and synchronously acquiring a vibration signal, an acoustic signal and an electrical signal of the detected driving motor. According to the method, through sequential composite excitation and benefit from high efficiency of follow-up synchronous acquisition and rapid reasoning of a fusion diagnosis algorithm, the whole process from excitation to diagnosis report output can be strictly controlled within 90 seconds, and the problem that traditional subentry detection is low in efficiency is fundamentally solved.
Owner:LUOYANG IND TECHNOLOGY RESEARCH INSTITUTE OF ZHENGZHOU UNIVERSITY

Guide vane connecting rod stress trend diagnosis method based on working condition self-adaption

The invention discloses a working condition self-adaption-based guide vane connecting rod stress trend diagnosis method, and relates to the technical field of intelligent diagnosis of hydroelectric generating sets, and the method comprises the steps: constructing an optical fiber stress monitoring system, setting an optical fiber grating sensor for a guide vane connecting rod, collecting a stress signal in real time, and collecting operation parameters; the method comprises the following steps: collecting multi-working-condition data within one month of normal operation after overhaul of a unit, calculating a correlation matrix between guide vane connecting rod stress and operation parameters, and establishing a stress working condition self-adaptive analysis model; and calculating a maximum value, a minimum value, an average value and a standard deviation of stress based on rolling statistics, determining a normal range of stress fluctuation, inputting real-time acquired data into a diagnosis algorithm, judging a stress deviation trend according to the reference model, outputting an alarm level, and updating the reference model. According to the method, the accuracy and timeliness of anomaly recognition are improved, the pertinence and the performability of maintenance decision making are enhanced, and the operation safety and the service life management effect of the guide vane connecting rod of the hydraulic unit are improved.
Owner:LONGTAN HYDROPOWER DEV

Computer-aided diagnosis system

PendingUS20260253212A1EngineeringComputer-aided
A system for intelligent surveillance of attention and recognition of computer-aided diagnosis system outputs. The system can include an endoscope, a computer-aided diagnostic module, a camera, a memory, and a controller. The endoscope can include an elongated member that can include a distal portion and a process camera attached to the distal portion. The process camera can capture a video stream during a procedure. The computer-aided diagnostic module can be configured to detect an abnormality within the video stream using a diagnostic algorithm and transmit a signal. The controller can be configured to determine a gaze location of the doctor during the procedure using a gaze algorithm, determine whether the doctor looked at the detected abnormality by comparing the signal from the computer-aided diagnostic module and the gaze location of the doctor, and trigger a countermeasure based on determining that the doctor did not look at the detected abnormality.
Owner:GYRUS ACMI INC

Lithium iron phosphate battery fault diagnosis algorithm

The invention discloses a lithium iron phosphate battery fault diagnosis algorithm. The algorithm comprises the following steps: collecting an information source data set of lithium iron phosphate battery faults; a genetic algorithm is adopted to search the information source data set, a search result serves as an initial clustering center to be input into a fuzzy C-means clustering algorithm for means clustering, and the clustering number and distance measurement are determined; the expert weight is calculated by using the distance measurement of the trapezoidal fuzzy number, and the attribute weight is calculated by using a deviation maximization method; calculating positive and negative ideal solutions based on the expert weight; and based on the attribute weights and the positive and negative ideal solutions, calculating group benefits, personal regret values and compromise compromise solutions to obtain a fuzzy fault sequence. According to the method, the genetic algorithm is combined with the FCM, the FCM is prevented from falling into a local minimum value in the iteration process, and finally the search result of the genetic algorithm is used as the initial clustering center of the FCM, so that the fault recognition rate of the algorithm is improved.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY

Finite element intelligent maintenance scheduling system for turbine runner blade

The invention relates to the technical field of water turbine maintenance, and particularly discloses a finite element intelligent maintenance scheduling system for a water turbine runner blade. According to the system, a stress-deformation coupling model of a runner blade is established through finite element numerical simulation, and a dynamic damage evaluation model is established in combination with real-time monitoring data; predicting a crack propagation trend by using an intelligent diagnosis algorithm, and generating a hierarchical maintenance decision; through a resource scheduling optimization module, maintenance personnel, spare parts and equipment resources are matched, a scheduling priority queue based on multi-dimensional constraints is established, and dynamic balance of maintenance tasks and resource allocation is realized. The system can effectively improve the crack detection precision, remarkably shorten the non-planned downtime and optimize the spare part inventory turnover rate, and has outstanding economic benefits and engineering application values.
Owner:HARBIN ELECTRIC MASCH CO LTD

Transformer substation defect scene generation and fusion simulation method and device

The invention discloses a substation defect scene generation and fusion simulation method and device, and relates to the technical field of substations. The method comprises the following steps: acquiring a substation field image, constructing a time-space association scene library, collecting defect images of historical faults of the substation and defect characteristic parameters of the defect images, constructing a defect working condition traceability association library, obtaining a multi-dimensional defect generation constraint condition, and generating a multi-dimensional defect through an artificial intelligence content generation technology. Generating a transformer substation virtual defect image and virtual defect parameters, performing adaptive fusion on the virtual defect image and the space-time association scene library, constructing a transformer substation defect simulation scene, diagnosing the transformer substation defect simulation scene through a defect scene diagnosis algorithm, and generating scene diagnosis data. According to the method, the substation defect scene can be accurately generated and simulated, the problems of single traditional simulation scene and poor environmental adaptability are solved, the defect that virtual defects lack logic constraints is overcome, the fidelity of the simulation scene is improved, and the scene quality is guaranteed.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO LTD RESEARCH INSTITUTE +2

Intelligent bearing state monitoring and self-maintenance device based on multi-sensor fusion

The invention discloses an intelligent bearing state monitoring and self-maintenance device based on multi-sensor fusion, and relates to the technical field of industrial equipment state monitoring and fault diagnosis. Comprising a bearing body, a sensing module, a control module and an execution module, the bearing body comprises a bearing inner ring, a bearing outer ring, a rolling body and a retainer; the sensing module is integrated on the outer side face of a bearing outer ring or the inner wall of a bearing mounting hole of a robot joint shell. The control module is packaged in the oil-resistant miniature sealing shell and fixed to the inner wall of the robot joint shell. And the execution module is integrated in the sealing shell and is communicated with the raceway area of the bearing body through a conveying pipeline. A multi-source diagnosis algorithm fusing time domain kurtosis, frequency domain envelope spectrum characteristics and temperature trend is executed through a microprocessing unit, normal vibration fluctuation caused by sudden load change and real abnormity caused by lubrication failure or material stripping are effectively distinguished, and the problems of high false alarm rate and automatic lubricating oil compensation under complex working conditions are solved.
Owner:GUANGZHOU PANYU POLYTECHNIC

Layered diagnosis method for unmanned mine car

The application discloses a kind of unmanned mine car layered diagnosis method, it is related to unmanned mine car field, comprising: S1, construction fault classification and coding system, fault is classified according to source classification, generates only main fault code and sub fault code;According to fault severity, influence range and recoverability, establish multistage fault evaluation model, give grade to each fault;S2, main fault code, sub fault code, fault grade and corresponding processing strategy are written into configuration file, and the configuration is loaded when mine car starts;S3, real-time acquisition and fusion multi-source data, extract abnormal characteristics;S4, real-time data characteristics are matched with fault library, calculate fault probability, execute corresponding hierarchical control strategy;S5, execute closed-loop feedback optimization, upload the data of fault diagnosis and processing process to cloud, to optimize fault library and diagnostic algorithm model.The realization is to unmanned mine car fault from loop, site to reason Layered accurate positioning.
Owner:安徽海博智能科技有限责任公司 +2

Method and system for monitoring running state of coal-based alcohol-ammonia co-production equipment

The invention relates to the technical field of equipment state monitoring, in particular to a method and system for monitoring the running state of coal-based alcohol-ammonia co-production equipment, and the method comprises the steps: data collection: collecting multi-source data in the running process of the equipment in real time; preprocessing data, eliminating noise interference through weighted average and Kalman filtering algorithms, and constructing an equipment state feature vector; fault diagnosis: performing fault diagnosis on the feature vector based on an exclusive model library; and information pushing: pushing the information to an executor through the mobile terminal. The method breaks through the limitation of a traditional universal or general diagnosis model through a specific exclusive model library, optimizes a diagnosis algorithm for different equipment characteristics, solves the problem of high misdiagnosis rate of a single parameter, has the advantages of reducing non-planned shutdown, prolonging the service life of equipment, reducing the operation and maintenance cost and the like, remarkably improves the fault recognition precision, and improves the fault diagnosis efficiency. And meanwhile, the system can realize real-time monitoring of the equipment state and fault early warning, reduce the manual inspection frequency and reduce the labor intensity.
Owner:XINJIANG INST OF ENG

An automatic diagnosis method for adaptive multi-agent cooperation for explainability

The application discloses an automatic diagnosis algorithm for adaptive multi-agent cooperation for explainability. The application comprises the following steps: firstly, a two-way probability network of symptoms and diseases is constructed based on a data set, and a disease weight is calculated through a pre-diagnosis module to determine whether to enter a Doctor Agent module or a Med-Team Agents module. The Doctor Agent simulates single expert diagnosis, combines a medical knowledge base and the two-way probability network, and judges whether a patient can be definitely diagnosed or continue to ask related symptoms to assist in diagnosis. The Med-Team Agents simulate the consultation of multiple experts, including a Manager Agent and multiple Disease Agents, which respectively represent a chief physician and multiple disease experts. The Manager Agent dynamically manages multiple Disease Agents, selects appropriate experts according to the symptom information of the patient to generate related symptoms, and finally completes diagnosis. The application is suitable for medical automatic diagnosis tasks, combines multi-agent cooperation with two-way probability network prompts, improves the explainability of diagnosis, and realizes efficient inquiry and accurate diagnosis.
Owner:EAST CHINA UNIV OF SCI & TECH

A fuel cell rapid fault diagnosis method and device

The present application relates to a kind of fuel cell quick fault diagnosis method and device, belong to fuel cell field.Therein, the method includes executing fuel cell initialization protocol and reading fuel cell operating characteristic parameter;Based on fuel cell operating characteristic parameter, construct fault feature identification system, fault feature identification system is used for thermodynamic boundary anomaly detection, air filter blockage fault feature identification, valve leakage diagnosis and air compressor performance attenuation diagnosis, wherein valve leakage diagnosis fusion temperature difference self-adaptive correction protocol, temperature difference self-adaptive correction protocol is triggered by compensating inlet medium flux.This application realizes through integrated monitoring system and intelligent diagnosis algorithm, realizes the quick, accurate judgment to the cause of failure, to improve the reliability and maintenance efficiency of fuel cell system.
Owner:SHANGHAI WENJING ENERGY TECH CO LTD

Permanent magnet motor interphase short circuit fault diagnosis method

The invention relates to the technical field of permanent magnet motor fault diagnosis, in particular to a permanent magnet motor phase-to-phase short circuit fault diagnosis method. In order to solve the defects in the prior art, the invention provides a novel permanent magnet motor phase-to-phase short circuit fault diagnosis method, which comprises the following steps of: 1) acquiring corresponding vibration effective values Kn of a normal motor at different rotating speeds fn; and 2) phase short diagnosis: if the instantaneous value of the motor stator current is over-current and the three-phase current is unbalanced, acquiring fn and K, and performing phase short judgment by comparing K with 5 * Kn and a frequency spectrum. According to the inter-phase short-circuit fault diagnosis method for the permanent magnet motor, the time consumption of the whole calculation process on an embedded system is at the ms level, the diagnosis algorithm has timeliness, the diagnosis method is effective, and meanwhile online fault diagnosis can be achieved.
Owner:CRRC YONGJI ELECTRIC CO LTD

Green building energy consumption intelligent monitoring and diagnosis system based on multi-source data fusion

This invention discloses a green building energy consumption intelligent monitoring and diagnosis system based on multi-source data fusion, belonging to the field of building energy management technology. It employs an improved Transformer-LSTM model and dynamic window alignment technology to solve the problems of time synchronization and missing values ​​in heterogeneous data, thus improving the input quality of the diagnostic algorithm. Through device-level energy consumption decomposition and multimodal root cause localization, it improves the accuracy of anomaly diagnosis and can accurately locate faulty equipment. Policy generation based on GNN behavior perception and PPO reinforcement learning reduces overall energy consumption while ensuring comfort. The system has data closed-loop management capabilities, achieving continuous self-learning through reverse annotation of diagnostic results and dynamic threshold optimization. Three-dimensional visualization and an interactive interface significantly improve operation and maintenance efficiency. This system significantly enhances the accuracy, automation level, and economic benefits of building energy consumption management.
Owner:SHENZHEN ON XI GREEN ENERGY TECH