34 results about "Electrical Failure" patented technology

The invention discloses an electrical fault positioning system and method for an electric anastomat, and belongs to the technical field of medical equipment fault detection.The electrical, thermal and mechanical operation data of equipment are comprehensively collected through a multi-modal sensing subsystem, and real-time feature extraction and AI reasoning are conducted through an edge calculation unit; according to the method, a deep learning model is adopted to carry out preliminary fault classification, a strategy of combining a confidence coefficient mechanism and digital twinborn simulation verification is introduced, and multi-physics field coupling simulation and root cause analysis are carried out on a low confidence coefficient result, so that accurate positioning of faults is realized. According to the method, physical simulation and data-driven intelligence are fused, the problems that complex fault diagnosis is high in uncertainty and difficult to position are effectively solved, the accuracy, reliability and operation and maintenance efficiency of fault diagnosis of the electric anastomat are remarkably improved, and predictive maintenance capacity is achieved.

A test stand for confronting a test piece with a simulated electrical fault. The test stand includes a central fault control unit for orchestrating the simulated electrical fault, and at least one local node configured as a failure insertion unit (FIU), with a switch arrangement for falsifying selected electrical currents in the test stand. The fault control unit is configured to create an abstract fault description, which specifies at least one electrical fault to be applied to an electrical line, and to transmit it to the local node. The local node is configured to derive from the abstract fault description an activation rule for the switch arrangement that is suitable for applying the electrical fault to the electrical line, and to apply the electrical fault to the electrical line by activating the switch arrangement according to the activation rule.

This application provides an IC package electrical failure analysis sample, preparation method, and testing method. The method includes sequentially wrapping a first material layer and a second material layer on the outside of the IC package to form an inlay; grinding the inlay from the back of the IC package until the back of the bare die and the packaging wires within the molding compound are exposed; removing the remaining first and second material layers on the outside of the IC package; and electrically connecting the packaging wires within the molding compound through multiple conductive pads, wherein each conductive pad connects several packaging wires of the same electrical property. This application does not damage the pads on the bare die, thereby helping to ensure the accuracy of subsequent electrical failure analysis results.

The invention discloses a knowledge graph construction method and system based on electrical fault disaster, and belongs to the technical field of electrical fire early warning and intelligent security and protection. The method comprises the following steps: constructing an electrical fault disaster-causing multi-source data acquisition system, dynamically adjusting an acquisition strategy based on a safety threshold, and establishing an electrical fire disaster-causing link relationship library; identifying a specific entity relation mode of the electrical fault through a corpus special for the electrical field and a field word embedding technology; establishing a knowledge graph with dynamic evolution capability, and solving entity attribute conflicts based on credibility weighted fusion by adopting an incremental updating mechanism and partition life cycle management; and constructing an electrical fire situation perception model, carrying out early warning threshold adaptive optimization, and generating an analysis report containing technical responsibility and management responsibility through a multi-order disaster-inducing factor backtracking mechanism. Full-chain closed-loop management of electrical fire risks from perception and cognition to decision making is achieved, and the accuracy and tracing depth of fire early warning in a complex environment are remarkably improved.

The utility model relates to the technical field of junction boxes, in particular to an electrical equipment modularized junction box capable of being quickly assembled and disassembled without tools, which comprises an electrical equipment body, a plurality of junction boxes are arranged in the electrical equipment body, and a pair of quick assembly and disassembly assemblies is symmetrically arranged on the upper side and the lower side of each junction box. And a wiring assembly is arranged in each junction box. According to the utility model, tool-free rapid mounting and dismounting between the junction box and the electrical equipment body are realized through arrangement of the rapid dismounting assembly, the junction box can be automatically clamped with the clamping seat in the electrical equipment body during mounting through cooperative use of the arc-shaped clamping block I, the arc-shaped clamping block II and the spring, additional tool assistance is not needed, and the working efficiency is improved. The mounting efficiency is greatly improved; according to the utility model, through the arrangement of the wiring assembly, stable electrical connection between the wire and the copper sheet on the wire holder is ensured, and electrical faults caused by loosening or falling of the wire are effectively prevented.

The invention relates to a semiconductor structure preparation method and a semiconductor structure, and relates to the technical field of integrated circuits, and the method comprises the steps: providing a substrate of which the top surface is covered with a first lamination; after at least one through hole penetrating through the first lamination layer is formed, a first conductive structure with the top surface lower than the top surface of the dielectric lamination layer is formed in the through hole, and part of the dielectric lamination layer is transversely etched and removed to obtain a groove exposing the whole top surface of the first conductive structure; after the first sacrificial layer is removed, a second barrier layer at least covering the side wall of the groove is formed; after the groove is filled with a second sacrificial layer, forming a second lamination layer covering the second sacrificial layer; a T-shaped groove which penetrates through the second lamination layer and is narrow in bottom and wide in top is formed; after the second sacrificial layer is removed, a target groove is obtained; and after a third barrier layer covering the inner surface of the target groove is formed, a target conductive structure is formed in the target groove. At least the problem of electrical failure caused by metal atom migration can be prevented.

The invention belongs to the technical field of aircraft tests, and discloses a test verification method for simulating control surface oscillation monitoring caused by an electrical fault, based on a fly-by-wire flight control system with backup control, a refitted REU is used, a normal control instruction and a backup control instruction received by the refitted REU are superposed, and the control surface oscillation monitoring caused by the electrical fault is realized. Then the motion of the control surface is controlled according to the superposed instruction; connecting a signal generator with the refitted REU, wherein the signal generator outputs a signal with specified frequency and amplitude; a normal control instruction received by the refitted REU is superposed with a signal output control instruction of the signal generator to simulate control surface oscillation caused by an electrical fault in a servo loop. According to the wing control surface oscillation monitoring test method, the response of the tested airplane meets the design expectation, and a test basis is provided for ensuring the safety of an airplane system.

The application discloses a flexible screen high-frequency bending test failure screening system and method, which utilizes a high-frequency bending machine to test the flexible screen, measures the temperature of the bending area, and determines thermal failure if the surface temperature distribution, temperature rise rate or steady-state temperature exceeds a threshold value; if the temperature detection is qualified, the crack density and thermal stress of the bending area are detected after the temperature field is stabilized, and mechanical failure is determined if the threshold value is exceeded; if the mechanical detection is qualified, the resistance change rate and breakdown voltage of the bending area are detected after the temperature and stress fields are both stabilized, and electrical failure is determined if the threshold value is exceeded, otherwise, the product is qualified. The system comprises a system control module, a mechanical loading module, a temperature detection module, a crack detection module, a thermal stress detection module, an electrical signal detection module and a data processing module, the modules are linked, multi-stage detection is adopted, the reliability of the flexible screen under high-frequency bending conditions can be comprehensively evaluated, and unqualified products can be effectively screened out.

The utility model discloses a mechanical device for preventing a steel wire rope of a single winding drum of a crane from disengaging from a groove, which comprises a mounting frame and a roller, the mounting frame is positioned on one side of the single winding drum of the crane, and the roller is detachably and rotatably connected onto the mounting frame. The axis of the roller is parallel to the axis of the single winding drum and flush with the wire outlet end of a steel wire rope on the single winding drum, and the distance between the roller and the steel wire rope is smaller than the depth of a rope groove in the single winding drum. The installation frame and the roller are arranged on one side of the single winding drum, the wire outlet end of the steel wire rope is limited through the roller, and the steel wire rope can be prevented from disengaging from a groove; the whole device is light in structure and convenient to install; by utilizing the rolling friction principle of the roller, the hidden danger of rope clamping in the construction process of the steel wire rope is avoided; a synchronous electrical structure is saved, and potential safety hazards of electrical faults are eliminated; therefore, the practical use requirements of lightness, low cost and reliability are met.

The invention discloses a connector adapter assembly unlocked by using a tool, and relates to the technical field of connectors, primary locking between a wire end shell and a socket shell is realized through stop matching of a cantilever beam elastic structure and a clamping point structure, a CPA is arranged on the cantilever beam elastic structure, and the clamping point structure is arranged on the clamping point structure. The two-stage locking between the wire end shell and the socket shell is realized by utilizing the blocking matching of the CPA retaining clamping point structure and the cantilever beam elastic structure, the locking reliability of the connector is greatly improved by the two-stage locking, and the unlocking stop block is arranged on the CPA, so that the unlocking stop block can be locked in the unlocking process. A force is applied to the unlocking stop block by using a tool so that the CPA displaces, the CPA does not apply a pressure to the cantilever beam elastic structure any more, the CPA can be unlocked by using the tool, the unlocking process is more standard by using the tool to unlock the CPA, the problems of electric arc, short circuit and the like caused by hot plugging are completely eradicated, the electrical fault risk is reduced, and the service life of the CPA is prolonged. The technical problem that manual unlocking is adopted in an existing connector, and the safety of a manual unlocking connector is low is solved.

The utility model provides a kind of calibration device for electrostatic tester, it is related to electrostatic tester calibration device technical field, comprising: shell, shell inside is equipped with installation cavity, installation cavity inside is equipped with fixed shell, fixed shell inside is fixedly installed with calibration device main body, calibration device main body one side is fixedly installed with protective housing;Protection assembly between shell and protective housing is equipped with;Protection board, pull block, spring b and clamping block are included.The kind of calibration device is set through protection assembly, dust can be blocked to enter test jack inside, reduce the risk of contact failure or other electrical failure caused by pollution, maintain the best working condition of equipment, and through the setting of buffer assembly, when equipment accidentally falls or is impacted, reduce the force directly acting on calibration device, to effectively prevent the damage of internal precision components.

The application discloses a high-voltage bushing state diagnosis method and system, relates to the technical field of high-voltage bushing state diagnosis, and aims to solve the technical problem of low accuracy of the existing diagnosis method in high-voltage bushing state diagnosis.The high-voltage bushing state diagnosis method comprises the following steps: obtaining a visible light image and a thermal image of a high-voltage bushing; performing feature fusion on the visible light image and the thermal image to obtain a fused image; extracting feature data in the fused image by using a scale-invariant feature transform; inputting the feature data into a probability neural network optimized by using a salp swarm algorithm; and outputting a high-voltage bushing state diagnosis result represented by the fused image by the probability neural network.The diagnosis result comprises normal, mechanical failure and electrical failure.The technical scheme of the application is used for providing a high-voltage bushing state diagnosis method and system.

The invention discloses a flexible screen high-frequency bending test failure screening system and method.The method comprises the steps that a high-frequency bending machine is used for testing a flexible screen, the temperature of a bending area is measured, and if the surface temperature distribution or the temperature rise rate or the steady-state temperature exceeds a threshold value, it is judged that thermal failure occurs; if the temperature detection is qualified, after the temperature field is stable, detecting the crack density and the thermal stress of the bending area, and if the crack density and the thermal stress exceed a threshold value, judging that mechanical failure occurs; and if the mechanical detection is qualified and the temperature and the stress field are stable, detecting the resistance change rate and the breakdown voltage of the bending area, if the resistance change rate and the breakdown voltage exceed a threshold value, judging that electrical failure occurs, otherwise, judging that the product is qualified. The system comprises a system control module, a mechanical loading module, a temperature detection module, a crack detection module, a thermal stress detection module, an electric signal detection module and a data processing module, all the modules are linked, multi-stage detection is adopted, the reliability of the flexible screen under the high-frequency bending condition can be comprehensively evaluated, and unqualified products can be effectively screened out.

The application relates to a construction method of a PT fuse failure diagnosis model under a plateau environment, and relates to the field of intelligent power distribution systems, which comprises the following steps: establishing and training an electrical fault diagnosis submodel, an environment fault diagnosis submodel and a state fault diagnosis submodel; acquiring structure information and operation environment information of a voltage transformer; generating a corresponding cascade strategy of the voltage transformer based on the structure information and the operation environment information of the voltage transformer; constructing a PT fuse failure diagnosis model based on the corresponding cascade strategy of the voltage transformer, the electrical fault diagnosis submodel, the environment fault diagnosis submodel and the state fault diagnosis submodel; collecting electrical parameters of the voltage transformer; collecting environment parameters of the voltage transformer; collecting a physical state of the voltage transformer; and determining a PT fuse failure cause based on the electrical parameters, the environment parameters and the physical state of the voltage transformer through the PT fuse failure diagnosis model, so that the PT fuse failure cause can be accurately analyzed.

The invention relates to a ventilation and filtration system developed for the elimination of SF6 gas that may have harmful effects in a confined environment and the operating method of this system. The system includes an SF6 gas sensor, a SCADA / communication system, fan and filtration system, illuminated warning system. The system ensures that the safety systems are automatically activated if the concentration of SF6 gas in the environment reaches dangerous levels.

This application relates to an electrical data analysis method, apparatus, wafer-level testing equipment, and storage medium. The method includes: acquiring electrical test data of a test target; the data attributes of the electrical test data include structurally relevant attributes and test-related attributes of the test target; determining whether the electrical test data of the test target is faulty based on the structurally relevant attributes and a first judgment criterion, thereby identifying electrical failure data; classifying the electrical failure data according to the structurally relevant attributes, test-related attributes, and a second judgment criterion, thereby determining the failure mode corresponding to the electrical failure data; and determining the root cause of the test problem corresponding to the failure mode of the electrical failure data based on a preset relationship between failure modes and test problem classification. This method can improve testing efficiency.

The invention provides an interpretable machine learning-based power system transient stability evaluation method and system, and relates to the field of application of an artificial intelligence technology in a power system. By generating samples and selecting multi-dimensional data features, taking an improved LightGBM model as a core classifier and adopting Optuna hyper-parameter automatic optimization, a transient stability evaluation model is obtained and subjected to model training, interpretability analysis adopts a hybrid attribution analysis framework combining SHAP and LIME, the trained transient stability evaluation model is adopted, and the reliability of the transient stability evaluation model is improved. Electrical fault data of the fault power grid are obtained online for transient stability evaluation, and a final transient stability evaluation result is obtained; a high-quality data basis is provided for the model through systematic sample generation and feature engineering, the evaluation precision and speed are improved, the decision-making process is transparent through an SHAP and LIME mixed framework, the whole-process closed-loop management from offline preparation to online application to result analysis is realized, and the evaluation efficiency is improved. And the availability and reliability of the method in engineering practice are enhanced.

The utility model relates to the technical field of metallurgical equipment, in particular to a heat preservation cover device for a square billet waste removing rack roller way, which comprises a base support and a heat preservation cover capable of covering a waste removing roller way, a second connecting plate is fixed on the heat preservation cover, and a rotating plate is fixed at one end, far away from the heat preservation cover, of the second connecting plate. The rotating plate is rotationally connected with the base support, a third connecting plate is fixed to the rotating plate, a balancing weight is fixed to the end, away from the rotating plate, of the third connecting plate, a handle is fixed to the balancing weight, and a fixing piece for fixing the rotating plate and the base support is arranged on the base support. The utility model has the following effects: manual operation is convenient, the counterweight system reduces the force required for opening and closing, and the operation can be completed by a single person; power dependence is avoided, a pure mechanical structure is adopted, and the electrical fault risk is avoided.

The application discloses a traction load harmonic deterioration category identification method and device, and relates to the field of electrical fault diagnosis of railway locomotives and vehicles. The method comprises the following steps: obtaining traction load harmonic deterioration data of a motor train unit; and obtaining the traction load harmonic deterioration category according to the traction load harmonic deterioration data and a pre-created harmonic deterioration category identification model, wherein the harmonic deterioration category identification model is pre-trained by traction load harmonic deterioration training data that has passed effectiveness verification. Before training the harmonic deterioration category identification model, the application pre-verified the effectiveness of the traction load harmonic deterioration original data used for training the model, ensured the effectiveness of the training data, and thus improved the accuracy of harmonic category identification using the harmonic deterioration identification model and reduced the consumption of manpower and resources.

The present application relates to the technical field of electrical fault monitoring, and proposes a kind of electric energy metering box fault monitoring method and system based on Internet of Things, including identifying the physical connection and logical dependency of each component in the box, configuring multi-dimensional self-check parameter index and monitoring weight;Different sampling frequency data is mapped to a unified time axis using a data modal alignment algorithm, generating a feature vector;Based on logical dependency, establish fault evolution topology atlas, and inject disturbance coefficient deviating from topological benchmark into feature vector;Dimension reduction is performed on the feature sequence, and trend curve and transient disturbance features are extracted using variational modal decomposition;Based on monitoring period factor and component failure correlation parameter, construct trigger time monitoring matrix, lock component abnormal conflict domain, calculate euclidean space deviation to locate target abnormal component block;Extract real-time state data, combine internal state characteristics to match health degree grading rules, and output diagnosis results.The present application significantly improves the accuracy, early warning timeliness and precision of metering box fault identification.

A kind of water chiller fault diagnosis method based on reliable online data self-adaption, collects real-time operation data of unit, carries out null value prediction and outlier correction using orthogonal state iteration method, and imports complete unit data into electrical-thermal fault decoupling model to carry out sensor state discrimination, eliminate fault sensor data and fault-free data prediction;Finally, the thermal fault detection model is used to distinguish the thermal state of the unit for fault-free prediction data, and the fault prediction, diagnosis result and auxiliary maintenance decision are obtained.The present application realizes the null value prediction and outlier correction of water chiller data, decoupling diagnosis when electrical fault and thermal fault coexist such as sensor measurement deviation, accurate prediction of water chiller thermal fault, reliable online data selection, online self-adaptive update of fault diagnosis model, and establishes maintenance decision database, greatly improves the intelligent level of water chiller, and can be quickly and efficiently generalized to other types of water chiller systems.

The application provides a stator assembly for driving a motor, comprising a stator core, a first set of windings and a second set of windings, the first set of windings is wound on the stator core, and each phase first sub-winding of the first set of windings is wound by the same metal flat wire, and three-phase input terminals and a star point of the first set of windings are located at an axial first end of the stator core; the second set of windings is wound on the stator core, and each phase second sub-winding of the second set of windings is wound by the same metal flat wire, and three-phase input terminals and a star point of the second set of windings are located at an axial second end of the stator core. The application solves the problem that in the prior art, the winding technology needs to connect each coil through a welding point, which not only increases the complexity of the manufacturing process, but also introduces too many welding points, thereby increasing the possibility of electrical failure; in addition, the welding process may damage the copper wire, leading to unstable electrical performance, and seriously affecting the reliability and service life of the driving motor.

The invention discloses an electrical fault analysis method for heavy crane deviation, which comprises the following steps: S1, judging whether an electrical problem exists or not, and if so, entering the step S2; if not, mechanical fault checking is carried out, it is ensured that no mechanical fault exists, and the step S1 is executed again; s2, checking motor wiring to enable cables from a frequency converter to walking motors at the left end and the right end of the crane to have the same model and the same length; s3, adopting an independent operation mode and a simultaneous operation mode to judge whether the frequency converters are asynchronous or not, if so, entering the step S3, and if not, ending; s3, statically checking whether the basic parameters of the plurality of frequency converters are identical or not, if yes, entering step S4, and if not, adjusting the basic parameters to enable the basic parameters of the plurality of frequency converters to be consistent, and entering step S4; and S4, dynamically monitoring the output of the plurality of frequency converters and the operation data of the motor. According to the method, rapid and effective troubleshooting can be performed, the fault judgment accuracy is improved, and the fault processing time is shortened.

The utility model discloses an electrical control cabinet with a protection structure, comprising a cabinet body, two sides of the cabinet body are both provided with a plurality of heat dissipation ports, the heat dissipation ports are provided with dust covers, one side of each dust cover is tightly attached to one side of the cabinet body, the dust covers are internally provided with dust screens, two sides of the cabinet body are both fixedly connected with two groups of fixing plates, and the fixing plates are fixedly connected with the cabinet body. The two sets of fixing plates are symmetrically distributed, sliding grooves are formed in the fixing plates, sliding blocks are arranged in the sliding grooves in a sliding mode, and one sides of the sliding blocks are fixedly connected with the side edge of a dust cover; and fixing holes are formed in the two groups of fixing plates. According to the electrical control cabinet with the protection structure, dust is prevented from being accumulated on the electrical components to cause accidental conduction between the electrical components, so that electrical faults and fire disasters are prevented, the internal electrical components are effectively protected, and the safety of equipment is greatly improved.

The invention relates to the technical field of medical equipment fault diagnosis, and discloses an injection pump electrical fault diagnosis method based on current harmonic analysis. The method comprises the following steps: acquiring current harmonic reference data of the motor in a healthy state through initialization calibration; during operation, a real-time current signal and the reference are subjected to normalization processing, and a real-time harmonic spectrogram with prominent deviation is generated. Feature vectors are extracted and matched with the fault feature library, and similarity indexes are calculated. And starting a multi-stage fault judgment process comprising a cross validation step based on the index so as to determine the fault type and grade, and generating a processing instruction sequence. According to the method, the spectrum change is continuously monitored and fed back to the judgment process while the instruction is executed, so that the dynamic correction of the diagnosis result is realized. According to the method, the detection sensitivity of early weak fault features is improved through differential comparison, the accuracy and reliability of diagnosis are improved by using a closed-loop verification mechanism, and false alarms and missing alarms are reduced.

The utility model relates to a socket technical field especially relates to a German type wall corner socket, including the lower cover, the top of lower cover is provided with the upper cover, the inside of lower cover is provided with a plurality of single break switch, one side of single break switch is provided with USB power panel, one side of USB power panel is provided with double break switch, one side of double break switch is provided with grounding clamp subassembly, the bottom of grounding clamp subassembly is provided with a plurality of protection box, the bottom of protection box is provided with L pole conducting strip, the bottom of L pole conducting strip is provided with N pole conducting strip. The utility model adopts the wall corner socket of 90 degrees plug -pull design, maximizes the space saving, improves the use efficiency of space, has reduced the interference between the socket, can also conveniently insert multiple electrical equipment simultaneously, solved the problem that the traditional socket cannot insert multiple plugs simultaneously because too close, reduced the risk of electrical failure, also avoided the electrical fire and other safety hazards caused by socket contact bad, improved the aesthetic and neatness.

The invention discloses an electrical signal diagnosis method and system for a mechanical tripping fault of an on-load tap-changer mechanism, and the method comprises the steps: building a time control signal model of a time control switch, generating a time sequence signal, building a tap-changer electromagnetic transient model under a normal working condition based on the time sequence signal and a tap-changer circuit physical model, and obtaining a standard electromagnetic transient characteristic; establishing a tapping switch tapping selector model, configuring a tapping selector and contact action time sequence in the tapping switch tapping selector model based on the electrical fault states of the main contact and the auxiliary contact, and establishing an electromagnetic transient model under the fault of the fault state; operating the under-fault electromagnetic transient model under the mechanical tripping fault of the tap switch mechanism to obtain a first fault electromagnetic transient characteristic; configuring a lightning arrester model between the stages of the tap switch, and obtaining a second fault electromagnetic transient characteristic; and diagnosing the mechanical tripping fault of the tap switch mechanism through the standard electromagnetic transient characteristic, the first fault electromagnetic transient characteristic and the second fault electromagnetic transient characteristic.

The present application relates to the technical field of medical equipment fault diagnosis, and discloses an injection pump electrical fault diagnosis method based on current harmonic analysis. The method comprises obtaining current harmonic reference data under the motor health state through initialization calibration. In operation, the real-time current signal is normalized with the reference to generate a real-time harmonic spectrum graph highlighting the deviation. The characteristic vector is extracted and matched with the fault characteristic library to calculate the similarity index. Based on the index, a multi-level fault judgment process including a cross-validation step is started to determine the fault type and level and generate a disposal instruction sequence. While executing the instructions, the method continuously monitors the spectrum changes and feeds back to the judgment process to realize dynamic correction of the diagnosis result. The method improves the detection sensitivity of early weak fault characteristics through differential comparison, improves the accuracy and reliability of diagnosis by using a closed-loop verification mechanism, and reduces false positives and false negatives.