23 results about "Virtual maintenance" patented technology

The invention relates to the technical field of new energy electric power construction and operation and maintenance, in particular to a new energy equipment virtual maintenance system and method supporting fault drilling. The system comprises five core modules: an asset and twinning modeling module constructs an electrical-mechanical-thermal multi-physics field coupling digital twinning model of a wind generating set, a photovoltaic inverter and an energy storage battery cluster, and drives a fault drilling engine; the fault drilling engine triggers a fault scene based on preset event-condition-action logic and a job ticket operation state, and activates a fault evolution chain through violation operation; the job ticket and process arrangement module simulates the whole maintenance process and checks security constraints in real time; the safety interlocking and protection simulation module verifies the operation in real time according to the relay protection constant value, triggers a protection action during violation and feeds back the protection action to the fault engine; and the virtual-real fusion interaction module synchronizes a virtual instruction to an engine and an external device through a communication protocol, so that the consistency of virtual-real operation and protection action is ensured, and co-simulation and security verification of the whole system are realized.

The invention relates to the technical field of intelligent assessment management, and discloses an assessment method for a virtual maintenance training process, and the method comprises the following steps: collecting real-time operation data in the maintenance training process through a virtual reality device, and the real-time operation data comprises a gesture track, a tool use sequence and an environment interaction log; performing noise filtering and format unification processing on the real-time operation data to generate a standardized operation data stream; key operation nodes in the standardized operation data flow are extracted based on a maintenance knowledge graph, and operation feature vectors are generated; according to the invention, systematic fusion and standardization processing are carried out on multi-source heterogeneous real-time operation data, and an objective evaluation benchmark is constructed based on a maintenance knowledge graph, so that comprehensive quantification and description of an operation process can be realized; the problems that the evaluation dimension is single and the real skill level is difficult to comprehensively reflect due to the dependence on subjective judgment and a single index are solved, and the objectivity and comprehensiveness of assessment are improved.

The invention discloses a predictive maintenance method for an implicit state of power equipment, and belongs to the technical field of intelligent operation and maintenance of the power equipment. According to the method, multi-mode information such as SCADA data, acoustic vibration data, infrared thermal image data and partial discharge data is collected, space-time alignment and attention mechanism fusion are carried out, and a hidden state code representing the internal health state of equipment is extracted; a dynamic state deduction model combining physical constraint and data driving is constructed, and prediction of the future state evolution trajectory of the equipment is achieved; and performing a virtual maintenance experiment in the digital twin based on a prediction result, and generating an optimal maintenance strategy through multi-objective optimization. According to the method, the problems that the hidden state of the equipment cannot be sensed and the prediction capability is lacked in the prior art are solved, the conversion from passive maintenance to predictive maintenance is realized, and the accuracy and foresight of operation and maintenance of the power equipment are improved.

The invention belongs to the technical field of aircraft virtual maintenance training, and particularly relates to a credibility evaluation method for an aircraft virtual maintenance training system, which comprises the following steps of: a, constructing a multi-dimensional evaluation index system which comprises five evaluation dimensions, the three dimensions are a visual simulation precision dimension, a physical interaction authenticity dimension, an environment dynamic consistency dimension, a personnel physiological and psychological reaction suitability dimension and a maintenance tool physical attribute simulation precision dimension; b, determining the weight of a comprehensive factor of each evaluation dimension by adopting an analytic hierarchy process; c, performing quantitative scoring on the comprehensive factor of each evaluation dimension by using a fuzzy comprehensive evaluation method to obtain a quantitative scoring result of the comprehensive factor; and d, calculating a credibility comprehensive evaluation value C of the aircraft virtual maintenance training system according to the quantitative scoring result of each comprehensive factor and the corresponding weight thereof, and delimiting a credibility grade according to the comprehensive evaluation value C.

The invention discloses a maintenance step simulation method based on model fusion, and relates to the technical field of virtual maintenance. According to the method, a high-fidelity multi-physics field simulation environment is constructed by deeply fusing a three-dimensional geometric model with physical attributes such as density and friction coefficient and assembly logic; an obstacle avoidance path is planned by using a fast expansion random tree algorithm, and real-time calculation of the deformation of the flexible pipeline and the statics equilibrium state of parts is realized in combination with a mass spring model and a polyhedral friction cone theory. On the basis, a multi-dimensional evaluation system containing space gaps, view shielding and operation torque weights is constructed, feasibility confidence indexes of overhaul steps are quantitatively evaluated, and a virtual guide potential field and directed acyclic graph logic verification are assisted, so that an overhaul guide file conforming to physical rules and process specifications is finally and automatically generated. The problems that traditional simulation lacks mechanical verification and flexible body simulation is distorted are effectively solved, and the reliability of maintenance process design is remarkably improved.

The application discloses a kind of integrated modeling methods comprising mechanical simulation and virtual maintenance attributes, comprising the following processes: respectively establishing geometric feature model, interactive feature model and state feature model, form integrated equipment model comprising mechanical simulation and virtual maintenance attributes;Integrated equipment model is divided into state execution layer, motion logic layer, multi-dimensional presentation layer;State execution layer is used to execute control command, external control command data is first transmitted to state execution layer, with the output of state execution layer as the input of motion logic layer, the result is obtained by processing motion logic layer, then the result is transmitted to multi-dimensional presentation layer, simulation result is obtained by processing by multi-dimensional presentation layer, and is presented by multi-dimensional way.The application can not only realize multi-dimensional presentation equipment / device geometric characteristics, but also can express motion logic and execution state in equipment / device simulation process completely, and can be realistically simulated mechanically and virtually maintained.

The invention discloses an equipment maintenance cost management and control system and method, and relates to the technical field of industrial equipment management. The system comprises an Internet of Things data sensing layer, a maintenance digital twinborn construction module, a multi-dimensional dynamic preventive maintenance cost prediction engine, a cost control and execution layer based on an intelligent contract and a self-adaptive cost allocation and optimization feedback loop. The method comprises the following steps: collecting data in real time and constructing an equipment maintenance digital twinborn body; the prediction engine generates a virtual maintenance unit containing predicted cost based on the twinborn body data; when the risk exceeds a threshold value, a block chain intelligent contract is automatically triggered, and automatic and traceable management and control are carried out on budget, process and payment; after maintenance is completed, cost is automatically shared, and data is fed back to optimize the model. According to the method, the change of the maintenance cost from passive response to active prediction and from post-event recording to whole-process automatic management and control is realized, transparency is ensured through an intelligent contract, a self-optimization closed loop is formed, and the refinement level and cost effectiveness of cost management and control are improved.

The invention discloses a virtual simulation and evaluation method for outboard maintenance of large equipment of a manned spacecraft. The method comprises the following steps: S1, establishing a virtual simulation model for outboard maintenance of the large equipment of the manned spacecraft; s2, setting constraint conditions of astronauts; s3, performing virtual maintenance process simulation and multi-person view angle and interactive setting; s4, transfer and installation path planning of the large-scale equipment; and S5, performing man-machine ergonomics analysis and judgment. According to the manned spacecraft large-scale equipment outboard maintenance virtual simulation and evaluation method provided by the invention, an active stereo display technology, a virtual training environment building technology and a virtual operation process model building technology are taken as main research objects; a virtual reality man-machine interaction mode which integrates an operation handle, a stereoscopic display system, a motion tracker and other devices and has immersion performance is constructed, analysis and evaluation of the whole process and multiple factors can be covered, visibility, reachability, operability, maintenance time and the like of the maintenance process outside the cabin are verified, and a reference basis is provided for reasonability of the maintenance process.

This invention discloses a mechanical fault auxiliary maintenance decision-making method and system based on A-Star, belonging to the field of virtual maintenance. It includes: receiving a faulty component and the designation of the first component to be disassembled; starting from the first component and ending with the faulty component, calculating the comprehensive cost under each maintenance strategy based on the different attributes of the components; and using the A-Star algorithm to traverse the adjacent 3D models of the current component model to obtain multiple candidate maintenance solutions. The target equipment includes multiple components, and each component in the 3D model includes physical attributes and at least one disassembly / assembly attribute. The disassembly / assembly attribute includes: disassembly / assembly cost, disassembly / assembly time, number of tools required for disassembly / assembly, and number of personnel required for disassembly / assembly. This invention calculates costs based on the different attributes of the components and uses the A-Star algorithm to traverse the adjacent 3D models of the current component model, finding the next component with the minimum cost at each step, thereby improving maintenance efficiency and reducing maintenance failure rate.

The invention relates to a vehicle management system, a vehicle control method and an electric vehicle. A vehicle management system applied to a vehicle is provided with one or more processors and virtual maintenance. The one or more processors generate a simulated driving environment that simulates a driving environment of the virtual moving body. The virtual maintenance is a maintenance that is virtually performed on the virtual moving body. The one or more processors execute a first environment change process for changing the simulated driving environment on the basis of a maintenance index indicating the degree of necessity of the virtual maintenance, and execute a second environment change process for changing the simulated driving environment in accordance with at least the virtual maintenance.

The invention relates to the technical field of production line scheduling, and provides a digital twinning-based production line scheduling control method and system, and the method comprises the steps: constructing a production line digital twinning model which comprises a virtual equipment structure, a task queue and operation time accumulation, and performance attenuation coefficient type health state parameters; acquiring equipment operation data in real time to update model health parameters, and pre-judging equipment fault time through a trend extrapolation fitting parameter change curve; and inserting a virtual maintenance event into the model to carry out scheduling simulation, calculating task completion time, and redistributing conflicting tasks to adaptive equipment by a load balancing strategy in combination with equipment load and task emergency degree when a task conflict occurs, thereby realizing dynamic perception of the equipment health state and fault pre-judgment, reserving a reasonable maintenance space for scheduling formulation, and realizing real-time scheduling. The scheduling scheme is prevented from being disorganized due to sudden faults, the problem of load unbalance caused by temporary adjustment is solved, and the overall operation stability and scheduling efficiency of a production line are improved.

The utility model discloses a virtual reality-based CBTC (Communication Based Train Control) vehicle-mounted equipment intelligent maintenance cockpit, and belongs to the technical field of rail transit operation and maintenance simulation training. The device comprises a sealable simulation cockpit; the driving console is installed in the simulation cockpit. A key control component is arranged on the driving console; the 3D display screen is fixedly connected to one side, close to the driving console, in the simulation cockpit; the control host is arranged below the driving console; the seat base is used for adjusting the height and the front and back of the seat; the VR head-mounted display is arranged above the seat; the integrated earphone is integrally connected with the VR head-mounted display; the data glove hanger is connected with the inner wall of the simulation cockpit; the data glove is hung on the data glove hanger, and a force feedback device is integrated on the data glove. According to the utility model, real hardware and a virtual maintenance scene are integrated, immersive maintenance training experience is provided, and the system has the advantages of high expansibility, low maintenance cost and good adaptability.

The invention provides a three-dimensional plan lightweight editing method based on a Three-js component, and relates to the technical field of virtual maintenance. On the basis of component integration and component motion editability of a three-dimensional product model, a component motion coordinate system reconstruction mechanism, a unitized plan decomposition and expression mechanism, a formalized component motion information configuration mechanism and a Three-js component lightweight model dynamic rendering mechanism are organically combined, so that the component motion coordinate system can be reconstructed, and the component motion editability of the three-dimensional product model is improved. A corresponding three-dimensional plan editing mechanism can realize decoupling binding between a maintenance plan expression lightweight editing operation and a three-dimensional model lightweight dynamic rendering operation, and plan designers can be ensured to randomly switch an observation view angle of a three-dimensional plan model in a three-dimensional plan editing process so as to improve subsequent product maintenance guidance flexibility. And convenient editing (or additional recording) operation aiming at the three-dimensional plan can be realized, so that the convenient plan dynamic expansion requirement for various fault modes can be met.

The invention provides a diesel engine maintainability virtual verification method and system based on a complex model. The method comprises the steps of maintainability verification demand analysis, verification scheme making, maintenance virtual prototype modeling, virtual verification execution and analysis and maintainability comprehensive evaluation. Through subsystem hierarchical division and disassembly sequence analysis, a check task is clear, a model and environment construction specification is formulated, a homologous multi-granularity lightweight model is adopted to construct a prototype containing virtual maintenance behaviors and disassembly sequence simulation, and dynamic analysis of spacing, collision, man-machine work efficiency and process is carried out in parallel. And after comprehensive evaluation, identifying design weak points and proposing improvement suggestions. According to the method, the design early-stage maintainability virtual verification is realized, the verification systematicness, accuracy and efficiency are improved, the cost is reduced, and the period is shortened.

The invention provides a simulation training system for a secondary circuit of a power system and a working method of the simulation training system. The simulation training system comprises a simulation construction module, a circuit calculation engine, a virtual tool module and a defect simulation module. Wherein the simulation construction module is used for constructing a target secondary circuit simulation model comprising a terminal strip and multiple components. According to the circuit principle, a circuit equation is constructed and solved, node potentials are calculated, and component states are iteratively updated, so that the dynamic working process of a loop is simulated. Wherein the virtual tool module provides at least one virtual maintenance tool for a user to measure or operate the simulation model and perform loop state diagnosis or defect repair. Wherein the defect simulation module is used for presetting at least one type of circuit defect in the simulation model and creating a fault scene for training.

The invention provides a precise physical collision detection and virtual assembly method and system for a diesel engine, and the method comprises the steps: constructing a part virtual model containing tolerance information, and carrying out the efficient collision detection through employing an optimized bounding volume hierarchical structure (BVH) based on a volume decomposition and space compression algorithm. The core of the method is to introduce a tolerance decision mechanism: in a precise detection stage, if two collision parties are an assembly pair, the penetration depth is calculated and compared with a tolerance range, and a collision response is triggered only when the two collision parties are out of tolerance. Meanwhile, a three-stage virtual assembly process integrating free control of physical simulation and geometric constraints, intelligent constraint addition and mechanical constraint navigation is innovatively provided. According to the method, the problems of low virtual assembly precision, poor real-time performance and lack of tolerance fusion capability in the prior art are effectively solved, and the operation reality sense, the assembly precision and the calculation efficiency of complex equipment such as a diesel engine in virtual maintenance simulation are remarkably improved.

This invention relates to the field of production line scheduling technology, and provides a production line scheduling and control method and system based on digital twins. The method includes constructing a digital twin model of the production line containing virtual equipment structures, task queues, accumulated running time, and performance degradation coefficients (health status parameters); real-time acquisition of equipment operating data to update the model's health parameters; prediction of equipment failure time by fitting parameter change curves through trend extrapolation; insertion of virtual maintenance events into the model to conduct scheduling simulations and calculate task completion times; and, in the event of task conflicts, combining equipment load and task urgency, redistributing conflicting tasks to suitable equipment using a load balancing strategy. This achieves dynamic perception of equipment health status and early prediction of failures, reserving reasonable maintenance space for scheduling, avoiding disruption of scheduling plans by sudden failures, solving load imbalance problems caused by temporary adjustments, and improving the overall operational stability and scheduling efficiency of the production line.

The invention discloses a switch cabinet maintenance system based on a virtual reality technology, which comprises a main control module, a virtual building module, an external detection module, a device detection module, an access detection module, a terminal detection module and a virtual maintenance module, and is characterized in that the virtual building module collects real scene data of a switch cabinet and builds a virtual model; according to the invention, the virtual switch cabinet is built through the virtual reality technology, the external structure of the switch cabinet is checked, the damaged position is determined, the maintenance position is continuously reduced, and the internal electrical components, paths, wiring terminals and grounding terminals are detected, so that the internal check is orderly and efficient. The switch cabinet is optimally used virtually, and the damage condition is simulated, so that people can determine the position needing to be overhauled from the detection of the virtual switch cabinet and predict the possible damage in the future, the overhaul information can be mastered more comprehensively, and the overhaul is helped.

The goal is to incorporate maintenance considerations into technologies that simulate driving environments, thereby allowing vehicle users to experience a more realistic driving environment. [Solution] The vehicle management system generates a simulated driving environment that simulates the driving environment of a virtual mobility device. Virtual maintenance is maintenance performed virtually on the virtual mobility device. The vehicle management system performs a first environment change process that changes the simulated driving environment based on a maintenance index that indicates the degree of need for virtual maintenance. The vehicle management system performs a second environment change process that changes the simulated driving environment in response to at least virtual maintenance.

The application discloses an intelligent virtual human assisted maintenance method and system based on SAC algorithm and FSM, and belongs to the virtual human simulation field. The application combines deep reinforcement learning and finite state machine to design the autonomous maintenance behavior of the virtual human. The simple actions such as walking, running, standing and turning of the virtual human are controlled by using the state machine, and the complex actions such as maintenance are trained by using the deep reinforcement learning. Compared with the traditional virtual human assisted maintenance design, the application avoids excessive human intervention, reduces the system running memory consumption, effectively improves the maintenance efficiency, makes the virtual human have the fidelity, and effectively avoids the shortcomings of the state machine and the behavior tree method. The virtual human visual perception model based on the multi-Cube trigger is used, and the problems of the scene unable to be deeply optimized and the missed objects caused by the ray detection are avoided. The application makes the virtual human more intelligent, helps to enhance the reality and credibility of the virtual human, and improves the creativity, immersion and real-time interactivity of the virtual maintenance operation.

A vehicle management system that is applied to a vehicle includes one or more processors and virtual maintenance. The one or more processors generate a simulated driving environment that simulates a driving environment of virtual mobility. The virtual maintenance is maintenance to be virtually performed on the virtual mobility. The one or more processors execute first environment change processing of changing the simulated driving environment, based on a maintenance indicator indicating a degree of need for the virtual maintenance, and execute second environment change processing of changing the simulated driving environment, according to at least the virtual maintenance.

1. Name of the product in this design: Aircraft Virtual Maintenance Trainer (ARJ21). 2. Purpose of this design: For use in simulated aircraft maintenance training. 3. The key design features of this product are its overall shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.