CN108287483A - A kind of immersion Virtual Maintenance Simulation method and system towards Product maintenance verification - Google Patents

A kind of immersion Virtual Maintenance Simulation method and system towards Product maintenance verification Download PDF

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Publication number
CN108287483A
CN108287483A CN201810045731.6A CN201810045731A CN108287483A CN 108287483 A CN108287483 A CN 108287483A CN 201810045731 A CN201810045731 A CN 201810045731A CN 108287483 A CN108287483 A CN 108287483A
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maintenance
virtual
scene
simulation
verification
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CN108287483B (en
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周栋
郭子玥
周文强
陈嘉宇
周启迪
吕川
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Beihang University
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Beihang University
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B17/00Systems involving the use of models or simulators of said systems
    • G05B17/02Systems involving the use of models or simulators of said systems electric

Abstract

The invention discloses a kind of immersion Virtual Maintenance Simulation method and system towards Product maintenance verification, this method and system pass through the practical maintenance task of analysis product and process, immersion Virtual Maintenance Simulation is designed, conventional digital model machine is subjected to model conversion and a series of processing, it imported into Virtual Maintenance scene, and complete the construction work of entire Virtual Maintenance scene, meet actual dynamics and physics constraint for the object application in scene, multichannel rendering is carried out to virtual scene, configuration interactive function, acquire the action data of user in the scene, complete the maintainability verification of product.The present invention is based on a kind of immersion Virtual Maintenance Simulation method and system towards Product maintenance verification, overcome the deficiency of conventional desktop formula Virtual Maintenance Simulation, improve the efficiency and authenticity of Virtual Maintenance Simulation.

Description

A kind of immersion Virtual Maintenance Simulation method and system towards Product maintenance verification
Technical field
The present invention relates to capability of maintenance design and the technical fields of verification, and in particular to it is a kind of towards Product maintenance verification Immersion Virtual Maintenance Simulation method and system.
Background technology
Maintainability is the build-in attribute of product.For large scaled complex product, maintainability is to the performance of product efficiency, operation cost And it is safe to use all particularly significant.Good capability of maintenance design can make product after coming into operation, be obviously improved efficiency, It cuts operating costs, improves product safety.Therefore, in the design phase, it should give capability of maintenance design and adequately pay attention to.
Maintainability verification is an important ring for Product maintenance design.Whether the qualitative, quantitative design of Product maintenance meets It is required that will be tested by maintainability verification.Currently, digital prototype has replaced physical prototyping, the design phase Through largely being used.The application of digital prototype can be such that designer carries out in early stage, and to product progress, visually design is lived It is dynamic, find that design defect is simultaneously improved in time, it is high to avoid physical prototyping cost, once find design defect, but due to The problem of design work has been completed and has been difficult to change.
However, for maintainability verification, traditional method still has certain limitation.This is because, repair It is a typical human-computer interaction activity, and traditional maintainability verification is substantially and carries out in Table top type simulation software, by Designer is based on digital prototype and makes one section of emulation animation, and repairing property is verified during emulation animation.It is this non- The emulation mode of immersion is larger by designer's subjective impact.For same maintenance task, experience is different, is accustomed to different set Meter personnel, the maintenance simulation made may have a larger difference, and due to emulation personnel do not have it is actual or close to The repair of true environment is experienced, this can bring larger uncertainty to maintainability verification result.In addition, emulation animation is often all It is that the method controlled based on key frame is made, in order to allow emulation animation approaching to reality repair, designer to need to expend big The time energy of amount causes simulation efficiency low in adjustment and the operation of increase key frame.
Invention content
The object of the present invention is to provide a kind of immersion Virtual Maintenance Simulation method towards Product maintenance verification and it is System, it can overcome the shortcomings of that the prior art is above-mentioned, realize more quick and objective repairing property verification.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of immersion Virtual Maintenance Simulation methods towards Product maintenance verification, including walk as follows Suddenly:
Step 1 is designed product virtual maintenance simulation task;
Step 2, the processing that Virtual maintenance simulation is carried out to digital prototype;
Step 3, according to first two steps obtain as a result, digital prototype is imported virtual environment, build Virtual Maintenance scene, build Vertical dynamics and physical constraint;
Step 4 carries out multichannel rendering to the Virtual Maintenance scene built;
Step 5, according to interactive device, bind interactive operation, 3D vision information exported for user;
Step 6 captures and records action data of the user in virtual scene;
Step 7, according to user in immersion scene with the interaction scenario of virtual maintenance environment, to Product maintenance carry out It verifies.
Optionally, product virtual maintenance simulation task design method includes:
Product virtual maintenance task is analyzed, determines maintenance program and flow;
According to specific maintenance task scene, required maintenance tool, auxiliary Support Resource inventory are obtained;
Obtaining the Virtual Maintenance Simulation needs the Product maintenance carried out to verify item.
Optionally, the processing method of digital prototype Virtual maintenance simulation includes:
Model conversion is carried out to digital prototype;
Light-weight technologg digital prototype model deletes unnecessary information, reduces data volume;
Needs are emulated according to immersion, other processing are carried out to digital prototype, texture, color are such as added, to digital prototype Each parts recombinate etc..
Optionally, Virtual Maintenance scenario building method includes:
According to maintenance task and Virtual Maintenance scene needs, its in addition to repairing target device is added in virtual environment His mathematical model, such as maintenance tool, ancillary equipment etc.;The size of each model machine and between position relationship tally with the actual situation.
Optionally, dynamics and physical constraint method include:
According to the practical kinetic characteristics of product, each type kinematic pair is added for virtual prototype, its movement is made to meet maintenance simulation Authenticity need;
It is that the object in virtual environment adds physical constraint, definition object is rigid body according to product actual physics characteristic Or flexible body, the gravity direction in virtual environment is set.
Optionally, interactive device operation binding method includes:
It, will be in each of virtual maintenance environment based on Virtual-Reality Peripheral Network (VRPN) agreement Class interactive function is tied on virtual reality peripheral equipment.
Optionally, maintainability verification method includes:
Item is verified according to the maintainability of required progress, during user interacts with virtual environment, to maintainability correlation Item carries out verification verification.
The present invention also provides a kind of immersion Virtual Maintenance Simulation system towards Product maintenance verification, the Virtual Maintenances Analogue system includes:
Database management module, the digital mould for storing, reading common maintenance support resource in Virtual Maintenance scene Type;
Digital prototype processing module carries out model conversion, light-weight technologg and other processing works to digital prototype;
Artificial tasks build module, import treated digital prototype, establish artificial tasks scene, and are the object in scene Body establishes dynamics and physical constraint;
Multichannel renders display module:The rendering of multichannel figure and output are carried out to repair scene;
Scene interactivity module:By for being tied on relevant hardware devices with the operation that virtual maintenance environment interacts, And it is interacted with virtual scene expansion;
Motion capture module:Action data of the user in virtual scene is captured and records, to support scene interactivity, and Maintainability is verified;
Maintainability verification module verifies maintainability continuous item during Virtual Maintenance Simulation.
Optionally, artificial tasks design module includes:
Product actual task analyzes submodule, is used for the practical maintenance task and flow of analysis product;
Virtual Maintenance task design submodule designs Virtual Maintenance Simulation task for being analyzed according to product actual task Flow.
Optionally, digital prototype processing module includes:
Format conversion submodule:For digital prototype to be carried out model conversion;
Light-weight technologg submodule:Light-weight technologg is carried out to digital prototype, rejects unnecessary information, reduces data Amount;
Aid in treatment submodule:For adding texture, color, each parts of digital prototype are recombinated etc..
Optionally, artificial tasks structure module includes:
Model imports submodule:For the mathematical model of treated digital prototype and other maintenance support resources to be imported Into virtual environment;
Virtual scene builds submodule:Virtual Maintenance scene is built, the status requirement of each model as requested is on the scene It is laid out in scape, reduction actual products repair scene;
Dynamics and physical constraint module:Apply the dynamics and physics for meeting truth for the object in virtual scene Constraint.
Optionally, scene interactivity module includes:
Commander equipment binds submodule:For interactive operation instruction to be tied to interactive device;
Scene interactivity submodule:It is interacted with virtual scene expansion for user.
Optionally, scene interactivity module includes:
Commander equipment binds submodule:For interactive operation instruction to be tied to interactive device;
Scene interactivity submodule:It is interacted with virtual scene expansion for user.
Optionally, motion capture module includes:
Action data captures acquisition submodule, the action data for capturing and acquiring user;
Interactive command positions submodule, for providing location information for interactive instruction;
Vision tracks submodule, for when user is in the generation movement of virtual scene sight, providing track and localization service.
Optionally, maintainability verification module, in the interactive process of Virtual Maintenance Simulation, to maintainability continuous item into Row is verified.Maintainability the checking item, content and standard are required by capability of maintenance design personnel according to the practical capability of maintenance design of product And it formulates.
The advantages of the present invention over the prior art are that:
(1) present invention can quickly carry out the Virtual Maintenance Simulation of product.Existing technical method is controlled based on key frame, The time for making Virtual Maintenance Simulation process is often tens times of the practical virtual emulation time even hundred times, and of the invention The Production Time that Virtual Maintenance Simulation can greatly be shortened, improve the producing efficiency of emulation.
(2) present invention, which can be capability of maintenance design personnel, has preferable feeling of immersion, so that designer is participated in repair imitative In true process, by being interacted with digital prototype under virtual environment, the accuracy that maintainability verifies verification is improved.
(3) the present invention provides complete sets, in the immersion maintainability that the product preliminary design phase can carry out Check method and system are verified, the needs of current Complex Product Design is met, shortens the design cycle, reduce and be designed to This, improves design efficiency.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is the immersion Virtual Maintenance method flow diagram in the embodiment of the present invention;
Fig. 2 is the immersion Virtual Maintenance based on certain modular structure schematic diagram in the embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The verification for carrying out immersion is designed Product maintenance based on virtual reality technology, and desktop is only used with traditional Formula simulation software, which carries out the verification of non-immersion Virtual Maintenance, very different place.
Fig. 1 is a kind of overview of immersion Virtual Maintenance Simulation method verified towards Product maintenance of the present invention, Including:
Step 101:Deisgn product Virtual Maintenance Simulation task.
Wherein, deisgn product Virtual Maintenance Simulation task specifically includes:The actual maintenance task of detailed analysis product first And process, it is combed to repairing dimensional object, repair step and maintenance support resource (such as maintenance tool, auxiliary mould etc.).
Later, based on the analysis to practical maintenance process, Virtual Maintenance Simulation embodiment is determined.The program includes to void The determination of Awaiting Parts, the foundation of maintenance channel (path) planned, specifically repair step and repair are protected in quasi- maintenance simulation Hinder the agreement of resource.
For different products, to be directed to products characteristics and formulate maintainability verification item, wherein general verification item is visual Property, accessibility, operating space, repair posture, error protection etc..In the step, designer should combine actual product repairing Property require, formulate maintainability verify classification and check standard.
Step 102:Digital prototype processing.
The format for the digital prototype that 3 d modeling software creates is different, causes the digital prototype of various formats to be included Parameter type, information also have larger difference.Therefore, traditional digital prototype cannot be used directly to carry out Virtual Maintenance Simulation, It needs to carry out model conversion.This step is by the format conversion of various digital prototypes at the unified format that can carry out virtual interacting.
After completing model conversion, light-weight technologg is carried out to model.The meaning of the step is to reduce the data volume of model, Improve rendering efficiency and interactive efficiency.The step can be completed by lightweight algorithm.
In addition, according to actual emulation needs, other pretreatment works are carried out to digital prototype, such as deleting does not influence virtually to tie up It repaiies emulation and unnecessary digital prototype component, increase model assembly that maintenance simulation needs and by several component normalizings An entirety is turned to, increases texture, color etc., to improve the sense of reality and interactive efficiency of immersive environment.
Step 103:Virtual Maintenance scene is built, dynamics and physical constraint are established.
Virtual Maintenance scene is the environment of entire Virtual Maintenance Simulation, which greatly enhances Virtual Maintenance work The authenticity of work.After Virtual Maintenance Prototyping structure is completed, by all virtual prototypes and constraint according to certain rule It is added in Virtual Maintenance scene with order, the content of entire virtual scene is made gradually to enrich, for the progress of Virtual Maintenance work More reasonably environment is provided.The step specifically includes:
Model machine in step 102 is imported into virtual scene.
By other virtual prototypes in environment such as workbench, working stand, repair auxiliary tool etc. according to the position determined Relationship is loaded into virtual environment.
It is each sample in virtual scene according to the kinetic characteristics and physical attribute of each component of product in real world Machine adds dynamics and physics constraint.For example, hinge revolute pair is added for the structural member only relatively rotated, there was only phase Prismatic pair is added between mobile structural member.According to object during exercise and after by force effect shape size variation relation, It sets object to rigid body or beformable body, and acceleration of gravity etc. is set for entire virtual world.
Step 104:Multichannel rendering is carried out to Virtual Maintenance scene.
For projecting Virtual Maintenance scene solid, need to carry out multichannel rendering to virtual scene.A kind of allusion quotation The rendering mode of type be setting four rendering nodes, respectively to the front of virtual scene residing for user, lower section, left, right into Row figure renders.Later according to different stereoprojection modes, four rendering nodes export rendering content according to certain mode.
Step 105:Configuration interactive function.
User needs by virtual reality device according to the difference of interaction purpose with the needs that interact of Virtual Maintenance scene The function of these equipment is configured.It, will based on Virtual-Reality Peripheral Network (VRPN) agreement Interactive device is mapped on the standard device in VRPN needed for repair virtual emulation, is tied up Virtual Maintenance interactive instruction with this It is scheduled in interactive device.Common type is as shown in table 1.
Table 1
Step 106:Capture action data of the user in virtual scene.
Action data of the user in virtual scene is acquired using optical profile type motion capture system.In user's body Suitable position arrange optical calibrating point, capture exercise data of the user in virtual environment.In addition, according to practical interaction need It asks, it is also necessary to arrange that optical calibrating point, such as anaglyph spectacles, control crank etc. are the friendship of these interactive devices on interactive device Mutually instruction provides track and localization function.
Step 107:Product maintenance is verified.
After above-mentioned steps completion, the Product maintenance carried out under immersive environment verifies work.Carry out maintainability core The concrete mode looked into is:
User in virtual environment according to the Virtual Maintenance Simulation scheme made, according to Virtual Maintenance flow, It is moved in repairing route, close to virtual prototype, adjustment repair posture dismounts virtual prototype, the operations such as cutting.This Outside, user can also carry out ranging, label etc. to the object in virtual environment.
In this process, according to maintainability the checking item, content and the standard made, in conjunction with being captured in virtual environment The data arrived, verify Product maintenance.Maintainability the checking item, content and standard, should be by designer according to product Practical capability of maintenance design require and formulate.
The present invention also provides a kind of immersion Virtual Maintenance Simulation systems towards Product maintenance verification.
As shown in Fig. 2, the Quantitative Evaluation System in the embodiment of the present invention includes database management module 201, digital prototype Processing module 203, simulated environment structure module 203, multichannel render display module 204, interactive function configuration module 205, move Make capture module 206, maintainability verification module 207.
Wherein, the database management module 201 is for storing common maintenance support tool of Virtual Maintenance Simulation etc. Mathematical model, and required model is provided to virtual environment according to according to designed maintenance simulation scheme.
The digital prototype processing module 202 is used to the digital prototype prototype being externally entering carrying out format conversion, To meet the call format of immersion emulation;Using related lightweight algorithm, the progress that designs a model original to digital prototype is light Quantification treatment is converted to the lightweight maintenance simulation model interacted suitable for Fast rendering;In addition, according to actual emulation needs, Other pretreatment works are carried out to digital prototype, model assembly that is unnecessary and not influencing Virtual Maintenance Simulation is such as deleted, increases Several components are normalized to an assembly entity, increase texture, color etc., to carry by the model assembly that maintenance simulation needs The sense of reality and interactive efficiency of high immersive environment.
The simulated environment structure module 203 is used to import the digital prototype handled well by digital prototype processing module 202, Other virtual prototypes in environment such as workbench, working stand, repair auxiliary tool etc. are loaded according to the position relationship determined Into virtual environment;It is in virtual scene according to the kinetic characteristics and physical attribute of each component of product in real world Each model machine addition dynamics and physics constraint.For example, adding hinge revolute pair for the structural member only relatively rotated, it is Prismatic pair etc. is added between the structural member only relatively moved.According to object, shape size is become during exercise and after by force effect Change relationship sets object to rigid body or beformable body, and acceleration of gravity etc. is arranged for entire virtual world.
The multichannel renders display module 204 and is used to build the Virtual Maintenance scene progress multichannel rendering finished, And the image data rendered is output in display equipment.
The interactive function configuration module 205 is used to match for the interactive device needed for Virtual Maintenance Simulation based on VRPN agreements Set interactive function.All kinds of interactive devices are standardized as to several standard device types of VRPN protocol conventions.
The motion capture module 206 is used for exercise data of the acquisition and recording user in virtual scene.In addition, optional , according to practical interaction demand, movable information of the acquisition interactive device in virtual scene, such as anaglyph spectacles, control crank etc., Track and localization function is provided for these interactive devices.
The maintainability verification module 207 carries out maintainability verification for user in virtual environment.Void based on formulation Quasi- maintenance simulation scheme is moved according to Virtual Maintenance flow in repairing route, close to virtual prototype, adjustment repair appearance State dismounts virtual prototype, the operations such as cutting.In addition, user can also carry out the object in virtual environment ranging, mark Note etc..During with virtual scene interaction, according to maintainability the checking item, content and the standard made, in conjunction with void The data captured in near-ring border, verify Product maintenance.

Claims (10)

1. a kind of immersion Virtual Maintenance Simulation method towards Product maintenance verification, it is characterised in that:The emulation mode Include the following steps:
Step 1 is designed product virtual maintenance simulation task;
Step 2, the processing that Virtual maintenance simulation is carried out to digital prototype;
Step 3, according to first two steps obtain as a result, digital prototype is imported virtual environment, build Virtual Maintenance scene, establish dynamic Mechanics and physical constraint;
Step 4 carries out multichannel rendering to Virtual Maintenance scene;
Step 5, according to interactive device, bind interactive operation, provide interactive function to the user;
Step 6 captures and records action data of the user in virtual scene;
Step 7, according to user in immersion scene with the interaction scenario of virtual maintenance environment, to Product maintenance carry out core It looks into.
2. a kind of immersion Virtual Maintenance Simulation method towards Product maintenance verification according to claim 1, special Sign is:The product virtual maintenance simulation task design method includes:
The practical maintenance task of product and process are analyzed, determine Virtual Maintenance scheme and flow;
According to specific maintenance task scene, required maintenance tool, auxiliary Support Resource inventory are obtained;
Obtaining the Virtual Maintenance Simulation needs the Product maintenance carried out to verify item.
3. a kind of immersion Virtual Maintenance Simulation method towards Product maintenance verification according to claim 1, special Sign is:The processing method of the digital prototype Virtual maintenance simulation includes:
Model conversion is carried out to digital prototype;Light-weight technologg digital prototype model reduces model data amount, improves and renders and hand over Mutual efficiency;Needs are emulated according to immersion, other processing are carried out to digital prototype:Texture, color are added, to each of digital prototype A parts are recombinated.
4. a kind of immersion Virtual Maintenance Simulation method towards Product maintenance verification according to claim 1, special Sign is:The Virtual Maintenance scenario building method includes:
Treated digital prototype is imported, and according to Virtual Maintenance scene needs, other mathematical models are added in virtual environment: Maintenance tool, ancillary equipment;The size of each model machine and between position relationship tally with the actual situation.
5. a kind of immersion Virtual Maintenance Simulation method towards Product maintenance verification according to claim 1, special Sign is:The dynamics and physical constraint include:
According to the practical kinetic characteristics of product, each type kinematic pair is added for virtual prototype, its movement is made to meet the true of maintenance simulation Reality needs, and is that the object in virtual environment adds physical constraint, definition object is rigid body according to product actual physics characteristic Or flexible body, the gravity direction in virtual environment is set;
The interactive device operates binding method:
It, will be for all kinds of of Virtual Maintenance Simulation based on Virtual-Reality Peripheral Network (VRPN) agreement Interactive function is tied on virtual reality peripheral equipment;
The maintainability verification method includes:
According to the maintainability of required progress verify item, during user interacts with virtual environment, to maintainability continuous item into Row verifies verification.
6. a kind of immersion Virtual Maintenance Simulation system towards Product maintenance verification, it is characterised in that:The analogue system Including:
Database management module, the mathematical model for storing, reading common maintenance support resource in Virtual Maintenance scene;
Digital prototype processing module carries out model conversion, light-weight technologg and other processing works to digital prototype;
Artificial tasks build module, import treated digital prototype, establish artificial tasks scene, and build for the object in scene Vertical dynamics and physical constraint;
Multichannel renders display module:The rendering of multichannel figure and output are carried out to repair scene;
Scene interactivity module:For the relevant interactive instruction of immersion virtual emulation to be tied to virtual reality relevant device;
Motion capture module:Action data of the user in virtual scene is captured and records, to support scene interactivity, and repair Property verify;
Maintainability verification module verifies maintainability continuous item during Virtual Maintenance Simulation, and maintainability verifies item Mesh, content and standard are required according to the practical capability of maintenance design of product by capability of maintenance design personnel and are formulated.
7. a kind of immersion Virtual Maintenance Simulation system towards Product maintenance verification according to claim 6, special Sign is:The database module includes:
Sub-module stored:Mathematical model for storing common maintenance support resource in Virtual Maintenance scene;
Reading submodule:Mathematical model for reading common maintenance support resource in Virtual Maintenance scene.
8. a kind of immersion Virtual Maintenance Simulation system towards Product maintenance verification according to claim 6, special Sign is:The digital prototype processing module includes:
Format conversion submodule:For digital prototype to be carried out format conversion;
Light-weight technologg submodule:Light-weight technologg is carried out to digital prototype, rejects unnecessary information, reduces data volume;
Aid in treatment submodule:For adding texture, color, each parts of digital prototype are recombinated.
9. a kind of immersion Virtual Maintenance Simulation system towards Product maintenance verification according to claim 6, special Sign is:The artificial tasks build module:
Model imports submodule:For by the mathematical model of other maintenance support resources needed for digital prototype and virtual scene It imported into virtual environment;
Virtual scene builds submodule:Virtual Maintenance scene is built, reduction actual products repair scene;
Dynamics and physical constraint module:Apply the dynamics for meeting truth and physics for the object in virtual scene about Beam.
10. a kind of immersion Virtual Maintenance Simulation system towards Product maintenance verification according to claim 6, special Sign is:The scene interactivity module includes:
Commander equipment binds submodule:For interactive operation instruction to be tied to interactive device, it to be used for user and virtual scene Expansion interaction;
The motion capture module includes:
Action data captures acquisition submodule, the action data for capturing and acquiring user;
Interactive command positions submodule, for providing location information for interactive instruction;
Vision tracks submodule, for when user is in the generation movement of virtual scene sight, providing track and localization service;
The maintainability verification module, in the interactive process of Virtual Maintenance Simulation, verifying maintainability continuous item, Maintainability the checking item, content and standard are required according to the practical capability of maintenance design of product by capability of maintenance design personnel and are formulated.
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