CN104392387B - A kind of circular coal yard 3 D intelligent based on Unity3D visualizes platform - Google Patents
A kind of circular coal yard 3 D intelligent based on Unity3D visualizes platform Download PDFInfo
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Abstract
The present invention relates to a kind of circular coal yard 3 D intelligent based on Unity3D to visualize platform.Quickly and accurately coal yard quantity in stock is made an inventory significant for power plant's progress cost accounting and scientific management.The present invention is the characteristics of circular coal yard 3 D intelligent based on Unity3D visualizes platform：3D coal yard implementation processs are the cloud datas scanned by combination order coal instrument and enter pin coal data day, generation meets the actual three-dimensional mesh data of coal yard, coal yard 3 dimensional drawing is generated using Unity3D three-dimensional renderings technology, it is modified further according to Power Plant DCS System real time access coal data, to improve painted grid chart and the fitting precision of actual coal yard shape, the volume result of coal yard coal load quantity is provided simultaneously, dynamic modification grid chart shape, and realize the online 3D coal yards real-time update of network using web technology.The present invention has the advantage that real-time, financial cost is low, disk jet degree is high, objective interface is clear.
Description
Technical field
It is three-dimensional more particularly, to a kind of circular coal yard based on Unity3D the present invention relates to digital coal yard technical field
Intelligent visual display platform.
Background technology
Coal consumption is an important production target in thermal power plant, and fuel cost accounts for the 70%~80% of cost of electricity-generating.
In order to accurately adjust cost of electricity-generating, power plant one the moon foot couple coal yard quantity in stock made an inventory.It is especially nervous in coal in power plant
In the case of, must be according to the pot life of the plan existing coal yard coal load quantity of load Accurate Prediction of power plant.Therefore, it is quick, accurate
Ground coal yard quantity in stock is made an inventory significant for power plant progress cost accounting, assessment of economic benefit and scientific management.
At present thermal power plant generally using laser coal inventory instrument the moon the whole coal yard of foot couple be scanned, obtain three-dimensional coordinate
Information, but the three-dimensional for being fitted generation deposits that coal state diagram is not vivid, and the inadequate science of the processing to cloud data, cause to obtain
The figure degree of accuracy it is not high, have little significance in actual use.And due to power plant in daily coal blending decision-making, it is necessary to according to
The Coal Blending Schemes for depositing the coal G- Design same day at scene, it is therefore necessary to obtain daily to deposit coal stereogram.It is if simple using sharp
CD coal instrument, can take a lot of time and material resources.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and one kind is provided and combines three-dimensional point cloud number
According to interpolation and the design of computer vision modification method, this method enters row interpolation to three dimensional point cloud first, according to
Interpolation arithmetic result carries out three dimensional network lattice point drawing, is modified further according to the data of Power Plant DCS System, to improve painted net
The fitting precision of trrellis diagram and actual coal yard shape, while it can provide the volume result of coal yard coal load quantity immediately, dynamic is changed
The circular coal yard 3 D intelligent based on Unity3D of grid chart shape visualizes platform.
Technical scheme is used by the present invention solves the above problems：The circular coal yard 3 D intelligent based on Unity3D
The characteristics of visualizing platform is：3D coal yard implementation processs are the cloud datas scanned by combination order coal instrument and day enter pin
Coal data, generation meet the actual three-dimensional mesh data of coal yard, and coal yard 3 D stereo is generated using Unity3D three-dimensional renderings technology
Figure, is modified further according to Power Plant DCS System real time access coal data, to improve painted grid chart and actual coal yard shape
Fitting precision, while the volume result of coal yard coal load quantity is provided, dynamic changes grid chart shape, and realizes net using web technology
The online 3D coal yards real-time update of network.
Preferably, the present invention must analyze its operation principle, by disk coal instrument for the existing laser coal checking instrument system of power plant
The data obtained is converted to conventional three-dimensional coordinate system；Because dump surface imperfection, even if Scanning step is certain, is finally obtained
Be still random random distribution three-dimensional Scattered data points.
Preferably, 3D coal yards visualization of the present invention is exactly to carry out radial direction base to the cloud data of random random distribution
Function method interpolation arithmetic, forming curves or curved surface, and graphically come out.
Preferably, the present invention carries out gridding processing using Delaunay Triangulation algorithm to sampled data,
Sampled data can be carried out reasonably subdivision, and connect into triangular mesh by Delaunay algorithms, and the algorithm can obtain subdivision
All triangles Minimum Internal Angle sum it is maximum, make not including other points that point is concentrated in any triangle circumscribed circle, respectively
Triangle is as closely as possible to equilateral triangle, avoids the presence of long-narrow triangular mesh, so as to obtain three-dimensional grid；Gridding is
The 3 d space coordinate point set of a cloud is fitted to non-cross network of triangle according to corresponding algorithm；Sampled data gridding
Afterwards, the 3 dimensional drawing of gridding is generated, is prepared for generation dump 3 dimensional drawing in next step.
Preferably, coal yard three-dimensional tridimensional virtual display platform of the present invention employs Flash and Unity 3D synthesis skill
Art is designed based on B/S frameworks spanning operation system platform, and display platform system is divided into metadata schema, database, Unity3D clothes
Business, application layer and the Rotating fields of presentation layer 5；Database is stored by file set to system-critical data, in platform
It is divided into scene database and Service Database；The metadata of scene database includes modeling, material and action, Service Database
Metadata includes coordinate and coal yard parameter information；Unity 3D services refer mainly to the operation logic of system, include the amplification of model
Reduce, rotate translation, visual angle effect and action triggers；Application layer refers mainly to the service logic of system, services and provides in Unity3D
On the basis of interface, the service data manipulatings such as scene display are carried out, real-time exhibition information is provided for presentation layer, passes through in application layer
Subdivision and fitting to 3-D graphic, coal profile diagram is deposited so as to obtain two dimension after circular coal yard expansion；Presentation layer includes using
Family interface and special effect processing, special effect processing include animation effect and model special efficacy.
Preferably, B/S structures of the present invention mainly make use of the browser technology of maturation, with reference to a variety of of browser
Script language and ActiveX technologies, realize that original to need complex proprietary software to realize powerful with general browser
Function, development cost is saved；Web visualizations make to realize online real time inspection coal yard 3 dimensional drawing in a browser, and carry
For the Visual Intelligent Interface Model of close friend, coal planned production is aided in, the technology of design mainly includes network implementation framework, after server
End data treatment technology, and client interaction technique.
Preferably, the present invention for as far as possible improve circular coal yard three-dimensional visualization precision, it is necessary to make full use of power plant work as
Before the coal yard access coal data that can gather, coal yard access coal data include disk coal instrument data, day access coal amount data, artificial zhang
Measure data, belt conveyer scale data and video data.
Preferably, cloud data of the present invention is referred on two dimensional surface or in three dimensions, random random point
The data of cloth, it is exactly to enter row interpolation or fitting, forming curves or curved surface to cloud data that it, which is visualized, and with figure and image table
The technology come is shown；Clearly cloud data, these data got by laser range finder and map star cannot be used for image and answer
Now and pattern fits, so to carry out interpolation arithmetic；Main interpolation algorithm includes weighting algorithm, the radial direction being inversely proportional with distance
Basic function interpolation method and FInite Element, for the interpolation of data, radial basis functions interpolation is best, radial basis functions
The specific algorithm of interpolation arithmetic is as follows：
Being located on two dimensional surface has n point (xi, yi), i=1,2 ... n), and has Zi=f (xi, yi)；Interpolation problem is exactly
A continuous function F (x, y) is constructed, makes it in (xk, yk), (k=1,2 ... functional values n) put are ZkThat is Zk=F (xk,
yk) (k=1,2 ... n)；
RBF is made up of the function of single variable, and this basic function form of a point (x, y) is often
hk(x, y)=h (dk), d herekRepresent the distance by point (x, y) to k-th of data point；
In formula, qk(x, y) is a polynomial basis, and its order is less than m, coefficient ak, bkFollowing simultaneous equations should be met
Group：
N equation meets interpolation requirement before in above formula, and m equation then ensure that multinomial essence below
Spend, m+n equation, simultaneous solution, you can draw undetermined coefficient are shared in two formulas.
Preferably, three-dimensional rendering of the present invention comprises the following steps that：
Input：Coordinate (the x of n point in planei, yi), (i=1,2 ... n), and the point set is designated as S；
Output：The triangulation chained list T=(P of n point1, P2, Pi)→(P2, Pi, Pj→…(Pn-2, Pn-1, Pn)；
Side enlarger arithmetic is the core of whole algorithm, is designed into an independent subprogram, parameter P1、P2、P3For band
Three summits of extended triangular shape,Side is extended for band；
Step 1：Check P1The side table of pointIf it hasAnd access times ncount is more than or equal to 2, then returns；
Step 2：Circulation point chained list PointList, look for the point P of the condition of satisfaction4, node P is taken from PointList successively：
1) judge whether P points are sideEnd points, if so, then going to step 2, otherwise continue；
2) P points and P are judged3Whether point is located at side respectivelyBoth sides, if it is not, then going to step 2, otherwise continue；
3) the side table E of P points is checkedP, see in the table of side whether there is P1、P2Point, i.e., whether there is P1∈LPOr P2∈LP, if so, and
The side access times ncount of one of them is 2, then goes to step 2, otherwise continue；
4) point P and point P is calculated1、P2Angulation value ∠ P1PP2If there are cos (∠ P1PP2) ＜ cos (∠ P1P′P2), its
Middle P ' is the last point found, then updates this value, and record the call number of P points；
5) step 2 is gone to.
Step 3：If recorded point P call number, continue, otherwise return；
Step 4：P points are the point P found4, will be with P1、P2、P4For the triangle Δ on summitiIt is added in triangle chained list T,
Triangle count TriCount cumulative 1；
Step 5：P is updated respectively1、P2、P4Side tableWith P1The side table of pointExemplified by renewal：
1) P is traveled through1The side table of pointIf haveOrThen its corresponding side access times ncount is added
1, otherwise by P2Point or P4Point is added to P1Side tableIn, and side access times ncount is initialized as 1；
2) P is traveled through1The side table of pointIf the side access times ncount of all nodes is 2, by P1Put from a chain
Rejected in PointList；
3) P is updated with same method2Point and P4Point；
In coal yard coal stocktaking system, it is desirable to a few features point of dump surface profile is only measured, then using this
The three-dimensional data points of a little point clouds fit the surface profile of dump, and show on computers, and this requires to know these
The spatial topotaxy of point, the triangle surface continuously spliced with space characterizes actual curved surface, then in each triangle
Interpolation on dough sheet, to obtain accurate description；So adopting said method can fit the shape on coal yard surface well, and
Obtain the coal load quantity of whole coal yard.
Preferably, when user of the present invention interacts with browser, the basic operation of user mainly has：
1. amplify：Amplify the part of figure, in favor of observing the details of dump；
2. reduce：Figure is reduced, it is overall in favor of holding dump；
3. rotate：Using coal yard center as origin, rotated around Y-axis and Z axis, in favor of from all directions, all angles
Coal yard；
4. translate：Image is moved in parallel along screen X-direction or Y-direction, in favor of choosing object observing；
5. in returning：Image is returned in initial position, the i.e. center positioned at screen, is user-friendly；
6. blanking：Providing two kinds of grids, the grid after stereoscopic grid and blanking, the grid after blanking more has third dimension,
Beneficial to observation；
7. the whole audience is drawn：After reading in intermediate input file, after menu or toolbar select this function, start dynamically to draw
Dump figure；
8. volume calculates：After drafting, coal is deposited in the lower section in screen client area offer coal yard in the form of dialog box
Amount；
9. partial points are changed：In order to preferably reflect the details of coal yard image, there is provided the function of partial points modification so that
User can neatly change figure according to the actual conditions at scene.
The present invention compared with prior art, has advantages below and effect：It is right in large-scale outdoor coal yard coal stocktaking
The display methods for the three-dimensional irregular data that laser scanning collects is studied, it is proposed that one kind combines three dimensional point cloud
The design of interpolation and computer vision modification method, this method enter row interpolation to three dimensional point cloud first, according to slotting
It is worth operation result and carries out three dimensional network lattice point drawing, be modified further according to the data of Power Plant DCS System, improves painted grid
Figure and the fitting precision of actual coal yard shape, while it can provide the volume result of coal yard coal load quantity immediately, dynamic changes net
Trrellis diagram shape.Visualization in scientific computing is referred in scientific computing process with computer graphics and image processing technique
The data of data and result of calculation are converted to image, are shown on screen and carry out interaction process theory, methods and techniques,
It is related to the visualization of 3 d data field, the interactive controlling of calculating process and guiding, graphic hotsopt and image processing it is parallel
Algorithm, the programming environment of Graphics-oriented, and virtual reality technology etc..
Present disclosure mainly includes：(1) for the existing disk coal instrument system of power plant, its operation principle must be analyzed, will
Disk coal instrument the data obtained is converted to conventional three-dimensional coordinate system.(2) main method of traditional curved surface figure shows is have studied, for
The curved-surface display of scattered data being proposes solution, gives the interpolation method of scattered data being.(3) Delaunay triangles are passed through
Subdivision, the 3 dimensional drawing of gridding is generated, laid the foundation for dump 3 D stereo map generalization.It is (4) more than application theoretical,
The practical plan of coal yard disk coal is proposed, while is updated according to the data of Power Plant DCS System, is finally based on Unity 3D volumes
Coal yard three dimensional graph display software is made.The present invention utilizes the whole coal yard of laser scanning on the basis of laser coal inventory instrument data
Cloud data is obtained, by the way that coal yard is divided into uniform grid, obtains interpolation using the interpolation algorithm of cloud data, then pass through
Image fitting technique amendment interpolation, reappear the 3 dimensional drawing of whole coal yard by Unity3D technologies, according to Power Plant DCS system
The real time access coal data of system, real-time update is carried out to depositing coal figure, can be obtained in financial cost and required precision corresponding
Ensure.
Brief description of the drawings
Fig. 1 is that circular coal yard 3 D intelligent visualizes platform technology scheme schematic diagram, wherein, (a) is represented at data
Schematic diagram is managed, (b) represents interpolation arithmetic schematic diagram, and (c) represents that 3D renders schematic diagram, and (d) represents Web visualization schematic diagrames.
Fig. 2 is the Three-dimensional Display platform schematic diagram based on Unity3D.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, and following examples are to this hair
Bright explanation and the invention is not limited in following examples.
Embodiment.
For current power plant's technical background and demand, the main tasks of 3D coal yards is that power plant is deposited into coal situation is visual aobvious
Show, 3D coal yard implementation processs are the cloud datas scanned by combination order coal instrument and enter the data such as pin coal day, and generation meets coal yard
Actual three-dimensional mesh data, coal yard 3 dimensional drawing is generated using the three-dimensional rendering such as Unity3D technology, and utilize web technology
The online 3D coal yards of network are realized, is provided for power plant and realizes decision support.
Precision is visualized, it is necessary to make full use of the coal yard that can currently gather to deposit coal data to improve 3D coal yards as far as possible,
Mainly include disk coal instrument data, day access coal amount data, manually measure data, belt conveyer scale data and video data.From existing skill
Seen in art, in above-mentioned several data sources, the data of disk coal instrument are the most accurate, but due to disk coal instrument make an inventory every time it is time-consuming compared with
It is long, should not frequently it use；Day access coal total amount is then directly corresponding with output, and precision is higher, but is taken due to lacking coal yard
Coal positional information, it is difficult to directly generate coal yard stereogram；The data of belt conveyer scale then because measurement error is larger, it is for reference only with
Auxiliary；Video data is then that coal yard carries out direct sample, it is necessary to which Complex Modeling, can extract useful data；Artificial measure is to work as
Preceding conventional method, but due to human factor, chaining error is larger, can be used as assistance data.
As shown in figure 1, Fig. 1, which is circular coal yard 3 D intelligent, visualizes platform technology scheme schematic diagram, specific implementation
Scheme is as follows.
(1) laser coal inventory instrument data prediction.
Because whether tower or hand-held disk coal instrument has multiple measurement basic points, and each measurement basic point obtains
To data point set be all using this measurement basic point as in the coordinate system of the origin of coordinates, so must first there is the mistake of a coordinate transform
Journey.Laser coal inventory instrument is highly dense using surface progress high-frequency profile scanning acquisition of the two-dimentional high-frequency laser scanner to stock ground
The scanner deflection angle number of degrees that the profile data of degree, the stock ground length obtained with reference to stroke measuring device and backhaul measuring appliance obtain
According to realizing calculating, the display of stock ground threedimensional model of stock ground volume.LDMS is driven to press one by computer control turntable
Fixed order calculates three-dimensional coordinate of each measuring point in coal yard to coal yard surface scan.Because coal yard surface is irregular,
Even if Scanning step is certain, what is finally obtained is still three-dimensional Scattered data points.The key of figure shows and volume calculating section
It is surface fitting, the basis of curve matching is accurate data interpolating.
(2) interpolation arithmetic of cloud data.
Cloud data referred on two dimensional surface or in three dimensions, the data of random random distribution.Its is visual
It is exactly to enter row interpolation or fitting to cloud data to change, forming curves or curved surface and the technology with figure and graphical representation out.By
What laser range finder and map star were got is clearly cloud data, and these data cannot be used for image reproduction and pattern fits, institute
With interpolation arithmetic to be carried out.Main interpolation algorithm has：The weighting algorithm that is inversely proportional with distance, Interpolation Property of Radial Basis Function method, have
Limit first method etc..For the interpolation of data, radial basis functions interpolation is best, and Fig. 1 (b) is vertical for what is obtained after interpolation
Body figure.Specific algorithm is as follows：
Being located on two dimensional surface has n point (xi, yi), (i=1,2 ... n), and has Zi=f (xi, yi).Interpolation problem is exactly
A continuous function F (x, y) is constructed, makes it in (xk, yk), (k=1,2 ... functional values n) put are ZkThat is Zk=F (xk,
yk) (k=1,2 ... n).
RBF is made up of the function of single variable.This basic function form of one point (x, y) is often
hk(x, y)=h (dk), d herekRepresent by point (x, y）To the distance of k-th of data point.
In formula, qk(x, y) is a polynomial basis, and its order is less than m.Coefficient ak, bkFollowing simultaneous equations should be met
Group：
N equation meets interpolation requirement before in above formula, and m equation then ensure that multinomial essence below
Degree.M+n equation, simultaneous solution, you can draw undetermined coefficient are shared in two formulas.
(3) three-dimensional rendering.
Tetrahedral grid model is a kind of true three-dimensional data model, uses it to simulate dump, not only facilitates processing to calculate,
It is easy to dump stereoscopic display.Gridding be the 3 d space coordinate point set of a cloud is fitted to according to corresponding algorithm it is non-cross
Network of triangle.The 3 dimensional drawing of gridding can be generated after mutual office's gridding by sampling, and dump 3 D stereo is generated for lower step
Figure is prepared.The present embodiment carries out gridding processing to sampled data using Delaunay Triangulation algorithm, and Delaunay is calculated
Sampled data can be carried out reasonably subdivision, and connect into triangular mesh by method, and the algorithm can make all triangles that subdivision obtains
The Minimum Internal Angle sum of shape is maximum, is not include other points that point is concentrated in any triangle circumscribed circle, each triangle to the greatest extent may be used
Close to equilateral triangle, the presence of long-narrow triangular mesh can be avoided, therefore the three-dimensional grid generated is also more excellent.Specific implementation step
It is rapid as follows：
Input：Coordinate (the x of n point in planei, yi), (i=1,2 ... n), and the point set is designated as S.
Output：The triangulation chained list T=(P of n point1, P2, Pi)→(P2, Pi, Pj)→…(Pn-2, Pn-1, Pn)
Side enlarger arithmetic is the core of whole algorithm, is designed into an independent subprogram, parameter P1、P2、P3For band
Three summits of extended triangular shape,Side is extended for band.
Step 1：Check P1The side table of pointIf it hasAnd access times ncount is more than or equal to 2, then returns.
Step 2：Circulation point chained list PointList, look for the point P of the condition of satisfaction4.Node P is taken from PointList successively：
1) judge whether P points are sideEnd points, if going to step 2, otherwise continue.
2) P points and P are judged3Whether point is located at side respectivelyBoth sides, if not going to step 2, otherwise continue.
3) the side table E of P points is checkedP, see in the table of side whether there is P1、P2Point, i.e., whether there is P1∈LPOr P2∈LP.If so, and
The side access times ncount of one of them is 2, that is, goes to step 2, otherwise continue.
4) point P and point P is calculated1、P2Angulation value ∠ P1PP2If there are cos (∠ P1PP2) ＜ cos (∠ P1P′P2), its
Middle P ' is the last point found, then updates this value and record the call number of P points.
5) step 2 is gone to.
Step 3：If recorded point P call number, continue, otherwise return.
Step 4：P points are the point P found4, will be with P1、P2、P4For the triangle Δ on summitiIt is added in triangle chained list T,
Triangle count TriCount cumulative 1.
Step 5：P is updated respectively1、P2、P4Side tableWith P1The side table of pointExemplified by renewal：
1) P is traveled through1The side table of pointIf haveOrThen its corresponding side access times ncount is added
1, otherwise by P2Point or P4Point is added to P1Side tableIn, and side access times ncount is initialized as 1.
2) P is traveled through1The side table of pointIf the side access times ncount of all nodes is 2, by P1Put from a chain
Rejected in PointList.
3) P is updated with same method2Point and P4Point.
In coal yard coal stocktaking system, it is desirable to a few features point of dump surface profile is only measured, then using this
The three-dimensional data points of a little point clouds fit the surface profile of dump, and show on computers.This requires to know these
The spatial topotaxy of point, the triangle surface continuously spliced with space characterizes actual curved surface, then in each triangle
Interpolation on dough sheet, to obtain accurate description.So adopting said method can fit the shape on coal yard surface well, and
Obtain the coal load quantity of whole coal yard.
(4) Unity 3D virtual displays.
Unity 3D can handle substantial amounts of three-dimensional mould fully, in real time as a kind of three-dimension virtual reality gaming platform
Type, wherein Unity 3D engines are that it creates the core technology of high quality 3D analogue systems and actual visual effect, to DirectX
The figure for possessing height optimization with OpenGL renders pipeline.Coal yard tridimensional virtual display platform employs Flash+Unity 3D's
Complex art is designed based on B/S frameworks spanning operation system platform.As shown in Fig. 2 display platform system is divided into metadata schema, number
According to storehouse, Unity3D services, application layer and the Rotating fields of presentation layer 5.Embodiment is as follows：
1) Web is visualized：Mainly solve to realize in a browser and check coal yard 3 dimensional drawing in real time online, and provide
Friendly Visual Intelligent Interface Model, aid in coal planned production.The technology of design mainly includes network implementation framework, server back end
Data processing technique, and client interaction technique.
2) B/S frameworks：Browser/Server Mode is a kind of network structure pattern after WEB rises.This pattern will be
The core that system function is realized is focused on server, simplifies the exploitation, maintenance and use of system.Browser passes through
WebServer carries out data interaction with database.Based on above-mentioned advantage and current coal yard technology, 3D coal yards use B/S frameworks,
Server end generates correct grid data, and browser end renders and visualizes coal yard stereogram, as shown in Fig. 1 (d).
3) server background correlation technique.
4) browser interface interaction technique：A friendly visualization interface is mainly established, is easy to check current coal yard
Deposit coal information.It is mainly interact realization by user and browser to deposit coal information inspection.And the interactive information of browser is then
It is to include three kinds of interactions：Html is interacted with server interaction, html with unity3D and html and user mutual.
5) user interacts with browser：The basic operation of user mainly has：1. amplify：Amplify the part of figure, in favor of
Observe the details of dump.2. reduce：Figure is reduced, it is overall in favor of holding dump.3. rotate：Using coal yard center as origin, around Y
Axle and Z axis rotation, in favor of the coal yard from all directions, all angles.4. translate：It is parallel along screen X-direction or Y-direction
Mobile image, in favor of choosing object observing.5. in returning：Image is returned in initial position, the i.e. center positioned at screen, it is convenient
User uses.6. blanking：This patent provides two kinds of grids, and the grid after stereoscopic grid and blanking, the grid after blanking more has vertical
Body-sensing, beneficial to observation.7. the whole audience is drawn：After reading in intermediate input file, after menu or toolbar select this function, start dynamic
Draw dump figure in ground.8. volume calculates：After drafting, coal yard is provided in the lower section in screen client area in the form of dialog box
Coal load quantity.9. partial points are changed：In order to preferably reflect the details of coal yard image, this software provides the work(of partial points modification
Can so that user can neatly change figure according to the actual conditions at scene.
The circular coal yard 3 D intelligent based on Unity3D in the present invention visualizes platform and deposited in large-scale outdoor coal yard
In online coal quantity measurement, realize that thermal power plant circular coal yard is deposited the visualization of coal situation and shown using Unity3D platforms, be power plant's day
Often production provides friendly decision support.The display methods of the three-dimensional irregular data collected to laser scanning is studied,
Propose a kind of combination three dimensional point cloud interpolation and the design of computer vision modification method.First to laser coal inventory instrument
The three dimensional point cloud of scanning enters row interpolation, and generation meets the actual three-dimensional mesh data of coal yard, utilizes the three-dimensional wash with watercolours such as Unity3D
Dyeing technique generates coal yard 3 dimensional drawing, is modified further according to Power Plant DCS System real time access coal data, to improve what is painted
Grid chart and the fitting precision of actual coal yard shape.It can provide the volume result of coal yard coal load quantity immediately simultaneously, dynamically repair
Change grid chart shape, the online 3D coal yards real-time update of network is realized using web technology.Compared with traditional disk coal method, have
The technical advantages such as real-time, financial cost is low, disk jet degree is high, objective interface understands.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different, and the above content described in this specification is only to structure example explanation of the present invention.It is all according to
The equivalence changes or simple change done according to the construction described in inventional idea of the present invention, feature and principle, are included in this hair
In the protection domain of bright patent.Those skilled in the art can do various to described specific embodiment
The modification of various kinds or supplement are substituted using similar mode, without departing from structure of the invention or surmount present claims
Scope defined in book, protection scope of the present invention all should be belonged to.
Claims (7)
1. a kind of circular coal yard 3 D intelligent based on Unity3D visualizes platform, it is characterised in that：3D coal yards realize stream
Journey is the cloud data scanned by combination order coal instrument and enters pin coal data day, and generation meets the actual three-dimensional grid number of coal yard
According to using Unity3D three-dimensional renderings technology generation coal yard 3 dimensional drawing, further according to Power Plant DCS System real time access coal data
It is modified, to improve painted grid chart and the fitting precision of actual coal yard shape, while provides the volume of coal yard coal load quantity
As a result, dynamic modification grid chart shape, and realize the online 3D coal yards real-time update of network using web technology；Coal yard 3 D stereo
The complex art that virtual display platform employs Flash and Unity 3D is designed based on B/S frameworks spanning operation system platform, displaying
Plateform system is divided into metadata schema, database, Unity3D services, application layer and the Rotating fields of presentation layer 5；Database passes through text
Part set is stored to system-critical data, and scene database and Service Database are divided into platform；Scene database
Metadata include modeling, material and action, the metadata of Service Database include coordinate and coal yard parameter information；Unity 3D
Service refers to the operation logic of system, including the zoom of model, rotation translation, visual angle effect and action triggers；Application layer refers to
The service logic of system, on the basis of Unity3D provisioning interfaces, scene display service data manipulating is carried out, for performance
Layer provides real-time exhibition information, in application layer by the subdivision to 3-D graphic and fitting, so as to obtain circular coal yard expansion
Two dimension deposits coal profile diagram afterwards；Presentation layer includes user interface and special effect processing, and special effect processing includes animation effect and model is special
Effect.
2. the circular coal yard 3 D intelligent according to claim 1 based on Unity3D visualizes platform, its feature exists
In：For the existing laser coal checking instrument system of power plant, its operation principle must be analyzed, disk coal instrument the data obtained is converted to conventional three
Dimension coordinate system；Because dump surface imperfection, even if Scanning step is certain, what is finally obtained is still random random point
The three-dimensional Scattered data points of cloth.
3. the circular coal yard 3 D intelligent according to claim 2 based on Unity3D visualizes platform, its feature exists
In：The visualization of 3D coal yards is exactly to carry out radial basis functions interpolation arithmetic to the cloud data of random random distribution, is formed
Curve or curved surface, and graphically come out.
4. the circular coal yard 3 D intelligent based on Unity3D according to claim 1 or 2 or 3 visualizes platform, its
It is characterised by：Gridding processing is carried out to sampled data using Delaunay Triangulation algorithm, Delaunay algorithms will can be adopted
Sample data carry out reasonably subdivision, and connect into triangular mesh, and the algorithm can make the minimum for all triangles that subdivision obtains
Interior angle sum is maximum, makes not including other points that point is concentrated in any triangle circumscribed circle, each triangle is as closely as possible to
Equilateral triangle, the presence of long-narrow triangular mesh is avoided, so as to obtain three-dimensional grid；Gridding is by the space three-dimensional seat of a cloud
Punctuate collection is fitted to non-cross network of triangle according to corresponding algorithm；After sampled data gridding, the three of gridding is generated
Stereogram is tieed up, is prepared for generation dump 3 dimensional drawing in next step.
5. the circular coal yard 3 D intelligent according to claim 1 based on Unity3D visualizes platform, its feature exists
In：B/S structures make use of the browser technology of maturation, with reference to a variety of Script language and ActiveX technologies of browser；Web
Visualization makes to realize online real time inspection coal yard 3 dimensional drawing in a browser, and provides the Visual Intelligent Interface Model of close friend,
Coal planned production is aided in, the technology of design includes network implementation framework, server back end data processing technique, and client and handed over
Mutual technology.
6. the circular coal yard 3 D intelligent based on Unity3D according to claim 1 or 2 or 3 visualizes platform, its
It is characterised by：To improve circular coal yard three-dimensional visualization precision, it is necessary to the coal yard access for making full use of power plant currently to gather
Coal data, coal yard access coal data include disk coal instrument data, day access coal amount data, manually measure data, belt conveyer scale data and
Video data.
7. the circular coal yard 3 D intelligent according to claim 5 based on Unity3D visualizes platform, its feature exists
In：When user interacts with browser, the operation of user has：
1. amplify：Amplify the part of figure, in favor of observing the details of dump；
2. reduce：Figure is reduced, it is overall in favor of holding dump；
3. rotate：Using coal yard center as origin, rotated around Y-axis and Z axis, in favor of the coal yard from all directions, all angles；
4. translate：Image is moved in parallel along screen X-direction or Y-direction, in favor of choosing object observing；
5. in returning：Image is returned in initial position, the i.e. center positioned at screen, is user-friendly；
6. blanking：Provide two kinds of grids, the grid after stereoscopic grid and blanking, the grid after blanking more has third dimension, is beneficial to
Observation；
7. the whole audience is drawn：After reading in intermediate input file, after menu or toolbar select this function, start dynamically to draw dump
Figure；
8. volume calculates：After drafting, the coal load quantity of coal yard is provided in the lower section in screen client area in the form of dialog box；
9. partial points are changed：In order to preferably reflect the details of coal yard image, there is provided the function of partial points modification so that user
Figure can be neatly changed according to the actual conditions at scene.
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